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revision 1.54 by jmc, Sat Oct 27 03:10:52 2001 UTC revision 1.990 by dfer, Fri May 9 22:39:42 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  next checkpoint  
7  o apply Shapiro filter on T&S before calc_PhiHyd (stagger time stepping)  o Freshen up a bit hs94.1x64x5, notably:
8      remove rotationPeriod and tRef=5*0. (adjoint only), and add exactConserv=.TRUE.
9    o pkg/generic_advdiff:
10      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
11      applies to files where Temperature & Salinity 2nd Order moments are used.
12    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
13      this uses a dynamically allocated internal state data structure
14      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
15      and requires a fortran 90 compiler
16    
17    checkpoint59q
18    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
19       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
20    o Refresh tutorial_global_oce_biogeo, notably:
21      - change bathymetry (put back seamounts in ACC, use hFacs)
22      - change EOS (POLY3 --> JMD95Z)
23      - use Bryan-Lewis vertical diffusivity
24      - use multidimensional advection
25      - remove old virtual virtual in dic pkg, now done through ptracer pkg
26      - change a couple of parameters in dic pkg
27    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
28    o pkg/obcs: change default to OBCSfixTopo = .true.,
29      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
30      - replace "debugMode" with "debugLevel .GE. debLevB"
31    o implementation of TAF directives for gchem,cfc,dic
32    o remove "exp5" (replaced by tutorial_deep_convection).
33    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
34      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
35      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
36      --> changes results in exp4, seaice_obcs
37    o tutorial_deep_convection :
38      update the set-up and increase resolution and domain size ; start
39      from pseudo initial conditions = output at t=120mn in order to see
40      something happening when running testreport.
41    o pkg/seaice: add os7mp as an advection scheme
42                  add check for advection schemes
43                  add a flag for restoring T and S underneath sea ice
44    o pkg/my82: add netcdf-support and diagnostics
45    o thsice pkg:
46      - Now hsMax limits snow height by turning it into ice following
47        flooding scheme (and now conserving energy)
48      - Slight rewriting of the formula in thsice_calc_thick.F
49      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
50      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
51    
52    checkpoint59p
53    o gchem / dic / cfc :
54      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
55      - add new parameter files: "data.dic" & "data.cfc" ;
56      - various re-arrangement in initialisation & header file ;
57      - fix tutorial_global_oce_biogeo for multi-threaded test.
58    o pkg/dic: test for "pickup_dic" file when restarting ;
59      if no pickup-file, can restart with a re-initialised pH (same as it did
60      before) providing pickupStrictlyMatch is set to False.
61    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
62      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
63    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
64      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
65    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
66     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
67       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
68    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
69       scheme to use for vorticty-term ;
70     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
71       (with default selectVortScheme, return to original discretisation)
72     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
73    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
74    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
75      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
76      also fix diagnostics VISCAHW & VISCA4W.
77    
78    checkpoint59o
79    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
80    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
81      move a few statemens out the main loop into separate loops
82    o pkg/shelfice:
83      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
84        (kg/m^2/s), does not break tests, because in verification/isomip,
85        rhoConstFresh=rhoConst (by accident)
86      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
87      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
88        new file model/src/seawater.F, so that they are available for all pkgs.
89      - convert potential temperature into in-situ temperature. This changes the
90        isomip tests => update tests
91    o add a flag writePickupAtEnd (default=true) to be able to suppress
92      writing a pickup at the last timestep
93    o tools/mpack-1.6 :
94      - disable automake (not working) and autoconf (not needed).
95      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
96        also cleaner with much less compilation warnings.
97    o pkg/profiles:
98      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
99      (for "less than 32 characters name" compiler requirement)
100    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
101      conditions that have a different sampling frequency than S/T/U/V obcs
102    o pkg/diagnostics (stats-diags):
103      - fix global Min/Max in case 1 processor get only empty tiles
104    o genmake2: replace (4 times)
105         make genmake_tc_1.o >> genmake_warnings 2>&1
106      with
107         COMM="$CC $CFLAGS -c genmake_tc_1.c"
108         echo $COMM >> genmake_warnings
109         $COMM >> genmake_warnings 2>&1
110      to make genmake2 always see the value of CC as specified in the optfile.
111    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
112      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
113      - modify verification advect_cs test to test SOM-advection on CS-grid.
114    o pkg/ctrl:
115      - Rewrite of ctrl_map_ini_ecco.F,
116        introducing a generic routine (ctrl_map_ini_gen.F).
117      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
118    
119    checkpoint59n
120    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
121      number in dedicate array "hdiag":
122      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
123        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
124      - many small changes (integer format) for large number of diagnostics
125      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
126        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
127    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
128      usingSphericalGrid, this allows to define the rotated grid coordinates
129      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
130      geographical coordinates according to the inverse of the rotation defined
131      by the Euler angles, so that Coriolis parameter and online-interpolation by
132      exf works with the geographical coordinates on XC/YC/XG/YG.
133      Naturally, this feature does not work with all packages, so some
134      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
135      profiles), because there the coordinates are assumed to be regular
136      spherical grid coordinates.
137    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
138      - introduce isopycnal diffusion coefficient control.
139    o tools/adjoint_options:
140      - additional control vector components.
141    o pkg/mnc: have mnc create marginally meaning full coordinate variables
142      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
143    o pkg/mypackage:
144      - add example of read/write pickup for state-var ;
145      - add entry points to the main code for state-vars diags & write-pickup.
146    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
147      transitions for useExfYearlyFields
148      - add new subroutine that determines the file to read from for
149        use*YearlyFields = .TRUE. and .FALSE.
150      - add a verification experiment to global_with_exf that tests
151        useExfYearlyFields with USE_EXF_INTERPOLATION defined
152    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
153      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
154      subroutines (which could be generated from a template, because they are
155      almost identical), for now they are included in obcs_prescribe_read.F for
156      simplicity
157    o pkg/exf:
158      - add a little more diagnostic to exf_interp_read (in analogy to
159        mds_read_field, can be turned off with debugLevel < debugLevA=1)
160      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
161        ugly but fast by unrolling short inner loops, inserting a unroll=8
162        directive in routine lagran, and splitting a loop and making do while the
163        outermost loop (the latter requires the intoduction of index arrays)
164    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
165    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
166      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
167    o verification/seaice_obcs: updated for restart test and latest options
168    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
169      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
170      for now this is only available for the C-grid code and also within
171      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
172    
173    checkpoint59m
174    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
175      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
176    o gad_som : fix flux output (& diagnostics) to have same units as other  
177      advection scheme fluxes (was previously multiplied by deltaT).  
178    o added verification/seaice_obcs both to test seaice open boundaries
179      and to provide an example matlab scrpt for generating them
180    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
181    o pkg/salt_plume: clean up salt_plume_frac.F to
182      remove redundancy in PlumeMethod 1 and 4
183    o pkg/kpp: added saltplume diagnostics
184    o pkg/obcs and pkg/seaice:
185      - do not set uice and vice to zero when OB*icefile are unspecified
186      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
187      - moved seaice tracer obcs after call to seaice_growth
188    o pkg/salt_plume: added various options for salt plume depth
189      criterion and for vertical distribution of the salt
190    
191    checkpoint59l
192    o pkg/ptracers: new version of ptracers pickup:
193      read meta file and write only fields which are needed to restart.
194      ( same logic as main pickup file ; also using pickupStrictlyMatch )
195    o pkg/seaice:
196      - add timescale for melting due to warm mixed layer as a means of
197        setting SEAICE_availHeatFrac more conveniently
198      - add a CPP-flag/runtime parameter check for flooding algorithm
199      - reformulated availHeat in seaice_growth.F to be independent of AREA
200    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
201      unit changes
202    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
203    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
204      SX vector computer.
205    o pkg/seaice:
206      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
207        seaice forcing fields can now be read only through pkg/exf
208      - removed some unused halos
209    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
210    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
211      or U/VICE from U/VWIND before computing U/VSTRESS
212    
213    checkpoint59k
214    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
215      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
216    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
217      all experiments pass when compile with un-initialised var. checking option.
218    o added pkg/salt_plume
219    o script to test restart (for now, in MITgcm_contrib/jmc_script)
220    o pkg/seaice: new read/write pickup version.
221      read meta file and write only fields which are needed to restart.
222      ( same logic as main pickup file ; also using pickupStrictlyMatch )
223    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
224    o lab_sea.hb87: modify the domain & update output.hb87.txt :
225      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
226      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
227      process. Fixed here by closing the domain at the Northern boundary.
228    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
229    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
230      a set of consecutive levels in/from a 3-D array.
231    o pkg/ptracers:
232      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
233      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
234    
235    checkpoint59j
236    o in pkgs: dic, obcs, offline, rbcs:
237      standard way to compute coeff. for time interpolation between 2 time reccords
238      which retains full precision (& make results less dependent on compiler).
239      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
240    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
241      packages instead of reading ice cover and wind speed separately
242    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
243     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
244      to allow to compile customized code before the update)
245    o cleaning-up:
246      - fix CPP instruction syntax in pkg/obcs
247      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
248        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
249      - fix some threads issue in IO parts.
250    o pkg/dic:
251      - add tons of "_d 0" (--> much better testreports !)
252       and then update outputs of tutorial_global_oce_biogeo
253    o pkg/mom_fluxform:
254      add a special version of momentum advection intended to conserve momentum
255      next to a bathymetry step or a coastline edge. (default = off = #undef)
256    o new read/write pickup version:
257      - for now, only implemented for main (mdsio) pickup file.
258      - write out only what is needed to restart; merge pickup_nh , pickup_ph
259        and main pickup together.
260      - read meta file; read only what is needed to restart; stop if a field
261        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
262        if it make sense (even if the restart is not perfect).
263      - if no meta file, assume that pickup to read corresponds exactly to
264        a pickup that would currently be written.
265      - read pickup written in the old format (until checkpoint59i) if it
266        recognizes an old meta file (no field-list).
267      - add a meta file in exp. which starts from a pickup: 2 cases:
268        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
269         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
270        b) a meta file describing the content of the associated pickup file
271         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
272    o pkg/mdsio & pkg/rw:
273      - new routine to read a meta file ; new set of routine to read
274        Multiple-fields file (with meta file).
275    o added open boundary conditions capability for seaice
276        HSNOW, HSALT, UICE, and VICE
277    
278    checkpoint59i
279    o adjoint:
280      * fix multiDimAdvection adjoint
281        (partial recomputation problem by TAF for fVerT(:,:,kDown)
282        and comlev1 size definition (maxpass vs. max. number of tracers)
283      * verification/global_ocean.90x45x15 adjoint now tests
284        NLFS and multiDimAdvection using DST3 (=30)
285      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
286    o pkg/kpp: add "_d 0" to real constant (if missing);
287      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
288      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
289    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
290      for internal parameters related to restart process (formerly from PARAMS.h)
291      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
292    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
293      as argument. (only atm2d & obcs write_pickup have not yet been updated)
294    o pkg/monitor:
295      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
296      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
297      - account for deep Atmosphere factor and density factor (anelastic)
298    o added open boundary conditions capability for seaice HEFF and AREA
299    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
300      thermodynamics
301      - requires a little reorganization, which affects the testreport results
302        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
303        so that now the conservative form is tested
304      - add a few comments
305    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
306    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
307    o add new diagnostics to seaice: advective, diffusive fluxes (only for
308      multidim-advection, for scheme 2 they are not filled) and transports,
309      thermodynamic growth rates
310    o change units of EmPmR (inside the code, + within coupling interface)
311      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
312      Affects results @ truncation level (cg2d match) and update output of
313       experiments: lab_sea(6), global_ocean.90x40x15(10),
314      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
315      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
316      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
317      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
318    
319    checkpoint59h
320    o pkg/exf:
321      - improve vectorization by moving if-statement out of loops in
322        exf_mapfields, exf_radiation
323      - exf_bulkformulae.F: introduce 2D fields and vectorize code
324    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
325    o testreport:
326      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
327        monitor & update offline_exf_seaice exp. output.
328      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
329    o pkg/seaice:
330      - bug fix in the evp solver: boundary conditions were affected be
331        masking of zMax/zMin (changes results)
332      - minor bug fix in boundary conditions in seaice_calc_strainrates
333        (changes results for no_slip)
334      - seaice_lsr.F: make interpolation of eta dependent on boundaries
335      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
336      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
337        stress formulation and no-slip boundary conditions
338    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
339      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
340    o pkg/seaice: a first HSALT time stepping equation has been checked in
341    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
342      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
343      without requiring DO-IF statements
344    o pkg/thsice:
345      use continuous power-law function for partition of energy between lateral
346      melting/freezing and thinning/thickening ; old code using step function
347      still available with #undef THSICE_FRACEN_POWERLAW
348      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
349    o testreport: change AD testing : check against results/output_adm.txt
350      using same scripts as for forward test.
351    
352    checkpoint59g
353    o adjoint testing: in preparation for changing testreport:
354      - output format: cost and grad written on separated lines
355      - ad output results in directory "results" (instead of "results_ad")
356    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
357    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
358    o pkg/ecco: allow user defined cost function contributions
359    o testreport:
360      Allow to choose (per experiment) the list of tested output variables
361       and the main variable (used to issue a pass/FAIL ) ;
362      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
363      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
364      Also modify printing of summary:
365       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
366       b) echo the list of tested variables in the individual summary.txt of
367          each experiment.
368    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
369      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
370      (but still depend on the tile decompostion of the domain).
371    o pkg/seaice: change a discretization detail to make the B-grid code
372      "more symmetric". This change is likely to remove all "ridges/leads" that
373      where quasi-aligned with the grid in B-grid solutions. It may also be
374      the solution to the stress coupling issues with the B-grid.
375    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
376      remove .cvsignore from input dir. (since testreport no longer run here).
377    o pkg/thsice:
378     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
379     - fix reshaping of sea-ice just after advection:
380       melt all the ice only if ice-volume is too small.
381     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
382       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
383     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
384    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
385      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
386    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
387      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
388      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
389      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
390      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
391      -> update output.txt
392    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
393     this affects truncation error: -> update output.txt of exp:
394      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
395      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
396    
397    checkpoint59f
398    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
399    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
400      a bounded range (in forward mode)
401    o pkg/ecco, ctrl, autodiff and mom_common:
402     internal parameter controls, completements of implementations
403    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
404    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
405      (not seem any difference in testing results).
406    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
407       at face corners.
408    o pkg/generic_advdiff:
409     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
410      loop range indices for computing vertical advection tendency
411      and do the calculation in the interior only (no overlap) ;
412      for now, only implemented for SOM advection (to save CPU time).
413     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
414    o exch2 adjoint
415      First set of changes:
416      - add exch2 hand-written adjoint templates
417      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
418        This will require cleanup in pkg/autodiff/*.F
419        (changed routines currently kept separate in verif. code/)
420      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
421        that used to hide exch2 or cubed-sphere specific code
422        (commented via 'cph-exch2')
423    o pkg/seaice
424      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
425    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
426       output of global_ocean.cs32x15.thsice .
427    
428    checkpoint59e
429    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
430      for B-grid vector (not yet tested) and C-grid vector (<- only used
431      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
432    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
433      (#ifdef ALLOW_SALT_PLUME)
434    o gather_2d/scatter_2d: removed halo regions
435    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
436      scheme and the corresponding test case (under front_relax dir). For now,
437      only available with Skew-flux form and not yet tested in realistic set-up.
438      adjoint: store directives updated, but gradient checks deteriorated,
439      so maybe GM/Redi adjoint is now broken.
440    o seaice adjoint
441      * add AREA, HEFF, HSNOW as control variable
442        (should not change lab_sea results)
443      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
444    o pkg/seaice:
445      * added computation of saltFlux in seaice_growth;
446        For time being, sea ice salinity is assumed constant
447        contribution of snow flooding to freshening of sea ice is neglected.
448        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
449        defaults to 0.0 in order to maintain backward compatibility.
450        Typical values for SEAICE_salinity are 4 to 10 g/kg.
451      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
452      * added SEAICE_availHeatFrac, which specifies fraction of surface level
453        heat content used to melt or grow ice
454      * commented out cap of HICE: it helps keep ice thinner
455      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
456      * applied OBCS T/S mask to HEFFM sea ice mask
457    
458    checkpoint59d
459    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
460     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
461     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
462    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
463     and change default value of parameter "GM_Small_Number";
464     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
465       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
466       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
467    o pkg/ecco: cost function when applying pkg/smooth to controls
468    o pkg/ctrl: add forcingPrecond run time parameter
469    o pkg/seaice:
470     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
471     - fix bug in metric terms of u-equation in LSR solver (implicit part),
472       changes verification/lab_sea
473     - rearrange implicit part of u-equation in LSR solver to make it easier to
474       read, understand, and debug. This causes changes at the truncation level.
475     - fix (serious) bug in the boundary conditions (sign error in the implicit
476       part) of the LSR solver. Changes all LSR results.
477     - fixed problem with HSNOW initialization to avoid thick snow when AREA
478       is initilized with small values - does not change lab_sea results.
479     - added HsnowFile initialization capability
480    o pkg/smooth: addition to model/src and pkg/ctrl so allow
481     initialization of pkg/smooth and application to control vector
482    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
483    o dependencies: pkg/profiles requires pkg/cal
484    o pkg/profiles:
485     - added option ALLOW_PROFILES_GENERICGRID
486         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
487         that interpolation information (grid points and coefficients) is provided
488         within the netcdf input files.
489         -> sample matlab scripts can be found in MITgcm_contrib/gael
490         that allow you to prepare netcdf input files.
491     - also modified: cleaner include statements, cleaner error print statements,
492       cleaner stops when error, and more tests of the netcdf input files consistency.
493    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
494    o pkg/seaice:
495     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
496       requires a new routine: seaice_diagnostics_fill.F
497     - make sure that seaice does not move if not forced (pressure replacement
498       method, Hibler and Ip, 1995), changes results
499     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
500     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
501       It is turned off by default (=-1.), because it changes the results.
502     - make it possible to read AREA from a file, too.
503    
504    checkpoint59c
505    o add S/R and diagnostics for oceanic mixed-layer depth
506    o move GMRedi call after all vertical mixing schemes (including KPP)
507    o pkg/thsice:
508     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
509      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
510    o pkg/obcs:
511     - bug fix for balance code
512    o pkg/seaice:
513      - allow values of SEAICE_elasticParm > 1
514      - add new parameter SEAICE_evpTauRelax as an alternative
515        to SEAICE_elasticParm
516      - make lsr boundary conditions free slip (by default), changes result
517      - add code for no slip boundary conditions for lsr
518      - set minimum of zeta to zero (and not 4e8) (changes results)
519      - add a cap on AREA after advecting AREA if seaice_growth is not called
520    o change calculation of Visbeck K:
521      - no longer depend on tapering scheme; instead, compute slope (limited
522        by GM_maxSlope). this is equivalent to what was comuted before with
523        clipping or linear tappering.
524      - fix vertical averaging (wrong by 1/2 level)
525      - leave the old version (but will not be maintained) within
526        #ifdef OLD_VISBECK_CALC / #endif
527      - update output of exp. ideal_2D_oce
528    o change error catch in calc_r_star to improve vectorization
529    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
530      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
531    o adjoint:
532      Re-organized adjoint checkpointing according to Matt Mazloff
533      (but with modifs/completions/cleanups)
534      Storing is now bundled into large arrays to optimized I/O
535      (and second step in cleanup of the_main_loop)
536    
537    checkpoint59b
538    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
539      - export/import (between ocean & coupler) fields needed for ocean DIC.
540    o pkg/seaice:
541      - get rid of three more exchanges seaice_calc_viscosities (required
542        different loop boundaries in seaice_lsr and seaice_ocean_stress)
543      - bug fix in seaice_ocean_stress (update of lab_sea required)
544      - reduce loop boundaries to necessary minimum also in seaice_evp
545      - go back to the old way of computing deltaC/Z as the adjoint likes that
546        better
547    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
548      passive tracer to an Age Tracer) + update output.txt
549    o pkg/exf:
550      - implement A-grid / C-grid selection for wind-stress input files.
551      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
552      for now, in exf_bulk_largeyeager04.F only :
553      - change implementation for case where windspeed + 2. components wind-stress
554        are read-in. AND use rhoConstFresh to convert evap.
555    o pkg/seaice:
556      - use correct EXCH_UV for wind-forcing (on A-grid).
557      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
558        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
559    o pkg/exf:
560      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
561      EXF_INTERPOLATION:
562      - merge global_with_exf/code version of exf_interp_read.F
563        to the main code ;
564      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
565        reading the file ; Important: This options needs to be defined to recover
566        previous code.
567        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
568      - no longer loose real*8 precision along the way when using exf_iprec=64.
569    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
570      - change discretisation of evp-solver in order to avoid another exchange
571        (changes lab_sea) and clean up a little
572      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
573        help the adjoint (this also changes the results slightly)
574      - add a few "_d 0" where they had been missing in seaice_evp.F
575      - cleaning up: remove unused seaice_calc_rhs.F
576    o pkg/exf: some cleaning-up:
577      - change various "constants" into runtime parameters
578      - cleaned-up Large&Yeager04 routine which should eventually
579        replace exf_bulkformulae.F (changed names of S/R and CPP)
580        and merged various ALLOW_ATM_WIND options
581     only used with thsice pkg (in thsice_get_exf.F):
582      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
583        which are used when useStabilityFct_overIce=TRUE (= the default)
584      - change default values of ice & snow emissivity and scale downward LW
585        by ice & snow emissivity.
586    o pkg/thsice:
587     fix few little problems, in thsice_calc_thickn.F:
588      - growth vertically (and not laterally) if iceFrac == iceMaskMax
589      - melt only laterally if hIce < hThinIce (as the comments say)
590      and in thsice_extend.F:
591      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
592      - start to form ice as soon as the minimum ice-volume is reachable.
593     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
594      and cpl_aim+ocn
595    o pkg/kpp
596     - move computation of surface related input fields to KPP into a new
597       subroutine kpp_forcing_surf.F
598     - remove wrong (within bi,bj loops) EXCH calls.
599     - little cleaning (add argument myThid in last position, cvs header ...)
600     - for now, fix conservation problem by exchanging KPPviscAz (may not
601       be the best fix)
602    o pkg/seaice
603     - check for inconsistent evp parameter/cpp-flag combination
604     - remove leftover errIO flat for obsolete name list error handling
605    o OpenAD
606     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
607    
608    checkpoint59a
609    o pkg/seaice: some parameter clarifications and a little bit of clean up
610    o pkg/thsice: rename run-time parameters:
611       himin       -> hIceMin
612       himin0      -> hThinIce
613       hihig       -> hThickIce
614       i0          -> i0swFrac
615       transCoef   -> bMeltCoef
616       frac_energy -> fracMelting
617      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
618       with default values (for now) that do not change the results.
619      remove old version of thsice vars advection in pkg/seaice.
620    o in FFIELDS.h:
621      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
622      - make pLoad & sIceLoad always available (but still only used if
623         ATMOSPHERIC_LOADING is #define).
624    o pkg/kpp: replaced _KPP_RL with _RL
625    o bug fixes for vertical diffusivity computations when both KPP and
626        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
627        are no longer updating the vertical diffusivity array
628        (passed as argument) but are (re-) setting those arrays.
629    o pkg/seaice: fix bug in evp solver, while doing that
630      - change (improve?) discretization of stress computations for both
631        cgrid-lsr and evp solver
632      - add a new routine to compute strain rates
633      - the above changes lab_sea results
634      - add no slip conditions for evp solver (off by default), lsr-version
635        may follow
636      - fix exchange for shear at Z-points (does not change lab_sea)
637      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
638        (to force the user to pick a time step since there is not "safe" way
639        of choosing it)
640      - add principal stress diagnostics
641      - rearrange fields for evp a little to avoid having to call a: too many
642        exchanges and b: exchanges for stress trensor components which we do
643        not have.
644      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
645        of evp, complete rewrite for lsr case (latter is does not yet work
646        in all cases)
647    o pkg/kpp: add code to have mixing in shelf ice caverns
648      - add myThid to all kpp routines (long overdue)
649    
650    checkpoint59
651    o pkg/exf:
652      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
653        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
654      - move exf header files from lower_case.h to UPPER_CASE.h ;
655        add missing cvs Header & Name
656      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
657      - add namelist param. selectStressGridPosition, exf_monFreq
658      - retire many _CLIM routines, and remove data.exf_clim
659        + params moved to data.exf
660        + climsst, climsss now handled by exf_set_gen, i.e.
661          climss?period=0 refers to constant field,
662          climss?period=-12 to monthly forcing
663      - split up namelists in data.exf
664    o pkg/seaice:
665      - remove seaice_exch and seaice_exch_uv
666      - remove superfluous exchange of theta
667      - add myThid to seaice_budget_ocean/ice
668      - add new interface for atmospheric wind forcing (C-grid only)
669        + new routine
670        + two new field (taux, tauy for stress over ice)
671        + removed one global field (DAIRN) for C-grid case only
672    o pkg/thsise
673      - 2nd set of modifs for thsice adjoint in conjunction with exf
674    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
675    
676    checkpoint58y_post
677    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
678      vertical diffusivity, similar to that in MOM4; turned on using
679      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
680      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
681    o Added capability for 3D specification of background vertical diffusion
682      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
683      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
684      "data" file that contains the 3D vertical diffusivity coefficients.
685    o ice dynamics (pkg/seaice) with thsice thermodynamics:
686      - add code within pkg thsice to advect & diffuse sea-ice fields
687      similar to (and will replace) what has been added in  seaice_advdiff.F,
688      but: - conserving Mass, Heat & Salt.
689           - better when using non-linear advection scheme (not yet fully tested)
690           - can also be used in atmospheric set-up (for now, only the diffusion).
691    
692    checkpoint58x_post
693    o IO option for global-file compact format:
694      - add options when generating topology (utils/exch2/matlab-topology-generator)
695      - add I/O capability (pkg/mdsio).
696      - adapt utils/matlab/rdmds.m to read this format.
697      for now long-line format not yet supported by pkg/mdsio (& exch2).
698    o shelfice: add a few diagnostics
699    
700    checkpoint58w_post
701    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
702      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
703      (and replace horiVertRatio in NH code).
704      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
705                         and tutorial_plume_on_slope (sensitive to truncation)
706    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
707      directly to drive seaice model (C-grid only)
708    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
709     - reintroduce computation of wind from stress,
710     - compute tau (in exf_bulkformulae.F) from windstress averaged to
711       mass points to avoid tau = 0
712     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
713    o rdmnc.m: make it work with "global" files created with gluemnc
714    o rdmnc.m : some improvements in dealing with singleton dimension
715      (tested on all testreport mnc output files).
716    o genmake2: disable pkg/profiles if netcdf test fails.
717    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
718    o move call to cal_readparms up to make calendar parameters/variable available
719      to all packages
720    
721    checkpoint58v_post
722    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
723      useDynP_inEos_Zc tested.
724    o pkg/exf: changes to properly interpolate/mask/scale initial fields
725    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
726      and portions thereof.  See read_cs.txt for description and examples.
727    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
728      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
729      following the great-circle arc between those 2 points.
730    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
731      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
732    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
733     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
734     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
735     - still needs work (not working with some options ; efficiency to improve)
736       and serious testing.
737     - use this scheme for temperature & salinity in 2 advection test exp.:
738       advect_xy & advect_xz, respectively.
739    
740    checkpoint58u_post
741    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
742    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
743    o testreport: add option "-skipdir" to skip some test.
744    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
745      momentum calculation.
746    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
747    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
748      remove checkpoint.F and the_correction_step.F (no longer used);
749      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
750    o add option (linFSConserveTr) to correct for tracer source/sink due to
751      Linear Free surface
752    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
753    o pkg/thsice: fix reading mnc-pickups
754    
755    checkpoint58t_post
756    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
757    o pkg/mdsio:
758     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
759       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
760       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
761     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
762     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
763       either MDS_READ_FIELD or MDS_WRITE_FIELD )
764     - new S/R (to replace MDSWRITEMETA), which allows to write more
765       informations (variable names, time ...) to meta files.
766     - modify rdmds.m to give back the meta file content.
767    o pkg/diagnostics: change vertical interpolation to be safer, and more
768       flexible (define p-levels to interpolate to in data.diagnostics);
769      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
770       diagnostic pointer.
771    o pkg/seaice: more cleaning up of seaice_growth, added many comments
772    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
773    o fix multi-category seaice:
774     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
775       SEAICE_MULTICATEGORY
776     - fix short wave heat flux
777    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
778       and allow to use EVP solver. Change forward lab_sea: test both EVP
779       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
780    o Initial check-in of lab_sea adjoint
781      (very similar to natl_box_adjoint/code_seaice)
782      * used C-grid and EVP solver
783      * used KPP, GM/Redi
784      * uses inAdExact=.TRUE.
785      * gradient checks fail for both ADM and TLM
786        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
787        f.d. gradients actually seem more problematic than ADM, TLM gradients;
788        issue is related to forward mismatch between g77 an ifort
789    o pkg/seaice: overhaul of thermodynamics
790     - growth.F and groatb.F are replaced by new routine seaice_growth.F
791     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
792     - move a few global fields out of SEAICE.h into seaice_growth.F and
793       make them 2D (FICE/QNETO/ ...)
794     - remove FO (it is the same as QNETO)
795     - introduce a few local fields to avoid modifying external fields such
796       as atemp, etc.
797    
798    checkpoint58s_post
799    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
800      changed exf_set_gen.F so that
801        genperiod=0 means input file is one time-constant field and
802        genperiod=-12 means input file contains 12 monthly means
803    o CG2D: use pre-computed solver main-diagonal (stored in common block);
804      this affects truncation error ; generate new output file for exp. which
805      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
806        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
807        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
808        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
809        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
810        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
811    o start implementation of deep-atmosphere and anelastic formulation
812    o verification: remove 2nd copy of input files and use script "prepare_run"
813      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
814    o mom_common/vecinv/fluxform: fix a few initialisation isssues
815    o profiles: fix for multithreaded case
816    
817    o diagnostics: rename few diags:
818      s/'PRESSURE'/'RCENTER '/g
819      s/'TICE    '/'oceFreez'/g
820      s/'TAUX    '/'oceTAUX '/g
821      s/'TAUY    '/'oceTAUY '/g
822      s/'SWFLUX  '/'oceQsw  '/g
823      s/DIFx/DFxE/g
824      s/DIFy/DFyE/g
825      and add few ocean-forcing diagnostics:
826      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
827    o modifications to pkg/seaice/growth.F and budget.F, which change results of
828      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
829      as actual snow thickness.  It now refers everywhere to effective snow
830      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
831    
832    checkpoint58r_post
833    o modifications to pkg/seaice/growth.F, which change results of
834      lab_sea experiment: fixes pertain to melting snow over open water, to
835      masking EVAP under sea ice, and to using the correct AREA variable for
836      computations of EVAP, PRECIP, HSNOW, and GHEFF
837    o add ability to read bathy, salt, and theta using MNC (off by def)
838    o add flooding algorithm and advection of HSNOW for pkg/seaice;
839      both are turned off by default and do no change any results
840    o seaice advection with pkg/thsice: a step toward the use of non-linear
841      advection scheme, but #ifdef or commented out for now (requires more EXCH).
842    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
843      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
844      in natl_box (affects results @ truncation level: update output.txt)
845    o multi-threading and IO:
846      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
847      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
848        (needed to work with SingleCpuIO): tested in all verif. exp.
849    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
850      affects the results (but none of the verification test uses this scheme).
851    o Adding some pkg/diagnostics capability to pkg/seaice
852      (will certainly be subject to changes)
853    o ctrl: adding new control variables:
854      lwflux, lwdown, evap, snowprecip, apressure, runoff
855    
856    checkpoint58q_post
857    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
858      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
859      high_res_cube configuration by 4% on Columbia.
860    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
861      add (in global_with_exf/code) a version of EXF_INTERP_READ without
862      dynamical allocation (seems to work in multi-threaded).
863    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
864      single CPU io) so that TAF does not have to see EESUPPORT.h
865    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
866    
867    checkpoint58p_post
868    o obcs: stop if obcs is used with useCDscheme = .true.
869    o shelfice:
870     - fix a sign error so that no slip at shelfice interface works
871     - remove stop for combination non-hydrostatic code and shelfice. That does
872       not mean, that the results are correct, but at least they are numerically
873       stable
874    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
875    o added adjoint exch routined for all exch*3d* routines
876      and updated flow directives
877    
878    checkpoint58o_post
879    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
880      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
881    o change controling S/R for writing pickup file (new S/R do_write_pickup)
882      and clean-up reading/writing of pickup files.
883    o fix local version of read/write pickup (NH part) in rotating_tank/code
884    o simplify EXCH interface:
885     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
886     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
887    o added the regrid package
888    o shelfice:
889     - add a simple boundary layer scheme to reduce noise
890     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
891    
892    checkpoint58n_post
893    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
894       local variable (not in common block).
895    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
896      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
897      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
898        to work with SingleCpuIO.
899    o add "_d 0" to real constant of pkg/cfc subroutines ;
900       update exp. cfc_exemple & tutorial_cfc_offline output files.
901    o multi-threading and IO:
902      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
903        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
904      - barrier before and after reading.
905      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
906      - avoid using MDS_WRITELOCAL for LAND pkg output.
907      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
908        common-block variables ; Allows multi-threading with master-thread IO.
909    o change default MAX_NO_THREADS from 32 to 4 ;
910      and stop cleanly when MAX_NO_THREADS is too small.
911    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
912    
913    checkpoint58m_post
914    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
915       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
916    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
917       keep global_ocean.90x40x15 (for AD testing) with former secondary test
918       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
919    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
920        add MITgcm_tutorials (= code + all the tutorials)
921    o ecco, option to compute cost for total ssh (mean+anom)
922    o consistent with addition of ptracer and ssh in pkg/profiles
923    o profiles: adding ptracer and ssh
924    o testreport: change multi-test output-file name
925      (from output.txt.{name} to output.{name}.txt)
926    o profiles: now ok for mutli-tiles case
927    o seaice: add 4 parameters for different advection schemes for area,
928      (effective) seaice thickness, enthalphy, and snow height. Their default
929      is the standard parameter SEAICEadvScheme
930    o calc_gw:
931     - add cosFacU in zonal viscous flux (harmonic.visc.).
932     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
933       of tutorial_plume_on_slope.
934    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
935    o calc_gw: true flux-form, account for horizontal grid spacing.
936      update rotating_tank results, but not plume_on_slope (affected at
937      truncation level, 11 digits).
938    
939    checkpoint58l_post
940    o calc_gw:
941     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
942     - remove side-drag for now (need to fix it); update plume_on_slope results.
943     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
944    o commit code to make SST/SSS weights spatially variable
945      (based on either variable in-situ or variable initial T/S weights)
946    o pkg/ecco:
947      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
948        now based on horizontally varying weights wthetaLev, wsaltLev
949      * cost_averagesflags now returns year indices in addition to day, month
950      * sflux balance is performed on annual basis
951        (sflxumm, sfluxmm2, bal_sfluxmm)
952      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
953        including separate counting and multipliers
954    o pkg/rbcs
955      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
956    
957    checkpoint58k_post
958    o testreport:
959     - always build in dir. "build" (if not there, mkdir build instead of building
960       & running in input)
961     - run in dir run (if it exists), in build otherwise.
962     - call prepare_run (if input/prepare_run exists)
963     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
964    o pkg/exf modifications to interpolation and rotation routines for more
965       reasonable treatment of North Pole singularity: for tracers North Pole
966       value is set to northernmost zonal-mean value, for zonal velocity it is
967       set to zero, and for meridional velocity it is set to northernmost value.
968    o pkg/exf/exf_check_range.F
969     - add tile index to diagnostics and move stop statement to the very
970       end of the routine.
971    o pkg/diagnostics: (diagnostics_main_init.F)
972      define title of isomorphic variables according to the current config.
973    o pkg/thsice with pkg/seaice dynamics:
974    - fix domain of computation (interior only, required for exf) and do exchanges
975    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
976    o towards a standard way of dealing with multi-threading in MONITOR
977      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
978    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
979       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
980    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
981    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
982    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
983       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
984    o tracer advection:
985     - clean-up and simplify calc_common_factors.F
986     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
987       advection subroutine (but still not used within DST advection S/R)
988    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
989    
990    checkpoint58j_post
991    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
992      from file (collects calls previously in FORWARD_STEP)
993    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
994    o adjoint store dir. adjusted accordingly
995    o genmake2
996      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
997    
998    checkpoint58i_post
999    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1000      on wind stress (SEAICEstressFactor defaults to 1.)
1001    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1002      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1003    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1004      on CS-grid: no longer loosing mass.
1005    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1006    o pkg/ggl90: fix sloppy output and fix a bug
1007    o pkg/seaice: added SEAICEuseEVPpickup parameter
1008      - Set to false in order to start EVP solver with
1009        non-EVP pickup files when using SEAICEuseEVP
1010      - fix sign error in diffusion in seaice_calc_rhs
1011    
1012    checkpoint58h_post
1013    * Modifications for bottom topography control
1014      o replace hFacC by _hFacC at various places
1015      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1016      o add non-self-adjoint cg2d_nsa
1017      o update autodiff support routines
1018      o re-initialise hfac after ctrl_depth_ini
1019      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1020    * Adding verification for 5x5 box (4-layer) bottom topography control
1021    
1022    checkpoint58g_post
1023    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1024       used for mean seasonal cycle, mean diurnal cycle); add an example
1025       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1026    o pkg/ggl90:
1027      - add parameter (minimum surface kinetic energy)
1028      - fix bug (avoiding division by zero)
1029    o couple pkg/thsice to pkg/seaice:
1030      - modify advection in seaice to accomodate new scalar fields to be advected
1031      - only muliDimAdection scheme work with seaice/thsice
1032      - mapping of thsice-variables to seaice-variables, back and forth
1033      - does not break the verification experiments, but does not give the
1034        desired results either
1035    o pkg/seaice
1036      - make (default) second order advection a bit less confusing?
1037    
1038    checkpoint58f_post
1039    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1040      to pkg/seaice):
1041      - new routines thsice_map_exf and thsice_get_exf provide the interface
1042      - add an additional formal parameter to thsice_solve4temp
1043    o pkg/exf:
1044      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1045      - correct Stefan-Boltzmann constant
1046      - new parameter for longwave surface emittance
1047      - separate some stuff from exf_bulkformulae into new routines  
1048        exf_radiation, exf_wind
1049      - add new parameters and constants: longwave emissivity for ocean, ice
1050        and snow, evaporation parameters over ice
1051      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1052        either wind from stress or stress from wind
1053    o pkg/thSIce:
1054    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1055    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1056       and THSICE_CALC_THICKN
1057    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1058    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1059      to make debugging easier.
1060    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1061    o pkg/bulk_force:
1062      - clean-up comments and parameters ;
1063      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1064    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1065      generate new output for test-experiment: aim.5l_cs.thSI
1066    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1067      testreport accordingly
1068    
1069    checkpoint58e_post
1070    o SEAICE_CGRID adjoint done
1071    o R_STAR adjoint implemented.
1072      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1073      * need to sort out init. of h0facc, etc.
1074    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1075      to be able to use it in pure forward.
1076    
1077    checkpoint58d_post
1078    o upgrade simple test-experiment to tutorial example:
1079     step.1: duplicate the experiment and (step.2) will remove the old copy.
1080      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1081      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1082      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1083      tutorial_global_oce_biogeo    <- copy of dic_example
1084      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1085      tutorial_plume_on_slope       <- copy of plume_on_slope
1086      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1087      tutorial_global_oce_optim     <- empty for now (David ?)
1088      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1089     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1090    o correct a sign problem in cost_scat.F
1091    o obcs and ptracers: fix boundary conditions for advections schemes
1092      with larger stencil
1093    o thsice adjoint: start
1094    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1095      completeness
1096    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1097      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1098    o ptracers adjoint:
1099      * avoid extensive recomputatations
1100      * fix missing re-init. of gptr (missed by TAF)
1101    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1102      me to turn off the excessive output to STDOUT that this package produces
1103    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1104      and add those terms in Vector-Invariant formulation.
1105    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1106      if the control period (xx_hfluxperiod etc) is 0
1107    o in profiles pkg, clean routines and fix details
1108    o in ecco pkg, reading ssh data:
1109      fix problem in case the model does not start at iter0=0
1110    o fix mnc-pickup/restart for ptracers
1111    o new package prifiles:
1112      code to compute profile-based cost by Gael Forget
1113      (modifs in ecco, ctrl, autodiff)
1114    o Benign bug fix in initialization (spotted by M. Mazloff) of
1115      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1116    
1117    checkpoint58c_post
1118    o adjoint: finish NLFS adjoint and provide reference output in
1119      verification/global_ocean.90x40x15/results_ad_nlfs
1120    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1121      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1122      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1123      with SEAICE_CGRID defined.
1124    o move calendarDumps from "data" to "data.cal" and clean-up the code
1125      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1126    o add useEXF & useCAL flags (for now, set in hard-coded way)
1127    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1128      (were missing in NH mode, and wrong in quasihydrostatic mode).
1129      waiting for Chris updated version of calc_gw to add those CALLs.
1130    o fix bug in quasihydrostatic S/R ;
1131      add a test for this option: global_ocean.90x40x15.qshyd
1132    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1133      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1134    o add on/off flag useOffLine for package OFFLINE
1135    o seaice:
1136      - modify advection so that it works also on the C-grid
1137      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1138        problem in multi-tile runs with C-grid
1139      - add flags for clipping ice velocities and/or masking solver forcing
1140      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1141        C-grid solver
1142      - added a few comments to seaice_diffusion.F
1143      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1144        are now exclusive)
1145      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1146        required re-ordering the code a little:
1147       + make DAIRN global variable (defined in SEAICE)
1148       + move computation of the viscosities eta and zeta into a new separate
1149         routine (because I need to recompute them in seaice_ocean_stress.F)
1150    
1151    checkpoint58b_post
1152    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1153      update output.txt of exp. aim.5l_cs.thSI
1154    o various mnc cleanups and improvements:
1155      + shrink lookup tables by factor of ~4
1156      + better error reporting when running out of lookup space
1157      + able to handle longer path/file names (up to 500 chars)
1158    o adjoint:
1159      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1160      - TBD: "hidden" mom_vecinv recomp. in dynamics
1161    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1162     (allow to differentiate between forcing components using new integer flags:
1163      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1164     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1165    o ecco
1166      - enable trend removal from SSH anomaly obs.
1167    o adjoint
1168      - a fix for PmEpR when #undef EXACT_CONSERV
1169      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1170      - try to fix "hidden" recomp. in forward_step for NLFS
1171        (NLFS seems broken sometimes after I checked it in)
1172    o seaice:
1173     - add c-grid version of the dynamic solver:
1174       + three new routines that are the c-grid substitute lsr, dynsolver
1175         and ostres
1176       + put a few fields that were local to dynsolver into global common
1177         blocks, so that I can move the computation of stresses etc into
1178         seaice_lsr (saves coding but may break the adjoint).
1179     - replace more hardwired parameters by runtime parameters
1180     - add ice masks that mask the rhs of the implicit solvers where there
1181       is no ice (commented out in seaice_dynsolver, because i am not sure
1182       if this works properly), eventually this should replace the clipping
1183       of ice velocities in seaice_dynsolver to +/-40cm/s.
1184    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1185      include it only where its needed
1186    o move balancing of fluxes before the call of external_forcing_surf
1187    o seaice:
1188      - correct units of turning angles (now they are really in degrees)
1189      - move computation of GWATX/Y out of main routine into dynsolver
1190      - initialize GWATX/Y in seaice_init
1191    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1192      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1193    o seaice: add runtime flags for turning angles (default to zero)
1194    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1195      and trend from exf forcing and ctrl control adjustments
1196    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1197      (since checkpoint57x_post)
1198    o change the default rotation period to 86164.s = the Earth rotation
1199    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1200      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1201    o seaice advection: add code for choosing between the default (2nd order
1202      central differences) and multiDim advection schemes provided by
1203      pkg/generic_advdiff
1204    o seaice:
1205      - removed all references to SEAICE_GRID.h fields from
1206        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1207        (cubed-sphere configuration will change a little)
1208      - grid computations in seaice_init are obsolete now.
1209      - cleaned up code a little so that is easier to read (hopefully).
1210      - added new (better?) discretizations of default advection and diffusion
1211        (turn on with SEAICEuseFluxForm)
1212      - replace 1 in 3d global fields by kSurface in growth.F
1213      
1214    checkpoint58a_post
1215    o seaice:
1216      - bug fix in advect.F
1217    o shelfice:
1218      - separate shelfice load anomaly from pload (breaks with time
1219        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1220        Its default is 0., but it may be computed more cleverly from (unknown)
1221        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1222        done offline. A good approximation of the pressure load anomaly is
1223        necessary to avoid large initial adjustment processes underneath
1224        deep-reaching shelfice.
1225      - small fix in ISOMIP shelfice_thermodynamics
1226      - add more sophisticated thermodynamics of Hellmer (1989), this is
1227        now the default
1228      - give a few constants more intuitive names
1229    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1230      if bulk formulae are used in long integration (especially EmPmR). Turn
1231      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1232      if balancePrintMean, the imbalance that is substracted is printed to
1233      STDOUT.
1234    o fix bug (typo) in obcs_apply_eta.F
1235    o add a new package shelfice which enables us to model the circulation
1236      underneath shelf-ice with draughts of hundreds of meters.
1237     - works
1238     - to do: + include improved thermodynamics
1239              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1240                instead of new field kTopC
1241              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1242                instead of new field R_shelfIce and new code in ini_depth.F
1243                and ini_mask_etc.F?
1244              + adjust vertical mixing schemes?
1245    o seaice pkg:
1246     - add a cpp-flag to include a simple formula for a salinity dependent
1247       freezing point of sea water at the surface
1248     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1249       meridional stresses are now different (and hopefully correct)
1250    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1251       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1252       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1253    o pkg/diagnostics: add options and parameters for regional-statistics
1254       diagnostics ; define regions by reading a region-mask from a file
1255       (might add other options later)
1256    o pkg/bulk_force:
1257     - add option and parameters to use AIM surface-flux formulae.
1258     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1259       others forcing fields (defined in PARM05, parameter file "data") are loaded
1260       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1261     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1262     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1263     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1264       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1265     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1266    
1267    checkpoint58
1268    o add "--embed-source" option to genmake2 which, when the supporting
1269      tools can be compiled (as determined by genmake2) will turn on the
1270      embed_files package which then embeds the entire MITgcm source code
1271      (*.[fFhc] + Makefile) used for the build within the executable
1272      - requested by CNH but off by default
1273      - adds a paltry <9MB to the mitgcmuv executable in most cases
1274      - only writes the output when useEMBEDSRC in eedata is true
1275    o clean up 3-dim. relaxation codes:
1276      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1277      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1278      * Thanks to Tom Haine for testing!
1279    
1280    checkpoint57z_post
1281    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1282      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1283    o fix the pickup behavior for obcs in combination with ptracers
1284    o fix a bug in ptracers_external_fields_load
1285    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1286      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1287    o transfered surface NH pressure to eta field (if exactConserv).
1288    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1289         and update lab_sea output.txt file.
1290    o completing 3-dim. relaxation code: additional term
1291         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1292      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1293      * At compile time, in "EXF_OPTIONS.h" set
1294          #define  ALLOW_CLIMTEMP_RELAXATION
1295          #define  ALLOW_CLIMSALT_RELAXATION
1296      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1297          tauThetaClimRelax3Dim = 15552000.0,
1298          tauSaltClimRelax3Dim  = 15552000.0,
1299      * 3 cases:
1300          1) Use a constant-in-time 3-dim. field
1301          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1302          3) Real-time relax. to time-evolving prescribed field
1303    o Adding Laplacian-type smoothness constraint on
1304      initial and boundary (forcing) controls (ic, bc)
1305      * enable at compile-time via
1306        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1307      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1308      * Absolute scale somewhat unclear so far
1309      * no area weighting was included since no other cost term does so far
1310    
1311    checkpoint57y_post
1312    First step for a NLFS adjoint
1313    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1314    o new init. routines for calc_r_star, calc_surf_dr
1315    o still need to deal with ini_masks_etc
1316    o testreport seemed happy
1317    checkpoint57y_pre
1318    
1319    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1320    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1321    o add new offset feature to offline pkg (plus minor cleanup)
1322    o cfc fixes for final year of integration
1323    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1324      be in GCHEM_OPTIONS).
1325    
1326    checkpoint57x_post
1327    o fix testreport Pb in multiple test experiment.
1328    o cleanup our namelist syntax in verification:
1329      - make it more F95 standards compliant (some work still needed)
1330      - allows the vast majority of our tests to work with gfortran
1331    o Non-Hydrostatic:
1332     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1333     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1334    o Allow to apply AB on T,S rather than on AB(gT,gS):
1335     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1336     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1337       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1338     - need a "clever" read_pickup to restart from the other AB formulation
1339    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1340    o remove some unused variables (reduces number of compiler warnings)
1341    o adjoint
1342      * Disable useVariableViscosity for adjoint for time being
1343        (there are a number of extensive recomputations)
1344      * Initialize certain variables needed for adjoint
1345    
1346    checkpoint57w_post
1347    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1348                 fix the singleCpuIO RS version of MDSWRITEFIELD
1349       and add a WARNING if using globalFiles=T with multi-processors.
1350    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1351      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1352    o tracer advection scheme:
1353      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1354       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1355       was not very convenient).
1356      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1357       (further tests needed for the implicit DST & Flux-Limiter schemes).
1358    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1359      and sRef for convenience, handy, when you want to initialize
1360      ptracers in a large domain with a constant non-zero value. Also,
1361      untangle ptracers_init.F a little.
1362    
1363    checkpoint57v_post
1364    o change dome exp. to use variable viscosity in side-drag terms.
1365    o remove all the files from the cfc_offline test since they are now
1366      incorporated into tutorial_cfc_offline which has been producing
1367      identical results for a few days of testing
1368    o add new parameter: sideDragFactor to enable half-slip-side BC
1369      and change side-drag S/R to use viscosity from mom_calc_visc
1370      (can switch back by setting sideDragFactor=0.); affects results at
1371      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1372       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1373    o vorticity & strain are now computed without masking, to account for
1374      no-slip-side BC in variable viscosity calculation ; mask is applied
1375      anyway later on, before computing advection/coriolis terms.
1376    o modify exp4 to test new obcs support for reading from external files
1377      and for passive tracers
1378    o fix behavior of ptracers_monitor when monitor output is written to a
1379      netcdf-file; still not independent of monitor.F (writes in the same
1380      file).
1381    o change default value of tRef (put a uniform, meaningful value for ocean
1382      & atmos) and initialize sRef (was missing, as Martin mentioned).
1383    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1384      to be proportional to enstrophy dissipation length.  Thus,
1385       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1386      This is now consistent with Smagorinsky and with the manual.
1387    
1388    checkpoint57u_post
1389    o OBCS and PTRACERS: add open boundary support for passive tracers
1390      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1391        OB-values from file; this is not different from the way theta and salinity
1392        are treated
1393      - however, Orlanski-radiation conditions are not supported, and the model
1394        will stop if you use pTracers and Orlanski at the same time.
1395      - beefed up the rountine obcs_external_fields_load: now only those open
1396        boundary values are overwritten with values from files for which there
1397        are really files, otherwise the OB-fields remain untouched. This makes
1398        it possible to use different OBs at different ends of the domain (as
1399        with EXF)
1400    o reduce number of exch calls in shap_filt (s2).
1401    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1402      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1403    
1404    checkpoint57t_post
1405    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1406    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1407      same truncation, independent of the face number: affects affects several
1408      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1409    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1410      note that biharmonic viscosity + no-slip was not tested in any experiment.
1411    o fix bug in non-linear free-surf side-drag ; generate new output for
1412      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1413    o make mnc honor the writeBinaryPrec flag for most kinds of output
1414    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1415    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1416      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1417    o add brackets in multi-terms sum to get same truncation, independent of
1418      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1419      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1420    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1421      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1422      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1423      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1424      Suggested values of viscosity parameters found in mom_calc_visc.
1425      Many new viscosity diagnostics available.
1426    
1427    checkpoint57s_post
1428    o Add clearing-house for viscosity calculations, mom_calc_visc and
1429      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1430      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1431      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1432      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1433      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1434      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1435      ViscAhStrain and viscAhTension are now retired.
1436    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1437    o In response to JMC's bug report, genmake2 now ignores any soft-links
1438      that it finds in the *current* directory when searching for files.
1439      Soft-links found in any other source directories will still work as
1440      they did before.
1441    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1442      a C routine to unlimit the stack size
1443    o mnc-ify pkg/aim snapshot vars
1444    o mnc-ify pkg/land as requested by Daniel
1445    o various changes to mnc including:
1446      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1447      - output can now be grouped so that all files within a group
1448          change the ITER portion of their names in lock-step together
1449      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1450          and works with both EXCH1 and EXCH2 (but needs more testing)
1451      - writing works for all verification test cases w/ g77 on Linux
1452    
1453    checkpoint57r_post
1454    o make MNC variable initialization happen earlier
1455    o add diagnostics for (almost) each term of the momentum Eq.
1456    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1457    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1458    o remove MINIMAL_TAVE_OUTPUT option ;
1459      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1460    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1461      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1462    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1463    o add time-dependent SST, SSS control
1464    o cost terms in ecco/ modularized (new cost_generic.F)
1465    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1466    o new infrastructure for seaice model vs. obs misfits in seaice/
1467      * driver from the_main_loop.F is seaice_cost_driver.F
1468      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1469      * gradient check in Exp. 6a of natl_box_adjoint/
1470    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1471      (see README file)
1472    
1473    checkpoint57q_post
1474    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1475    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1476      - bug was reported by Jean-Michel and Ian Fenty
1477    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1478      update exp. cpl_aim+ocn output.
1479    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1480      Needed for high-res. runs with large global files
1481      to be able to limit tapelev size
1482    o Changed some tests for adjoint:
1483      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1484      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1485      * global_ocean.90x40x15/ back to default 3-level checkpointing
1486    o Modifications to enable scripted COMMON to MODULE conversion
1487      * verification/OpenAD/code/ has necessary scripts and description;
1488      * converts, compiles and runs successfully;
1489    
1490    checkpoint57p_post
1491    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1492    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1493      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1494    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1495    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1496      (was already the case for dissipation with mom_vecinv,
1497       and also the case for grad.PhiHyd when staggered-timeStep)
1498      This will allow to put dissipation out-off the AB time-stepping.
1499     Unfortunately, affects truncation error. Update output of exp. that "fails"
1500      (cg2d matching number) and leave the others for later: front_relax(10),
1501      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1502      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1503    
1504    checkpoint57o_post
1505    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1506      (2) its ready to be documented during the 20050801 DocFest
1507    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1508      for ideal_2D_oce and lab_sea on linux_ia32_g77
1509    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1510      in global1x1_tot/code_seaice_adj to access indices 32, 33
1511      (worth another tag)
1512    
1513    checkpoint57n_post
1514    o adding precip control xx_precip 32
1515    o adding swflux control xx_swflux 33
1516    o Replacing 10 forcing penalty cost routines by 1 generic.
1517    o Implementing partitioning in time-mean and variable adjustment
1518      for atmos. state.
1519    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1520    o in natl_box_adjoint:
1521      * updated exp 1 to 10
1522        (but does not have time-mean vs. variable split results yet)
1523    o updated global1x1/*_seaice_adj/
1524      to incorporate latest changes
1525    o enable useSingleCpuIO for mdsio vector routines
1526      (applies in particular to tapelev I/O)
1527    o removed inefficient K-loop in all active_file*control*.F
1528    
1529    checkpoint57m_post
1530    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1531      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1532    o pkg/exch2: filling of face-corner halo regions is optional
1533      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1534    
1535    checkpoint57l_post
1536     tag before updating tutorials (pre-release-2)
1537    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1538       for output and interpolation of input fields onto model grid)
1539    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1540       Affects results of exp. rotating_tank ; update output.txt.
1541    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1542          and taking the square quantity and/or using a fraction-weight field.
1543    o fix aim_diagnostics_init.F mate numbers.
1544    o add mnc output capability to diagnostics/diagstat and update
1545      our cvsignore files for the ACSII output generated
1546    
1547    checkpoint57k_post
1548    o lab_sea now uses diagnostics package and provides a suite of
1549      new EXF diagnostics output.
1550    
1551    checkpoint57j_post
1552    o exf
1553      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1554        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1555        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1556      * extended diagnostics output
1557        - now includes all EXF variables
1558        - hs, hl moved to common block
1559        - separate S/R for diagnostics, called after ctrl vector is added
1560        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1561        - EXFqnet contains true Qnet (i.e. includes qsw)
1562      * updated verif. lab_sea, global_with_exf
1563      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1564        to ensure that diagnostics sees a true EXFqnet
1565    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1566    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1567      several times with different frequencies.
1568    o mnc-ify the thsice package as requested by Daniel Enderton
1569      - the monitor--MNC output needs work
1570      - many attributes need to be added (most are currently blank)
1571    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1572      - many attributes need to be added (most are currently blank)
1573    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1574    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1575    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1576      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1577         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1578    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1579     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1580    
1581    checkpoint57i_post
1582    o Diagnostics package was changed: diagnostic allocation is now deactivated
1583      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1584    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1585      add 1rst Order upwind vertical Shear.
1586    o add a quick fix for A/B checkpointing in OFFLINE mode
1587    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1588      end-run around the C/Fortran linking horror in eesup/src/timers.F
1589    o added pkg/runclock: allows user to terminate run based on wall clock
1590    o added non-hydrostatic scaling parameter: nh_am2
1591    o pkg/my82: futile attempt to make results compiler-independent by adding
1592      some "_d 0", etc. no effect.
1593    o for mnc output, fill the 'T' coordinate var with myTime and create a
1594      separate 'iter' variable for iteration count
1595    o pkg/diagnostics:
1596      add new capability: output of Global/Regional & per-level statistics ;
1597      tested against monitor output (including land & thSIce) on various exp.
1598    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1599    
1600    checkpoint57h_done
1601      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1602      data.diagnostics, data.gchem, data.ptracers) is done.
1603    
1604    o pkg/diagnostics: prepare for Global/Regional statistics.
1605      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1606    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1607      and rename it: DIFFERENT_MULTIPLE
1608    
1609    checkpoint57h_post
1610    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1611    o pkg/diagnostics: change output frequency, now in seconds (instead
1612      of Nb of iterations). This requires to change data.diagnostics.
1613    checkpoint57h_pre
1614    
1615    o in mnc, let the user create the output dir if both mnc_outdir_date
1616      and mnc_outdir_num are false
1617    o add fflags() to pkg/diagnostics which allows one to specify, on a
1618      per-file basis, the file precision [default behavior is unchanged]
1619    o added diagnostics to pkg/kpp, including computation of mixed layer
1620      depth based on a temperature/density criterion
1621    o updated verification/natl_box to test the new pkg/kpp diagnostics
1622    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1623    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1624    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1625      not mnc -- this mistake was found by JMC and is now corrected
1626    
1627    checkpoint57g_post
1628    o add Adams-Bashforth 3rd Order time stepping:
1629      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1630      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1631    checkpoint57g_pre
1632    
1633    o make lambda[Theta,Salt]ClimRelax spatially varying
1634      (default remains spatially uniform constant based on tau)
1635    o added new control variables
1636      * init. uVel, vVel, etanN
1637      * lambda[Theta,Salt]ClimRelax
1638    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1639      (suggested by G. Forget)
1640    
1641    checkpoint57f_post
1642    o add parameter "baseTime" = model base time = time at iteration zero
1643      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1644      account for baseTime shift
1645    o move Coriolis arrays from PARAMS.h to GRID.h
1646    checkpoint57f_pre
1647    
1648    o mnc-ifying the seaice package
1649    o introduced an alternative length scale calculation for use in the limiting
1650      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1651    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1652    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1653      as well as grad(vort3).  Made it compatible with both approximate form
1654      for the cubed sphere and full form of these gradients.  Added flag
1655      useFullLeith to select between approximate and full form.  
1656    o add "d0" in getcon.F to reduce differences between compilers/platforms
1657      update output.txt of exp. fizhi-gridalt-hs
1658    o change port_rand funtion to allow to set the seed.
1659    o fix obscure MNC bug involving conversion between reals and integers
1660      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1661        new version is now more standards-compliant
1662    o adjoint-related modifications
1663      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1664      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1665      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1666    
1667    checkpoint57e_post
1668    o Adding eddy stress controls a la Ferreira et al.
1669    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1670    
1671    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1672      update output.txt of exp. fizhi-gridalt-hs
1673    o add more "Z" dimensions and associated coordinate vars to MNC
1674    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1675    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1676      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1677      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1678      months and years.  Requires pkg/cal.
1679    o diagnostics: add pickup functionality
1680      - off by default for backwards compatibility
1681      - current version only uses MDSIO -- MNC will be added
1682    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1683    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1684    
1685    checkpoint57d_post
1686    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1687    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1688      output from the diagnostics package
1689    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1690    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1691      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1692    o add coordinate variables to the MNC output from the diagnostics package
1693    o change MNC-flags default value: true when useMNC=TRUE
1694    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1695      the ability (off by default) to read the grid information using MNC
1696    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1697    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1698    o do snap-shot diagnostics at the middle of the time-interval (instead of
1699      at the end).
1700    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1701      new test for AIM with thSIce + slab-ocean
1702    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1703    o move state variable diagnostics to the beginning of the time step ;
1704      (note: still needs some work specially for snap-shot diagnostics)
1705      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1706    
1707    checkpoint57c_post
1708    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1709    o generate new output.txt files on faulks with g77 & the new -ieee option
1710    checkpoint57c_pre
1711    
1712    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1713      update output.txt of exp. global_ocean.90x40x15
1714    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1715      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1716    o add saltFlux(+File) forcing capability with periodicExternalForcing
1717    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1718    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1719    o improvements for the MNC output from DIAGNOSTICS:
1720      - correct handling of the unlimitied dimension
1721      - all dims now have associated coordinate variables
1722      - variables located at U, V, and Corner ("Z") points are now written
1723        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1724        *all* data points are output
1725    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1726    o added pkg/seaice/seaice_monitor.F
1727    o mdsio_readfield.F can now read files visible only to master MPI process.
1728    o pkg/seaice: some test code for ice-modified ocean stress
1729    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1730      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1731      spurious negative numbers for precipitation and humidity.  Will cause
1732      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1733    o pkg/ctrl/
1734      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1735        May be enabled via doPackDiag
1736      *  introduce z-scaling of
1737         + gradient (doZscalePack) and
1738         + control (doZscaleUnpack)
1739    o pkg/mdsio/
1740      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1741      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1742    
1743    checkpoint57b_post
1744    o simplify options in diagnostics_fill arguments (remove weird combinations)
1745    o fix MNC coordinate variables so that they now contain per-face index
1746      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1747      general, EXCH2 grids are only aligned to a "local" coordinate system
1748    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1749    o Implement instantaneous output within pkg diagnostics:
1750      setting a negative frequency in data.diagnostics produces
1751     "snap-shot" output (as opposed to time-average if freq > 0)
1752    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1753      NOTE: change ptracer diagnostics name: use 2 characters to work with
1754            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1755    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1756      becomes the coordinate variable for the 'T' dimension
1757    o add CF-style coordinate variables to MNC
1758      - just a first cut:  numbers are meaningless on the cubesphere and
1759        missing along the T axis but otherwise it works!
1760    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1761    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1762    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1763      this is based directly on what the model compute, so that the content of
1764      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1765    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1766    o clean up build options files for SunOS, in particular
1767      - remove -traditional from xmakedepend
1768      - change -xarch=v9 to -xarch=native for f77
1769      - restore use of make (not gmake)
1770      - add CC=gcc if using g77
1771    o changes per discussion of AM, JMC, & EH3 today:
1772      - move redundant "grid" variables out of "state" -- in preparation of
1773        creating proper CF-style coordinate variables and in recognition
1774        that any/all grid variables can be easily copied (eg. w/NCO) from
1775        the grid files into any of the other NetCDF files
1776      - *always* output grid variables with MDSIO (this will eventually be
1777        changed)
1778      - output MNC grid file if useMNC is true
1779    o every instance of _END_MASTER() has been found and replaced with
1780      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1781      preprocessors
1782    o re-arrange diagnostics pkg initialisation:
1783     - allow each package to extend the available diagnostics list
1784     - add some checking and fix small problems (multi-threaded, ...)
1785     - new S/R diagnostics_fill (replace fill_diagnostics):
1786       look through the short list of active diag. (instead of the long list)
1787       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1788    
1789    checkpoint57a_post
1790    o this set of changes restores TAMC compatibility
1791      tested for global_ocean.90x40x15 adjoint on trough
1792      (what a pain)
1793    
1794    checkpoint57a_pre
1795    o some modifs in tools/build_options for sunos
1796    o call ctrl_pack for ctrl at end for optimcycle=0
1797    
1798    checkpoint57
1799    o add horizontal bi-harmonic viscosity for vertical velocity
1800      - new parameter viscA4W (defaults to viscA4)
1801      - affects only non-hydrostatic code
1802      - to be done: no-slip lateral boundary conditions
1803    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1804    o implement Implicit Vertical advection for pTracers
1805    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1806      (implemented also for implicit vertical diffusion & advection)
1807    o OBCS: extend application of tracer open boundary conditions
1808      to a strip beyond the boundary of width Olx/Oly
1809    o add call monitor to TAF set of required calls (flow directives)
1810      and include in natl_box_adjoint
1811    o untangle a few ifdefs related to cost, ctrl, autodiff
1812      untangel a few ALLOW_ECCO_OPTIMIZATION
1813    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1814      (theta2, salt2 in ecco_cost_weights)
1815    
1816    checkpoint56c_post
1817    o OBCS as control variables
1818      - update ctrl_ad_diff.list, obcs_ad_diff.list
1819      - remove balance of obcs controls from default
1820      - fix index bug nobcs in ctrl_init
1821      - fix dummy fields filen in ctrl_pack
1822      - add dummy weights for obcs
1823    o lsopt: comment out fort.94 output
1824    o optim:
1825      - remove unnecessary header files
1826      - adjusted namelists
1827      - add xerbla.F to Makefile
1828    o exf:
1829      - multiple modifications of exf_check_range
1830      - unit change in exf_init_runoff from [m/year] to [m/s]
1831    o mdsio:
1832      - i/o-vector change debugLevel from debLevA to debLevB
1833    
1834    checkpoint56b_post
1835    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1836      is called from DO_THE_MODEL_IO
1837      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1838      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1839      - clean up PTRACERS_WRITE_TIMEAVE a little
1840    o add another verification experiment that tests both the cfc-pkg and
1841      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1842      reactive tendencies treated inline with regular timestepping
1843    o testreport previously did a lousy job of comparing small numbers, so
1844      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1845      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1846      testreport.
1847    o ptracers_monitor: bug fix for MPI
1848    
1849    checkpoint56a_post
1850    o GCHEM: finish reorganizating the package
1851      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1852        (introduces another 3D-array for each passive tracer, but only if
1853        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1854        gchemTendency is not needed because the timestep is done separately)
1855      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1856      - GCHEM is now---more or less cleanly---separate from PTRACERS
1857      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1858        so clear to me how that should be done in a general way.
1859    o CFC: improve formatting of output in CFC_ATMOS
1860    o PTRACERS:
1861      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1862        that ALL experiments with ptracers enable can be checked. This makes
1863        GCHEM_MONITOR obsolete.
1864      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1865        monitorFreq
1866      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1867    o add PTRACERS (PTR0[1-5]) to testreport output
1868    o exf_check_range:
1869      * default changed to .TRUE.
1870      * will check values for niter0 if debLevA, every timestep if debLevB
1871      * STOP in exf_check_range if 'out of range'
1872      * range chosen generous to allow for potential extema
1873      TBD: a version with stricter range
1874           permitted range would be runtime parameters
1875    o GMredi:
1876      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1877      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1878      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1879    o GCHEM:
1880      - move call to GCHEM_FORCING_SEP, so that it is now called before
1881        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1882      - introduced a useGCHEM runtime flag and applied it everywhere.
1883      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1884        this flag is now only visible within GCHEM-pkg routines.
1885      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1886        be replaced by a 3D array that is computed before thermodynamics; for
1887        this, the tracer ID iTracer had to be included into the parameter list
1888        of ptracers_forcing
1889      - set up forward_step to call gchem_forcing, that will replace
1890        gchem_forcing_int in ptracers_forcing
1891      - cleaning up
1892    o small cleaning of exch2: remove files that are also in eesupp/src
1893    
1894    checkpoint56
1895    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1896    o mnc: cleanup "full" files--fixes out-of-memory problem
1897    o ECCO-GODAE
1898      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1899      * fully merged and updated from SIO code
1900        windstress sign change affects
1901        - exf_inscal_[u/v]stress
1902        - sign of xx_tau[u/v] adjustments
1903        - signs in cost_scat
1904      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1905      * natl_box_adjoint updated and compressed
1906      * 2-level checkpoint switch added
1907        (tested in EXP. 1 of natl_box_adjoint)
1908      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1909    o SVD
1910      * first complete, non-hacked version for SVD calculations
1911      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1912        performed via direct access files admtlm_vector.it????
1913        (via ctrl_[un]pack)
1914      * optimcycle is used for ARPACK iteration counter
1915        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1916      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1917        and add linear transforms where necessary
1918      * controls are initial/final SST, SSS (can be extended; need to check
1919        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1920    o mdsio: filename info to both stderr, stdout
1921    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1922      from sign change
1923    
1924    checkpoint55j_post
1925    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1926      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1927    o add consistent build directories and .cvsignore files to verification
1928    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1929    o make all subroutines 30 or less characters in length for certain older
1930      compilers to work (a thorough search only turns up two routines in
1931      pkg/ptracers)
1932    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1933      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1934    
1935    checkpoint55i_post
1936    o change arrays for total vertical diffusivity (2.D if explicit,
1937      3.D if implicit) ; each ptracer uses its own background value.
1938    o added mnc/NetCDF output capability to ocn_compon_interf
1939      - added bits to verification/cpl_aim+ocn so that it can run on
1940        ITRDA and other clusters without the mpirun "-wd" option
1941    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1942      configuration
1943    o give MNC the ability to create additional files rather than
1944      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1945      - the default is just less than 2GB which is a practical limit
1946        on many systems
1947    o Compute the non-local term using either KPP vertical diffusivity (=default)
1948       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1949    
1950    checkpoint55h_post
1951    o add verification test "vermix"
1952    o remove all the *_ioinc flags and replace with the single global
1953      outputTypesInclusive flag
1954    o allow to set a vertical profile of vertical diffusivity for T & S
1955    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1956    o useMNC moved from data.mnc to data.pkg
1957    
1958    checkpoint55g_post
1959    o Renaming carbon AD experiments to comply with testreport conventions
1960    o Updating adjoint of Held-Suarez hs94.1x64x5
1961    o Fixing directives for non-ECCO forward_step, after ECCO directives
1962      have been fixed to avoid recomp. of do_oceanic_phys
1963      Works well for global_ocean.90x40x15,
1964      but recomp. issue remains for carbon
1965    o Updating adjoint output for natl_box_adjoint after
1966      pkg/ecco has been modified (see taga c55d_post)
1967    
1968    checkpoint55f_post
1969    o rename to timeave_init_fixed
1970    
1971    checkpoint55e_post
1972    o some delicate re-shuffle of store directives to avoid one
1973      extra call of do_oceanic_physics
1974      affects ecco_the_main_loop.F, do_oceanic_physics.F
1975      checkpoint_lev1_directives.h
1976    o NB: this may break global_ocean adjoint temporarily,
1977      but it is clear how to fix it. Will do later, need this now.
1978    
1979    checkpoint55d_post
1980    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1981    o ecco_cost_weights is modified to 1x1 runs
1982    o modifs to allow observations to be read in as
1983      single file or yearly files
1984    o enable to read exf forcing fields as either
1985      single file or yearly files (flag useExfYearlyFields)
1986    checkpoint55d_pre
1987    
1988    o switch between 2-level and 3-level checkpointing
1989    o add ability of MNC to write local and "partial" (eg. 2D slices where
1990      the full 3D field is never actually stored) arrays to NetCDF files
1991      with the correct (that is, the complete multi-dimensional) set of
1992      array indicies
1993      - used in mom_vecinv() to write the diagFreq output
1994      - tested (demonstrated) in verification/aim.5l_cs
1995    o further mnc-ification
1996      - add verification/lab_sea to the list with mnc setups
1997      - fix undefined mnc v-names in cd_code
1998      - add kpp to mnc output (both snapshot and timeave)
1999    o non-hydrostatic code
2000      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2001        in calc_gw.F
2002      - defaults to viscAh
2003      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2004        friction or Leith) in non-hydrostatic mode, as long as there is
2005        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2006    o pkg/cost
2007      extend simple cost functions to treat time mean quantities
2008      (T,U,V) via cost_accumulate_state from cost_tile
2009    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2010        be 2 times larger than the minimum size the advection scheme requires.
2011        now get a perfect conservation of salt in advect_cs test-exp (updated)
2012    o GGL90 (Gaspar's TKE mixed layer)
2013      - add horizontal diffusion of TKE, requires exchanges in
2014        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2015        default. In OPA there is no horizontal diffusion of TKE but the
2016        mixing coefficients are computed from a horizontal average of TKE of
2017        6 points or so. I think that diffusion has a little more physical
2018        justification.
2019      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2020        was in vain)
2021      - mask tke-variable in ggl90_init
2022    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2023    o fix biharmonic diffusion on CS-grid.
2024    o more obcs stuff
2025      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2026        for reading boundary values. This routine is called from
2027        obcs_prescribe_read
2028      - updated obcs_check
2029      - changed sponge layer relaxation parameter units for days to seconds
2030      - turned off sponge layer by default
2031      - changed argument list of OBCS_CALC to myTime+deltaTclock
2032      - fixed about 35 bugs in obcs_external_fields_load
2033    
2034    checkpoint55c_post
2035    o obcs stuff
2036      - new runtime flags useOBCSprescribe, useOBCSbalance
2037      - re-arranged obcs_calc
2038      - moved exf_getobcs to obcs_prescibe_read
2039        obcs_prescibe_read is called after ORLANSKI stuff
2040        and independent of it (executable can contain all).
2041      - updated obcs_check
2042      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2043        These may be necessary only if tangential velocities are
2044        prescribed at OB, not sure, needs testing.
2045    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2046      which simplifies the calls and passes the ifc check-bounds test
2047    
2048    checkpoint55b_post
2049    o add a 2D scalar, Z location, exchange_2 routine.
2050    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2051      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2052      affects advect_cs results (for the wrong reason): update output.txt
2053    o use a more standard discretization for biharmonic viscosity ;
2054     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2055      affects results of dome set-up: update output.txt
2056    o fix gad_advection.F (CubedSphere part), back to version 1.23
2057    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2058    
2059    checkpoint55a_post
2060    o merged code to
2061      * prescribe/read time-dependent open boundaries
2062        (works in conjunction with exf, cal)
2063      * sponge layer code for open boundaries
2064      * each boundary N/S/E/W now has its own CPP option
2065        (healthy for the adjoint)
2066    
2067    checkpoint55
2068    o up-to-date adjoint of previous breaks
2069      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2070      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2071      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2072      - carbon: * remove tr1-related adjoint verification
2073                * add ptracer as control variable
2074    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2075      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2076    
2077    checkpoint54f_post
2078    o in verification/carbin/ remove experiment related to
2079      ALLOW_PASSIVE_TRACER (array tr1 etc)
2080      code_ad/ input_ad/ results_ad
2081    
2082    o add two new packages
2083      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2084        + subject to optimization (memory)
2085      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2086        + subject to reordering (many GOTOs in the original code)
2087        + so far opps is called for every (i,j) point, and then operates in
2088          the vertical; one may want to reorder the scheme in order operate in
2089          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2090          fields)
2091    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2092      - all verification tests compile and run with linux_ia32_g77
2093      - defaults are compatible with current input files--nothing
2094        should change if you were not previously using MNC
2095      - MNC output has been added in numerous places (eg. timeave)
2096        but there are still a few writes not yet do-able with MNC
2097        (this is in progress)
2098      - flags now allow for either/or/both use of MDSIO and MNC and
2099        documentation will soon follow
2100      - numerous small formatting cleanups for ProTeX
2101    o add version info (via BUILD_INFO.h) to MNC and stdout
2102    
2103    checkpoint54e_post
2104    o add two new packages
2105      - pp81 (Packanowski and Philander, 1981), Richardson number and
2106        stratification dependent mixing
2107      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2108      - these scheme operate in a similar manner as KPP (without ghat, of
2109        course), however there is only one diffusivity that is used for both
2110        temperature and salinity (and passive tracers)ç
2111    o add offline package
2112    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2113      provided by Stephanie Dutkiewicz
2114    o genmake2: add ability to search for C compilers and cleanup test output
2115      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2116    
2117    checkpoint54d_post
2118    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2119    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2120      leading to additional shift by 5 days each year of integration
2121       (i.e. leading to considerable offset over the years)
2122    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2123    o start with no AB and no initial filtering (staggerTimeStep):
2124      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2125    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2126      (external loading & cpl import/export stay in forward_step.F)
2127    o update coupling interface to work with new staggerTimeStep
2128    o change MDSIO ptracers_pickup.
2129    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2130    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2131    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2132    
2133    checkpoint54c_post
2134    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2135      this affects (truncation error) output.txt of test-exp:
2136       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2137    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2138    o change Qnet to always be the net heat flux, (+upward).
2139      affects (truncation error) output of natl_box exp.: updated
2140    o define the max number of passive tracers in PTRACERS_SIZE.h
2141    o start to test mnc routinely in exp0
2142    o add sea-ice loading (sIceLoad) as a new forcing field.
2143    
2144    checkpoint54b_post
2145    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2146       impressive on Altix and Opteron systems)
2147    o diagnostics can now write NetCDF files through the mnc package
2148    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2149    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2150    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2151      affects (truncation error) output of lab_sea & natl_box exp.: updated
2152    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2153    
2154    checkpoint54a_post
2155    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2156    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2157    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2158    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2159      + internal_wave (shift in writing cg2d_ini_res)
2160    checkpoint54a_pre
2161    
2162    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2163      - modified verification/lab_sea and natl_box_adjoint accordingly
2164    
2165    checkpoint54
2166    checkpoint53g_post
2167    o prepare splitting of thermodynamics: store convect.counter in common block
2168    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2169      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2170    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2171    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2172    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2173    o restore adjointability
2174    
2175    checkpoint53f_post
2176    o modifications that affect AIM experiment results (update output.txt):
2177      - no advection of S at top interface Nr (pkg/generic_advdiff)
2178      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2179    o AIM pkg:
2180      - include stability function into surf.Flux derivative relative to Tsurf
2181      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2182    
2183    checkpoint53e_post
2184    o merged cylindrical coord configuration
2185    o added rotating_tank experiment
2186    checkpoint53e_pre
2187    
2188    checkpoint53d_post
2189    o faulks upgraded: re-generate output.txt that have changed:
2190       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2191    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2192    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2193    o added Sadourny discretization of Coriolis
2194      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2195      - re-enabled use of omega3 (useAbsVorticity)
2196    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2197      vector-invariant equations
2198      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2199    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2200      hopefully without new bugs
2201      - still to do: biharmonic friction for non-hydrostatic w
2202    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2203    o regenerated output for global_ocean_ebm (using -ieee)
2204    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2205      of mom_common/
2206      - simple re-arrangement of instructions within computing loop
2207    checkpoint53d_pre
2208    
2209    checkpoint53c_post
2210    o new version of coupler for AIM+thSIce and Ocean models
2211     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2212     - land: change Evaporation of snow
2213     - aim with thSIce: fix bug in snow-precip.
2214    o changes to calc_gw.F
2215     - bug fix for w^2 term near the bottom boundary
2216     - (hopefully) improve the lateral slip boundary condtions for use with
2217        partial/looped cells
2218      - because the bug fix changes two verification experiments anyway (exp5
2219        and plume on slope), change the lateral boundary condition from half slip
2220        to the value of no_slip_sides
2221    o ebm package wasnt quite up to the parallel task. Fixed that.
2222    o Adjoint of EBM package + verification
2223      * TLM OK
2224      * ADM not sufficient accuracy yet (needs further testing)
2225    
2226    checkpoint53b_post
2227    o Commiting new energy balance model to repository
2228      * package is pkg/ebm
2229      * verif. is verification/global_ocean_ebm
2230      * references are in ebm_driver.F
2231    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2232    C        Global thermohaline circulation. Part I:
2233    C        Sensitivity to atmospheric moisture transport.
2234    C        J. Climate 12(1), 71-82
2235    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2236    C        Global thermohaline circulation. Part II:
2237    C        Sensitivity with interactive transport.
2238    C        J. Climate 12(1), 83-91
2239    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2240    C        Destabilization of the thermohaline circulation
2241    C        by atmospheric eddy transports.
2242    C        J. Climate 7(12), 1870-1882
2243    o Will need long integration testing.
2244    checkpoint53b_pre
2245    
2246    o created pkg/mom_common in preparation for variable viscosity code
2247    o renamed and split ini_mnc_io
2248    o pkg/land: only liquid water can diffuse or run-off
2249    o AIM using land: soil wetness availability account for snow
2250    o added printMapIncludesZeros to EEPARMS namelist
2251    
2252    checkpoint53a_post
2253    o restore TAMC compatiility for exf_constants.h
2254      (no usage of _d in .h)
2255    o Additional storing in KPP in an attempt to fix
2256      TAMC problem with adjoint of KPP code.
2257      (no success...)
2258      Identical code works fine with TAF.
2259    o Fixed verification/natl_box_adjoint experiments.
2260      Initial conditions for Experiments 4 and 5 are now
2261      set to "SEAICE_initialHEFF=0", which is more reasonable,
2262      and hence gives results closer to that of Experiment 2.
2263      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2264    
2265    checkpoint53
2266    o stable checkpoint with up to date adjoint
2267      TLM tests only run for 1st grdchk at the moment. Its unclear if
2268      this is a code problem or a problem with resetting code for g_
2269      variables that is being autogenerated wrong.
2270      Otherwise:
2271       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2272       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2273         are both still in chaos following their security messes.
2274    
2275    checkpoint52n_post
2276    o various build (mostly genmake2) changes including:
2277      - ability to build/run more easily within Cygwin and MacOS X
2278      - more complicated Makefiles with a stronger dependence on Gnu Make
2279    o pkg/seaice modifications
2280      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2281        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2282        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2283      - changed proxy for geostrophic velocity and updated
2284        verification/lab_sea/results/* accordingly
2285      - removed ADI dynamic solver from pkg/seaice
2286      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2287        they caused a segmentation fault under certain circumstances
2288      - removed unused field WATR
2289    o bug fix in exf-package:
2290      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2291         now reflect that.
2292    o small fixes in the cal-package:
2293      - set reference date to first of January for the 'model'-calendar
2294      - failing of cal_CheckDate in cal_FullDate now actually results in a
2295        warning
2296    o small modifications in exf-package to increase flexibility:
2297      - change climtempfreeze from a constant to a runtime parameter that
2298        is specified in data.exf_clim (default = -1.9)
2299      - introduce runtime parameter windstressmax (default = 2.0) that is
2300        specified in data.exf
2301    o fix in pkg/thsice:
2302      - update Evap (Tsf changes) to be consistent with Latent heat flux
2303      - maintain snow precipitation unchanged (even if Tsf >=0).
2304     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2305    
2306    checkpoint52m_post
2307    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2308      this does not change any of the results, because myIter=0 in swfrac always
2309      lead to jwtype=2 (the default anyway), but the call makes little sense
2310      as a default
2311    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2312    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2313      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2314    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2315    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2316    o extending useSingleCpuIO option to work with new exch2 I/O format
2317      - old-style, missing-tile I/O is still accessible by defining CPP
2318        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2319    o monitor package can write to NetCDF files and/or STDOUT
2320    o fix re-definition bug in MNC_GRID_INIT_ALL()
2321    o doc/api_reference added
2322      - a framework for building an API Reference Manual using all
2323        the "protex" comments embedded in the code
2324      - see pkg/generic_advdiff, pkg/mnc for examples
2325    o MNC:
2326      - make myThid the last argument for all subroutines
2327      - new default for the grid files: NO halos
2328      - add useMNC and other run-time flags
2329      - separate per-file-group handling of the unlimited dimension
2330      - early initialization of MNC w/ flags read at the eeboot stage
2331        and lookup tables set in initialize_fixed
2332      - write all MNC output to a freshly-created directory
2333    o thermodynamics sea-ice (thsice) is now tested with testreport.
2334    o test exp. advect_cs: use the standard cs32 grid ; update output.
2335    o Added functionality to grdchk:
2336      pick global i,j,k position (or nearest wet) where to perform check.
2337    
2338    checkpoint52l_post
2339    o new land formulation:
2340      a) use ground enthalpy as prognostic variable to ensure exact
2341         energy conservation.
2342      b) account for water temperature and for latent heat of freezing
2343         in all processes (rain, run-off, ground storage)
2344      c) compute surface and ground temperature implicitly.
2345    o aim_v23 modification for new land model:
2346      a) Treat separately land / ocean / sea-ice surface fluxes
2347         to allow implicit computation of land & sea-ice surface temp.
2348      b) add snow precipitation.
2349    checkpoint52l_pre
2350    
2351    o fix problem (when 1 tile is empty) in min/max monitor.
2352    o fix bug in timeAve (u,vZetatave in common block)
2353    o no restoring terms under ice for pkg/seaice
2354    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2355    o bug fix for pkg/seaice pickups
2356    o change MNC call locations and add coordinate attributes
2357    o mask vorticity at the corner ; affects global_ocean.cs output
2358    o fix ini_curvilinear_grid ; test CS experiments with mpi
2359    o aim.5l_cs: modify sea-ice fraction input file ; update output
2360    o exf: Adding simple range check routine for exf fields after read
2361    
2362    checkpoint52k_post
2363    o removed top-level directory "diags"
2364      - we migrated these functions to pkg/timeave a long time ago
2365    o fixed bug introduced in pkg/monitor
2366    o accuracy ctrlprec = 32 insuffient for gradient checks using
2367      averaged fields (I/O via cost_averages)
2368      -> use ctrl.h in active_file*.F to control I/O precision.
2369    o paramter list of CALL ADTHE_MAIN_LOOP
2370    o added initial do_the_model_io to ecco
2371    o set all ...Freq to zero after cost_final
2372      taveFreq, dumpFreq, pChkptFreq
2373    o MAIN and ECCO differentiability restored
2374    
2375    checkpoint52j_post
2376    o fix nchklev in tamc.h for global_ocean...
2377    o Bringing flow and store directives up-to-date
2378    o Really weird thing!
2379      call do_the_model_io from the_main_loop with parameters
2380      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2381      TAF places a faulty re-call of initialise_varia
2382      after cost_final call which should not be there!
2383    checkpoint52j_pre
2384    
2385    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2386      error messages
2387    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2388    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2389      debug output
2390    o modfied mdsio_writefield.F to handle non-global files under exch2
2391    o update AIM Cubed-Sphere exp (aim.5l_cs):
2392      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2393    o update AIM Equatorial Channel exp:
2394      use standard aim_v23 pkg and change the SST fields to be more realistic.
2395    o globalFile now works with exch2
2396    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2397      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2398    o limit timeave output for hi-res integrations
2399    
2400    checkpoint52i_post
2401    o removed CPP_EEOPTIONS.h from verification/*/code
2402    o updated the tiling for global_ocean_pressure
2403    checkpoint52i_pre
2404    
2405    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2406      the old pkg/aim).
2407    
2408    checkpoint52h_pre
2409    o shortened offending lines in exch2_send_rx?.template
2410    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2411    o genmake2: add build & execute test for NetCDF code
2412    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2413      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2414    o added useSingleCPUIO flag to monitor.F and mon_out.F
2415    o added temporary hack for sea-ice dynamics on the cube:
2416      metric terms are ignored and it is assumed that
2417      there is no sea-ice on cube faces 1, 2, 4, and 5.
2418    
2419    checkpoint52f_post
2420    o added exch2 cube routines to pkg/exch2
2421    o modified hs94.cs-32x32x5 to use it
2422    o added new grid files to hs94.cs-32x32x5
2423    checkpoint52f_pre
2424    
2425    checkpoint52e_post
2426    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2427      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2428    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2429      to work with implicit vertical advection and AB ;
2430    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2431    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2432     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2433    checkpoint52e_pre
2434    
2435    o fix bug in impldiff when Nr=1 or Nr=2.
2436    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2437    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2438    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2439      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2440    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2441    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2442    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2443    
2444    checkpoint52d_post
2445    o re-tiled many expts to allow comparison in multi-processor mode
2446      - updated output accordingly
2447      - changed hs94.128x64x5 to use intial T from file rather than use the
2448        random number generator
2449    o add infrastructure in model routines for fizhi and gridalt packages
2450    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2451    o changes to permit hi-res, cubed-sphere, configuration
2452      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2453      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2454      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2455        of surface winds for the cube
2456      (A verification experiment, based on global_ocean.cs32x15, but with
2457       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2458       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2459       complete with example surface forcing files and matlab scripts to look
2460       at the output and compare it with that of global_ocean.cs32x15.)
2461    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2462       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2463       to conform to the common rule.
2464    o check-in the first version of the coupler + interfaces for multi-components
2465       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2466       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2467       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2468       - ocean and atmos. share the same horizontal grid (no interpolation).
2469       - exchanges between component and coupler is done in forward_step
2470    o new verification experiment, cpl_aim+ocn:
2471       coupled ocean - AIM atmosphere on cs32 grid.
2472    
2473    checkpoint52d_pre
2474    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2475    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2476    
2477    checkpoint52c_post
2478    o Fixing OPTIONS files for use of exf:
2479      - ALLOW_ECCO not needed
2480      - ECCO_CPPOPTIONS.h should not be included from
2481        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2482        as has been the case in the past
2483      - All cal/exf related options are currently set in
2484        single header file. Should remain so until we
2485        agree on a consistent new policy.
2486    o Removed all CPP options for cal package.
2487      cal has no more CPP options.
2488    o modified STOREs in GAD_ADVECTION
2489    o corrected key comp. for passkey
2490    
2491    checkpoint52b_post
2492    o new version: "thsice" of thermodynamic sea-ice pkg:
2493     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2494     - modify fluxes but do not change theta directly;
2495     - light cleaning of bulk_force pkg (still needed with thsice).
2496     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2497       + output_thsice.txt to test thsice & bulk_force pkgs.
2498    o put back grid & coriolis monitor output.
2499    checkpoint52b_pre
2500    
2501    o call "do_the_model_io" at the beginning (=> dump initial state)
2502    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2503    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2504      (need info on NUMBER_OF_PTRACERS)
2505    o missing PTRACERS headers in some routines
2506    o default tamc.h in pkg/autodiff supposed to crash
2507      to ensure proper customization
2508    
2509    checkpoint52a_post
2510    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2511      - moved surfaceTendencyTice from pkg/seaice to main code
2512      - subroutine FREEZE_SURFACE now limits only surface temperature
2513        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2514        => new output.txt for global_ocean.cs32x15 & global_with_exf
2515      - keep the old version of FREEZE for backward compatibility;
2516        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2517      - corresponding modifs for TAF directives
2518    o added surface flux output variables to TIMEAVE_STATVARS
2519    o time-averaged output for pkg/ptracers
2520    o fix problem with ECCO-related divided adjoint
2521      snapshot file was missing some ad-variables,
2522      but no warning issued by TAF
2523    
2524    checkpoint52a_pre
2525    o some bug fixes for #undef REAL4_IS_SLOW
2526    
2527    checkpoint52 = ecco_c52_e35
2528    o after testing adjoints of checkpoint51u_post
2529    
2530    checkpoint51u_post
2531    o this is the post-merge tag of the ecco-branch
2532      (needs another clean checkout and re-testing)
2533    o various natl_box_adjoint configs and results
2534      but no input fields
2535    o obcs adjoint not yet merged!
2536    o adding ECCO global 1x1 and 2x2 degree configs
2537    o updated/extended some store directives for seaice
2538    o pkg/ecco now containes ecco-specific part of cost function
2539    o top level routines the_main_loop, forward_step
2540      supersede those in model/src/
2541      previous input data.cost now in data.ecco
2542      (new namelist ecco_cost_nml)
2543    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2544    
2545    checkpoint51t_post
2546    o this is the pre-merge tag of the ecco-branch
2547    
2548    checkpoint51s_post
2549    o cleanup: removed various obsolete #define-s
2550    o pkg/grdchk
2551      - renamed 'ph-grd 3' to 'grad-res'
2552      - merged from ecco-branch
2553        (remaining bug fixes for obcs gradient checks)
2554      - additional high-precision output for testreport
2555        (grep for 'precision_grdchk_result')
2556    
2557    checkpoint51r_post
2558    o cleaned up or removed CPP_OPTIONS.h files
2559    o updated results for some of the tests to reflect the new
2560      optfiles (-ieee: -O0 instead of -O3)
2561    
2562    checkpoint51q_post
2563    o cd_code:
2564      - moved cd_scheme.F -> cd_code_scheme.F
2565      - separate read_checkpoint from cd_code_ini_vars.F
2566      - separated cd_code part from write_checkpoint
2567      - updated AD_SOURCE, generated .flow
2568      - added CD_CODE_VARS.h to the_main_loop
2569      - Moving cd_code specific store dir.s to pkg/cd_code
2570    o ctrl package totally restructured
2571      - pack/unpack now optional and decoupled from
2572        xx_/adxx_ I/O
2573      - ctrl_pack/unpack cleaned
2574        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2575      - confined inclusion of AD_CONFIG.h to where necessary.
2576    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2577    
2578    checkpoint51p_post
2579    o create initial cd_code package
2580      - WARNING: the initialization of fields within packages
2581        is broken because INI_FIELDS (where READ_CHECKPOINT is
2582        called) is called *before* PACKAGES_INIT_VARIABLES.
2583        This seems to be backwards since
2584        1) its important to initially zero the entire field including
2585           the "halo" region
2586        2) zeroing needs to be done *before* reading pickup info
2587           and the pickup call might or might not happen in any
2588           particular run
2589      - this needs an overhaul for R2
2590    o cleanup verification/*/code/GMREDI_OPTIONS.h
2591    o cleanup testreport
2592    
2593    checkpoint51o_post
2594    o bringing AD-related verif's up to date with genmake2
2595      - carbon/
2596      - global_ocean.90x40x15/
2597      - hs.94.1x64x5/
2598      - (front_relax/ )
2599    o (more) consistent directory structure for AD-related verif.'s
2600    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2601    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2602    o bug fix in find_alpha.F for MDJWF:
2603      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2604        change rho -> rho-rhoConst
2605      - replace call find_rho to find_rhonum
2606    o initialisation of rFlx extended to full array (required by TAF)
2607      and shifted to thermodynamics
2608    o removed PTRACERS.h in ptracers routine
2609    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2610    o Correcting initialisations for fVerU, fVerV.
2611    o helping TAF to recognize dependency on kUp for
2612      fVerU, fVerV
2613    o Replacing delZ by delR in pkg/ctrl/
2614    checkpoint51o_pre
2615    
2616    o undid all of cp51 pending some cleanups and discussion
2617    o added the [#include "AD_CONFIG.h"] statement to all files that need
2618       it for adjoint/tl #defines
2619     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2620     o removed tools/genmake since it no longer works
2621    
2622    checkpoint51n_post
2623    o modifications to make FREEZE flux visible to pkg/kpp
2624      - moved surfaceTendencyTice from pkg/seaice to main code
2625      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2626      - subroutine FREEZE now limits only surface temperature
2627        (this means new output.txt for global_ocean.90x40x15,
2628         global_ocean.cs32x15, and global_with_exf)
2629    o added surface flux output variables to TIMEAVE_STATVARS
2630    
2631    checkpoint51n_pre
2632    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2633    o added [#include "AD_CONFIG.h"] to all files that use the following
2634      defines:
2635      - ALLOW_ADJOINT_RUN
2636      - ALLOW_TANGENTLINEAR_RUN
2637      - ALLOW_ECCO_OPTIMIZATION
2638    
2639    checkpoint51m_post
2640    o incorporating changes to get TAMC/TAF working in genmake2
2641      - added new TAMC/TAF targets to the Makefile
2642      - various cleanups related to package handling
2643      - these changes should have no impact on the forward model
2644    
2645    checkpoint51l_post
2646    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2647     - faster algorithm for cal_addtime.F
2648     - higher precision arithmetic, where needed
2649     - pkg/exf *startdate variables changed from calendar date to
2650       model integration time
2651    
2652    checkpoint51l_pre
2653    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2654    o enable to apply restoring on S & T only in a latitude band.
2655    o update output (external_forcing_surf modif. change truncation errors)
2656       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2657    
2658    checkpoint51k_post
2659    o change default to: useNHMTerms=.FALSE.
2660     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2661       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2662     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2663        exp1, ideal_2D_oce
2664     - change data file of oceanic exp (leave the results unchanged for now)
2665       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2666    o set gravitySign automatically according to the vertical coordinate used
2667      (and change sign: back to "logical" value: +1 when R increases downward)
2668    o added an include barrier to the default CPP_OPTIONS.h and
2669      removed the #include "PACKAGES_CONFIG.h" from it
2670    o fix a bug in mom_fluxform (from chk51j_post)
2671    
2672    checkpoint51j_post
2673    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2674    o adjusted some flow directives (dynamics, thermodynamics)
2675    o added cubed-sphere case to test cost function
2676    o heckpoint_lev?_directives.h now include
2677      pkg-specific directives, whenever those are enabled.
2678    o Moving pkg-specific flow directives to corresponding pkg
2679      Moving pkg-specific differentiation list to corresponding pkg
2680      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2681      ---> conventions are
2682           - pkg_ad.flow
2683           - pkg_ad_diff.list
2684           - pkg_ad_check_lev?_dir.h
2685    
2686    checkpoint51i_post
2687    o merge of the branch-genmake2
2688      - knowingly breaks the older genmake
2689      - automatic generation of all ALLOW_${PKG_NAME} defines
2690      - new testreport supersedes older testscript
2691    o large number of package inclusion and header cleanups
2692    checkpoint51i_pre
2693    
2694    o new output for adjoin of global ocean vector invariant
2695    o fix for checkpoint of thermodynamic seaice and bulk_force
2696    o Steph gchem various cleanups
2697    
2698    checkpoint 51h_pre
2699    o fixed some single quotes
2700    o modify gchem pkg to be more versatile
2701    o modifications to clean up dic pkg
2702    o add pkg/cfc
2703    
2704    checkpoint51g_post
2705    o provide links for ARPACK and ADM*TLM
2706    o start removing verification/vero/
2707    o update AD-related stuff
2708      (in particular some IF-statements in model/src/ routines)
2709    o adding to verification/global_ocean.90x40x15/ adjoint of
2710      vector invariant setup
2711    
2712    checkpoint51f_post
2713    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2714    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2715      of tracer Green's fucntions for ocean inversion project.
2716    
2717    checkpoint51f_pre
2718    o Added on-the-fly spatial interpolation capability
2719        "USE_EXF_INTERPOLATION" to pkg/exf.
2720      - This is a temporary Cartesian-grid hack until
2721        the super-duper ESMF coupler becomes available.
2722      - See verification/global_with_exf/README for usage example.
2723      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2724        flags and modified pkg/seaice accordingly.
2725    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2726        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2727        non-local transport term.
2728    
2729    checkpoint51e_post
2730    o pkg/mom_vecinv:
2731      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2732      - add time-ave diagnostic of vorticity advection.
2733    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2734    o atmospheric geopotential: - include water vapor effect;
2735                                - use p^kappa in p* scaling.
2736    o land pkg: read initial state from files.
2737    o AIM : add stratospheric drag in the upper level
2738    
2739    checkpoint51d_post
2740    o change function ILNBLNK (=> last non-blank char.) to return zero
2741      (instead of the string length) when the string. char is empty
2742    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2743    o modif's to restore TAMC compatibility
2744      - avoid "_d" constructs in PARAMETER declarations
2745      - avoid interrupting lines by comment lines
2746    o Use cluster local disks for purely local I/O
2747      vs. globally visible disks needed for ctrl stuff
2748      (merged from ecco-branch)
2749      - new active_file_loc... and mdsio_..._loc routines
2750      - affected packages: autodiff, ctrl, grdchk, mdsio
2751    
2752    checkpoint51c_post
2753    o introducing integer flag debugLevel
2754      - debLevZero: suppress all output
2755      - debLevA: standard
2756      - debLevB: equivalent to current debugMode=.TRUE.
2757    o introducing pathname variable mdsioLocalDir for mdsio
2758      that can be specified at runtime
2759      (relevant for cluster I/O to local disk)
2760    `
2761    >>>checkpoint51b_post
2762    adjoint of ptracers
2763    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2764    o extended state in checkpoint_lev?, etc.
2765    o alternative ctrl/cost with tr1 or ptracer
2766    o new comlev1_bibj_ptracers
2767    o new ptracers.flow
2768    o made ptracers_forcing same as external_forcing_s
2769    o added verification for adjoint with ptracers
2770      - adm. grdchk fail so far
2771      - tlm. grdchk OK
2772      - checked tapelev/comlev recomputations: OK
2773    <<<checkpoint51b_pre
2774    
2775    checkpoint51a_post
2776    o added code for biogeochemistry package
2777      - new pkgs: dic, gchem
2778      - new subroutine in ptracers
2779    o modify code for biogeo packages
2780      - in model/src and pkg/ptracers
2781    
2782    checkpoint51
2783    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2784      - autodiff, ctrl, exf, grdchk, seaice
2785      kept separate packages
2786      - cost, ecco, obcs
2787    o updating verification/internal_wave, verification/lab_sea
2788      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2789    
2790    checkpoint50i_post
2791    o Preparing next differentiable checkpoint and sync
2792      of MAIN vs. ecco-branch
2793      - 1st step: this one is differentiable
2794      - 2nd step: next(! not this) checkpoint will have updated packages
2795                  from ecco-branch)
2796    
2797    checkpoint50h_post
2798    o new package "land": provide surface BC for AIM.
2799    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2800    o AIM: use true log-P extrapolation for near surface temp (= as in
2801        F.Molteni paper) ; update aim.5l_cs output.
2802    o New variable in PARM03 for more flexible pickups
2803    o somewhat cleaned package initialisation sequence for
2804      ctrl/ cost/ ecco/ in packages_... routines
2805    
2806    checkpoint50g_post
2807    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2808      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2809      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2810        made the default because of faster convergence than ADI
2811    
2812    checkpoint50f_post
2813    o exf totally restructured
2814      - replaced all exf_set_ routines by one generic exf_set_gen.F
2815        and made sure it's still differentiable
2816      - split exf_getffields.F into new exf_bulkformulae.F
2817      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2818      - updated adjoint/makefile and relevant verif. accordingly
2819    
2820    checkpoint50f_pre
2821     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2822          + change Evap over land. (update aim.5l_cs output)
2823     o added missing .cvsignores and made uniform across expts
2824     o changed configuration of tidal_basin_2d expt
2825     o added pkg/debug functions for tracing code in fatal crashes
2826     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2827     o new fn in pkg/monitor to stop model if solution grows too big
2828     o removed lots of single quotes from comments
2829    
2830    checkpoint50e_post
2831    o make KPP work with PTRACERS
2832     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2833       nearly a copy of kpp_transport_s
2834     - there is no analogue to SurfaceTendencyS, so I have to use
2835       gPtr(of the surface layer) instead
2836    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2837    checkpoint50e_pre
2838    
2839    checkpoint50d_post
2840    o change kpp output from multiple-record state files to single-record state
2841      files analogous to write_state.F
2842    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2843      analogous to the cg2d-related output.
2844    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2845      so that writing to internal file fn (with length 512) fails.
2846    checkpoint50d_pre
2847    
2848    checkpoint50c_post
2849    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2850    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2851    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2852    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2853    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2854    
2855    checkpoint50c_pre
2856    Merging from release1_p13:
2857    o bug fix for pkg/seaice dynamic solver
2858    o Added SEAICE_initialHEFF to pkg/seaice
2859    
2860    checkpoint50b_post
2861    o store u*,v* in gU,V instead of in guNm1,gvNm1
2862    o in order to put the momForcing out of the Adams-Bashforth:
2863      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2864      to timestep.F
2865    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2866    o re-generate output for highly sensitive test-exp:
2867       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2868    
2869    checkpoint50b_pre
2870    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2871    o corrected CPP option mismatch in exf_Bulk... functions for case
2872      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2873    
2874    checkpoint50a_post
2875    o Bug fix for merging between c50 and KPP.
2876      ikey was passed from thermodynamics to kpp_calc via
2877      common block rather than being recomputed in kpp_calc,
2878      in contradiction with new key itdkey.
2879      New key ikppkey created, and tamc.h headers updated.
2880    
2881    checkpoint50
2882    - 2nd step of merge with ecco-branch:
2883      merge changes in ecco-branch back into main trunk
2884    - bug fix in find_alpha
2885    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2886    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2887    - merged some sliced AD support routines
2888    
2889    checkpoint49
2890    merged from ecco-branch:
2891    o exf:
2892      - Enable initialisation of forcing fields to constant
2893        (runtime) values.
2894      - in exf_getffields.F
2895        Reduce i-/j-loop to interior domain, discarding overlaps.
2896        That also fixes wrong TAF-key computations for key_1, key_2
2897        with bulf formulae.
2898      - exf_init.F modify #ifdef for exf_init_evap
2899      - exf_getffieldrec.F, ctrl_getrec.F
2900        The following INT-usages are not safe:
2901          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2902          fldcount = int(fldsecs/fldperiod) + 1
2903        and were modified.
2904    o autodiff: checkpoint_lev...
2905      - updated storing for bulk formulae (some arrays were missing)
2906      - added state for seaice package
2907      - synchronized with main branch
2908    o DIVA:
2909      Modif.s in
2910      - the_main_loop.F
2911      - the_model_main.F
2912      and added cost_final_restore.F cost_final_store.F
2913      o With these changes, it is possible to fully separate
2914        the first forward run to compute the cost function (mdthe_main_loop)
2915        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2916        into separate model executions.
2917        This enables better tuning of DIVA to given queue sizes.
2918      o Loss of cost function value in consecutive DIVA runs is
2919        fixed by storing to 'costfinal' file.
2920      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2921        beginning/end of adjoint integration is accounted for.
2922      The current changes apply to TAF-1.4.26.
2923      TAF has one remaining bug, requiring one manual change
2924      (see MITgcm manual).
2925    o cal: synchronized between MAIN and ecco-branch
2926    
2927    checkpoint48i_post
2928    o Changes to restore differentiability of code w.r.t. previous tag
2929      (mostly adding new routines to make list and replacing
2930      pressure by totPhiHyd).
2931    o Updated and merged grdchk package
2932      - has both ADM and TLM checks
2933      - works for single- and multi-proc.
2934      - output cleaned
2935      - worked successfully for parallel DIVA
2936    o genmake:
2937      - Adding -platform=SP4
2938      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2939    o Modif. for DIVA:
2940      ctrl_unpack should not be called in intermediate DIVA interval.
2941      (similar thing would apply for active files such as
2942      tbar, sbar, psbar, which should not be reinitialised;
2943      only relevant for ecco-branch)
2944    
2945    checkpoint48h_post
2946    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2947    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2948    o Added SEAICE_initialHEFF to pkg/seaice
2949    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2950    
2951    checkpoint48g_post
2952    --- EOS:
2953    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2954      store total Potential in totPhyHyd for diagnostics & EOS.
2955    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2956    --- Pressure/geopotential gradient:
2957    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2958    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2959      ( changes results of global_ocean_pressure )
2960    o NLFS + z-coord.: add eta*Rho' contribution.
2961    o accurate phiHyd when using interface-W at the middle between 2 centers
2962     ( changes results of ideal_2D_oce )
2963    o includes r* 2nd term in potential gradient.
2964    
2965    checkpoint48f_post
2966    Merging from release1_p12:
2967    o Modifications for using pkg/exf with pkg/seaice
2968      - improved description of the various forcing configurations
2969      - added basic radiation bulk formulae to pkg/exf
2970      - units/sign fix for evap computation in exf_getffields.F
2971      - updated verification/global_with_exf/results/output.txt
2972    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2973      (SBO) core products, including oceanic mass, center-of-mass,
2974      angular, and bottom pressure (see pkg/sbo/README.sbo).
2975    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2976      to avoid negative values in shallow regions.
2977      - updated verification/natl_box/results/output.txt
2978      - updated verification/lab_sea/results/output.txt
2979    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2980    o Added useSingleCpuIO option (see PARAMS.h).
2981    o Updated useSingleCpuIO option in mdsio_writefield.F to
2982      work with multi-field files, e.g., for single-file pickup.
2983    o pkg/seaice:
2984      - bug fix in growth.F: QNET for no shortwave case
2985      - added HeffFile for specifying initial sea-ice thickness
2986      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2987    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2988      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2989    o pkg/seaice:
2990      - adjoint-friendly modifications
2991      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2992    
2993    checkpoint48e_post
2994    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2995    o dynamics: change definition of computational domain & adapt mom_fluxform
2996      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2997    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2998        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2999        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3000        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3001        inverted_barometer solid-body.cs-32x32x1
3002      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3003    
3004    checkpoint48d_post
3005    o in preparation for r*:
3006     a) use pre-computed gradient of hydrostatic potential:
3007        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3008     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3009        => affects results of glob_oce_pressure (different truncation error)  
3010      update output.txt of ideal_2D_oce & global_ocean_pressure
3011    
3012    checkpoint48d_pre
3013    o in preparation for r*:
3014      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3015      pass the 2 comp. of the grad. as arguments to momentum S/R.
3016      but for the moment, only used if it does not change the results.
3017    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3018    
3019    checkpoint48c_post
3020    Modifications in treatment of initial flux forcing controls
3021    to avoid extra storing of flux fields.
3022    
3023    checkpoint48c_pre
3024    o Added tidal_basin_2d experiment (currently 1D!)
3025    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3026    
3027    checkpoint48b_post
3028    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3029     (modification to pressure gradient not yet implemented)
3030    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3031      (for U & V) that are used for vertical advection of momentum.
3032    
3033    checkpoint48a_post
3034    o In preparation for r*, use temp. array to compute vertical transport
3035       in flux-form momentum pkg. => change results of few test-exp.
3036      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3037                        lab_sea, natl_box & plume_on_slope
3038    
3039    checkpoint48
3040    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3041    
3042    checkpoint47j_post
3043    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3044    o moved adexch from forward_step to addummy_in_stepping
3045    o added exch in ctrl_map_...
3046    o aveFreq.=0. at end of cost_final to avoid overwrite in
3047      reverse checkpointing loop
3048    o Yet more changes in gmredi:
3049      * adgmredi_calc_tensor
3050        avoiding all recomputation of gmredi_slope_limit
3051      * adgmredi_x/y/rtransport
3052        added flag for excessive storing to avoid recomp. of
3053        u/v/rtans, dTdx/y/z
3054        -> this is not really necessary and very memory-consuming
3055      * adgmredi_slope_psi:
3056        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3057      * gmredi_slope_limit
3058        re-activated full calculation of taperfct for case 'ac02'
3059    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3060    
3061    checkpoint47i_post
3062    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3063    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3064      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3065    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3066    o gmredi: fix few bugs.
3067    
3068    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3069    This will be a good checkpoint to plug into the ecco-branch.
3070    o few modif.'s to get latest version adjointed
3071      (mainly kick out code in ini_linear_phisurf)
3072    o modif's to run adjoint with exactConserv
3073    o case GM_BOLUS_ADVEC should be cleaned
3074      S/R gmredi_slope_psi should be cleaned
3075    o verification/carbon now has exactConserv=.TRUE.
3076    
3077    checkpoint47g_post
3078    o time-average AIM output: becomes independent from statvars time-average
3079      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3080    o After TAF bug fix:
3081      Tested adjoint of gmredi package.
3082      Tests were done with checkpoint47 rather than with latest
3083      checkpoint47f_post since the latter is broken for the adjoint
3084      verification/carbon/ contains both ADM and TLM gradient checks.
3085    Here they are, before they get changed/lost/stolen.
3086    Mostly modif.'s to fix numerical sensitivities.
3087    Gradient checks OK for
3088    - GM_taper_scheme:
3089      * clipping
3090      * ac02
3091      * linear
3092      * glw91
3093      * dm95
3094      * ldd97
3095    - GMREDI_OPTIONS:
3096      * GM_VISBECK_VARIABLE_K
3097      * GM_NON_UNITY_DIAGONAL
3098      * GM_EXTRA_DIAGONAL
3099      * GM_BOLUS_ADVEC
3100    in conjunction with data.gmredi parameters to be checked in
3101    in a few minutes under verification/carbon/code/
3102    
3103    checkpoint47f_post
3104    Merging from release1_p10:
3105    o modifications for using pkg/exf with pkg/seaice
3106      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3107        and SEAICE_EXTERNAL_FLUXES
3108      - pkg/exf CPP options EXF_READ_EVAP and
3109        EXF_NO_BULK_COMPUTATIONS
3110      - usage examples are Experiments 8 and 9 in
3111        verification/lab_sea/README
3112      - verification/lab_sea default experiment now uses
3113        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3114    
3115    checkpoint47e_post
3116    o created a tag prior to creating a branch
3117    
3118    checkpoint47d_post
3119    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3120      at the bottom boundary had an erroneous half slip boundary condition
3121    o added bottom drag and no slip boundary condition capabilities to
3122      oceanic pressure coordinates code
3123    o added new verification experiment global_ocean_pressure, this experiment is
3124      also described in the tutorial section of the manual
3125    checkpoint47d_pre
3126    
3127    checkpoint47c_post
3128    o Added a verification experiment for a global cubed-sphere ocean run
3129      -  verification/global_ocean.cubed32x32x30
3130      -  uses pkg/therm_seaice and pkg/bulk_forcing
3131    
3132    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3133    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3134      when using P-coordinate; only implemented for atmospheric config.
3135    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3136      NOTES: requires option NONLIN_FRSURF to be "#define".
3137    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3138    
3139    checkpoint47b_post
3140    Merging from release1_p9:
3141    o pkg/seaice
3142      - removed GOTO's and added taf directives
3143      - double precision constants to reduce the g77 (Linux)
3144        to F77 (SGI) differences reported in release1_p8
3145    o tools/genmake
3146      - added SGI options
3147    o verification/testscript
3148      - updated to that of checkpoint47a_post
3149    o verification/global_ocean.90x40x15/input/eedata
3150      - modified for SGI f77 compatibility
3151    o verification/lab_sea
3152      - added description of sea-ice model
3153      - added missing matlab routines
3154      - added test of thermodynamics parallelization
3155    
3156    checkpoint47a_post
3157    o new pkg: aim_v23
3158     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3159       for now, keep the same surface forcing as before.
3160     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3161     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3162     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3163    o add diagnostic of surface correction term in monitor output
3164    
3165    o bulk_force and therm_seaice
3166    - Two packages:  bulk_force (Bulk forcing)
3167      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3168    - Earlier integration from Stephaine Dutkiewicz
3169      and Patrick Heimbach.
3170    - Two ifdef statements for compile time,
3171       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3172    
3173    checkpoint47
3174    differentiable version of checkpoint46n_post
3175    o bug fix in quasihydrostaticterms
3176    o * "clean" adjoint code (in terms of extensive recomputations)
3177        can now be obtained for all GMREDI options (i.e. for
3178        - GM_VISBECK_VARIABLE_K
3179        - GM_NON_UNITY_DIAGONAL
3180        - GM_EXTRA_DIAGONAL
3181        - GM_BOLUS_ADVEC )
3182      * However, wrong gradient check problem remains unsolved.
3183      * New CPP options have been introduced for different
3184        tapering schemes
3185    o external_fields_load now part of differentiation list
3186    o pressure needs multiple storing;
3187      would be nice to have store_pressure at beginning or
3188      end of forward_step, e.g. by having phiHyd global (5-dim.)
3189      (NB: pressure is needed for certain cases in find_rho,
3190      which is also invoked through convective_adjustment).
3191    o recomputations in find_rho for cases
3192     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3193    o #define ATMOSPHERIC_LOADING should be differentiable
3194    o ini_forcing shifted to begining of initialise_varia
3195    o Incorporating QNVS line search routines into MITgcm
3196      (this is separate code, and therefore not under pkg)
3197      lsopt/, optim/
3198    o Updated verification/carbon/
3199      - #define GM_VISBECK_VARIABLE_K
3200      - GM_taper_scheme    = 'ldd97'    
3201    
3202    checkpoint46n_post
3203    Merging from release1_p8:
3204    o verification/natl_box:
3205      updating new external_fields_load routine
3206    o New package: pkg/seaice
3207      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3208      The sea-ice code is based on Hibler (1979-1980).
3209      Two sea-ice dynamic solvers, ADI and LSR, are included.
3210      In addition to computing prognostic sea-ice variables and diagnosing
3211      the forcing/external data fields that drive the ocean model,
3212      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3213      The implied surface heat flux is then stored in variable
3214      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3215      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3216      non-local transport term.  Because this call precedes model
3217      thermodynamics, temperature under sea-ice may not be "exactly" at
3218      the freezing point by the time theta is dumped or time-averaged.
3219      N.B.: fairly large differences in accuracy occur across
3220            different platforms/compilers; comparison between
3221            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3222            generated output gives:
3223       T           S           U           V
3224      C D M    c        m  s        m  s        m  s        m  s
3225      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3226      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3227      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3228    
3229      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3230    o GAD:
3231      - generated new common blocks to account for call of
3232        same gad routines with differing traceridentities
3233        (needed to modify tracerIdentity indices in GAD.h)
3234      - generated separate common blocks for case useCubedSphereExchange
3235        (Department of Futurology)
3236      - parameter lists to gmredi_?transport: added tracerIdentity
3237      - added new key indices to tamc.h
3238    o external_fields_load:
3239      - added this routine to TAF list
3240      - needed to make some common blocks global and additional storing
3241        along the same lines as exf package (checkpoint_lev?_directives.h)
3242    o exf:
3243      updated external forcing package
3244      - bug fixes carried over from ecco-branch
3245        (missing OBCS_OPTIONS.h in two routines)
3246      - enable easy to use "no forcing".
3247      - added exf I/O for atmospheric loading
3248      - added exf I/O for runoff data
3249      - transfered scaling between exf <-> MITgcm to exf namelist
3250    o Adding new verification experiment global_with_exf.
3251      This verification experiment is almost identical to the
3252      global_ocean.90x40x15 experiment, except that it uses
3253      the exf (and cal) package instead of the
3254      external_fields_load routine (cf README file).
3255    
3256    checkpoint46m_post
3257    o modified testscript to return -- when there are no lines of "%MON" output
3258    o added new flag "quasiHydrostatic" for QH mode
3259      and new routine quasihydrostaticterms()
3260    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3261      New routine: mom_u_coriolis_nh()
3262    o fixed sign of non-hydrostatic metric terms in u and v equations.
3263      Depend on correct sign of gravitySign.
3264    o added work.pc* to .cvsignore in aim directories using ifc
3265    o introduced flag for controllin non-hydrostatic metric terms
3266    o removed gravitySign from PARM04
3267    o switched to g77/ifc from pgf77 in aim experiments
3268    
3269    checkpoint46l_post
3270    o made convective adjustment work with pressure coordinates:
3271     - changed the direction of k-loop in convective_adjustment.F for the
3272       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3273     - adjusted the reference pressure k-index in convective_adjustment.F
3274     - adjusted the convection condition in convect.F (in analogy to
3275       calc_ivdc.F)
3276     - convective_adjustment no longer computes anything on the halos
3277     - removed the warnings about negative salinity from find_rho.F and
3278       find_alpha.F; instead the new routine look_for_neg_salinity, called
3279       at the beginning of find_rho, find_alpha, and find_beta, does a
3280       check of the entire slice, if CPP-option
3281       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3282    checkpoint46l_pre
3283    
3284    checkpoint46k_post
3285    o fixed the verification/global_ocean.90x40x15 experiment:
3286     - new bathymetry (the world according to A., JMC, and M.)
3287     - new initial fields and forcing fields (*.bin files)
3288     - new POLY3.COEFFS (for the next release one should switch to a full
3289       equation of state: JMD95P or MDJWF)
3290     - fixed several errors and redundancies in the data file
3291     - experiment uses looped cells
3292     - added matlab directory with diagnostic scripts for plotting of output
3293    
3294    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3295     - read AIM physics parameters from a file (data.aimphys)
3296     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3297    
3298    checkpoint46j_post
3299    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3300    o move wVel computation at the end of the time step, in S/R integr_continuity
3301    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3302    o update timeave pkg for wVel diagnostic.
3303    checkpoint46j_pre
3304    
3305    checkpoint46i_post
3306    o Clean up AIM package (and keep the results unchanged):
3307      include CPP_OPTION and use IMPLICT NONE in all routines ;
3308      declare all the variables _RL ; use _d 0 for all numerical constants.
3309      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3310    
3311    checkpoint46h_post
3312    o cleaned up the use of rhoNil and rhoConst.
3313      - rhoNil should only appear in the LINEAR equation of state, everywhere
3314        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3315        and the dynamical equations are all divided by rhoConst
3316    o introduced new parameter rhoConstFresh, a reference density of fresh
3317      water, to remove the fresh water flux's dependence on rhoNil. The default
3318      value is 999.8 kg/m^3
3319    o cleanup up external_forcing.F and external_forcing_surf.F
3320      - can now be used by both OCEANIC and OCEANICP
3321    checkpoint46h_pre
3322    
3323     Added code to convert surface volume flux (fresh water) into
3324     a mass flux when using P coordinates in the ocean (OCEANICP).
3325     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3326    
3327    checkpoint46g_post
3328    o Include a new diagnostic variable phiHydLow for the ocean model
3329      - in z-coordinates, it is the bottom pressure anomaly
3330      - in p-coordinates, it is the sea surface elevation
3331      - in both cases, these variable have global drift, reflecting the mass
3332        drift in z-coordinates and the volume drift in p-coordinates
3333      - included time averaging for phiHydLow, be aware of the drift!
3334    o depth-dependent computation of Bo_surf for pressure coordinates
3335      in the ocean (buoyancyRelation='OCEANICP')
3336      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3337        Theta, Salinity, and Pressure in the parameter list. This routine is
3338        presently contained in find_rho.F. This routine does not give the
3339        correct density for 'POLY3', which would be a z-dependent reference
3340        density.
3341    o cleaned up find_rho
3342      - removed obsolete 'eqn' from the parameter list.
3343    o added two new verification experiments: gop and goz
3344      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3345    checkpoint46g_pre
3346    
3347    checkpoint46f_post
3348    o Enable tangent linear (forward mode) gradient checks:
3349      - extended active file handling to g_... files
3350      - added TANGENT_SIMULATION to theSimulationMode
3351      - extended grdchk package accordingly
3352    o added tangent linear setup in verification/carbon/code_ftl
3353    o added adjoint setup in verification/front_relax/code_ad
3354    
3355    checkpoint46e_post
3356    o Added new equation of state -> MDJWF
3357      - EOS of McDougall et al., 2002, JAOT, submitted
3358      - caveat: the equation of state is only valid for a smaller (more
3359        realistic?) range of values than JMD95P/Z and UNESCO
3360      - added masks to the calculation of pressure in store_pressure
3361      - added more check values for density in check_eos (ini_eos.F), some of
3362        the old check values are out of the range of the MDJWF-eos, so don't
3363        expect perfect matches for those
3364    checkpoint46e_pre
3365    
3366    checkpoint46d_post
3367    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3368      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3369      case of pressure coordinates. eosType='JMD95Z' in
3370      combination with buoyancyRelation='OCEANICP' now causes an error.
3371    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3372      in find_alpha/beta.
3373    checkpoint46d_pre
3374    
3375    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3376      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3377    
3378    checkpoint46c_post
3379    o Changes necessary for ocean in p-coordinates
3380     -  Added new buoyancy relation = 'OCEANICP'
3381     -  Added new parameters = gravitySign (this used to be contained inside
3382        the factor dRdZ which I added when we first switched to R coordinates).
3383     X GM/Redi is not compatible (yet)
3384     X bottom drag and no-slip need to be debugged.
3385    checkpoint46c_pre
3386    
3387    checkpoint46b_post
3388    o Added new equation of state -> JMD95Z and JMD95P
3389      - EOS of Jackett and McDougall, 1995, JAOT
3390      - moved all EOS parameters into EOS.h
3391      - new routines ini_eos.F, store_pressure.F
3392    o Added UNESCO EOS, but not recommended because it requires
3393      in-situ temperature (see JMD95)
3394    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3395      unesco.f to be used with POLY3
3396    checkpoint46b_pre
3397    
3398    checkpoint46a_post
3399    o Added (atmospheric) pressure loading
3400      - new field in FFIELDS.h, etc...
3401      - new cpp flag ATMOSPHERIC_LOADING
3402    o Changed hFacC to _hFacC in calc_phi_hyd.F
3403    o Added SHORTWAVE_HEATING to some files for consistency
3404    checkpoint46a_pre
3405    
3406    checkpoint46
3407    further merges from release1_p5
3408    o new ctrl package
3409      - adopted from ECCO environment to enable optimization
3410      - added Eliassen Palm fluxes to controls
3411    o added Eliassen Palm flux controls to gradient check package
3412    o cost package
3413      - Compatible with new ctrl package
3414      - added Eliassen Palm cost hooks
3415      - modif's of existing cost functions
3416    o Adjoint-related bug fixes in kpp:
3417      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3418      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3419    o autodiff package
3420      - flow directives:
3421        + new for S/R do_the_model_io
3422        + enhanced for S/R checkpoint
3423        + new gmredi.flow
3424      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3425        disable adcommon.h/g_common.h by default.
3426      - fixed problem for adjoint of global_max
3427    o modified verification/carbon/
3428    o New setup for adjoint of global_ocean
3429    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3430    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3431    o incorporated hooks for sponge layer code (external_forcing.F)
3432    
3433    checkpoint45d_post
3434    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3435    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3436      (affects plume_on_slope "cg2d" output)
3437    o add new parameter deltaTfreesurf for free-surface time stepping
3438    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3439    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3440    o change phiMin in exp1 (to agree with documentation)
3441    o add new flags:
3442     - T,S forcing inside/outside Adams-Bashforth
3443     - turn off temp,salt advection and/or forcing
3444     - for each tracer, define internal flag for multiDimAdvection & A-B
3445    o monitor: change definition of KE to check conservation of Energy
3446    
3447    checkpoint45c_post
3448    o Removed f90 comments ("!")
3449    o Modified initialisations to enable exf package for MITgcm
3450      (without invoking ECCO_PACKAGE).
3451    o modifications to gradient check package (Martin Losch)
3452      - enable centered differences
3453      - modified format of standard output
3454    
3455    checkpoint45b_post
3456    o cleaned exchange calls in cg2d
3457    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3458    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3459      to configure barotropic setup (Martin Losch)
3460    o moved some initialisations within bi,bj loop in dynamics
3461      (TAF flow dependency)
3462    o in initialise_varia, moved call packages_init_variables
3463      before convective_adjustment_init
3464      (corresponding adjustment of TAF tape initialisation).
3465    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3466    
3467    checkpoint45a_post
3468    o compute Rho over the whole domain (extend iMin,jMin indices)
3469    o specific exchange for X-slice domain (case Ny=1)
3470    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3471    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3472    
3473    checkpoint44h_post = checkpoint45
3474    o Fix to restore differentiability:
3475      place at which packages_init_variables is called in
3476      initialise_varia is crucial for reverse control flow.
3477    o modifications in GMRedi to enable stable adjoint
3478      (corresponding modif's in thermodynamics, dynamics)
3479    o added missing hook for sponge layer code in external_forcing
3480    o modified test cost functions
3481    o storing in gad_advection (plus removal of write(0,*)!
3482    o missing headers TR1.h added in convective_adjustment routines
3483    o errorMessageUnit set non-equal zero in eeboot
3484      (conflict on some platforms, e.g. IBM SP3)
3485    o modified carbon verif.
3486    
3487    checkpoint44h_pre
3488    o vertical grid option: allow to put the Interface at the middle between
3489      2 cell-centers ; replace delZ in pkg/kpp by drF.
3490    o GM Advective form: Tracers are advected using the residual transport (=
3491      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3492    
3493    checkpoint44g_post
3494    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3495      results) ; ifdef missing in thermodynamics.F
3496    
3497    checkpoint44f_pre,checkpoint44f_post
3498    o added PTRACERS package
3499      This allows an arbitrary number of passive tracers to be integrated
3500      forward simultaneously with the dynamicaly model.
3501      + Implemented so far:
3502        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3503        - I/O and checkpointing
3504        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3505      + Not implemented so far:
3506        - KPP
3507        - OBCS
3508      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3509        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3510        line in data.pkg.
3511      + This package is disabled by default since it increases storage.
3512    
3513    
3514    o testscript: added -cleanup option
3515    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3516                 b) enable to filter 2D fields.
3517    
3518    checkpoint44e_pre,post
3519    o re-wrote convective adjustment to use pre-calculated weights
3520      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3521      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3522      Original calls to convect() still in place.
3523    
3524    chkpt44d_pre,post
3525    o added missing EXCLUDE_MONITOR flags
3526    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3527      (incompatible typ in MIN/MAX expressions caused problems
3528      on IBM SP3)
3529    o in genmake added variable MAKEDEPEND
3530      plus resetting for case SunOS
3531    o added timer_stats.c routine for IBM SP3
3532    o removed variables in dynamics
3533    !!! I forgot to create tag chkpt44d_pre !!!
3534    !!! But chkpt44d_pre = chkpt44c_post    !!!
3535    
3536    o real fresh water flux implemented with non-linear free-surface.
3537    
3538    chkpt44c_pre,post
3539    o few fix (mask in shap_s2, EmPmR in external_field_load,
3540      USE_NATURAL_BCS in solve_for_P);
3541    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3542    
3543    checkpoint44b_pre/_post
3544    o merge of relevant stuff from the ecco-branch:
3545      - genmake: removed $S64 overwrite for case SunOS
3546      - pkg/exf: update and corrections for field swapping and obcs
3547      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3548                  harmonized between ECCO and MITgcm
3549      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3550                      updated checkpointing_lev... lists for obcs
3551      - model/src: minor changes in forward_step, plot_field
3552                   added directive for divided adjoint in the_main_loop
3553      - pkg/mdsio: added mdsio_gl_slice
3554    
3555    o check parameters & config (chkpt44a_pre,post)
3556    o OBC and NonLin_FrSurf.
3557    
3558    checkpoint44
3559  o fix bug in mom_vi_del2uv  o fix bug in mom_vi_del2uv
3560    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3561    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3562    o update AIM experiments (NCEP input files)
3563    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3564    o added some stuff for AD
3565    
3566  checkpoint43  checkpoint43
3567  o added two new advection tests  o added two new advection tests

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