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revision 1.26 by adcroft, Mon Apr 10 14:41:52 2000 UTC revision 1.1004 by heimbach, Thu Jun 19 16:43:56 2008 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint60
8    --->>> This is the last checkpoint for which generating the adjoint
9    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
10    --->>> by default.
11    --->>> Future checkpoints will ommit this flag by default.
12    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
13    o pkg/grdchk: Add gradient check to etan0 perturbations.
14    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
15    o pkg/autodiff: more flexibility in zeroadj.
16      model/src: modifying do_oceanic_phys.F accordingly.
17    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
18    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
19      special setup of gmredi for which the adjoint is stable
20      enough for parameter optimization.
21    o bridging the gap between eddy stress and GM.
22      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
23          along with a change in CPP option (now ALLOW_EDDYPSI).
24      -> when using GM w/ GM_AdvForm:
25          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
26          is applied either in the tracer Eq. or in momentum Eq.
27          depending on data.gmredi (intro. GM_InMomAsStress).
28      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
29      The key modifications are in model/src/taueddy_external_forcing.F
30      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
31    
32    checkpoint59r
33    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
34      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
35      fix option to read coriolis(@ cell-corner) from files with CS-grid.
36    o pkg/mnc: add some attributes to standard 1D-coordinate variables
37    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
38      mass points, when using mnc for output
39      - add runtime parameter (missing_value, missing_value_int) to override
40        default (which is the value of getcon('UNDEF'))
41    o pkg/mnc: prepare mnc for the actual use of missing values with the
42      diagnostics package: small fix in mnc_cw_readwrite.template and more
43      initialisation of never used fields
44      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
45      versions
46    o pkg/thsice/thsice_ini_vars.F added default initial values so that
47      thermodynamics sea ice solver does not blow up when some initial fields
48      are missing.
49    o move from external_forcing_surf.F to ini_forcing.F
50      the p-coord. hack consisting in using pLoad to set phi0surf ;
51      update output of tutorial_global_oce_in_p (affected @ truncation level).
52    o Freshen up a bit hs94.1x64x5, notably:
53      remove rotationPeriod and tRef=5*0. (adjoint only), and add
54      exactConserv=.TRUE.
55    o pkg/generic_advdiff:
56      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
57      applies to files where Temperature & Salinity 2nd Order moments are used.
58    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
59      this uses a dynamically allocated internal state data structure
60      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
61      and requires a fortran 90 compiler
62    
63    checkpoint59q
64    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
65       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
66    o Refresh tutorial_global_oce_biogeo, notably:
67      - change bathymetry (put back seamounts in ACC, use hFacs)
68      - change EOS (POLY3 --> JMD95Z)
69      - use Bryan-Lewis vertical diffusivity
70      - use multidimensional advection
71      - remove old virtual virtual in dic pkg, now done through ptracer pkg
72      - change a couple of parameters in dic pkg
73    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
74    o pkg/obcs: change default to OBCSfixTopo = .true.,
75      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
76      - replace "debugMode" with "debugLevel .GE. debLevB"
77    o implementation of TAF directives for gchem,cfc,dic
78    o remove "exp5" (replaced by tutorial_deep_convection).
79    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
80      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
81      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
82      --> changes results in exp4, seaice_obcs
83    o tutorial_deep_convection :
84      update the set-up and increase resolution and domain size ; start
85      from pseudo initial conditions = output at t=120mn in order to see
86      something happening when running testreport.
87    o pkg/seaice: add os7mp as an advection scheme
88                  add check for advection schemes
89                  add a flag for restoring T and S underneath sea ice
90    o pkg/my82: add netcdf-support and diagnostics
91    o thsice pkg:
92      - Now hsMax limits snow height by turning it into ice following
93        flooding scheme (and now conserving energy)
94      - Slight rewriting of the formula in thsice_calc_thick.F
95      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
96      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
97    
98    checkpoint59p
99    o gchem / dic / cfc :
100      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
101      - add new parameter files: "data.dic" & "data.cfc" ;
102      - various re-arrangement in initialisation & header file ;
103      - fix tutorial_global_oce_biogeo for multi-threaded test.
104    o pkg/dic: test for "pickup_dic" file when restarting ;
105      if no pickup-file, can restart with a re-initialised pH (same as it did
106      before) providing pickupStrictlyMatch is set to False.
107    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
108      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
109    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
110      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
111    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
112     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
113       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
114    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
115       scheme to use for vorticty-term ;
116     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
117       (with default selectVortScheme, return to original discretisation)
118     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
119    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
120    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
121      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
122      also fix diagnostics VISCAHW & VISCA4W.
123    
124    checkpoint59o
125    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
126    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
127      move a few statemens out the main loop into separate loops
128    o pkg/shelfice:
129      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
130        (kg/m^2/s), does not break tests, because in verification/isomip,
131        rhoConstFresh=rhoConst (by accident)
132      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
133      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
134        new file model/src/seawater.F, so that they are available for all pkgs.
135      - convert potential temperature into in-situ temperature. This changes the
136        isomip tests => update tests
137    o add a flag writePickupAtEnd (default=true) to be able to suppress
138      writing a pickup at the last timestep
139    o tools/mpack-1.6 :
140      - disable automake (not working) and autoconf (not needed).
141      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
142        also cleaner with much less compilation warnings.
143    o pkg/profiles:
144      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
145      (for "less than 32 characters name" compiler requirement)
146    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
147      conditions that have a different sampling frequency than S/T/U/V obcs
148    o pkg/diagnostics (stats-diags):
149      - fix global Min/Max in case 1 processor get only empty tiles
150    o genmake2: replace (4 times)
151         make genmake_tc_1.o >> genmake_warnings 2>&1
152      with
153         COMM="$CC $CFLAGS -c genmake_tc_1.c"
154         echo $COMM >> genmake_warnings
155         $COMM >> genmake_warnings 2>&1
156      to make genmake2 always see the value of CC as specified in the optfile.
157    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
158      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
159      - modify verification advect_cs test to test SOM-advection on CS-grid.
160    o pkg/ctrl:
161      - Rewrite of ctrl_map_ini_ecco.F,
162        introducing a generic routine (ctrl_map_ini_gen.F).
163      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
164    
165    checkpoint59n
166    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
167      number in dedicate array "hdiag":
168      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
169        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
170      - many small changes (integer format) for large number of diagnostics
171      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
172        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
173    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
174      usingSphericalGrid, this allows to define the rotated grid coordinates
175      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
176      geographical coordinates according to the inverse of the rotation defined
177      by the Euler angles, so that Coriolis parameter and online-interpolation by
178      exf works with the geographical coordinates on XC/YC/XG/YG.
179      Naturally, this feature does not work with all packages, so some
180      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
181      profiles), because there the coordinates are assumed to be regular
182      spherical grid coordinates.
183    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
184      - introduce isopycnal diffusion coefficient control.
185    o tools/adjoint_options:
186      - additional control vector components.
187    o pkg/mnc: have mnc create marginally meaning full coordinate variables
188      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
189    o pkg/mypackage:
190      - add example of read/write pickup for state-var ;
191      - add entry points to the main code for state-vars diags & write-pickup.
192    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
193      transitions for useExfYearlyFields
194      - add new subroutine that determines the file to read from for
195        use*YearlyFields = .TRUE. and .FALSE.
196      - add a verification experiment to global_with_exf that tests
197        useExfYearlyFields with USE_EXF_INTERPOLATION defined
198    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
199      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
200      subroutines (which could be generated from a template, because they are
201      almost identical), for now they are included in obcs_prescribe_read.F for
202      simplicity
203    o pkg/exf:
204      - add a little more diagnostic to exf_interp_read (in analogy to
205        mds_read_field, can be turned off with debugLevel < debugLevA=1)
206      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
207        ugly but fast by unrolling short inner loops, inserting a unroll=8
208        directive in routine lagran, and splitting a loop and making do while the
209        outermost loop (the latter requires the intoduction of index arrays)
210    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
211    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
212      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
213    o verification/seaice_obcs: updated for restart test and latest options
214    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
215      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
216      for now this is only available for the C-grid code and also within
217      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
218    
219    checkpoint59m
220    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
221      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
222    o gad_som : fix flux output (& diagnostics) to have same units as other  
223      advection scheme fluxes (was previously multiplied by deltaT).  
224    o added verification/seaice_obcs both to test seaice open boundaries
225      and to provide an example matlab scrpt for generating them
226    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
227    o pkg/salt_plume: clean up salt_plume_frac.F to
228      remove redundancy in PlumeMethod 1 and 4
229    o pkg/kpp: added saltplume diagnostics
230    o pkg/obcs and pkg/seaice:
231      - do not set uice and vice to zero when OB*icefile are unspecified
232      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
233      - moved seaice tracer obcs after call to seaice_growth
234    o pkg/salt_plume: added various options for salt plume depth
235      criterion and for vertical distribution of the salt
236    
237    checkpoint59l
238    o pkg/ptracers: new version of ptracers pickup:
239      read meta file and write only fields which are needed to restart.
240      ( same logic as main pickup file ; also using pickupStrictlyMatch )
241    o pkg/seaice:
242      - add timescale for melting due to warm mixed layer as a means of
243        setting SEAICE_availHeatFrac more conveniently
244      - add a CPP-flag/runtime parameter check for flooding algorithm
245      - reformulated availHeat in seaice_growth.F to be independent of AREA
246    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
247      unit changes
248    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
249    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
250      SX vector computer.
251    o pkg/seaice:
252      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
253        seaice forcing fields can now be read only through pkg/exf
254      - removed some unused halos
255    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
256    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
257      or U/VICE from U/VWIND before computing U/VSTRESS
258    
259    checkpoint59k
260    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
261      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
262    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
263      all experiments pass when compile with un-initialised var. checking option.
264    o added pkg/salt_plume
265    o script to test restart (for now, in MITgcm_contrib/jmc_script)
266    o pkg/seaice: new read/write pickup version.
267      read meta file and write only fields which are needed to restart.
268      ( same logic as main pickup file ; also using pickupStrictlyMatch )
269    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
270    o lab_sea.hb87: modify the domain & update output.hb87.txt :
271      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
272      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
273      process. Fixed here by closing the domain at the Northern boundary.
274    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
275    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
276      a set of consecutive levels in/from a 3-D array.
277    o pkg/ptracers:
278      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
279      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
280    
281    checkpoint59j
282    o in pkgs: dic, obcs, offline, rbcs:
283      standard way to compute coeff. for time interpolation between 2 time reccords
284      which retains full precision (& make results less dependent on compiler).
285      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
286    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
287      packages instead of reading ice cover and wind speed separately
288    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
289     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
290      to allow to compile customized code before the update)
291    o cleaning-up:
292      - fix CPP instruction syntax in pkg/obcs
293      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
294        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
295      - fix some threads issue in IO parts.
296    o pkg/dic:
297      - add tons of "_d 0" (--> much better testreports !)
298       and then update outputs of tutorial_global_oce_biogeo
299    o pkg/mom_fluxform:
300      add a special version of momentum advection intended to conserve momentum
301      next to a bathymetry step or a coastline edge. (default = off = #undef)
302    o new read/write pickup version:
303      - for now, only implemented for main (mdsio) pickup file.
304      - write out only what is needed to restart; merge pickup_nh , pickup_ph
305        and main pickup together.
306      - read meta file; read only what is needed to restart; stop if a field
307        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
308        if it make sense (even if the restart is not perfect).
309      - if no meta file, assume that pickup to read corresponds exactly to
310        a pickup that would currently be written.
311      - read pickup written in the old format (until checkpoint59i) if it
312        recognizes an old meta file (no field-list).
313      - add a meta file in exp. which starts from a pickup: 2 cases:
314        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
315         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
316        b) a meta file describing the content of the associated pickup file
317         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
318    o pkg/mdsio & pkg/rw:
319      - new routine to read a meta file ; new set of routine to read
320        Multiple-fields file (with meta file).
321    o added open boundary conditions capability for seaice
322        HSNOW, HSALT, UICE, and VICE
323    
324    checkpoint59i
325    o adjoint:
326      * fix multiDimAdvection adjoint
327        (partial recomputation problem by TAF for fVerT(:,:,kDown)
328        and comlev1 size definition (maxpass vs. max. number of tracers)
329      * verification/global_ocean.90x45x15 adjoint now tests
330        NLFS and multiDimAdvection using DST3 (=30)
331      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
332    o pkg/kpp: add "_d 0" to real constant (if missing);
333      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
334      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
335    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
336      for internal parameters related to restart process (formerly from PARAMS.h)
337      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
338    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
339      as argument. (only atm2d & obcs write_pickup have not yet been updated)
340    o pkg/monitor:
341      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
342      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
343      - account for deep Atmosphere factor and density factor (anelastic)
344    o added open boundary conditions capability for seaice HEFF and AREA
345    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
346      thermodynamics
347      - requires a little reorganization, which affects the testreport results
348        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
349        so that now the conservative form is tested
350      - add a few comments
351    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
352    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
353    o add new diagnostics to seaice: advective, diffusive fluxes (only for
354      multidim-advection, for scheme 2 they are not filled) and transports,
355      thermodynamic growth rates
356    o change units of EmPmR (inside the code, + within coupling interface)
357      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
358      Affects results @ truncation level (cg2d match) and update output of
359       experiments: lab_sea(6), global_ocean.90x40x15(10),
360      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
361      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
362      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
363      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
364    
365    checkpoint59h
366    o pkg/exf:
367      - improve vectorization by moving if-statement out of loops in
368        exf_mapfields, exf_radiation
369      - exf_bulkformulae.F: introduce 2D fields and vectorize code
370    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
371    o testreport:
372      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
373        monitor & update offline_exf_seaice exp. output.
374      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
375    o pkg/seaice:
376      - bug fix in the evp solver: boundary conditions were affected be
377        masking of zMax/zMin (changes results)
378      - minor bug fix in boundary conditions in seaice_calc_strainrates
379        (changes results for no_slip)
380      - seaice_lsr.F: make interpolation of eta dependent on boundaries
381      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
382      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
383        stress formulation and no-slip boundary conditions
384    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
385      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
386    o pkg/seaice: a first HSALT time stepping equation has been checked in
387    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
388      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
389      without requiring DO-IF statements
390    o pkg/thsice:
391      use continuous power-law function for partition of energy between lateral
392      melting/freezing and thinning/thickening ; old code using step function
393      still available with #undef THSICE_FRACEN_POWERLAW
394      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
395    o testreport: change AD testing : check against results/output_adm.txt
396      using same scripts as for forward test.
397    
398    checkpoint59g
399    o adjoint testing: in preparation for changing testreport:
400      - output format: cost and grad written on separated lines
401      - ad output results in directory "results" (instead of "results_ad")
402    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
403    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
404    o pkg/ecco: allow user defined cost function contributions
405    o testreport:
406      Allow to choose (per experiment) the list of tested output variables
407       and the main variable (used to issue a pass/FAIL ) ;
408      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
409      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
410      Also modify printing of summary:
411       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
412       b) echo the list of tested variables in the individual summary.txt of
413          each experiment.
414    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
415      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
416      (but still depend on the tile decompostion of the domain).
417    o pkg/seaice: change a discretization detail to make the B-grid code
418      "more symmetric". This change is likely to remove all "ridges/leads" that
419      where quasi-aligned with the grid in B-grid solutions. It may also be
420      the solution to the stress coupling issues with the B-grid.
421    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
422      remove .cvsignore from input dir. (since testreport no longer run here).
423    o pkg/thsice:
424     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
425     - fix reshaping of sea-ice just after advection:
426       melt all the ice only if ice-volume is too small.
427     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
428       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
429     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
430    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
431      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
432    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
433      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
434      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
435      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
436      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
437      -> update output.txt
438    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
439     this affects truncation error: -> update output.txt of exp:
440      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
441      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
442    
443    checkpoint59f
444    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
445    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
446      a bounded range (in forward mode)
447    o pkg/ecco, ctrl, autodiff and mom_common:
448     internal parameter controls, completements of implementations
449    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
450    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
451      (not seem any difference in testing results).
452    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
453       at face corners.
454    o pkg/generic_advdiff:
455     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
456      loop range indices for computing vertical advection tendency
457      and do the calculation in the interior only (no overlap) ;
458      for now, only implemented for SOM advection (to save CPU time).
459     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
460    o exch2 adjoint
461      First set of changes:
462      - add exch2 hand-written adjoint templates
463      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
464        This will require cleanup in pkg/autodiff/*.F
465        (changed routines currently kept separate in verif. code/)
466      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
467        that used to hide exch2 or cubed-sphere specific code
468        (commented via 'cph-exch2')
469    o pkg/seaice
470      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
471    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
472       output of global_ocean.cs32x15.thsice .
473    
474    checkpoint59e
475    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
476      for B-grid vector (not yet tested) and C-grid vector (<- only used
477      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
478    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
479      (#ifdef ALLOW_SALT_PLUME)
480    o gather_2d/scatter_2d: removed halo regions
481    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
482      scheme and the corresponding test case (under front_relax dir). For now,
483      only available with Skew-flux form and not yet tested in realistic set-up.
484      adjoint: store directives updated, but gradient checks deteriorated,
485      so maybe GM/Redi adjoint is now broken.
486    o seaice adjoint
487      * add AREA, HEFF, HSNOW as control variable
488        (should not change lab_sea results)
489      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
490    o pkg/seaice:
491      * added computation of saltFlux in seaice_growth;
492        For time being, sea ice salinity is assumed constant
493        contribution of snow flooding to freshening of sea ice is neglected.
494        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
495        defaults to 0.0 in order to maintain backward compatibility.
496        Typical values for SEAICE_salinity are 4 to 10 g/kg.
497      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
498      * added SEAICE_availHeatFrac, which specifies fraction of surface level
499        heat content used to melt or grow ice
500      * commented out cap of HICE: it helps keep ice thinner
501      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
502      * applied OBCS T/S mask to HEFFM sea ice mask
503    
504    checkpoint59d
505    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
506     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
507     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
508    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
509     and change default value of parameter "GM_Small_Number";
510     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
511       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
512       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
513    o pkg/ecco: cost function when applying pkg/smooth to controls
514    o pkg/ctrl: add forcingPrecond run time parameter
515    o pkg/seaice:
516     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
517     - fix bug in metric terms of u-equation in LSR solver (implicit part),
518       changes verification/lab_sea
519     - rearrange implicit part of u-equation in LSR solver to make it easier to
520       read, understand, and debug. This causes changes at the truncation level.
521     - fix (serious) bug in the boundary conditions (sign error in the implicit
522       part) of the LSR solver. Changes all LSR results.
523     - fixed problem with HSNOW initialization to avoid thick snow when AREA
524       is initilized with small values - does not change lab_sea results.
525     - added HsnowFile initialization capability
526    o pkg/smooth: addition to model/src and pkg/ctrl so allow
527     initialization of pkg/smooth and application to control vector
528    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
529    o dependencies: pkg/profiles requires pkg/cal
530    o pkg/profiles:
531     - added option ALLOW_PROFILES_GENERICGRID
532         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
533         that interpolation information (grid points and coefficients) is provided
534         within the netcdf input files.
535         -> sample matlab scripts can be found in MITgcm_contrib/gael
536         that allow you to prepare netcdf input files.
537     - also modified: cleaner include statements, cleaner error print statements,
538       cleaner stops when error, and more tests of the netcdf input files consistency.
539    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
540    o pkg/seaice:
541     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
542       requires a new routine: seaice_diagnostics_fill.F
543     - make sure that seaice does not move if not forced (pressure replacement
544       method, Hibler and Ip, 1995), changes results
545     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
546     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
547       It is turned off by default (=-1.), because it changes the results.
548     - make it possible to read AREA from a file, too.
549    
550    checkpoint59c
551    o add S/R and diagnostics for oceanic mixed-layer depth
552    o move GMRedi call after all vertical mixing schemes (including KPP)
553    o pkg/thsice:
554     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
555      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
556    o pkg/obcs:
557     - bug fix for balance code
558    o pkg/seaice:
559      - allow values of SEAICE_elasticParm > 1
560      - add new parameter SEAICE_evpTauRelax as an alternative
561        to SEAICE_elasticParm
562      - make lsr boundary conditions free slip (by default), changes result
563      - add code for no slip boundary conditions for lsr
564      - set minimum of zeta to zero (and not 4e8) (changes results)
565      - add a cap on AREA after advecting AREA if seaice_growth is not called
566    o change calculation of Visbeck K:
567      - no longer depend on tapering scheme; instead, compute slope (limited
568        by GM_maxSlope). this is equivalent to what was comuted before with
569        clipping or linear tappering.
570      - fix vertical averaging (wrong by 1/2 level)
571      - leave the old version (but will not be maintained) within
572        #ifdef OLD_VISBECK_CALC / #endif
573      - update output of exp. ideal_2D_oce
574    o change error catch in calc_r_star to improve vectorization
575    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
576      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
577    o adjoint:
578      Re-organized adjoint checkpointing according to Matt Mazloff
579      (but with modifs/completions/cleanups)
580      Storing is now bundled into large arrays to optimized I/O
581      (and second step in cleanup of the_main_loop)
582    
583    checkpoint59b
584    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
585      - export/import (between ocean & coupler) fields needed for ocean DIC.
586    o pkg/seaice:
587      - get rid of three more exchanges seaice_calc_viscosities (required
588        different loop boundaries in seaice_lsr and seaice_ocean_stress)
589      - bug fix in seaice_ocean_stress (update of lab_sea required)
590      - reduce loop boundaries to necessary minimum also in seaice_evp
591      - go back to the old way of computing deltaC/Z as the adjoint likes that
592        better
593    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
594      passive tracer to an Age Tracer) + update output.txt
595    o pkg/exf:
596      - implement A-grid / C-grid selection for wind-stress input files.
597      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
598      for now, in exf_bulk_largeyeager04.F only :
599      - change implementation for case where windspeed + 2. components wind-stress
600        are read-in. AND use rhoConstFresh to convert evap.
601    o pkg/seaice:
602      - use correct EXCH_UV for wind-forcing (on A-grid).
603      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
604        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
605    o pkg/exf:
606      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
607      EXF_INTERPOLATION:
608      - merge global_with_exf/code version of exf_interp_read.F
609        to the main code ;
610      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
611        reading the file ; Important: This options needs to be defined to recover
612        previous code.
613        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
614      - no longer loose real*8 precision along the way when using exf_iprec=64.
615    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
616      - change discretisation of evp-solver in order to avoid another exchange
617        (changes lab_sea) and clean up a little
618      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
619        help the adjoint (this also changes the results slightly)
620      - add a few "_d 0" where they had been missing in seaice_evp.F
621      - cleaning up: remove unused seaice_calc_rhs.F
622    o pkg/exf: some cleaning-up:
623      - change various "constants" into runtime parameters
624      - cleaned-up Large&Yeager04 routine which should eventually
625        replace exf_bulkformulae.F (changed names of S/R and CPP)
626        and merged various ALLOW_ATM_WIND options
627     only used with thsice pkg (in thsice_get_exf.F):
628      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
629        which are used when useStabilityFct_overIce=TRUE (= the default)
630      - change default values of ice & snow emissivity and scale downward LW
631        by ice & snow emissivity.
632    o pkg/thsice:
633     fix few little problems, in thsice_calc_thickn.F:
634      - growth vertically (and not laterally) if iceFrac == iceMaskMax
635      - melt only laterally if hIce < hThinIce (as the comments say)
636      and in thsice_extend.F:
637      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
638      - start to form ice as soon as the minimum ice-volume is reachable.
639     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
640      and cpl_aim+ocn
641    o pkg/kpp
642     - move computation of surface related input fields to KPP into a new
643       subroutine kpp_forcing_surf.F
644     - remove wrong (within bi,bj loops) EXCH calls.
645     - little cleaning (add argument myThid in last position, cvs header ...)
646     - for now, fix conservation problem by exchanging KPPviscAz (may not
647       be the best fix)
648    o pkg/seaice
649     - check for inconsistent evp parameter/cpp-flag combination
650     - remove leftover errIO flat for obsolete name list error handling
651    o OpenAD
652     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
653    
654    checkpoint59a
655    o pkg/seaice: some parameter clarifications and a little bit of clean up
656    o pkg/thsice: rename run-time parameters:
657       himin       -> hIceMin
658       himin0      -> hThinIce
659       hihig       -> hThickIce
660       i0          -> i0swFrac
661       transCoef   -> bMeltCoef
662       frac_energy -> fracMelting
663      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
664       with default values (for now) that do not change the results.
665      remove old version of thsice vars advection in pkg/seaice.
666    o in FFIELDS.h:
667      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
668      - make pLoad & sIceLoad always available (but still only used if
669         ATMOSPHERIC_LOADING is #define).
670    o pkg/kpp: replaced _KPP_RL with _RL
671    o bug fixes for vertical diffusivity computations when both KPP and
672        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
673        are no longer updating the vertical diffusivity array
674        (passed as argument) but are (re-) setting those arrays.
675    o pkg/seaice: fix bug in evp solver, while doing that
676      - change (improve?) discretization of stress computations for both
677        cgrid-lsr and evp solver
678      - add a new routine to compute strain rates
679      - the above changes lab_sea results
680      - add no slip conditions for evp solver (off by default), lsr-version
681        may follow
682      - fix exchange for shear at Z-points (does not change lab_sea)
683      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
684        (to force the user to pick a time step since there is not "safe" way
685        of choosing it)
686      - add principal stress diagnostics
687      - rearrange fields for evp a little to avoid having to call a: too many
688        exchanges and b: exchanges for stress trensor components which we do
689        not have.
690      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
691        of evp, complete rewrite for lsr case (latter is does not yet work
692        in all cases)
693    o pkg/kpp: add code to have mixing in shelf ice caverns
694      - add myThid to all kpp routines (long overdue)
695    
696    checkpoint59
697    o pkg/exf:
698      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
699        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
700      - move exf header files from lower_case.h to UPPER_CASE.h ;
701        add missing cvs Header & Name
702      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
703      - add namelist param. selectStressGridPosition, exf_monFreq
704      - retire many _CLIM routines, and remove data.exf_clim
705        + params moved to data.exf
706        + climsst, climsss now handled by exf_set_gen, i.e.
707          climss?period=0 refers to constant field,
708          climss?period=-12 to monthly forcing
709      - split up namelists in data.exf
710    o pkg/seaice:
711      - remove seaice_exch and seaice_exch_uv
712      - remove superfluous exchange of theta
713      - add myThid to seaice_budget_ocean/ice
714      - add new interface for atmospheric wind forcing (C-grid only)
715        + new routine
716        + two new field (taux, tauy for stress over ice)
717        + removed one global field (DAIRN) for C-grid case only
718    o pkg/thsise
719      - 2nd set of modifs for thsice adjoint in conjunction with exf
720    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
721    
722    checkpoint58y_post
723    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
724      vertical diffusivity, similar to that in MOM4; turned on using
725      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
726      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
727    o Added capability for 3D specification of background vertical diffusion
728      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
729      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
730      "data" file that contains the 3D vertical diffusivity coefficients.
731    o ice dynamics (pkg/seaice) with thsice thermodynamics:
732      - add code within pkg thsice to advect & diffuse sea-ice fields
733      similar to (and will replace) what has been added in  seaice_advdiff.F,
734      but: - conserving Mass, Heat & Salt.
735           - better when using non-linear advection scheme (not yet fully tested)
736           - can also be used in atmospheric set-up (for now, only the diffusion).
737    
738    checkpoint58x_post
739    o IO option for global-file compact format:
740      - add options when generating topology (utils/exch2/matlab-topology-generator)
741      - add I/O capability (pkg/mdsio).
742      - adapt utils/matlab/rdmds.m to read this format.
743      for now long-line format not yet supported by pkg/mdsio (& exch2).
744    o shelfice: add a few diagnostics
745    
746    checkpoint58w_post
747    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
748      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
749      (and replace horiVertRatio in NH code).
750      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
751                         and tutorial_plume_on_slope (sensitive to truncation)
752    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
753      directly to drive seaice model (C-grid only)
754    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
755     - reintroduce computation of wind from stress,
756     - compute tau (in exf_bulkformulae.F) from windstress averaged to
757       mass points to avoid tau = 0
758     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
759    o rdmnc.m: make it work with "global" files created with gluemnc
760    o rdmnc.m : some improvements in dealing with singleton dimension
761      (tested on all testreport mnc output files).
762    o genmake2: disable pkg/profiles if netcdf test fails.
763    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
764    o move call to cal_readparms up to make calendar parameters/variable available
765      to all packages
766    
767    checkpoint58v_post
768    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
769      useDynP_inEos_Zc tested.
770    o pkg/exf: changes to properly interpolate/mask/scale initial fields
771    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
772      and portions thereof.  See read_cs.txt for description and examples.
773    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
774      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
775      following the great-circle arc between those 2 points.
776    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
777      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
778    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
779     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
780     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
781     - still needs work (not working with some options ; efficiency to improve)
782       and serious testing.
783     - use this scheme for temperature & salinity in 2 advection test exp.:
784       advect_xy & advect_xz, respectively.
785    
786    checkpoint58u_post
787    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
788    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
789    o testreport: add option "-skipdir" to skip some test.
790    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
791      momentum calculation.
792    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
793    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
794      remove checkpoint.F and the_correction_step.F (no longer used);
795      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
796    o add option (linFSConserveTr) to correct for tracer source/sink due to
797      Linear Free surface
798    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
799    o pkg/thsice: fix reading mnc-pickups
800    
801    checkpoint58t_post
802    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
803    o pkg/mdsio:
804     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
805       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
806       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
807     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
808     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
809       either MDS_READ_FIELD or MDS_WRITE_FIELD )
810     - new S/R (to replace MDSWRITEMETA), which allows to write more
811       informations (variable names, time ...) to meta files.
812     - modify rdmds.m to give back the meta file content.
813    o pkg/diagnostics: change vertical interpolation to be safer, and more
814       flexible (define p-levels to interpolate to in data.diagnostics);
815      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
816       diagnostic pointer.
817    o pkg/seaice: more cleaning up of seaice_growth, added many comments
818    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
819    o fix multi-category seaice:
820     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
821       SEAICE_MULTICATEGORY
822     - fix short wave heat flux
823    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
824       and allow to use EVP solver. Change forward lab_sea: test both EVP
825       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
826    o Initial check-in of lab_sea adjoint
827      (very similar to natl_box_adjoint/code_seaice)
828      * used C-grid and EVP solver
829      * used KPP, GM/Redi
830      * uses inAdExact=.TRUE.
831      * gradient checks fail for both ADM and TLM
832        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
833        f.d. gradients actually seem more problematic than ADM, TLM gradients;
834        issue is related to forward mismatch between g77 an ifort
835    o pkg/seaice: overhaul of thermodynamics
836     - growth.F and groatb.F are replaced by new routine seaice_growth.F
837     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
838     - move a few global fields out of SEAICE.h into seaice_growth.F and
839       make them 2D (FICE/QNETO/ ...)
840     - remove FO (it is the same as QNETO)
841     - introduce a few local fields to avoid modifying external fields such
842       as atemp, etc.
843    
844    checkpoint58s_post
845    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
846      changed exf_set_gen.F so that
847        genperiod=0 means input file is one time-constant field and
848        genperiod=-12 means input file contains 12 monthly means
849    o CG2D: use pre-computed solver main-diagonal (stored in common block);
850      this affects truncation error ; generate new output file for exp. which
851      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
852        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
853        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
854        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
855        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
856        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
857    o start implementation of deep-atmosphere and anelastic formulation
858    o verification: remove 2nd copy of input files and use script "prepare_run"
859      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
860    o mom_common/vecinv/fluxform: fix a few initialisation isssues
861    o profiles: fix for multithreaded case
862    
863    o diagnostics: rename few diags:
864      s/'PRESSURE'/'RCENTER '/g
865      s/'TICE    '/'oceFreez'/g
866      s/'TAUX    '/'oceTAUX '/g
867      s/'TAUY    '/'oceTAUY '/g
868      s/'SWFLUX  '/'oceQsw  '/g
869      s/DIFx/DFxE/g
870      s/DIFy/DFyE/g
871      and add few ocean-forcing diagnostics:
872      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
873    o modifications to pkg/seaice/growth.F and budget.F, which change results of
874      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
875      as actual snow thickness.  It now refers everywhere to effective snow
876      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
877    
878    checkpoint58r_post
879    o modifications to pkg/seaice/growth.F, which change results of
880      lab_sea experiment: fixes pertain to melting snow over open water, to
881      masking EVAP under sea ice, and to using the correct AREA variable for
882      computations of EVAP, PRECIP, HSNOW, and GHEFF
883    o add ability to read bathy, salt, and theta using MNC (off by def)
884    o add flooding algorithm and advection of HSNOW for pkg/seaice;
885      both are turned off by default and do no change any results
886    o seaice advection with pkg/thsice: a step toward the use of non-linear
887      advection scheme, but #ifdef or commented out for now (requires more EXCH).
888    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
889      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
890      in natl_box (affects results @ truncation level: update output.txt)
891    o multi-threading and IO:
892      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
893      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
894        (needed to work with SingleCpuIO): tested in all verif. exp.
895    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
896      affects the results (but none of the verification test uses this scheme).
897    o Adding some pkg/diagnostics capability to pkg/seaice
898      (will certainly be subject to changes)
899    o ctrl: adding new control variables:
900      lwflux, lwdown, evap, snowprecip, apressure, runoff
901    
902    checkpoint58q_post
903    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
904      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
905      high_res_cube configuration by 4% on Columbia.
906    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
907      add (in global_with_exf/code) a version of EXF_INTERP_READ without
908      dynamical allocation (seems to work in multi-threaded).
909    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
910      single CPU io) so that TAF does not have to see EESUPPORT.h
911    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
912    
913    checkpoint58p_post
914    o obcs: stop if obcs is used with useCDscheme = .true.
915    o shelfice:
916     - fix a sign error so that no slip at shelfice interface works
917     - remove stop for combination non-hydrostatic code and shelfice. That does
918       not mean, that the results are correct, but at least they are numerically
919       stable
920    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
921    o added adjoint exch routined for all exch*3d* routines
922      and updated flow directives
923    
924    checkpoint58o_post
925    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
926      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
927    o change controling S/R for writing pickup file (new S/R do_write_pickup)
928      and clean-up reading/writing of pickup files.
929    o fix local version of read/write pickup (NH part) in rotating_tank/code
930    o simplify EXCH interface:
931     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
932     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
933    o added the regrid package
934    o shelfice:
935     - add a simple boundary layer scheme to reduce noise
936     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
937    
938    checkpoint58n_post
939    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
940       local variable (not in common block).
941    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
942      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
943      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
944        to work with SingleCpuIO.
945    o add "_d 0" to real constant of pkg/cfc subroutines ;
946       update exp. cfc_exemple & tutorial_cfc_offline output files.
947    o multi-threading and IO:
948      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
949        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
950      - barrier before and after reading.
951      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
952      - avoid using MDS_WRITELOCAL for LAND pkg output.
953      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
954        common-block variables ; Allows multi-threading with master-thread IO.
955    o change default MAX_NO_THREADS from 32 to 4 ;
956      and stop cleanly when MAX_NO_THREADS is too small.
957    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
958    
959    checkpoint58m_post
960    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
961       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
962    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
963       keep global_ocean.90x40x15 (for AD testing) with former secondary test
964       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
965    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
966        add MITgcm_tutorials (= code + all the tutorials)
967    o ecco, option to compute cost for total ssh (mean+anom)
968    o consistent with addition of ptracer and ssh in pkg/profiles
969    o profiles: adding ptracer and ssh
970    o testreport: change multi-test output-file name
971      (from output.txt.{name} to output.{name}.txt)
972    o profiles: now ok for mutli-tiles case
973    o seaice: add 4 parameters for different advection schemes for area,
974      (effective) seaice thickness, enthalphy, and snow height. Their default
975      is the standard parameter SEAICEadvScheme
976    o calc_gw:
977     - add cosFacU in zonal viscous flux (harmonic.visc.).
978     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
979       of tutorial_plume_on_slope.
980    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
981    o calc_gw: true flux-form, account for horizontal grid spacing.
982      update rotating_tank results, but not plume_on_slope (affected at
983      truncation level, 11 digits).
984    
985    checkpoint58l_post
986    o calc_gw:
987     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
988     - remove side-drag for now (need to fix it); update plume_on_slope results.
989     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
990    o commit code to make SST/SSS weights spatially variable
991      (based on either variable in-situ or variable initial T/S weights)
992    o pkg/ecco:
993      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
994        now based on horizontally varying weights wthetaLev, wsaltLev
995      * cost_averagesflags now returns year indices in addition to day, month
996      * sflux balance is performed on annual basis
997        (sflxumm, sfluxmm2, bal_sfluxmm)
998      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
999        including separate counting and multipliers
1000    o pkg/rbcs
1001      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1002    
1003    checkpoint58k_post
1004    o testreport:
1005     - always build in dir. "build" (if not there, mkdir build instead of building
1006       & running in input)
1007     - run in dir run (if it exists), in build otherwise.
1008     - call prepare_run (if input/prepare_run exists)
1009     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1010    o pkg/exf modifications to interpolation and rotation routines for more
1011       reasonable treatment of North Pole singularity: for tracers North Pole
1012       value is set to northernmost zonal-mean value, for zonal velocity it is
1013       set to zero, and for meridional velocity it is set to northernmost value.
1014    o pkg/exf/exf_check_range.F
1015     - add tile index to diagnostics and move stop statement to the very
1016       end of the routine.
1017    o pkg/diagnostics: (diagnostics_main_init.F)
1018      define title of isomorphic variables according to the current config.
1019    o pkg/thsice with pkg/seaice dynamics:
1020    - fix domain of computation (interior only, required for exf) and do exchanges
1021    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1022    o towards a standard way of dealing with multi-threading in MONITOR
1023      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1024    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1025       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1026    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1027    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1028    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1029       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1030    o tracer advection:
1031     - clean-up and simplify calc_common_factors.F
1032     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1033       advection subroutine (but still not used within DST advection S/R)
1034    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1035    
1036    checkpoint58j_post
1037    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1038      from file (collects calls previously in FORWARD_STEP)
1039    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1040    o adjoint store dir. adjusted accordingly
1041    o genmake2
1042      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1043    
1044    checkpoint58i_post
1045    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1046      on wind stress (SEAICEstressFactor defaults to 1.)
1047    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1048      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1049    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1050      on CS-grid: no longer loosing mass.
1051    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1052    o pkg/ggl90: fix sloppy output and fix a bug
1053    o pkg/seaice: added SEAICEuseEVPpickup parameter
1054      - Set to false in order to start EVP solver with
1055        non-EVP pickup files when using SEAICEuseEVP
1056      - fix sign error in diffusion in seaice_calc_rhs
1057    
1058    checkpoint58h_post
1059    * Modifications for bottom topography control
1060      o replace hFacC by _hFacC at various places
1061      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1062      o add non-self-adjoint cg2d_nsa
1063      o update autodiff support routines
1064      o re-initialise hfac after ctrl_depth_ini
1065      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1066    * Adding verification for 5x5 box (4-layer) bottom topography control
1067    
1068    checkpoint58g_post
1069    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1070       used for mean seasonal cycle, mean diurnal cycle); add an example
1071       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1072    o pkg/ggl90:
1073      - add parameter (minimum surface kinetic energy)
1074      - fix bug (avoiding division by zero)
1075    o couple pkg/thsice to pkg/seaice:
1076      - modify advection in seaice to accomodate new scalar fields to be advected
1077      - only muliDimAdection scheme work with seaice/thsice
1078      - mapping of thsice-variables to seaice-variables, back and forth
1079      - does not break the verification experiments, but does not give the
1080        desired results either
1081    o pkg/seaice
1082      - make (default) second order advection a bit less confusing?
1083    
1084    checkpoint58f_post
1085    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1086      to pkg/seaice):
1087      - new routines thsice_map_exf and thsice_get_exf provide the interface
1088      - add an additional formal parameter to thsice_solve4temp
1089    o pkg/exf:
1090      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1091      - correct Stefan-Boltzmann constant
1092      - new parameter for longwave surface emittance
1093      - separate some stuff from exf_bulkformulae into new routines  
1094        exf_radiation, exf_wind
1095      - add new parameters and constants: longwave emissivity for ocean, ice
1096        and snow, evaporation parameters over ice
1097      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1098        either wind from stress or stress from wind
1099    o pkg/thSIce:
1100    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1101    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1102       and THSICE_CALC_THICKN
1103    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1104    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1105      to make debugging easier.
1106    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1107    o pkg/bulk_force:
1108      - clean-up comments and parameters ;
1109      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1110    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1111      generate new output for test-experiment: aim.5l_cs.thSI
1112    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1113      testreport accordingly
1114    
1115    checkpoint58e_post
1116    o SEAICE_CGRID adjoint done
1117    o R_STAR adjoint implemented.
1118      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1119      * need to sort out init. of h0facc, etc.
1120    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1121      to be able to use it in pure forward.
1122    
1123    checkpoint58d_post
1124    o upgrade simple test-experiment to tutorial example:
1125     step.1: duplicate the experiment and (step.2) will remove the old copy.
1126      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1127      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1128      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1129      tutorial_global_oce_biogeo    <- copy of dic_example
1130      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1131      tutorial_plume_on_slope       <- copy of plume_on_slope
1132      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1133      tutorial_global_oce_optim     <- empty for now (David ?)
1134      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1135     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1136    o correct a sign problem in cost_scat.F
1137    o obcs and ptracers: fix boundary conditions for advections schemes
1138      with larger stencil
1139    o thsice adjoint: start
1140    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1141      completeness
1142    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1143      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1144    o ptracers adjoint:
1145      * avoid extensive recomputatations
1146      * fix missing re-init. of gptr (missed by TAF)
1147    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1148      me to turn off the excessive output to STDOUT that this package produces
1149    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1150      and add those terms in Vector-Invariant formulation.
1151    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1152      if the control period (xx_hfluxperiod etc) is 0
1153    o in profiles pkg, clean routines and fix details
1154    o in ecco pkg, reading ssh data:
1155      fix problem in case the model does not start at iter0=0
1156    o fix mnc-pickup/restart for ptracers
1157    o new package prifiles:
1158      code to compute profile-based cost by Gael Forget
1159      (modifs in ecco, ctrl, autodiff)
1160    o Benign bug fix in initialization (spotted by M. Mazloff) of
1161      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1162    
1163    checkpoint58c_post
1164    o adjoint: finish NLFS adjoint and provide reference output in
1165      verification/global_ocean.90x40x15/results_ad_nlfs
1166    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1167      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1168      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1169      with SEAICE_CGRID defined.
1170    o move calendarDumps from "data" to "data.cal" and clean-up the code
1171      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1172    o add useEXF & useCAL flags (for now, set in hard-coded way)
1173    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1174      (were missing in NH mode, and wrong in quasihydrostatic mode).
1175      waiting for Chris updated version of calc_gw to add those CALLs.
1176    o fix bug in quasihydrostatic S/R ;
1177      add a test for this option: global_ocean.90x40x15.qshyd
1178    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1179      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1180    o add on/off flag useOffLine for package OFFLINE
1181    o seaice:
1182      - modify advection so that it works also on the C-grid
1183      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1184        problem in multi-tile runs with C-grid
1185      - add flags for clipping ice velocities and/or masking solver forcing
1186      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1187        C-grid solver
1188      - added a few comments to seaice_diffusion.F
1189      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1190        are now exclusive)
1191      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1192        required re-ordering the code a little:
1193       + make DAIRN global variable (defined in SEAICE)
1194       + move computation of the viscosities eta and zeta into a new separate
1195         routine (because I need to recompute them in seaice_ocean_stress.F)
1196    
1197    checkpoint58b_post
1198    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1199      update output.txt of exp. aim.5l_cs.thSI
1200    o various mnc cleanups and improvements:
1201      + shrink lookup tables by factor of ~4
1202      + better error reporting when running out of lookup space
1203      + able to handle longer path/file names (up to 500 chars)
1204    o adjoint:
1205      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1206      - TBD: "hidden" mom_vecinv recomp. in dynamics
1207    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1208     (allow to differentiate between forcing components using new integer flags:
1209      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1210     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1211    o ecco
1212      - enable trend removal from SSH anomaly obs.
1213    o adjoint
1214      - a fix for PmEpR when #undef EXACT_CONSERV
1215      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1216      - try to fix "hidden" recomp. in forward_step for NLFS
1217        (NLFS seems broken sometimes after I checked it in)
1218    o seaice:
1219     - add c-grid version of the dynamic solver:
1220       + three new routines that are the c-grid substitute lsr, dynsolver
1221         and ostres
1222       + put a few fields that were local to dynsolver into global common
1223         blocks, so that I can move the computation of stresses etc into
1224         seaice_lsr (saves coding but may break the adjoint).
1225     - replace more hardwired parameters by runtime parameters
1226     - add ice masks that mask the rhs of the implicit solvers where there
1227       is no ice (commented out in seaice_dynsolver, because i am not sure
1228       if this works properly), eventually this should replace the clipping
1229       of ice velocities in seaice_dynsolver to +/-40cm/s.
1230    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1231      include it only where its needed
1232    o move balancing of fluxes before the call of external_forcing_surf
1233    o seaice:
1234      - correct units of turning angles (now they are really in degrees)
1235      - move computation of GWATX/Y out of main routine into dynsolver
1236      - initialize GWATX/Y in seaice_init
1237    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1238      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1239    o seaice: add runtime flags for turning angles (default to zero)
1240    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1241      and trend from exf forcing and ctrl control adjustments
1242    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1243      (since checkpoint57x_post)
1244    o change the default rotation period to 86164.s = the Earth rotation
1245    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1246      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1247    o seaice advection: add code for choosing between the default (2nd order
1248      central differences) and multiDim advection schemes provided by
1249      pkg/generic_advdiff
1250    o seaice:
1251      - removed all references to SEAICE_GRID.h fields from
1252        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1253        (cubed-sphere configuration will change a little)
1254      - grid computations in seaice_init are obsolete now.
1255      - cleaned up code a little so that is easier to read (hopefully).
1256      - added new (better?) discretizations of default advection and diffusion
1257        (turn on with SEAICEuseFluxForm)
1258      - replace 1 in 3d global fields by kSurface in growth.F
1259      
1260    checkpoint58a_post
1261    o seaice:
1262      - bug fix in advect.F
1263    o shelfice:
1264      - separate shelfice load anomaly from pload (breaks with time
1265        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1266        Its default is 0., but it may be computed more cleverly from (unknown)
1267        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1268        done offline. A good approximation of the pressure load anomaly is
1269        necessary to avoid large initial adjustment processes underneath
1270        deep-reaching shelfice.
1271      - small fix in ISOMIP shelfice_thermodynamics
1272      - add more sophisticated thermodynamics of Hellmer (1989), this is
1273        now the default
1274      - give a few constants more intuitive names
1275    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1276      if bulk formulae are used in long integration (especially EmPmR). Turn
1277      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1278      if balancePrintMean, the imbalance that is substracted is printed to
1279      STDOUT.
1280    o fix bug (typo) in obcs_apply_eta.F
1281    o add a new package shelfice which enables us to model the circulation
1282      underneath shelf-ice with draughts of hundreds of meters.
1283     - works
1284     - to do: + include improved thermodynamics
1285              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1286                instead of new field kTopC
1287              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1288                instead of new field R_shelfIce and new code in ini_depth.F
1289                and ini_mask_etc.F?
1290              + adjust vertical mixing schemes?
1291    o seaice pkg:
1292     - add a cpp-flag to include a simple formula for a salinity dependent
1293       freezing point of sea water at the surface
1294     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1295       meridional stresses are now different (and hopefully correct)
1296    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1297       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1298       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1299    o pkg/diagnostics: add options and parameters for regional-statistics
1300       diagnostics ; define regions by reading a region-mask from a file
1301       (might add other options later)
1302    o pkg/bulk_force:
1303     - add option and parameters to use AIM surface-flux formulae.
1304     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1305       others forcing fields (defined in PARM05, parameter file "data") are loaded
1306       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1307     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1308     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1309     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1310       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1311     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1312    
1313    checkpoint58
1314    o add "--embed-source" option to genmake2 which, when the supporting
1315      tools can be compiled (as determined by genmake2) will turn on the
1316      embed_files package which then embeds the entire MITgcm source code
1317      (*.[fFhc] + Makefile) used for the build within the executable
1318      - requested by CNH but off by default
1319      - adds a paltry <9MB to the mitgcmuv executable in most cases
1320      - only writes the output when useEMBEDSRC in eedata is true
1321    o clean up 3-dim. relaxation codes:
1322      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1323      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1324      * Thanks to Tom Haine for testing!
1325    
1326    checkpoint57z_post
1327    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1328      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1329    o fix the pickup behavior for obcs in combination with ptracers
1330    o fix a bug in ptracers_external_fields_load
1331    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1332      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1333    o transfered surface NH pressure to eta field (if exactConserv).
1334    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1335         and update lab_sea output.txt file.
1336    o completing 3-dim. relaxation code: additional term
1337         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1338      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1339      * At compile time, in "EXF_OPTIONS.h" set
1340          #define  ALLOW_CLIMTEMP_RELAXATION
1341          #define  ALLOW_CLIMSALT_RELAXATION
1342      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1343          tauThetaClimRelax3Dim = 15552000.0,
1344          tauSaltClimRelax3Dim  = 15552000.0,
1345      * 3 cases:
1346          1) Use a constant-in-time 3-dim. field
1347          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1348          3) Real-time relax. to time-evolving prescribed field
1349    o Adding Laplacian-type smoothness constraint on
1350      initial and boundary (forcing) controls (ic, bc)
1351      * enable at compile-time via
1352        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1353      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1354      * Absolute scale somewhat unclear so far
1355      * no area weighting was included since no other cost term does so far
1356    
1357    checkpoint57y_post
1358    First step for a NLFS adjoint
1359    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1360    o new init. routines for calc_r_star, calc_surf_dr
1361    o still need to deal with ini_masks_etc
1362    o testreport seemed happy
1363    checkpoint57y_pre
1364    
1365    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1366    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1367    o add new offset feature to offline pkg (plus minor cleanup)
1368    o cfc fixes for final year of integration
1369    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1370      be in GCHEM_OPTIONS).
1371    
1372    checkpoint57x_post
1373    o fix testreport Pb in multiple test experiment.
1374    o cleanup our namelist syntax in verification:
1375      - make it more F95 standards compliant (some work still needed)
1376      - allows the vast majority of our tests to work with gfortran
1377    o Non-Hydrostatic:
1378     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1379     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1380    o Allow to apply AB on T,S rather than on AB(gT,gS):
1381     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1382     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1383       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1384     - need a "clever" read_pickup to restart from the other AB formulation
1385    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1386    o remove some unused variables (reduces number of compiler warnings)
1387    o adjoint
1388      * Disable useVariableViscosity for adjoint for time being
1389        (there are a number of extensive recomputations)
1390      * Initialize certain variables needed for adjoint
1391    
1392    checkpoint57w_post
1393    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1394                 fix the singleCpuIO RS version of MDSWRITEFIELD
1395       and add a WARNING if using globalFiles=T with multi-processors.
1396    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1397      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1398    o tracer advection scheme:
1399      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1400       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1401       was not very convenient).
1402      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1403       (further tests needed for the implicit DST & Flux-Limiter schemes).
1404    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1405      and sRef for convenience, handy, when you want to initialize
1406      ptracers in a large domain with a constant non-zero value. Also,
1407      untangle ptracers_init.F a little.
1408    
1409    checkpoint57v_post
1410    o change dome exp. to use variable viscosity in side-drag terms.
1411    o remove all the files from the cfc_offline test since they are now
1412      incorporated into tutorial_cfc_offline which has been producing
1413      identical results for a few days of testing
1414    o add new parameter: sideDragFactor to enable half-slip-side BC
1415      and change side-drag S/R to use viscosity from mom_calc_visc
1416      (can switch back by setting sideDragFactor=0.); affects results at
1417      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1418       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1419    o vorticity & strain are now computed without masking, to account for
1420      no-slip-side BC in variable viscosity calculation ; mask is applied
1421      anyway later on, before computing advection/coriolis terms.
1422    o modify exp4 to test new obcs support for reading from external files
1423      and for passive tracers
1424    o fix behavior of ptracers_monitor when monitor output is written to a
1425      netcdf-file; still not independent of monitor.F (writes in the same
1426      file).
1427    o change default value of tRef (put a uniform, meaningful value for ocean
1428      & atmos) and initialize sRef (was missing, as Martin mentioned).
1429    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1430      to be proportional to enstrophy dissipation length.  Thus,
1431       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1432      This is now consistent with Smagorinsky and with the manual.
1433    
1434    checkpoint57u_post
1435    o OBCS and PTRACERS: add open boundary support for passive tracers
1436      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1437        OB-values from file; this is not different from the way theta and salinity
1438        are treated
1439      - however, Orlanski-radiation conditions are not supported, and the model
1440        will stop if you use pTracers and Orlanski at the same time.
1441      - beefed up the rountine obcs_external_fields_load: now only those open
1442        boundary values are overwritten with values from files for which there
1443        are really files, otherwise the OB-fields remain untouched. This makes
1444        it possible to use different OBs at different ends of the domain (as
1445        with EXF)
1446    o reduce number of exch calls in shap_filt (s2).
1447    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1448      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1449    
1450    checkpoint57t_post
1451    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1452    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1453      same truncation, independent of the face number: affects affects several
1454      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1455    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1456      note that biharmonic viscosity + no-slip was not tested in any experiment.
1457    o fix bug in non-linear free-surf side-drag ; generate new output for
1458      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1459    o make mnc honor the writeBinaryPrec flag for most kinds of output
1460    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1461    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1462      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1463    o add brackets in multi-terms sum to get same truncation, independent of
1464      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1465      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1466    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1467      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1468      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1469      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1470      Suggested values of viscosity parameters found in mom_calc_visc.
1471      Many new viscosity diagnostics available.
1472    
1473    checkpoint57s_post
1474    o Add clearing-house for viscosity calculations, mom_calc_visc and
1475      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1476      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1477      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1478      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1479      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1480      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1481      ViscAhStrain and viscAhTension are now retired.
1482    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1483    o In response to JMC's bug report, genmake2 now ignores any soft-links
1484      that it finds in the *current* directory when searching for files.
1485      Soft-links found in any other source directories will still work as
1486      they did before.
1487    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1488      a C routine to unlimit the stack size
1489    o mnc-ify pkg/aim snapshot vars
1490    o mnc-ify pkg/land as requested by Daniel
1491    o various changes to mnc including:
1492      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1493      - output can now be grouped so that all files within a group
1494          change the ITER portion of their names in lock-step together
1495      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1496          and works with both EXCH1 and EXCH2 (but needs more testing)
1497      - writing works for all verification test cases w/ g77 on Linux
1498    
1499    checkpoint57r_post
1500    o make MNC variable initialization happen earlier
1501    o add diagnostics for (almost) each term of the momentum Eq.
1502    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1503    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1504    o remove MINIMAL_TAVE_OUTPUT option ;
1505      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1506    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1507      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1508    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1509    o add time-dependent SST, SSS control
1510    o cost terms in ecco/ modularized (new cost_generic.F)
1511    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1512    o new infrastructure for seaice model vs. obs misfits in seaice/
1513      * driver from the_main_loop.F is seaice_cost_driver.F
1514      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1515      * gradient check in Exp. 6a of natl_box_adjoint/
1516    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1517      (see README file)
1518    
1519    checkpoint57q_post
1520    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1521    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1522      - bug was reported by Jean-Michel and Ian Fenty
1523    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1524      update exp. cpl_aim+ocn output.
1525    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1526      Needed for high-res. runs with large global files
1527      to be able to limit tapelev size
1528    o Changed some tests for adjoint:
1529      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1530      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1531      * global_ocean.90x40x15/ back to default 3-level checkpointing
1532    o Modifications to enable scripted COMMON to MODULE conversion
1533      * verification/OpenAD/code/ has necessary scripts and description;
1534      * converts, compiles and runs successfully;
1535    
1536    checkpoint57p_post
1537    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1538    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1539      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1540    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1541    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1542      (was already the case for dissipation with mom_vecinv,
1543       and also the case for grad.PhiHyd when staggered-timeStep)
1544      This will allow to put dissipation out-off the AB time-stepping.
1545     Unfortunately, affects truncation error. Update output of exp. that "fails"
1546      (cg2d matching number) and leave the others for later: front_relax(10),
1547      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1548      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1549    
1550    checkpoint57o_post
1551    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1552      (2) its ready to be documented during the 20050801 DocFest
1553    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1554      for ideal_2D_oce and lab_sea on linux_ia32_g77
1555    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1556      in global1x1_tot/code_seaice_adj to access indices 32, 33
1557      (worth another tag)
1558    
1559    checkpoint57n_post
1560    o adding precip control xx_precip 32
1561    o adding swflux control xx_swflux 33
1562    o Replacing 10 forcing penalty cost routines by 1 generic.
1563    o Implementing partitioning in time-mean and variable adjustment
1564      for atmos. state.
1565    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1566    o in natl_box_adjoint:
1567      * updated exp 1 to 10
1568        (but does not have time-mean vs. variable split results yet)
1569    o updated global1x1/*_seaice_adj/
1570      to incorporate latest changes
1571    o enable useSingleCpuIO for mdsio vector routines
1572      (applies in particular to tapelev I/O)
1573    o removed inefficient K-loop in all active_file*control*.F
1574    
1575    checkpoint57m_post
1576    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1577      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1578    o pkg/exch2: filling of face-corner halo regions is optional
1579      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1580    
1581    checkpoint57l_post
1582     tag before updating tutorials (pre-release-2)
1583    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1584       for output and interpolation of input fields onto model grid)
1585    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1586       Affects results of exp. rotating_tank ; update output.txt.
1587    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1588          and taking the square quantity and/or using a fraction-weight field.
1589    o fix aim_diagnostics_init.F mate numbers.
1590    o add mnc output capability to diagnostics/diagstat and update
1591      our cvsignore files for the ACSII output generated
1592    
1593    checkpoint57k_post
1594    o lab_sea now uses diagnostics package and provides a suite of
1595      new EXF diagnostics output.
1596    
1597    checkpoint57j_post
1598    o exf
1599      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1600        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1601        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1602      * extended diagnostics output
1603        - now includes all EXF variables
1604        - hs, hl moved to common block
1605        - separate S/R for diagnostics, called after ctrl vector is added
1606        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1607        - EXFqnet contains true Qnet (i.e. includes qsw)
1608      * updated verif. lab_sea, global_with_exf
1609      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1610        to ensure that diagnostics sees a true EXFqnet
1611    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1612    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1613      several times with different frequencies.
1614    o mnc-ify the thsice package as requested by Daniel Enderton
1615      - the monitor--MNC output needs work
1616      - many attributes need to be added (most are currently blank)
1617    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1618      - many attributes need to be added (most are currently blank)
1619    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1620    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1621    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1622      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1623         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1624    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1625     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1626    
1627    checkpoint57i_post
1628    o Diagnostics package was changed: diagnostic allocation is now deactivated
1629      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1630    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1631      add 1rst Order upwind vertical Shear.
1632    o add a quick fix for A/B checkpointing in OFFLINE mode
1633    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1634      end-run around the C/Fortran linking horror in eesup/src/timers.F
1635    o added pkg/runclock: allows user to terminate run based on wall clock
1636    o added non-hydrostatic scaling parameter: nh_am2
1637    o pkg/my82: futile attempt to make results compiler-independent by adding
1638      some "_d 0", etc. no effect.
1639    o for mnc output, fill the 'T' coordinate var with myTime and create a
1640      separate 'iter' variable for iteration count
1641    o pkg/diagnostics:
1642      add new capability: output of Global/Regional & per-level statistics ;
1643      tested against monitor output (including land & thSIce) on various exp.
1644    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1645    
1646    checkpoint57h_done
1647      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1648      data.diagnostics, data.gchem, data.ptracers) is done.
1649    
1650    o pkg/diagnostics: prepare for Global/Regional statistics.
1651      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1652    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1653      and rename it: DIFFERENT_MULTIPLE
1654    
1655    checkpoint57h_post
1656    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1657    o pkg/diagnostics: change output frequency, now in seconds (instead
1658      of Nb of iterations). This requires to change data.diagnostics.
1659    checkpoint57h_pre
1660    
1661    o in mnc, let the user create the output dir if both mnc_outdir_date
1662      and mnc_outdir_num are false
1663    o add fflags() to pkg/diagnostics which allows one to specify, on a
1664      per-file basis, the file precision [default behavior is unchanged]
1665    o added diagnostics to pkg/kpp, including computation of mixed layer
1666      depth based on a temperature/density criterion
1667    o updated verification/natl_box to test the new pkg/kpp diagnostics
1668    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1669    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1670    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1671      not mnc -- this mistake was found by JMC and is now corrected
1672    
1673    checkpoint57g_post
1674    o add Adams-Bashforth 3rd Order time stepping:
1675      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1676      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1677    checkpoint57g_pre
1678    
1679    o make lambda[Theta,Salt]ClimRelax spatially varying
1680      (default remains spatially uniform constant based on tau)
1681    o added new control variables
1682      * init. uVel, vVel, etanN
1683      * lambda[Theta,Salt]ClimRelax
1684    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1685      (suggested by G. Forget)
1686    
1687    checkpoint57f_post
1688    o add parameter "baseTime" = model base time = time at iteration zero
1689      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1690      account for baseTime shift
1691    o move Coriolis arrays from PARAMS.h to GRID.h
1692    checkpoint57f_pre
1693    
1694    o mnc-ifying the seaice package
1695    o introduced an alternative length scale calculation for use in the limiting
1696      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1697    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1698    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1699      as well as grad(vort3).  Made it compatible with both approximate form
1700      for the cubed sphere and full form of these gradients.  Added flag
1701      useFullLeith to select between approximate and full form.  
1702    o add "d0" in getcon.F to reduce differences between compilers/platforms
1703      update output.txt of exp. fizhi-gridalt-hs
1704    o change port_rand funtion to allow to set the seed.
1705    o fix obscure MNC bug involving conversion between reals and integers
1706      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1707        new version is now more standards-compliant
1708    o adjoint-related modifications
1709      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1710      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1711      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1712    
1713    checkpoint57e_post
1714    o Adding eddy stress controls a la Ferreira et al.
1715    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1716    
1717    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1718      update output.txt of exp. fizhi-gridalt-hs
1719    o add more "Z" dimensions and associated coordinate vars to MNC
1720    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1721    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1722      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1723      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1724      months and years.  Requires pkg/cal.
1725    o diagnostics: add pickup functionality
1726      - off by default for backwards compatibility
1727      - current version only uses MDSIO -- MNC will be added
1728    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1729    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1730    
1731    checkpoint57d_post
1732    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1733    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1734      output from the diagnostics package
1735    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1736    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1737      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1738    o add coordinate variables to the MNC output from the diagnostics package
1739    o change MNC-flags default value: true when useMNC=TRUE
1740    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1741      the ability (off by default) to read the grid information using MNC
1742    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1743    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1744    o do snap-shot diagnostics at the middle of the time-interval (instead of
1745      at the end).
1746    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1747      new test for AIM with thSIce + slab-ocean
1748    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1749    o move state variable diagnostics to the beginning of the time step ;
1750      (note: still needs some work specially for snap-shot diagnostics)
1751      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1752    
1753    checkpoint57c_post
1754    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1755    o generate new output.txt files on faulks with g77 & the new -ieee option
1756    checkpoint57c_pre
1757    
1758    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1759      update output.txt of exp. global_ocean.90x40x15
1760    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1761      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1762    o add saltFlux(+File) forcing capability with periodicExternalForcing
1763    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1764    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1765    o improvements for the MNC output from DIAGNOSTICS:
1766      - correct handling of the unlimitied dimension
1767      - all dims now have associated coordinate variables
1768      - variables located at U, V, and Corner ("Z") points are now written
1769        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1770        *all* data points are output
1771    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1772    o added pkg/seaice/seaice_monitor.F
1773    o mdsio_readfield.F can now read files visible only to master MPI process.
1774    o pkg/seaice: some test code for ice-modified ocean stress
1775    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1776      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1777      spurious negative numbers for precipitation and humidity.  Will cause
1778      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1779    o pkg/ctrl/
1780      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1781        May be enabled via doPackDiag
1782      *  introduce z-scaling of
1783         + gradient (doZscalePack) and
1784         + control (doZscaleUnpack)
1785    o pkg/mdsio/
1786      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1787      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1788    
1789    checkpoint57b_post
1790    o simplify options in diagnostics_fill arguments (remove weird combinations)
1791    o fix MNC coordinate variables so that they now contain per-face index
1792      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1793      general, EXCH2 grids are only aligned to a "local" coordinate system
1794    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1795    o Implement instantaneous output within pkg diagnostics:
1796      setting a negative frequency in data.diagnostics produces
1797     "snap-shot" output (as opposed to time-average if freq > 0)
1798    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1799      NOTE: change ptracer diagnostics name: use 2 characters to work with
1800            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1801    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1802      becomes the coordinate variable for the 'T' dimension
1803    o add CF-style coordinate variables to MNC
1804      - just a first cut:  numbers are meaningless on the cubesphere and
1805        missing along the T axis but otherwise it works!
1806    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1807    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1808    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1809      this is based directly on what the model compute, so that the content of
1810      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1811    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1812    o clean up build options files for SunOS, in particular
1813      - remove -traditional from xmakedepend
1814      - change -xarch=v9 to -xarch=native for f77
1815      - restore use of make (not gmake)
1816      - add CC=gcc if using g77
1817    o changes per discussion of AM, JMC, & EH3 today:
1818      - move redundant "grid" variables out of "state" -- in preparation of
1819        creating proper CF-style coordinate variables and in recognition
1820        that any/all grid variables can be easily copied (eg. w/NCO) from
1821        the grid files into any of the other NetCDF files
1822      - *always* output grid variables with MDSIO (this will eventually be
1823        changed)
1824      - output MNC grid file if useMNC is true
1825    o every instance of _END_MASTER() has been found and replaced with
1826      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1827      preprocessors
1828    o re-arrange diagnostics pkg initialisation:
1829     - allow each package to extend the available diagnostics list
1830     - add some checking and fix small problems (multi-threaded, ...)
1831     - new S/R diagnostics_fill (replace fill_diagnostics):
1832       look through the short list of active diag. (instead of the long list)
1833       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1834    
1835    checkpoint57a_post
1836    o this set of changes restores TAMC compatibility
1837      tested for global_ocean.90x40x15 adjoint on trough
1838      (what a pain)
1839    
1840    checkpoint57a_pre
1841    o some modifs in tools/build_options for sunos
1842    o call ctrl_pack for ctrl at end for optimcycle=0
1843    
1844    checkpoint57
1845    o add horizontal bi-harmonic viscosity for vertical velocity
1846      - new parameter viscA4W (defaults to viscA4)
1847      - affects only non-hydrostatic code
1848      - to be done: no-slip lateral boundary conditions
1849    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1850    o implement Implicit Vertical advection for pTracers
1851    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1852      (implemented also for implicit vertical diffusion & advection)
1853    o OBCS: extend application of tracer open boundary conditions
1854      to a strip beyond the boundary of width Olx/Oly
1855    o add call monitor to TAF set of required calls (flow directives)
1856      and include in natl_box_adjoint
1857    o untangle a few ifdefs related to cost, ctrl, autodiff
1858      untangel a few ALLOW_ECCO_OPTIMIZATION
1859    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1860      (theta2, salt2 in ecco_cost_weights)
1861    
1862    checkpoint56c_post
1863    o OBCS as control variables
1864      - update ctrl_ad_diff.list, obcs_ad_diff.list
1865      - remove balance of obcs controls from default
1866      - fix index bug nobcs in ctrl_init
1867      - fix dummy fields filen in ctrl_pack
1868      - add dummy weights for obcs
1869    o lsopt: comment out fort.94 output
1870    o optim:
1871      - remove unnecessary header files
1872      - adjusted namelists
1873      - add xerbla.F to Makefile
1874    o exf:
1875      - multiple modifications of exf_check_range
1876      - unit change in exf_init_runoff from [m/year] to [m/s]
1877    o mdsio:
1878      - i/o-vector change debugLevel from debLevA to debLevB
1879    
1880    checkpoint56b_post
1881    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1882      is called from DO_THE_MODEL_IO
1883      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1884      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1885      - clean up PTRACERS_WRITE_TIMEAVE a little
1886    o add another verification experiment that tests both the cfc-pkg and
1887      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1888      reactive tendencies treated inline with regular timestepping
1889    o testreport previously did a lousy job of comparing small numbers, so
1890      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1891      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1892      testreport.
1893    o ptracers_monitor: bug fix for MPI
1894    
1895    checkpoint56a_post
1896    o GCHEM: finish reorganizating the package
1897      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1898        (introduces another 3D-array for each passive tracer, but only if
1899        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1900        gchemTendency is not needed because the timestep is done separately)
1901      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1902      - GCHEM is now---more or less cleanly---separate from PTRACERS
1903      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1904        so clear to me how that should be done in a general way.
1905    o CFC: improve formatting of output in CFC_ATMOS
1906    o PTRACERS:
1907      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1908        that ALL experiments with ptracers enable can be checked. This makes
1909        GCHEM_MONITOR obsolete.
1910      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1911        monitorFreq
1912      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1913    o add PTRACERS (PTR0[1-5]) to testreport output
1914    o exf_check_range:
1915      * default changed to .TRUE.
1916      * will check values for niter0 if debLevA, every timestep if debLevB
1917      * STOP in exf_check_range if 'out of range'
1918      * range chosen generous to allow for potential extema
1919      TBD: a version with stricter range
1920           permitted range would be runtime parameters
1921    o GMredi:
1922      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1923      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1924      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1925    o GCHEM:
1926      - move call to GCHEM_FORCING_SEP, so that it is now called before
1927        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1928      - introduced a useGCHEM runtime flag and applied it everywhere.
1929      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1930        this flag is now only visible within GCHEM-pkg routines.
1931      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1932        be replaced by a 3D array that is computed before thermodynamics; for
1933        this, the tracer ID iTracer had to be included into the parameter list
1934        of ptracers_forcing
1935      - set up forward_step to call gchem_forcing, that will replace
1936        gchem_forcing_int in ptracers_forcing
1937      - cleaning up
1938    o small cleaning of exch2: remove files that are also in eesupp/src
1939    
1940    checkpoint56
1941    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1942    o mnc: cleanup "full" files--fixes out-of-memory problem
1943    o ECCO-GODAE
1944      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1945      * fully merged and updated from SIO code
1946        windstress sign change affects
1947        - exf_inscal_[u/v]stress
1948        - sign of xx_tau[u/v] adjustments
1949        - signs in cost_scat
1950      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1951      * natl_box_adjoint updated and compressed
1952      * 2-level checkpoint switch added
1953        (tested in EXP. 1 of natl_box_adjoint)
1954      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1955    o SVD
1956      * first complete, non-hacked version for SVD calculations
1957      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1958        performed via direct access files admtlm_vector.it????
1959        (via ctrl_[un]pack)
1960      * optimcycle is used for ARPACK iteration counter
1961        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1962      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1963        and add linear transforms where necessary
1964      * controls are initial/final SST, SSS (can be extended; need to check
1965        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1966    o mdsio: filename info to both stderr, stdout
1967    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1968      from sign change
1969    
1970    checkpoint55j_post
1971    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1972      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1973    o add consistent build directories and .cvsignore files to verification
1974    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1975    o make all subroutines 30 or less characters in length for certain older
1976      compilers to work (a thorough search only turns up two routines in
1977      pkg/ptracers)
1978    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1979      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1980    
1981    checkpoint55i_post
1982    o change arrays for total vertical diffusivity (2.D if explicit,
1983      3.D if implicit) ; each ptracer uses its own background value.
1984    o added mnc/NetCDF output capability to ocn_compon_interf
1985      - added bits to verification/cpl_aim+ocn so that it can run on
1986        ITRDA and other clusters without the mpirun "-wd" option
1987    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1988      configuration
1989    o give MNC the ability to create additional files rather than
1990      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1991      - the default is just less than 2GB which is a practical limit
1992        on many systems
1993    o Compute the non-local term using either KPP vertical diffusivity (=default)
1994       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1995    
1996    checkpoint55h_post
1997    o add verification test "vermix"
1998    o remove all the *_ioinc flags and replace with the single global
1999      outputTypesInclusive flag
2000    o allow to set a vertical profile of vertical diffusivity for T & S
2001    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2002    o useMNC moved from data.mnc to data.pkg
2003    
2004    checkpoint55g_post
2005    o Renaming carbon AD experiments to comply with testreport conventions
2006    o Updating adjoint of Held-Suarez hs94.1x64x5
2007    o Fixing directives for non-ECCO forward_step, after ECCO directives
2008      have been fixed to avoid recomp. of do_oceanic_phys
2009      Works well for global_ocean.90x40x15,
2010      but recomp. issue remains for carbon
2011    o Updating adjoint output for natl_box_adjoint after
2012      pkg/ecco has been modified (see taga c55d_post)
2013    
2014    checkpoint55f_post
2015    o rename to timeave_init_fixed
2016    
2017    checkpoint55e_post
2018    o some delicate re-shuffle of store directives to avoid one
2019      extra call of do_oceanic_physics
2020      affects ecco_the_main_loop.F, do_oceanic_physics.F
2021      checkpoint_lev1_directives.h
2022    o NB: this may break global_ocean adjoint temporarily,
2023      but it is clear how to fix it. Will do later, need this now.
2024    
2025    checkpoint55d_post
2026    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2027    o ecco_cost_weights is modified to 1x1 runs
2028    o modifs to allow observations to be read in as
2029      single file or yearly files
2030    o enable to read exf forcing fields as either
2031      single file or yearly files (flag useExfYearlyFields)
2032    checkpoint55d_pre
2033    
2034    o switch between 2-level and 3-level checkpointing
2035    o add ability of MNC to write local and "partial" (eg. 2D slices where
2036      the full 3D field is never actually stored) arrays to NetCDF files
2037      with the correct (that is, the complete multi-dimensional) set of
2038      array indicies
2039      - used in mom_vecinv() to write the diagFreq output
2040      - tested (demonstrated) in verification/aim.5l_cs
2041    o further mnc-ification
2042      - add verification/lab_sea to the list with mnc setups
2043      - fix undefined mnc v-names in cd_code
2044      - add kpp to mnc output (both snapshot and timeave)
2045    o non-hydrostatic code
2046      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2047        in calc_gw.F
2048      - defaults to viscAh
2049      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2050        friction or Leith) in non-hydrostatic mode, as long as there is
2051        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2052    o pkg/cost
2053      extend simple cost functions to treat time mean quantities
2054      (T,U,V) via cost_accumulate_state from cost_tile
2055    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2056        be 2 times larger than the minimum size the advection scheme requires.
2057        now get a perfect conservation of salt in advect_cs test-exp (updated)
2058    o GGL90 (Gaspar's TKE mixed layer)
2059      - add horizontal diffusion of TKE, requires exchanges in
2060        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2061        default. In OPA there is no horizontal diffusion of TKE but the
2062        mixing coefficients are computed from a horizontal average of TKE of
2063        6 points or so. I think that diffusion has a little more physical
2064        justification.
2065      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2066        was in vain)
2067      - mask tke-variable in ggl90_init
2068    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2069    o fix biharmonic diffusion on CS-grid.
2070    o more obcs stuff
2071      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2072        for reading boundary values. This routine is called from
2073        obcs_prescribe_read
2074      - updated obcs_check
2075      - changed sponge layer relaxation parameter units for days to seconds
2076      - turned off sponge layer by default
2077      - changed argument list of OBCS_CALC to myTime+deltaTclock
2078      - fixed about 35 bugs in obcs_external_fields_load
2079    
2080    checkpoint55c_post
2081    o obcs stuff
2082      - new runtime flags useOBCSprescribe, useOBCSbalance
2083      - re-arranged obcs_calc
2084      - moved exf_getobcs to obcs_prescibe_read
2085        obcs_prescibe_read is called after ORLANSKI stuff
2086        and independent of it (executable can contain all).
2087      - updated obcs_check
2088      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2089        These may be necessary only if tangential velocities are
2090        prescribed at OB, not sure, needs testing.
2091    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2092      which simplifies the calls and passes the ifc check-bounds test
2093    
2094    checkpoint55b_post
2095    o add a 2D scalar, Z location, exchange_2 routine.
2096    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2097      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2098      affects advect_cs results (for the wrong reason): update output.txt
2099    o use a more standard discretization for biharmonic viscosity ;
2100     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2101      affects results of dome set-up: update output.txt
2102    o fix gad_advection.F (CubedSphere part), back to version 1.23
2103    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2104    
2105    checkpoint55a_post
2106    o merged code to
2107      * prescribe/read time-dependent open boundaries
2108        (works in conjunction with exf, cal)
2109      * sponge layer code for open boundaries
2110      * each boundary N/S/E/W now has its own CPP option
2111        (healthy for the adjoint)
2112    
2113    checkpoint55
2114    o up-to-date adjoint of previous breaks
2115      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2116      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2117      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2118      - carbon: * remove tr1-related adjoint verification
2119                * add ptracer as control variable
2120    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2121      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2122    
2123    checkpoint54f_post
2124    o in verification/carbin/ remove experiment related to
2125      ALLOW_PASSIVE_TRACER (array tr1 etc)
2126      code_ad/ input_ad/ results_ad
2127    
2128    o add two new packages
2129      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2130        + subject to optimization (memory)
2131      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2132        + subject to reordering (many GOTOs in the original code)
2133        + so far opps is called for every (i,j) point, and then operates in
2134          the vertical; one may want to reorder the scheme in order operate in
2135          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2136          fields)
2137    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2138      - all verification tests compile and run with linux_ia32_g77
2139      - defaults are compatible with current input files--nothing
2140        should change if you were not previously using MNC
2141      - MNC output has been added in numerous places (eg. timeave)
2142        but there are still a few writes not yet do-able with MNC
2143        (this is in progress)
2144      - flags now allow for either/or/both use of MDSIO and MNC and
2145        documentation will soon follow
2146      - numerous small formatting cleanups for ProTeX
2147    o add version info (via BUILD_INFO.h) to MNC and stdout
2148    
2149    checkpoint54e_post
2150    o add two new packages
2151      - pp81 (Packanowski and Philander, 1981), Richardson number and
2152        stratification dependent mixing
2153      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2154      - these scheme operate in a similar manner as KPP (without ghat, of
2155        course), however there is only one diffusivity that is used for both
2156        temperature and salinity (and passive tracers)ç
2157    o add offline package
2158    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2159      provided by Stephanie Dutkiewicz
2160    o genmake2: add ability to search for C compilers and cleanup test output
2161      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2162    
2163    checkpoint54d_post
2164    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2165    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2166      leading to additional shift by 5 days each year of integration
2167       (i.e. leading to considerable offset over the years)
2168    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2169    o start with no AB and no initial filtering (staggerTimeStep):
2170      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2171    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2172      (external loading & cpl import/export stay in forward_step.F)
2173    o update coupling interface to work with new staggerTimeStep
2174    o change MDSIO ptracers_pickup.
2175    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2176    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2177    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2178    
2179    checkpoint54c_post
2180    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2181      this affects (truncation error) output.txt of test-exp:
2182       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2183    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2184    o change Qnet to always be the net heat flux, (+upward).
2185      affects (truncation error) output of natl_box exp.: updated
2186    o define the max number of passive tracers in PTRACERS_SIZE.h
2187    o start to test mnc routinely in exp0
2188    o add sea-ice loading (sIceLoad) as a new forcing field.
2189    
2190    checkpoint54b_post
2191    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2192       impressive on Altix and Opteron systems)
2193    o diagnostics can now write NetCDF files through the mnc package
2194    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2195    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2196    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2197      affects (truncation error) output of lab_sea & natl_box exp.: updated
2198    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2199    
2200    checkpoint54a_post
2201    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2202    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2203    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2204    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2205      + internal_wave (shift in writing cg2d_ini_res)
2206    checkpoint54a_pre
2207    
2208    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2209      - modified verification/lab_sea and natl_box_adjoint accordingly
2210    
2211    checkpoint54
2212    checkpoint53g_post
2213    o prepare splitting of thermodynamics: store convect.counter in common block
2214    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2215      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2216    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2217    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2218    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2219    o restore adjointability
2220    
2221    checkpoint53f_post
2222    o modifications that affect AIM experiment results (update output.txt):
2223      - no advection of S at top interface Nr (pkg/generic_advdiff)
2224      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2225    o AIM pkg:
2226      - include stability function into surf.Flux derivative relative to Tsurf
2227      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2228    
2229    checkpoint53e_post
2230    o merged cylindrical coord configuration
2231    o added rotating_tank experiment
2232    checkpoint53e_pre
2233    
2234    checkpoint53d_post
2235    o faulks upgraded: re-generate output.txt that have changed:
2236       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2237    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2238    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2239    o added Sadourny discretization of Coriolis
2240      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2241      - re-enabled use of omega3 (useAbsVorticity)
2242    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2243      vector-invariant equations
2244      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2245    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2246      hopefully without new bugs
2247      - still to do: biharmonic friction for non-hydrostatic w
2248    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2249    o regenerated output for global_ocean_ebm (using -ieee)
2250    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2251      of mom_common/
2252      - simple re-arrangement of instructions within computing loop
2253    checkpoint53d_pre
2254    
2255    checkpoint53c_post
2256    o new version of coupler for AIM+thSIce and Ocean models
2257     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2258     - land: change Evaporation of snow
2259     - aim with thSIce: fix bug in snow-precip.
2260    o changes to calc_gw.F
2261     - bug fix for w^2 term near the bottom boundary
2262     - (hopefully) improve the lateral slip boundary condtions for use with
2263        partial/looped cells
2264      - because the bug fix changes two verification experiments anyway (exp5
2265        and plume on slope), change the lateral boundary condition from half slip
2266        to the value of no_slip_sides
2267    o ebm package wasnt quite up to the parallel task. Fixed that.
2268    o Adjoint of EBM package + verification
2269      * TLM OK
2270      * ADM not sufficient accuracy yet (needs further testing)
2271    
2272    checkpoint53b_post
2273    o Commiting new energy balance model to repository
2274      * package is pkg/ebm
2275      * verif. is verification/global_ocean_ebm
2276      * references are in ebm_driver.F
2277    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2278    C        Global thermohaline circulation. Part I:
2279    C        Sensitivity to atmospheric moisture transport.
2280    C        J. Climate 12(1), 71-82
2281    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2282    C        Global thermohaline circulation. Part II:
2283    C        Sensitivity with interactive transport.
2284    C        J. Climate 12(1), 83-91
2285    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2286    C        Destabilization of the thermohaline circulation
2287    C        by atmospheric eddy transports.
2288    C        J. Climate 7(12), 1870-1882
2289    o Will need long integration testing.
2290    checkpoint53b_pre
2291    
2292    o created pkg/mom_common in preparation for variable viscosity code
2293    o renamed and split ini_mnc_io
2294    o pkg/land: only liquid water can diffuse or run-off
2295    o AIM using land: soil wetness availability account for snow
2296    o added printMapIncludesZeros to EEPARMS namelist
2297    
2298    checkpoint53a_post
2299    o restore TAMC compatiility for exf_constants.h
2300      (no usage of _d in .h)
2301    o Additional storing in KPP in an attempt to fix
2302      TAMC problem with adjoint of KPP code.
2303      (no success...)
2304      Identical code works fine with TAF.
2305    o Fixed verification/natl_box_adjoint experiments.
2306      Initial conditions for Experiments 4 and 5 are now
2307      set to "SEAICE_initialHEFF=0", which is more reasonable,
2308      and hence gives results closer to that of Experiment 2.
2309      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2310    
2311    checkpoint53
2312    o stable checkpoint with up to date adjoint
2313      TLM tests only run for 1st grdchk at the moment. Its unclear if
2314      this is a code problem or a problem with resetting code for g_
2315      variables that is being autogenerated wrong.
2316      Otherwise:
2317       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2318       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2319         are both still in chaos following their security messes.
2320    
2321    checkpoint52n_post
2322    o various build (mostly genmake2) changes including:
2323      - ability to build/run more easily within Cygwin and MacOS X
2324      - more complicated Makefiles with a stronger dependence on Gnu Make
2325    o pkg/seaice modifications
2326      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2327        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2328        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2329      - changed proxy for geostrophic velocity and updated
2330        verification/lab_sea/results/* accordingly
2331      - removed ADI dynamic solver from pkg/seaice
2332      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2333        they caused a segmentation fault under certain circumstances
2334      - removed unused field WATR
2335    o bug fix in exf-package:
2336      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2337         now reflect that.
2338    o small fixes in the cal-package:
2339      - set reference date to first of January for the 'model'-calendar
2340      - failing of cal_CheckDate in cal_FullDate now actually results in a
2341        warning
2342    o small modifications in exf-package to increase flexibility:
2343      - change climtempfreeze from a constant to a runtime parameter that
2344        is specified in data.exf_clim (default = -1.9)
2345      - introduce runtime parameter windstressmax (default = 2.0) that is
2346        specified in data.exf
2347    o fix in pkg/thsice:
2348      - update Evap (Tsf changes) to be consistent with Latent heat flux
2349      - maintain snow precipitation unchanged (even if Tsf >=0).
2350     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2351    
2352    checkpoint52m_post
2353    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2354      this does not change any of the results, because myIter=0 in swfrac always
2355      lead to jwtype=2 (the default anyway), but the call makes little sense
2356      as a default
2357    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2358    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2359      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2360    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2361    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2362    o extending useSingleCpuIO option to work with new exch2 I/O format
2363      - old-style, missing-tile I/O is still accessible by defining CPP
2364        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2365    o monitor package can write to NetCDF files and/or STDOUT
2366    o fix re-definition bug in MNC_GRID_INIT_ALL()
2367    o doc/api_reference added
2368      - a framework for building an API Reference Manual using all
2369        the "protex" comments embedded in the code
2370      - see pkg/generic_advdiff, pkg/mnc for examples
2371    o MNC:
2372      - make myThid the last argument for all subroutines
2373      - new default for the grid files: NO halos
2374      - add useMNC and other run-time flags
2375      - separate per-file-group handling of the unlimited dimension
2376      - early initialization of MNC w/ flags read at the eeboot stage
2377        and lookup tables set in initialize_fixed
2378      - write all MNC output to a freshly-created directory
2379    o thermodynamics sea-ice (thsice) is now tested with testreport.
2380    o test exp. advect_cs: use the standard cs32 grid ; update output.
2381    o Added functionality to grdchk:
2382      pick global i,j,k position (or nearest wet) where to perform check.
2383    
2384    checkpoint52l_post
2385    o new land formulation:
2386      a) use ground enthalpy as prognostic variable to ensure exact
2387         energy conservation.
2388      b) account for water temperature and for latent heat of freezing
2389         in all processes (rain, run-off, ground storage)
2390      c) compute surface and ground temperature implicitly.
2391    o aim_v23 modification for new land model:
2392      a) Treat separately land / ocean / sea-ice surface fluxes
2393         to allow implicit computation of land & sea-ice surface temp.
2394      b) add snow precipitation.
2395    checkpoint52l_pre
2396    
2397    o fix problem (when 1 tile is empty) in min/max monitor.
2398    o fix bug in timeAve (u,vZetatave in common block)
2399    o no restoring terms under ice for pkg/seaice
2400    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2401    o bug fix for pkg/seaice pickups
2402    o change MNC call locations and add coordinate attributes
2403    o mask vorticity at the corner ; affects global_ocean.cs output
2404    o fix ini_curvilinear_grid ; test CS experiments with mpi
2405    o aim.5l_cs: modify sea-ice fraction input file ; update output
2406    o exf: Adding simple range check routine for exf fields after read
2407    
2408    checkpoint52k_post
2409    o removed top-level directory "diags"
2410      - we migrated these functions to pkg/timeave a long time ago
2411    o fixed bug introduced in pkg/monitor
2412    o accuracy ctrlprec = 32 insuffient for gradient checks using
2413      averaged fields (I/O via cost_averages)
2414      -> use ctrl.h in active_file*.F to control I/O precision.
2415    o paramter list of CALL ADTHE_MAIN_LOOP
2416    o added initial do_the_model_io to ecco
2417    o set all ...Freq to zero after cost_final
2418      taveFreq, dumpFreq, pChkptFreq
2419    o MAIN and ECCO differentiability restored
2420    
2421    checkpoint52j_post
2422    o fix nchklev in tamc.h for global_ocean...
2423    o Bringing flow and store directives up-to-date
2424    o Really weird thing!
2425      call do_the_model_io from the_main_loop with parameters
2426      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2427      TAF places a faulty re-call of initialise_varia
2428      after cost_final call which should not be there!
2429    checkpoint52j_pre
2430    
2431    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2432      error messages
2433    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2434    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2435      debug output
2436    o modfied mdsio_writefield.F to handle non-global files under exch2
2437    o update AIM Cubed-Sphere exp (aim.5l_cs):
2438      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2439    o update AIM Equatorial Channel exp:
2440      use standard aim_v23 pkg and change the SST fields to be more realistic.
2441    o globalFile now works with exch2
2442    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2443      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2444    o limit timeave output for hi-res integrations
2445    
2446    checkpoint52i_post
2447    o removed CPP_EEOPTIONS.h from verification/*/code
2448    o updated the tiling for global_ocean_pressure
2449    checkpoint52i_pre
2450    
2451    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2452      the old pkg/aim).
2453    
2454    checkpoint52h_pre
2455    o shortened offending lines in exch2_send_rx?.template
2456    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2457    o genmake2: add build & execute test for NetCDF code
2458    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2459      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2460    o added useSingleCPUIO flag to monitor.F and mon_out.F
2461    o added temporary hack for sea-ice dynamics on the cube:
2462      metric terms are ignored and it is assumed that
2463      there is no sea-ice on cube faces 1, 2, 4, and 5.
2464    
2465    checkpoint52f_post
2466    o added exch2 cube routines to pkg/exch2
2467    o modified hs94.cs-32x32x5 to use it
2468    o added new grid files to hs94.cs-32x32x5
2469    checkpoint52f_pre
2470    
2471    checkpoint52e_post
2472    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2473      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2474    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2475      to work with implicit vertical advection and AB ;
2476    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2477    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2478     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2479    checkpoint52e_pre
2480    
2481    o fix bug in impldiff when Nr=1 or Nr=2.
2482    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2483    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2484    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2485      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2486    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2487    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2488    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2489    
2490    checkpoint52d_post
2491    o re-tiled many expts to allow comparison in multi-processor mode
2492      - updated output accordingly
2493      - changed hs94.128x64x5 to use intial T from file rather than use the
2494        random number generator
2495    o add infrastructure in model routines for fizhi and gridalt packages
2496    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2497    o changes to permit hi-res, cubed-sphere, configuration
2498      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2499      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2500      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2501        of surface winds for the cube
2502      (A verification experiment, based on global_ocean.cs32x15, but with
2503       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2504       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2505       complete with example surface forcing files and matlab scripts to look
2506       at the output and compare it with that of global_ocean.cs32x15.)
2507    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2508       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2509       to conform to the common rule.
2510    o check-in the first version of the coupler + interfaces for multi-components
2511       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2512       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2513       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2514       - ocean and atmos. share the same horizontal grid (no interpolation).
2515       - exchanges between component and coupler is done in forward_step
2516    o new verification experiment, cpl_aim+ocn:
2517       coupled ocean - AIM atmosphere on cs32 grid.
2518    
2519    checkpoint52d_pre
2520    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2521    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2522    
2523    checkpoint52c_post
2524    o Fixing OPTIONS files for use of exf:
2525      - ALLOW_ECCO not needed
2526      - ECCO_CPPOPTIONS.h should not be included from
2527        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2528        as has been the case in the past
2529      - All cal/exf related options are currently set in
2530        single header file. Should remain so until we
2531        agree on a consistent new policy.
2532    o Removed all CPP options for cal package.
2533      cal has no more CPP options.
2534    o modified STOREs in GAD_ADVECTION
2535    o corrected key comp. for passkey
2536    
2537    checkpoint52b_post
2538    o new version: "thsice" of thermodynamic sea-ice pkg:
2539     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2540     - modify fluxes but do not change theta directly;
2541     - light cleaning of bulk_force pkg (still needed with thsice).
2542     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2543       + output_thsice.txt to test thsice & bulk_force pkgs.
2544    o put back grid & coriolis monitor output.
2545    checkpoint52b_pre
2546    
2547    o call "do_the_model_io" at the beginning (=> dump initial state)
2548    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2549    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2550      (need info on NUMBER_OF_PTRACERS)
2551    o missing PTRACERS headers in some routines
2552    o default tamc.h in pkg/autodiff supposed to crash
2553      to ensure proper customization
2554    
2555    checkpoint52a_post
2556    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2557      - moved surfaceTendencyTice from pkg/seaice to main code
2558      - subroutine FREEZE_SURFACE now limits only surface temperature
2559        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2560        => new output.txt for global_ocean.cs32x15 & global_with_exf
2561      - keep the old version of FREEZE for backward compatibility;
2562        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2563      - corresponding modifs for TAF directives
2564    o added surface flux output variables to TIMEAVE_STATVARS
2565    o time-averaged output for pkg/ptracers
2566    o fix problem with ECCO-related divided adjoint
2567      snapshot file was missing some ad-variables,
2568      but no warning issued by TAF
2569    
2570    checkpoint52a_pre
2571    o some bug fixes for #undef REAL4_IS_SLOW
2572    
2573    checkpoint52 = ecco_c52_e35
2574    o after testing adjoints of checkpoint51u_post
2575    
2576    checkpoint51u_post
2577    o this is the post-merge tag of the ecco-branch
2578      (needs another clean checkout and re-testing)
2579    o various natl_box_adjoint configs and results
2580      but no input fields
2581    o obcs adjoint not yet merged!
2582    o adding ECCO global 1x1 and 2x2 degree configs
2583    o updated/extended some store directives for seaice
2584    o pkg/ecco now containes ecco-specific part of cost function
2585    o top level routines the_main_loop, forward_step
2586      supersede those in model/src/
2587      previous input data.cost now in data.ecco
2588      (new namelist ecco_cost_nml)
2589    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2590    
2591    checkpoint51t_post
2592    o this is the pre-merge tag of the ecco-branch
2593    
2594    checkpoint51s_post
2595    o cleanup: removed various obsolete #define-s
2596    o pkg/grdchk
2597      - renamed 'ph-grd 3' to 'grad-res'
2598      - merged from ecco-branch
2599        (remaining bug fixes for obcs gradient checks)
2600      - additional high-precision output for testreport
2601        (grep for 'precision_grdchk_result')
2602    
2603    checkpoint51r_post
2604    o cleaned up or removed CPP_OPTIONS.h files
2605    o updated results for some of the tests to reflect the new
2606      optfiles (-ieee: -O0 instead of -O3)
2607    
2608    checkpoint51q_post
2609    o cd_code:
2610      - moved cd_scheme.F -> cd_code_scheme.F
2611      - separate read_checkpoint from cd_code_ini_vars.F
2612      - separated cd_code part from write_checkpoint
2613      - updated AD_SOURCE, generated .flow
2614      - added CD_CODE_VARS.h to the_main_loop
2615      - Moving cd_code specific store dir.s to pkg/cd_code
2616    o ctrl package totally restructured
2617      - pack/unpack now optional and decoupled from
2618        xx_/adxx_ I/O
2619      - ctrl_pack/unpack cleaned
2620        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2621      - confined inclusion of AD_CONFIG.h to where necessary.
2622    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2623    
2624    checkpoint51p_post
2625    o create initial cd_code package
2626      - WARNING: the initialization of fields within packages
2627        is broken because INI_FIELDS (where READ_CHECKPOINT is
2628        called) is called *before* PACKAGES_INIT_VARIABLES.
2629        This seems to be backwards since
2630        1) its important to initially zero the entire field including
2631           the "halo" region
2632        2) zeroing needs to be done *before* reading pickup info
2633           and the pickup call might or might not happen in any
2634           particular run
2635      - this needs an overhaul for R2
2636    o cleanup verification/*/code/GMREDI_OPTIONS.h
2637    o cleanup testreport
2638    
2639    checkpoint51o_post
2640    o bringing AD-related verif's up to date with genmake2
2641      - carbon/
2642      - global_ocean.90x40x15/
2643      - hs.94.1x64x5/
2644      - (front_relax/ )
2645    o (more) consistent directory structure for AD-related verif.'s
2646    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2647    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2648    o bug fix in find_alpha.F for MDJWF:
2649      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2650        change rho -> rho-rhoConst
2651      - replace call find_rho to find_rhonum
2652    o initialisation of rFlx extended to full array (required by TAF)
2653      and shifted to thermodynamics
2654    o removed PTRACERS.h in ptracers routine
2655    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2656    o Correcting initialisations for fVerU, fVerV.
2657    o helping TAF to recognize dependency on kUp for
2658      fVerU, fVerV
2659    o Replacing delZ by delR in pkg/ctrl/
2660    checkpoint51o_pre
2661    
2662    o undid all of cp51 pending some cleanups and discussion
2663    o added the [#include "AD_CONFIG.h"] statement to all files that need
2664       it for adjoint/tl #defines
2665     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2666     o removed tools/genmake since it no longer works
2667    
2668    checkpoint51n_post
2669    o modifications to make FREEZE flux visible to pkg/kpp
2670      - moved surfaceTendencyTice from pkg/seaice to main code
2671      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2672      - subroutine FREEZE now limits only surface temperature
2673        (this means new output.txt for global_ocean.90x40x15,
2674         global_ocean.cs32x15, and global_with_exf)
2675    o added surface flux output variables to TIMEAVE_STATVARS
2676    
2677    checkpoint51n_pre
2678    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2679    o added [#include "AD_CONFIG.h"] to all files that use the following
2680      defines:
2681      - ALLOW_ADJOINT_RUN
2682      - ALLOW_TANGENTLINEAR_RUN
2683      - ALLOW_ECCO_OPTIMIZATION
2684    
2685    checkpoint51m_post
2686    o incorporating changes to get TAMC/TAF working in genmake2
2687      - added new TAMC/TAF targets to the Makefile
2688      - various cleanups related to package handling
2689      - these changes should have no impact on the forward model
2690    
2691    checkpoint51l_post
2692    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2693     - faster algorithm for cal_addtime.F
2694     - higher precision arithmetic, where needed
2695     - pkg/exf *startdate variables changed from calendar date to
2696       model integration time
2697    
2698    checkpoint51l_pre
2699    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2700    o enable to apply restoring on S & T only in a latitude band.
2701    o update output (external_forcing_surf modif. change truncation errors)
2702       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2703    
2704    checkpoint51k_post
2705    o change default to: useNHMTerms=.FALSE.
2706     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2707       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2708     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2709        exp1, ideal_2D_oce
2710     - change data file of oceanic exp (leave the results unchanged for now)
2711       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2712    o set gravitySign automatically according to the vertical coordinate used
2713      (and change sign: back to "logical" value: +1 when R increases downward)
2714    o added an include barrier to the default CPP_OPTIONS.h and
2715      removed the #include "PACKAGES_CONFIG.h" from it
2716    o fix a bug in mom_fluxform (from chk51j_post)
2717    
2718    checkpoint51j_post
2719    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2720    o adjusted some flow directives (dynamics, thermodynamics)
2721    o added cubed-sphere case to test cost function
2722    o heckpoint_lev?_directives.h now include
2723      pkg-specific directives, whenever those are enabled.
2724    o Moving pkg-specific flow directives to corresponding pkg
2725      Moving pkg-specific differentiation list to corresponding pkg
2726      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2727      ---> conventions are
2728           - pkg_ad.flow
2729           - pkg_ad_diff.list
2730           - pkg_ad_check_lev?_dir.h
2731    
2732    checkpoint51i_post
2733    o merge of the branch-genmake2
2734      - knowingly breaks the older genmake
2735      - automatic generation of all ALLOW_${PKG_NAME} defines
2736      - new testreport supersedes older testscript
2737    o large number of package inclusion and header cleanups
2738    checkpoint51i_pre
2739    
2740    o new output for adjoin of global ocean vector invariant
2741    o fix for checkpoint of thermodynamic seaice and bulk_force
2742    o Steph gchem various cleanups
2743    
2744    checkpoint 51h_pre
2745    o fixed some single quotes
2746    o modify gchem pkg to be more versatile
2747    o modifications to clean up dic pkg
2748    o add pkg/cfc
2749    
2750    checkpoint51g_post
2751    o provide links for ARPACK and ADM*TLM
2752    o start removing verification/vero/
2753    o update AD-related stuff
2754      (in particular some IF-statements in model/src/ routines)
2755    o adding to verification/global_ocean.90x40x15/ adjoint of
2756      vector invariant setup
2757    
2758    checkpoint51f_post
2759    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2760    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2761      of tracer Green's fucntions for ocean inversion project.
2762    
2763    checkpoint51f_pre
2764    o Added on-the-fly spatial interpolation capability
2765        "USE_EXF_INTERPOLATION" to pkg/exf.
2766      - This is a temporary Cartesian-grid hack until
2767        the super-duper ESMF coupler becomes available.
2768      - See verification/global_with_exf/README for usage example.
2769      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2770        flags and modified pkg/seaice accordingly.
2771    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2772        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2773        non-local transport term.
2774    
2775    checkpoint51e_post
2776    o pkg/mom_vecinv:
2777      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2778      - add time-ave diagnostic of vorticity advection.
2779    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2780    o atmospheric geopotential: - include water vapor effect;
2781                                - use p^kappa in p* scaling.
2782    o land pkg: read initial state from files.
2783    o AIM : add stratospheric drag in the upper level
2784    
2785    checkpoint51d_post
2786    o change function ILNBLNK (=> last non-blank char.) to return zero
2787      (instead of the string length) when the string. char is empty
2788    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2789    o modif's to restore TAMC compatibility
2790      - avoid "_d" constructs in PARAMETER declarations
2791      - avoid interrupting lines by comment lines
2792    o Use cluster local disks for purely local I/O
2793      vs. globally visible disks needed for ctrl stuff
2794      (merged from ecco-branch)
2795      - new active_file_loc... and mdsio_..._loc routines
2796      - affected packages: autodiff, ctrl, grdchk, mdsio
2797    
2798    checkpoint51c_post
2799    o introducing integer flag debugLevel
2800      - debLevZero: suppress all output
2801      - debLevA: standard
2802      - debLevB: equivalent to current debugMode=.TRUE.
2803    o introducing pathname variable mdsioLocalDir for mdsio
2804      that can be specified at runtime
2805      (relevant for cluster I/O to local disk)
2806    `
2807    >>>checkpoint51b_post
2808    adjoint of ptracers
2809    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2810    o extended state in checkpoint_lev?, etc.
2811    o alternative ctrl/cost with tr1 or ptracer
2812    o new comlev1_bibj_ptracers
2813    o new ptracers.flow
2814    o made ptracers_forcing same as external_forcing_s
2815    o added verification for adjoint with ptracers
2816      - adm. grdchk fail so far
2817      - tlm. grdchk OK
2818      - checked tapelev/comlev recomputations: OK
2819    <<<checkpoint51b_pre
2820    
2821    checkpoint51a_post
2822    o added code for biogeochemistry package
2823      - new pkgs: dic, gchem
2824      - new subroutine in ptracers
2825    o modify code for biogeo packages
2826      - in model/src and pkg/ptracers
2827    
2828    checkpoint51
2829    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2830      - autodiff, ctrl, exf, grdchk, seaice
2831      kept separate packages
2832      - cost, ecco, obcs
2833    o updating verification/internal_wave, verification/lab_sea
2834      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2835    
2836    checkpoint50i_post
2837    o Preparing next differentiable checkpoint and sync
2838      of MAIN vs. ecco-branch
2839      - 1st step: this one is differentiable
2840      - 2nd step: next(! not this) checkpoint will have updated packages
2841                  from ecco-branch)
2842    
2843    checkpoint50h_post
2844    o new package "land": provide surface BC for AIM.
2845    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2846    o AIM: use true log-P extrapolation for near surface temp (= as in
2847        F.Molteni paper) ; update aim.5l_cs output.
2848    o New variable in PARM03 for more flexible pickups
2849    o somewhat cleaned package initialisation sequence for
2850      ctrl/ cost/ ecco/ in packages_... routines
2851    
2852    checkpoint50g_post
2853    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2854      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2855      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2856        made the default because of faster convergence than ADI
2857    
2858    checkpoint50f_post
2859    o exf totally restructured
2860      - replaced all exf_set_ routines by one generic exf_set_gen.F
2861        and made sure it's still differentiable
2862      - split exf_getffields.F into new exf_bulkformulae.F
2863      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2864      - updated adjoint/makefile and relevant verif. accordingly
2865    
2866    checkpoint50f_pre
2867     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2868          + change Evap over land. (update aim.5l_cs output)
2869     o added missing .cvsignores and made uniform across expts
2870     o changed configuration of tidal_basin_2d expt
2871     o added pkg/debug functions for tracing code in fatal crashes
2872     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2873     o new fn in pkg/monitor to stop model if solution grows too big
2874     o removed lots of single quotes from comments
2875    
2876    checkpoint50e_post
2877    o make KPP work with PTRACERS
2878     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2879       nearly a copy of kpp_transport_s
2880     - there is no analogue to SurfaceTendencyS, so I have to use
2881       gPtr(of the surface layer) instead
2882    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2883    checkpoint50e_pre
2884    
2885    checkpoint50d_post
2886    o change kpp output from multiple-record state files to single-record state
2887      files analogous to write_state.F
2888    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2889      analogous to the cg2d-related output.
2890    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2891      so that writing to internal file fn (with length 512) fails.
2892    checkpoint50d_pre
2893    
2894    checkpoint50c_post
2895    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2896    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2897    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2898    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2899    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2900    
2901    checkpoint50c_pre
2902    Merging from release1_p13:
2903    o bug fix for pkg/seaice dynamic solver
2904    o Added SEAICE_initialHEFF to pkg/seaice
2905    
2906    checkpoint50b_post
2907    o store u*,v* in gU,V instead of in guNm1,gvNm1
2908    o in order to put the momForcing out of the Adams-Bashforth:
2909      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2910      to timestep.F
2911    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2912    o re-generate output for highly sensitive test-exp:
2913       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2914    
2915    checkpoint50b_pre
2916    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2917    o corrected CPP option mismatch in exf_Bulk... functions for case
2918      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2919    
2920    checkpoint50a_post
2921    o Bug fix for merging between c50 and KPP.
2922      ikey was passed from thermodynamics to kpp_calc via
2923      common block rather than being recomputed in kpp_calc,
2924      in contradiction with new key itdkey.
2925      New key ikppkey created, and tamc.h headers updated.
2926    
2927    checkpoint50
2928    - 2nd step of merge with ecco-branch:
2929      merge changes in ecco-branch back into main trunk
2930    - bug fix in find_alpha
2931    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2932    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2933    - merged some sliced AD support routines
2934    
2935    checkpoint49
2936    merged from ecco-branch:
2937    o exf:
2938      - Enable initialisation of forcing fields to constant
2939        (runtime) values.
2940      - in exf_getffields.F
2941        Reduce i-/j-loop to interior domain, discarding overlaps.
2942        That also fixes wrong TAF-key computations for key_1, key_2
2943        with bulf formulae.
2944      - exf_init.F modify #ifdef for exf_init_evap
2945      - exf_getffieldrec.F, ctrl_getrec.F
2946        The following INT-usages are not safe:
2947          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2948          fldcount = int(fldsecs/fldperiod) + 1
2949        and were modified.
2950    o autodiff: checkpoint_lev...
2951      - updated storing for bulk formulae (some arrays were missing)
2952      - added state for seaice package
2953      - synchronized with main branch
2954    o DIVA:
2955      Modif.s in
2956      - the_main_loop.F
2957      - the_model_main.F
2958      and added cost_final_restore.F cost_final_store.F
2959      o With these changes, it is possible to fully separate
2960        the first forward run to compute the cost function (mdthe_main_loop)
2961        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2962        into separate model executions.
2963        This enables better tuning of DIVA to given queue sizes.
2964      o Loss of cost function value in consecutive DIVA runs is
2965        fixed by storing to 'costfinal' file.
2966      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2967        beginning/end of adjoint integration is accounted for.
2968      The current changes apply to TAF-1.4.26.
2969      TAF has one remaining bug, requiring one manual change
2970      (see MITgcm manual).
2971    o cal: synchronized between MAIN and ecco-branch
2972    
2973    checkpoint48i_post
2974    o Changes to restore differentiability of code w.r.t. previous tag
2975      (mostly adding new routines to make list and replacing
2976      pressure by totPhiHyd).
2977    o Updated and merged grdchk package
2978      - has both ADM and TLM checks
2979      - works for single- and multi-proc.
2980      - output cleaned
2981      - worked successfully for parallel DIVA
2982    o genmake:
2983      - Adding -platform=SP4
2984      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2985    o Modif. for DIVA:
2986      ctrl_unpack should not be called in intermediate DIVA interval.
2987      (similar thing would apply for active files such as
2988      tbar, sbar, psbar, which should not be reinitialised;
2989      only relevant for ecco-branch)
2990    
2991    checkpoint48h_post
2992    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2993    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2994    o Added SEAICE_initialHEFF to pkg/seaice
2995    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2996    
2997    checkpoint48g_post
2998    --- EOS:
2999    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3000      store total Potential in totPhyHyd for diagnostics & EOS.
3001    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3002    --- Pressure/geopotential gradient:
3003    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3004    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3005      ( changes results of global_ocean_pressure )
3006    o NLFS + z-coord.: add eta*Rho' contribution.
3007    o accurate phiHyd when using interface-W at the middle between 2 centers
3008     ( changes results of ideal_2D_oce )
3009    o includes r* 2nd term in potential gradient.
3010    
3011    checkpoint48f_post
3012    Merging from release1_p12:
3013    o Modifications for using pkg/exf with pkg/seaice
3014      - improved description of the various forcing configurations
3015      - added basic radiation bulk formulae to pkg/exf
3016      - units/sign fix for evap computation in exf_getffields.F
3017      - updated verification/global_with_exf/results/output.txt
3018    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3019      (SBO) core products, including oceanic mass, center-of-mass,
3020      angular, and bottom pressure (see pkg/sbo/README.sbo).
3021    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3022      to avoid negative values in shallow regions.
3023      - updated verification/natl_box/results/output.txt
3024      - updated verification/lab_sea/results/output.txt
3025    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3026    o Added useSingleCpuIO option (see PARAMS.h).
3027    o Updated useSingleCpuIO option in mdsio_writefield.F to
3028      work with multi-field files, e.g., for single-file pickup.
3029    o pkg/seaice:
3030      - bug fix in growth.F: QNET for no shortwave case
3031      - added HeffFile for specifying initial sea-ice thickness
3032      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3033    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3034      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3035    o pkg/seaice:
3036      - adjoint-friendly modifications
3037      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3038    
3039    checkpoint48e_post
3040    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3041    o dynamics: change definition of computational domain & adapt mom_fluxform
3042      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3043    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3044        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3045        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3046        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3047        inverted_barometer solid-body.cs-32x32x1
3048      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3049    
3050    checkpoint48d_post
3051    o in preparation for r*:
3052     a) use pre-computed gradient of hydrostatic potential:
3053        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3054     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3055        => affects results of glob_oce_pressure (different truncation error)  
3056      update output.txt of ideal_2D_oce & global_ocean_pressure
3057    
3058    checkpoint48d_pre
3059    o in preparation for r*:
3060      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3061      pass the 2 comp. of the grad. as arguments to momentum S/R.
3062      but for the moment, only used if it does not change the results.
3063    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3064    
3065    checkpoint48c_post
3066    Modifications in treatment of initial flux forcing controls
3067    to avoid extra storing of flux fields.
3068    
3069    checkpoint48c_pre
3070    o Added tidal_basin_2d experiment (currently 1D!)
3071    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3072    
3073    checkpoint48b_post
3074    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3075     (modification to pressure gradient not yet implemented)
3076    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3077      (for U & V) that are used for vertical advection of momentum.
3078    
3079    checkpoint48a_post
3080    o In preparation for r*, use temp. array to compute vertical transport
3081       in flux-form momentum pkg. => change results of few test-exp.
3082      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3083                        lab_sea, natl_box & plume_on_slope
3084    
3085    checkpoint48
3086    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3087    
3088    checkpoint47j_post
3089    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3090    o moved adexch from forward_step to addummy_in_stepping
3091    o added exch in ctrl_map_...
3092    o aveFreq.=0. at end of cost_final to avoid overwrite in
3093      reverse checkpointing loop
3094    o Yet more changes in gmredi:
3095      * adgmredi_calc_tensor
3096        avoiding all recomputation of gmredi_slope_limit
3097      * adgmredi_x/y/rtransport
3098        added flag for excessive storing to avoid recomp. of
3099        u/v/rtans, dTdx/y/z
3100        -> this is not really necessary and very memory-consuming
3101      * adgmredi_slope_psi:
3102        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3103      * gmredi_slope_limit
3104        re-activated full calculation of taperfct for case 'ac02'
3105    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3106    
3107    checkpoint47i_post
3108    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3109    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3110      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3111    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3112    o gmredi: fix few bugs.
3113    
3114    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3115    This will be a good checkpoint to plug into the ecco-branch.
3116    o few modif.'s to get latest version adjointed
3117      (mainly kick out code in ini_linear_phisurf)
3118    o modif's to run adjoint with exactConserv
3119    o case GM_BOLUS_ADVEC should be cleaned
3120      S/R gmredi_slope_psi should be cleaned
3121    o verification/carbon now has exactConserv=.TRUE.
3122    
3123    checkpoint47g_post
3124    o time-average AIM output: becomes independent from statvars time-average
3125      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3126    o After TAF bug fix:
3127      Tested adjoint of gmredi package.
3128      Tests were done with checkpoint47 rather than with latest
3129      checkpoint47f_post since the latter is broken for the adjoint
3130      verification/carbon/ contains both ADM and TLM gradient checks.
3131    Here they are, before they get changed/lost/stolen.
3132    Mostly modif.'s to fix numerical sensitivities.
3133    Gradient checks OK for
3134    - GM_taper_scheme:
3135      * clipping
3136      * ac02
3137      * linear
3138      * glw91
3139      * dm95
3140      * ldd97
3141    - GMREDI_OPTIONS:
3142      * GM_VISBECK_VARIABLE_K
3143      * GM_NON_UNITY_DIAGONAL
3144      * GM_EXTRA_DIAGONAL
3145      * GM_BOLUS_ADVEC
3146    in conjunction with data.gmredi parameters to be checked in
3147    in a few minutes under verification/carbon/code/
3148    
3149    checkpoint47f_post
3150    Merging from release1_p10:
3151    o modifications for using pkg/exf with pkg/seaice
3152      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3153        and SEAICE_EXTERNAL_FLUXES
3154      - pkg/exf CPP options EXF_READ_EVAP and
3155        EXF_NO_BULK_COMPUTATIONS
3156      - usage examples are Experiments 8 and 9 in
3157        verification/lab_sea/README
3158      - verification/lab_sea default experiment now uses
3159        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3160    
3161    checkpoint47e_post
3162    o created a tag prior to creating a branch
3163    
3164    checkpoint47d_post
3165    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3166      at the bottom boundary had an erroneous half slip boundary condition
3167    o added bottom drag and no slip boundary condition capabilities to
3168      oceanic pressure coordinates code
3169    o added new verification experiment global_ocean_pressure, this experiment is
3170      also described in the tutorial section of the manual
3171    checkpoint47d_pre
3172    
3173    checkpoint47c_post
3174    o Added a verification experiment for a global cubed-sphere ocean run
3175      -  verification/global_ocean.cubed32x32x30
3176      -  uses pkg/therm_seaice and pkg/bulk_forcing
3177    
3178    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3179    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3180      when using P-coordinate; only implemented for atmospheric config.
3181    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3182      NOTES: requires option NONLIN_FRSURF to be "#define".
3183    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3184    
3185    checkpoint47b_post
3186    Merging from release1_p9:
3187    o pkg/seaice
3188      - removed GOTO's and added taf directives
3189      - double precision constants to reduce the g77 (Linux)
3190        to F77 (SGI) differences reported in release1_p8
3191    o tools/genmake
3192      - added SGI options
3193    o verification/testscript
3194      - updated to that of checkpoint47a_post
3195    o verification/global_ocean.90x40x15/input/eedata
3196      - modified for SGI f77 compatibility
3197    o verification/lab_sea
3198      - added description of sea-ice model
3199      - added missing matlab routines
3200      - added test of thermodynamics parallelization
3201    
3202    checkpoint47a_post
3203    o new pkg: aim_v23
3204     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3205       for now, keep the same surface forcing as before.
3206     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3207     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3208     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3209    o add diagnostic of surface correction term in monitor output
3210    
3211    o bulk_force and therm_seaice
3212    - Two packages:  bulk_force (Bulk forcing)
3213      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3214    - Earlier integration from Stephaine Dutkiewicz
3215      and Patrick Heimbach.
3216    - Two ifdef statements for compile time,
3217       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3218    
3219    checkpoint47
3220    differentiable version of checkpoint46n_post
3221    o bug fix in quasihydrostaticterms
3222    o * "clean" adjoint code (in terms of extensive recomputations)
3223        can now be obtained for all GMREDI options (i.e. for
3224        - GM_VISBECK_VARIABLE_K
3225        - GM_NON_UNITY_DIAGONAL
3226        - GM_EXTRA_DIAGONAL
3227        - GM_BOLUS_ADVEC )
3228      * However, wrong gradient check problem remains unsolved.
3229      * New CPP options have been introduced for different
3230        tapering schemes
3231    o external_fields_load now part of differentiation list
3232    o pressure needs multiple storing;
3233      would be nice to have store_pressure at beginning or
3234      end of forward_step, e.g. by having phiHyd global (5-dim.)
3235      (NB: pressure is needed for certain cases in find_rho,
3236      which is also invoked through convective_adjustment).
3237    o recomputations in find_rho for cases
3238     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3239    o #define ATMOSPHERIC_LOADING should be differentiable
3240    o ini_forcing shifted to begining of initialise_varia
3241    o Incorporating QNVS line search routines into MITgcm
3242      (this is separate code, and therefore not under pkg)
3243      lsopt/, optim/
3244    o Updated verification/carbon/
3245      - #define GM_VISBECK_VARIABLE_K
3246      - GM_taper_scheme    = 'ldd97'    
3247    
3248    checkpoint46n_post
3249    Merging from release1_p8:
3250    o verification/natl_box:
3251      updating new external_fields_load routine
3252    o New package: pkg/seaice
3253      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3254      The sea-ice code is based on Hibler (1979-1980).
3255      Two sea-ice dynamic solvers, ADI and LSR, are included.
3256      In addition to computing prognostic sea-ice variables and diagnosing
3257      the forcing/external data fields that drive the ocean model,
3258      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3259      The implied surface heat flux is then stored in variable
3260      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3261      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3262      non-local transport term.  Because this call precedes model
3263      thermodynamics, temperature under sea-ice may not be "exactly" at
3264      the freezing point by the time theta is dumped or time-averaged.
3265      N.B.: fairly large differences in accuracy occur across
3266            different platforms/compilers; comparison between
3267            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3268            generated output gives:
3269       T           S           U           V
3270      C D M    c        m  s        m  s        m  s        m  s
3271      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3272      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3273      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3274    
3275      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3276    o GAD:
3277      - generated new common blocks to account for call of
3278        same gad routines with differing traceridentities
3279        (needed to modify tracerIdentity indices in GAD.h)
3280      - generated separate common blocks for case useCubedSphereExchange
3281        (Department of Futurology)
3282      - parameter lists to gmredi_?transport: added tracerIdentity
3283      - added new key indices to tamc.h
3284    o external_fields_load:
3285      - added this routine to TAF list
3286      - needed to make some common blocks global and additional storing
3287        along the same lines as exf package (checkpoint_lev?_directives.h)
3288    o exf:
3289      updated external forcing package
3290      - bug fixes carried over from ecco-branch
3291        (missing OBCS_OPTIONS.h in two routines)
3292      - enable easy to use "no forcing".
3293      - added exf I/O for atmospheric loading
3294      - added exf I/O for runoff data
3295      - transfered scaling between exf <-> MITgcm to exf namelist
3296    o Adding new verification experiment global_with_exf.
3297      This verification experiment is almost identical to the
3298      global_ocean.90x40x15 experiment, except that it uses
3299      the exf (and cal) package instead of the
3300      external_fields_load routine (cf README file).
3301    
3302    checkpoint46m_post
3303    o modified testscript to return -- when there are no lines of "%MON" output
3304    o added new flag "quasiHydrostatic" for QH mode
3305      and new routine quasihydrostaticterms()
3306    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3307      New routine: mom_u_coriolis_nh()
3308    o fixed sign of non-hydrostatic metric terms in u and v equations.
3309      Depend on correct sign of gravitySign.
3310    o added work.pc* to .cvsignore in aim directories using ifc
3311    o introduced flag for controllin non-hydrostatic metric terms
3312    o removed gravitySign from PARM04
3313    o switched to g77/ifc from pgf77 in aim experiments
3314    
3315    checkpoint46l_post
3316    o made convective adjustment work with pressure coordinates:
3317     - changed the direction of k-loop in convective_adjustment.F for the
3318       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3319     - adjusted the reference pressure k-index in convective_adjustment.F
3320     - adjusted the convection condition in convect.F (in analogy to
3321       calc_ivdc.F)
3322     - convective_adjustment no longer computes anything on the halos
3323     - removed the warnings about negative salinity from find_rho.F and
3324       find_alpha.F; instead the new routine look_for_neg_salinity, called
3325       at the beginning of find_rho, find_alpha, and find_beta, does a
3326       check of the entire slice, if CPP-option
3327       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3328    checkpoint46l_pre
3329    
3330    checkpoint46k_post
3331    o fixed the verification/global_ocean.90x40x15 experiment:
3332     - new bathymetry (the world according to A., JMC, and M.)
3333     - new initial fields and forcing fields (*.bin files)
3334     - new POLY3.COEFFS (for the next release one should switch to a full
3335       equation of state: JMD95P or MDJWF)
3336     - fixed several errors and redundancies in the data file
3337     - experiment uses looped cells
3338     - added matlab directory with diagnostic scripts for plotting of output
3339    
3340    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3341     - read AIM physics parameters from a file (data.aimphys)
3342     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3343    
3344    checkpoint46j_post
3345    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3346    o move wVel computation at the end of the time step, in S/R integr_continuity
3347    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3348    o update timeave pkg for wVel diagnostic.
3349    checkpoint46j_pre
3350    
3351    checkpoint46i_post
3352    o Clean up AIM package (and keep the results unchanged):
3353      include CPP_OPTION and use IMPLICT NONE in all routines ;
3354      declare all the variables _RL ; use _d 0 for all numerical constants.
3355      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3356    
3357    checkpoint46h_post
3358    o cleaned up the use of rhoNil and rhoConst.
3359      - rhoNil should only appear in the LINEAR equation of state, everywhere
3360        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3361        and the dynamical equations are all divided by rhoConst
3362    o introduced new parameter rhoConstFresh, a reference density of fresh
3363      water, to remove the fresh water flux's dependence on rhoNil. The default
3364      value is 999.8 kg/m^3
3365    o cleanup up external_forcing.F and external_forcing_surf.F
3366      - can now be used by both OCEANIC and OCEANICP
3367    checkpoint46h_pre
3368    
3369     Added code to convert surface volume flux (fresh water) into
3370     a mass flux when using P coordinates in the ocean (OCEANICP).
3371     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3372    
3373    checkpoint46g_post
3374    o Include a new diagnostic variable phiHydLow for the ocean model
3375      - in z-coordinates, it is the bottom pressure anomaly
3376      - in p-coordinates, it is the sea surface elevation
3377      - in both cases, these variable have global drift, reflecting the mass
3378        drift in z-coordinates and the volume drift in p-coordinates
3379      - included time averaging for phiHydLow, be aware of the drift!
3380    o depth-dependent computation of Bo_surf for pressure coordinates
3381      in the ocean (buoyancyRelation='OCEANICP')
3382      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3383        Theta, Salinity, and Pressure in the parameter list. This routine is
3384        presently contained in find_rho.F. This routine does not give the
3385        correct density for 'POLY3', which would be a z-dependent reference
3386        density.
3387    o cleaned up find_rho
3388      - removed obsolete 'eqn' from the parameter list.
3389    o added two new verification experiments: gop and goz
3390      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3391    checkpoint46g_pre
3392    
3393    checkpoint46f_post
3394    o Enable tangent linear (forward mode) gradient checks:
3395      - extended active file handling to g_... files
3396      - added TANGENT_SIMULATION to theSimulationMode
3397      - extended grdchk package accordingly
3398    o added tangent linear setup in verification/carbon/code_ftl
3399    o added adjoint setup in verification/front_relax/code_ad
3400    
3401    checkpoint46e_post
3402    o Added new equation of state -> MDJWF
3403      - EOS of McDougall et al., 2002, JAOT, submitted
3404      - caveat: the equation of state is only valid for a smaller (more
3405        realistic?) range of values than JMD95P/Z and UNESCO
3406      - added masks to the calculation of pressure in store_pressure
3407      - added more check values for density in check_eos (ini_eos.F), some of
3408        the old check values are out of the range of the MDJWF-eos, so don't
3409        expect perfect matches for those
3410    checkpoint46e_pre
3411    
3412    checkpoint46d_post
3413    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3414      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3415      case of pressure coordinates. eosType='JMD95Z' in
3416      combination with buoyancyRelation='OCEANICP' now causes an error.
3417    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3418      in find_alpha/beta.
3419    checkpoint46d_pre
3420    
3421    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3422      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3423    
3424    checkpoint46c_post
3425    o Changes necessary for ocean in p-coordinates
3426     -  Added new buoyancy relation = 'OCEANICP'
3427     -  Added new parameters = gravitySign (this used to be contained inside
3428        the factor dRdZ which I added when we first switched to R coordinates).
3429     X GM/Redi is not compatible (yet)
3430     X bottom drag and no-slip need to be debugged.
3431    checkpoint46c_pre
3432    
3433    checkpoint46b_post
3434    o Added new equation of state -> JMD95Z and JMD95P
3435      - EOS of Jackett and McDougall, 1995, JAOT
3436      - moved all EOS parameters into EOS.h
3437      - new routines ini_eos.F, store_pressure.F
3438    o Added UNESCO EOS, but not recommended because it requires
3439      in-situ temperature (see JMD95)
3440    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3441      unesco.f to be used with POLY3
3442    checkpoint46b_pre
3443    
3444    checkpoint46a_post
3445    o Added (atmospheric) pressure loading
3446      - new field in FFIELDS.h, etc...
3447      - new cpp flag ATMOSPHERIC_LOADING
3448    o Changed hFacC to _hFacC in calc_phi_hyd.F
3449    o Added SHORTWAVE_HEATING to some files for consistency
3450    checkpoint46a_pre
3451    
3452    checkpoint46
3453    further merges from release1_p5
3454    o new ctrl package
3455      - adopted from ECCO environment to enable optimization
3456      - added Eliassen Palm fluxes to controls
3457    o added Eliassen Palm flux controls to gradient check package
3458    o cost package
3459      - Compatible with new ctrl package
3460      - added Eliassen Palm cost hooks
3461      - modif's of existing cost functions
3462    o Adjoint-related bug fixes in kpp:
3463      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3464      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3465    o autodiff package
3466      - flow directives:
3467        + new for S/R do_the_model_io
3468        + enhanced for S/R checkpoint
3469        + new gmredi.flow
3470      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3471        disable adcommon.h/g_common.h by default.
3472      - fixed problem for adjoint of global_max
3473    o modified verification/carbon/
3474    o New setup for adjoint of global_ocean
3475    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3476    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3477    o incorporated hooks for sponge layer code (external_forcing.F)
3478    
3479    checkpoint45d_post
3480    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3481    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3482      (affects plume_on_slope "cg2d" output)
3483    o add new parameter deltaTfreesurf for free-surface time stepping
3484    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3485    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3486    o change phiMin in exp1 (to agree with documentation)
3487    o add new flags:
3488     - T,S forcing inside/outside Adams-Bashforth
3489     - turn off temp,salt advection and/or forcing
3490     - for each tracer, define internal flag for multiDimAdvection & A-B
3491    o monitor: change definition of KE to check conservation of Energy
3492    
3493    checkpoint45c_post
3494    o Removed f90 comments ("!")
3495    o Modified initialisations to enable exf package for MITgcm
3496      (without invoking ECCO_PACKAGE).
3497    o modifications to gradient check package (Martin Losch)
3498      - enable centered differences
3499      - modified format of standard output
3500    
3501    checkpoint45b_post
3502    o cleaned exchange calls in cg2d
3503    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3504    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3505      to configure barotropic setup (Martin Losch)
3506    o moved some initialisations within bi,bj loop in dynamics
3507      (TAF flow dependency)
3508    o in initialise_varia, moved call packages_init_variables
3509      before convective_adjustment_init
3510      (corresponding adjustment of TAF tape initialisation).
3511    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3512    
3513    checkpoint45a_post
3514    o compute Rho over the whole domain (extend iMin,jMin indices)
3515    o specific exchange for X-slice domain (case Ny=1)
3516    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3517    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3518    
3519    checkpoint44h_post = checkpoint45
3520    o Fix to restore differentiability:
3521      place at which packages_init_variables is called in
3522      initialise_varia is crucial for reverse control flow.
3523    o modifications in GMRedi to enable stable adjoint
3524      (corresponding modif's in thermodynamics, dynamics)
3525    o added missing hook for sponge layer code in external_forcing
3526    o modified test cost functions
3527    o storing in gad_advection (plus removal of write(0,*)!
3528    o missing headers TR1.h added in convective_adjustment routines
3529    o errorMessageUnit set non-equal zero in eeboot
3530      (conflict on some platforms, e.g. IBM SP3)
3531    o modified carbon verif.
3532    
3533    checkpoint44h_pre
3534    o vertical grid option: allow to put the Interface at the middle between
3535      2 cell-centers ; replace delZ in pkg/kpp by drF.
3536    o GM Advective form: Tracers are advected using the residual transport (=
3537      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3538    
3539    checkpoint44g_post
3540    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3541      results) ; ifdef missing in thermodynamics.F
3542    
3543    checkpoint44f_pre,checkpoint44f_post
3544    o added PTRACERS package
3545      This allows an arbitrary number of passive tracers to be integrated
3546      forward simultaneously with the dynamicaly model.
3547      + Implemented so far:
3548        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3549        - I/O and checkpointing
3550        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3551      + Not implemented so far:
3552        - KPP
3553        - OBCS
3554      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3555        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3556        line in data.pkg.
3557      + This package is disabled by default since it increases storage.
3558    
3559    
3560    o testscript: added -cleanup option
3561    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3562                 b) enable to filter 2D fields.
3563    
3564    checkpoint44e_pre,post
3565    o re-wrote convective adjustment to use pre-calculated weights
3566      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3567      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3568      Original calls to convect() still in place.
3569    
3570    chkpt44d_pre,post
3571    o added missing EXCLUDE_MONITOR flags
3572    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3573      (incompatible typ in MIN/MAX expressions caused problems
3574      on IBM SP3)
3575    o in genmake added variable MAKEDEPEND
3576      plus resetting for case SunOS
3577    o added timer_stats.c routine for IBM SP3
3578    o removed variables in dynamics
3579    !!! I forgot to create tag chkpt44d_pre !!!
3580    !!! But chkpt44d_pre = chkpt44c_post    !!!
3581    
3582    o real fresh water flux implemented with non-linear free-surface.
3583    
3584    chkpt44c_pre,post
3585    o few fix (mask in shap_s2, EmPmR in external_field_load,
3586      USE_NATURAL_BCS in solve_for_P);
3587    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3588    
3589    checkpoint44b_pre/_post
3590    o merge of relevant stuff from the ecco-branch:
3591      - genmake: removed $S64 overwrite for case SunOS
3592      - pkg/exf: update and corrections for field swapping and obcs
3593      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3594                  harmonized between ECCO and MITgcm
3595      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3596                      updated checkpointing_lev... lists for obcs
3597      - model/src: minor changes in forward_step, plot_field
3598                   added directive for divided adjoint in the_main_loop
3599      - pkg/mdsio: added mdsio_gl_slice
3600    
3601    o check parameters & config (chkpt44a_pre,post)
3602    o OBC and NonLin_FrSurf.
3603    
3604    checkpoint44
3605    o fix bug in mom_vi_del2uv
3606    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3607    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3608    o update AIM experiments (NCEP input files)
3609    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3610    o added some stuff for AD
3611    
3612    checkpoint43
3613    o added two new advection tests
3614    o added global 4x4 degree ocean test
3615    o added test of H&S94 with free surface on cube
3616    o some final mods for gradient check, adjoint,...
3617    
3618    checkpoint42
3619      Fixed AD-related problems:
3620    o Store directives up-to-date with re-arranged Adams-Bashforth
3621      (mainly thermodynamics.F)
3622    o New store directives for multi-dim. advection schemes
3623      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3624      * new common block and key passkey
3625      (mainly gad_advection.F)
3626    o Modified store directives for split of dynamics/thermodynamics
3627      for the case ALLOW_KPP
3628    o Cleaned argument list for timestep_tracer.F
3629    
3630    checkpoint41
3631    o re-formatted/added comments in prologues of key subroutines
3632      to work with protex
3633    
3634    checkpoint40
3635    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3636    o added FLT (floats) package from Arne along with demo. experiment
3637    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3638      implementation of forward-in-time forcing terms
3639    o more mods for non-linear free-surface including new variable
3640    o modified multi-dim method to work on cube
3641    o bug fix in KPP (from DM)
3642    
3643    checkpoint40pre9
3644    o added DST advection schemes
3645    o fix MPI bug on SGI's
3646    o modifications for non-linear free-surface
3647    o fixed conditionals for fixed flow/passive tracer only mode
3648    o added tension/strain form of stress tensor
3649    o changes to commenting of arguments for TAF/TAMC
3650    o added/updated many matlab scripts
3651    o added multi-dimensional advection method for tracers
3652      
3653    checkpoint40pre8
3654    o new package rw/
3655      Added method for dumping intermediate local arrays:
3656      mdsio_writetile - same as mdsio_writefield except works from inside
3657                        bi,bj loop
3658      mdsio_writelocal - same as mdsio_writetile except works for local
3659                         arrays
3660      write_local_r? - higher-level wrapper for mdsio_writelocal
3661      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3662      Example given at end of mom_vecinv.F that dumps some local arrays.
3663    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3664      control flux-form versus vector invariant code.
3665      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3666      or genmake -DISABLE ...
3667    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3668      (additional storing is now needed for case vecinv;
3669      currently nothing implemented to switch this storing off
3670      in case fluxform is used since no CPP flag available).
3671    
3672    checkpoint40pre7
3673    o bug fix in dynamics.F
3674      calc_viscosity called before k=1,Nr loop.
3675    o added some #ifdef's ALLOW_PASSIVE_TRACER
3676    o cleaned initialisations in ctrl_map_ini
3677      related to TAF
3678    
3679    checkpoint40pre6
3680    o split dynamics into thermodynamics & dynamics
3681    o corresponding split of calc_diffusivity into
3682      calc_diffusivity, calc_viscosity
3683      (kpp_calc_diff, kpp_calc_visc).
3684    o Added diffkr, kapgm to control variables
3685    o bug fix in gmredi_slope_limit for ldd97
3686    
3687    checkpoint40pre5
3688    o proper initialization of Adams-Bashforth time stepping
3689      + uses forward step for very first step of model (iter=0)
3690    o re-generated *all* output since almost all output is modified by this
3691      change (sorry but we've been putting this one off for about 2 years)
3692      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3693        *not* regenerated since they are already out of date and I don't
3694        want to create the impression that they are suddenly working.
3695    o removed KAP stuff for DEC's
3696    o modified/added many .cvsignore files in */code and */input
3697    o added new expt "solid-body.cs-32x32x1"
3698      + this uses an alternative form of ini_curvilinear_grid.F which
3699        is not necessarily any better than the current one...
3700    
3701    checkpoint40pre4
3702    o added re-initialisations of utrans,vtrans,rtrans in
3703      calc_common_factors which are crucial for TAF.
3704    o extended iMin,jMin range for calc_common_factors,
3705      calc_diffusivity
3706    o added option ALLOW_PASSIVE_TRACER
3707    o a few minor updates and fixes
3708    
3709    checkpoint40pre3
3710    o created calc_gtr1.F for gad package
3711    o split the_main_loop and re-introduced forward_step
3712    o some recomputations of nIter0 for TAMC
3713    
3714    checkpoint40pre2
3715    o Updated to latest branch of AJA, JMC
3716    o Added gradient check package
3717    o Added routines for passive tracer handling
3718    o Added carbon sequestration sensitivity experiment
3719    
3720    checkpoint39
3721     o Modifications and fixes to support TAMC
3722       (mainly missing or wrong directives)
3723     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3724       in addummy_in_stepping
3725     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3726     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3727     o Included following packages:
3728       cal: calendar
3729       exf: external forcing
3730       ecco: essential routines to control use of cal, exf
3731             (NB: this is not the full ECCO environment)
3732     o disabled some packages by default in genmake
3733    
3734    checkpoint38
3735     o see notes_c37_adj.txt
3736     o corrected wrong layer index in external_forcing_t
3737     o replaced the_main_loop/forward_step by the_main_loop
3738     o removed forceoutput from write_state
3739       (replaced criteria for initial/final state)
3740     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3741    
3742    checkpoint37
3743     o mdsio.F routine split and packaged in pkg/mdsio
3744       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3745        used unless genmake -disable=mdsio)
3746     o allow a more precise surface-geopotential gradient for the atmosphere
3747       taking into account the change in space of Alpha (=1/rho) at the surface.
3748     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3749       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3750     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3751       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3752       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3753     o Time-Average diagnostics defined as a pseudo package "timeave".
3754     o pickup files : old pickup (before c35) did not work with new code (c35
3755       and after) unless activating 2 commented lines in initialise-varia.
3756     o Non-Hydrostatic pickup file Pb fixed.
3757     o bug with Rigid-lid version (since c35) fixed.  
3758    
3759    checkpoint36
3760     o implement Crank-Nickelson barotropic time-stepping
3761     o recover Time-Average diagnostics
3762     o fix Pb in checkpoint (PR#19)
3763     o AIM become a standard package ; clean unused CPP_kees
3764    
3765    checkpoint35
3766     o subtantial rewrite of dynamics.f
3767     o allows staggered time-stepping
3768     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3769     o added bottom drag (linear + quadratic)
3770    
3771    checkpoint34
3772     o Modified exchange routines for correct reverse simulation.
3773     o Added verification output to comply with bug fix in impldiff.F
3774       as of c33 (exp2, natl_box).
3775     o Corrected store directives in dynamics.F
3776     o Corrected array boundaries in impldiff.F
3777     o Corrected array dimensions in gmredi.
3778       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3779     o Added routine GLOBAL_SUM_INT to global_sum.F
3780     o Added mdsio_gl.F for ECCO purposes.
3781    
3782    checkpoint33
3783     o Fixed bug in lower BC in impldiff.F
3784     o Fixed confusion about units of forcing arrays in FFIELDS.h
3785       namely Fu,Fv,Qnet,Qsw,EmPmR:
3786       - Removed verification/natl_box/code/external_fields_scale.F
3787         (did not differ from that in model/src)
3788       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
3789         (see FFIELDS.h for description)
3790       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
3791         kpp_calc.F and kpp_transport_t.F
3792       - Removed model/src/external_fields_scale.F and calls to it
3793       - verification/natl_box uses flux data with "atmospheric" sign so
3794         a special version of external_fields_load.F is used to
3795         change the data as it's read in. This way, the arrays
3796         have the right units and signs at all times tha a user could
3797         possibly use them.
3798     o Corrected genmake to delete a temporary file during configuration
3799    
3800    checkpoint32
3801     o Scaling of forcing fields moved from external_forcing.F to
3802       external_fields_scale.F, called directly after loading fields.
3803     o Surface relaxation terms added to surface tendency fields in
3804       extra subroutine.
3805     o impldiff.F changed to avoid storing by TAMC of huge intermediate
3806       fields.
3807     o Changes in GMRedi to comply with packaging structure.
3808     o Modifications and bug fixes in KPP package.
3809     o Verification experiment for KPP added (verification/nat_box/)
3810    
3811    checkpoint31
3812     o Packages interface brought in line with defined standard
3813       -> new routines packages_...F
3814       -> changes in initialise_fixed.F, initialise_varia.F
3815       -> enables initialisation interface for ECCO package
3816     o Rescaling of external forcing fields immediately after read
3817       (removed from external_forcing.F)
3818       -> new: surface_fields_scale.F
3819       -> affects ini_foorcing.F, external_fields_load.F
3820     o Computation of surface tendencies before tendency updates.
3821       -> new: external_forcing_surf.F
3822     o Change of variable names useGMRedi, useKPP, useECCO
3823     o Further changes in dynamics.F, impldiff.F for TAMC
3824     o Tested for experiments 0, 2, 4.
3825       - not yet tested for GMRedi.
3826       - not yet tested for KPP.
3827    
3828    checkpoint30
3829     o Updates for OBCs
3830     o New experiment for test OBCs (internal_wave)
3831     o New output.txt in verification/exp4/results/
3832     o Updates for KPP: calculation of viscosity corrected, new variables
3833       kpp_dumpFreq and kpp_taveFreq
3834     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
3835       and entry for T90 in genmake
3836    
3837    checkpoint29
3838     o packaged KPP and GM/Redi
3839    
3840    checkpoint28
3841     o Corrected initialization of hFacMin for difference vertical coordinates
3842     o Modified calculation of partial cell thickness to more robust algorithm
3843     o config_summary.F: replaced write_1D_... by write_0D_...
3844       read_write.F: added subroutines write_0D_...
3845     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
3846       included some initialisations required for TAMC.
3847     o routine calc_isoslopes: modified sqrt computation to make it
3848       differentiable for zero argument.
3849     o routines dynamics, impldiff:
3850       included store directives and tape key computations required for TAMC.
3851     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
3852    
3853  checkpoint27  checkpoint27
3854   o fixed calc_isoslopes() to so that cancellation of terms in tensor   o fixed calc_isoslopes() to so that cancellation of terms in tensor
3855     formulation works properly with variable resolution.     formulation works properly with variable resolution.

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