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revision 1.763 by mlosch, Tue Jan 9 13:36:19 2007 UTC revision 1.974 by dfer, Fri Apr 11 21:48:34 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 thsice pkg:
8      - Now hsMax limits snow heitght by turning it into ice following
9        flooding scheme (and now conserving energy)
10      - Slight rewriting of the formula in thsice_calc_thick.F
11      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
12        --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
13    
14    checkpoint59p
15    o gchem / dic / cfc :
16      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
17      - add new parameter files: "data.dic" & "data.cfc" ;
18      - various re-arrangement in initialisation & header file ;
19      - fix tutorial_global_oce_biogeo for multi-threaded test.
20    o pkg/dic: test for "pickup_dic" file when restarting ;
21      if no pickup-file, can restart with a re-initialised pH (same as it did
22      before) providing pickupStrictlyMatch is set to False.
23    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
24      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
25    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
26      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
27    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
28     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
29       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
30    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
31       scheme to use for vorticty-term ;
32     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
33       (with default selectVortScheme, return to original discretisation)
34     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
35    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
36    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
37      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
38      also fix diagnostics VISCAHW & VISCA4W.
39    
40    checkpoint59o
41    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
42    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
43      move a few statemens out the main loop into separate loops
44    o pkg/shelfice:
45      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
46        (kg/m^2/s), does not break tests, because in verification/isomip,
47        rhoConstFresh=rhoConst (by accident)
48      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
49      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
50        new file model/src/seawater.F, so that they are available for all pkgs.
51      - convert potential temperature into in-situ temperature. This changes the
52        isomip tests => update tests
53    o add a flag writePickupAtEnd (default=true) to be able to suppress
54      writing a pickup at the last timestep
55    o tools/mpack-1.6 :
56      - disable automake (not working) and autoconf (not needed).
57      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
58        also cleaner with much less compilation warnings.
59    o pkg/profiles:
60      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
61      (for "less than 32 characters name" compiler requirement)
62    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
63      conditions that have a different sampling frequency than S/T/U/V obcs
64    o pkg/diagnostics (stats-diags):
65      - fix global Min/Max in case 1 processor get only empty tiles
66    o genmake2: replace (4 times)
67         make genmake_tc_1.o >> genmake_warnings 2>&1
68      with
69         COMM="$CC $CFLAGS -c genmake_tc_1.c"
70         echo $COMM >> genmake_warnings
71         $COMM >> genmake_warnings 2>&1
72      to make genmake2 always see the value of CC as specified in the optfile.
73    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
74      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
75      - modify verification advect_cs test to test SOM-advection on CS-grid.
76    o pkg/ctrl:
77      - Rewrite of ctrl_map_ini_ecco.F,
78        introducing a generic routine (ctrl_map_ini_gen.F).
79      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
80    
81    checkpoint59n
82    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
83      number in dedicate array "hdiag":
84      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
85        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
86      - many small changes (integer format) for large number of diagnostics
87      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
88        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
89    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
90      usingSphericalGrid, this allows to define the rotated grid coordinates
91      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
92      geographical coordinates according to the inverse of the rotation defined
93      by the Euler angles, so that Coriolis parameter and online-interpolation by
94      exf works with the geographical coordinates on XC/YC/XG/YG.
95      Naturally, this feature does not work with all packages, so some
96      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
97      profiles), because there the coordinates are assumed to be regular
98      spherical grid coordinates.
99    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
100      - introduce isopycnal diffusion coefficient control.
101    o tools/adjoint_options:
102      - additional control vector components.
103    o pkg/mnc: have mnc create marginally meaning full coordinate variables
104      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
105    o pkg/mypackage:
106      - add example of read/write pickup for state-var ;
107      - add entry points to the main code for state-vars diags & write-pickup.
108    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
109      transitions for useExfYearlyFields
110      - add new subroutine that determines the file to read from for
111        use*YearlyFields = .TRUE. and .FALSE.
112      - add a verification experiment to global_with_exf that tests
113        useExfYearlyFields with USE_EXF_INTERPOLATION defined
114    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
115      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
116      subroutines (which could be generated from a template, because they are
117      almost identical), for now they are included in obcs_prescribe_read.F for
118      simplicity
119    o pkg/exf:
120      - add a little more diagnostic to exf_interp_read (in analogy to
121        mds_read_field, can be turned off with debugLevel < debugLevA=1)
122      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
123        ugly but fast by unrolling short inner loops, inserting a unroll=8
124        directive in routine lagran, and splitting a loop and making do while the
125        outermost loop (the latter requires the intoduction of index arrays)
126    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
127    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
128      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
129    o verification/seaice_obcs: updated for restart test and latest options
130    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
131      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
132      for now this is only available for the C-grid code and also within
133      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
134    
135    checkpoint59m
136    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
137      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
138    o gad_som : fix flux output (& diagnostics) to have same units as other  
139      advection scheme fluxes (was previously multiplied by deltaT).  
140    o added verification/seaice_obcs both to test seaice open boundaries
141      and to provide an example matlab scrpt for generating them
142    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
143    o pkg/salt_plume: clean up salt_plume_frac.F to
144      remove redundancy in PlumeMethod 1 and 4
145    o pkg/kpp: added saltplume diagnostics
146    o pkg/obcs and pkg/seaice:
147      - do not set uice and vice to zero when OB*icefile are unspecified
148      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
149      - moved seaice tracer obcs after call to seaice_growth
150    o pkg/salt_plume: added various options for salt plume depth
151      criterion and for vertical distribution of the salt
152    
153    checkpoint59l
154    o pkg/ptracers: new version of ptracers pickup:
155      read meta file and write only fields which are needed to restart.
156      ( same logic as main pickup file ; also using pickupStrictlyMatch )
157    o pkg/seaice:
158      - add timescale for melting due to warm mixed layer as a means of
159        setting SEAICE_availHeatFrac more conveniently
160      - add a CPP-flag/runtime parameter check for flooding algorithm
161      - reformulated availHeat in seaice_growth.F to be independent of AREA
162    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
163      unit changes
164    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
165    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
166      SX vector computer.
167    o pkg/seaice:
168      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
169        seaice forcing fields can now be read only through pkg/exf
170      - removed some unused halos
171    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
172    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
173      or U/VICE from U/VWIND before computing U/VSTRESS
174    
175    checkpoint59k
176    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
177      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
178    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
179      all experiments pass when compile with un-initialised var. checking option.
180    o added pkg/salt_plume
181    o script to test restart (for now, in MITgcm_contrib/jmc_script)
182    o pkg/seaice: new read/write pickup version.
183      read meta file and write only fields which are needed to restart.
184      ( same logic as main pickup file ; also using pickupStrictlyMatch )
185    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
186    o lab_sea.hb87: modify the domain & update output.hb87.txt :
187      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
188      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
189      process. Fixed here by closing the domain at the Northern boundary.
190    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
191    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
192      a set of consecutive levels in/from a 3-D array.
193    o pkg/ptracers:
194      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
195      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
196    
197    checkpoint59j
198    o in pkgs: dic, obcs, offline, rbcs:
199      standard way to compute coeff. for time interpolation between 2 time reccords
200      which retains full precision (& make results less dependent on compiler).
201      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
202    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
203      packages instead of reading ice cover and wind speed separately
204    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
205     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
206      to allow to compile customized code before the update)
207    o cleaning-up:
208      - fix CPP instruction syntax in pkg/obcs
209      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
210        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
211      - fix some threads issue in IO parts.
212    o pkg/dic:
213      - add tons of "_d 0" (--> much better testreports !)
214       and then update outputs of tutorial_global_oce_biogeo
215    o pkg/mom_fluxform:
216      add a special version of momentum advection intended to conserve momentum
217      next to a bathymetry step or a coastline edge. (default = off = #undef)
218    o new read/write pickup version:
219      - for now, only implemented for main (mdsio) pickup file.
220      - write out only what is needed to restart; merge pickup_nh , pickup_ph
221        and main pickup together.
222      - read meta file; read only what is needed to restart; stop if a field
223        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
224        if it make sense (even if the restart is not perfect).
225      - if no meta file, assume that pickup to read corresponds exactly to
226        a pickup that would currently be written.
227      - read pickup written in the old format (until checkpoint59i) if it
228        recognizes an old meta file (no field-list).
229      - add a meta file in exp. which starts from a pickup: 2 cases:
230        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
231         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
232        b) a meta file describing the content of the associated pickup file
233         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
234    o pkg/mdsio & pkg/rw:
235      - new routine to read a meta file ; new set of routine to read
236        Multiple-fields file (with meta file).
237    o added open boundary conditions capability for seaice
238        HSNOW, HSALT, UICE, and VICE
239    
240    checkpoint59i
241    o adjoint:
242      * fix multiDimAdvection adjoint
243        (partial recomputation problem by TAF for fVerT(:,:,kDown)
244        and comlev1 size definition (maxpass vs. max. number of tracers)
245      * verification/global_ocean.90x45x15 adjoint now tests
246        NLFS and multiDimAdvection using DST3 (=30)
247      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
248    o pkg/kpp: add "_d 0" to real constant (if missing);
249      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
250      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
251    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
252      for internal parameters related to restart process (formerly from PARAMS.h)
253      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
254    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
255      as argument. (only atm2d & obcs write_pickup have not yet been updated)
256    o pkg/monitor:
257      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
258      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
259      - account for deep Atmosphere factor and density factor (anelastic)
260    o added open boundary conditions capability for seaice HEFF and AREA
261    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
262      thermodynamics
263      - requires a little reorganization, which affects the testreport results
264        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
265        so that now the conservative form is tested
266      - add a few comments
267    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
268    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
269    o add new diagnostics to seaice: advective, diffusive fluxes (only for
270      multidim-advection, for scheme 2 they are not filled) and transports,
271      thermodynamic growth rates
272    o change units of EmPmR (inside the code, + within coupling interface)
273      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
274      Affects results @ truncation level (cg2d match) and update output of
275       experiments: lab_sea(6), global_ocean.90x40x15(10),
276      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
277      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
278      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
279      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
280    
281    checkpoint59h
282    o pkg/exf:
283      - improve vectorization by moving if-statement out of loops in
284        exf_mapfields, exf_radiation
285      - exf_bulkformulae.F: introduce 2D fields and vectorize code
286    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
287    o testreport:
288      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
289        monitor & update offline_exf_seaice exp. output.
290      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
291    o pkg/seaice:
292      - bug fix in the evp solver: boundary conditions were affected be
293        masking of zMax/zMin (changes results)
294      - minor bug fix in boundary conditions in seaice_calc_strainrates
295        (changes results for no_slip)
296      - seaice_lsr.F: make interpolation of eta dependent on boundaries
297      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
298      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
299        stress formulation and no-slip boundary conditions
300    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
301      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
302    o pkg/seaice: a first HSALT time stepping equation has been checked in
303    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
304      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
305      without requiring DO-IF statements
306    o pkg/thsice:
307      use continuous power-law function for partition of energy between lateral
308      melting/freezing and thinning/thickening ; old code using step function
309      still available with #undef THSICE_FRACEN_POWERLAW
310      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
311    o testreport: change AD testing : check against results/output_adm.txt
312      using same scripts as for forward test.
313    
314    checkpoint59g
315    o adjoint testing: in preparation for changing testreport:
316      - output format: cost and grad written on separated lines
317      - ad output results in directory "results" (instead of "results_ad")
318    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
319    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
320    o pkg/ecco: allow user defined cost function contributions
321    o testreport:
322      Allow to choose (per experiment) the list of tested output variables
323       and the main variable (used to issue a pass/FAIL ) ;
324      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
325      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
326      Also modify printing of summary:
327       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
328       b) echo the list of tested variables in the individual summary.txt of
329          each experiment.
330    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
331      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
332      (but still depend on the tile decompostion of the domain).
333    o pkg/seaice: change a discretization detail to make the B-grid code
334      "more symmetric". This change is likely to remove all "ridges/leads" that
335      where quasi-aligned with the grid in B-grid solutions. It may also be
336      the solution to the stress coupling issues with the B-grid.
337    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
338      remove .cvsignore from input dir. (since testreport no longer run here).
339    o pkg/thsice:
340     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
341     - fix reshaping of sea-ice just after advection:
342       melt all the ice only if ice-volume is too small.
343     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
344       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
345     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
346    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
347      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
348    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
349      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
350      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
351      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
352      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
353      -> update output.txt
354    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
355     this affects truncation error: -> update output.txt of exp:
356      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
357      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
358    
359    checkpoint59f
360    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
361    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
362      a bounded range (in forward mode)
363    o pkg/ecco, ctrl, autodiff and mom_common:
364     internal parameter controls, completements of implementations
365    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
366    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
367      (not seem any difference in testing results).
368    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
369       at face corners.
370    o pkg/generic_advdiff:
371     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
372      loop range indices for computing vertical advection tendency
373      and do the calculation in the interior only (no overlap) ;
374      for now, only implemented for SOM advection (to save CPU time).
375     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
376    o exch2 adjoint
377      First set of changes:
378      - add exch2 hand-written adjoint templates
379      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
380        This will require cleanup in pkg/autodiff/*.F
381        (changed routines currently kept separate in verif. code/)
382      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
383        that used to hide exch2 or cubed-sphere specific code
384        (commented via 'cph-exch2')
385    o pkg/seaice
386      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
387    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
388       output of global_ocean.cs32x15.thsice .
389    
390    checkpoint59e
391    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
392      for B-grid vector (not yet tested) and C-grid vector (<- only used
393      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
394    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
395      (#ifdef ALLOW_SALT_PLUME)
396    o gather_2d/scatter_2d: removed halo regions
397    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
398      scheme and the corresponding test case (under front_relax dir). For now,
399      only available with Skew-flux form and not yet tested in realistic set-up.
400      adjoint: store directives updated, but gradient checks deteriorated,
401      so maybe GM/Redi adjoint is now broken.
402    o seaice adjoint
403      * add AREA, HEFF, HSNOW as control variable
404        (should not change lab_sea results)
405      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
406    o pkg/seaice:
407      * added computation of saltFlux in seaice_growth;
408        For time being, sea ice salinity is assumed constant
409        contribution of snow flooding to freshening of sea ice is neglected.
410        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
411        defaults to 0.0 in order to maintain backward compatibility.
412        Typical values for SEAICE_salinity are 4 to 10 g/kg.
413      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
414      * added SEAICE_availHeatFrac, which specifies fraction of surface level
415        heat content used to melt or grow ice
416      * commented out cap of HICE: it helps keep ice thinner
417      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
418      * applied OBCS T/S mask to HEFFM sea ice mask
419    
420    checkpoint59d
421    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
422     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
423     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
424    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
425     and change default value of parameter "GM_Small_Number";
426     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
427       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
428       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
429    o pkg/ecco: cost function when applying pkg/smooth to controls
430    o pkg/ctrl: add forcingPrecond run time parameter
431    o pkg/seaice:
432     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
433     - fix bug in metric terms of u-equation in LSR solver (implicit part),
434       changes verification/lab_sea
435     - rearrange implicit part of u-equation in LSR solver to make it easier to
436       read, understand, and debug. This causes changes at the truncation level.
437     - fix (serious) bug in the boundary conditions (sign error in the implicit
438       part) of the LSR solver. Changes all LSR results.
439     - fixed problem with HSNOW initialization to avoid thick snow when AREA
440       is initilized with small values - does not change lab_sea results.
441     - added HsnowFile initialization capability
442    o pkg/smooth: addition to model/src and pkg/ctrl so allow
443     initialization of pkg/smooth and application to control vector
444    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
445    o dependencies: pkg/profiles requires pkg/cal
446    o pkg/profiles:
447     - added option ALLOW_PROFILES_GENERICGRID
448         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
449         that interpolation information (grid points and coefficients) is provided
450         within the netcdf input files.
451         -> sample matlab scripts can be found in MITgcm_contrib/gael
452         that allow you to prepare netcdf input files.
453     - also modified: cleaner include statements, cleaner error print statements,
454       cleaner stops when error, and more tests of the netcdf input files consistency.
455    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
456    o pkg/seaice:
457     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
458       requires a new routine: seaice_diagnostics_fill.F
459     - make sure that seaice does not move if not forced (pressure replacement
460       method, Hibler and Ip, 1995), changes results
461     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
462     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
463       It is turned off by default (=-1.), because it changes the results.
464     - make it possible to read AREA from a file, too.
465    
466    checkpoint59c
467    o add S/R and diagnostics for oceanic mixed-layer depth
468    o move GMRedi call after all vertical mixing schemes (including KPP)
469    o pkg/thsice:
470     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
471      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
472    o pkg/obcs:
473     - bug fix for balance code
474    o pkg/seaice:
475      - allow values of SEAICE_elasticParm > 1
476      - add new parameter SEAICE_evpTauRelax as an alternative
477        to SEAICE_elasticParm
478      - make lsr boundary conditions free slip (by default), changes result
479      - add code for no slip boundary conditions for lsr
480      - set minimum of zeta to zero (and not 4e8) (changes results)
481      - add a cap on AREA after advecting AREA if seaice_growth is not called
482    o change calculation of Visbeck K:
483      - no longer depend on tapering scheme; instead, compute slope (limited
484        by GM_maxSlope). this is equivalent to what was comuted before with
485        clipping or linear tappering.
486      - fix vertical averaging (wrong by 1/2 level)
487      - leave the old version (but will not be maintained) within
488        #ifdef OLD_VISBECK_CALC / #endif
489      - update output of exp. ideal_2D_oce
490    o change error catch in calc_r_star to improve vectorization
491    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
492      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
493    o adjoint:
494      Re-organized adjoint checkpointing according to Matt Mazloff
495      (but with modifs/completions/cleanups)
496      Storing is now bundled into large arrays to optimized I/O
497      (and second step in cleanup of the_main_loop)
498    
499    checkpoint59b
500    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
501      - export/import (between ocean & coupler) fields needed for ocean DIC.
502    o pkg/seaice:
503      - get rid of three more exchanges seaice_calc_viscosities (required
504        different loop boundaries in seaice_lsr and seaice_ocean_stress)
505      - bug fix in seaice_ocean_stress (update of lab_sea required)
506      - reduce loop boundaries to necessary minimum also in seaice_evp
507      - go back to the old way of computing deltaC/Z as the adjoint likes that
508        better
509    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
510      passive tracer to an Age Tracer) + update output.txt
511    o pkg/exf:
512      - implement A-grid / C-grid selection for wind-stress input files.
513      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
514      for now, in exf_bulk_largeyeager04.F only :
515      - change implementation for case where windspeed + 2. components wind-stress
516        are read-in. AND use rhoConstFresh to convert evap.
517    o pkg/seaice:
518      - use correct EXCH_UV for wind-forcing (on A-grid).
519      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
520        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
521    o pkg/exf:
522      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
523      EXF_INTERPOLATION:
524      - merge global_with_exf/code version of exf_interp_read.F
525        to the main code ;
526      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
527        reading the file ; Important: This options needs to be defined to recover
528        previous code.
529        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
530      - no longer loose real*8 precision along the way when using exf_iprec=64.
531    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
532      - change discretisation of evp-solver in order to avoid another exchange
533        (changes lab_sea) and clean up a little
534      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
535        help the adjoint (this also changes the results slightly)
536      - add a few "_d 0" where they had been missing in seaice_evp.F
537      - cleaning up: remove unused seaice_calc_rhs.F
538    o pkg/exf: some cleaning-up:
539      - change various "constants" into runtime parameters
540      - cleaned-up Large&Yeager04 routine which should eventually
541        replace exf_bulkformulae.F (changed names of S/R and CPP)
542        and merged various ALLOW_ATM_WIND options
543     only used with thsice pkg (in thsice_get_exf.F):
544      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
545        which are used when useStabilityFct_overIce=TRUE (= the default)
546      - change default values of ice & snow emissivity and scale downward LW
547        by ice & snow emissivity.
548    o pkg/thsice:
549     fix few little problems, in thsice_calc_thickn.F:
550      - growth vertically (and not laterally) if iceFrac == iceMaskMax
551      - melt only laterally if hIce < hThinIce (as the comments say)
552      and in thsice_extend.F:
553      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
554      - start to form ice as soon as the minimum ice-volume is reachable.
555     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
556      and cpl_aim+ocn
557    o pkg/kpp
558     - move computation of surface related input fields to KPP into a new
559       subroutine kpp_forcing_surf.F
560     - remove wrong (within bi,bj loops) EXCH calls.
561     - little cleaning (add argument myThid in last position, cvs header ...)
562     - for now, fix conservation problem by exchanging KPPviscAz (may not
563       be the best fix)
564    o pkg/seaice
565     - check for inconsistent evp parameter/cpp-flag combination
566     - remove leftover errIO flat for obsolete name list error handling
567    o OpenAD
568     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
569    
570    checkpoint59a
571    o pkg/seaice: some parameter clarifications and a little bit of clean up
572    o pkg/thsice: rename run-time parameters:
573       himin       -> hIceMin
574       himin0      -> hThinIce
575       hihig       -> hThickIce
576       i0          -> i0swFrac
577       transCoef   -> bMeltCoef
578       frac_energy -> fracMelting
579      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
580       with default values (for now) that do not change the results.
581      remove old version of thsice vars advection in pkg/seaice.
582    o in FFIELDS.h:
583      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
584      - make pLoad & sIceLoad always available (but still only used if
585         ATMOSPHERIC_LOADING is #define).
586    o pkg/kpp: replaced _KPP_RL with _RL
587    o bug fixes for vertical diffusivity computations when both KPP and
588        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
589        are no longer updating the vertical diffusivity array
590        (passed as argument) but are (re-) setting those arrays.
591    o pkg/seaice: fix bug in evp solver, while doing that
592      - change (improve?) discretization of stress computations for both
593        cgrid-lsr and evp solver
594      - add a new routine to compute strain rates
595      - the above changes lab_sea results
596      - add no slip conditions for evp solver (off by default), lsr-version
597        may follow
598      - fix exchange for shear at Z-points (does not change lab_sea)
599      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
600        (to force the user to pick a time step since there is not "safe" way
601        of choosing it)
602      - add principal stress diagnostics
603      - rearrange fields for evp a little to avoid having to call a: too many
604        exchanges and b: exchanges for stress trensor components which we do
605        not have.
606      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
607        of evp, complete rewrite for lsr case (latter is does not yet work
608        in all cases)
609    o pkg/kpp: add code to have mixing in shelf ice caverns
610      - add myThid to all kpp routines (long overdue)
611    
612    checkpoint59
613    o pkg/exf:
614      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
615        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
616      - move exf header files from lower_case.h to UPPER_CASE.h ;
617        add missing cvs Header & Name
618      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
619      - add namelist param. selectStressGridPosition, exf_monFreq
620      - retire many _CLIM routines, and remove data.exf_clim
621        + params moved to data.exf
622        + climsst, climsss now handled by exf_set_gen, i.e.
623          climss?period=0 refers to constant field,
624          climss?period=-12 to monthly forcing
625      - split up namelists in data.exf
626    o pkg/seaice:
627      - remove seaice_exch and seaice_exch_uv
628      - remove superfluous exchange of theta
629      - add myThid to seaice_budget_ocean/ice
630      - add new interface for atmospheric wind forcing (C-grid only)
631        + new routine
632        + two new field (taux, tauy for stress over ice)
633        + removed one global field (DAIRN) for C-grid case only
634    o pkg/thsise
635      - 2nd set of modifs for thsice adjoint in conjunction with exf
636    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
637    
638    checkpoint58y_post
639    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
640      vertical diffusivity, similar to that in MOM4; turned on using
641      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
642      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
643    o Added capability for 3D specification of background vertical diffusion
644      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
645      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
646      "data" file that contains the 3D vertical diffusivity coefficients.
647    o ice dynamics (pkg/seaice) with thsice thermodynamics:
648      - add code within pkg thsice to advect & diffuse sea-ice fields
649      similar to (and will replace) what has been added in  seaice_advdiff.F,
650      but: - conserving Mass, Heat & Salt.
651           - better when using non-linear advection scheme (not yet fully tested)
652           - can also be used in atmospheric set-up (for now, only the diffusion).
653    
654    checkpoint58x_post
655    o IO option for global-file compact format:
656      - add options when generating topology (utils/exch2/matlab-topology-generator)
657      - add I/O capability (pkg/mdsio).
658      - adapt utils/matlab/rdmds.m to read this format.
659      for now long-line format not yet supported by pkg/mdsio (& exch2).
660    o shelfice: add a few diagnostics
661    
662    checkpoint58w_post
663    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
664      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
665      (and replace horiVertRatio in NH code).
666      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
667                         and tutorial_plume_on_slope (sensitive to truncation)
668    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
669      directly to drive seaice model (C-grid only)
670    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
671     - reintroduce computation of wind from stress,
672     - compute tau (in exf_bulkformulae.F) from windstress averaged to
673       mass points to avoid tau = 0
674     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
675    o rdmnc.m: make it work with "global" files created with gluemnc
676    o rdmnc.m : some improvements in dealing with singleton dimension
677      (tested on all testreport mnc output files).
678    o genmake2: disable pkg/profiles if netcdf test fails.
679    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
680    o move call to cal_readparms up to make calendar parameters/variable available
681      to all packages
682    
683    checkpoint58v_post
684    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
685      useDynP_inEos_Zc tested.
686    o pkg/exf: changes to properly interpolate/mask/scale initial fields
687    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
688      and portions thereof.  See read_cs.txt for description and examples.
689    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
690      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
691      following the great-circle arc between those 2 points.
692    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
693      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
694    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
695     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
696     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
697     - still needs work (not working with some options ; efficiency to improve)
698       and serious testing.
699     - use this scheme for temperature & salinity in 2 advection test exp.:
700       advect_xy & advect_xz, respectively.
701    
702    checkpoint58u_post
703    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
704    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
705    o testreport: add option "-skipdir" to skip some test.
706    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
707      momentum calculation.
708    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
709    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
710      remove checkpoint.F and the_correction_step.F (no longer used);
711      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
712    o add option (linFSConserveTr) to correct for tracer source/sink due to
713      Linear Free surface
714  o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine  o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
715  o pkg/thsice: fix reading mnc-pickups  o pkg/thsice: fix reading mnc-pickups
716    

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