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revision 1.95 by adcroft, Tue Nov 5 19:14:26 2002 UTC revision 1.987 by jmc, Tue May 6 19:02:20 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    checkpoint59q
8    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
9       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
10    o Refresh tutorial_global_oce_biogeo, notably:
11      - change bathymetry (put back seamounts in ACC, use hFacs)
12      - change EOS (POLY3 --> JMD95Z)
13      - use Bryan-Lewis vertical diffusivity
14      - use multidimensional advection
15      - remove old virtual virtual in dic pkg, now done through ptracer pkg
16      - change a couple of parameters in dic pkg
17    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
18    o pkg/obcs: change default to OBCSfixTopo = .true.,
19      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
20      - replace "debugMode" with "debugLevel .GE. debLevB"
21    o implementation of TAF directives for gchem,cfc,dic
22    o remove "exp5" (replaced by tutorial_deep_convection).
23    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
24      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
25      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
26      --> changes results in exp4, seaice_obcs
27    o tutorial_deep_convection :
28      update the set-up and increase resolution and domain size ; start
29      from pseudo initial conditions = output at t=120mn in order to see
30      something happening when running testreport.
31    o pkg/seaice: add os7mp as an advection scheme
32                  add check for advection schemes
33                  add a flag for restoring T and S underneath sea ice
34    o pkg/my82: add netcdf-support and diagnostics
35    o thsice pkg:
36      - Now hsMax limits snow height by turning it into ice following
37        flooding scheme (and now conserving energy)
38      - Slight rewriting of the formula in thsice_calc_thick.F
39      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
40      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
41    
42    checkpoint59p
43    o gchem / dic / cfc :
44      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
45      - add new parameter files: "data.dic" & "data.cfc" ;
46      - various re-arrangement in initialisation & header file ;
47      - fix tutorial_global_oce_biogeo for multi-threaded test.
48    o pkg/dic: test for "pickup_dic" file when restarting ;
49      if no pickup-file, can restart with a re-initialised pH (same as it did
50      before) providing pickupStrictlyMatch is set to False.
51    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
52      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
53    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
54      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
55    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
56     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
57       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
58    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
59       scheme to use for vorticty-term ;
60     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
61       (with default selectVortScheme, return to original discretisation)
62     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
63    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
64    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
65      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
66      also fix diagnostics VISCAHW & VISCA4W.
67    
68    checkpoint59o
69    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
70    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
71      move a few statemens out the main loop into separate loops
72    o pkg/shelfice:
73      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
74        (kg/m^2/s), does not break tests, because in verification/isomip,
75        rhoConstFresh=rhoConst (by accident)
76      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
77      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
78        new file model/src/seawater.F, so that they are available for all pkgs.
79      - convert potential temperature into in-situ temperature. This changes the
80        isomip tests => update tests
81    o add a flag writePickupAtEnd (default=true) to be able to suppress
82      writing a pickup at the last timestep
83    o tools/mpack-1.6 :
84      - disable automake (not working) and autoconf (not needed).
85      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
86        also cleaner with much less compilation warnings.
87    o pkg/profiles:
88      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
89      (for "less than 32 characters name" compiler requirement)
90    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
91      conditions that have a different sampling frequency than S/T/U/V obcs
92    o pkg/diagnostics (stats-diags):
93      - fix global Min/Max in case 1 processor get only empty tiles
94    o genmake2: replace (4 times)
95         make genmake_tc_1.o >> genmake_warnings 2>&1
96      with
97         COMM="$CC $CFLAGS -c genmake_tc_1.c"
98         echo $COMM >> genmake_warnings
99         $COMM >> genmake_warnings 2>&1
100      to make genmake2 always see the value of CC as specified in the optfile.
101    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
102      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
103      - modify verification advect_cs test to test SOM-advection on CS-grid.
104    o pkg/ctrl:
105      - Rewrite of ctrl_map_ini_ecco.F,
106        introducing a generic routine (ctrl_map_ini_gen.F).
107      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
108    
109    checkpoint59n
110    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
111      number in dedicate array "hdiag":
112      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
113        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
114      - many small changes (integer format) for large number of diagnostics
115      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
116        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
117    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
118      usingSphericalGrid, this allows to define the rotated grid coordinates
119      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
120      geographical coordinates according to the inverse of the rotation defined
121      by the Euler angles, so that Coriolis parameter and online-interpolation by
122      exf works with the geographical coordinates on XC/YC/XG/YG.
123      Naturally, this feature does not work with all packages, so some
124      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
125      profiles), because there the coordinates are assumed to be regular
126      spherical grid coordinates.
127    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
128      - introduce isopycnal diffusion coefficient control.
129    o tools/adjoint_options:
130      - additional control vector components.
131    o pkg/mnc: have mnc create marginally meaning full coordinate variables
132      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
133    o pkg/mypackage:
134      - add example of read/write pickup for state-var ;
135      - add entry points to the main code for state-vars diags & write-pickup.
136    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
137      transitions for useExfYearlyFields
138      - add new subroutine that determines the file to read from for
139        use*YearlyFields = .TRUE. and .FALSE.
140      - add a verification experiment to global_with_exf that tests
141        useExfYearlyFields with USE_EXF_INTERPOLATION defined
142    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
143      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
144      subroutines (which could be generated from a template, because they are
145      almost identical), for now they are included in obcs_prescribe_read.F for
146      simplicity
147    o pkg/exf:
148      - add a little more diagnostic to exf_interp_read (in analogy to
149        mds_read_field, can be turned off with debugLevel < debugLevA=1)
150      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
151        ugly but fast by unrolling short inner loops, inserting a unroll=8
152        directive in routine lagran, and splitting a loop and making do while the
153        outermost loop (the latter requires the intoduction of index arrays)
154    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
155    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
156      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
157    o verification/seaice_obcs: updated for restart test and latest options
158    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
159      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
160      for now this is only available for the C-grid code and also within
161      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
162    
163    checkpoint59m
164    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
165      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
166    o gad_som : fix flux output (& diagnostics) to have same units as other  
167      advection scheme fluxes (was previously multiplied by deltaT).  
168    o added verification/seaice_obcs both to test seaice open boundaries
169      and to provide an example matlab scrpt for generating them
170    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
171    o pkg/salt_plume: clean up salt_plume_frac.F to
172      remove redundancy in PlumeMethod 1 and 4
173    o pkg/kpp: added saltplume diagnostics
174    o pkg/obcs and pkg/seaice:
175      - do not set uice and vice to zero when OB*icefile are unspecified
176      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
177      - moved seaice tracer obcs after call to seaice_growth
178    o pkg/salt_plume: added various options for salt plume depth
179      criterion and for vertical distribution of the salt
180    
181    checkpoint59l
182    o pkg/ptracers: new version of ptracers pickup:
183      read meta file and write only fields which are needed to restart.
184      ( same logic as main pickup file ; also using pickupStrictlyMatch )
185    o pkg/seaice:
186      - add timescale for melting due to warm mixed layer as a means of
187        setting SEAICE_availHeatFrac more conveniently
188      - add a CPP-flag/runtime parameter check for flooding algorithm
189      - reformulated availHeat in seaice_growth.F to be independent of AREA
190    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
191      unit changes
192    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
193    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
194      SX vector computer.
195    o pkg/seaice:
196      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
197        seaice forcing fields can now be read only through pkg/exf
198      - removed some unused halos
199    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
200    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
201      or U/VICE from U/VWIND before computing U/VSTRESS
202    
203    checkpoint59k
204    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
205      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
206    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
207      all experiments pass when compile with un-initialised var. checking option.
208    o added pkg/salt_plume
209    o script to test restart (for now, in MITgcm_contrib/jmc_script)
210    o pkg/seaice: new read/write pickup version.
211      read meta file and write only fields which are needed to restart.
212      ( same logic as main pickup file ; also using pickupStrictlyMatch )
213    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
214    o lab_sea.hb87: modify the domain & update output.hb87.txt :
215      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
216      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
217      process. Fixed here by closing the domain at the Northern boundary.
218    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
219    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
220      a set of consecutive levels in/from a 3-D array.
221    o pkg/ptracers:
222      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
223      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
224    
225    checkpoint59j
226    o in pkgs: dic, obcs, offline, rbcs:
227      standard way to compute coeff. for time interpolation between 2 time reccords
228      which retains full precision (& make results less dependent on compiler).
229      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
230    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
231      packages instead of reading ice cover and wind speed separately
232    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
233     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
234      to allow to compile customized code before the update)
235    o cleaning-up:
236      - fix CPP instruction syntax in pkg/obcs
237      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
238        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
239      - fix some threads issue in IO parts.
240    o pkg/dic:
241      - add tons of "_d 0" (--> much better testreports !)
242       and then update outputs of tutorial_global_oce_biogeo
243    o pkg/mom_fluxform:
244      add a special version of momentum advection intended to conserve momentum
245      next to a bathymetry step or a coastline edge. (default = off = #undef)
246    o new read/write pickup version:
247      - for now, only implemented for main (mdsio) pickup file.
248      - write out only what is needed to restart; merge pickup_nh , pickup_ph
249        and main pickup together.
250      - read meta file; read only what is needed to restart; stop if a field
251        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
252        if it make sense (even if the restart is not perfect).
253      - if no meta file, assume that pickup to read corresponds exactly to
254        a pickup that would currently be written.
255      - read pickup written in the old format (until checkpoint59i) if it
256        recognizes an old meta file (no field-list).
257      - add a meta file in exp. which starts from a pickup: 2 cases:
258        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
259         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
260        b) a meta file describing the content of the associated pickup file
261         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
262    o pkg/mdsio & pkg/rw:
263      - new routine to read a meta file ; new set of routine to read
264        Multiple-fields file (with meta file).
265    o added open boundary conditions capability for seaice
266        HSNOW, HSALT, UICE, and VICE
267    
268    checkpoint59i
269    o adjoint:
270      * fix multiDimAdvection adjoint
271        (partial recomputation problem by TAF for fVerT(:,:,kDown)
272        and comlev1 size definition (maxpass vs. max. number of tracers)
273      * verification/global_ocean.90x45x15 adjoint now tests
274        NLFS and multiDimAdvection using DST3 (=30)
275      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
276    o pkg/kpp: add "_d 0" to real constant (if missing);
277      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
278      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
279    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
280      for internal parameters related to restart process (formerly from PARAMS.h)
281      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
282    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
283      as argument. (only atm2d & obcs write_pickup have not yet been updated)
284    o pkg/monitor:
285      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
286      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
287      - account for deep Atmosphere factor and density factor (anelastic)
288    o added open boundary conditions capability for seaice HEFF and AREA
289    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
290      thermodynamics
291      - requires a little reorganization, which affects the testreport results
292        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
293        so that now the conservative form is tested
294      - add a few comments
295    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
296    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
297    o add new diagnostics to seaice: advective, diffusive fluxes (only for
298      multidim-advection, for scheme 2 they are not filled) and transports,
299      thermodynamic growth rates
300    o change units of EmPmR (inside the code, + within coupling interface)
301      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
302      Affects results @ truncation level (cg2d match) and update output of
303       experiments: lab_sea(6), global_ocean.90x40x15(10),
304      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
305      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
306      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
307      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
308    
309    checkpoint59h
310    o pkg/exf:
311      - improve vectorization by moving if-statement out of loops in
312        exf_mapfields, exf_radiation
313      - exf_bulkformulae.F: introduce 2D fields and vectorize code
314    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
315    o testreport:
316      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
317        monitor & update offline_exf_seaice exp. output.
318      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
319    o pkg/seaice:
320      - bug fix in the evp solver: boundary conditions were affected be
321        masking of zMax/zMin (changes results)
322      - minor bug fix in boundary conditions in seaice_calc_strainrates
323        (changes results for no_slip)
324      - seaice_lsr.F: make interpolation of eta dependent on boundaries
325      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
326      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
327        stress formulation and no-slip boundary conditions
328    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
329      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
330    o pkg/seaice: a first HSALT time stepping equation has been checked in
331    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
332      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
333      without requiring DO-IF statements
334    o pkg/thsice:
335      use continuous power-law function for partition of energy between lateral
336      melting/freezing and thinning/thickening ; old code using step function
337      still available with #undef THSICE_FRACEN_POWERLAW
338      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
339    o testreport: change AD testing : check against results/output_adm.txt
340      using same scripts as for forward test.
341    
342    checkpoint59g
343    o adjoint testing: in preparation for changing testreport:
344      - output format: cost and grad written on separated lines
345      - ad output results in directory "results" (instead of "results_ad")
346    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
347    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
348    o pkg/ecco: allow user defined cost function contributions
349    o testreport:
350      Allow to choose (per experiment) the list of tested output variables
351       and the main variable (used to issue a pass/FAIL ) ;
352      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
353      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
354      Also modify printing of summary:
355       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
356       b) echo the list of tested variables in the individual summary.txt of
357          each experiment.
358    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
359      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
360      (but still depend on the tile decompostion of the domain).
361    o pkg/seaice: change a discretization detail to make the B-grid code
362      "more symmetric". This change is likely to remove all "ridges/leads" that
363      where quasi-aligned with the grid in B-grid solutions. It may also be
364      the solution to the stress coupling issues with the B-grid.
365    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
366      remove .cvsignore from input dir. (since testreport no longer run here).
367    o pkg/thsice:
368     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
369     - fix reshaping of sea-ice just after advection:
370       melt all the ice only if ice-volume is too small.
371     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
372       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
373     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
374    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
375      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
376    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
377      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
378      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
379      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
380      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
381      -> update output.txt
382    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
383     this affects truncation error: -> update output.txt of exp:
384      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
385      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
386    
387    checkpoint59f
388    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
389    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
390      a bounded range (in forward mode)
391    o pkg/ecco, ctrl, autodiff and mom_common:
392     internal parameter controls, completements of implementations
393    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
394    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
395      (not seem any difference in testing results).
396    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
397       at face corners.
398    o pkg/generic_advdiff:
399     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
400      loop range indices for computing vertical advection tendency
401      and do the calculation in the interior only (no overlap) ;
402      for now, only implemented for SOM advection (to save CPU time).
403     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
404    o exch2 adjoint
405      First set of changes:
406      - add exch2 hand-written adjoint templates
407      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
408        This will require cleanup in pkg/autodiff/*.F
409        (changed routines currently kept separate in verif. code/)
410      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
411        that used to hide exch2 or cubed-sphere specific code
412        (commented via 'cph-exch2')
413    o pkg/seaice
414      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
415    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
416       output of global_ocean.cs32x15.thsice .
417    
418    checkpoint59e
419    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
420      for B-grid vector (not yet tested) and C-grid vector (<- only used
421      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
422    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
423      (#ifdef ALLOW_SALT_PLUME)
424    o gather_2d/scatter_2d: removed halo regions
425    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
426      scheme and the corresponding test case (under front_relax dir). For now,
427      only available with Skew-flux form and not yet tested in realistic set-up.
428      adjoint: store directives updated, but gradient checks deteriorated,
429      so maybe GM/Redi adjoint is now broken.
430    o seaice adjoint
431      * add AREA, HEFF, HSNOW as control variable
432        (should not change lab_sea results)
433      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
434    o pkg/seaice:
435      * added computation of saltFlux in seaice_growth;
436        For time being, sea ice salinity is assumed constant
437        contribution of snow flooding to freshening of sea ice is neglected.
438        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
439        defaults to 0.0 in order to maintain backward compatibility.
440        Typical values for SEAICE_salinity are 4 to 10 g/kg.
441      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
442      * added SEAICE_availHeatFrac, which specifies fraction of surface level
443        heat content used to melt or grow ice
444      * commented out cap of HICE: it helps keep ice thinner
445      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
446      * applied OBCS T/S mask to HEFFM sea ice mask
447    
448    checkpoint59d
449    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
450     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
451     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
452    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
453     and change default value of parameter "GM_Small_Number";
454     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
455       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
456       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
457    o pkg/ecco: cost function when applying pkg/smooth to controls
458    o pkg/ctrl: add forcingPrecond run time parameter
459    o pkg/seaice:
460     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
461     - fix bug in metric terms of u-equation in LSR solver (implicit part),
462       changes verification/lab_sea
463     - rearrange implicit part of u-equation in LSR solver to make it easier to
464       read, understand, and debug. This causes changes at the truncation level.
465     - fix (serious) bug in the boundary conditions (sign error in the implicit
466       part) of the LSR solver. Changes all LSR results.
467     - fixed problem with HSNOW initialization to avoid thick snow when AREA
468       is initilized with small values - does not change lab_sea results.
469     - added HsnowFile initialization capability
470    o pkg/smooth: addition to model/src and pkg/ctrl so allow
471     initialization of pkg/smooth and application to control vector
472    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
473    o dependencies: pkg/profiles requires pkg/cal
474    o pkg/profiles:
475     - added option ALLOW_PROFILES_GENERICGRID
476         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
477         that interpolation information (grid points and coefficients) is provided
478         within the netcdf input files.
479         -> sample matlab scripts can be found in MITgcm_contrib/gael
480         that allow you to prepare netcdf input files.
481     - also modified: cleaner include statements, cleaner error print statements,
482       cleaner stops when error, and more tests of the netcdf input files consistency.
483    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
484    o pkg/seaice:
485     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
486       requires a new routine: seaice_diagnostics_fill.F
487     - make sure that seaice does not move if not forced (pressure replacement
488       method, Hibler and Ip, 1995), changes results
489     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
490     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
491       It is turned off by default (=-1.), because it changes the results.
492     - make it possible to read AREA from a file, too.
493    
494    checkpoint59c
495    o add S/R and diagnostics for oceanic mixed-layer depth
496    o move GMRedi call after all vertical mixing schemes (including KPP)
497    o pkg/thsice:
498     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
499      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
500    o pkg/obcs:
501     - bug fix for balance code
502    o pkg/seaice:
503      - allow values of SEAICE_elasticParm > 1
504      - add new parameter SEAICE_evpTauRelax as an alternative
505        to SEAICE_elasticParm
506      - make lsr boundary conditions free slip (by default), changes result
507      - add code for no slip boundary conditions for lsr
508      - set minimum of zeta to zero (and not 4e8) (changes results)
509      - add a cap on AREA after advecting AREA if seaice_growth is not called
510    o change calculation of Visbeck K:
511      - no longer depend on tapering scheme; instead, compute slope (limited
512        by GM_maxSlope). this is equivalent to what was comuted before with
513        clipping or linear tappering.
514      - fix vertical averaging (wrong by 1/2 level)
515      - leave the old version (but will not be maintained) within
516        #ifdef OLD_VISBECK_CALC / #endif
517      - update output of exp. ideal_2D_oce
518    o change error catch in calc_r_star to improve vectorization
519    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
520      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
521    o adjoint:
522      Re-organized adjoint checkpointing according to Matt Mazloff
523      (but with modifs/completions/cleanups)
524      Storing is now bundled into large arrays to optimized I/O
525      (and second step in cleanup of the_main_loop)
526    
527    checkpoint59b
528    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
529      - export/import (between ocean & coupler) fields needed for ocean DIC.
530    o pkg/seaice:
531      - get rid of three more exchanges seaice_calc_viscosities (required
532        different loop boundaries in seaice_lsr and seaice_ocean_stress)
533      - bug fix in seaice_ocean_stress (update of lab_sea required)
534      - reduce loop boundaries to necessary minimum also in seaice_evp
535      - go back to the old way of computing deltaC/Z as the adjoint likes that
536        better
537    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
538      passive tracer to an Age Tracer) + update output.txt
539    o pkg/exf:
540      - implement A-grid / C-grid selection for wind-stress input files.
541      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
542      for now, in exf_bulk_largeyeager04.F only :
543      - change implementation for case where windspeed + 2. components wind-stress
544        are read-in. AND use rhoConstFresh to convert evap.
545    o pkg/seaice:
546      - use correct EXCH_UV for wind-forcing (on A-grid).
547      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
548        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
549    o pkg/exf:
550      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
551      EXF_INTERPOLATION:
552      - merge global_with_exf/code version of exf_interp_read.F
553        to the main code ;
554      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
555        reading the file ; Important: This options needs to be defined to recover
556        previous code.
557        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
558      - no longer loose real*8 precision along the way when using exf_iprec=64.
559    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
560      - change discretisation of evp-solver in order to avoid another exchange
561        (changes lab_sea) and clean up a little
562      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
563        help the adjoint (this also changes the results slightly)
564      - add a few "_d 0" where they had been missing in seaice_evp.F
565      - cleaning up: remove unused seaice_calc_rhs.F
566    o pkg/exf: some cleaning-up:
567      - change various "constants" into runtime parameters
568      - cleaned-up Large&Yeager04 routine which should eventually
569        replace exf_bulkformulae.F (changed names of S/R and CPP)
570        and merged various ALLOW_ATM_WIND options
571     only used with thsice pkg (in thsice_get_exf.F):
572      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
573        which are used when useStabilityFct_overIce=TRUE (= the default)
574      - change default values of ice & snow emissivity and scale downward LW
575        by ice & snow emissivity.
576    o pkg/thsice:
577     fix few little problems, in thsice_calc_thickn.F:
578      - growth vertically (and not laterally) if iceFrac == iceMaskMax
579      - melt only laterally if hIce < hThinIce (as the comments say)
580      and in thsice_extend.F:
581      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
582      - start to form ice as soon as the minimum ice-volume is reachable.
583     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
584      and cpl_aim+ocn
585    o pkg/kpp
586     - move computation of surface related input fields to KPP into a new
587       subroutine kpp_forcing_surf.F
588     - remove wrong (within bi,bj loops) EXCH calls.
589     - little cleaning (add argument myThid in last position, cvs header ...)
590     - for now, fix conservation problem by exchanging KPPviscAz (may not
591       be the best fix)
592    o pkg/seaice
593     - check for inconsistent evp parameter/cpp-flag combination
594     - remove leftover errIO flat for obsolete name list error handling
595    o OpenAD
596     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
597    
598    checkpoint59a
599    o pkg/seaice: some parameter clarifications and a little bit of clean up
600    o pkg/thsice: rename run-time parameters:
601       himin       -> hIceMin
602       himin0      -> hThinIce
603       hihig       -> hThickIce
604       i0          -> i0swFrac
605       transCoef   -> bMeltCoef
606       frac_energy -> fracMelting
607      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
608       with default values (for now) that do not change the results.
609      remove old version of thsice vars advection in pkg/seaice.
610    o in FFIELDS.h:
611      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
612      - make pLoad & sIceLoad always available (but still only used if
613         ATMOSPHERIC_LOADING is #define).
614    o pkg/kpp: replaced _KPP_RL with _RL
615    o bug fixes for vertical diffusivity computations when both KPP and
616        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
617        are no longer updating the vertical diffusivity array
618        (passed as argument) but are (re-) setting those arrays.
619    o pkg/seaice: fix bug in evp solver, while doing that
620      - change (improve?) discretization of stress computations for both
621        cgrid-lsr and evp solver
622      - add a new routine to compute strain rates
623      - the above changes lab_sea results
624      - add no slip conditions for evp solver (off by default), lsr-version
625        may follow
626      - fix exchange for shear at Z-points (does not change lab_sea)
627      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
628        (to force the user to pick a time step since there is not "safe" way
629        of choosing it)
630      - add principal stress diagnostics
631      - rearrange fields for evp a little to avoid having to call a: too many
632        exchanges and b: exchanges for stress trensor components which we do
633        not have.
634      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
635        of evp, complete rewrite for lsr case (latter is does not yet work
636        in all cases)
637    o pkg/kpp: add code to have mixing in shelf ice caverns
638      - add myThid to all kpp routines (long overdue)
639    
640    checkpoint59
641    o pkg/exf:
642      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
643        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
644      - move exf header files from lower_case.h to UPPER_CASE.h ;
645        add missing cvs Header & Name
646      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
647      - add namelist param. selectStressGridPosition, exf_monFreq
648      - retire many _CLIM routines, and remove data.exf_clim
649        + params moved to data.exf
650        + climsst, climsss now handled by exf_set_gen, i.e.
651          climss?period=0 refers to constant field,
652          climss?period=-12 to monthly forcing
653      - split up namelists in data.exf
654    o pkg/seaice:
655      - remove seaice_exch and seaice_exch_uv
656      - remove superfluous exchange of theta
657      - add myThid to seaice_budget_ocean/ice
658      - add new interface for atmospheric wind forcing (C-grid only)
659        + new routine
660        + two new field (taux, tauy for stress over ice)
661        + removed one global field (DAIRN) for C-grid case only
662    o pkg/thsise
663      - 2nd set of modifs for thsice adjoint in conjunction with exf
664    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
665    
666    checkpoint58y_post
667    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
668      vertical diffusivity, similar to that in MOM4; turned on using
669      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
670      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
671    o Added capability for 3D specification of background vertical diffusion
672      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
673      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
674      "data" file that contains the 3D vertical diffusivity coefficients.
675    o ice dynamics (pkg/seaice) with thsice thermodynamics:
676      - add code within pkg thsice to advect & diffuse sea-ice fields
677      similar to (and will replace) what has been added in  seaice_advdiff.F,
678      but: - conserving Mass, Heat & Salt.
679           - better when using non-linear advection scheme (not yet fully tested)
680           - can also be used in atmospheric set-up (for now, only the diffusion).
681    
682    checkpoint58x_post
683    o IO option for global-file compact format:
684      - add options when generating topology (utils/exch2/matlab-topology-generator)
685      - add I/O capability (pkg/mdsio).
686      - adapt utils/matlab/rdmds.m to read this format.
687      for now long-line format not yet supported by pkg/mdsio (& exch2).
688    o shelfice: add a few diagnostics
689    
690    checkpoint58w_post
691    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
692      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
693      (and replace horiVertRatio in NH code).
694      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
695                         and tutorial_plume_on_slope (sensitive to truncation)
696    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
697      directly to drive seaice model (C-grid only)
698    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
699     - reintroduce computation of wind from stress,
700     - compute tau (in exf_bulkformulae.F) from windstress averaged to
701       mass points to avoid tau = 0
702     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
703    o rdmnc.m: make it work with "global" files created with gluemnc
704    o rdmnc.m : some improvements in dealing with singleton dimension
705      (tested on all testreport mnc output files).
706    o genmake2: disable pkg/profiles if netcdf test fails.
707    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
708    o move call to cal_readparms up to make calendar parameters/variable available
709      to all packages
710    
711    checkpoint58v_post
712    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
713      useDynP_inEos_Zc tested.
714    o pkg/exf: changes to properly interpolate/mask/scale initial fields
715    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
716      and portions thereof.  See read_cs.txt for description and examples.
717    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
718      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
719      following the great-circle arc between those 2 points.
720    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
721      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
722    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
723     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
724     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
725     - still needs work (not working with some options ; efficiency to improve)
726       and serious testing.
727     - use this scheme for temperature & salinity in 2 advection test exp.:
728       advect_xy & advect_xz, respectively.
729    
730    checkpoint58u_post
731    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
732    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
733    o testreport: add option "-skipdir" to skip some test.
734    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
735      momentum calculation.
736    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
737    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
738      remove checkpoint.F and the_correction_step.F (no longer used);
739      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
740    o add option (linFSConserveTr) to correct for tracer source/sink due to
741      Linear Free surface
742    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
743    o pkg/thsice: fix reading mnc-pickups
744    
745    checkpoint58t_post
746    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
747    o pkg/mdsio:
748     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
749       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
750       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
751     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
752     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
753       either MDS_READ_FIELD or MDS_WRITE_FIELD )
754     - new S/R (to replace MDSWRITEMETA), which allows to write more
755       informations (variable names, time ...) to meta files.
756     - modify rdmds.m to give back the meta file content.
757    o pkg/diagnostics: change vertical interpolation to be safer, and more
758       flexible (define p-levels to interpolate to in data.diagnostics);
759      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
760       diagnostic pointer.
761    o pkg/seaice: more cleaning up of seaice_growth, added many comments
762    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
763    o fix multi-category seaice:
764     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
765       SEAICE_MULTICATEGORY
766     - fix short wave heat flux
767    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
768       and allow to use EVP solver. Change forward lab_sea: test both EVP
769       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
770    o Initial check-in of lab_sea adjoint
771      (very similar to natl_box_adjoint/code_seaice)
772      * used C-grid and EVP solver
773      * used KPP, GM/Redi
774      * uses inAdExact=.TRUE.
775      * gradient checks fail for both ADM and TLM
776        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
777        f.d. gradients actually seem more problematic than ADM, TLM gradients;
778        issue is related to forward mismatch between g77 an ifort
779    o pkg/seaice: overhaul of thermodynamics
780     - growth.F and groatb.F are replaced by new routine seaice_growth.F
781     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
782     - move a few global fields out of SEAICE.h into seaice_growth.F and
783       make them 2D (FICE/QNETO/ ...)
784     - remove FO (it is the same as QNETO)
785     - introduce a few local fields to avoid modifying external fields such
786       as atemp, etc.
787    
788    checkpoint58s_post
789    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
790      changed exf_set_gen.F so that
791        genperiod=0 means input file is one time-constant field and
792        genperiod=-12 means input file contains 12 monthly means
793    o CG2D: use pre-computed solver main-diagonal (stored in common block);
794      this affects truncation error ; generate new output file for exp. which
795      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
796        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
797        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
798        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
799        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
800        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
801    o start implementation of deep-atmosphere and anelastic formulation
802    o verification: remove 2nd copy of input files and use script "prepare_run"
803      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
804    o mom_common/vecinv/fluxform: fix a few initialisation isssues
805    o profiles: fix for multithreaded case
806    
807    o diagnostics: rename few diags:
808      s/'PRESSURE'/'RCENTER '/g
809      s/'TICE    '/'oceFreez'/g
810      s/'TAUX    '/'oceTAUX '/g
811      s/'TAUY    '/'oceTAUY '/g
812      s/'SWFLUX  '/'oceQsw  '/g
813      s/DIFx/DFxE/g
814      s/DIFy/DFyE/g
815      and add few ocean-forcing diagnostics:
816      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
817    o modifications to pkg/seaice/growth.F and budget.F, which change results of
818      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
819      as actual snow thickness.  It now refers everywhere to effective snow
820      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
821    
822    checkpoint58r_post
823    o modifications to pkg/seaice/growth.F, which change results of
824      lab_sea experiment: fixes pertain to melting snow over open water, to
825      masking EVAP under sea ice, and to using the correct AREA variable for
826      computations of EVAP, PRECIP, HSNOW, and GHEFF
827    o add ability to read bathy, salt, and theta using MNC (off by def)
828    o add flooding algorithm and advection of HSNOW for pkg/seaice;
829      both are turned off by default and do no change any results
830    o seaice advection with pkg/thsice: a step toward the use of non-linear
831      advection scheme, but #ifdef or commented out for now (requires more EXCH).
832    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
833      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
834      in natl_box (affects results @ truncation level: update output.txt)
835    o multi-threading and IO:
836      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
837      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
838        (needed to work with SingleCpuIO): tested in all verif. exp.
839    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
840      affects the results (but none of the verification test uses this scheme).
841    o Adding some pkg/diagnostics capability to pkg/seaice
842      (will certainly be subject to changes)
843    o ctrl: adding new control variables:
844      lwflux, lwdown, evap, snowprecip, apressure, runoff
845    
846    checkpoint58q_post
847    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
848      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
849      high_res_cube configuration by 4% on Columbia.
850    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
851      add (in global_with_exf/code) a version of EXF_INTERP_READ without
852      dynamical allocation (seems to work in multi-threaded).
853    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
854      single CPU io) so that TAF does not have to see EESUPPORT.h
855    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
856    
857    checkpoint58p_post
858    o obcs: stop if obcs is used with useCDscheme = .true.
859    o shelfice:
860     - fix a sign error so that no slip at shelfice interface works
861     - remove stop for combination non-hydrostatic code and shelfice. That does
862       not mean, that the results are correct, but at least they are numerically
863       stable
864    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
865    o added adjoint exch routined for all exch*3d* routines
866      and updated flow directives
867    
868    checkpoint58o_post
869    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
870      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
871    o change controling S/R for writing pickup file (new S/R do_write_pickup)
872      and clean-up reading/writing of pickup files.
873    o fix local version of read/write pickup (NH part) in rotating_tank/code
874    o simplify EXCH interface:
875     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
876     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
877    o added the regrid package
878    o shelfice:
879     - add a simple boundary layer scheme to reduce noise
880     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
881    
882    checkpoint58n_post
883    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
884       local variable (not in common block).
885    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
886      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
887      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
888        to work with SingleCpuIO.
889    o add "_d 0" to real constant of pkg/cfc subroutines ;
890       update exp. cfc_exemple & tutorial_cfc_offline output files.
891    o multi-threading and IO:
892      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
893        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
894      - barrier before and after reading.
895      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
896      - avoid using MDS_WRITELOCAL for LAND pkg output.
897      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
898        common-block variables ; Allows multi-threading with master-thread IO.
899    o change default MAX_NO_THREADS from 32 to 4 ;
900      and stop cleanly when MAX_NO_THREADS is too small.
901    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
902    
903    checkpoint58m_post
904    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
905       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
906    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
907       keep global_ocean.90x40x15 (for AD testing) with former secondary test
908       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
909    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
910        add MITgcm_tutorials (= code + all the tutorials)
911    o ecco, option to compute cost for total ssh (mean+anom)
912    o consistent with addition of ptracer and ssh in pkg/profiles
913    o profiles: adding ptracer and ssh
914    o testreport: change multi-test output-file name
915      (from output.txt.{name} to output.{name}.txt)
916    o profiles: now ok for mutli-tiles case
917    o seaice: add 4 parameters for different advection schemes for area,
918      (effective) seaice thickness, enthalphy, and snow height. Their default
919      is the standard parameter SEAICEadvScheme
920    o calc_gw:
921     - add cosFacU in zonal viscous flux (harmonic.visc.).
922     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
923       of tutorial_plume_on_slope.
924    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
925    o calc_gw: true flux-form, account for horizontal grid spacing.
926      update rotating_tank results, but not plume_on_slope (affected at
927      truncation level, 11 digits).
928    
929    checkpoint58l_post
930    o calc_gw:
931     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
932     - remove side-drag for now (need to fix it); update plume_on_slope results.
933     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
934    o commit code to make SST/SSS weights spatially variable
935      (based on either variable in-situ or variable initial T/S weights)
936    o pkg/ecco:
937      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
938        now based on horizontally varying weights wthetaLev, wsaltLev
939      * cost_averagesflags now returns year indices in addition to day, month
940      * sflux balance is performed on annual basis
941        (sflxumm, sfluxmm2, bal_sfluxmm)
942      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
943        including separate counting and multipliers
944    o pkg/rbcs
945      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
946    
947    checkpoint58k_post
948    o testreport:
949     - always build in dir. "build" (if not there, mkdir build instead of building
950       & running in input)
951     - run in dir run (if it exists), in build otherwise.
952     - call prepare_run (if input/prepare_run exists)
953     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
954    o pkg/exf modifications to interpolation and rotation routines for more
955       reasonable treatment of North Pole singularity: for tracers North Pole
956       value is set to northernmost zonal-mean value, for zonal velocity it is
957       set to zero, and for meridional velocity it is set to northernmost value.
958    o pkg/exf/exf_check_range.F
959     - add tile index to diagnostics and move stop statement to the very
960       end of the routine.
961    o pkg/diagnostics: (diagnostics_main_init.F)
962      define title of isomorphic variables according to the current config.
963    o pkg/thsice with pkg/seaice dynamics:
964    - fix domain of computation (interior only, required for exf) and do exchanges
965    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
966    o towards a standard way of dealing with multi-threading in MONITOR
967      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
968    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
969       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
970    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
971    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
972    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
973       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
974    o tracer advection:
975     - clean-up and simplify calc_common_factors.F
976     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
977       advection subroutine (but still not used within DST advection S/R)
978    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
979    
980    checkpoint58j_post
981    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
982      from file (collects calls previously in FORWARD_STEP)
983    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
984    o adjoint store dir. adjusted accordingly
985    o genmake2
986      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
987    
988    checkpoint58i_post
989    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
990      on wind stress (SEAICEstressFactor defaults to 1.)
991    o Total number of Timers is finite (<=40): comment out 2 non-essential one
992      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
993    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
994      on CS-grid: no longer loosing mass.
995    o exf & curvilinear-grid: no longer modify longitude xC & xG.
996    o pkg/ggl90: fix sloppy output and fix a bug
997    o pkg/seaice: added SEAICEuseEVPpickup parameter
998      - Set to false in order to start EVP solver with
999        non-EVP pickup files when using SEAICEuseEVP
1000      - fix sign error in diffusion in seaice_calc_rhs
1001    
1002    checkpoint58h_post
1003    * Modifications for bottom topography control
1004      o replace hFacC by _hFacC at various places
1005      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1006      o add non-self-adjoint cg2d_nsa
1007      o update autodiff support routines
1008      o re-initialise hfac after ctrl_depth_ini
1009      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1010    * Adding verification for 5x5 box (4-layer) bottom topography control
1011    
1012    checkpoint58g_post
1013    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1014       used for mean seasonal cycle, mean diurnal cycle); add an example
1015       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1016    o pkg/ggl90:
1017      - add parameter (minimum surface kinetic energy)
1018      - fix bug (avoiding division by zero)
1019    o couple pkg/thsice to pkg/seaice:
1020      - modify advection in seaice to accomodate new scalar fields to be advected
1021      - only muliDimAdection scheme work with seaice/thsice
1022      - mapping of thsice-variables to seaice-variables, back and forth
1023      - does not break the verification experiments, but does not give the
1024        desired results either
1025    o pkg/seaice
1026      - make (default) second order advection a bit less confusing?
1027    
1028    checkpoint58f_post
1029    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1030      to pkg/seaice):
1031      - new routines thsice_map_exf and thsice_get_exf provide the interface
1032      - add an additional formal parameter to thsice_solve4temp
1033    o pkg/exf:
1034      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1035      - correct Stefan-Boltzmann constant
1036      - new parameter for longwave surface emittance
1037      - separate some stuff from exf_bulkformulae into new routines  
1038        exf_radiation, exf_wind
1039      - add new parameters and constants: longwave emissivity for ocean, ice
1040        and snow, evaporation parameters over ice
1041      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1042        either wind from stress or stress from wind
1043    o pkg/thSIce:
1044    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1045    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1046       and THSICE_CALC_THICKN
1047    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1048    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1049      to make debugging easier.
1050    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1051    o pkg/bulk_force:
1052      - clean-up comments and parameters ;
1053      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1054    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1055      generate new output for test-experiment: aim.5l_cs.thSI
1056    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1057      testreport accordingly
1058    
1059    checkpoint58e_post
1060    o SEAICE_CGRID adjoint done
1061    o R_STAR adjoint implemented.
1062      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1063      * need to sort out init. of h0facc, etc.
1064    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1065      to be able to use it in pure forward.
1066    
1067    checkpoint58d_post
1068    o upgrade simple test-experiment to tutorial example:
1069     step.1: duplicate the experiment and (step.2) will remove the old copy.
1070      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1071      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1072      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1073      tutorial_global_oce_biogeo    <- copy of dic_example
1074      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1075      tutorial_plume_on_slope       <- copy of plume_on_slope
1076      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1077      tutorial_global_oce_optim     <- empty for now (David ?)
1078      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1079     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1080    o correct a sign problem in cost_scat.F
1081    o obcs and ptracers: fix boundary conditions for advections schemes
1082      with larger stencil
1083    o thsice adjoint: start
1084    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1085      completeness
1086    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1087      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1088    o ptracers adjoint:
1089      * avoid extensive recomputatations
1090      * fix missing re-init. of gptr (missed by TAF)
1091    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1092      me to turn off the excessive output to STDOUT that this package produces
1093    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1094      and add those terms in Vector-Invariant formulation.
1095    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1096      if the control period (xx_hfluxperiod etc) is 0
1097    o in profiles pkg, clean routines and fix details
1098    o in ecco pkg, reading ssh data:
1099      fix problem in case the model does not start at iter0=0
1100    o fix mnc-pickup/restart for ptracers
1101    o new package prifiles:
1102      code to compute profile-based cost by Gael Forget
1103      (modifs in ecco, ctrl, autodiff)
1104    o Benign bug fix in initialization (spotted by M. Mazloff) of
1105      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1106    
1107    checkpoint58c_post
1108    o adjoint: finish NLFS adjoint and provide reference output in
1109      verification/global_ocean.90x40x15/results_ad_nlfs
1110    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1111      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1112      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1113      with SEAICE_CGRID defined.
1114    o move calendarDumps from "data" to "data.cal" and clean-up the code
1115      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1116    o add useEXF & useCAL flags (for now, set in hard-coded way)
1117    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1118      (were missing in NH mode, and wrong in quasihydrostatic mode).
1119      waiting for Chris updated version of calc_gw to add those CALLs.
1120    o fix bug in quasihydrostatic S/R ;
1121      add a test for this option: global_ocean.90x40x15.qshyd
1122    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1123      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1124    o add on/off flag useOffLine for package OFFLINE
1125    o seaice:
1126      - modify advection so that it works also on the C-grid
1127      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1128        problem in multi-tile runs with C-grid
1129      - add flags for clipping ice velocities and/or masking solver forcing
1130      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1131        C-grid solver
1132      - added a few comments to seaice_diffusion.F
1133      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1134        are now exclusive)
1135      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1136        required re-ordering the code a little:
1137       + make DAIRN global variable (defined in SEAICE)
1138       + move computation of the viscosities eta and zeta into a new separate
1139         routine (because I need to recompute them in seaice_ocean_stress.F)
1140    
1141    checkpoint58b_post
1142    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1143      update output.txt of exp. aim.5l_cs.thSI
1144    o various mnc cleanups and improvements:
1145      + shrink lookup tables by factor of ~4
1146      + better error reporting when running out of lookup space
1147      + able to handle longer path/file names (up to 500 chars)
1148    o adjoint:
1149      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1150      - TBD: "hidden" mom_vecinv recomp. in dynamics
1151    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1152     (allow to differentiate between forcing components using new integer flags:
1153      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1154     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1155    o ecco
1156      - enable trend removal from SSH anomaly obs.
1157    o adjoint
1158      - a fix for PmEpR when #undef EXACT_CONSERV
1159      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1160      - try to fix "hidden" recomp. in forward_step for NLFS
1161        (NLFS seems broken sometimes after I checked it in)
1162    o seaice:
1163     - add c-grid version of the dynamic solver:
1164       + three new routines that are the c-grid substitute lsr, dynsolver
1165         and ostres
1166       + put a few fields that were local to dynsolver into global common
1167         blocks, so that I can move the computation of stresses etc into
1168         seaice_lsr (saves coding but may break the adjoint).
1169     - replace more hardwired parameters by runtime parameters
1170     - add ice masks that mask the rhs of the implicit solvers where there
1171       is no ice (commented out in seaice_dynsolver, because i am not sure
1172       if this works properly), eventually this should replace the clipping
1173       of ice velocities in seaice_dynsolver to +/-40cm/s.
1174    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1175      include it only where its needed
1176    o move balancing of fluxes before the call of external_forcing_surf
1177    o seaice:
1178      - correct units of turning angles (now they are really in degrees)
1179      - move computation of GWATX/Y out of main routine into dynsolver
1180      - initialize GWATX/Y in seaice_init
1181    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1182      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1183    o seaice: add runtime flags for turning angles (default to zero)
1184    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1185      and trend from exf forcing and ctrl control adjustments
1186    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1187      (since checkpoint57x_post)
1188    o change the default rotation period to 86164.s = the Earth rotation
1189    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1190      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1191    o seaice advection: add code for choosing between the default (2nd order
1192      central differences) and multiDim advection schemes provided by
1193      pkg/generic_advdiff
1194    o seaice:
1195      - removed all references to SEAICE_GRID.h fields from
1196        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1197        (cubed-sphere configuration will change a little)
1198      - grid computations in seaice_init are obsolete now.
1199      - cleaned up code a little so that is easier to read (hopefully).
1200      - added new (better?) discretizations of default advection and diffusion
1201        (turn on with SEAICEuseFluxForm)
1202      - replace 1 in 3d global fields by kSurface in growth.F
1203      
1204    checkpoint58a_post
1205    o seaice:
1206      - bug fix in advect.F
1207    o shelfice:
1208      - separate shelfice load anomaly from pload (breaks with time
1209        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1210        Its default is 0., but it may be computed more cleverly from (unknown)
1211        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1212        done offline. A good approximation of the pressure load anomaly is
1213        necessary to avoid large initial adjustment processes underneath
1214        deep-reaching shelfice.
1215      - small fix in ISOMIP shelfice_thermodynamics
1216      - add more sophisticated thermodynamics of Hellmer (1989), this is
1217        now the default
1218      - give a few constants more intuitive names
1219    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1220      if bulk formulae are used in long integration (especially EmPmR). Turn
1221      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1222      if balancePrintMean, the imbalance that is substracted is printed to
1223      STDOUT.
1224    o fix bug (typo) in obcs_apply_eta.F
1225    o add a new package shelfice which enables us to model the circulation
1226      underneath shelf-ice with draughts of hundreds of meters.
1227     - works
1228     - to do: + include improved thermodynamics
1229              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1230                instead of new field kTopC
1231              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1232                instead of new field R_shelfIce and new code in ini_depth.F
1233                and ini_mask_etc.F?
1234              + adjust vertical mixing schemes?
1235    o seaice pkg:
1236     - add a cpp-flag to include a simple formula for a salinity dependent
1237       freezing point of sea water at the surface
1238     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1239       meridional stresses are now different (and hopefully correct)
1240    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1241       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1242       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1243    o pkg/diagnostics: add options and parameters for regional-statistics
1244       diagnostics ; define regions by reading a region-mask from a file
1245       (might add other options later)
1246    o pkg/bulk_force:
1247     - add option and parameters to use AIM surface-flux formulae.
1248     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1249       others forcing fields (defined in PARM05, parameter file "data") are loaded
1250       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1251     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1252     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1253     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1254       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1255     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1256    
1257    checkpoint58
1258    o add "--embed-source" option to genmake2 which, when the supporting
1259      tools can be compiled (as determined by genmake2) will turn on the
1260      embed_files package which then embeds the entire MITgcm source code
1261      (*.[fFhc] + Makefile) used for the build within the executable
1262      - requested by CNH but off by default
1263      - adds a paltry <9MB to the mitgcmuv executable in most cases
1264      - only writes the output when useEMBEDSRC in eedata is true
1265    o clean up 3-dim. relaxation codes:
1266      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1267      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1268      * Thanks to Tom Haine for testing!
1269    
1270    checkpoint57z_post
1271    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1272      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1273    o fix the pickup behavior for obcs in combination with ptracers
1274    o fix a bug in ptracers_external_fields_load
1275    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1276      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1277    o transfered surface NH pressure to eta field (if exactConserv).
1278    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1279         and update lab_sea output.txt file.
1280    o completing 3-dim. relaxation code: additional term
1281         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1282      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1283      * At compile time, in "EXF_OPTIONS.h" set
1284          #define  ALLOW_CLIMTEMP_RELAXATION
1285          #define  ALLOW_CLIMSALT_RELAXATION
1286      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1287          tauThetaClimRelax3Dim = 15552000.0,
1288          tauSaltClimRelax3Dim  = 15552000.0,
1289      * 3 cases:
1290          1) Use a constant-in-time 3-dim. field
1291          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1292          3) Real-time relax. to time-evolving prescribed field
1293    o Adding Laplacian-type smoothness constraint on
1294      initial and boundary (forcing) controls (ic, bc)
1295      * enable at compile-time via
1296        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1297      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1298      * Absolute scale somewhat unclear so far
1299      * no area weighting was included since no other cost term does so far
1300    
1301    checkpoint57y_post
1302    First step for a NLFS adjoint
1303    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1304    o new init. routines for calc_r_star, calc_surf_dr
1305    o still need to deal with ini_masks_etc
1306    o testreport seemed happy
1307    checkpoint57y_pre
1308    
1309    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1310    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1311    o add new offset feature to offline pkg (plus minor cleanup)
1312    o cfc fixes for final year of integration
1313    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1314      be in GCHEM_OPTIONS).
1315    
1316    checkpoint57x_post
1317    o fix testreport Pb in multiple test experiment.
1318    o cleanup our namelist syntax in verification:
1319      - make it more F95 standards compliant (some work still needed)
1320      - allows the vast majority of our tests to work with gfortran
1321    o Non-Hydrostatic:
1322     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1323     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1324    o Allow to apply AB on T,S rather than on AB(gT,gS):
1325     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1326     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1327       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1328     - need a "clever" read_pickup to restart from the other AB formulation
1329    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1330    o remove some unused variables (reduces number of compiler warnings)
1331    o adjoint
1332      * Disable useVariableViscosity for adjoint for time being
1333        (there are a number of extensive recomputations)
1334      * Initialize certain variables needed for adjoint
1335    
1336    checkpoint57w_post
1337    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1338                 fix the singleCpuIO RS version of MDSWRITEFIELD
1339       and add a WARNING if using globalFiles=T with multi-processors.
1340    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1341      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1342    o tracer advection scheme:
1343      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1344       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1345       was not very convenient).
1346      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1347       (further tests needed for the implicit DST & Flux-Limiter schemes).
1348    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1349      and sRef for convenience, handy, when you want to initialize
1350      ptracers in a large domain with a constant non-zero value. Also,
1351      untangle ptracers_init.F a little.
1352    
1353    checkpoint57v_post
1354    o change dome exp. to use variable viscosity in side-drag terms.
1355    o remove all the files from the cfc_offline test since they are now
1356      incorporated into tutorial_cfc_offline which has been producing
1357      identical results for a few days of testing
1358    o add new parameter: sideDragFactor to enable half-slip-side BC
1359      and change side-drag S/R to use viscosity from mom_calc_visc
1360      (can switch back by setting sideDragFactor=0.); affects results at
1361      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1362       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1363    o vorticity & strain are now computed without masking, to account for
1364      no-slip-side BC in variable viscosity calculation ; mask is applied
1365      anyway later on, before computing advection/coriolis terms.
1366    o modify exp4 to test new obcs support for reading from external files
1367      and for passive tracers
1368    o fix behavior of ptracers_monitor when monitor output is written to a
1369      netcdf-file; still not independent of monitor.F (writes in the same
1370      file).
1371    o change default value of tRef (put a uniform, meaningful value for ocean
1372      & atmos) and initialize sRef (was missing, as Martin mentioned).
1373    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1374      to be proportional to enstrophy dissipation length.  Thus,
1375       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1376      This is now consistent with Smagorinsky and with the manual.
1377    
1378    checkpoint57u_post
1379    o OBCS and PTRACERS: add open boundary support for passive tracers
1380      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1381        OB-values from file; this is not different from the way theta and salinity
1382        are treated
1383      - however, Orlanski-radiation conditions are not supported, and the model
1384        will stop if you use pTracers and Orlanski at the same time.
1385      - beefed up the rountine obcs_external_fields_load: now only those open
1386        boundary values are overwritten with values from files for which there
1387        are really files, otherwise the OB-fields remain untouched. This makes
1388        it possible to use different OBs at different ends of the domain (as
1389        with EXF)
1390    o reduce number of exch calls in shap_filt (s2).
1391    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1392      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1393    
1394    checkpoint57t_post
1395    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1396    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1397      same truncation, independent of the face number: affects affects several
1398      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1399    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1400      note that biharmonic viscosity + no-slip was not tested in any experiment.
1401    o fix bug in non-linear free-surf side-drag ; generate new output for
1402      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1403    o make mnc honor the writeBinaryPrec flag for most kinds of output
1404    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1405    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1406      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1407    o add brackets in multi-terms sum to get same truncation, independent of
1408      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1409      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1410    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1411      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1412      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1413      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1414      Suggested values of viscosity parameters found in mom_calc_visc.
1415      Many new viscosity diagnostics available.
1416    
1417    checkpoint57s_post
1418    o Add clearing-house for viscosity calculations, mom_calc_visc and
1419      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1420      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1421      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1422      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1423      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1424      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1425      ViscAhStrain and viscAhTension are now retired.
1426    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1427    o In response to JMC's bug report, genmake2 now ignores any soft-links
1428      that it finds in the *current* directory when searching for files.
1429      Soft-links found in any other source directories will still work as
1430      they did before.
1431    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1432      a C routine to unlimit the stack size
1433    o mnc-ify pkg/aim snapshot vars
1434    o mnc-ify pkg/land as requested by Daniel
1435    o various changes to mnc including:
1436      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1437      - output can now be grouped so that all files within a group
1438          change the ITER portion of their names in lock-step together
1439      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1440          and works with both EXCH1 and EXCH2 (but needs more testing)
1441      - writing works for all verification test cases w/ g77 on Linux
1442    
1443    checkpoint57r_post
1444    o make MNC variable initialization happen earlier
1445    o add diagnostics for (almost) each term of the momentum Eq.
1446    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1447    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1448    o remove MINIMAL_TAVE_OUTPUT option ;
1449      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1450    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1451      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1452    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1453    o add time-dependent SST, SSS control
1454    o cost terms in ecco/ modularized (new cost_generic.F)
1455    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1456    o new infrastructure for seaice model vs. obs misfits in seaice/
1457      * driver from the_main_loop.F is seaice_cost_driver.F
1458      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1459      * gradient check in Exp. 6a of natl_box_adjoint/
1460    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1461      (see README file)
1462    
1463    checkpoint57q_post
1464    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1465    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1466      - bug was reported by Jean-Michel and Ian Fenty
1467    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1468      update exp. cpl_aim+ocn output.
1469    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1470      Needed for high-res. runs with large global files
1471      to be able to limit tapelev size
1472    o Changed some tests for adjoint:
1473      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1474      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1475      * global_ocean.90x40x15/ back to default 3-level checkpointing
1476    o Modifications to enable scripted COMMON to MODULE conversion
1477      * verification/OpenAD/code/ has necessary scripts and description;
1478      * converts, compiles and runs successfully;
1479    
1480    checkpoint57p_post
1481    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1482    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1483      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1484    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1485    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1486      (was already the case for dissipation with mom_vecinv,
1487       and also the case for grad.PhiHyd when staggered-timeStep)
1488      This will allow to put dissipation out-off the AB time-stepping.
1489     Unfortunately, affects truncation error. Update output of exp. that "fails"
1490      (cg2d matching number) and leave the others for later: front_relax(10),
1491      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1492      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1493    
1494    checkpoint57o_post
1495    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1496      (2) its ready to be documented during the 20050801 DocFest
1497    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1498      for ideal_2D_oce and lab_sea on linux_ia32_g77
1499    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1500      in global1x1_tot/code_seaice_adj to access indices 32, 33
1501      (worth another tag)
1502    
1503    checkpoint57n_post
1504    o adding precip control xx_precip 32
1505    o adding swflux control xx_swflux 33
1506    o Replacing 10 forcing penalty cost routines by 1 generic.
1507    o Implementing partitioning in time-mean and variable adjustment
1508      for atmos. state.
1509    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1510    o in natl_box_adjoint:
1511      * updated exp 1 to 10
1512        (but does not have time-mean vs. variable split results yet)
1513    o updated global1x1/*_seaice_adj/
1514      to incorporate latest changes
1515    o enable useSingleCpuIO for mdsio vector routines
1516      (applies in particular to tapelev I/O)
1517    o removed inefficient K-loop in all active_file*control*.F
1518    
1519    checkpoint57m_post
1520    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1521      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1522    o pkg/exch2: filling of face-corner halo regions is optional
1523      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1524    
1525    checkpoint57l_post
1526     tag before updating tutorials (pre-release-2)
1527    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1528       for output and interpolation of input fields onto model grid)
1529    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1530       Affects results of exp. rotating_tank ; update output.txt.
1531    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1532          and taking the square quantity and/or using a fraction-weight field.
1533    o fix aim_diagnostics_init.F mate numbers.
1534    o add mnc output capability to diagnostics/diagstat and update
1535      our cvsignore files for the ACSII output generated
1536    
1537    checkpoint57k_post
1538    o lab_sea now uses diagnostics package and provides a suite of
1539      new EXF diagnostics output.
1540    
1541    checkpoint57j_post
1542    o exf
1543      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1544        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1545        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1546      * extended diagnostics output
1547        - now includes all EXF variables
1548        - hs, hl moved to common block
1549        - separate S/R for diagnostics, called after ctrl vector is added
1550        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1551        - EXFqnet contains true Qnet (i.e. includes qsw)
1552      * updated verif. lab_sea, global_with_exf
1553      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1554        to ensure that diagnostics sees a true EXFqnet
1555    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1556    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1557      several times with different frequencies.
1558    o mnc-ify the thsice package as requested by Daniel Enderton
1559      - the monitor--MNC output needs work
1560      - many attributes need to be added (most are currently blank)
1561    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1562      - many attributes need to be added (most are currently blank)
1563    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1564    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1565    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1566      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1567         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1568    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1569     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1570    
1571    checkpoint57i_post
1572    o Diagnostics package was changed: diagnostic allocation is now deactivated
1573      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1574    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1575      add 1rst Order upwind vertical Shear.
1576    o add a quick fix for A/B checkpointing in OFFLINE mode
1577    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1578      end-run around the C/Fortran linking horror in eesup/src/timers.F
1579    o added pkg/runclock: allows user to terminate run based on wall clock
1580    o added non-hydrostatic scaling parameter: nh_am2
1581    o pkg/my82: futile attempt to make results compiler-independent by adding
1582      some "_d 0", etc. no effect.
1583    o for mnc output, fill the 'T' coordinate var with myTime and create a
1584      separate 'iter' variable for iteration count
1585    o pkg/diagnostics:
1586      add new capability: output of Global/Regional & per-level statistics ;
1587      tested against monitor output (including land & thSIce) on various exp.
1588    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1589    
1590    checkpoint57h_done
1591      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1592      data.diagnostics, data.gchem, data.ptracers) is done.
1593    
1594    o pkg/diagnostics: prepare for Global/Regional statistics.
1595      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1596    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1597      and rename it: DIFFERENT_MULTIPLE
1598    
1599    checkpoint57h_post
1600    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1601    o pkg/diagnostics: change output frequency, now in seconds (instead
1602      of Nb of iterations). This requires to change data.diagnostics.
1603    checkpoint57h_pre
1604    
1605    o in mnc, let the user create the output dir if both mnc_outdir_date
1606      and mnc_outdir_num are false
1607    o add fflags() to pkg/diagnostics which allows one to specify, on a
1608      per-file basis, the file precision [default behavior is unchanged]
1609    o added diagnostics to pkg/kpp, including computation of mixed layer
1610      depth based on a temperature/density criterion
1611    o updated verification/natl_box to test the new pkg/kpp diagnostics
1612    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1613    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1614    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1615      not mnc -- this mistake was found by JMC and is now corrected
1616    
1617    checkpoint57g_post
1618    o add Adams-Bashforth 3rd Order time stepping:
1619      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1620      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1621    checkpoint57g_pre
1622    
1623    o make lambda[Theta,Salt]ClimRelax spatially varying
1624      (default remains spatially uniform constant based on tau)
1625    o added new control variables
1626      * init. uVel, vVel, etanN
1627      * lambda[Theta,Salt]ClimRelax
1628    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1629      (suggested by G. Forget)
1630    
1631    checkpoint57f_post
1632    o add parameter "baseTime" = model base time = time at iteration zero
1633      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1634      account for baseTime shift
1635    o move Coriolis arrays from PARAMS.h to GRID.h
1636    checkpoint57f_pre
1637    
1638    o mnc-ifying the seaice package
1639    o introduced an alternative length scale calculation for use in the limiting
1640      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1641    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1642    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1643      as well as grad(vort3).  Made it compatible with both approximate form
1644      for the cubed sphere and full form of these gradients.  Added flag
1645      useFullLeith to select between approximate and full form.  
1646    o add "d0" in getcon.F to reduce differences between compilers/platforms
1647      update output.txt of exp. fizhi-gridalt-hs
1648    o change port_rand funtion to allow to set the seed.
1649    o fix obscure MNC bug involving conversion between reals and integers
1650      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1651        new version is now more standards-compliant
1652    o adjoint-related modifications
1653      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1654      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1655      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1656    
1657    checkpoint57e_post
1658    o Adding eddy stress controls a la Ferreira et al.
1659    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1660    
1661    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1662      update output.txt of exp. fizhi-gridalt-hs
1663    o add more "Z" dimensions and associated coordinate vars to MNC
1664    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1665    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1666      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1667      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1668      months and years.  Requires pkg/cal.
1669    o diagnostics: add pickup functionality
1670      - off by default for backwards compatibility
1671      - current version only uses MDSIO -- MNC will be added
1672    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1673    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1674    
1675    checkpoint57d_post
1676    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1677    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1678      output from the diagnostics package
1679    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1680    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1681      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1682    o add coordinate variables to the MNC output from the diagnostics package
1683    o change MNC-flags default value: true when useMNC=TRUE
1684    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1685      the ability (off by default) to read the grid information using MNC
1686    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1687    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1688    o do snap-shot diagnostics at the middle of the time-interval (instead of
1689      at the end).
1690    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1691      new test for AIM with thSIce + slab-ocean
1692    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1693    o move state variable diagnostics to the beginning of the time step ;
1694      (note: still needs some work specially for snap-shot diagnostics)
1695      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1696    
1697    checkpoint57c_post
1698    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1699    o generate new output.txt files on faulks with g77 & the new -ieee option
1700    checkpoint57c_pre
1701    
1702    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1703      update output.txt of exp. global_ocean.90x40x15
1704    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1705      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1706    o add saltFlux(+File) forcing capability with periodicExternalForcing
1707    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1708    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1709    o improvements for the MNC output from DIAGNOSTICS:
1710      - correct handling of the unlimitied dimension
1711      - all dims now have associated coordinate variables
1712      - variables located at U, V, and Corner ("Z") points are now written
1713        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1714        *all* data points are output
1715    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1716    o added pkg/seaice/seaice_monitor.F
1717    o mdsio_readfield.F can now read files visible only to master MPI process.
1718    o pkg/seaice: some test code for ice-modified ocean stress
1719    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1720      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1721      spurious negative numbers for precipitation and humidity.  Will cause
1722      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1723    o pkg/ctrl/
1724      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1725        May be enabled via doPackDiag
1726      *  introduce z-scaling of
1727         + gradient (doZscalePack) and
1728         + control (doZscaleUnpack)
1729    o pkg/mdsio/
1730      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1731      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1732    
1733    checkpoint57b_post
1734    o simplify options in diagnostics_fill arguments (remove weird combinations)
1735    o fix MNC coordinate variables so that they now contain per-face index
1736      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1737      general, EXCH2 grids are only aligned to a "local" coordinate system
1738    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1739    o Implement instantaneous output within pkg diagnostics:
1740      setting a negative frequency in data.diagnostics produces
1741     "snap-shot" output (as opposed to time-average if freq > 0)
1742    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1743      NOTE: change ptracer diagnostics name: use 2 characters to work with
1744            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1745    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1746      becomes the coordinate variable for the 'T' dimension
1747    o add CF-style coordinate variables to MNC
1748      - just a first cut:  numbers are meaningless on the cubesphere and
1749        missing along the T axis but otherwise it works!
1750    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1751    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1752    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1753      this is based directly on what the model compute, so that the content of
1754      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1755    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1756    o clean up build options files for SunOS, in particular
1757      - remove -traditional from xmakedepend
1758      - change -xarch=v9 to -xarch=native for f77
1759      - restore use of make (not gmake)
1760      - add CC=gcc if using g77
1761    o changes per discussion of AM, JMC, & EH3 today:
1762      - move redundant "grid" variables out of "state" -- in preparation of
1763        creating proper CF-style coordinate variables and in recognition
1764        that any/all grid variables can be easily copied (eg. w/NCO) from
1765        the grid files into any of the other NetCDF files
1766      - *always* output grid variables with MDSIO (this will eventually be
1767        changed)
1768      - output MNC grid file if useMNC is true
1769    o every instance of _END_MASTER() has been found and replaced with
1770      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1771      preprocessors
1772    o re-arrange diagnostics pkg initialisation:
1773     - allow each package to extend the available diagnostics list
1774     - add some checking and fix small problems (multi-threaded, ...)
1775     - new S/R diagnostics_fill (replace fill_diagnostics):
1776       look through the short list of active diag. (instead of the long list)
1777       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1778    
1779    checkpoint57a_post
1780    o this set of changes restores TAMC compatibility
1781      tested for global_ocean.90x40x15 adjoint on trough
1782      (what a pain)
1783    
1784    checkpoint57a_pre
1785    o some modifs in tools/build_options for sunos
1786    o call ctrl_pack for ctrl at end for optimcycle=0
1787    
1788    checkpoint57
1789    o add horizontal bi-harmonic viscosity for vertical velocity
1790      - new parameter viscA4W (defaults to viscA4)
1791      - affects only non-hydrostatic code
1792      - to be done: no-slip lateral boundary conditions
1793    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1794    o implement Implicit Vertical advection for pTracers
1795    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1796      (implemented also for implicit vertical diffusion & advection)
1797    o OBCS: extend application of tracer open boundary conditions
1798      to a strip beyond the boundary of width Olx/Oly
1799    o add call monitor to TAF set of required calls (flow directives)
1800      and include in natl_box_adjoint
1801    o untangle a few ifdefs related to cost, ctrl, autodiff
1802      untangel a few ALLOW_ECCO_OPTIMIZATION
1803    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1804      (theta2, salt2 in ecco_cost_weights)
1805    
1806    checkpoint56c_post
1807    o OBCS as control variables
1808      - update ctrl_ad_diff.list, obcs_ad_diff.list
1809      - remove balance of obcs controls from default
1810      - fix index bug nobcs in ctrl_init
1811      - fix dummy fields filen in ctrl_pack
1812      - add dummy weights for obcs
1813    o lsopt: comment out fort.94 output
1814    o optim:
1815      - remove unnecessary header files
1816      - adjusted namelists
1817      - add xerbla.F to Makefile
1818    o exf:
1819      - multiple modifications of exf_check_range
1820      - unit change in exf_init_runoff from [m/year] to [m/s]
1821    o mdsio:
1822      - i/o-vector change debugLevel from debLevA to debLevB
1823    
1824    checkpoint56b_post
1825    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1826      is called from DO_THE_MODEL_IO
1827      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1828      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1829      - clean up PTRACERS_WRITE_TIMEAVE a little
1830    o add another verification experiment that tests both the cfc-pkg and
1831      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1832      reactive tendencies treated inline with regular timestepping
1833    o testreport previously did a lousy job of comparing small numbers, so
1834      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1835      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1836      testreport.
1837    o ptracers_monitor: bug fix for MPI
1838    
1839    checkpoint56a_post
1840    o GCHEM: finish reorganizating the package
1841      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1842        (introduces another 3D-array for each passive tracer, but only if
1843        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1844        gchemTendency is not needed because the timestep is done separately)
1845      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1846      - GCHEM is now---more or less cleanly---separate from PTRACERS
1847      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1848        so clear to me how that should be done in a general way.
1849    o CFC: improve formatting of output in CFC_ATMOS
1850    o PTRACERS:
1851      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1852        that ALL experiments with ptracers enable can be checked. This makes
1853        GCHEM_MONITOR obsolete.
1854      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1855        monitorFreq
1856      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1857    o add PTRACERS (PTR0[1-5]) to testreport output
1858    o exf_check_range:
1859      * default changed to .TRUE.
1860      * will check values for niter0 if debLevA, every timestep if debLevB
1861      * STOP in exf_check_range if 'out of range'
1862      * range chosen generous to allow for potential extema
1863      TBD: a version with stricter range
1864           permitted range would be runtime parameters
1865    o GMredi:
1866      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1867      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1868      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1869    o GCHEM:
1870      - move call to GCHEM_FORCING_SEP, so that it is now called before
1871        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1872      - introduced a useGCHEM runtime flag and applied it everywhere.
1873      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1874        this flag is now only visible within GCHEM-pkg routines.
1875      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1876        be replaced by a 3D array that is computed before thermodynamics; for
1877        this, the tracer ID iTracer had to be included into the parameter list
1878        of ptracers_forcing
1879      - set up forward_step to call gchem_forcing, that will replace
1880        gchem_forcing_int in ptracers_forcing
1881      - cleaning up
1882    o small cleaning of exch2: remove files that are also in eesupp/src
1883    
1884    checkpoint56
1885    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1886    o mnc: cleanup "full" files--fixes out-of-memory problem
1887    o ECCO-GODAE
1888      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1889      * fully merged and updated from SIO code
1890        windstress sign change affects
1891        - exf_inscal_[u/v]stress
1892        - sign of xx_tau[u/v] adjustments
1893        - signs in cost_scat
1894      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1895      * natl_box_adjoint updated and compressed
1896      * 2-level checkpoint switch added
1897        (tested in EXP. 1 of natl_box_adjoint)
1898      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1899    o SVD
1900      * first complete, non-hacked version for SVD calculations
1901      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1902        performed via direct access files admtlm_vector.it????
1903        (via ctrl_[un]pack)
1904      * optimcycle is used for ARPACK iteration counter
1905        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1906      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1907        and add linear transforms where necessary
1908      * controls are initial/final SST, SSS (can be extended; need to check
1909        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1910    o mdsio: filename info to both stderr, stdout
1911    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1912      from sign change
1913    
1914    checkpoint55j_post
1915    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1916      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1917    o add consistent build directories and .cvsignore files to verification
1918    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1919    o make all subroutines 30 or less characters in length for certain older
1920      compilers to work (a thorough search only turns up two routines in
1921      pkg/ptracers)
1922    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1923      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1924    
1925    checkpoint55i_post
1926    o change arrays for total vertical diffusivity (2.D if explicit,
1927      3.D if implicit) ; each ptracer uses its own background value.
1928    o added mnc/NetCDF output capability to ocn_compon_interf
1929      - added bits to verification/cpl_aim+ocn so that it can run on
1930        ITRDA and other clusters without the mpirun "-wd" option
1931    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1932      configuration
1933    o give MNC the ability to create additional files rather than
1934      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1935      - the default is just less than 2GB which is a practical limit
1936        on many systems
1937    o Compute the non-local term using either KPP vertical diffusivity (=default)
1938       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1939    
1940    checkpoint55h_post
1941    o add verification test "vermix"
1942    o remove all the *_ioinc flags and replace with the single global
1943      outputTypesInclusive flag
1944    o allow to set a vertical profile of vertical diffusivity for T & S
1945    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1946    o useMNC moved from data.mnc to data.pkg
1947    
1948    checkpoint55g_post
1949    o Renaming carbon AD experiments to comply with testreport conventions
1950    o Updating adjoint of Held-Suarez hs94.1x64x5
1951    o Fixing directives for non-ECCO forward_step, after ECCO directives
1952      have been fixed to avoid recomp. of do_oceanic_phys
1953      Works well for global_ocean.90x40x15,
1954      but recomp. issue remains for carbon
1955    o Updating adjoint output for natl_box_adjoint after
1956      pkg/ecco has been modified (see taga c55d_post)
1957    
1958    checkpoint55f_post
1959    o rename to timeave_init_fixed
1960    
1961    checkpoint55e_post
1962    o some delicate re-shuffle of store directives to avoid one
1963      extra call of do_oceanic_physics
1964      affects ecco_the_main_loop.F, do_oceanic_physics.F
1965      checkpoint_lev1_directives.h
1966    o NB: this may break global_ocean adjoint temporarily,
1967      but it is clear how to fix it. Will do later, need this now.
1968    
1969    checkpoint55d_post
1970    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1971    o ecco_cost_weights is modified to 1x1 runs
1972    o modifs to allow observations to be read in as
1973      single file or yearly files
1974    o enable to read exf forcing fields as either
1975      single file or yearly files (flag useExfYearlyFields)
1976    checkpoint55d_pre
1977    
1978    o switch between 2-level and 3-level checkpointing
1979    o add ability of MNC to write local and "partial" (eg. 2D slices where
1980      the full 3D field is never actually stored) arrays to NetCDF files
1981      with the correct (that is, the complete multi-dimensional) set of
1982      array indicies
1983      - used in mom_vecinv() to write the diagFreq output
1984      - tested (demonstrated) in verification/aim.5l_cs
1985    o further mnc-ification
1986      - add verification/lab_sea to the list with mnc setups
1987      - fix undefined mnc v-names in cd_code
1988      - add kpp to mnc output (both snapshot and timeave)
1989    o non-hydrostatic code
1990      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1991        in calc_gw.F
1992      - defaults to viscAh
1993      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1994        friction or Leith) in non-hydrostatic mode, as long as there is
1995        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1996    o pkg/cost
1997      extend simple cost functions to treat time mean quantities
1998      (T,U,V) via cost_accumulate_state from cost_tile
1999    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2000        be 2 times larger than the minimum size the advection scheme requires.
2001        now get a perfect conservation of salt in advect_cs test-exp (updated)
2002    o GGL90 (Gaspar's TKE mixed layer)
2003      - add horizontal diffusion of TKE, requires exchanges in
2004        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2005        default. In OPA there is no horizontal diffusion of TKE but the
2006        mixing coefficients are computed from a horizontal average of TKE of
2007        6 points or so. I think that diffusion has a little more physical
2008        justification.
2009      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2010        was in vain)
2011      - mask tke-variable in ggl90_init
2012    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2013    o fix biharmonic diffusion on CS-grid.
2014    o more obcs stuff
2015      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2016        for reading boundary values. This routine is called from
2017        obcs_prescribe_read
2018      - updated obcs_check
2019      - changed sponge layer relaxation parameter units for days to seconds
2020      - turned off sponge layer by default
2021      - changed argument list of OBCS_CALC to myTime+deltaTclock
2022      - fixed about 35 bugs in obcs_external_fields_load
2023    
2024    checkpoint55c_post
2025    o obcs stuff
2026      - new runtime flags useOBCSprescribe, useOBCSbalance
2027      - re-arranged obcs_calc
2028      - moved exf_getobcs to obcs_prescibe_read
2029        obcs_prescibe_read is called after ORLANSKI stuff
2030        and independent of it (executable can contain all).
2031      - updated obcs_check
2032      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2033        These may be necessary only if tangential velocities are
2034        prescribed at OB, not sure, needs testing.
2035    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2036      which simplifies the calls and passes the ifc check-bounds test
2037    
2038    checkpoint55b_post
2039    o add a 2D scalar, Z location, exchange_2 routine.
2040    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2041      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2042      affects advect_cs results (for the wrong reason): update output.txt
2043    o use a more standard discretization for biharmonic viscosity ;
2044     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2045      affects results of dome set-up: update output.txt
2046    o fix gad_advection.F (CubedSphere part), back to version 1.23
2047    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2048    
2049    checkpoint55a_post
2050    o merged code to
2051      * prescribe/read time-dependent open boundaries
2052        (works in conjunction with exf, cal)
2053      * sponge layer code for open boundaries
2054      * each boundary N/S/E/W now has its own CPP option
2055        (healthy for the adjoint)
2056    
2057    checkpoint55
2058    o up-to-date adjoint of previous breaks
2059      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2060      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2061      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2062      - carbon: * remove tr1-related adjoint verification
2063                * add ptracer as control variable
2064    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2065      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2066    
2067    checkpoint54f_post
2068    o in verification/carbin/ remove experiment related to
2069      ALLOW_PASSIVE_TRACER (array tr1 etc)
2070      code_ad/ input_ad/ results_ad
2071    
2072    o add two new packages
2073      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2074        + subject to optimization (memory)
2075      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2076        + subject to reordering (many GOTOs in the original code)
2077        + so far opps is called for every (i,j) point, and then operates in
2078          the vertical; one may want to reorder the scheme in order operate in
2079          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2080          fields)
2081    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2082      - all verification tests compile and run with linux_ia32_g77
2083      - defaults are compatible with current input files--nothing
2084        should change if you were not previously using MNC
2085      - MNC output has been added in numerous places (eg. timeave)
2086        but there are still a few writes not yet do-able with MNC
2087        (this is in progress)
2088      - flags now allow for either/or/both use of MDSIO and MNC and
2089        documentation will soon follow
2090      - numerous small formatting cleanups for ProTeX
2091    o add version info (via BUILD_INFO.h) to MNC and stdout
2092    
2093    checkpoint54e_post
2094    o add two new packages
2095      - pp81 (Packanowski and Philander, 1981), Richardson number and
2096        stratification dependent mixing
2097      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2098      - these scheme operate in a similar manner as KPP (without ghat, of
2099        course), however there is only one diffusivity that is used for both
2100        temperature and salinity (and passive tracers)ç
2101    o add offline package
2102    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2103      provided by Stephanie Dutkiewicz
2104    o genmake2: add ability to search for C compilers and cleanup test output
2105      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2106    
2107    checkpoint54d_post
2108    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2109    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2110      leading to additional shift by 5 days each year of integration
2111       (i.e. leading to considerable offset over the years)
2112    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2113    o start with no AB and no initial filtering (staggerTimeStep):
2114      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2115    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2116      (external loading & cpl import/export stay in forward_step.F)
2117    o update coupling interface to work with new staggerTimeStep
2118    o change MDSIO ptracers_pickup.
2119    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2120    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2121    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2122    
2123    checkpoint54c_post
2124    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2125      this affects (truncation error) output.txt of test-exp:
2126       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2127    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2128    o change Qnet to always be the net heat flux, (+upward).
2129      affects (truncation error) output of natl_box exp.: updated
2130    o define the max number of passive tracers in PTRACERS_SIZE.h
2131    o start to test mnc routinely in exp0
2132    o add sea-ice loading (sIceLoad) as a new forcing field.
2133    
2134    checkpoint54b_post
2135    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2136       impressive on Altix and Opteron systems)
2137    o diagnostics can now write NetCDF files through the mnc package
2138    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2139    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2140    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2141      affects (truncation error) output of lab_sea & natl_box exp.: updated
2142    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2143    
2144    checkpoint54a_post
2145    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2146    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2147    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2148    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2149      + internal_wave (shift in writing cg2d_ini_res)
2150    checkpoint54a_pre
2151    
2152    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2153      - modified verification/lab_sea and natl_box_adjoint accordingly
2154    
2155    checkpoint54
2156    checkpoint53g_post
2157    o prepare splitting of thermodynamics: store convect.counter in common block
2158    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2159      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2160    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2161    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2162    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2163    o restore adjointability
2164    
2165    checkpoint53f_post
2166    o modifications that affect AIM experiment results (update output.txt):
2167      - no advection of S at top interface Nr (pkg/generic_advdiff)
2168      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2169    o AIM pkg:
2170      - include stability function into surf.Flux derivative relative to Tsurf
2171      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2172    
2173    checkpoint53e_post
2174    o merged cylindrical coord configuration
2175    o added rotating_tank experiment
2176    checkpoint53e_pre
2177    
2178    checkpoint53d_post
2179    o faulks upgraded: re-generate output.txt that have changed:
2180       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2181    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2182    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2183    o added Sadourny discretization of Coriolis
2184      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2185      - re-enabled use of omega3 (useAbsVorticity)
2186    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2187      vector-invariant equations
2188      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2189    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2190      hopefully without new bugs
2191      - still to do: biharmonic friction for non-hydrostatic w
2192    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2193    o regenerated output for global_ocean_ebm (using -ieee)
2194    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2195      of mom_common/
2196      - simple re-arrangement of instructions within computing loop
2197    checkpoint53d_pre
2198    
2199    checkpoint53c_post
2200    o new version of coupler for AIM+thSIce and Ocean models
2201     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2202     - land: change Evaporation of snow
2203     - aim with thSIce: fix bug in snow-precip.
2204    o changes to calc_gw.F
2205     - bug fix for w^2 term near the bottom boundary
2206     - (hopefully) improve the lateral slip boundary condtions for use with
2207        partial/looped cells
2208      - because the bug fix changes two verification experiments anyway (exp5
2209        and plume on slope), change the lateral boundary condition from half slip
2210        to the value of no_slip_sides
2211    o ebm package wasnt quite up to the parallel task. Fixed that.
2212    o Adjoint of EBM package + verification
2213      * TLM OK
2214      * ADM not sufficient accuracy yet (needs further testing)
2215    
2216    checkpoint53b_post
2217    o Commiting new energy balance model to repository
2218      * package is pkg/ebm
2219      * verif. is verification/global_ocean_ebm
2220      * references are in ebm_driver.F
2221    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2222    C        Global thermohaline circulation. Part I:
2223    C        Sensitivity to atmospheric moisture transport.
2224    C        J. Climate 12(1), 71-82
2225    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2226    C        Global thermohaline circulation. Part II:
2227    C        Sensitivity with interactive transport.
2228    C        J. Climate 12(1), 83-91
2229    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2230    C        Destabilization of the thermohaline circulation
2231    C        by atmospheric eddy transports.
2232    C        J. Climate 7(12), 1870-1882
2233    o Will need long integration testing.
2234    checkpoint53b_pre
2235    
2236    o created pkg/mom_common in preparation for variable viscosity code
2237    o renamed and split ini_mnc_io
2238    o pkg/land: only liquid water can diffuse or run-off
2239    o AIM using land: soil wetness availability account for snow
2240    o added printMapIncludesZeros to EEPARMS namelist
2241    
2242    checkpoint53a_post
2243    o restore TAMC compatiility for exf_constants.h
2244      (no usage of _d in .h)
2245    o Additional storing in KPP in an attempt to fix
2246      TAMC problem with adjoint of KPP code.
2247      (no success...)
2248      Identical code works fine with TAF.
2249    o Fixed verification/natl_box_adjoint experiments.
2250      Initial conditions for Experiments 4 and 5 are now
2251      set to "SEAICE_initialHEFF=0", which is more reasonable,
2252      and hence gives results closer to that of Experiment 2.
2253      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2254    
2255    checkpoint53
2256    o stable checkpoint with up to date adjoint
2257      TLM tests only run for 1st grdchk at the moment. Its unclear if
2258      this is a code problem or a problem with resetting code for g_
2259      variables that is being autogenerated wrong.
2260      Otherwise:
2261       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2262       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2263         are both still in chaos following their security messes.
2264    
2265    checkpoint52n_post
2266    o various build (mostly genmake2) changes including:
2267      - ability to build/run more easily within Cygwin and MacOS X
2268      - more complicated Makefiles with a stronger dependence on Gnu Make
2269    o pkg/seaice modifications
2270      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2271        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2272        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2273      - changed proxy for geostrophic velocity and updated
2274        verification/lab_sea/results/* accordingly
2275      - removed ADI dynamic solver from pkg/seaice
2276      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2277        they caused a segmentation fault under certain circumstances
2278      - removed unused field WATR
2279    o bug fix in exf-package:
2280      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2281         now reflect that.
2282    o small fixes in the cal-package:
2283      - set reference date to first of January for the 'model'-calendar
2284      - failing of cal_CheckDate in cal_FullDate now actually results in a
2285        warning
2286    o small modifications in exf-package to increase flexibility:
2287      - change climtempfreeze from a constant to a runtime parameter that
2288        is specified in data.exf_clim (default = -1.9)
2289      - introduce runtime parameter windstressmax (default = 2.0) that is
2290        specified in data.exf
2291    o fix in pkg/thsice:
2292      - update Evap (Tsf changes) to be consistent with Latent heat flux
2293      - maintain snow precipitation unchanged (even if Tsf >=0).
2294     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2295    
2296    checkpoint52m_post
2297    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2298      this does not change any of the results, because myIter=0 in swfrac always
2299      lead to jwtype=2 (the default anyway), but the call makes little sense
2300      as a default
2301    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2302    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2303      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2304    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2305    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2306    o extending useSingleCpuIO option to work with new exch2 I/O format
2307      - old-style, missing-tile I/O is still accessible by defining CPP
2308        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2309    o monitor package can write to NetCDF files and/or STDOUT
2310    o fix re-definition bug in MNC_GRID_INIT_ALL()
2311    o doc/api_reference added
2312      - a framework for building an API Reference Manual using all
2313        the "protex" comments embedded in the code
2314      - see pkg/generic_advdiff, pkg/mnc for examples
2315    o MNC:
2316      - make myThid the last argument for all subroutines
2317      - new default for the grid files: NO halos
2318      - add useMNC and other run-time flags
2319      - separate per-file-group handling of the unlimited dimension
2320      - early initialization of MNC w/ flags read at the eeboot stage
2321        and lookup tables set in initialize_fixed
2322      - write all MNC output to a freshly-created directory
2323    o thermodynamics sea-ice (thsice) is now tested with testreport.
2324    o test exp. advect_cs: use the standard cs32 grid ; update output.
2325    o Added functionality to grdchk:
2326      pick global i,j,k position (or nearest wet) where to perform check.
2327    
2328    checkpoint52l_post
2329    o new land formulation:
2330      a) use ground enthalpy as prognostic variable to ensure exact
2331         energy conservation.
2332      b) account for water temperature and for latent heat of freezing
2333         in all processes (rain, run-off, ground storage)
2334      c) compute surface and ground temperature implicitly.
2335    o aim_v23 modification for new land model:
2336      a) Treat separately land / ocean / sea-ice surface fluxes
2337         to allow implicit computation of land & sea-ice surface temp.
2338      b) add snow precipitation.
2339    checkpoint52l_pre
2340    
2341    o fix problem (when 1 tile is empty) in min/max monitor.
2342    o fix bug in timeAve (u,vZetatave in common block)
2343    o no restoring terms under ice for pkg/seaice
2344    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2345    o bug fix for pkg/seaice pickups
2346    o change MNC call locations and add coordinate attributes
2347    o mask vorticity at the corner ; affects global_ocean.cs output
2348    o fix ini_curvilinear_grid ; test CS experiments with mpi
2349    o aim.5l_cs: modify sea-ice fraction input file ; update output
2350    o exf: Adding simple range check routine for exf fields after read
2351    
2352    checkpoint52k_post
2353    o removed top-level directory "diags"
2354      - we migrated these functions to pkg/timeave a long time ago
2355    o fixed bug introduced in pkg/monitor
2356    o accuracy ctrlprec = 32 insuffient for gradient checks using
2357      averaged fields (I/O via cost_averages)
2358      -> use ctrl.h in active_file*.F to control I/O precision.
2359    o paramter list of CALL ADTHE_MAIN_LOOP
2360    o added initial do_the_model_io to ecco
2361    o set all ...Freq to zero after cost_final
2362      taveFreq, dumpFreq, pChkptFreq
2363    o MAIN and ECCO differentiability restored
2364    
2365    checkpoint52j_post
2366    o fix nchklev in tamc.h for global_ocean...
2367    o Bringing flow and store directives up-to-date
2368    o Really weird thing!
2369      call do_the_model_io from the_main_loop with parameters
2370      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2371      TAF places a faulty re-call of initialise_varia
2372      after cost_final call which should not be there!
2373    checkpoint52j_pre
2374    
2375    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2376      error messages
2377    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2378    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2379      debug output
2380    o modfied mdsio_writefield.F to handle non-global files under exch2
2381    o update AIM Cubed-Sphere exp (aim.5l_cs):
2382      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2383    o update AIM Equatorial Channel exp:
2384      use standard aim_v23 pkg and change the SST fields to be more realistic.
2385    o globalFile now works with exch2
2386    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2387      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2388    o limit timeave output for hi-res integrations
2389    
2390    checkpoint52i_post
2391    o removed CPP_EEOPTIONS.h from verification/*/code
2392    o updated the tiling for global_ocean_pressure
2393    checkpoint52i_pre
2394    
2395    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2396      the old pkg/aim).
2397    
2398    checkpoint52h_pre
2399    o shortened offending lines in exch2_send_rx?.template
2400    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2401    o genmake2: add build & execute test for NetCDF code
2402    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2403      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2404    o added useSingleCPUIO flag to monitor.F and mon_out.F
2405    o added temporary hack for sea-ice dynamics on the cube:
2406      metric terms are ignored and it is assumed that
2407      there is no sea-ice on cube faces 1, 2, 4, and 5.
2408    
2409    checkpoint52f_post
2410    o added exch2 cube routines to pkg/exch2
2411    o modified hs94.cs-32x32x5 to use it
2412    o added new grid files to hs94.cs-32x32x5
2413    checkpoint52f_pre
2414    
2415    checkpoint52e_post
2416    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2417      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2418    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2419      to work with implicit vertical advection and AB ;
2420    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2421    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2422     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2423    checkpoint52e_pre
2424    
2425    o fix bug in impldiff when Nr=1 or Nr=2.
2426    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2427    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2428    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2429      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2430    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2431    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2432    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2433    
2434    checkpoint52d_post
2435    o re-tiled many expts to allow comparison in multi-processor mode
2436      - updated output accordingly
2437      - changed hs94.128x64x5 to use intial T from file rather than use the
2438        random number generator
2439    o add infrastructure in model routines for fizhi and gridalt packages
2440    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2441    o changes to permit hi-res, cubed-sphere, configuration
2442      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2443      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2444      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2445        of surface winds for the cube
2446      (A verification experiment, based on global_ocean.cs32x15, but with
2447       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2448       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2449       complete with example surface forcing files and matlab scripts to look
2450       at the output and compare it with that of global_ocean.cs32x15.)
2451    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2452       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2453       to conform to the common rule.
2454    o check-in the first version of the coupler + interfaces for multi-components
2455       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2456       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2457       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2458       - ocean and atmos. share the same horizontal grid (no interpolation).
2459       - exchanges between component and coupler is done in forward_step
2460    o new verification experiment, cpl_aim+ocn:
2461       coupled ocean - AIM atmosphere on cs32 grid.
2462    
2463    checkpoint52d_pre
2464    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2465    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2466    
2467    checkpoint52c_post
2468    o Fixing OPTIONS files for use of exf:
2469      - ALLOW_ECCO not needed
2470      - ECCO_CPPOPTIONS.h should not be included from
2471        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2472        as has been the case in the past
2473      - All cal/exf related options are currently set in
2474        single header file. Should remain so until we
2475        agree on a consistent new policy.
2476    o Removed all CPP options for cal package.
2477      cal has no more CPP options.
2478    o modified STOREs in GAD_ADVECTION
2479    o corrected key comp. for passkey
2480    
2481    checkpoint52b_post
2482    o new version: "thsice" of thermodynamic sea-ice pkg:
2483     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2484     - modify fluxes but do not change theta directly;
2485     - light cleaning of bulk_force pkg (still needed with thsice).
2486     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2487       + output_thsice.txt to test thsice & bulk_force pkgs.
2488    o put back grid & coriolis monitor output.
2489    checkpoint52b_pre
2490    
2491    o call "do_the_model_io" at the beginning (=> dump initial state)
2492    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2493    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2494      (need info on NUMBER_OF_PTRACERS)
2495    o missing PTRACERS headers in some routines
2496    o default tamc.h in pkg/autodiff supposed to crash
2497      to ensure proper customization
2498    
2499    checkpoint52a_post
2500    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2501      - moved surfaceTendencyTice from pkg/seaice to main code
2502      - subroutine FREEZE_SURFACE now limits only surface temperature
2503        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2504        => new output.txt for global_ocean.cs32x15 & global_with_exf
2505      - keep the old version of FREEZE for backward compatibility;
2506        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2507      - corresponding modifs for TAF directives
2508    o added surface flux output variables to TIMEAVE_STATVARS
2509    o time-averaged output for pkg/ptracers
2510    o fix problem with ECCO-related divided adjoint
2511      snapshot file was missing some ad-variables,
2512      but no warning issued by TAF
2513    
2514    checkpoint52a_pre
2515    o some bug fixes for #undef REAL4_IS_SLOW
2516    
2517    checkpoint52 = ecco_c52_e35
2518    o after testing adjoints of checkpoint51u_post
2519    
2520    checkpoint51u_post
2521    o this is the post-merge tag of the ecco-branch
2522      (needs another clean checkout and re-testing)
2523    o various natl_box_adjoint configs and results
2524      but no input fields
2525    o obcs adjoint not yet merged!
2526    o adding ECCO global 1x1 and 2x2 degree configs
2527    o updated/extended some store directives for seaice
2528    o pkg/ecco now containes ecco-specific part of cost function
2529    o top level routines the_main_loop, forward_step
2530      supersede those in model/src/
2531      previous input data.cost now in data.ecco
2532      (new namelist ecco_cost_nml)
2533    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2534    
2535    checkpoint51t_post
2536    o this is the pre-merge tag of the ecco-branch
2537    
2538    checkpoint51s_post
2539    o cleanup: removed various obsolete #define-s
2540    o pkg/grdchk
2541      - renamed 'ph-grd 3' to 'grad-res'
2542      - merged from ecco-branch
2543        (remaining bug fixes for obcs gradient checks)
2544      - additional high-precision output for testreport
2545        (grep for 'precision_grdchk_result')
2546    
2547    checkpoint51r_post
2548    o cleaned up or removed CPP_OPTIONS.h files
2549    o updated results for some of the tests to reflect the new
2550      optfiles (-ieee: -O0 instead of -O3)
2551    
2552    checkpoint51q_post
2553    o cd_code:
2554      - moved cd_scheme.F -> cd_code_scheme.F
2555      - separate read_checkpoint from cd_code_ini_vars.F
2556      - separated cd_code part from write_checkpoint
2557      - updated AD_SOURCE, generated .flow
2558      - added CD_CODE_VARS.h to the_main_loop
2559      - Moving cd_code specific store dir.s to pkg/cd_code
2560    o ctrl package totally restructured
2561      - pack/unpack now optional and decoupled from
2562        xx_/adxx_ I/O
2563      - ctrl_pack/unpack cleaned
2564        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2565      - confined inclusion of AD_CONFIG.h to where necessary.
2566    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2567    
2568    checkpoint51p_post
2569    o create initial cd_code package
2570      - WARNING: the initialization of fields within packages
2571        is broken because INI_FIELDS (where READ_CHECKPOINT is
2572        called) is called *before* PACKAGES_INIT_VARIABLES.
2573        This seems to be backwards since
2574        1) its important to initially zero the entire field including
2575           the "halo" region
2576        2) zeroing needs to be done *before* reading pickup info
2577           and the pickup call might or might not happen in any
2578           particular run
2579      - this needs an overhaul for R2
2580    o cleanup verification/*/code/GMREDI_OPTIONS.h
2581    o cleanup testreport
2582    
2583    checkpoint51o_post
2584    o bringing AD-related verif's up to date with genmake2
2585      - carbon/
2586      - global_ocean.90x40x15/
2587      - hs.94.1x64x5/
2588      - (front_relax/ )
2589    o (more) consistent directory structure for AD-related verif.'s
2590    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2591    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2592    o bug fix in find_alpha.F for MDJWF:
2593      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2594        change rho -> rho-rhoConst
2595      - replace call find_rho to find_rhonum
2596    o initialisation of rFlx extended to full array (required by TAF)
2597      and shifted to thermodynamics
2598    o removed PTRACERS.h in ptracers routine
2599    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2600    o Correcting initialisations for fVerU, fVerV.
2601    o helping TAF to recognize dependency on kUp for
2602      fVerU, fVerV
2603    o Replacing delZ by delR in pkg/ctrl/
2604    checkpoint51o_pre
2605    
2606    o undid all of cp51 pending some cleanups and discussion
2607    o added the [#include "AD_CONFIG.h"] statement to all files that need
2608       it for adjoint/tl #defines
2609     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2610     o removed tools/genmake since it no longer works
2611    
2612    checkpoint51n_post
2613    o modifications to make FREEZE flux visible to pkg/kpp
2614      - moved surfaceTendencyTice from pkg/seaice to main code
2615      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2616      - subroutine FREEZE now limits only surface temperature
2617        (this means new output.txt for global_ocean.90x40x15,
2618         global_ocean.cs32x15, and global_with_exf)
2619    o added surface flux output variables to TIMEAVE_STATVARS
2620    
2621    checkpoint51n_pre
2622    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2623    o added [#include "AD_CONFIG.h"] to all files that use the following
2624      defines:
2625      - ALLOW_ADJOINT_RUN
2626      - ALLOW_TANGENTLINEAR_RUN
2627      - ALLOW_ECCO_OPTIMIZATION
2628    
2629    checkpoint51m_post
2630    o incorporating changes to get TAMC/TAF working in genmake2
2631      - added new TAMC/TAF targets to the Makefile
2632      - various cleanups related to package handling
2633      - these changes should have no impact on the forward model
2634    
2635    checkpoint51l_post
2636    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2637     - faster algorithm for cal_addtime.F
2638     - higher precision arithmetic, where needed
2639     - pkg/exf *startdate variables changed from calendar date to
2640       model integration time
2641    
2642    checkpoint51l_pre
2643    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2644    o enable to apply restoring on S & T only in a latitude band.
2645    o update output (external_forcing_surf modif. change truncation errors)
2646       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2647    
2648    checkpoint51k_post
2649    o change default to: useNHMTerms=.FALSE.
2650     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2651       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2652     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2653        exp1, ideal_2D_oce
2654     - change data file of oceanic exp (leave the results unchanged for now)
2655       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2656    o set gravitySign automatically according to the vertical coordinate used
2657      (and change sign: back to "logical" value: +1 when R increases downward)
2658    o added an include barrier to the default CPP_OPTIONS.h and
2659      removed the #include "PACKAGES_CONFIG.h" from it
2660    o fix a bug in mom_fluxform (from chk51j_post)
2661    
2662    checkpoint51j_post
2663    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2664    o adjusted some flow directives (dynamics, thermodynamics)
2665    o added cubed-sphere case to test cost function
2666    o heckpoint_lev?_directives.h now include
2667      pkg-specific directives, whenever those are enabled.
2668    o Moving pkg-specific flow directives to corresponding pkg
2669      Moving pkg-specific differentiation list to corresponding pkg
2670      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2671      ---> conventions are
2672           - pkg_ad.flow
2673           - pkg_ad_diff.list
2674           - pkg_ad_check_lev?_dir.h
2675    
2676    checkpoint51i_post
2677    o merge of the branch-genmake2
2678      - knowingly breaks the older genmake
2679      - automatic generation of all ALLOW_${PKG_NAME} defines
2680      - new testreport supersedes older testscript
2681    o large number of package inclusion and header cleanups
2682    checkpoint51i_pre
2683    
2684    o new output for adjoin of global ocean vector invariant
2685    o fix for checkpoint of thermodynamic seaice and bulk_force
2686    o Steph gchem various cleanups
2687    
2688    checkpoint 51h_pre
2689    o fixed some single quotes
2690    o modify gchem pkg to be more versatile
2691    o modifications to clean up dic pkg
2692    o add pkg/cfc
2693    
2694    checkpoint51g_post
2695    o provide links for ARPACK and ADM*TLM
2696    o start removing verification/vero/
2697    o update AD-related stuff
2698      (in particular some IF-statements in model/src/ routines)
2699    o adding to verification/global_ocean.90x40x15/ adjoint of
2700      vector invariant setup
2701    
2702    checkpoint51f_post
2703    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2704    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2705      of tracer Green's fucntions for ocean inversion project.
2706    
2707    checkpoint51f_pre
2708    o Added on-the-fly spatial interpolation capability
2709        "USE_EXF_INTERPOLATION" to pkg/exf.
2710      - This is a temporary Cartesian-grid hack until
2711        the super-duper ESMF coupler becomes available.
2712      - See verification/global_with_exf/README for usage example.
2713      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2714        flags and modified pkg/seaice accordingly.
2715    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2716        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2717        non-local transport term.
2718    
2719    checkpoint51e_post
2720    o pkg/mom_vecinv:
2721      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2722      - add time-ave diagnostic of vorticity advection.
2723    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2724    o atmospheric geopotential: - include water vapor effect;
2725                                - use p^kappa in p* scaling.
2726    o land pkg: read initial state from files.
2727    o AIM : add stratospheric drag in the upper level
2728    
2729    checkpoint51d_post
2730    o change function ILNBLNK (=> last non-blank char.) to return zero
2731      (instead of the string length) when the string. char is empty
2732    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2733    o modif's to restore TAMC compatibility
2734      - avoid "_d" constructs in PARAMETER declarations
2735      - avoid interrupting lines by comment lines
2736    o Use cluster local disks for purely local I/O
2737      vs. globally visible disks needed for ctrl stuff
2738      (merged from ecco-branch)
2739      - new active_file_loc... and mdsio_..._loc routines
2740      - affected packages: autodiff, ctrl, grdchk, mdsio
2741    
2742    checkpoint51c_post
2743    o introducing integer flag debugLevel
2744      - debLevZero: suppress all output
2745      - debLevA: standard
2746      - debLevB: equivalent to current debugMode=.TRUE.
2747    o introducing pathname variable mdsioLocalDir for mdsio
2748      that can be specified at runtime
2749      (relevant for cluster I/O to local disk)
2750    `
2751    >>>checkpoint51b_post
2752    adjoint of ptracers
2753    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2754    o extended state in checkpoint_lev?, etc.
2755    o alternative ctrl/cost with tr1 or ptracer
2756    o new comlev1_bibj_ptracers
2757    o new ptracers.flow
2758    o made ptracers_forcing same as external_forcing_s
2759    o added verification for adjoint with ptracers
2760      - adm. grdchk fail so far
2761      - tlm. grdchk OK
2762      - checked tapelev/comlev recomputations: OK
2763    <<<checkpoint51b_pre
2764    
2765    checkpoint51a_post
2766    o added code for biogeochemistry package
2767      - new pkgs: dic, gchem
2768      - new subroutine in ptracers
2769    o modify code for biogeo packages
2770      - in model/src and pkg/ptracers
2771    
2772    checkpoint51
2773    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2774      - autodiff, ctrl, exf, grdchk, seaice
2775      kept separate packages
2776      - cost, ecco, obcs
2777    o updating verification/internal_wave, verification/lab_sea
2778      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2779    
2780    checkpoint50i_post
2781    o Preparing next differentiable checkpoint and sync
2782      of MAIN vs. ecco-branch
2783      - 1st step: this one is differentiable
2784      - 2nd step: next(! not this) checkpoint will have updated packages
2785                  from ecco-branch)
2786    
2787    checkpoint50h_post
2788    o new package "land": provide surface BC for AIM.
2789    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2790    o AIM: use true log-P extrapolation for near surface temp (= as in
2791        F.Molteni paper) ; update aim.5l_cs output.
2792    o New variable in PARM03 for more flexible pickups
2793    o somewhat cleaned package initialisation sequence for
2794      ctrl/ cost/ ecco/ in packages_... routines
2795    
2796    checkpoint50g_post
2797    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2798      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2799      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2800        made the default because of faster convergence than ADI
2801    
2802    checkpoint50f_post
2803    o exf totally restructured
2804      - replaced all exf_set_ routines by one generic exf_set_gen.F
2805        and made sure it's still differentiable
2806      - split exf_getffields.F into new exf_bulkformulae.F
2807      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2808      - updated adjoint/makefile and relevant verif. accordingly
2809    
2810    checkpoint50f_pre
2811     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2812          + change Evap over land. (update aim.5l_cs output)
2813     o added missing .cvsignores and made uniform across expts
2814     o changed configuration of tidal_basin_2d expt
2815     o added pkg/debug functions for tracing code in fatal crashes
2816     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2817     o new fn in pkg/monitor to stop model if solution grows too big
2818     o removed lots of single quotes from comments
2819    
2820    checkpoint50e_post
2821    o make KPP work with PTRACERS
2822     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2823       nearly a copy of kpp_transport_s
2824     - there is no analogue to SurfaceTendencyS, so I have to use
2825       gPtr(of the surface layer) instead
2826    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2827    checkpoint50e_pre
2828    
2829    checkpoint50d_post
2830    o change kpp output from multiple-record state files to single-record state
2831      files analogous to write_state.F
2832    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2833      analogous to the cg2d-related output.
2834    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2835      so that writing to internal file fn (with length 512) fails.
2836    checkpoint50d_pre
2837    
2838    checkpoint50c_post
2839    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2840    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2841    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2842    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2843    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2844    
2845    checkpoint50c_pre
2846    Merging from release1_p13:
2847    o bug fix for pkg/seaice dynamic solver
2848    o Added SEAICE_initialHEFF to pkg/seaice
2849    
2850    checkpoint50b_post
2851    o store u*,v* in gU,V instead of in guNm1,gvNm1
2852    o in order to put the momForcing out of the Adams-Bashforth:
2853      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2854      to timestep.F
2855    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2856    o re-generate output for highly sensitive test-exp:
2857       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2858    
2859    checkpoint50b_pre
2860    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2861    o corrected CPP option mismatch in exf_Bulk... functions for case
2862      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2863    
2864    checkpoint50a_post
2865    o Bug fix for merging between c50 and KPP.
2866      ikey was passed from thermodynamics to kpp_calc via
2867      common block rather than being recomputed in kpp_calc,
2868      in contradiction with new key itdkey.
2869      New key ikppkey created, and tamc.h headers updated.
2870    
2871    checkpoint50
2872    - 2nd step of merge with ecco-branch:
2873      merge changes in ecco-branch back into main trunk
2874    - bug fix in find_alpha
2875    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2876    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2877    - merged some sliced AD support routines
2878    
2879    checkpoint49
2880    merged from ecco-branch:
2881    o exf:
2882      - Enable initialisation of forcing fields to constant
2883        (runtime) values.
2884      - in exf_getffields.F
2885        Reduce i-/j-loop to interior domain, discarding overlaps.
2886        That also fixes wrong TAF-key computations for key_1, key_2
2887        with bulf formulae.
2888      - exf_init.F modify #ifdef for exf_init_evap
2889      - exf_getffieldrec.F, ctrl_getrec.F
2890        The following INT-usages are not safe:
2891          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2892          fldcount = int(fldsecs/fldperiod) + 1
2893        and were modified.
2894    o autodiff: checkpoint_lev...
2895      - updated storing for bulk formulae (some arrays were missing)
2896      - added state for seaice package
2897      - synchronized with main branch
2898    o DIVA:
2899      Modif.s in
2900      - the_main_loop.F
2901      - the_model_main.F
2902      and added cost_final_restore.F cost_final_store.F
2903      o With these changes, it is possible to fully separate
2904        the first forward run to compute the cost function (mdthe_main_loop)
2905        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2906        into separate model executions.
2907        This enables better tuning of DIVA to given queue sizes.
2908      o Loss of cost function value in consecutive DIVA runs is
2909        fixed by storing to 'costfinal' file.
2910      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2911        beginning/end of adjoint integration is accounted for.
2912      The current changes apply to TAF-1.4.26.
2913      TAF has one remaining bug, requiring one manual change
2914      (see MITgcm manual).
2915    o cal: synchronized between MAIN and ecco-branch
2916    
2917    checkpoint48i_post
2918    o Changes to restore differentiability of code w.r.t. previous tag
2919      (mostly adding new routines to make list and replacing
2920      pressure by totPhiHyd).
2921    o Updated and merged grdchk package
2922      - has both ADM and TLM checks
2923      - works for single- and multi-proc.
2924      - output cleaned
2925      - worked successfully for parallel DIVA
2926    o genmake:
2927      - Adding -platform=SP4
2928      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2929    o Modif. for DIVA:
2930      ctrl_unpack should not be called in intermediate DIVA interval.
2931      (similar thing would apply for active files such as
2932      tbar, sbar, psbar, which should not be reinitialised;
2933      only relevant for ecco-branch)
2934    
2935    checkpoint48h_post
2936    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2937    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2938    o Added SEAICE_initialHEFF to pkg/seaice
2939    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2940    
2941    checkpoint48g_post
2942    --- EOS:
2943    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2944      store total Potential in totPhyHyd for diagnostics & EOS.
2945    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2946    --- Pressure/geopotential gradient:
2947    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2948    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2949      ( changes results of global_ocean_pressure )
2950    o NLFS + z-coord.: add eta*Rho' contribution.
2951    o accurate phiHyd when using interface-W at the middle between 2 centers
2952     ( changes results of ideal_2D_oce )
2953    o includes r* 2nd term in potential gradient.
2954    
2955    checkpoint48f_post
2956    Merging from release1_p12:
2957    o Modifications for using pkg/exf with pkg/seaice
2958      - improved description of the various forcing configurations
2959      - added basic radiation bulk formulae to pkg/exf
2960      - units/sign fix for evap computation in exf_getffields.F
2961      - updated verification/global_with_exf/results/output.txt
2962    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2963      (SBO) core products, including oceanic mass, center-of-mass,
2964      angular, and bottom pressure (see pkg/sbo/README.sbo).
2965    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2966      to avoid negative values in shallow regions.
2967      - updated verification/natl_box/results/output.txt
2968      - updated verification/lab_sea/results/output.txt
2969    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2970    o Added useSingleCpuIO option (see PARAMS.h).
2971    o Updated useSingleCpuIO option in mdsio_writefield.F to
2972      work with multi-field files, e.g., for single-file pickup.
2973    o pkg/seaice:
2974      - bug fix in growth.F: QNET for no shortwave case
2975      - added HeffFile for specifying initial sea-ice thickness
2976      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2977    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2978      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2979    o pkg/seaice:
2980      - adjoint-friendly modifications
2981      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2982    
2983    checkpoint48e_post
2984    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2985    o dynamics: change definition of computational domain & adapt mom_fluxform
2986      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2987    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2988        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2989        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2990        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2991        inverted_barometer solid-body.cs-32x32x1
2992      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2993    
2994    checkpoint48d_post
2995    o in preparation for r*:
2996     a) use pre-computed gradient of hydrostatic potential:
2997        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2998     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2999        => affects results of glob_oce_pressure (different truncation error)  
3000      update output.txt of ideal_2D_oce & global_ocean_pressure
3001    
3002    checkpoint48d_pre
3003    o in preparation for r*:
3004      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3005      pass the 2 comp. of the grad. as arguments to momentum S/R.
3006      but for the moment, only used if it does not change the results.
3007    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3008    
3009    checkpoint48c_post
3010    Modifications in treatment of initial flux forcing controls
3011    to avoid extra storing of flux fields.
3012    
3013    checkpoint48c_pre
3014    o Added tidal_basin_2d experiment (currently 1D!)
3015    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3016    
3017    checkpoint48b_post
3018    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3019     (modification to pressure gradient not yet implemented)
3020    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3021      (for U & V) that are used for vertical advection of momentum.
3022    
3023    checkpoint48a_post
3024    o In preparation for r*, use temp. array to compute vertical transport
3025       in flux-form momentum pkg. => change results of few test-exp.
3026      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3027                        lab_sea, natl_box & plume_on_slope
3028    
3029    checkpoint48
3030    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3031    
3032    checkpoint47j_post
3033    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3034    o moved adexch from forward_step to addummy_in_stepping
3035    o added exch in ctrl_map_...
3036    o aveFreq.=0. at end of cost_final to avoid overwrite in
3037      reverse checkpointing loop
3038    o Yet more changes in gmredi:
3039      * adgmredi_calc_tensor
3040        avoiding all recomputation of gmredi_slope_limit
3041      * adgmredi_x/y/rtransport
3042        added flag for excessive storing to avoid recomp. of
3043        u/v/rtans, dTdx/y/z
3044        -> this is not really necessary and very memory-consuming
3045      * adgmredi_slope_psi:
3046        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3047      * gmredi_slope_limit
3048        re-activated full calculation of taperfct for case 'ac02'
3049    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3050    
3051    checkpoint47i_post
3052    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3053    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3054      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3055    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3056    o gmredi: fix few bugs.
3057    
3058    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3059    This will be a good checkpoint to plug into the ecco-branch.
3060    o few modif.'s to get latest version adjointed
3061      (mainly kick out code in ini_linear_phisurf)
3062    o modif's to run adjoint with exactConserv
3063    o case GM_BOLUS_ADVEC should be cleaned
3064      S/R gmredi_slope_psi should be cleaned
3065    o verification/carbon now has exactConserv=.TRUE.
3066    
3067    checkpoint47g_post
3068    o time-average AIM output: becomes independent from statvars time-average
3069      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3070    o After TAF bug fix:
3071      Tested adjoint of gmredi package.
3072      Tests were done with checkpoint47 rather than with latest
3073      checkpoint47f_post since the latter is broken for the adjoint
3074      verification/carbon/ contains both ADM and TLM gradient checks.
3075    Here they are, before they get changed/lost/stolen.
3076    Mostly modif.'s to fix numerical sensitivities.
3077    Gradient checks OK for
3078    - GM_taper_scheme:
3079      * clipping
3080      * ac02
3081      * linear
3082      * glw91
3083      * dm95
3084      * ldd97
3085    - GMREDI_OPTIONS:
3086      * GM_VISBECK_VARIABLE_K
3087      * GM_NON_UNITY_DIAGONAL
3088      * GM_EXTRA_DIAGONAL
3089      * GM_BOLUS_ADVEC
3090    in conjunction with data.gmredi parameters to be checked in
3091    in a few minutes under verification/carbon/code/
3092    
3093    checkpoint47f_post
3094    Merging from release1_p10:
3095    o modifications for using pkg/exf with pkg/seaice
3096      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3097        and SEAICE_EXTERNAL_FLUXES
3098      - pkg/exf CPP options EXF_READ_EVAP and
3099        EXF_NO_BULK_COMPUTATIONS
3100      - usage examples are Experiments 8 and 9 in
3101        verification/lab_sea/README
3102      - verification/lab_sea default experiment now uses
3103        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3104    
3105    checkpoint47e_post
3106    o created a tag prior to creating a branch
3107    
3108    checkpoint47d_post
3109    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3110      at the bottom boundary had an erroneous half slip boundary condition
3111    o added bottom drag and no slip boundary condition capabilities to
3112      oceanic pressure coordinates code
3113    o added new verification experiment global_ocean_pressure, this experiment is
3114      also described in the tutorial section of the manual
3115    checkpoint47d_pre
3116    
3117    checkpoint47c_post
3118    o Added a verification experiment for a global cubed-sphere ocean run
3119      -  verification/global_ocean.cubed32x32x30
3120      -  uses pkg/therm_seaice and pkg/bulk_forcing
3121    
3122    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3123    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3124      when using P-coordinate; only implemented for atmospheric config.
3125    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3126      NOTES: requires option NONLIN_FRSURF to be "#define".
3127    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3128    
3129    checkpoint47b_post
3130    Merging from release1_p9:
3131    o pkg/seaice
3132      - removed GOTO's and added taf directives
3133      - double precision constants to reduce the g77 (Linux)
3134        to F77 (SGI) differences reported in release1_p8
3135    o tools/genmake
3136      - added SGI options
3137    o verification/testscript
3138      - updated to that of checkpoint47a_post
3139    o verification/global_ocean.90x40x15/input/eedata
3140      - modified for SGI f77 compatibility
3141    o verification/lab_sea
3142      - added description of sea-ice model
3143      - added missing matlab routines
3144      - added test of thermodynamics parallelization
3145    
3146    checkpoint47a_post
3147    o new pkg: aim_v23
3148     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3149       for now, keep the same surface forcing as before.
3150     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3151     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3152     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3153    o add diagnostic of surface correction term in monitor output
3154    
3155    o bulk_force and therm_seaice
3156    - Two packages:  bulk_force (Bulk forcing)
3157      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3158    - Earlier integration from Stephaine Dutkiewicz
3159      and Patrick Heimbach.
3160    - Two ifdef statements for compile time,
3161       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3162    
3163    checkpoint47
3164    differentiable version of checkpoint46n_post
3165    o bug fix in quasihydrostaticterms
3166    o * "clean" adjoint code (in terms of extensive recomputations)
3167        can now be obtained for all GMREDI options (i.e. for
3168        - GM_VISBECK_VARIABLE_K
3169        - GM_NON_UNITY_DIAGONAL
3170        - GM_EXTRA_DIAGONAL
3171        - GM_BOLUS_ADVEC )
3172      * However, wrong gradient check problem remains unsolved.
3173      * New CPP options have been introduced for different
3174        tapering schemes
3175    o external_fields_load now part of differentiation list
3176    o pressure needs multiple storing;
3177      would be nice to have store_pressure at beginning or
3178      end of forward_step, e.g. by having phiHyd global (5-dim.)
3179      (NB: pressure is needed for certain cases in find_rho,
3180      which is also invoked through convective_adjustment).
3181    o recomputations in find_rho for cases
3182     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3183    o #define ATMOSPHERIC_LOADING should be differentiable
3184    o ini_forcing shifted to begining of initialise_varia
3185    o Incorporating QNVS line search routines into MITgcm
3186      (this is separate code, and therefore not under pkg)
3187      lsopt/, optim/
3188    o Updated verification/carbon/
3189      - #define GM_VISBECK_VARIABLE_K
3190      - GM_taper_scheme    = 'ldd97'    
3191    
3192    checkpoint46n_post
3193    Merging from release1_p8:
3194    o verification/natl_box:
3195      updating new external_fields_load routine
3196    o New package: pkg/seaice
3197      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3198      The sea-ice code is based on Hibler (1979-1980).
3199      Two sea-ice dynamic solvers, ADI and LSR, are included.
3200      In addition to computing prognostic sea-ice variables and diagnosing
3201      the forcing/external data fields that drive the ocean model,
3202      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3203      The implied surface heat flux is then stored in variable
3204      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3205      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3206      non-local transport term.  Because this call precedes model
3207      thermodynamics, temperature under sea-ice may not be "exactly" at
3208      the freezing point by the time theta is dumped or time-averaged.
3209      N.B.: fairly large differences in accuracy occur across
3210            different platforms/compilers; comparison between
3211            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3212            generated output gives:
3213       T           S           U           V
3214      C D M    c        m  s        m  s        m  s        m  s
3215      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3216      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3217      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3218    
3219      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3220    o GAD:
3221      - generated new common blocks to account for call of
3222        same gad routines with differing traceridentities
3223        (needed to modify tracerIdentity indices in GAD.h)
3224      - generated separate common blocks for case useCubedSphereExchange
3225        (Department of Futurology)
3226      - parameter lists to gmredi_?transport: added tracerIdentity
3227      - added new key indices to tamc.h
3228    o external_fields_load:
3229      - added this routine to TAF list
3230      - needed to make some common blocks global and additional storing
3231        along the same lines as exf package (checkpoint_lev?_directives.h)
3232    o exf:
3233      updated external forcing package
3234      - bug fixes carried over from ecco-branch
3235        (missing OBCS_OPTIONS.h in two routines)
3236      - enable easy to use "no forcing".
3237      - added exf I/O for atmospheric loading
3238      - added exf I/O for runoff data
3239      - transfered scaling between exf <-> MITgcm to exf namelist
3240    o Adding new verification experiment global_with_exf.
3241      This verification experiment is almost identical to the
3242      global_ocean.90x40x15 experiment, except that it uses
3243      the exf (and cal) package instead of the
3244      external_fields_load routine (cf README file).
3245    
3246    checkpoint46m_post
3247    o modified testscript to return -- when there are no lines of "%MON" output
3248    o added new flag "quasiHydrostatic" for QH mode
3249      and new routine quasihydrostaticterms()
3250    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3251      New routine: mom_u_coriolis_nh()
3252    o fixed sign of non-hydrostatic metric terms in u and v equations.
3253      Depend on correct sign of gravitySign.
3254    o added work.pc* to .cvsignore in aim directories using ifc
3255    o introduced flag for controllin non-hydrostatic metric terms
3256  o removed gravitySign from PARM04  o removed gravitySign from PARM04
3257  o switched to g77/ifc from pgf77 in aim experiments  o switched to g77/ifc from pgf77 in aim experiments
3258    

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