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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.1004 by heimbach, Thu Jun 19 16:43:56 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  o adding precip control xx_precip  checkpoint60
8  o moved ptracer ctrl index 17 -> 32  --->>> 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:  o in natl_box_adjoint:
1567    * updated: results_bulk/    * updated exp 1 to 10
1568    * not yet updated: results/, results_seaice/      (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  checkpoint57m_post
1576  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)

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