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revision 1.824 by mlosch, Wed May 30 09:27:05 2007 UTC revision 1.923 by mlosch, Thu Dec 6 09:02:24 2007 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/seaice:
8      - add timescale for melting due to warm mixed layer as a means of
9        setting SEAICE_availHeatFrac more conveniently
10      - add a CPP-flag/runtime parameter check for flooding algorithm
11    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
12      unit changes
13    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
14    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
15      SX vector computer.
16    o pkg/seaice:
17      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
18        seaice forcing fields can now be read only through pkg/exf
19      - removed some unused halos
20    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
21    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
22      or U/VICE from U/VWIND before computing U/VSTRESS
23    
24    checkpoint59k
25    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
26      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
27    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
28      all experiments pass when compile with un-initilised var. checking option.
29    o added pkg/salt_plume
30    o script to test restart (for now, in MITgcm_contrib/jmc_script)
31    o pkg/seaice: new read/write pickup version.
32      read meta file and write only fields which are needed to restart.
33      ( same logic as main pickup file ; also using pickupStrictlyMatch )
34    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
35    o lab_sea.hb87: modify the domain & update output.hb87.txt :
36      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
37      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
38      process. Fixed here by closing the domain at the Northern boundary.
39    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
40    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
41      a set of consecutive levels in/from a 3-D array.
42    o pkg/ptracers:
43      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
44      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
45    
46    checkpoint59j
47    o in pkgs: dic, obcs, offline, rbcs:
48      standard way to compute coeff. for time interpolation between 2 time reccords
49      which retains full precision (& make results less dependent on compiler).
50      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
51    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
52      packages instead of reading ice cover and wind speed separately
53    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
54     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
55      to allow to compile customized code before the update)
56    o cleaning-up:
57      - fix CPP instruction syntax in pkg/obcs
58      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
59        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
60      - fix some threads issue in IO parts.
61    o pkg/dic:
62      - add tons of "_d 0" (--> much better testreports !)
63       and then update outputs of tutorial_global_oce_biogeo
64    o pkg/mom_fluxform:
65      add a special version of momentum advection intended to conserve momentum
66      next to a bathymetry step or a coastline edge. (default = off = #undef)
67    o new read/write pickup version:
68      - for now, only implemented for main (mdsio) pickup file.
69      - write out only what is needed to restart; merge pickup_nh , pickup_ph
70        and main pickup together.
71      - read meta file; read only what is needed to restart; stop if a field
72        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
73        if it make sense (even if the restart is not perfect).
74      - if no meta file, assume that pickup to read corresponds exactly to
75        a pickup that would currently be written.
76      - read pickup written in the old format (until checkpoint59i) if it
77        recognizes an old meta file (no field-list).
78      - add a meta file in exp. which starts from a pickup: 2 cases:
79        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
80         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
81        b) a meta file describing the content of the associated pickup file
82         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
83    o pkg/mdsio & pkg/rw:
84      - new routine to read a meta file ; new set of routine to read
85        Multiple-fields file (with meta file).
86    o added open boundary conditions capability for seaice
87        HSNOW, HSALT, UICE, and VICE
88    
89    checkpoint59i
90    o adjoint:
91      * fix multiDimAdvection adjoint
92        (partial recomputation problem by TAF for fVerT(:,:,kDown)
93        and comlev1 size definition (maxpass vs. max. number of tracers)
94      * verification/global_ocean.90x45x15 adjoint now tests
95        NLFS and multiDimAdvection using DST3 (=30)
96      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
97    o pkg/kpp: add "_d 0" to real constant (if missing);
98      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
99      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
100    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
101      for internal parameters related to restart process (formerly from PARAMS.h)
102      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
103    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
104      as argument. (only atm2d & obcs write_pickup have not yet been updated)
105    o pkg/monitor:
106      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
107      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
108      - account for deep Atmosphere factor and density factor (anelastic)
109    o added open boundary conditions capability for seaice HEFF and AREA
110    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
111      thermodynamics
112      - requires a little reorganization, which affects the testreport results
113        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
114        so that now the conservative form is tested
115      - add a few comments
116    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
117    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
118    o add new diagnostics to seaice: advective, diffusive fluxes (only for
119      multidim-advection, for scheme 2 they are not filled) and transports,
120      thermodynamic growth rates
121    o change units of EmPmR (inside the code, + within coupling interface)
122      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
123      Affects results @ truncation level (cg2d match) and update output of
124       experiments: lab_sea(6), global_ocean.90x40x15(10),
125      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
126      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
127      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
128      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
129    
130    checkpoint59h
131    o pkg/exf:
132      - improve vectorization by moving if-statement out of loops in
133        exf_mapfields, exf_radiation
134      - exf_bulkformulae.F: introduce 2D fields and vectorize code
135    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
136    o testreport:
137      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
138        monitor & update offline_exf_seaice exp. output.
139      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
140    o pkg/seaice:
141      - bug fix in the evp solver: boundary conditions were affected be
142        masking of zMax/zMin (changes results)
143      - minor bug fix in boundary conditions in seaice_calc_strainrates
144        (changes results for no_slip)
145      - seaice_lsr.F: make interpolation of eta dependent on boundaries
146      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
147      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
148        stress formulation and no-slip boundary conditions
149    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
150      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
151    o pkg/seaice: a first HSALT time stepping equation has been checked in
152    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
153      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
154      without requiring DO-IF statements
155    o pkg/thsice:
156      use continuous power-law function for partition of energy between lateral
157      melting/freezing and thinning/thickening ; old code using step function
158      still available with #undef THSICE_FRACEN_POWERLAW
159      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
160    o testreport: change AD testing : check against results/output_adm.txt
161      using same scripts as for forward test.
162    
163    checkpoint59g
164    o adjoint testing: in preparation for changing testreport:
165      - output format: cost and grad written on separated lines
166      - ad output results in directory "results" (instead of "results_ad")
167    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
168    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
169    o pkg/ecco: allow user defined cost function contributions
170    o testreport:
171      Allow to choose (per experiment) the list of tested output variables
172       and the main variable (used to issue a pass/FAIL ) ;
173      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
174      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
175      Also modify printing of summary:
176       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
177       b) echo the list of tested variables in the individual summary.txt of
178          each experiment.
179    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
180      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
181      (but still depend on the tile decompostion of the domain).
182    o pkg/seaice: change a discretization detail to make the B-grid code
183      "more symmetric". This change is likely to remove all "ridges/leads" that
184      where quasi-aligned with the grid in B-grid solutions. It may also be
185      the solution to the stress coupling issues with the B-grid.
186    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
187      remove .cvsignore from input dir. (since testreport no longer run here).
188    o pkg/thsice:
189     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
190     - fix reshaping of sea-ice just after advection:
191       melt all the ice only if ice-volume is too small.
192     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
193       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
194     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
195    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
196      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
197    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
198      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
199      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
200      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
201      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
202      -> update output.txt
203    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
204     this affects truncation error: -> update output.txt of exp:
205      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
206      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
207    
208    checkpoint59f
209    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
210    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
211      a bounded range (in forward mode)
212    o pkg/ecco, ctrl, autodiff and mom_common:
213     internal parameter controls, completements of implementations
214    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
215    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
216      (not seem any difference in testing results).
217    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
218       at face corners.
219    o pkg/generic_advdiff:
220     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
221      loop range indices for computing vertical advection tendency
222      and do the calculation in the interior only (no overlap) ;
223      for now, only implemented for SOM advection (to save CPU time).
224     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
225    o exch2 adjoint
226      First set of changes:
227      - add exch2 hand-written adjoint templates
228      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
229        This will require cleanup in pkg/autodiff/*.F
230        (changed routines currently kept separate in verif. code/)
231      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
232        that used to hide exch2 or cubed-sphere specific code
233        (commented via 'cph-exch2')
234    o pkg/seaice
235      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
236    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
237       output of global_ocean.cs32x15.thsice .
238    
239    checkpoint59e
240    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
241      for B-grid vector (not yet tested) and C-grid vector (<- only used
242      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
243    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
244      (#ifdef ALLOW_SALT_PLUME)
245    o gather_2d/scatter_2d: removed halo regions
246    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
247      scheme and the corresponding test case (under front_relax dir). For now,
248      only available with Skew-flux form and not yet tested in realistic set-up.
249      adjoint: store directives updated, but gradient checks deteriorated,
250      so maybe GM/Redi adjoint is now broken.
251    o seaice adjoint
252      * add AREA, HEFF, HSNOW as control variable
253        (should not change lab_sea results)
254      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
255    o pkg/seaice:
256      * added computation of saltFlux in seaice_growth;
257        For time being, sea ice salinity is assumed constant
258        contribution of snow flooding to freshening of sea ice is neglected.
259        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
260        defaults to 0.0 in order to maintain backward compatibility.
261        Typical values for SEAICE_salinity are 4 to 10 g/kg.
262      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
263      * added SEAICE_availHeatFrac, which specifies fraction of surface level
264        heat content used to melt or grow ice
265      * commented out cap of HICE: it helps keep ice thinner
266      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
267      * applied OBCS T/S mask to HEFFM sea ice mask
268    
269    checkpoint59d
270    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
271     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
272     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
273    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
274     and change default value of parameter "GM_Small_Number";
275     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
276       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
277       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
278    o pkg/ecco: cost function when applying pkg/smooth to controls
279    o pkg/ctrl: add forcingPrecond run time parameter
280    o pkg/seaice:
281     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
282     - fix bug in metric terms of u-equation in LSR solver (implicit part),
283       changes verification/lab_sea
284     - rearrange implicit part of u-equation in LSR solver to make it easier to
285       read, understand, and debug. This causes changes at the truncation level.
286     - fix (serious) bug in the boundary conditions (sign error in the implicit
287       part) of the LSR solver. Changes all LSR results.
288     - fixed problem with HSNOW initialization to avoid thick snow when AREA
289       is initilized with small values - does not change lab_sea results.
290     - added HsnowFile initialization capability
291    o pkg/smooth: addition to model/src and pkg/ctrl so allow
292     initialization of pkg/smooth and application to control vector
293    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
294    o dependencies: pkg/profiles requires pkg/cal
295    o pkg/profiles:
296     - added option ALLOW_PROFILES_GENERICGRID
297         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
298         that interpolation information (grid points and coefficients) is provided
299         within the netcdf input files.
300         -> sample matlab scripts can be found in MITgcm_contrib/gael
301         that allow you to prepare netcdf input files.
302     - also modified: cleaner include statements, cleaner error print statements,
303       cleaner stops when error, and more tests of the netcdf input files consistency.
304    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
305    o pkg/seaice:
306     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
307       requires a new routine: seaice_diagnostics_fill.F
308     - make sure that seaice does not move if not forced (pressure replacement
309       method, Hibler and Ip, 1995), changes results
310     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
311     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
312       It is turned off by default (=-1.), because it changes the results.
313     - make it possible to read AREA from a file, too.
314    
315    checkpoint59c
316    o add S/R and diagnostics for oceanic mixed-layer depth
317    o move GMRedi call after all vertical mixing schemes (including KPP)
318    o pkg/thsice:
319     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
320      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
321  o pkg/obcs:  o pkg/obcs:
322   - bug fix for balance code   - bug fix for balance code
323  o pkg/seaice:  o pkg/seaice:
324    - allow values of SEAICE_elaticParm > 1    - allow values of SEAICE_elasticParm > 1
325    - make lsr boundary conditions free slip (by default)    - add new parameter SEAICE_evpTauRelax as an alternative
326        to SEAICE_elasticParm
327      - make lsr boundary conditions free slip (by default), changes result
328    - add code for no slip boundary conditions for lsr    - add code for no slip boundary conditions for lsr
329    - set minimum of zeta to zero (and not 4e8) (changes results)    - set minimum of zeta to zero (and not 4e8) (changes results)
330      - add a cap on AREA after advecting AREA if seaice_growth is not called
331  o change calculation of Visbeck K:  o change calculation of Visbeck K:
332    - no longer depend on tapering scheme; instead, compute slope (limited    - no longer depend on tapering scheme; instead, compute slope (limited
333      by GM_maxSlope). this is equivalent to what was comuted before with      by GM_maxSlope). this is equivalent to what was comuted before with
334      clipping or linear tappering.      clipping or linear tappering.
335    - fix vertical averaging (wrong by 1 level)    - fix vertical averaging (wrong by 1/2 level)
336    - leave the old version (but will not be maintained) within    - leave the old version (but will not be maintained) within
337      #ifdef OLD_VISBECK_CALC / #endif      #ifdef OLD_VISBECK_CALC / #endif
338      - update output of exp. ideal_2D_oce
339  o change error catch in calc_r_star to improve vectorization  o change error catch in calc_r_star to improve vectorization
340  o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and  o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
341    add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).    add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
342    o adjoint:
343      Re-organized adjoint checkpointing according to Matt Mazloff
344      (but with modifs/completions/cleanups)
345      Storing is now bundled into large arrays to optimized I/O
346      (and second step in cleanup of the_main_loop)
347    
348  checkpoint59b  checkpoint59b
349  o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):  o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
# Line 74  o pkg/exf: some cleaning-up: Line 397  o pkg/exf: some cleaning-up:
397  o pkg/thsice:  o pkg/thsice:
398   fix few little problems, in thsice_calc_thickn.F:   fix few little problems, in thsice_calc_thickn.F:
399    - growth vertically (and not laterally) if iceFrac == iceMaskMax    - growth vertically (and not laterally) if iceFrac == iceMaskMax
400    - melt laterally only if hIce < hThinIce (as the comments say)    - melt only laterally if hIce < hThinIce (as the comments say)
401    and in thsice_extend.F:    and in thsice_extend.F:
402    - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)    - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
403    - start to form ice as soon as the minimum ice-volume is reachable.    - start to form ice as soon as the minimum ice-volume is reachable.
# Line 111  o in FFIELDS.h: Line 434  o in FFIELDS.h:
434       ATMOSPHERIC_LOADING is #define).       ATMOSPHERIC_LOADING is #define).
435  o pkg/kpp: replaced _KPP_RL with _RL  o pkg/kpp: replaced _KPP_RL with _RL
436  o bug fixes for vertical diffusivity computations when both KPP and  o bug fixes for vertical diffusivity computations when both KPP and
437      3D diffusivity arrays are used.      3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
438        are no longer updating the vertical diffusivity array
439        (passed as argument) but are (re-) setting those arrays.
440  o pkg/seaice: fix bug in evp solver, while doing that  o pkg/seaice: fix bug in evp solver, while doing that
441    - change (improve?) discretization of stress computations for both    - change (improve?) discretization of stress computations for both
442      cgrid-lsr and evp solver      cgrid-lsr and evp solver

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