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revision 1.765 by jmc, Fri Jan 12 19:18:24 2007 UTC revision 1.989 by jmc, Fri May 9 21:51:26 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/generic_advdiff:
8      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
9      applies to files where Temperature & Salinity 2nd Order moments are used.
10    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
11      this uses a dynamically allocated internal state data structure
12      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
13      and requires a fortran 90 compiler
14    
15    checkpoint59q
16    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
17       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
18    o Refresh tutorial_global_oce_biogeo, notably:
19      - change bathymetry (put back seamounts in ACC, use hFacs)
20      - change EOS (POLY3 --> JMD95Z)
21      - use Bryan-Lewis vertical diffusivity
22      - use multidimensional advection
23      - remove old virtual virtual in dic pkg, now done through ptracer pkg
24      - change a couple of parameters in dic pkg
25    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
26    o pkg/obcs: change default to OBCSfixTopo = .true.,
27      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
28      - replace "debugMode" with "debugLevel .GE. debLevB"
29    o implementation of TAF directives for gchem,cfc,dic
30    o remove "exp5" (replaced by tutorial_deep_convection).
31    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
32      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
33      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
34      --> changes results in exp4, seaice_obcs
35    o tutorial_deep_convection :
36      update the set-up and increase resolution and domain size ; start
37      from pseudo initial conditions = output at t=120mn in order to see
38      something happening when running testreport.
39    o pkg/seaice: add os7mp as an advection scheme
40                  add check for advection schemes
41                  add a flag for restoring T and S underneath sea ice
42    o pkg/my82: add netcdf-support and diagnostics
43    o thsice pkg:
44      - Now hsMax limits snow height by turning it into ice following
45        flooding scheme (and now conserving energy)
46      - Slight rewriting of the formula in thsice_calc_thick.F
47      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
48      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
49    
50    checkpoint59p
51    o gchem / dic / cfc :
52      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
53      - add new parameter files: "data.dic" & "data.cfc" ;
54      - various re-arrangement in initialisation & header file ;
55      - fix tutorial_global_oce_biogeo for multi-threaded test.
56    o pkg/dic: test for "pickup_dic" file when restarting ;
57      if no pickup-file, can restart with a re-initialised pH (same as it did
58      before) providing pickupStrictlyMatch is set to False.
59    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
60      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
61    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
62      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
63    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
64     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
65       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
66    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
67       scheme to use for vorticty-term ;
68     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
69       (with default selectVortScheme, return to original discretisation)
70     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
71    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
72    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
73      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
74      also fix diagnostics VISCAHW & VISCA4W.
75    
76    checkpoint59o
77    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
78    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
79      move a few statemens out the main loop into separate loops
80    o pkg/shelfice:
81      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
82        (kg/m^2/s), does not break tests, because in verification/isomip,
83        rhoConstFresh=rhoConst (by accident)
84      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
85      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
86        new file model/src/seawater.F, so that they are available for all pkgs.
87      - convert potential temperature into in-situ temperature. This changes the
88        isomip tests => update tests
89    o add a flag writePickupAtEnd (default=true) to be able to suppress
90      writing a pickup at the last timestep
91    o tools/mpack-1.6 :
92      - disable automake (not working) and autoconf (not needed).
93      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
94        also cleaner with much less compilation warnings.
95    o pkg/profiles:
96      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
97      (for "less than 32 characters name" compiler requirement)
98    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
99      conditions that have a different sampling frequency than S/T/U/V obcs
100    o pkg/diagnostics (stats-diags):
101      - fix global Min/Max in case 1 processor get only empty tiles
102    o genmake2: replace (4 times)
103         make genmake_tc_1.o >> genmake_warnings 2>&1
104      with
105         COMM="$CC $CFLAGS -c genmake_tc_1.c"
106         echo $COMM >> genmake_warnings
107         $COMM >> genmake_warnings 2>&1
108      to make genmake2 always see the value of CC as specified in the optfile.
109    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
110      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
111      - modify verification advect_cs test to test SOM-advection on CS-grid.
112    o pkg/ctrl:
113      - Rewrite of ctrl_map_ini_ecco.F,
114        introducing a generic routine (ctrl_map_ini_gen.F).
115      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
116    
117    checkpoint59n
118    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
119      number in dedicate array "hdiag":
120      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
121        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
122      - many small changes (integer format) for large number of diagnostics
123      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
124        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
125    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
126      usingSphericalGrid, this allows to define the rotated grid coordinates
127      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
128      geographical coordinates according to the inverse of the rotation defined
129      by the Euler angles, so that Coriolis parameter and online-interpolation by
130      exf works with the geographical coordinates on XC/YC/XG/YG.
131      Naturally, this feature does not work with all packages, so some
132      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
133      profiles), because there the coordinates are assumed to be regular
134      spherical grid coordinates.
135    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
136      - introduce isopycnal diffusion coefficient control.
137    o tools/adjoint_options:
138      - additional control vector components.
139    o pkg/mnc: have mnc create marginally meaning full coordinate variables
140      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
141    o pkg/mypackage:
142      - add example of read/write pickup for state-var ;
143      - add entry points to the main code for state-vars diags & write-pickup.
144    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
145      transitions for useExfYearlyFields
146      - add new subroutine that determines the file to read from for
147        use*YearlyFields = .TRUE. and .FALSE.
148      - add a verification experiment to global_with_exf that tests
149        useExfYearlyFields with USE_EXF_INTERPOLATION defined
150    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
151      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
152      subroutines (which could be generated from a template, because they are
153      almost identical), for now they are included in obcs_prescribe_read.F for
154      simplicity
155    o pkg/exf:
156      - add a little more diagnostic to exf_interp_read (in analogy to
157        mds_read_field, can be turned off with debugLevel < debugLevA=1)
158      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
159        ugly but fast by unrolling short inner loops, inserting a unroll=8
160        directive in routine lagran, and splitting a loop and making do while the
161        outermost loop (the latter requires the intoduction of index arrays)
162    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
163    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
164      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
165    o verification/seaice_obcs: updated for restart test and latest options
166    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
167      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
168      for now this is only available for the C-grid code and also within
169      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
170    
171    checkpoint59m
172    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
173      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
174    o gad_som : fix flux output (& diagnostics) to have same units as other  
175      advection scheme fluxes (was previously multiplied by deltaT).  
176    o added verification/seaice_obcs both to test seaice open boundaries
177      and to provide an example matlab scrpt for generating them
178    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
179    o pkg/salt_plume: clean up salt_plume_frac.F to
180      remove redundancy in PlumeMethod 1 and 4
181    o pkg/kpp: added saltplume diagnostics
182    o pkg/obcs and pkg/seaice:
183      - do not set uice and vice to zero when OB*icefile are unspecified
184      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
185      - moved seaice tracer obcs after call to seaice_growth
186    o pkg/salt_plume: added various options for salt plume depth
187      criterion and for vertical distribution of the salt
188    
189    checkpoint59l
190    o pkg/ptracers: new version of ptracers pickup:
191      read meta file and write only fields which are needed to restart.
192      ( same logic as main pickup file ; also using pickupStrictlyMatch )
193    o pkg/seaice:
194      - add timescale for melting due to warm mixed layer as a means of
195        setting SEAICE_availHeatFrac more conveniently
196      - add a CPP-flag/runtime parameter check for flooding algorithm
197      - reformulated availHeat in seaice_growth.F to be independent of AREA
198    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
199      unit changes
200    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
201    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
202      SX vector computer.
203    o pkg/seaice:
204      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
205        seaice forcing fields can now be read only through pkg/exf
206      - removed some unused halos
207    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
208    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
209      or U/VICE from U/VWIND before computing U/VSTRESS
210    
211    checkpoint59k
212    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
213      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
214    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
215      all experiments pass when compile with un-initialised var. checking option.
216    o added pkg/salt_plume
217    o script to test restart (for now, in MITgcm_contrib/jmc_script)
218    o pkg/seaice: new read/write pickup version.
219      read meta file and write only fields which are needed to restart.
220      ( same logic as main pickup file ; also using pickupStrictlyMatch )
221    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
222    o lab_sea.hb87: modify the domain & update output.hb87.txt :
223      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
224      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
225      process. Fixed here by closing the domain at the Northern boundary.
226    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
227    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
228      a set of consecutive levels in/from a 3-D array.
229    o pkg/ptracers:
230      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
231      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
232    
233    checkpoint59j
234    o in pkgs: dic, obcs, offline, rbcs:
235      standard way to compute coeff. for time interpolation between 2 time reccords
236      which retains full precision (& make results less dependent on compiler).
237      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
238    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
239      packages instead of reading ice cover and wind speed separately
240    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
241     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
242      to allow to compile customized code before the update)
243    o cleaning-up:
244      - fix CPP instruction syntax in pkg/obcs
245      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
246        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
247      - fix some threads issue in IO parts.
248    o pkg/dic:
249      - add tons of "_d 0" (--> much better testreports !)
250       and then update outputs of tutorial_global_oce_biogeo
251    o pkg/mom_fluxform:
252      add a special version of momentum advection intended to conserve momentum
253      next to a bathymetry step or a coastline edge. (default = off = #undef)
254    o new read/write pickup version:
255      - for now, only implemented for main (mdsio) pickup file.
256      - write out only what is needed to restart; merge pickup_nh , pickup_ph
257        and main pickup together.
258      - read meta file; read only what is needed to restart; stop if a field
259        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
260        if it make sense (even if the restart is not perfect).
261      - if no meta file, assume that pickup to read corresponds exactly to
262        a pickup that would currently be written.
263      - read pickup written in the old format (until checkpoint59i) if it
264        recognizes an old meta file (no field-list).
265      - add a meta file in exp. which starts from a pickup: 2 cases:
266        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
267         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
268        b) a meta file describing the content of the associated pickup file
269         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
270    o pkg/mdsio & pkg/rw:
271      - new routine to read a meta file ; new set of routine to read
272        Multiple-fields file (with meta file).
273    o added open boundary conditions capability for seaice
274        HSNOW, HSALT, UICE, and VICE
275    
276    checkpoint59i
277    o adjoint:
278      * fix multiDimAdvection adjoint
279        (partial recomputation problem by TAF for fVerT(:,:,kDown)
280        and comlev1 size definition (maxpass vs. max. number of tracers)
281      * verification/global_ocean.90x45x15 adjoint now tests
282        NLFS and multiDimAdvection using DST3 (=30)
283      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
284    o pkg/kpp: add "_d 0" to real constant (if missing);
285      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
286      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
287    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
288      for internal parameters related to restart process (formerly from PARAMS.h)
289      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
290    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
291      as argument. (only atm2d & obcs write_pickup have not yet been updated)
292    o pkg/monitor:
293      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
294      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
295      - account for deep Atmosphere factor and density factor (anelastic)
296    o added open boundary conditions capability for seaice HEFF and AREA
297    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
298      thermodynamics
299      - requires a little reorganization, which affects the testreport results
300        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
301        so that now the conservative form is tested
302      - add a few comments
303    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
304    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
305    o add new diagnostics to seaice: advective, diffusive fluxes (only for
306      multidim-advection, for scheme 2 they are not filled) and transports,
307      thermodynamic growth rates
308    o change units of EmPmR (inside the code, + within coupling interface)
309      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
310      Affects results @ truncation level (cg2d match) and update output of
311       experiments: lab_sea(6), global_ocean.90x40x15(10),
312      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
313      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
314      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
315      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
316    
317    checkpoint59h
318    o pkg/exf:
319      - improve vectorization by moving if-statement out of loops in
320        exf_mapfields, exf_radiation
321      - exf_bulkformulae.F: introduce 2D fields and vectorize code
322    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
323    o testreport:
324      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
325        monitor & update offline_exf_seaice exp. output.
326      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
327    o pkg/seaice:
328      - bug fix in the evp solver: boundary conditions were affected be
329        masking of zMax/zMin (changes results)
330      - minor bug fix in boundary conditions in seaice_calc_strainrates
331        (changes results for no_slip)
332      - seaice_lsr.F: make interpolation of eta dependent on boundaries
333      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
334      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
335        stress formulation and no-slip boundary conditions
336    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
337      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
338    o pkg/seaice: a first HSALT time stepping equation has been checked in
339    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
340      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
341      without requiring DO-IF statements
342    o pkg/thsice:
343      use continuous power-law function for partition of energy between lateral
344      melting/freezing and thinning/thickening ; old code using step function
345      still available with #undef THSICE_FRACEN_POWERLAW
346      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
347    o testreport: change AD testing : check against results/output_adm.txt
348      using same scripts as for forward test.
349    
350    checkpoint59g
351    o adjoint testing: in preparation for changing testreport:
352      - output format: cost and grad written on separated lines
353      - ad output results in directory "results" (instead of "results_ad")
354    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
355    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
356    o pkg/ecco: allow user defined cost function contributions
357    o testreport:
358      Allow to choose (per experiment) the list of tested output variables
359       and the main variable (used to issue a pass/FAIL ) ;
360      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
361      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
362      Also modify printing of summary:
363       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
364       b) echo the list of tested variables in the individual summary.txt of
365          each experiment.
366    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
367      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
368      (but still depend on the tile decompostion of the domain).
369    o pkg/seaice: change a discretization detail to make the B-grid code
370      "more symmetric". This change is likely to remove all "ridges/leads" that
371      where quasi-aligned with the grid in B-grid solutions. It may also be
372      the solution to the stress coupling issues with the B-grid.
373    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
374      remove .cvsignore from input dir. (since testreport no longer run here).
375    o pkg/thsice:
376     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
377     - fix reshaping of sea-ice just after advection:
378       melt all the ice only if ice-volume is too small.
379     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
380       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
381     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
382    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
383      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
384    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
385      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
386      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
387      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
388      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
389      -> update output.txt
390    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
391     this affects truncation error: -> update output.txt of exp:
392      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
393      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
394    
395    checkpoint59f
396    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
397    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
398      a bounded range (in forward mode)
399    o pkg/ecco, ctrl, autodiff and mom_common:
400     internal parameter controls, completements of implementations
401    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
402    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
403      (not seem any difference in testing results).
404    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
405       at face corners.
406    o pkg/generic_advdiff:
407     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
408      loop range indices for computing vertical advection tendency
409      and do the calculation in the interior only (no overlap) ;
410      for now, only implemented for SOM advection (to save CPU time).
411     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
412    o exch2 adjoint
413      First set of changes:
414      - add exch2 hand-written adjoint templates
415      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
416        This will require cleanup in pkg/autodiff/*.F
417        (changed routines currently kept separate in verif. code/)
418      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
419        that used to hide exch2 or cubed-sphere specific code
420        (commented via 'cph-exch2')
421    o pkg/seaice
422      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
423    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
424       output of global_ocean.cs32x15.thsice .
425    
426    checkpoint59e
427    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
428      for B-grid vector (not yet tested) and C-grid vector (<- only used
429      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
430    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
431      (#ifdef ALLOW_SALT_PLUME)
432    o gather_2d/scatter_2d: removed halo regions
433    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
434      scheme and the corresponding test case (under front_relax dir). For now,
435      only available with Skew-flux form and not yet tested in realistic set-up.
436      adjoint: store directives updated, but gradient checks deteriorated,
437      so maybe GM/Redi adjoint is now broken.
438    o seaice adjoint
439      * add AREA, HEFF, HSNOW as control variable
440        (should not change lab_sea results)
441      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
442    o pkg/seaice:
443      * added computation of saltFlux in seaice_growth;
444        For time being, sea ice salinity is assumed constant
445        contribution of snow flooding to freshening of sea ice is neglected.
446        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
447        defaults to 0.0 in order to maintain backward compatibility.
448        Typical values for SEAICE_salinity are 4 to 10 g/kg.
449      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
450      * added SEAICE_availHeatFrac, which specifies fraction of surface level
451        heat content used to melt or grow ice
452      * commented out cap of HICE: it helps keep ice thinner
453      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
454      * applied OBCS T/S mask to HEFFM sea ice mask
455    
456    checkpoint59d
457    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
458     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
459     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
460    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
461     and change default value of parameter "GM_Small_Number";
462     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
463       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
464       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
465    o pkg/ecco: cost function when applying pkg/smooth to controls
466    o pkg/ctrl: add forcingPrecond run time parameter
467    o pkg/seaice:
468     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
469     - fix bug in metric terms of u-equation in LSR solver (implicit part),
470       changes verification/lab_sea
471     - rearrange implicit part of u-equation in LSR solver to make it easier to
472       read, understand, and debug. This causes changes at the truncation level.
473     - fix (serious) bug in the boundary conditions (sign error in the implicit
474       part) of the LSR solver. Changes all LSR results.
475     - fixed problem with HSNOW initialization to avoid thick snow when AREA
476       is initilized with small values - does not change lab_sea results.
477     - added HsnowFile initialization capability
478    o pkg/smooth: addition to model/src and pkg/ctrl so allow
479     initialization of pkg/smooth and application to control vector
480    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
481    o dependencies: pkg/profiles requires pkg/cal
482    o pkg/profiles:
483     - added option ALLOW_PROFILES_GENERICGRID
484         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
485         that interpolation information (grid points and coefficients) is provided
486         within the netcdf input files.
487         -> sample matlab scripts can be found in MITgcm_contrib/gael
488         that allow you to prepare netcdf input files.
489     - also modified: cleaner include statements, cleaner error print statements,
490       cleaner stops when error, and more tests of the netcdf input files consistency.
491    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
492    o pkg/seaice:
493     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
494       requires a new routine: seaice_diagnostics_fill.F
495     - make sure that seaice does not move if not forced (pressure replacement
496       method, Hibler and Ip, 1995), changes results
497     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
498     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
499       It is turned off by default (=-1.), because it changes the results.
500     - make it possible to read AREA from a file, too.
501    
502    checkpoint59c
503    o add S/R and diagnostics for oceanic mixed-layer depth
504    o move GMRedi call after all vertical mixing schemes (including KPP)
505    o pkg/thsice:
506     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
507      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
508    o pkg/obcs:
509     - bug fix for balance code
510    o pkg/seaice:
511      - allow values of SEAICE_elasticParm > 1
512      - add new parameter SEAICE_evpTauRelax as an alternative
513        to SEAICE_elasticParm
514      - make lsr boundary conditions free slip (by default), changes result
515      - add code for no slip boundary conditions for lsr
516      - set minimum of zeta to zero (and not 4e8) (changes results)
517      - add a cap on AREA after advecting AREA if seaice_growth is not called
518    o change calculation of Visbeck K:
519      - no longer depend on tapering scheme; instead, compute slope (limited
520        by GM_maxSlope). this is equivalent to what was comuted before with
521        clipping or linear tappering.
522      - fix vertical averaging (wrong by 1/2 level)
523      - leave the old version (but will not be maintained) within
524        #ifdef OLD_VISBECK_CALC / #endif
525      - update output of exp. ideal_2D_oce
526    o change error catch in calc_r_star to improve vectorization
527    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
528      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
529    o adjoint:
530      Re-organized adjoint checkpointing according to Matt Mazloff
531      (but with modifs/completions/cleanups)
532      Storing is now bundled into large arrays to optimized I/O
533      (and second step in cleanup of the_main_loop)
534    
535    checkpoint59b
536    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
537      - export/import (between ocean & coupler) fields needed for ocean DIC.
538    o pkg/seaice:
539      - get rid of three more exchanges seaice_calc_viscosities (required
540        different loop boundaries in seaice_lsr and seaice_ocean_stress)
541      - bug fix in seaice_ocean_stress (update of lab_sea required)
542      - reduce loop boundaries to necessary minimum also in seaice_evp
543      - go back to the old way of computing deltaC/Z as the adjoint likes that
544        better
545    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
546      passive tracer to an Age Tracer) + update output.txt
547    o pkg/exf:
548      - implement A-grid / C-grid selection for wind-stress input files.
549      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
550      for now, in exf_bulk_largeyeager04.F only :
551      - change implementation for case where windspeed + 2. components wind-stress
552        are read-in. AND use rhoConstFresh to convert evap.
553    o pkg/seaice:
554      - use correct EXCH_UV for wind-forcing (on A-grid).
555      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
556        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
557    o pkg/exf:
558      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
559      EXF_INTERPOLATION:
560      - merge global_with_exf/code version of exf_interp_read.F
561        to the main code ;
562      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
563        reading the file ; Important: This options needs to be defined to recover
564        previous code.
565        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
566      - no longer loose real*8 precision along the way when using exf_iprec=64.
567    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
568      - change discretisation of evp-solver in order to avoid another exchange
569        (changes lab_sea) and clean up a little
570      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
571        help the adjoint (this also changes the results slightly)
572      - add a few "_d 0" where they had been missing in seaice_evp.F
573      - cleaning up: remove unused seaice_calc_rhs.F
574    o pkg/exf: some cleaning-up:
575      - change various "constants" into runtime parameters
576      - cleaned-up Large&Yeager04 routine which should eventually
577        replace exf_bulkformulae.F (changed names of S/R and CPP)
578        and merged various ALLOW_ATM_WIND options
579     only used with thsice pkg (in thsice_get_exf.F):
580      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
581        which are used when useStabilityFct_overIce=TRUE (= the default)
582      - change default values of ice & snow emissivity and scale downward LW
583        by ice & snow emissivity.
584    o pkg/thsice:
585     fix few little problems, in thsice_calc_thickn.F:
586      - growth vertically (and not laterally) if iceFrac == iceMaskMax
587      - melt only laterally if hIce < hThinIce (as the comments say)
588      and in thsice_extend.F:
589      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
590      - start to form ice as soon as the minimum ice-volume is reachable.
591     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
592      and cpl_aim+ocn
593    o pkg/kpp
594     - move computation of surface related input fields to KPP into a new
595       subroutine kpp_forcing_surf.F
596     - remove wrong (within bi,bj loops) EXCH calls.
597     - little cleaning (add argument myThid in last position, cvs header ...)
598     - for now, fix conservation problem by exchanging KPPviscAz (may not
599       be the best fix)
600    o pkg/seaice
601     - check for inconsistent evp parameter/cpp-flag combination
602     - remove leftover errIO flat for obsolete name list error handling
603    o OpenAD
604     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
605    
606    checkpoint59a
607    o pkg/seaice: some parameter clarifications and a little bit of clean up
608    o pkg/thsice: rename run-time parameters:
609       himin       -> hIceMin
610       himin0      -> hThinIce
611       hihig       -> hThickIce
612       i0          -> i0swFrac
613       transCoef   -> bMeltCoef
614       frac_energy -> fracMelting
615      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
616       with default values (for now) that do not change the results.
617      remove old version of thsice vars advection in pkg/seaice.
618    o in FFIELDS.h:
619      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
620      - make pLoad & sIceLoad always available (but still only used if
621         ATMOSPHERIC_LOADING is #define).
622    o pkg/kpp: replaced _KPP_RL with _RL
623    o bug fixes for vertical diffusivity computations when both KPP and
624        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
625        are no longer updating the vertical diffusivity array
626        (passed as argument) but are (re-) setting those arrays.
627    o pkg/seaice: fix bug in evp solver, while doing that
628      - change (improve?) discretization of stress computations for both
629        cgrid-lsr and evp solver
630      - add a new routine to compute strain rates
631      - the above changes lab_sea results
632      - add no slip conditions for evp solver (off by default), lsr-version
633        may follow
634      - fix exchange for shear at Z-points (does not change lab_sea)
635      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
636        (to force the user to pick a time step since there is not "safe" way
637        of choosing it)
638      - add principal stress diagnostics
639      - rearrange fields for evp a little to avoid having to call a: too many
640        exchanges and b: exchanges for stress trensor components which we do
641        not have.
642      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
643        of evp, complete rewrite for lsr case (latter is does not yet work
644        in all cases)
645    o pkg/kpp: add code to have mixing in shelf ice caverns
646      - add myThid to all kpp routines (long overdue)
647    
648    checkpoint59
649    o pkg/exf:
650      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
651        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
652      - move exf header files from lower_case.h to UPPER_CASE.h ;
653        add missing cvs Header & Name
654      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
655      - add namelist param. selectStressGridPosition, exf_monFreq
656      - retire many _CLIM routines, and remove data.exf_clim
657        + params moved to data.exf
658        + climsst, climsss now handled by exf_set_gen, i.e.
659          climss?period=0 refers to constant field,
660          climss?period=-12 to monthly forcing
661      - split up namelists in data.exf
662    o pkg/seaice:
663      - remove seaice_exch and seaice_exch_uv
664      - remove superfluous exchange of theta
665      - add myThid to seaice_budget_ocean/ice
666      - add new interface for atmospheric wind forcing (C-grid only)
667        + new routine
668        + two new field (taux, tauy for stress over ice)
669        + removed one global field (DAIRN) for C-grid case only
670    o pkg/thsise
671      - 2nd set of modifs for thsice adjoint in conjunction with exf
672    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
673    
674    checkpoint58y_post
675    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
676      vertical diffusivity, similar to that in MOM4; turned on using
677      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
678      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
679    o Added capability for 3D specification of background vertical diffusion
680      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
681      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
682      "data" file that contains the 3D vertical diffusivity coefficients.
683    o ice dynamics (pkg/seaice) with thsice thermodynamics:
684      - add code within pkg thsice to advect & diffuse sea-ice fields
685      similar to (and will replace) what has been added in  seaice_advdiff.F,
686      but: - conserving Mass, Heat & Salt.
687           - better when using non-linear advection scheme (not yet fully tested)
688           - can also be used in atmospheric set-up (for now, only the diffusion).
689    
690    checkpoint58x_post
691    o IO option for global-file compact format:
692      - add options when generating topology (utils/exch2/matlab-topology-generator)
693      - add I/O capability (pkg/mdsio).
694      - adapt utils/matlab/rdmds.m to read this format.
695      for now long-line format not yet supported by pkg/mdsio (& exch2).
696    o shelfice: add a few diagnostics
697    
698    checkpoint58w_post
699    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
700      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
701      (and replace horiVertRatio in NH code).
702      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
703                         and tutorial_plume_on_slope (sensitive to truncation)
704    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
705      directly to drive seaice model (C-grid only)
706    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
707     - reintroduce computation of wind from stress,
708     - compute tau (in exf_bulkformulae.F) from windstress averaged to
709       mass points to avoid tau = 0
710     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
711    o rdmnc.m: make it work with "global" files created with gluemnc
712    o rdmnc.m : some improvements in dealing with singleton dimension
713      (tested on all testreport mnc output files).
714    o genmake2: disable pkg/profiles if netcdf test fails.
715    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
716    o move call to cal_readparms up to make calendar parameters/variable available
717      to all packages
718    
719    checkpoint58v_post
720    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
721      useDynP_inEos_Zc tested.
722    o pkg/exf: changes to properly interpolate/mask/scale initial fields
723    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
724      and portions thereof.  See read_cs.txt for description and examples.
725    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
726      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
727      following the great-circle arc between those 2 points.
728    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
729      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
730    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
731     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
732     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
733     - still needs work (not working with some options ; efficiency to improve)
734       and serious testing.
735     - use this scheme for temperature & salinity in 2 advection test exp.:
736       advect_xy & advect_xz, respectively.
737    
738  checkpoint58u_post  checkpoint58u_post
739  o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.  o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
740  o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.  o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.

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