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revision 1.47 by heimbach, Tue Aug 21 16:38:41 2001 UTC revision 1.1003 by jmc, Mon Jun 16 14:08:55 2008 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
8    o pkg/grdchk: Add gradient check to etan0 perturbations.
9    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
10    o pkg/autodiff: more flexibility in zeroadj.
11      model/src: modifying do_oceanic_phys.F accordingly.
12    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
13    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
14      special setup of gmredi for which the adjoint is stable
15      enough for parameter optimization.
16    o bridging the gap between eddy stress and GM.
17      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
18          along with a change in CPP option (now ALLOW_EDDYPSI).
19      -> when using GM w/ GM_AdvForm:
20          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
21          is applied either in the tracer Eq. or in momentum Eq.
22          depending on data.gmredi (intro. GM_InMomAsStress).
23      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
24      The key modifications are in model/src/taueddy_external_forcing.F
25      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
26    
27    checkpoint59r
28    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
29      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
30      fix option to read coriolis(@ cell-corner) from files with CS-grid.
31    o pkg/mnc: add some attributes to standard 1D-coordinate variables
32    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
33      mass points, when using mnc for output
34      - add runtime parameter (missing_value, missing_value_int) to override
35        default (which is the value of getcon('UNDEF'))
36    o pkg/mnc: prepare mnc for the actual use of missing values with the
37      diagnostics package: small fix in mnc_cw_readwrite.template and more
38      initialisation of never used fields
39      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
40      versions
41    o pkg/thsice/thsice_ini_vars.F added default initial values so that
42      thermodynamics sea ice solver does not blow up when some initial fields
43      are missing.
44    o move from external_forcing_surf.F to ini_forcing.F
45      the p-coord. hack consisting in using pLoad to set phi0surf ;
46      update output of tutorial_global_oce_in_p (affected @ truncation level).
47    o Freshen up a bit hs94.1x64x5, notably:
48      remove rotationPeriod and tRef=5*0. (adjoint only), and add
49      exactConserv=.TRUE.
50    o pkg/generic_advdiff:
51      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
52      applies to files where Temperature & Salinity 2nd Order moments are used.
53    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
54      this uses a dynamically allocated internal state data structure
55      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
56      and requires a fortran 90 compiler
57    
58    checkpoint59q
59    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
60       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
61    o Refresh tutorial_global_oce_biogeo, notably:
62      - change bathymetry (put back seamounts in ACC, use hFacs)
63      - change EOS (POLY3 --> JMD95Z)
64      - use Bryan-Lewis vertical diffusivity
65      - use multidimensional advection
66      - remove old virtual virtual in dic pkg, now done through ptracer pkg
67      - change a couple of parameters in dic pkg
68    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
69    o pkg/obcs: change default to OBCSfixTopo = .true.,
70      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
71      - replace "debugMode" with "debugLevel .GE. debLevB"
72    o implementation of TAF directives for gchem,cfc,dic
73    o remove "exp5" (replaced by tutorial_deep_convection).
74    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
75      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
76      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
77      --> changes results in exp4, seaice_obcs
78    o tutorial_deep_convection :
79      update the set-up and increase resolution and domain size ; start
80      from pseudo initial conditions = output at t=120mn in order to see
81      something happening when running testreport.
82    o pkg/seaice: add os7mp as an advection scheme
83                  add check for advection schemes
84                  add a flag for restoring T and S underneath sea ice
85    o pkg/my82: add netcdf-support and diagnostics
86    o thsice pkg:
87      - Now hsMax limits snow height by turning it into ice following
88        flooding scheme (and now conserving energy)
89      - Slight rewriting of the formula in thsice_calc_thick.F
90      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
91      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
92    
93    checkpoint59p
94    o gchem / dic / cfc :
95      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
96      - add new parameter files: "data.dic" & "data.cfc" ;
97      - various re-arrangement in initialisation & header file ;
98      - fix tutorial_global_oce_biogeo for multi-threaded test.
99    o pkg/dic: test for "pickup_dic" file when restarting ;
100      if no pickup-file, can restart with a re-initialised pH (same as it did
101      before) providing pickupStrictlyMatch is set to False.
102    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
103      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
104    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
105      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
106    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
107     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
108       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
109    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
110       scheme to use for vorticty-term ;
111     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
112       (with default selectVortScheme, return to original discretisation)
113     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
114    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
115    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
116      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
117      also fix diagnostics VISCAHW & VISCA4W.
118    
119    checkpoint59o
120    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
121    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
122      move a few statemens out the main loop into separate loops
123    o pkg/shelfice:
124      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
125        (kg/m^2/s), does not break tests, because in verification/isomip,
126        rhoConstFresh=rhoConst (by accident)
127      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
128      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
129        new file model/src/seawater.F, so that they are available for all pkgs.
130      - convert potential temperature into in-situ temperature. This changes the
131        isomip tests => update tests
132    o add a flag writePickupAtEnd (default=true) to be able to suppress
133      writing a pickup at the last timestep
134    o tools/mpack-1.6 :
135      - disable automake (not working) and autoconf (not needed).
136      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
137        also cleaner with much less compilation warnings.
138    o pkg/profiles:
139      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
140      (for "less than 32 characters name" compiler requirement)
141    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
142      conditions that have a different sampling frequency than S/T/U/V obcs
143    o pkg/diagnostics (stats-diags):
144      - fix global Min/Max in case 1 processor get only empty tiles
145    o genmake2: replace (4 times)
146         make genmake_tc_1.o >> genmake_warnings 2>&1
147      with
148         COMM="$CC $CFLAGS -c genmake_tc_1.c"
149         echo $COMM >> genmake_warnings
150         $COMM >> genmake_warnings 2>&1
151      to make genmake2 always see the value of CC as specified in the optfile.
152    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
153      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
154      - modify verification advect_cs test to test SOM-advection on CS-grid.
155    o pkg/ctrl:
156      - Rewrite of ctrl_map_ini_ecco.F,
157        introducing a generic routine (ctrl_map_ini_gen.F).
158      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
159    
160    checkpoint59n
161    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
162      number in dedicate array "hdiag":
163      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
164        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
165      - many small changes (integer format) for large number of diagnostics
166      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
167        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
168    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
169      usingSphericalGrid, this allows to define the rotated grid coordinates
170      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
171      geographical coordinates according to the inverse of the rotation defined
172      by the Euler angles, so that Coriolis parameter and online-interpolation by
173      exf works with the geographical coordinates on XC/YC/XG/YG.
174      Naturally, this feature does not work with all packages, so some
175      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
176      profiles), because there the coordinates are assumed to be regular
177      spherical grid coordinates.
178    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
179      - introduce isopycnal diffusion coefficient control.
180    o tools/adjoint_options:
181      - additional control vector components.
182    o pkg/mnc: have mnc create marginally meaning full coordinate variables
183      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
184    o pkg/mypackage:
185      - add example of read/write pickup for state-var ;
186      - add entry points to the main code for state-vars diags & write-pickup.
187    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
188      transitions for useExfYearlyFields
189      - add new subroutine that determines the file to read from for
190        use*YearlyFields = .TRUE. and .FALSE.
191      - add a verification experiment to global_with_exf that tests
192        useExfYearlyFields with USE_EXF_INTERPOLATION defined
193    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
194      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
195      subroutines (which could be generated from a template, because they are
196      almost identical), for now they are included in obcs_prescribe_read.F for
197      simplicity
198    o pkg/exf:
199      - add a little more diagnostic to exf_interp_read (in analogy to
200        mds_read_field, can be turned off with debugLevel < debugLevA=1)
201      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
202        ugly but fast by unrolling short inner loops, inserting a unroll=8
203        directive in routine lagran, and splitting a loop and making do while the
204        outermost loop (the latter requires the intoduction of index arrays)
205    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
206    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
207      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
208    o verification/seaice_obcs: updated for restart test and latest options
209    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
210      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
211      for now this is only available for the C-grid code and also within
212      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
213    
214    checkpoint59m
215    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
216      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
217    o gad_som : fix flux output (& diagnostics) to have same units as other  
218      advection scheme fluxes (was previously multiplied by deltaT).  
219    o added verification/seaice_obcs both to test seaice open boundaries
220      and to provide an example matlab scrpt for generating them
221    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
222    o pkg/salt_plume: clean up salt_plume_frac.F to
223      remove redundancy in PlumeMethod 1 and 4
224    o pkg/kpp: added saltplume diagnostics
225    o pkg/obcs and pkg/seaice:
226      - do not set uice and vice to zero when OB*icefile are unspecified
227      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
228      - moved seaice tracer obcs after call to seaice_growth
229    o pkg/salt_plume: added various options for salt plume depth
230      criterion and for vertical distribution of the salt
231    
232    checkpoint59l
233    o pkg/ptracers: new version of ptracers pickup:
234      read meta file and write only fields which are needed to restart.
235      ( same logic as main pickup file ; also using pickupStrictlyMatch )
236    o pkg/seaice:
237      - add timescale for melting due to warm mixed layer as a means of
238        setting SEAICE_availHeatFrac more conveniently
239      - add a CPP-flag/runtime parameter check for flooding algorithm
240      - reformulated availHeat in seaice_growth.F to be independent of AREA
241    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
242      unit changes
243    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
244    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
245      SX vector computer.
246    o pkg/seaice:
247      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
248        seaice forcing fields can now be read only through pkg/exf
249      - removed some unused halos
250    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
251    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
252      or U/VICE from U/VWIND before computing U/VSTRESS
253    
254    checkpoint59k
255    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
256      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
257    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
258      all experiments pass when compile with un-initialised var. checking option.
259    o added pkg/salt_plume
260    o script to test restart (for now, in MITgcm_contrib/jmc_script)
261    o pkg/seaice: new read/write pickup version.
262      read meta file and write only fields which are needed to restart.
263      ( same logic as main pickup file ; also using pickupStrictlyMatch )
264    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
265    o lab_sea.hb87: modify the domain & update output.hb87.txt :
266      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
267      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
268      process. Fixed here by closing the domain at the Northern boundary.
269    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
270    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
271      a set of consecutive levels in/from a 3-D array.
272    o pkg/ptracers:
273      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
274      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
275    
276    checkpoint59j
277    o in pkgs: dic, obcs, offline, rbcs:
278      standard way to compute coeff. for time interpolation between 2 time reccords
279      which retains full precision (& make results less dependent on compiler).
280      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
281    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
282      packages instead of reading ice cover and wind speed separately
283    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
284     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
285      to allow to compile customized code before the update)
286    o cleaning-up:
287      - fix CPP instruction syntax in pkg/obcs
288      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
289        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
290      - fix some threads issue in IO parts.
291    o pkg/dic:
292      - add tons of "_d 0" (--> much better testreports !)
293       and then update outputs of tutorial_global_oce_biogeo
294    o pkg/mom_fluxform:
295      add a special version of momentum advection intended to conserve momentum
296      next to a bathymetry step or a coastline edge. (default = off = #undef)
297    o new read/write pickup version:
298      - for now, only implemented for main (mdsio) pickup file.
299      - write out only what is needed to restart; merge pickup_nh , pickup_ph
300        and main pickup together.
301      - read meta file; read only what is needed to restart; stop if a field
302        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
303        if it make sense (even if the restart is not perfect).
304      - if no meta file, assume that pickup to read corresponds exactly to
305        a pickup that would currently be written.
306      - read pickup written in the old format (until checkpoint59i) if it
307        recognizes an old meta file (no field-list).
308      - add a meta file in exp. which starts from a pickup: 2 cases:
309        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
310         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
311        b) a meta file describing the content of the associated pickup file
312         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
313    o pkg/mdsio & pkg/rw:
314      - new routine to read a meta file ; new set of routine to read
315        Multiple-fields file (with meta file).
316    o added open boundary conditions capability for seaice
317        HSNOW, HSALT, UICE, and VICE
318    
319    checkpoint59i
320    o adjoint:
321      * fix multiDimAdvection adjoint
322        (partial recomputation problem by TAF for fVerT(:,:,kDown)
323        and comlev1 size definition (maxpass vs. max. number of tracers)
324      * verification/global_ocean.90x45x15 adjoint now tests
325        NLFS and multiDimAdvection using DST3 (=30)
326      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
327    o pkg/kpp: add "_d 0" to real constant (if missing);
328      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
329      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
330    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
331      for internal parameters related to restart process (formerly from PARAMS.h)
332      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
333    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
334      as argument. (only atm2d & obcs write_pickup have not yet been updated)
335    o pkg/monitor:
336      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
337      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
338      - account for deep Atmosphere factor and density factor (anelastic)
339    o added open boundary conditions capability for seaice HEFF and AREA
340    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
341      thermodynamics
342      - requires a little reorganization, which affects the testreport results
343        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
344        so that now the conservative form is tested
345      - add a few comments
346    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
347    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
348    o add new diagnostics to seaice: advective, diffusive fluxes (only for
349      multidim-advection, for scheme 2 they are not filled) and transports,
350      thermodynamic growth rates
351    o change units of EmPmR (inside the code, + within coupling interface)
352      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
353      Affects results @ truncation level (cg2d match) and update output of
354       experiments: lab_sea(6), global_ocean.90x40x15(10),
355      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
356      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
357      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
358      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
359    
360    checkpoint59h
361    o pkg/exf:
362      - improve vectorization by moving if-statement out of loops in
363        exf_mapfields, exf_radiation
364      - exf_bulkformulae.F: introduce 2D fields and vectorize code
365    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
366    o testreport:
367      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
368        monitor & update offline_exf_seaice exp. output.
369      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
370    o pkg/seaice:
371      - bug fix in the evp solver: boundary conditions were affected be
372        masking of zMax/zMin (changes results)
373      - minor bug fix in boundary conditions in seaice_calc_strainrates
374        (changes results for no_slip)
375      - seaice_lsr.F: make interpolation of eta dependent on boundaries
376      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
377      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
378        stress formulation and no-slip boundary conditions
379    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
380      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
381    o pkg/seaice: a first HSALT time stepping equation has been checked in
382    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
383      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
384      without requiring DO-IF statements
385    o pkg/thsice:
386      use continuous power-law function for partition of energy between lateral
387      melting/freezing and thinning/thickening ; old code using step function
388      still available with #undef THSICE_FRACEN_POWERLAW
389      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
390    o testreport: change AD testing : check against results/output_adm.txt
391      using same scripts as for forward test.
392    
393    checkpoint59g
394    o adjoint testing: in preparation for changing testreport:
395      - output format: cost and grad written on separated lines
396      - ad output results in directory "results" (instead of "results_ad")
397    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
398    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
399    o pkg/ecco: allow user defined cost function contributions
400    o testreport:
401      Allow to choose (per experiment) the list of tested output variables
402       and the main variable (used to issue a pass/FAIL ) ;
403      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
404      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
405      Also modify printing of summary:
406       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
407       b) echo the list of tested variables in the individual summary.txt of
408          each experiment.
409    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
410      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
411      (but still depend on the tile decompostion of the domain).
412    o pkg/seaice: change a discretization detail to make the B-grid code
413      "more symmetric". This change is likely to remove all "ridges/leads" that
414      where quasi-aligned with the grid in B-grid solutions. It may also be
415      the solution to the stress coupling issues with the B-grid.
416    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
417      remove .cvsignore from input dir. (since testreport no longer run here).
418    o pkg/thsice:
419     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
420     - fix reshaping of sea-ice just after advection:
421       melt all the ice only if ice-volume is too small.
422     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
423       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
424     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
425    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
426      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
427    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
428      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
429      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
430      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
431      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
432      -> update output.txt
433    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
434     this affects truncation error: -> update output.txt of exp:
435      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
436      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
437    
438    checkpoint59f
439    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
440    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
441      a bounded range (in forward mode)
442    o pkg/ecco, ctrl, autodiff and mom_common:
443     internal parameter controls, completements of implementations
444    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
445    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
446      (not seem any difference in testing results).
447    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
448       at face corners.
449    o pkg/generic_advdiff:
450     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
451      loop range indices for computing vertical advection tendency
452      and do the calculation in the interior only (no overlap) ;
453      for now, only implemented for SOM advection (to save CPU time).
454     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
455    o exch2 adjoint
456      First set of changes:
457      - add exch2 hand-written adjoint templates
458      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
459        This will require cleanup in pkg/autodiff/*.F
460        (changed routines currently kept separate in verif. code/)
461      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
462        that used to hide exch2 or cubed-sphere specific code
463        (commented via 'cph-exch2')
464    o pkg/seaice
465      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
466    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
467       output of global_ocean.cs32x15.thsice .
468    
469    checkpoint59e
470    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
471      for B-grid vector (not yet tested) and C-grid vector (<- only used
472      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
473    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
474      (#ifdef ALLOW_SALT_PLUME)
475    o gather_2d/scatter_2d: removed halo regions
476    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
477      scheme and the corresponding test case (under front_relax dir). For now,
478      only available with Skew-flux form and not yet tested in realistic set-up.
479      adjoint: store directives updated, but gradient checks deteriorated,
480      so maybe GM/Redi adjoint is now broken.
481    o seaice adjoint
482      * add AREA, HEFF, HSNOW as control variable
483        (should not change lab_sea results)
484      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
485    o pkg/seaice:
486      * added computation of saltFlux in seaice_growth;
487        For time being, sea ice salinity is assumed constant
488        contribution of snow flooding to freshening of sea ice is neglected.
489        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
490        defaults to 0.0 in order to maintain backward compatibility.
491        Typical values for SEAICE_salinity are 4 to 10 g/kg.
492      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
493      * added SEAICE_availHeatFrac, which specifies fraction of surface level
494        heat content used to melt or grow ice
495      * commented out cap of HICE: it helps keep ice thinner
496      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
497      * applied OBCS T/S mask to HEFFM sea ice mask
498    
499    checkpoint59d
500    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
501     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
502     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
503    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
504     and change default value of parameter "GM_Small_Number";
505     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
506       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
507       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
508    o pkg/ecco: cost function when applying pkg/smooth to controls
509    o pkg/ctrl: add forcingPrecond run time parameter
510    o pkg/seaice:
511     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
512     - fix bug in metric terms of u-equation in LSR solver (implicit part),
513       changes verification/lab_sea
514     - rearrange implicit part of u-equation in LSR solver to make it easier to
515       read, understand, and debug. This causes changes at the truncation level.
516     - fix (serious) bug in the boundary conditions (sign error in the implicit
517       part) of the LSR solver. Changes all LSR results.
518     - fixed problem with HSNOW initialization to avoid thick snow when AREA
519       is initilized with small values - does not change lab_sea results.
520     - added HsnowFile initialization capability
521    o pkg/smooth: addition to model/src and pkg/ctrl so allow
522     initialization of pkg/smooth and application to control vector
523    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
524    o dependencies: pkg/profiles requires pkg/cal
525    o pkg/profiles:
526     - added option ALLOW_PROFILES_GENERICGRID
527         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
528         that interpolation information (grid points and coefficients) is provided
529         within the netcdf input files.
530         -> sample matlab scripts can be found in MITgcm_contrib/gael
531         that allow you to prepare netcdf input files.
532     - also modified: cleaner include statements, cleaner error print statements,
533       cleaner stops when error, and more tests of the netcdf input files consistency.
534    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
535    o pkg/seaice:
536     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
537       requires a new routine: seaice_diagnostics_fill.F
538     - make sure that seaice does not move if not forced (pressure replacement
539       method, Hibler and Ip, 1995), changes results
540     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
541     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
542       It is turned off by default (=-1.), because it changes the results.
543     - make it possible to read AREA from a file, too.
544    
545    checkpoint59c
546    o add S/R and diagnostics for oceanic mixed-layer depth
547    o move GMRedi call after all vertical mixing schemes (including KPP)
548    o pkg/thsice:
549     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
550      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
551    o pkg/obcs:
552     - bug fix for balance code
553    o pkg/seaice:
554      - allow values of SEAICE_elasticParm > 1
555      - add new parameter SEAICE_evpTauRelax as an alternative
556        to SEAICE_elasticParm
557      - make lsr boundary conditions free slip (by default), changes result
558      - add code for no slip boundary conditions for lsr
559      - set minimum of zeta to zero (and not 4e8) (changes results)
560      - add a cap on AREA after advecting AREA if seaice_growth is not called
561    o change calculation of Visbeck K:
562      - no longer depend on tapering scheme; instead, compute slope (limited
563        by GM_maxSlope). this is equivalent to what was comuted before with
564        clipping or linear tappering.
565      - fix vertical averaging (wrong by 1/2 level)
566      - leave the old version (but will not be maintained) within
567        #ifdef OLD_VISBECK_CALC / #endif
568      - update output of exp. ideal_2D_oce
569    o change error catch in calc_r_star to improve vectorization
570    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
571      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
572    o adjoint:
573      Re-organized adjoint checkpointing according to Matt Mazloff
574      (but with modifs/completions/cleanups)
575      Storing is now bundled into large arrays to optimized I/O
576      (and second step in cleanup of the_main_loop)
577    
578    checkpoint59b
579    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
580      - export/import (between ocean & coupler) fields needed for ocean DIC.
581    o pkg/seaice:
582      - get rid of three more exchanges seaice_calc_viscosities (required
583        different loop boundaries in seaice_lsr and seaice_ocean_stress)
584      - bug fix in seaice_ocean_stress (update of lab_sea required)
585      - reduce loop boundaries to necessary minimum also in seaice_evp
586      - go back to the old way of computing deltaC/Z as the adjoint likes that
587        better
588    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
589      passive tracer to an Age Tracer) + update output.txt
590    o pkg/exf:
591      - implement A-grid / C-grid selection for wind-stress input files.
592      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
593      for now, in exf_bulk_largeyeager04.F only :
594      - change implementation for case where windspeed + 2. components wind-stress
595        are read-in. AND use rhoConstFresh to convert evap.
596    o pkg/seaice:
597      - use correct EXCH_UV for wind-forcing (on A-grid).
598      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
599        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
600    o pkg/exf:
601      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
602      EXF_INTERPOLATION:
603      - merge global_with_exf/code version of exf_interp_read.F
604        to the main code ;
605      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
606        reading the file ; Important: This options needs to be defined to recover
607        previous code.
608        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
609      - no longer loose real*8 precision along the way when using exf_iprec=64.
610    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
611      - change discretisation of evp-solver in order to avoid another exchange
612        (changes lab_sea) and clean up a little
613      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
614        help the adjoint (this also changes the results slightly)
615      - add a few "_d 0" where they had been missing in seaice_evp.F
616      - cleaning up: remove unused seaice_calc_rhs.F
617    o pkg/exf: some cleaning-up:
618      - change various "constants" into runtime parameters
619      - cleaned-up Large&Yeager04 routine which should eventually
620        replace exf_bulkformulae.F (changed names of S/R and CPP)
621        and merged various ALLOW_ATM_WIND options
622     only used with thsice pkg (in thsice_get_exf.F):
623      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
624        which are used when useStabilityFct_overIce=TRUE (= the default)
625      - change default values of ice & snow emissivity and scale downward LW
626        by ice & snow emissivity.
627    o pkg/thsice:
628     fix few little problems, in thsice_calc_thickn.F:
629      - growth vertically (and not laterally) if iceFrac == iceMaskMax
630      - melt only laterally if hIce < hThinIce (as the comments say)
631      and in thsice_extend.F:
632      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
633      - start to form ice as soon as the minimum ice-volume is reachable.
634     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
635      and cpl_aim+ocn
636    o pkg/kpp
637     - move computation of surface related input fields to KPP into a new
638       subroutine kpp_forcing_surf.F
639     - remove wrong (within bi,bj loops) EXCH calls.
640     - little cleaning (add argument myThid in last position, cvs header ...)
641     - for now, fix conservation problem by exchanging KPPviscAz (may not
642       be the best fix)
643    o pkg/seaice
644     - check for inconsistent evp parameter/cpp-flag combination
645     - remove leftover errIO flat for obsolete name list error handling
646    o OpenAD
647     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
648    
649    checkpoint59a
650    o pkg/seaice: some parameter clarifications and a little bit of clean up
651    o pkg/thsice: rename run-time parameters:
652       himin       -> hIceMin
653       himin0      -> hThinIce
654       hihig       -> hThickIce
655       i0          -> i0swFrac
656       transCoef   -> bMeltCoef
657       frac_energy -> fracMelting
658      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
659       with default values (for now) that do not change the results.
660      remove old version of thsice vars advection in pkg/seaice.
661    o in FFIELDS.h:
662      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
663      - make pLoad & sIceLoad always available (but still only used if
664         ATMOSPHERIC_LOADING is #define).
665    o pkg/kpp: replaced _KPP_RL with _RL
666    o bug fixes for vertical diffusivity computations when both KPP and
667        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
668        are no longer updating the vertical diffusivity array
669        (passed as argument) but are (re-) setting those arrays.
670    o pkg/seaice: fix bug in evp solver, while doing that
671      - change (improve?) discretization of stress computations for both
672        cgrid-lsr and evp solver
673      - add a new routine to compute strain rates
674      - the above changes lab_sea results
675      - add no slip conditions for evp solver (off by default), lsr-version
676        may follow
677      - fix exchange for shear at Z-points (does not change lab_sea)
678      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
679        (to force the user to pick a time step since there is not "safe" way
680        of choosing it)
681      - add principal stress diagnostics
682      - rearrange fields for evp a little to avoid having to call a: too many
683        exchanges and b: exchanges for stress trensor components which we do
684        not have.
685      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
686        of evp, complete rewrite for lsr case (latter is does not yet work
687        in all cases)
688    o pkg/kpp: add code to have mixing in shelf ice caverns
689      - add myThid to all kpp routines (long overdue)
690    
691    checkpoint59
692    o pkg/exf:
693      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
694        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
695      - move exf header files from lower_case.h to UPPER_CASE.h ;
696        add missing cvs Header & Name
697      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
698      - add namelist param. selectStressGridPosition, exf_monFreq
699      - retire many _CLIM routines, and remove data.exf_clim
700        + params moved to data.exf
701        + climsst, climsss now handled by exf_set_gen, i.e.
702          climss?period=0 refers to constant field,
703          climss?period=-12 to monthly forcing
704      - split up namelists in data.exf
705    o pkg/seaice:
706      - remove seaice_exch and seaice_exch_uv
707      - remove superfluous exchange of theta
708      - add myThid to seaice_budget_ocean/ice
709      - add new interface for atmospheric wind forcing (C-grid only)
710        + new routine
711        + two new field (taux, tauy for stress over ice)
712        + removed one global field (DAIRN) for C-grid case only
713    o pkg/thsise
714      - 2nd set of modifs for thsice adjoint in conjunction with exf
715    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
716    
717    checkpoint58y_post
718    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
719      vertical diffusivity, similar to that in MOM4; turned on using
720      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
721      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
722    o Added capability for 3D specification of background vertical diffusion
723      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
724      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
725      "data" file that contains the 3D vertical diffusivity coefficients.
726    o ice dynamics (pkg/seaice) with thsice thermodynamics:
727      - add code within pkg thsice to advect & diffuse sea-ice fields
728      similar to (and will replace) what has been added in  seaice_advdiff.F,
729      but: - conserving Mass, Heat & Salt.
730           - better when using non-linear advection scheme (not yet fully tested)
731           - can also be used in atmospheric set-up (for now, only the diffusion).
732    
733    checkpoint58x_post
734    o IO option for global-file compact format:
735      - add options when generating topology (utils/exch2/matlab-topology-generator)
736      - add I/O capability (pkg/mdsio).
737      - adapt utils/matlab/rdmds.m to read this format.
738      for now long-line format not yet supported by pkg/mdsio (& exch2).
739    o shelfice: add a few diagnostics
740    
741    checkpoint58w_post
742    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
743      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
744      (and replace horiVertRatio in NH code).
745      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
746                         and tutorial_plume_on_slope (sensitive to truncation)
747    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
748      directly to drive seaice model (C-grid only)
749    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
750     - reintroduce computation of wind from stress,
751     - compute tau (in exf_bulkformulae.F) from windstress averaged to
752       mass points to avoid tau = 0
753     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
754    o rdmnc.m: make it work with "global" files created with gluemnc
755    o rdmnc.m : some improvements in dealing with singleton dimension
756      (tested on all testreport mnc output files).
757    o genmake2: disable pkg/profiles if netcdf test fails.
758    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
759    o move call to cal_readparms up to make calendar parameters/variable available
760      to all packages
761    
762    checkpoint58v_post
763    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
764      useDynP_inEos_Zc tested.
765    o pkg/exf: changes to properly interpolate/mask/scale initial fields
766    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
767      and portions thereof.  See read_cs.txt for description and examples.
768    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
769      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
770      following the great-circle arc between those 2 points.
771    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
772      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
773    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
774     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
775     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
776     - still needs work (not working with some options ; efficiency to improve)
777       and serious testing.
778     - use this scheme for temperature & salinity in 2 advection test exp.:
779       advect_xy & advect_xz, respectively.
780    
781    checkpoint58u_post
782    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
783    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
784    o testreport: add option "-skipdir" to skip some test.
785    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
786      momentum calculation.
787    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
788    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
789      remove checkpoint.F and the_correction_step.F (no longer used);
790      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
791    o add option (linFSConserveTr) to correct for tracer source/sink due to
792      Linear Free surface
793    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
794    o pkg/thsice: fix reading mnc-pickups
795    
796    checkpoint58t_post
797    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
798    o pkg/mdsio:
799     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
800       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
801       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
802     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
803     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
804       either MDS_READ_FIELD or MDS_WRITE_FIELD )
805     - new S/R (to replace MDSWRITEMETA), which allows to write more
806       informations (variable names, time ...) to meta files.
807     - modify rdmds.m to give back the meta file content.
808    o pkg/diagnostics: change vertical interpolation to be safer, and more
809       flexible (define p-levels to interpolate to in data.diagnostics);
810      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
811       diagnostic pointer.
812    o pkg/seaice: more cleaning up of seaice_growth, added many comments
813    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
814    o fix multi-category seaice:
815     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
816       SEAICE_MULTICATEGORY
817     - fix short wave heat flux
818    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
819       and allow to use EVP solver. Change forward lab_sea: test both EVP
820       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
821    o Initial check-in of lab_sea adjoint
822      (very similar to natl_box_adjoint/code_seaice)
823      * used C-grid and EVP solver
824      * used KPP, GM/Redi
825      * uses inAdExact=.TRUE.
826      * gradient checks fail for both ADM and TLM
827        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
828        f.d. gradients actually seem more problematic than ADM, TLM gradients;
829        issue is related to forward mismatch between g77 an ifort
830    o pkg/seaice: overhaul of thermodynamics
831     - growth.F and groatb.F are replaced by new routine seaice_growth.F
832     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
833     - move a few global fields out of SEAICE.h into seaice_growth.F and
834       make them 2D (FICE/QNETO/ ...)
835     - remove FO (it is the same as QNETO)
836     - introduce a few local fields to avoid modifying external fields such
837       as atemp, etc.
838    
839    checkpoint58s_post
840    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
841      changed exf_set_gen.F so that
842        genperiod=0 means input file is one time-constant field and
843        genperiod=-12 means input file contains 12 monthly means
844    o CG2D: use pre-computed solver main-diagonal (stored in common block);
845      this affects truncation error ; generate new output file for exp. which
846      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
847        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
848        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
849        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
850        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
851        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
852    o start implementation of deep-atmosphere and anelastic formulation
853    o verification: remove 2nd copy of input files and use script "prepare_run"
854      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
855    o mom_common/vecinv/fluxform: fix a few initialisation isssues
856    o profiles: fix for multithreaded case
857    
858    o diagnostics: rename few diags:
859      s/'PRESSURE'/'RCENTER '/g
860      s/'TICE    '/'oceFreez'/g
861      s/'TAUX    '/'oceTAUX '/g
862      s/'TAUY    '/'oceTAUY '/g
863      s/'SWFLUX  '/'oceQsw  '/g
864      s/DIFx/DFxE/g
865      s/DIFy/DFyE/g
866      and add few ocean-forcing diagnostics:
867      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
868    o modifications to pkg/seaice/growth.F and budget.F, which change results of
869      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
870      as actual snow thickness.  It now refers everywhere to effective snow
871      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
872    
873    checkpoint58r_post
874    o modifications to pkg/seaice/growth.F, which change results of
875      lab_sea experiment: fixes pertain to melting snow over open water, to
876      masking EVAP under sea ice, and to using the correct AREA variable for
877      computations of EVAP, PRECIP, HSNOW, and GHEFF
878    o add ability to read bathy, salt, and theta using MNC (off by def)
879    o add flooding algorithm and advection of HSNOW for pkg/seaice;
880      both are turned off by default and do no change any results
881    o seaice advection with pkg/thsice: a step toward the use of non-linear
882      advection scheme, but #ifdef or commented out for now (requires more EXCH).
883    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
884      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
885      in natl_box (affects results @ truncation level: update output.txt)
886    o multi-threading and IO:
887      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
888      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
889        (needed to work with SingleCpuIO): tested in all verif. exp.
890    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
891      affects the results (but none of the verification test uses this scheme).
892    o Adding some pkg/diagnostics capability to pkg/seaice
893      (will certainly be subject to changes)
894    o ctrl: adding new control variables:
895      lwflux, lwdown, evap, snowprecip, apressure, runoff
896    
897    checkpoint58q_post
898    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
899      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
900      high_res_cube configuration by 4% on Columbia.
901    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
902      add (in global_with_exf/code) a version of EXF_INTERP_READ without
903      dynamical allocation (seems to work in multi-threaded).
904    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
905      single CPU io) so that TAF does not have to see EESUPPORT.h
906    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
907    
908    checkpoint58p_post
909    o obcs: stop if obcs is used with useCDscheme = .true.
910    o shelfice:
911     - fix a sign error so that no slip at shelfice interface works
912     - remove stop for combination non-hydrostatic code and shelfice. That does
913       not mean, that the results are correct, but at least they are numerically
914       stable
915    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
916    o added adjoint exch routined for all exch*3d* routines
917      and updated flow directives
918    
919    checkpoint58o_post
920    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
921      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
922    o change controling S/R for writing pickup file (new S/R do_write_pickup)
923      and clean-up reading/writing of pickup files.
924    o fix local version of read/write pickup (NH part) in rotating_tank/code
925    o simplify EXCH interface:
926     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
927     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
928    o added the regrid package
929    o shelfice:
930     - add a simple boundary layer scheme to reduce noise
931     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
932    
933    checkpoint58n_post
934    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
935       local variable (not in common block).
936    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
937      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
938      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
939        to work with SingleCpuIO.
940    o add "_d 0" to real constant of pkg/cfc subroutines ;
941       update exp. cfc_exemple & tutorial_cfc_offline output files.
942    o multi-threading and IO:
943      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
944        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
945      - barrier before and after reading.
946      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
947      - avoid using MDS_WRITELOCAL for LAND pkg output.
948      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
949        common-block variables ; Allows multi-threading with master-thread IO.
950    o change default MAX_NO_THREADS from 32 to 4 ;
951      and stop cleanly when MAX_NO_THREADS is too small.
952    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
953    
954    checkpoint58m_post
955    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
956       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
957    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
958       keep global_ocean.90x40x15 (for AD testing) with former secondary test
959       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
960    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
961        add MITgcm_tutorials (= code + all the tutorials)
962    o ecco, option to compute cost for total ssh (mean+anom)
963    o consistent with addition of ptracer and ssh in pkg/profiles
964    o profiles: adding ptracer and ssh
965    o testreport: change multi-test output-file name
966      (from output.txt.{name} to output.{name}.txt)
967    o profiles: now ok for mutli-tiles case
968    o seaice: add 4 parameters for different advection schemes for area,
969      (effective) seaice thickness, enthalphy, and snow height. Their default
970      is the standard parameter SEAICEadvScheme
971    o calc_gw:
972     - add cosFacU in zonal viscous flux (harmonic.visc.).
973     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
974       of tutorial_plume_on_slope.
975    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
976    o calc_gw: true flux-form, account for horizontal grid spacing.
977      update rotating_tank results, but not plume_on_slope (affected at
978      truncation level, 11 digits).
979    
980    checkpoint58l_post
981    o calc_gw:
982     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
983     - remove side-drag for now (need to fix it); update plume_on_slope results.
984     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
985    o commit code to make SST/SSS weights spatially variable
986      (based on either variable in-situ or variable initial T/S weights)
987    o pkg/ecco:
988      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
989        now based on horizontally varying weights wthetaLev, wsaltLev
990      * cost_averagesflags now returns year indices in addition to day, month
991      * sflux balance is performed on annual basis
992        (sflxumm, sfluxmm2, bal_sfluxmm)
993      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
994        including separate counting and multipliers
995    o pkg/rbcs
996      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
997    
998    checkpoint58k_post
999    o testreport:
1000     - always build in dir. "build" (if not there, mkdir build instead of building
1001       & running in input)
1002     - run in dir run (if it exists), in build otherwise.
1003     - call prepare_run (if input/prepare_run exists)
1004     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1005    o pkg/exf modifications to interpolation and rotation routines for more
1006       reasonable treatment of North Pole singularity: for tracers North Pole
1007       value is set to northernmost zonal-mean value, for zonal velocity it is
1008       set to zero, and for meridional velocity it is set to northernmost value.
1009    o pkg/exf/exf_check_range.F
1010     - add tile index to diagnostics and move stop statement to the very
1011       end of the routine.
1012    o pkg/diagnostics: (diagnostics_main_init.F)
1013      define title of isomorphic variables according to the current config.
1014    o pkg/thsice with pkg/seaice dynamics:
1015    - fix domain of computation (interior only, required for exf) and do exchanges
1016    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1017    o towards a standard way of dealing with multi-threading in MONITOR
1018      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1019    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1020       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1021    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1022    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1023    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1024       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1025    o tracer advection:
1026     - clean-up and simplify calc_common_factors.F
1027     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1028       advection subroutine (but still not used within DST advection S/R)
1029    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1030    
1031    checkpoint58j_post
1032    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1033      from file (collects calls previously in FORWARD_STEP)
1034    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1035    o adjoint store dir. adjusted accordingly
1036    o genmake2
1037      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1038    
1039    checkpoint58i_post
1040    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1041      on wind stress (SEAICEstressFactor defaults to 1.)
1042    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1043      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1044    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1045      on CS-grid: no longer loosing mass.
1046    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1047    o pkg/ggl90: fix sloppy output and fix a bug
1048    o pkg/seaice: added SEAICEuseEVPpickup parameter
1049      - Set to false in order to start EVP solver with
1050        non-EVP pickup files when using SEAICEuseEVP
1051      - fix sign error in diffusion in seaice_calc_rhs
1052    
1053    checkpoint58h_post
1054    * Modifications for bottom topography control
1055      o replace hFacC by _hFacC at various places
1056      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1057      o add non-self-adjoint cg2d_nsa
1058      o update autodiff support routines
1059      o re-initialise hfac after ctrl_depth_ini
1060      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1061    * Adding verification for 5x5 box (4-layer) bottom topography control
1062    
1063    checkpoint58g_post
1064    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1065       used for mean seasonal cycle, mean diurnal cycle); add an example
1066       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1067    o pkg/ggl90:
1068      - add parameter (minimum surface kinetic energy)
1069      - fix bug (avoiding division by zero)
1070    o couple pkg/thsice to pkg/seaice:
1071      - modify advection in seaice to accomodate new scalar fields to be advected
1072      - only muliDimAdection scheme work with seaice/thsice
1073      - mapping of thsice-variables to seaice-variables, back and forth
1074      - does not break the verification experiments, but does not give the
1075        desired results either
1076    o pkg/seaice
1077      - make (default) second order advection a bit less confusing?
1078    
1079    checkpoint58f_post
1080    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1081      to pkg/seaice):
1082      - new routines thsice_map_exf and thsice_get_exf provide the interface
1083      - add an additional formal parameter to thsice_solve4temp
1084    o pkg/exf:
1085      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1086      - correct Stefan-Boltzmann constant
1087      - new parameter for longwave surface emittance
1088      - separate some stuff from exf_bulkformulae into new routines  
1089        exf_radiation, exf_wind
1090      - add new parameters and constants: longwave emissivity for ocean, ice
1091        and snow, evaporation parameters over ice
1092      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1093        either wind from stress or stress from wind
1094    o pkg/thSIce:
1095    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1096    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1097       and THSICE_CALC_THICKN
1098    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1099    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1100      to make debugging easier.
1101    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1102    o pkg/bulk_force:
1103      - clean-up comments and parameters ;
1104      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1105    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1106      generate new output for test-experiment: aim.5l_cs.thSI
1107    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1108      testreport accordingly
1109    
1110    checkpoint58e_post
1111    o SEAICE_CGRID adjoint done
1112    o R_STAR adjoint implemented.
1113      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1114      * need to sort out init. of h0facc, etc.
1115    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1116      to be able to use it in pure forward.
1117    
1118    checkpoint58d_post
1119    o upgrade simple test-experiment to tutorial example:
1120     step.1: duplicate the experiment and (step.2) will remove the old copy.
1121      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1122      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1123      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1124      tutorial_global_oce_biogeo    <- copy of dic_example
1125      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1126      tutorial_plume_on_slope       <- copy of plume_on_slope
1127      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1128      tutorial_global_oce_optim     <- empty for now (David ?)
1129      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1130     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1131    o correct a sign problem in cost_scat.F
1132    o obcs and ptracers: fix boundary conditions for advections schemes
1133      with larger stencil
1134    o thsice adjoint: start
1135    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1136      completeness
1137    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1138      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1139    o ptracers adjoint:
1140      * avoid extensive recomputatations
1141      * fix missing re-init. of gptr (missed by TAF)
1142    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1143      me to turn off the excessive output to STDOUT that this package produces
1144    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1145      and add those terms in Vector-Invariant formulation.
1146    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1147      if the control period (xx_hfluxperiod etc) is 0
1148    o in profiles pkg, clean routines and fix details
1149    o in ecco pkg, reading ssh data:
1150      fix problem in case the model does not start at iter0=0
1151    o fix mnc-pickup/restart for ptracers
1152    o new package prifiles:
1153      code to compute profile-based cost by Gael Forget
1154      (modifs in ecco, ctrl, autodiff)
1155    o Benign bug fix in initialization (spotted by M. Mazloff) of
1156      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1157    
1158    checkpoint58c_post
1159    o adjoint: finish NLFS adjoint and provide reference output in
1160      verification/global_ocean.90x40x15/results_ad_nlfs
1161    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1162      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1163      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1164      with SEAICE_CGRID defined.
1165    o move calendarDumps from "data" to "data.cal" and clean-up the code
1166      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1167    o add useEXF & useCAL flags (for now, set in hard-coded way)
1168    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1169      (were missing in NH mode, and wrong in quasihydrostatic mode).
1170      waiting for Chris updated version of calc_gw to add those CALLs.
1171    o fix bug in quasihydrostatic S/R ;
1172      add a test for this option: global_ocean.90x40x15.qshyd
1173    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1174      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1175    o add on/off flag useOffLine for package OFFLINE
1176    o seaice:
1177      - modify advection so that it works also on the C-grid
1178      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1179        problem in multi-tile runs with C-grid
1180      - add flags for clipping ice velocities and/or masking solver forcing
1181      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1182        C-grid solver
1183      - added a few comments to seaice_diffusion.F
1184      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1185        are now exclusive)
1186      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1187        required re-ordering the code a little:
1188       + make DAIRN global variable (defined in SEAICE)
1189       + move computation of the viscosities eta and zeta into a new separate
1190         routine (because I need to recompute them in seaice_ocean_stress.F)
1191    
1192    checkpoint58b_post
1193    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1194      update output.txt of exp. aim.5l_cs.thSI
1195    o various mnc cleanups and improvements:
1196      + shrink lookup tables by factor of ~4
1197      + better error reporting when running out of lookup space
1198      + able to handle longer path/file names (up to 500 chars)
1199    o adjoint:
1200      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1201      - TBD: "hidden" mom_vecinv recomp. in dynamics
1202    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1203     (allow to differentiate between forcing components using new integer flags:
1204      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1205     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1206    o ecco
1207      - enable trend removal from SSH anomaly obs.
1208    o adjoint
1209      - a fix for PmEpR when #undef EXACT_CONSERV
1210      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1211      - try to fix "hidden" recomp. in forward_step for NLFS
1212        (NLFS seems broken sometimes after I checked it in)
1213    o seaice:
1214     - add c-grid version of the dynamic solver:
1215       + three new routines that are the c-grid substitute lsr, dynsolver
1216         and ostres
1217       + put a few fields that were local to dynsolver into global common
1218         blocks, so that I can move the computation of stresses etc into
1219         seaice_lsr (saves coding but may break the adjoint).
1220     - replace more hardwired parameters by runtime parameters
1221     - add ice masks that mask the rhs of the implicit solvers where there
1222       is no ice (commented out in seaice_dynsolver, because i am not sure
1223       if this works properly), eventually this should replace the clipping
1224       of ice velocities in seaice_dynsolver to +/-40cm/s.
1225    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1226      include it only where its needed
1227    o move balancing of fluxes before the call of external_forcing_surf
1228    o seaice:
1229      - correct units of turning angles (now they are really in degrees)
1230      - move computation of GWATX/Y out of main routine into dynsolver
1231      - initialize GWATX/Y in seaice_init
1232    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1233      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1234    o seaice: add runtime flags for turning angles (default to zero)
1235    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1236      and trend from exf forcing and ctrl control adjustments
1237    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1238      (since checkpoint57x_post)
1239    o change the default rotation period to 86164.s = the Earth rotation
1240    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1241      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1242    o seaice advection: add code for choosing between the default (2nd order
1243      central differences) and multiDim advection schemes provided by
1244      pkg/generic_advdiff
1245    o seaice:
1246      - removed all references to SEAICE_GRID.h fields from
1247        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1248        (cubed-sphere configuration will change a little)
1249      - grid computations in seaice_init are obsolete now.
1250      - cleaned up code a little so that is easier to read (hopefully).
1251      - added new (better?) discretizations of default advection and diffusion
1252        (turn on with SEAICEuseFluxForm)
1253      - replace 1 in 3d global fields by kSurface in growth.F
1254      
1255    checkpoint58a_post
1256    o seaice:
1257      - bug fix in advect.F
1258    o shelfice:
1259      - separate shelfice load anomaly from pload (breaks with time
1260        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1261        Its default is 0., but it may be computed more cleverly from (unknown)
1262        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1263        done offline. A good approximation of the pressure load anomaly is
1264        necessary to avoid large initial adjustment processes underneath
1265        deep-reaching shelfice.
1266      - small fix in ISOMIP shelfice_thermodynamics
1267      - add more sophisticated thermodynamics of Hellmer (1989), this is
1268        now the default
1269      - give a few constants more intuitive names
1270    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1271      if bulk formulae are used in long integration (especially EmPmR). Turn
1272      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1273      if balancePrintMean, the imbalance that is substracted is printed to
1274      STDOUT.
1275    o fix bug (typo) in obcs_apply_eta.F
1276    o add a new package shelfice which enables us to model the circulation
1277      underneath shelf-ice with draughts of hundreds of meters.
1278     - works
1279     - to do: + include improved thermodynamics
1280              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1281                instead of new field kTopC
1282              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1283                instead of new field R_shelfIce and new code in ini_depth.F
1284                and ini_mask_etc.F?
1285              + adjust vertical mixing schemes?
1286    o seaice pkg:
1287     - add a cpp-flag to include a simple formula for a salinity dependent
1288       freezing point of sea water at the surface
1289     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1290       meridional stresses are now different (and hopefully correct)
1291    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1292       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1293       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1294    o pkg/diagnostics: add options and parameters for regional-statistics
1295       diagnostics ; define regions by reading a region-mask from a file
1296       (might add other options later)
1297    o pkg/bulk_force:
1298     - add option and parameters to use AIM surface-flux formulae.
1299     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1300       others forcing fields (defined in PARM05, parameter file "data") are loaded
1301       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1302     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1303     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1304     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1305       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1306     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1307    
1308    checkpoint58
1309    o add "--embed-source" option to genmake2 which, when the supporting
1310      tools can be compiled (as determined by genmake2) will turn on the
1311      embed_files package which then embeds the entire MITgcm source code
1312      (*.[fFhc] + Makefile) used for the build within the executable
1313      - requested by CNH but off by default
1314      - adds a paltry <9MB to the mitgcmuv executable in most cases
1315      - only writes the output when useEMBEDSRC in eedata is true
1316    o clean up 3-dim. relaxation codes:
1317      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1318      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1319      * Thanks to Tom Haine for testing!
1320    
1321    checkpoint57z_post
1322    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1323      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1324    o fix the pickup behavior for obcs in combination with ptracers
1325    o fix a bug in ptracers_external_fields_load
1326    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1327      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1328    o transfered surface NH pressure to eta field (if exactConserv).
1329    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1330         and update lab_sea output.txt file.
1331    o completing 3-dim. relaxation code: additional term
1332         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1333      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1334      * At compile time, in "EXF_OPTIONS.h" set
1335          #define  ALLOW_CLIMTEMP_RELAXATION
1336          #define  ALLOW_CLIMSALT_RELAXATION
1337      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1338          tauThetaClimRelax3Dim = 15552000.0,
1339          tauSaltClimRelax3Dim  = 15552000.0,
1340      * 3 cases:
1341          1) Use a constant-in-time 3-dim. field
1342          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1343          3) Real-time relax. to time-evolving prescribed field
1344    o Adding Laplacian-type smoothness constraint on
1345      initial and boundary (forcing) controls (ic, bc)
1346      * enable at compile-time via
1347        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1348      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1349      * Absolute scale somewhat unclear so far
1350      * no area weighting was included since no other cost term does so far
1351    
1352    checkpoint57y_post
1353    First step for a NLFS adjoint
1354    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1355    o new init. routines for calc_r_star, calc_surf_dr
1356    o still need to deal with ini_masks_etc
1357    o testreport seemed happy
1358    checkpoint57y_pre
1359    
1360    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1361    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1362    o add new offset feature to offline pkg (plus minor cleanup)
1363    o cfc fixes for final year of integration
1364    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1365      be in GCHEM_OPTIONS).
1366    
1367    checkpoint57x_post
1368    o fix testreport Pb in multiple test experiment.
1369    o cleanup our namelist syntax in verification:
1370      - make it more F95 standards compliant (some work still needed)
1371      - allows the vast majority of our tests to work with gfortran
1372    o Non-Hydrostatic:
1373     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1374     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1375    o Allow to apply AB on T,S rather than on AB(gT,gS):
1376     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1377     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1378       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1379     - need a "clever" read_pickup to restart from the other AB formulation
1380    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1381    o remove some unused variables (reduces number of compiler warnings)
1382    o adjoint
1383      * Disable useVariableViscosity for adjoint for time being
1384        (there are a number of extensive recomputations)
1385      * Initialize certain variables needed for adjoint
1386    
1387    checkpoint57w_post
1388    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1389                 fix the singleCpuIO RS version of MDSWRITEFIELD
1390       and add a WARNING if using globalFiles=T with multi-processors.
1391    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1392      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1393    o tracer advection scheme:
1394      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1395       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1396       was not very convenient).
1397      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1398       (further tests needed for the implicit DST & Flux-Limiter schemes).
1399    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1400      and sRef for convenience, handy, when you want to initialize
1401      ptracers in a large domain with a constant non-zero value. Also,
1402      untangle ptracers_init.F a little.
1403    
1404    checkpoint57v_post
1405    o change dome exp. to use variable viscosity in side-drag terms.
1406    o remove all the files from the cfc_offline test since they are now
1407      incorporated into tutorial_cfc_offline which has been producing
1408      identical results for a few days of testing
1409    o add new parameter: sideDragFactor to enable half-slip-side BC
1410      and change side-drag S/R to use viscosity from mom_calc_visc
1411      (can switch back by setting sideDragFactor=0.); affects results at
1412      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1413       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1414    o vorticity & strain are now computed without masking, to account for
1415      no-slip-side BC in variable viscosity calculation ; mask is applied
1416      anyway later on, before computing advection/coriolis terms.
1417    o modify exp4 to test new obcs support for reading from external files
1418      and for passive tracers
1419    o fix behavior of ptracers_monitor when monitor output is written to a
1420      netcdf-file; still not independent of monitor.F (writes in the same
1421      file).
1422    o change default value of tRef (put a uniform, meaningful value for ocean
1423      & atmos) and initialize sRef (was missing, as Martin mentioned).
1424    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1425      to be proportional to enstrophy dissipation length.  Thus,
1426       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1427      This is now consistent with Smagorinsky and with the manual.
1428    
1429    checkpoint57u_post
1430    o OBCS and PTRACERS: add open boundary support for passive tracers
1431      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1432        OB-values from file; this is not different from the way theta and salinity
1433        are treated
1434      - however, Orlanski-radiation conditions are not supported, and the model
1435        will stop if you use pTracers and Orlanski at the same time.
1436      - beefed up the rountine obcs_external_fields_load: now only those open
1437        boundary values are overwritten with values from files for which there
1438        are really files, otherwise the OB-fields remain untouched. This makes
1439        it possible to use different OBs at different ends of the domain (as
1440        with EXF)
1441    o reduce number of exch calls in shap_filt (s2).
1442    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1443      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1444    
1445    checkpoint57t_post
1446    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1447    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1448      same truncation, independent of the face number: affects affects several
1449      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1450    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1451      note that biharmonic viscosity + no-slip was not tested in any experiment.
1452    o fix bug in non-linear free-surf side-drag ; generate new output for
1453      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1454    o make mnc honor the writeBinaryPrec flag for most kinds of output
1455    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1456    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1457      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1458    o add brackets in multi-terms sum to get same truncation, independent of
1459      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1460      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1461    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1462      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1463      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1464      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1465      Suggested values of viscosity parameters found in mom_calc_visc.
1466      Many new viscosity diagnostics available.
1467    
1468    checkpoint57s_post
1469    o Add clearing-house for viscosity calculations, mom_calc_visc and
1470      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1471      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1472      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1473      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1474      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1475      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1476      ViscAhStrain and viscAhTension are now retired.
1477    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1478    o In response to JMC's bug report, genmake2 now ignores any soft-links
1479      that it finds in the *current* directory when searching for files.
1480      Soft-links found in any other source directories will still work as
1481      they did before.
1482    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1483      a C routine to unlimit the stack size
1484    o mnc-ify pkg/aim snapshot vars
1485    o mnc-ify pkg/land as requested by Daniel
1486    o various changes to mnc including:
1487      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1488      - output can now be grouped so that all files within a group
1489          change the ITER portion of their names in lock-step together
1490      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1491          and works with both EXCH1 and EXCH2 (but needs more testing)
1492      - writing works for all verification test cases w/ g77 on Linux
1493    
1494    checkpoint57r_post
1495    o make MNC variable initialization happen earlier
1496    o add diagnostics for (almost) each term of the momentum Eq.
1497    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1498    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1499    o remove MINIMAL_TAVE_OUTPUT option ;
1500      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1501    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1502      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1503    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1504    o add time-dependent SST, SSS control
1505    o cost terms in ecco/ modularized (new cost_generic.F)
1506    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1507    o new infrastructure for seaice model vs. obs misfits in seaice/
1508      * driver from the_main_loop.F is seaice_cost_driver.F
1509      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1510      * gradient check in Exp. 6a of natl_box_adjoint/
1511    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1512      (see README file)
1513    
1514    checkpoint57q_post
1515    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1516    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1517      - bug was reported by Jean-Michel and Ian Fenty
1518    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1519      update exp. cpl_aim+ocn output.
1520    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1521      Needed for high-res. runs with large global files
1522      to be able to limit tapelev size
1523    o Changed some tests for adjoint:
1524      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1525      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1526      * global_ocean.90x40x15/ back to default 3-level checkpointing
1527    o Modifications to enable scripted COMMON to MODULE conversion
1528      * verification/OpenAD/code/ has necessary scripts and description;
1529      * converts, compiles and runs successfully;
1530    
1531    checkpoint57p_post
1532    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1533    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1534      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1535    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1536    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1537      (was already the case for dissipation with mom_vecinv,
1538       and also the case for grad.PhiHyd when staggered-timeStep)
1539      This will allow to put dissipation out-off the AB time-stepping.
1540     Unfortunately, affects truncation error. Update output of exp. that "fails"
1541      (cg2d matching number) and leave the others for later: front_relax(10),
1542      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1543      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1544    
1545    checkpoint57o_post
1546    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1547      (2) its ready to be documented during the 20050801 DocFest
1548    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1549      for ideal_2D_oce and lab_sea on linux_ia32_g77
1550    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1551      in global1x1_tot/code_seaice_adj to access indices 32, 33
1552      (worth another tag)
1553    
1554    checkpoint57n_post
1555    o adding precip control xx_precip 32
1556    o adding swflux control xx_swflux 33
1557    o Replacing 10 forcing penalty cost routines by 1 generic.
1558    o Implementing partitioning in time-mean and variable adjustment
1559      for atmos. state.
1560    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1561    o in natl_box_adjoint:
1562      * updated exp 1 to 10
1563        (but does not have time-mean vs. variable split results yet)
1564    o updated global1x1/*_seaice_adj/
1565      to incorporate latest changes
1566    o enable useSingleCpuIO for mdsio vector routines
1567      (applies in particular to tapelev I/O)
1568    o removed inefficient K-loop in all active_file*control*.F
1569    
1570    checkpoint57m_post
1571    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1572      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1573    o pkg/exch2: filling of face-corner halo regions is optional
1574      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1575    
1576    checkpoint57l_post
1577     tag before updating tutorials (pre-release-2)
1578    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1579       for output and interpolation of input fields onto model grid)
1580    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1581       Affects results of exp. rotating_tank ; update output.txt.
1582    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1583          and taking the square quantity and/or using a fraction-weight field.
1584    o fix aim_diagnostics_init.F mate numbers.
1585    o add mnc output capability to diagnostics/diagstat and update
1586      our cvsignore files for the ACSII output generated
1587    
1588    checkpoint57k_post
1589    o lab_sea now uses diagnostics package and provides a suite of
1590      new EXF diagnostics output.
1591    
1592    checkpoint57j_post
1593    o exf
1594      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1595        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1596        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1597      * extended diagnostics output
1598        - now includes all EXF variables
1599        - hs, hl moved to common block
1600        - separate S/R for diagnostics, called after ctrl vector is added
1601        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1602        - EXFqnet contains true Qnet (i.e. includes qsw)
1603      * updated verif. lab_sea, global_with_exf
1604      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1605        to ensure that diagnostics sees a true EXFqnet
1606    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1607    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1608      several times with different frequencies.
1609    o mnc-ify the thsice package as requested by Daniel Enderton
1610      - the monitor--MNC output needs work
1611      - many attributes need to be added (most are currently blank)
1612    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1613      - many attributes need to be added (most are currently blank)
1614    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1615    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1616    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1617      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1618         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1619    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1620     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1621    
1622    checkpoint57i_post
1623    o Diagnostics package was changed: diagnostic allocation is now deactivated
1624      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1625    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1626      add 1rst Order upwind vertical Shear.
1627    o add a quick fix for A/B checkpointing in OFFLINE mode
1628    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1629      end-run around the C/Fortran linking horror in eesup/src/timers.F
1630    o added pkg/runclock: allows user to terminate run based on wall clock
1631    o added non-hydrostatic scaling parameter: nh_am2
1632    o pkg/my82: futile attempt to make results compiler-independent by adding
1633      some "_d 0", etc. no effect.
1634    o for mnc output, fill the 'T' coordinate var with myTime and create a
1635      separate 'iter' variable for iteration count
1636    o pkg/diagnostics:
1637      add new capability: output of Global/Regional & per-level statistics ;
1638      tested against monitor output (including land & thSIce) on various exp.
1639    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1640    
1641    checkpoint57h_done
1642      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1643      data.diagnostics, data.gchem, data.ptracers) is done.
1644    
1645    o pkg/diagnostics: prepare for Global/Regional statistics.
1646      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1647    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1648      and rename it: DIFFERENT_MULTIPLE
1649    
1650    checkpoint57h_post
1651    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1652    o pkg/diagnostics: change output frequency, now in seconds (instead
1653      of Nb of iterations). This requires to change data.diagnostics.
1654    checkpoint57h_pre
1655    
1656    o in mnc, let the user create the output dir if both mnc_outdir_date
1657      and mnc_outdir_num are false
1658    o add fflags() to pkg/diagnostics which allows one to specify, on a
1659      per-file basis, the file precision [default behavior is unchanged]
1660    o added diagnostics to pkg/kpp, including computation of mixed layer
1661      depth based on a temperature/density criterion
1662    o updated verification/natl_box to test the new pkg/kpp diagnostics
1663    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1664    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1665    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1666      not mnc -- this mistake was found by JMC and is now corrected
1667    
1668    checkpoint57g_post
1669    o add Adams-Bashforth 3rd Order time stepping:
1670      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1671      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1672    checkpoint57g_pre
1673    
1674    o make lambda[Theta,Salt]ClimRelax spatially varying
1675      (default remains spatially uniform constant based on tau)
1676    o added new control variables
1677      * init. uVel, vVel, etanN
1678      * lambda[Theta,Salt]ClimRelax
1679    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1680      (suggested by G. Forget)
1681    
1682    checkpoint57f_post
1683    o add parameter "baseTime" = model base time = time at iteration zero
1684      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1685      account for baseTime shift
1686    o move Coriolis arrays from PARAMS.h to GRID.h
1687    checkpoint57f_pre
1688    
1689    o mnc-ifying the seaice package
1690    o introduced an alternative length scale calculation for use in the limiting
1691      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1692    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1693    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1694      as well as grad(vort3).  Made it compatible with both approximate form
1695      for the cubed sphere and full form of these gradients.  Added flag
1696      useFullLeith to select between approximate and full form.  
1697    o add "d0" in getcon.F to reduce differences between compilers/platforms
1698      update output.txt of exp. fizhi-gridalt-hs
1699    o change port_rand funtion to allow to set the seed.
1700    o fix obscure MNC bug involving conversion between reals and integers
1701      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1702        new version is now more standards-compliant
1703    o adjoint-related modifications
1704      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1705      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1706      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1707    
1708    checkpoint57e_post
1709    o Adding eddy stress controls a la Ferreira et al.
1710    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1711    
1712    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1713      update output.txt of exp. fizhi-gridalt-hs
1714    o add more "Z" dimensions and associated coordinate vars to MNC
1715    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1716    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1717      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1718      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1719      months and years.  Requires pkg/cal.
1720    o diagnostics: add pickup functionality
1721      - off by default for backwards compatibility
1722      - current version only uses MDSIO -- MNC will be added
1723    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1724    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1725    
1726    checkpoint57d_post
1727    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1728    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1729      output from the diagnostics package
1730    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1731    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1732      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1733    o add coordinate variables to the MNC output from the diagnostics package
1734    o change MNC-flags default value: true when useMNC=TRUE
1735    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1736      the ability (off by default) to read the grid information using MNC
1737    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1738    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1739    o do snap-shot diagnostics at the middle of the time-interval (instead of
1740      at the end).
1741    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1742      new test for AIM with thSIce + slab-ocean
1743    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1744    o move state variable diagnostics to the beginning of the time step ;
1745      (note: still needs some work specially for snap-shot diagnostics)
1746      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1747    
1748    checkpoint57c_post
1749    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1750    o generate new output.txt files on faulks with g77 & the new -ieee option
1751    checkpoint57c_pre
1752    
1753    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1754      update output.txt of exp. global_ocean.90x40x15
1755    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1756      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1757    o add saltFlux(+File) forcing capability with periodicExternalForcing
1758    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1759    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1760    o improvements for the MNC output from DIAGNOSTICS:
1761      - correct handling of the unlimitied dimension
1762      - all dims now have associated coordinate variables
1763      - variables located at U, V, and Corner ("Z") points are now written
1764        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1765        *all* data points are output
1766    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1767    o added pkg/seaice/seaice_monitor.F
1768    o mdsio_readfield.F can now read files visible only to master MPI process.
1769    o pkg/seaice: some test code for ice-modified ocean stress
1770    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1771      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1772      spurious negative numbers for precipitation and humidity.  Will cause
1773      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1774    o pkg/ctrl/
1775      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1776        May be enabled via doPackDiag
1777      *  introduce z-scaling of
1778         + gradient (doZscalePack) and
1779         + control (doZscaleUnpack)
1780    o pkg/mdsio/
1781      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1782      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1783    
1784    checkpoint57b_post
1785    o simplify options in diagnostics_fill arguments (remove weird combinations)
1786    o fix MNC coordinate variables so that they now contain per-face index
1787      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1788      general, EXCH2 grids are only aligned to a "local" coordinate system
1789    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1790    o Implement instantaneous output within pkg diagnostics:
1791      setting a negative frequency in data.diagnostics produces
1792     "snap-shot" output (as opposed to time-average if freq > 0)
1793    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1794      NOTE: change ptracer diagnostics name: use 2 characters to work with
1795            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1796    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1797      becomes the coordinate variable for the 'T' dimension
1798    o add CF-style coordinate variables to MNC
1799      - just a first cut:  numbers are meaningless on the cubesphere and
1800        missing along the T axis but otherwise it works!
1801    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1802    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1803    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1804      this is based directly on what the model compute, so that the content of
1805      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1806    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1807    o clean up build options files for SunOS, in particular
1808      - remove -traditional from xmakedepend
1809      - change -xarch=v9 to -xarch=native for f77
1810      - restore use of make (not gmake)
1811      - add CC=gcc if using g77
1812    o changes per discussion of AM, JMC, & EH3 today:
1813      - move redundant "grid" variables out of "state" -- in preparation of
1814        creating proper CF-style coordinate variables and in recognition
1815        that any/all grid variables can be easily copied (eg. w/NCO) from
1816        the grid files into any of the other NetCDF files
1817      - *always* output grid variables with MDSIO (this will eventually be
1818        changed)
1819      - output MNC grid file if useMNC is true
1820    o every instance of _END_MASTER() has been found and replaced with
1821      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1822      preprocessors
1823    o re-arrange diagnostics pkg initialisation:
1824     - allow each package to extend the available diagnostics list
1825     - add some checking and fix small problems (multi-threaded, ...)
1826     - new S/R diagnostics_fill (replace fill_diagnostics):
1827       look through the short list of active diag. (instead of the long list)
1828       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1829    
1830    checkpoint57a_post
1831    o this set of changes restores TAMC compatibility
1832      tested for global_ocean.90x40x15 adjoint on trough
1833      (what a pain)
1834    
1835    checkpoint57a_pre
1836    o some modifs in tools/build_options for sunos
1837    o call ctrl_pack for ctrl at end for optimcycle=0
1838    
1839    checkpoint57
1840    o add horizontal bi-harmonic viscosity for vertical velocity
1841      - new parameter viscA4W (defaults to viscA4)
1842      - affects only non-hydrostatic code
1843      - to be done: no-slip lateral boundary conditions
1844    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1845    o implement Implicit Vertical advection for pTracers
1846    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1847      (implemented also for implicit vertical diffusion & advection)
1848    o OBCS: extend application of tracer open boundary conditions
1849      to a strip beyond the boundary of width Olx/Oly
1850    o add call monitor to TAF set of required calls (flow directives)
1851      and include in natl_box_adjoint
1852    o untangle a few ifdefs related to cost, ctrl, autodiff
1853      untangel a few ALLOW_ECCO_OPTIMIZATION
1854    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1855      (theta2, salt2 in ecco_cost_weights)
1856    
1857    checkpoint56c_post
1858    o OBCS as control variables
1859      - update ctrl_ad_diff.list, obcs_ad_diff.list
1860      - remove balance of obcs controls from default
1861      - fix index bug nobcs in ctrl_init
1862      - fix dummy fields filen in ctrl_pack
1863      - add dummy weights for obcs
1864    o lsopt: comment out fort.94 output
1865    o optim:
1866      - remove unnecessary header files
1867      - adjusted namelists
1868      - add xerbla.F to Makefile
1869    o exf:
1870      - multiple modifications of exf_check_range
1871      - unit change in exf_init_runoff from [m/year] to [m/s]
1872    o mdsio:
1873      - i/o-vector change debugLevel from debLevA to debLevB
1874    
1875    checkpoint56b_post
1876    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1877      is called from DO_THE_MODEL_IO
1878      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1879      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1880      - clean up PTRACERS_WRITE_TIMEAVE a little
1881    o add another verification experiment that tests both the cfc-pkg and
1882      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1883      reactive tendencies treated inline with regular timestepping
1884    o testreport previously did a lousy job of comparing small numbers, so
1885      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1886      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1887      testreport.
1888    o ptracers_monitor: bug fix for MPI
1889    
1890    checkpoint56a_post
1891    o GCHEM: finish reorganizating the package
1892      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1893        (introduces another 3D-array for each passive tracer, but only if
1894        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1895        gchemTendency is not needed because the timestep is done separately)
1896      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1897      - GCHEM is now---more or less cleanly---separate from PTRACERS
1898      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1899        so clear to me how that should be done in a general way.
1900    o CFC: improve formatting of output in CFC_ATMOS
1901    o PTRACERS:
1902      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1903        that ALL experiments with ptracers enable can be checked. This makes
1904        GCHEM_MONITOR obsolete.
1905      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1906        monitorFreq
1907      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1908    o add PTRACERS (PTR0[1-5]) to testreport output
1909    o exf_check_range:
1910      * default changed to .TRUE.
1911      * will check values for niter0 if debLevA, every timestep if debLevB
1912      * STOP in exf_check_range if 'out of range'
1913      * range chosen generous to allow for potential extema
1914      TBD: a version with stricter range
1915           permitted range would be runtime parameters
1916    o GMredi:
1917      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1918      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1919      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1920    o GCHEM:
1921      - move call to GCHEM_FORCING_SEP, so that it is now called before
1922        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1923      - introduced a useGCHEM runtime flag and applied it everywhere.
1924      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1925        this flag is now only visible within GCHEM-pkg routines.
1926      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1927        be replaced by a 3D array that is computed before thermodynamics; for
1928        this, the tracer ID iTracer had to be included into the parameter list
1929        of ptracers_forcing
1930      - set up forward_step to call gchem_forcing, that will replace
1931        gchem_forcing_int in ptracers_forcing
1932      - cleaning up
1933    o small cleaning of exch2: remove files that are also in eesupp/src
1934    
1935    checkpoint56
1936    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1937    o mnc: cleanup "full" files--fixes out-of-memory problem
1938    o ECCO-GODAE
1939      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1940      * fully merged and updated from SIO code
1941        windstress sign change affects
1942        - exf_inscal_[u/v]stress
1943        - sign of xx_tau[u/v] adjustments
1944        - signs in cost_scat
1945      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1946      * natl_box_adjoint updated and compressed
1947      * 2-level checkpoint switch added
1948        (tested in EXP. 1 of natl_box_adjoint)
1949      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1950    o SVD
1951      * first complete, non-hacked version for SVD calculations
1952      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1953        performed via direct access files admtlm_vector.it????
1954        (via ctrl_[un]pack)
1955      * optimcycle is used for ARPACK iteration counter
1956        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1957      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1958        and add linear transforms where necessary
1959      * controls are initial/final SST, SSS (can be extended; need to check
1960        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1961    o mdsio: filename info to both stderr, stdout
1962    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1963      from sign change
1964    
1965    checkpoint55j_post
1966    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1967      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1968    o add consistent build directories and .cvsignore files to verification
1969    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1970    o make all subroutines 30 or less characters in length for certain older
1971      compilers to work (a thorough search only turns up two routines in
1972      pkg/ptracers)
1973    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1974      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1975    
1976    checkpoint55i_post
1977    o change arrays for total vertical diffusivity (2.D if explicit,
1978      3.D if implicit) ; each ptracer uses its own background value.
1979    o added mnc/NetCDF output capability to ocn_compon_interf
1980      - added bits to verification/cpl_aim+ocn so that it can run on
1981        ITRDA and other clusters without the mpirun "-wd" option
1982    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1983      configuration
1984    o give MNC the ability to create additional files rather than
1985      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1986      - the default is just less than 2GB which is a practical limit
1987        on many systems
1988    o Compute the non-local term using either KPP vertical diffusivity (=default)
1989       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1990    
1991    checkpoint55h_post
1992    o add verification test "vermix"
1993    o remove all the *_ioinc flags and replace with the single global
1994      outputTypesInclusive flag
1995    o allow to set a vertical profile of vertical diffusivity for T & S
1996    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1997    o useMNC moved from data.mnc to data.pkg
1998    
1999    checkpoint55g_post
2000    o Renaming carbon AD experiments to comply with testreport conventions
2001    o Updating adjoint of Held-Suarez hs94.1x64x5
2002    o Fixing directives for non-ECCO forward_step, after ECCO directives
2003      have been fixed to avoid recomp. of do_oceanic_phys
2004      Works well for global_ocean.90x40x15,
2005      but recomp. issue remains for carbon
2006    o Updating adjoint output for natl_box_adjoint after
2007      pkg/ecco has been modified (see taga c55d_post)
2008    
2009    checkpoint55f_post
2010    o rename to timeave_init_fixed
2011    
2012    checkpoint55e_post
2013    o some delicate re-shuffle of store directives to avoid one
2014      extra call of do_oceanic_physics
2015      affects ecco_the_main_loop.F, do_oceanic_physics.F
2016      checkpoint_lev1_directives.h
2017    o NB: this may break global_ocean adjoint temporarily,
2018      but it is clear how to fix it. Will do later, need this now.
2019    
2020    checkpoint55d_post
2021    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2022    o ecco_cost_weights is modified to 1x1 runs
2023    o modifs to allow observations to be read in as
2024      single file or yearly files
2025    o enable to read exf forcing fields as either
2026      single file or yearly files (flag useExfYearlyFields)
2027    checkpoint55d_pre
2028    
2029    o switch between 2-level and 3-level checkpointing
2030    o add ability of MNC to write local and "partial" (eg. 2D slices where
2031      the full 3D field is never actually stored) arrays to NetCDF files
2032      with the correct (that is, the complete multi-dimensional) set of
2033      array indicies
2034      - used in mom_vecinv() to write the diagFreq output
2035      - tested (demonstrated) in verification/aim.5l_cs
2036    o further mnc-ification
2037      - add verification/lab_sea to the list with mnc setups
2038      - fix undefined mnc v-names in cd_code
2039      - add kpp to mnc output (both snapshot and timeave)
2040    o non-hydrostatic code
2041      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2042        in calc_gw.F
2043      - defaults to viscAh
2044      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2045        friction or Leith) in non-hydrostatic mode, as long as there is
2046        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2047    o pkg/cost
2048      extend simple cost functions to treat time mean quantities
2049      (T,U,V) via cost_accumulate_state from cost_tile
2050    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2051        be 2 times larger than the minimum size the advection scheme requires.
2052        now get a perfect conservation of salt in advect_cs test-exp (updated)
2053    o GGL90 (Gaspar's TKE mixed layer)
2054      - add horizontal diffusion of TKE, requires exchanges in
2055        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2056        default. In OPA there is no horizontal diffusion of TKE but the
2057        mixing coefficients are computed from a horizontal average of TKE of
2058        6 points or so. I think that diffusion has a little more physical
2059        justification.
2060      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2061        was in vain)
2062      - mask tke-variable in ggl90_init
2063    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2064    o fix biharmonic diffusion on CS-grid.
2065    o more obcs stuff
2066      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2067        for reading boundary values. This routine is called from
2068        obcs_prescribe_read
2069      - updated obcs_check
2070      - changed sponge layer relaxation parameter units for days to seconds
2071      - turned off sponge layer by default
2072      - changed argument list of OBCS_CALC to myTime+deltaTclock
2073      - fixed about 35 bugs in obcs_external_fields_load
2074    
2075    checkpoint55c_post
2076    o obcs stuff
2077      - new runtime flags useOBCSprescribe, useOBCSbalance
2078      - re-arranged obcs_calc
2079      - moved exf_getobcs to obcs_prescibe_read
2080        obcs_prescibe_read is called after ORLANSKI stuff
2081        and independent of it (executable can contain all).
2082      - updated obcs_check
2083      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2084        These may be necessary only if tangential velocities are
2085        prescribed at OB, not sure, needs testing.
2086    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2087      which simplifies the calls and passes the ifc check-bounds test
2088    
2089    checkpoint55b_post
2090    o add a 2D scalar, Z location, exchange_2 routine.
2091    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2092      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2093      affects advect_cs results (for the wrong reason): update output.txt
2094    o use a more standard discretization for biharmonic viscosity ;
2095     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2096      affects results of dome set-up: update output.txt
2097    o fix gad_advection.F (CubedSphere part), back to version 1.23
2098    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2099    
2100    checkpoint55a_post
2101    o merged code to
2102      * prescribe/read time-dependent open boundaries
2103        (works in conjunction with exf, cal)
2104      * sponge layer code for open boundaries
2105      * each boundary N/S/E/W now has its own CPP option
2106        (healthy for the adjoint)
2107    
2108    checkpoint55
2109    o up-to-date adjoint of previous breaks
2110      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2111      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2112      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2113      - carbon: * remove tr1-related adjoint verification
2114                * add ptracer as control variable
2115    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2116      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2117    
2118    checkpoint54f_post
2119    o in verification/carbin/ remove experiment related to
2120      ALLOW_PASSIVE_TRACER (array tr1 etc)
2121      code_ad/ input_ad/ results_ad
2122    
2123    o add two new packages
2124      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2125        + subject to optimization (memory)
2126      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2127        + subject to reordering (many GOTOs in the original code)
2128        + so far opps is called for every (i,j) point, and then operates in
2129          the vertical; one may want to reorder the scheme in order operate in
2130          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2131          fields)
2132    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2133      - all verification tests compile and run with linux_ia32_g77
2134      - defaults are compatible with current input files--nothing
2135        should change if you were not previously using MNC
2136      - MNC output has been added in numerous places (eg. timeave)
2137        but there are still a few writes not yet do-able with MNC
2138        (this is in progress)
2139      - flags now allow for either/or/both use of MDSIO and MNC and
2140        documentation will soon follow
2141      - numerous small formatting cleanups for ProTeX
2142    o add version info (via BUILD_INFO.h) to MNC and stdout
2143    
2144    checkpoint54e_post
2145    o add two new packages
2146      - pp81 (Packanowski and Philander, 1981), Richardson number and
2147        stratification dependent mixing
2148      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2149      - these scheme operate in a similar manner as KPP (without ghat, of
2150        course), however there is only one diffusivity that is used for both
2151        temperature and salinity (and passive tracers)ç
2152    o add offline package
2153    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2154      provided by Stephanie Dutkiewicz
2155    o genmake2: add ability to search for C compilers and cleanup test output
2156      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2157    
2158    checkpoint54d_post
2159    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2160    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2161      leading to additional shift by 5 days each year of integration
2162       (i.e. leading to considerable offset over the years)
2163    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2164    o start with no AB and no initial filtering (staggerTimeStep):
2165      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2166    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2167      (external loading & cpl import/export stay in forward_step.F)
2168    o update coupling interface to work with new staggerTimeStep
2169    o change MDSIO ptracers_pickup.
2170    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2171    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2172    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2173    
2174    checkpoint54c_post
2175    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2176      this affects (truncation error) output.txt of test-exp:
2177       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2178    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2179    o change Qnet to always be the net heat flux, (+upward).
2180      affects (truncation error) output of natl_box exp.: updated
2181    o define the max number of passive tracers in PTRACERS_SIZE.h
2182    o start to test mnc routinely in exp0
2183    o add sea-ice loading (sIceLoad) as a new forcing field.
2184    
2185    checkpoint54b_post
2186    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2187       impressive on Altix and Opteron systems)
2188    o diagnostics can now write NetCDF files through the mnc package
2189    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2190    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2191    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2192      affects (truncation error) output of lab_sea & natl_box exp.: updated
2193    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2194    
2195    checkpoint54a_post
2196    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2197    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2198    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2199    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2200      + internal_wave (shift in writing cg2d_ini_res)
2201    checkpoint54a_pre
2202    
2203    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2204      - modified verification/lab_sea and natl_box_adjoint accordingly
2205    
2206    checkpoint54
2207    checkpoint53g_post
2208    o prepare splitting of thermodynamics: store convect.counter in common block
2209    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2210      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2211    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2212    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2213    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2214    o restore adjointability
2215    
2216    checkpoint53f_post
2217    o modifications that affect AIM experiment results (update output.txt):
2218      - no advection of S at top interface Nr (pkg/generic_advdiff)
2219      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2220    o AIM pkg:
2221      - include stability function into surf.Flux derivative relative to Tsurf
2222      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2223    
2224    checkpoint53e_post
2225    o merged cylindrical coord configuration
2226    o added rotating_tank experiment
2227    checkpoint53e_pre
2228    
2229    checkpoint53d_post
2230    o faulks upgraded: re-generate output.txt that have changed:
2231       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2232    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2233    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2234    o added Sadourny discretization of Coriolis
2235      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2236      - re-enabled use of omega3 (useAbsVorticity)
2237    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2238      vector-invariant equations
2239      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2240    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2241      hopefully without new bugs
2242      - still to do: biharmonic friction for non-hydrostatic w
2243    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2244    o regenerated output for global_ocean_ebm (using -ieee)
2245    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2246      of mom_common/
2247      - simple re-arrangement of instructions within computing loop
2248    checkpoint53d_pre
2249    
2250    checkpoint53c_post
2251    o new version of coupler for AIM+thSIce and Ocean models
2252     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2253     - land: change Evaporation of snow
2254     - aim with thSIce: fix bug in snow-precip.
2255    o changes to calc_gw.F
2256     - bug fix for w^2 term near the bottom boundary
2257     - (hopefully) improve the lateral slip boundary condtions for use with
2258        partial/looped cells
2259      - because the bug fix changes two verification experiments anyway (exp5
2260        and plume on slope), change the lateral boundary condition from half slip
2261        to the value of no_slip_sides
2262    o ebm package wasnt quite up to the parallel task. Fixed that.
2263    o Adjoint of EBM package + verification
2264      * TLM OK
2265      * ADM not sufficient accuracy yet (needs further testing)
2266    
2267    checkpoint53b_post
2268    o Commiting new energy balance model to repository
2269      * package is pkg/ebm
2270      * verif. is verification/global_ocean_ebm
2271      * references are in ebm_driver.F
2272    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2273    C        Global thermohaline circulation. Part I:
2274    C        Sensitivity to atmospheric moisture transport.
2275    C        J. Climate 12(1), 71-82
2276    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2277    C        Global thermohaline circulation. Part II:
2278    C        Sensitivity with interactive transport.
2279    C        J. Climate 12(1), 83-91
2280    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2281    C        Destabilization of the thermohaline circulation
2282    C        by atmospheric eddy transports.
2283    C        J. Climate 7(12), 1870-1882
2284    o Will need long integration testing.
2285    checkpoint53b_pre
2286    
2287    o created pkg/mom_common in preparation for variable viscosity code
2288    o renamed and split ini_mnc_io
2289    o pkg/land: only liquid water can diffuse or run-off
2290    o AIM using land: soil wetness availability account for snow
2291    o added printMapIncludesZeros to EEPARMS namelist
2292    
2293    checkpoint53a_post
2294    o restore TAMC compatiility for exf_constants.h
2295      (no usage of _d in .h)
2296    o Additional storing in KPP in an attempt to fix
2297      TAMC problem with adjoint of KPP code.
2298      (no success...)
2299      Identical code works fine with TAF.
2300    o Fixed verification/natl_box_adjoint experiments.
2301      Initial conditions for Experiments 4 and 5 are now
2302      set to "SEAICE_initialHEFF=0", which is more reasonable,
2303      and hence gives results closer to that of Experiment 2.
2304      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2305    
2306    checkpoint53
2307    o stable checkpoint with up to date adjoint
2308      TLM tests only run for 1st grdchk at the moment. Its unclear if
2309      this is a code problem or a problem with resetting code for g_
2310      variables that is being autogenerated wrong.
2311      Otherwise:
2312       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2313       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2314         are both still in chaos following their security messes.
2315    
2316    checkpoint52n_post
2317    o various build (mostly genmake2) changes including:
2318      - ability to build/run more easily within Cygwin and MacOS X
2319      - more complicated Makefiles with a stronger dependence on Gnu Make
2320    o pkg/seaice modifications
2321      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2322        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2323        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2324      - changed proxy for geostrophic velocity and updated
2325        verification/lab_sea/results/* accordingly
2326      - removed ADI dynamic solver from pkg/seaice
2327      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2328        they caused a segmentation fault under certain circumstances
2329      - removed unused field WATR
2330    o bug fix in exf-package:
2331      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2332         now reflect that.
2333    o small fixes in the cal-package:
2334      - set reference date to first of January for the 'model'-calendar
2335      - failing of cal_CheckDate in cal_FullDate now actually results in a
2336        warning
2337    o small modifications in exf-package to increase flexibility:
2338      - change climtempfreeze from a constant to a runtime parameter that
2339        is specified in data.exf_clim (default = -1.9)
2340      - introduce runtime parameter windstressmax (default = 2.0) that is
2341        specified in data.exf
2342    o fix in pkg/thsice:
2343      - update Evap (Tsf changes) to be consistent with Latent heat flux
2344      - maintain snow precipitation unchanged (even if Tsf >=0).
2345     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2346    
2347    checkpoint52m_post
2348    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2349      this does not change any of the results, because myIter=0 in swfrac always
2350      lead to jwtype=2 (the default anyway), but the call makes little sense
2351      as a default
2352    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2353    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2354      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2355    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2356    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2357    o extending useSingleCpuIO option to work with new exch2 I/O format
2358      - old-style, missing-tile I/O is still accessible by defining CPP
2359        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2360    o monitor package can write to NetCDF files and/or STDOUT
2361    o fix re-definition bug in MNC_GRID_INIT_ALL()
2362    o doc/api_reference added
2363      - a framework for building an API Reference Manual using all
2364        the "protex" comments embedded in the code
2365      - see pkg/generic_advdiff, pkg/mnc for examples
2366    o MNC:
2367      - make myThid the last argument for all subroutines
2368      - new default for the grid files: NO halos
2369      - add useMNC and other run-time flags
2370      - separate per-file-group handling of the unlimited dimension
2371      - early initialization of MNC w/ flags read at the eeboot stage
2372        and lookup tables set in initialize_fixed
2373      - write all MNC output to a freshly-created directory
2374    o thermodynamics sea-ice (thsice) is now tested with testreport.
2375    o test exp. advect_cs: use the standard cs32 grid ; update output.
2376    o Added functionality to grdchk:
2377      pick global i,j,k position (or nearest wet) where to perform check.
2378    
2379    checkpoint52l_post
2380    o new land formulation:
2381      a) use ground enthalpy as prognostic variable to ensure exact
2382         energy conservation.
2383      b) account for water temperature and for latent heat of freezing
2384         in all processes (rain, run-off, ground storage)
2385      c) compute surface and ground temperature implicitly.
2386    o aim_v23 modification for new land model:
2387      a) Treat separately land / ocean / sea-ice surface fluxes
2388         to allow implicit computation of land & sea-ice surface temp.
2389      b) add snow precipitation.
2390    checkpoint52l_pre
2391    
2392    o fix problem (when 1 tile is empty) in min/max monitor.
2393    o fix bug in timeAve (u,vZetatave in common block)
2394    o no restoring terms under ice for pkg/seaice
2395    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2396    o bug fix for pkg/seaice pickups
2397    o change MNC call locations and add coordinate attributes
2398    o mask vorticity at the corner ; affects global_ocean.cs output
2399    o fix ini_curvilinear_grid ; test CS experiments with mpi
2400    o aim.5l_cs: modify sea-ice fraction input file ; update output
2401    o exf: Adding simple range check routine for exf fields after read
2402    
2403    checkpoint52k_post
2404    o removed top-level directory "diags"
2405      - we migrated these functions to pkg/timeave a long time ago
2406    o fixed bug introduced in pkg/monitor
2407    o accuracy ctrlprec = 32 insuffient for gradient checks using
2408      averaged fields (I/O via cost_averages)
2409      -> use ctrl.h in active_file*.F to control I/O precision.
2410    o paramter list of CALL ADTHE_MAIN_LOOP
2411    o added initial do_the_model_io to ecco
2412    o set all ...Freq to zero after cost_final
2413      taveFreq, dumpFreq, pChkptFreq
2414    o MAIN and ECCO differentiability restored
2415    
2416    checkpoint52j_post
2417    o fix nchklev in tamc.h for global_ocean...
2418    o Bringing flow and store directives up-to-date
2419    o Really weird thing!
2420      call do_the_model_io from the_main_loop with parameters
2421      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2422      TAF places a faulty re-call of initialise_varia
2423      after cost_final call which should not be there!
2424    checkpoint52j_pre
2425    
2426    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2427      error messages
2428    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2429    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2430      debug output
2431    o modfied mdsio_writefield.F to handle non-global files under exch2
2432    o update AIM Cubed-Sphere exp (aim.5l_cs):
2433      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2434    o update AIM Equatorial Channel exp:
2435      use standard aim_v23 pkg and change the SST fields to be more realistic.
2436    o globalFile now works with exch2
2437    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2438      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2439    o limit timeave output for hi-res integrations
2440    
2441    checkpoint52i_post
2442    o removed CPP_EEOPTIONS.h from verification/*/code
2443    o updated the tiling for global_ocean_pressure
2444    checkpoint52i_pre
2445    
2446    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2447      the old pkg/aim).
2448    
2449    checkpoint52h_pre
2450    o shortened offending lines in exch2_send_rx?.template
2451    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2452    o genmake2: add build & execute test for NetCDF code
2453    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2454      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2455    o added useSingleCPUIO flag to monitor.F and mon_out.F
2456    o added temporary hack for sea-ice dynamics on the cube:
2457      metric terms are ignored and it is assumed that
2458      there is no sea-ice on cube faces 1, 2, 4, and 5.
2459    
2460    checkpoint52f_post
2461    o added exch2 cube routines to pkg/exch2
2462    o modified hs94.cs-32x32x5 to use it
2463    o added new grid files to hs94.cs-32x32x5
2464    checkpoint52f_pre
2465    
2466    checkpoint52e_post
2467    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2468      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2469    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2470      to work with implicit vertical advection and AB ;
2471    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2472    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2473     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2474    checkpoint52e_pre
2475    
2476    o fix bug in impldiff when Nr=1 or Nr=2.
2477    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2478    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2479    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2480      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2481    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2482    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2483    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2484    
2485    checkpoint52d_post
2486    o re-tiled many expts to allow comparison in multi-processor mode
2487      - updated output accordingly
2488      - changed hs94.128x64x5 to use intial T from file rather than use the
2489        random number generator
2490    o add infrastructure in model routines for fizhi and gridalt packages
2491    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2492    o changes to permit hi-res, cubed-sphere, configuration
2493      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2494      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2495      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2496        of surface winds for the cube
2497      (A verification experiment, based on global_ocean.cs32x15, but with
2498       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2499       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2500       complete with example surface forcing files and matlab scripts to look
2501       at the output and compare it with that of global_ocean.cs32x15.)
2502    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2503       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2504       to conform to the common rule.
2505    o check-in the first version of the coupler + interfaces for multi-components
2506       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2507       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2508       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2509       - ocean and atmos. share the same horizontal grid (no interpolation).
2510       - exchanges between component and coupler is done in forward_step
2511    o new verification experiment, cpl_aim+ocn:
2512       coupled ocean - AIM atmosphere on cs32 grid.
2513    
2514    checkpoint52d_pre
2515    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2516    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2517    
2518    checkpoint52c_post
2519    o Fixing OPTIONS files for use of exf:
2520      - ALLOW_ECCO not needed
2521      - ECCO_CPPOPTIONS.h should not be included from
2522        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2523        as has been the case in the past
2524      - All cal/exf related options are currently set in
2525        single header file. Should remain so until we
2526        agree on a consistent new policy.
2527    o Removed all CPP options for cal package.
2528      cal has no more CPP options.
2529    o modified STOREs in GAD_ADVECTION
2530    o corrected key comp. for passkey
2531    
2532    checkpoint52b_post
2533    o new version: "thsice" of thermodynamic sea-ice pkg:
2534     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2535     - modify fluxes but do not change theta directly;
2536     - light cleaning of bulk_force pkg (still needed with thsice).
2537     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2538       + output_thsice.txt to test thsice & bulk_force pkgs.
2539    o put back grid & coriolis monitor output.
2540    checkpoint52b_pre
2541    
2542    o call "do_the_model_io" at the beginning (=> dump initial state)
2543    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2544    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2545      (need info on NUMBER_OF_PTRACERS)
2546    o missing PTRACERS headers in some routines
2547    o default tamc.h in pkg/autodiff supposed to crash
2548      to ensure proper customization
2549    
2550    checkpoint52a_post
2551    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2552      - moved surfaceTendencyTice from pkg/seaice to main code
2553      - subroutine FREEZE_SURFACE now limits only surface temperature
2554        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2555        => new output.txt for global_ocean.cs32x15 & global_with_exf
2556      - keep the old version of FREEZE for backward compatibility;
2557        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2558      - corresponding modifs for TAF directives
2559    o added surface flux output variables to TIMEAVE_STATVARS
2560    o time-averaged output for pkg/ptracers
2561    o fix problem with ECCO-related divided adjoint
2562      snapshot file was missing some ad-variables,
2563      but no warning issued by TAF
2564    
2565    checkpoint52a_pre
2566    o some bug fixes for #undef REAL4_IS_SLOW
2567    
2568    checkpoint52 = ecco_c52_e35
2569    o after testing adjoints of checkpoint51u_post
2570    
2571    checkpoint51u_post
2572    o this is the post-merge tag of the ecco-branch
2573      (needs another clean checkout and re-testing)
2574    o various natl_box_adjoint configs and results
2575      but no input fields
2576    o obcs adjoint not yet merged!
2577    o adding ECCO global 1x1 and 2x2 degree configs
2578    o updated/extended some store directives for seaice
2579    o pkg/ecco now containes ecco-specific part of cost function
2580    o top level routines the_main_loop, forward_step
2581      supersede those in model/src/
2582      previous input data.cost now in data.ecco
2583      (new namelist ecco_cost_nml)
2584    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2585    
2586    checkpoint51t_post
2587    o this is the pre-merge tag of the ecco-branch
2588    
2589    checkpoint51s_post
2590    o cleanup: removed various obsolete #define-s
2591    o pkg/grdchk
2592      - renamed 'ph-grd 3' to 'grad-res'
2593      - merged from ecco-branch
2594        (remaining bug fixes for obcs gradient checks)
2595      - additional high-precision output for testreport
2596        (grep for 'precision_grdchk_result')
2597    
2598    checkpoint51r_post
2599    o cleaned up or removed CPP_OPTIONS.h files
2600    o updated results for some of the tests to reflect the new
2601      optfiles (-ieee: -O0 instead of -O3)
2602    
2603    checkpoint51q_post
2604    o cd_code:
2605      - moved cd_scheme.F -> cd_code_scheme.F
2606      - separate read_checkpoint from cd_code_ini_vars.F
2607      - separated cd_code part from write_checkpoint
2608      - updated AD_SOURCE, generated .flow
2609      - added CD_CODE_VARS.h to the_main_loop
2610      - Moving cd_code specific store dir.s to pkg/cd_code
2611    o ctrl package totally restructured
2612      - pack/unpack now optional and decoupled from
2613        xx_/adxx_ I/O
2614      - ctrl_pack/unpack cleaned
2615        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2616      - confined inclusion of AD_CONFIG.h to where necessary.
2617    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2618    
2619    checkpoint51p_post
2620    o create initial cd_code package
2621      - WARNING: the initialization of fields within packages
2622        is broken because INI_FIELDS (where READ_CHECKPOINT is
2623        called) is called *before* PACKAGES_INIT_VARIABLES.
2624        This seems to be backwards since
2625        1) its important to initially zero the entire field including
2626           the "halo" region
2627        2) zeroing needs to be done *before* reading pickup info
2628           and the pickup call might or might not happen in any
2629           particular run
2630      - this needs an overhaul for R2
2631    o cleanup verification/*/code/GMREDI_OPTIONS.h
2632    o cleanup testreport
2633    
2634    checkpoint51o_post
2635    o bringing AD-related verif's up to date with genmake2
2636      - carbon/
2637      - global_ocean.90x40x15/
2638      - hs.94.1x64x5/
2639      - (front_relax/ )
2640    o (more) consistent directory structure for AD-related verif.'s
2641    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2642    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2643    o bug fix in find_alpha.F for MDJWF:
2644      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2645        change rho -> rho-rhoConst
2646      - replace call find_rho to find_rhonum
2647    o initialisation of rFlx extended to full array (required by TAF)
2648      and shifted to thermodynamics
2649    o removed PTRACERS.h in ptracers routine
2650    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2651    o Correcting initialisations for fVerU, fVerV.
2652    o helping TAF to recognize dependency on kUp for
2653      fVerU, fVerV
2654    o Replacing delZ by delR in pkg/ctrl/
2655    checkpoint51o_pre
2656    
2657    o undid all of cp51 pending some cleanups and discussion
2658    o added the [#include "AD_CONFIG.h"] statement to all files that need
2659       it for adjoint/tl #defines
2660     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2661     o removed tools/genmake since it no longer works
2662    
2663    checkpoint51n_post
2664    o modifications to make FREEZE flux visible to pkg/kpp
2665      - moved surfaceTendencyTice from pkg/seaice to main code
2666      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2667      - subroutine FREEZE now limits only surface temperature
2668        (this means new output.txt for global_ocean.90x40x15,
2669         global_ocean.cs32x15, and global_with_exf)
2670    o added surface flux output variables to TIMEAVE_STATVARS
2671    
2672    checkpoint51n_pre
2673    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2674    o added [#include "AD_CONFIG.h"] to all files that use the following
2675      defines:
2676      - ALLOW_ADJOINT_RUN
2677      - ALLOW_TANGENTLINEAR_RUN
2678      - ALLOW_ECCO_OPTIMIZATION
2679    
2680    checkpoint51m_post
2681    o incorporating changes to get TAMC/TAF working in genmake2
2682      - added new TAMC/TAF targets to the Makefile
2683      - various cleanups related to package handling
2684      - these changes should have no impact on the forward model
2685    
2686    checkpoint51l_post
2687    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2688     - faster algorithm for cal_addtime.F
2689     - higher precision arithmetic, where needed
2690     - pkg/exf *startdate variables changed from calendar date to
2691       model integration time
2692    
2693    checkpoint51l_pre
2694    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2695    o enable to apply restoring on S & T only in a latitude band.
2696    o update output (external_forcing_surf modif. change truncation errors)
2697       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2698    
2699    checkpoint51k_post
2700    o change default to: useNHMTerms=.FALSE.
2701     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2702       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2703     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2704        exp1, ideal_2D_oce
2705     - change data file of oceanic exp (leave the results unchanged for now)
2706       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2707    o set gravitySign automatically according to the vertical coordinate used
2708      (and change sign: back to "logical" value: +1 when R increases downward)
2709    o added an include barrier to the default CPP_OPTIONS.h and
2710      removed the #include "PACKAGES_CONFIG.h" from it
2711    o fix a bug in mom_fluxform (from chk51j_post)
2712    
2713    checkpoint51j_post
2714    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2715    o adjusted some flow directives (dynamics, thermodynamics)
2716    o added cubed-sphere case to test cost function
2717    o heckpoint_lev?_directives.h now include
2718      pkg-specific directives, whenever those are enabled.
2719    o Moving pkg-specific flow directives to corresponding pkg
2720      Moving pkg-specific differentiation list to corresponding pkg
2721      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2722      ---> conventions are
2723           - pkg_ad.flow
2724           - pkg_ad_diff.list
2725           - pkg_ad_check_lev?_dir.h
2726    
2727    checkpoint51i_post
2728    o merge of the branch-genmake2
2729      - knowingly breaks the older genmake
2730      - automatic generation of all ALLOW_${PKG_NAME} defines
2731      - new testreport supersedes older testscript
2732    o large number of package inclusion and header cleanups
2733    checkpoint51i_pre
2734    
2735    o new output for adjoin of global ocean vector invariant
2736    o fix for checkpoint of thermodynamic seaice and bulk_force
2737    o Steph gchem various cleanups
2738    
2739    checkpoint 51h_pre
2740    o fixed some single quotes
2741    o modify gchem pkg to be more versatile
2742    o modifications to clean up dic pkg
2743    o add pkg/cfc
2744    
2745    checkpoint51g_post
2746    o provide links for ARPACK and ADM*TLM
2747    o start removing verification/vero/
2748    o update AD-related stuff
2749      (in particular some IF-statements in model/src/ routines)
2750    o adding to verification/global_ocean.90x40x15/ adjoint of
2751      vector invariant setup
2752    
2753    checkpoint51f_post
2754    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2755    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2756      of tracer Green's fucntions for ocean inversion project.
2757    
2758    checkpoint51f_pre
2759    o Added on-the-fly spatial interpolation capability
2760        "USE_EXF_INTERPOLATION" to pkg/exf.
2761      - This is a temporary Cartesian-grid hack until
2762        the super-duper ESMF coupler becomes available.
2763      - See verification/global_with_exf/README for usage example.
2764      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2765        flags and modified pkg/seaice accordingly.
2766    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2767        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2768        non-local transport term.
2769    
2770    checkpoint51e_post
2771    o pkg/mom_vecinv:
2772      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2773      - add time-ave diagnostic of vorticity advection.
2774    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2775    o atmospheric geopotential: - include water vapor effect;
2776                                - use p^kappa in p* scaling.
2777    o land pkg: read initial state from files.
2778    o AIM : add stratospheric drag in the upper level
2779    
2780    checkpoint51d_post
2781    o change function ILNBLNK (=> last non-blank char.) to return zero
2782      (instead of the string length) when the string. char is empty
2783    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2784    o modif's to restore TAMC compatibility
2785      - avoid "_d" constructs in PARAMETER declarations
2786      - avoid interrupting lines by comment lines
2787    o Use cluster local disks for purely local I/O
2788      vs. globally visible disks needed for ctrl stuff
2789      (merged from ecco-branch)
2790      - new active_file_loc... and mdsio_..._loc routines
2791      - affected packages: autodiff, ctrl, grdchk, mdsio
2792    
2793    checkpoint51c_post
2794    o introducing integer flag debugLevel
2795      - debLevZero: suppress all output
2796      - debLevA: standard
2797      - debLevB: equivalent to current debugMode=.TRUE.
2798    o introducing pathname variable mdsioLocalDir for mdsio
2799      that can be specified at runtime
2800      (relevant for cluster I/O to local disk)
2801    `
2802    >>>checkpoint51b_post
2803    adjoint of ptracers
2804    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2805    o extended state in checkpoint_lev?, etc.
2806    o alternative ctrl/cost with tr1 or ptracer
2807    o new comlev1_bibj_ptracers
2808    o new ptracers.flow
2809    o made ptracers_forcing same as external_forcing_s
2810    o added verification for adjoint with ptracers
2811      - adm. grdchk fail so far
2812      - tlm. grdchk OK
2813      - checked tapelev/comlev recomputations: OK
2814    <<<checkpoint51b_pre
2815    
2816    checkpoint51a_post
2817    o added code for biogeochemistry package
2818      - new pkgs: dic, gchem
2819      - new subroutine in ptracers
2820    o modify code for biogeo packages
2821      - in model/src and pkg/ptracers
2822    
2823    checkpoint51
2824    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2825      - autodiff, ctrl, exf, grdchk, seaice
2826      kept separate packages
2827      - cost, ecco, obcs
2828    o updating verification/internal_wave, verification/lab_sea
2829      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2830    
2831    checkpoint50i_post
2832    o Preparing next differentiable checkpoint and sync
2833      of MAIN vs. ecco-branch
2834      - 1st step: this one is differentiable
2835      - 2nd step: next(! not this) checkpoint will have updated packages
2836                  from ecco-branch)
2837    
2838    checkpoint50h_post
2839    o new package "land": provide surface BC for AIM.
2840    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2841    o AIM: use true log-P extrapolation for near surface temp (= as in
2842        F.Molteni paper) ; update aim.5l_cs output.
2843    o New variable in PARM03 for more flexible pickups
2844    o somewhat cleaned package initialisation sequence for
2845      ctrl/ cost/ ecco/ in packages_... routines
2846    
2847    checkpoint50g_post
2848    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2849      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2850      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2851        made the default because of faster convergence than ADI
2852    
2853    checkpoint50f_post
2854    o exf totally restructured
2855      - replaced all exf_set_ routines by one generic exf_set_gen.F
2856        and made sure it's still differentiable
2857      - split exf_getffields.F into new exf_bulkformulae.F
2858      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2859      - updated adjoint/makefile and relevant verif. accordingly
2860    
2861    checkpoint50f_pre
2862     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2863          + change Evap over land. (update aim.5l_cs output)
2864     o added missing .cvsignores and made uniform across expts
2865     o changed configuration of tidal_basin_2d expt
2866     o added pkg/debug functions for tracing code in fatal crashes
2867     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2868     o new fn in pkg/monitor to stop model if solution grows too big
2869     o removed lots of single quotes from comments
2870    
2871    checkpoint50e_post
2872    o make KPP work with PTRACERS
2873     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2874       nearly a copy of kpp_transport_s
2875     - there is no analogue to SurfaceTendencyS, so I have to use
2876       gPtr(of the surface layer) instead
2877    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2878    checkpoint50e_pre
2879    
2880    checkpoint50d_post
2881    o change kpp output from multiple-record state files to single-record state
2882      files analogous to write_state.F
2883    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2884      analogous to the cg2d-related output.
2885    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2886      so that writing to internal file fn (with length 512) fails.
2887    checkpoint50d_pre
2888    
2889    checkpoint50c_post
2890    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2891    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2892    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2893    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2894    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2895    
2896    checkpoint50c_pre
2897    Merging from release1_p13:
2898    o bug fix for pkg/seaice dynamic solver
2899    o Added SEAICE_initialHEFF to pkg/seaice
2900    
2901    checkpoint50b_post
2902    o store u*,v* in gU,V instead of in guNm1,gvNm1
2903    o in order to put the momForcing out of the Adams-Bashforth:
2904      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2905      to timestep.F
2906    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2907    o re-generate output for highly sensitive test-exp:
2908       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2909    
2910    checkpoint50b_pre
2911    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2912    o corrected CPP option mismatch in exf_Bulk... functions for case
2913      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2914    
2915    checkpoint50a_post
2916    o Bug fix for merging between c50 and KPP.
2917      ikey was passed from thermodynamics to kpp_calc via
2918      common block rather than being recomputed in kpp_calc,
2919      in contradiction with new key itdkey.
2920      New key ikppkey created, and tamc.h headers updated.
2921    
2922    checkpoint50
2923    - 2nd step of merge with ecco-branch:
2924      merge changes in ecco-branch back into main trunk
2925    - bug fix in find_alpha
2926    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2927    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2928    - merged some sliced AD support routines
2929    
2930    checkpoint49
2931    merged from ecco-branch:
2932    o exf:
2933      - Enable initialisation of forcing fields to constant
2934        (runtime) values.
2935      - in exf_getffields.F
2936        Reduce i-/j-loop to interior domain, discarding overlaps.
2937        That also fixes wrong TAF-key computations for key_1, key_2
2938        with bulf formulae.
2939      - exf_init.F modify #ifdef for exf_init_evap
2940      - exf_getffieldrec.F, ctrl_getrec.F
2941        The following INT-usages are not safe:
2942          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2943          fldcount = int(fldsecs/fldperiod) + 1
2944        and were modified.
2945    o autodiff: checkpoint_lev...
2946      - updated storing for bulk formulae (some arrays were missing)
2947      - added state for seaice package
2948      - synchronized with main branch
2949    o DIVA:
2950      Modif.s in
2951      - the_main_loop.F
2952      - the_model_main.F
2953      and added cost_final_restore.F cost_final_store.F
2954      o With these changes, it is possible to fully separate
2955        the first forward run to compute the cost function (mdthe_main_loop)
2956        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2957        into separate model executions.
2958        This enables better tuning of DIVA to given queue sizes.
2959      o Loss of cost function value in consecutive DIVA runs is
2960        fixed by storing to 'costfinal' file.
2961      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2962        beginning/end of adjoint integration is accounted for.
2963      The current changes apply to TAF-1.4.26.
2964      TAF has one remaining bug, requiring one manual change
2965      (see MITgcm manual).
2966    o cal: synchronized between MAIN and ecco-branch
2967    
2968    checkpoint48i_post
2969    o Changes to restore differentiability of code w.r.t. previous tag
2970      (mostly adding new routines to make list and replacing
2971      pressure by totPhiHyd).
2972    o Updated and merged grdchk package
2973      - has both ADM and TLM checks
2974      - works for single- and multi-proc.
2975      - output cleaned
2976      - worked successfully for parallel DIVA
2977    o genmake:
2978      - Adding -platform=SP4
2979      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2980    o Modif. for DIVA:
2981      ctrl_unpack should not be called in intermediate DIVA interval.
2982      (similar thing would apply for active files such as
2983      tbar, sbar, psbar, which should not be reinitialised;
2984      only relevant for ecco-branch)
2985    
2986    checkpoint48h_post
2987    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2988    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2989    o Added SEAICE_initialHEFF to pkg/seaice
2990    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2991    
2992    checkpoint48g_post
2993    --- EOS:
2994    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2995      store total Potential in totPhyHyd for diagnostics & EOS.
2996    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2997    --- Pressure/geopotential gradient:
2998    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2999    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3000      ( changes results of global_ocean_pressure )
3001    o NLFS + z-coord.: add eta*Rho' contribution.
3002    o accurate phiHyd when using interface-W at the middle between 2 centers
3003     ( changes results of ideal_2D_oce )
3004    o includes r* 2nd term in potential gradient.
3005    
3006    checkpoint48f_post
3007    Merging from release1_p12:
3008    o Modifications for using pkg/exf with pkg/seaice
3009      - improved description of the various forcing configurations
3010      - added basic radiation bulk formulae to pkg/exf
3011      - units/sign fix for evap computation in exf_getffields.F
3012      - updated verification/global_with_exf/results/output.txt
3013    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3014      (SBO) core products, including oceanic mass, center-of-mass,
3015      angular, and bottom pressure (see pkg/sbo/README.sbo).
3016    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3017      to avoid negative values in shallow regions.
3018      - updated verification/natl_box/results/output.txt
3019      - updated verification/lab_sea/results/output.txt
3020    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3021    o Added useSingleCpuIO option (see PARAMS.h).
3022    o Updated useSingleCpuIO option in mdsio_writefield.F to
3023      work with multi-field files, e.g., for single-file pickup.
3024    o pkg/seaice:
3025      - bug fix in growth.F: QNET for no shortwave case
3026      - added HeffFile for specifying initial sea-ice thickness
3027      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3028    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3029      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3030    o pkg/seaice:
3031      - adjoint-friendly modifications
3032      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3033    
3034    checkpoint48e_post
3035    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3036    o dynamics: change definition of computational domain & adapt mom_fluxform
3037      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3038    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3039        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3040        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3041        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3042        inverted_barometer solid-body.cs-32x32x1
3043      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3044    
3045    checkpoint48d_post
3046    o in preparation for r*:
3047     a) use pre-computed gradient of hydrostatic potential:
3048        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3049     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3050        => affects results of glob_oce_pressure (different truncation error)  
3051      update output.txt of ideal_2D_oce & global_ocean_pressure
3052    
3053    checkpoint48d_pre
3054    o in preparation for r*:
3055      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3056      pass the 2 comp. of the grad. as arguments to momentum S/R.
3057      but for the moment, only used if it does not change the results.
3058    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3059    
3060    checkpoint48c_post
3061    Modifications in treatment of initial flux forcing controls
3062    to avoid extra storing of flux fields.
3063    
3064    checkpoint48c_pre
3065    o Added tidal_basin_2d experiment (currently 1D!)
3066    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3067    
3068    checkpoint48b_post
3069    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3070     (modification to pressure gradient not yet implemented)
3071    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3072      (for U & V) that are used for vertical advection of momentum.
3073    
3074    checkpoint48a_post
3075    o In preparation for r*, use temp. array to compute vertical transport
3076       in flux-form momentum pkg. => change results of few test-exp.
3077      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3078                        lab_sea, natl_box & plume_on_slope
3079    
3080    checkpoint48
3081    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3082    
3083    checkpoint47j_post
3084    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3085    o moved adexch from forward_step to addummy_in_stepping
3086    o added exch in ctrl_map_...
3087    o aveFreq.=0. at end of cost_final to avoid overwrite in
3088      reverse checkpointing loop
3089    o Yet more changes in gmredi:
3090      * adgmredi_calc_tensor
3091        avoiding all recomputation of gmredi_slope_limit
3092      * adgmredi_x/y/rtransport
3093        added flag for excessive storing to avoid recomp. of
3094        u/v/rtans, dTdx/y/z
3095        -> this is not really necessary and very memory-consuming
3096      * adgmredi_slope_psi:
3097        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3098      * gmredi_slope_limit
3099        re-activated full calculation of taperfct for case 'ac02'
3100    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3101    
3102    checkpoint47i_post
3103    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3104    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3105      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3106    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3107    o gmredi: fix few bugs.
3108    
3109    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3110    This will be a good checkpoint to plug into the ecco-branch.
3111    o few modif.'s to get latest version adjointed
3112      (mainly kick out code in ini_linear_phisurf)
3113    o modif's to run adjoint with exactConserv
3114    o case GM_BOLUS_ADVEC should be cleaned
3115      S/R gmredi_slope_psi should be cleaned
3116    o verification/carbon now has exactConserv=.TRUE.
3117    
3118    checkpoint47g_post
3119    o time-average AIM output: becomes independent from statvars time-average
3120      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3121    o After TAF bug fix:
3122      Tested adjoint of gmredi package.
3123      Tests were done with checkpoint47 rather than with latest
3124      checkpoint47f_post since the latter is broken for the adjoint
3125      verification/carbon/ contains both ADM and TLM gradient checks.
3126    Here they are, before they get changed/lost/stolen.
3127    Mostly modif.'s to fix numerical sensitivities.
3128    Gradient checks OK for
3129    - GM_taper_scheme:
3130      * clipping
3131      * ac02
3132      * linear
3133      * glw91
3134      * dm95
3135      * ldd97
3136    - GMREDI_OPTIONS:
3137      * GM_VISBECK_VARIABLE_K
3138      * GM_NON_UNITY_DIAGONAL
3139      * GM_EXTRA_DIAGONAL
3140      * GM_BOLUS_ADVEC
3141    in conjunction with data.gmredi parameters to be checked in
3142    in a few minutes under verification/carbon/code/
3143    
3144    checkpoint47f_post
3145    Merging from release1_p10:
3146    o modifications for using pkg/exf with pkg/seaice
3147      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3148        and SEAICE_EXTERNAL_FLUXES
3149      - pkg/exf CPP options EXF_READ_EVAP and
3150        EXF_NO_BULK_COMPUTATIONS
3151      - usage examples are Experiments 8 and 9 in
3152        verification/lab_sea/README
3153      - verification/lab_sea default experiment now uses
3154        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3155    
3156    checkpoint47e_post
3157    o created a tag prior to creating a branch
3158    
3159    checkpoint47d_post
3160    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3161      at the bottom boundary had an erroneous half slip boundary condition
3162    o added bottom drag and no slip boundary condition capabilities to
3163      oceanic pressure coordinates code
3164    o added new verification experiment global_ocean_pressure, this experiment is
3165      also described in the tutorial section of the manual
3166    checkpoint47d_pre
3167    
3168    checkpoint47c_post
3169    o Added a verification experiment for a global cubed-sphere ocean run
3170      -  verification/global_ocean.cubed32x32x30
3171      -  uses pkg/therm_seaice and pkg/bulk_forcing
3172    
3173    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3174    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3175      when using P-coordinate; only implemented for atmospheric config.
3176    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3177      NOTES: requires option NONLIN_FRSURF to be "#define".
3178    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3179    
3180    checkpoint47b_post
3181    Merging from release1_p9:
3182    o pkg/seaice
3183      - removed GOTO's and added taf directives
3184      - double precision constants to reduce the g77 (Linux)
3185        to F77 (SGI) differences reported in release1_p8
3186    o tools/genmake
3187      - added SGI options
3188    o verification/testscript
3189      - updated to that of checkpoint47a_post
3190    o verification/global_ocean.90x40x15/input/eedata
3191      - modified for SGI f77 compatibility
3192    o verification/lab_sea
3193      - added description of sea-ice model
3194      - added missing matlab routines
3195      - added test of thermodynamics parallelization
3196    
3197    checkpoint47a_post
3198    o new pkg: aim_v23
3199     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3200       for now, keep the same surface forcing as before.
3201     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3202     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3203     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3204    o add diagnostic of surface correction term in monitor output
3205    
3206    o bulk_force and therm_seaice
3207    - Two packages:  bulk_force (Bulk forcing)
3208      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3209    - Earlier integration from Stephaine Dutkiewicz
3210      and Patrick Heimbach.
3211    - Two ifdef statements for compile time,
3212       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3213    
3214    checkpoint47
3215    differentiable version of checkpoint46n_post
3216    o bug fix in quasihydrostaticterms
3217    o * "clean" adjoint code (in terms of extensive recomputations)
3218        can now be obtained for all GMREDI options (i.e. for
3219        - GM_VISBECK_VARIABLE_K
3220        - GM_NON_UNITY_DIAGONAL
3221        - GM_EXTRA_DIAGONAL
3222        - GM_BOLUS_ADVEC )
3223      * However, wrong gradient check problem remains unsolved.
3224      * New CPP options have been introduced for different
3225        tapering schemes
3226    o external_fields_load now part of differentiation list
3227    o pressure needs multiple storing;
3228      would be nice to have store_pressure at beginning or
3229      end of forward_step, e.g. by having phiHyd global (5-dim.)
3230      (NB: pressure is needed for certain cases in find_rho,
3231      which is also invoked through convective_adjustment).
3232    o recomputations in find_rho for cases
3233     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3234    o #define ATMOSPHERIC_LOADING should be differentiable
3235    o ini_forcing shifted to begining of initialise_varia
3236    o Incorporating QNVS line search routines into MITgcm
3237      (this is separate code, and therefore not under pkg)
3238      lsopt/, optim/
3239    o Updated verification/carbon/
3240      - #define GM_VISBECK_VARIABLE_K
3241      - GM_taper_scheme    = 'ldd97'    
3242    
3243    checkpoint46n_post
3244    Merging from release1_p8:
3245    o verification/natl_box:
3246      updating new external_fields_load routine
3247    o New package: pkg/seaice
3248      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3249      The sea-ice code is based on Hibler (1979-1980).
3250      Two sea-ice dynamic solvers, ADI and LSR, are included.
3251      In addition to computing prognostic sea-ice variables and diagnosing
3252      the forcing/external data fields that drive the ocean model,
3253      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3254      The implied surface heat flux is then stored in variable
3255      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3256      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3257      non-local transport term.  Because this call precedes model
3258      thermodynamics, temperature under sea-ice may not be "exactly" at
3259      the freezing point by the time theta is dumped or time-averaged.
3260      N.B.: fairly large differences in accuracy occur across
3261            different platforms/compilers; comparison between
3262            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3263            generated output gives:
3264       T           S           U           V
3265      C D M    c        m  s        m  s        m  s        m  s
3266      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3267      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3268      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3269    
3270      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3271    o GAD:
3272      - generated new common blocks to account for call of
3273        same gad routines with differing traceridentities
3274        (needed to modify tracerIdentity indices in GAD.h)
3275      - generated separate common blocks for case useCubedSphereExchange
3276        (Department of Futurology)
3277      - parameter lists to gmredi_?transport: added tracerIdentity
3278      - added new key indices to tamc.h
3279    o external_fields_load:
3280      - added this routine to TAF list
3281      - needed to make some common blocks global and additional storing
3282        along the same lines as exf package (checkpoint_lev?_directives.h)
3283    o exf:
3284      updated external forcing package
3285      - bug fixes carried over from ecco-branch
3286        (missing OBCS_OPTIONS.h in two routines)
3287      - enable easy to use "no forcing".
3288      - added exf I/O for atmospheric loading
3289      - added exf I/O for runoff data
3290      - transfered scaling between exf <-> MITgcm to exf namelist
3291    o Adding new verification experiment global_with_exf.
3292      This verification experiment is almost identical to the
3293      global_ocean.90x40x15 experiment, except that it uses
3294      the exf (and cal) package instead of the
3295      external_fields_load routine (cf README file).
3296    
3297    checkpoint46m_post
3298    o modified testscript to return -- when there are no lines of "%MON" output
3299    o added new flag "quasiHydrostatic" for QH mode
3300      and new routine quasihydrostaticterms()
3301    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3302      New routine: mom_u_coriolis_nh()
3303    o fixed sign of non-hydrostatic metric terms in u and v equations.
3304      Depend on correct sign of gravitySign.
3305    o added work.pc* to .cvsignore in aim directories using ifc
3306    o introduced flag for controllin non-hydrostatic metric terms
3307    o removed gravitySign from PARM04
3308    o switched to g77/ifc from pgf77 in aim experiments
3309    
3310    checkpoint46l_post
3311    o made convective adjustment work with pressure coordinates:
3312     - changed the direction of k-loop in convective_adjustment.F for the
3313       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3314     - adjusted the reference pressure k-index in convective_adjustment.F
3315     - adjusted the convection condition in convect.F (in analogy to
3316       calc_ivdc.F)
3317     - convective_adjustment no longer computes anything on the halos
3318     - removed the warnings about negative salinity from find_rho.F and
3319       find_alpha.F; instead the new routine look_for_neg_salinity, called
3320       at the beginning of find_rho, find_alpha, and find_beta, does a
3321       check of the entire slice, if CPP-option
3322       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3323    checkpoint46l_pre
3324    
3325    checkpoint46k_post
3326    o fixed the verification/global_ocean.90x40x15 experiment:
3327     - new bathymetry (the world according to A., JMC, and M.)
3328     - new initial fields and forcing fields (*.bin files)
3329     - new POLY3.COEFFS (for the next release one should switch to a full
3330       equation of state: JMD95P or MDJWF)
3331     - fixed several errors and redundancies in the data file
3332     - experiment uses looped cells
3333     - added matlab directory with diagnostic scripts for plotting of output
3334    
3335    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3336     - read AIM physics parameters from a file (data.aimphys)
3337     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3338    
3339    checkpoint46j_post
3340    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3341    o move wVel computation at the end of the time step, in S/R integr_continuity
3342    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3343    o update timeave pkg for wVel diagnostic.
3344    checkpoint46j_pre
3345    
3346    checkpoint46i_post
3347    o Clean up AIM package (and keep the results unchanged):
3348      include CPP_OPTION and use IMPLICT NONE in all routines ;
3349      declare all the variables _RL ; use _d 0 for all numerical constants.
3350      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3351    
3352    checkpoint46h_post
3353    o cleaned up the use of rhoNil and rhoConst.
3354      - rhoNil should only appear in the LINEAR equation of state, everywhere
3355        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3356        and the dynamical equations are all divided by rhoConst
3357    o introduced new parameter rhoConstFresh, a reference density of fresh
3358      water, to remove the fresh water flux's dependence on rhoNil. The default
3359      value is 999.8 kg/m^3
3360    o cleanup up external_forcing.F and external_forcing_surf.F
3361      - can now be used by both OCEANIC and OCEANICP
3362    checkpoint46h_pre
3363    
3364     Added code to convert surface volume flux (fresh water) into
3365     a mass flux when using P coordinates in the ocean (OCEANICP).
3366     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3367    
3368    checkpoint46g_post
3369    o Include a new diagnostic variable phiHydLow for the ocean model
3370      - in z-coordinates, it is the bottom pressure anomaly
3371      - in p-coordinates, it is the sea surface elevation
3372      - in both cases, these variable have global drift, reflecting the mass
3373        drift in z-coordinates and the volume drift in p-coordinates
3374      - included time averaging for phiHydLow, be aware of the drift!
3375    o depth-dependent computation of Bo_surf for pressure coordinates
3376      in the ocean (buoyancyRelation='OCEANICP')
3377      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3378        Theta, Salinity, and Pressure in the parameter list. This routine is
3379        presently contained in find_rho.F. This routine does not give the
3380        correct density for 'POLY3', which would be a z-dependent reference
3381        density.
3382    o cleaned up find_rho
3383      - removed obsolete 'eqn' from the parameter list.
3384    o added two new verification experiments: gop and goz
3385      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3386    checkpoint46g_pre
3387    
3388    checkpoint46f_post
3389    o Enable tangent linear (forward mode) gradient checks:
3390      - extended active file handling to g_... files
3391      - added TANGENT_SIMULATION to theSimulationMode
3392      - extended grdchk package accordingly
3393    o added tangent linear setup in verification/carbon/code_ftl
3394    o added adjoint setup in verification/front_relax/code_ad
3395    
3396    checkpoint46e_post
3397    o Added new equation of state -> MDJWF
3398      - EOS of McDougall et al., 2002, JAOT, submitted
3399      - caveat: the equation of state is only valid for a smaller (more
3400        realistic?) range of values than JMD95P/Z and UNESCO
3401      - added masks to the calculation of pressure in store_pressure
3402      - added more check values for density in check_eos (ini_eos.F), some of
3403        the old check values are out of the range of the MDJWF-eos, so don't
3404        expect perfect matches for those
3405    checkpoint46e_pre
3406    
3407    checkpoint46d_post
3408    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3409      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3410      case of pressure coordinates. eosType='JMD95Z' in
3411      combination with buoyancyRelation='OCEANICP' now causes an error.
3412    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3413      in find_alpha/beta.
3414    checkpoint46d_pre
3415    
3416    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3417      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3418    
3419    checkpoint46c_post
3420    o Changes necessary for ocean in p-coordinates
3421     -  Added new buoyancy relation = 'OCEANICP'
3422     -  Added new parameters = gravitySign (this used to be contained inside
3423        the factor dRdZ which I added when we first switched to R coordinates).
3424     X GM/Redi is not compatible (yet)
3425     X bottom drag and no-slip need to be debugged.
3426    checkpoint46c_pre
3427    
3428    checkpoint46b_post
3429    o Added new equation of state -> JMD95Z and JMD95P
3430      - EOS of Jackett and McDougall, 1995, JAOT
3431      - moved all EOS parameters into EOS.h
3432      - new routines ini_eos.F, store_pressure.F
3433    o Added UNESCO EOS, but not recommended because it requires
3434      in-situ temperature (see JMD95)
3435    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3436      unesco.f to be used with POLY3
3437    checkpoint46b_pre
3438    
3439    checkpoint46a_post
3440    o Added (atmospheric) pressure loading
3441      - new field in FFIELDS.h, etc...
3442      - new cpp flag ATMOSPHERIC_LOADING
3443    o Changed hFacC to _hFacC in calc_phi_hyd.F
3444    o Added SHORTWAVE_HEATING to some files for consistency
3445    checkpoint46a_pre
3446    
3447    checkpoint46
3448    further merges from release1_p5
3449    o new ctrl package
3450      - adopted from ECCO environment to enable optimization
3451      - added Eliassen Palm fluxes to controls
3452    o added Eliassen Palm flux controls to gradient check package
3453    o cost package
3454      - Compatible with new ctrl package
3455      - added Eliassen Palm cost hooks
3456      - modif's of existing cost functions
3457    o Adjoint-related bug fixes in kpp:
3458      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3459      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3460    o autodiff package
3461      - flow directives:
3462        + new for S/R do_the_model_io
3463        + enhanced for S/R checkpoint
3464        + new gmredi.flow
3465      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3466        disable adcommon.h/g_common.h by default.
3467      - fixed problem for adjoint of global_max
3468    o modified verification/carbon/
3469    o New setup for adjoint of global_ocean
3470    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3471    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3472    o incorporated hooks for sponge layer code (external_forcing.F)
3473    
3474    checkpoint45d_post
3475    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3476    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3477      (affects plume_on_slope "cg2d" output)
3478    o add new parameter deltaTfreesurf for free-surface time stepping
3479    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3480    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3481    o change phiMin in exp1 (to agree with documentation)
3482    o add new flags:
3483     - T,S forcing inside/outside Adams-Bashforth
3484     - turn off temp,salt advection and/or forcing
3485     - for each tracer, define internal flag for multiDimAdvection & A-B
3486    o monitor: change definition of KE to check conservation of Energy
3487    
3488    checkpoint45c_post
3489    o Removed f90 comments ("!")
3490    o Modified initialisations to enable exf package for MITgcm
3491      (without invoking ECCO_PACKAGE).
3492    o modifications to gradient check package (Martin Losch)
3493      - enable centered differences
3494      - modified format of standard output
3495    
3496    checkpoint45b_post
3497    o cleaned exchange calls in cg2d
3498    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3499    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3500      to configure barotropic setup (Martin Losch)
3501    o moved some initialisations within bi,bj loop in dynamics
3502      (TAF flow dependency)
3503    o in initialise_varia, moved call packages_init_variables
3504      before convective_adjustment_init
3505      (corresponding adjustment of TAF tape initialisation).
3506    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3507    
3508    checkpoint45a_post
3509    o compute Rho over the whole domain (extend iMin,jMin indices)
3510    o specific exchange for X-slice domain (case Ny=1)
3511    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3512    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3513    
3514    checkpoint44h_post = checkpoint45
3515    o Fix to restore differentiability:
3516      place at which packages_init_variables is called in
3517      initialise_varia is crucial for reverse control flow.
3518    o modifications in GMRedi to enable stable adjoint
3519      (corresponding modif's in thermodynamics, dynamics)
3520    o added missing hook for sponge layer code in external_forcing
3521    o modified test cost functions
3522    o storing in gad_advection (plus removal of write(0,*)!
3523    o missing headers TR1.h added in convective_adjustment routines
3524    o errorMessageUnit set non-equal zero in eeboot
3525      (conflict on some platforms, e.g. IBM SP3)
3526    o modified carbon verif.
3527    
3528    checkpoint44h_pre
3529    o vertical grid option: allow to put the Interface at the middle between
3530      2 cell-centers ; replace delZ in pkg/kpp by drF.
3531    o GM Advective form: Tracers are advected using the residual transport (=
3532      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3533    
3534    checkpoint44g_post
3535    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3536      results) ; ifdef missing in thermodynamics.F
3537    
3538    checkpoint44f_pre,checkpoint44f_post
3539    o added PTRACERS package
3540      This allows an arbitrary number of passive tracers to be integrated
3541      forward simultaneously with the dynamicaly model.
3542      + Implemented so far:
3543        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3544        - I/O and checkpointing
3545        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3546      + Not implemented so far:
3547        - KPP
3548        - OBCS
3549      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3550        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3551        line in data.pkg.
3552      + This package is disabled by default since it increases storage.
3553    
3554    
3555    o testscript: added -cleanup option
3556    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3557                 b) enable to filter 2D fields.
3558    
3559    checkpoint44e_pre,post
3560    o re-wrote convective adjustment to use pre-calculated weights
3561      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3562      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3563      Original calls to convect() still in place.
3564    
3565    chkpt44d_pre,post
3566    o added missing EXCLUDE_MONITOR flags
3567    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3568      (incompatible typ in MIN/MAX expressions caused problems
3569      on IBM SP3)
3570    o in genmake added variable MAKEDEPEND
3571      plus resetting for case SunOS
3572    o added timer_stats.c routine for IBM SP3
3573    o removed variables in dynamics
3574    !!! I forgot to create tag chkpt44d_pre !!!
3575    !!! But chkpt44d_pre = chkpt44c_post    !!!
3576    
3577    o real fresh water flux implemented with non-linear free-surface.
3578    
3579    chkpt44c_pre,post
3580    o few fix (mask in shap_s2, EmPmR in external_field_load,
3581      USE_NATURAL_BCS in solve_for_P);
3582    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3583    
3584    checkpoint44b_pre/_post
3585    o merge of relevant stuff from the ecco-branch:
3586      - genmake: removed $S64 overwrite for case SunOS
3587      - pkg/exf: update and corrections for field swapping and obcs
3588      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3589                  harmonized between ECCO and MITgcm
3590      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3591                      updated checkpointing_lev... lists for obcs
3592      - model/src: minor changes in forward_step, plot_field
3593                   added directive for divided adjoint in the_main_loop
3594      - pkg/mdsio: added mdsio_gl_slice
3595    
3596    o check parameters & config (chkpt44a_pre,post)
3597    o OBC and NonLin_FrSurf.
3598    
3599    checkpoint44
3600    o fix bug in mom_vi_del2uv
3601    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3602    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3603    o update AIM experiments (NCEP input files)
3604    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3605    o added some stuff for AD
3606    
3607    checkpoint43
3608    o added two new advection tests
3609    o added global 4x4 degree ocean test
3610    o added test of H&S94 with free surface on cube
3611    o some final mods for gradient check, adjoint,...
3612    
3613    checkpoint42
3614      Fixed AD-related problems:
3615    o Store directives up-to-date with re-arranged Adams-Bashforth
3616      (mainly thermodynamics.F)
3617    o New store directives for multi-dim. advection schemes
3618      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3619      * new common block and key passkey
3620      (mainly gad_advection.F)
3621    o Modified store directives for split of dynamics/thermodynamics
3622      for the case ALLOW_KPP
3623    o Cleaned argument list for timestep_tracer.F
3624    
3625    checkpoint41
3626    o re-formatted/added comments in prologues of key subroutines
3627      to work with protex
3628    
3629  checkpoint40  checkpoint40
3630  o all changes of checkpoint40pre?  o moved calc_gs, calc_gt and calc_tr1 back to model/src
3631    o added FLT (floats) package from Arne along with demo. experiment
3632    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3633      implementation of forward-in-time forcing terms
3634    o more mods for non-linear free-surface including new variable
3635    o modified multi-dim method to work on cube
3636    o bug fix in KPP (from DM)
3637    
3638    checkpoint40pre9
3639    o added DST advection schemes
3640    o fix MPI bug on SGI's
3641    o modifications for non-linear free-surface
3642    o fixed conditionals for fixed flow/passive tracer only mode
3643    o added tension/strain form of stress tensor
3644    o changes to commenting of arguments for TAF/TAMC
3645    o added/updated many matlab scripts
3646    o added multi-dimensional advection method for tracers
3647      
3648    checkpoint40pre8
3649  o new package rw/  o new package rw/
3650    Added method for dumping intermediate local arrays:    Added method for dumping intermediate local arrays:
3651    mdsio_writetile - same as mdsio_writefield except works from inside    mdsio_writetile - same as mdsio_writefield except works from inside

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