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revision 1.777 by jmc, Tue Mar 13 22:02:39 2007 UTC revision 1.994 by mlosch, Thu May 22 12:22:13 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/diagnostics: enforce missing_value attribute for scalar variables at
8      mass points, when using mnc for output
9      - add runtime parameter (missing_value, missing_value_int) to override
10        default (which is the value of getcon('UNDEF'))
11    o pkg/mnc: prepare mnc for the actual use of missing values with the
12      diagnostics package: small fix in mnc_cw_readwrite.template and more
13      initialisation of never used fields
14      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
15      versions
16    o pkg/thsice/thsice_ini_vars.F added default initial values so that
17      thermodynamics sea ice solver does not blow up when some initial fields
18      are missing.
19    o move from external_forcing_surf.F to ini_forcing.F
20      the p-coord. hack consisting in using pLoad to set phi0surf ;
21      update output of tutorial_global_oce_in_p (affected @ truncation level).
22    o Freshen up a bit hs94.1x64x5, notably:
23      remove rotationPeriod and tRef=5*0. (adjoint only), and add
24      exactConserv=.TRUE.
25    o pkg/generic_advdiff:
26      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
27      applies to files where Temperature & Salinity 2nd Order moments are used.
28    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
29      this uses a dynamically allocated internal state data structure
30      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
31      and requires a fortran 90 compiler
32    
33    checkpoint59q
34    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
35       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
36    o Refresh tutorial_global_oce_biogeo, notably:
37      - change bathymetry (put back seamounts in ACC, use hFacs)
38      - change EOS (POLY3 --> JMD95Z)
39      - use Bryan-Lewis vertical diffusivity
40      - use multidimensional advection
41      - remove old virtual virtual in dic pkg, now done through ptracer pkg
42      - change a couple of parameters in dic pkg
43    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
44    o pkg/obcs: change default to OBCSfixTopo = .true.,
45      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
46      - replace "debugMode" with "debugLevel .GE. debLevB"
47    o implementation of TAF directives for gchem,cfc,dic
48    o remove "exp5" (replaced by tutorial_deep_convection).
49    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
50      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
51      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
52      --> changes results in exp4, seaice_obcs
53    o tutorial_deep_convection :
54      update the set-up and increase resolution and domain size ; start
55      from pseudo initial conditions = output at t=120mn in order to see
56      something happening when running testreport.
57    o pkg/seaice: add os7mp as an advection scheme
58                  add check for advection schemes
59                  add a flag for restoring T and S underneath sea ice
60    o pkg/my82: add netcdf-support and diagnostics
61    o thsice pkg:
62      - Now hsMax limits snow height by turning it into ice following
63        flooding scheme (and now conserving energy)
64      - Slight rewriting of the formula in thsice_calc_thick.F
65      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
66      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
67    
68    checkpoint59p
69    o gchem / dic / cfc :
70      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
71      - add new parameter files: "data.dic" & "data.cfc" ;
72      - various re-arrangement in initialisation & header file ;
73      - fix tutorial_global_oce_biogeo for multi-threaded test.
74    o pkg/dic: test for "pickup_dic" file when restarting ;
75      if no pickup-file, can restart with a re-initialised pH (same as it did
76      before) providing pickupStrictlyMatch is set to False.
77    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
78      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
79    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
80      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
81    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
82     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
83       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
84    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
85       scheme to use for vorticty-term ;
86     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
87       (with default selectVortScheme, return to original discretisation)
88     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
89    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
90    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
91      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
92      also fix diagnostics VISCAHW & VISCA4W.
93    
94    checkpoint59o
95    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
96    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
97      move a few statemens out the main loop into separate loops
98    o pkg/shelfice:
99      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
100        (kg/m^2/s), does not break tests, because in verification/isomip,
101        rhoConstFresh=rhoConst (by accident)
102      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
103      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
104        new file model/src/seawater.F, so that they are available for all pkgs.
105      - convert potential temperature into in-situ temperature. This changes the
106        isomip tests => update tests
107    o add a flag writePickupAtEnd (default=true) to be able to suppress
108      writing a pickup at the last timestep
109    o tools/mpack-1.6 :
110      - disable automake (not working) and autoconf (not needed).
111      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
112        also cleaner with much less compilation warnings.
113    o pkg/profiles:
114      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
115      (for "less than 32 characters name" compiler requirement)
116    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
117      conditions that have a different sampling frequency than S/T/U/V obcs
118    o pkg/diagnostics (stats-diags):
119      - fix global Min/Max in case 1 processor get only empty tiles
120    o genmake2: replace (4 times)
121         make genmake_tc_1.o >> genmake_warnings 2>&1
122      with
123         COMM="$CC $CFLAGS -c genmake_tc_1.c"
124         echo $COMM >> genmake_warnings
125         $COMM >> genmake_warnings 2>&1
126      to make genmake2 always see the value of CC as specified in the optfile.
127    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
128      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
129      - modify verification advect_cs test to test SOM-advection on CS-grid.
130    o pkg/ctrl:
131      - Rewrite of ctrl_map_ini_ecco.F,
132        introducing a generic routine (ctrl_map_ini_gen.F).
133      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
134    
135    checkpoint59n
136    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
137      number in dedicate array "hdiag":
138      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
139        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
140      - many small changes (integer format) for large number of diagnostics
141      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
142        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
143    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
144      usingSphericalGrid, this allows to define the rotated grid coordinates
145      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
146      geographical coordinates according to the inverse of the rotation defined
147      by the Euler angles, so that Coriolis parameter and online-interpolation by
148      exf works with the geographical coordinates on XC/YC/XG/YG.
149      Naturally, this feature does not work with all packages, so some
150      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
151      profiles), because there the coordinates are assumed to be regular
152      spherical grid coordinates.
153    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
154      - introduce isopycnal diffusion coefficient control.
155    o tools/adjoint_options:
156      - additional control vector components.
157    o pkg/mnc: have mnc create marginally meaning full coordinate variables
158      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
159    o pkg/mypackage:
160      - add example of read/write pickup for state-var ;
161      - add entry points to the main code for state-vars diags & write-pickup.
162    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
163      transitions for useExfYearlyFields
164      - add new subroutine that determines the file to read from for
165        use*YearlyFields = .TRUE. and .FALSE.
166      - add a verification experiment to global_with_exf that tests
167        useExfYearlyFields with USE_EXF_INTERPOLATION defined
168    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
169      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
170      subroutines (which could be generated from a template, because they are
171      almost identical), for now they are included in obcs_prescribe_read.F for
172      simplicity
173    o pkg/exf:
174      - add a little more diagnostic to exf_interp_read (in analogy to
175        mds_read_field, can be turned off with debugLevel < debugLevA=1)
176      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
177        ugly but fast by unrolling short inner loops, inserting a unroll=8
178        directive in routine lagran, and splitting a loop and making do while the
179        outermost loop (the latter requires the intoduction of index arrays)
180    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
181    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
182      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
183    o verification/seaice_obcs: updated for restart test and latest options
184    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
185      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
186      for now this is only available for the C-grid code and also within
187      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
188    
189    checkpoint59m
190    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
191      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
192    o gad_som : fix flux output (& diagnostics) to have same units as other  
193      advection scheme fluxes (was previously multiplied by deltaT).  
194    o added verification/seaice_obcs both to test seaice open boundaries
195      and to provide an example matlab scrpt for generating them
196    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
197    o pkg/salt_plume: clean up salt_plume_frac.F to
198      remove redundancy in PlumeMethod 1 and 4
199    o pkg/kpp: added saltplume diagnostics
200    o pkg/obcs and pkg/seaice:
201      - do not set uice and vice to zero when OB*icefile are unspecified
202      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
203      - moved seaice tracer obcs after call to seaice_growth
204    o pkg/salt_plume: added various options for salt plume depth
205      criterion and for vertical distribution of the salt
206    
207    checkpoint59l
208    o pkg/ptracers: new version of ptracers pickup:
209      read meta file and write only fields which are needed to restart.
210      ( same logic as main pickup file ; also using pickupStrictlyMatch )
211    o pkg/seaice:
212      - add timescale for melting due to warm mixed layer as a means of
213        setting SEAICE_availHeatFrac more conveniently
214      - add a CPP-flag/runtime parameter check for flooding algorithm
215      - reformulated availHeat in seaice_growth.F to be independent of AREA
216    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
217      unit changes
218    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
219    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
220      SX vector computer.
221    o pkg/seaice:
222      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
223        seaice forcing fields can now be read only through pkg/exf
224      - removed some unused halos
225    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
226    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
227      or U/VICE from U/VWIND before computing U/VSTRESS
228    
229    checkpoint59k
230    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
231      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
232    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
233      all experiments pass when compile with un-initialised var. checking option.
234    o added pkg/salt_plume
235    o script to test restart (for now, in MITgcm_contrib/jmc_script)
236    o pkg/seaice: new read/write pickup version.
237      read meta file and write only fields which are needed to restart.
238      ( same logic as main pickup file ; also using pickupStrictlyMatch )
239    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
240    o lab_sea.hb87: modify the domain & update output.hb87.txt :
241      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
242      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
243      process. Fixed here by closing the domain at the Northern boundary.
244    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
245    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
246      a set of consecutive levels in/from a 3-D array.
247    o pkg/ptracers:
248      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
249      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
250    
251    checkpoint59j
252    o in pkgs: dic, obcs, offline, rbcs:
253      standard way to compute coeff. for time interpolation between 2 time reccords
254      which retains full precision (& make results less dependent on compiler).
255      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
256    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
257      packages instead of reading ice cover and wind speed separately
258    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
259     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
260      to allow to compile customized code before the update)
261    o cleaning-up:
262      - fix CPP instruction syntax in pkg/obcs
263      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
264        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
265      - fix some threads issue in IO parts.
266    o pkg/dic:
267      - add tons of "_d 0" (--> much better testreports !)
268       and then update outputs of tutorial_global_oce_biogeo
269    o pkg/mom_fluxform:
270      add a special version of momentum advection intended to conserve momentum
271      next to a bathymetry step or a coastline edge. (default = off = #undef)
272    o new read/write pickup version:
273      - for now, only implemented for main (mdsio) pickup file.
274      - write out only what is needed to restart; merge pickup_nh , pickup_ph
275        and main pickup together.
276      - read meta file; read only what is needed to restart; stop if a field
277        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
278        if it make sense (even if the restart is not perfect).
279      - if no meta file, assume that pickup to read corresponds exactly to
280        a pickup that would currently be written.
281      - read pickup written in the old format (until checkpoint59i) if it
282        recognizes an old meta file (no field-list).
283      - add a meta file in exp. which starts from a pickup: 2 cases:
284        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
285         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
286        b) a meta file describing the content of the associated pickup file
287         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
288    o pkg/mdsio & pkg/rw:
289      - new routine to read a meta file ; new set of routine to read
290        Multiple-fields file (with meta file).
291    o added open boundary conditions capability for seaice
292        HSNOW, HSALT, UICE, and VICE
293    
294    checkpoint59i
295    o adjoint:
296      * fix multiDimAdvection adjoint
297        (partial recomputation problem by TAF for fVerT(:,:,kDown)
298        and comlev1 size definition (maxpass vs. max. number of tracers)
299      * verification/global_ocean.90x45x15 adjoint now tests
300        NLFS and multiDimAdvection using DST3 (=30)
301      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
302    o pkg/kpp: add "_d 0" to real constant (if missing);
303      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
304      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
305    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
306      for internal parameters related to restart process (formerly from PARAMS.h)
307      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
308    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
309      as argument. (only atm2d & obcs write_pickup have not yet been updated)
310    o pkg/monitor:
311      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
312      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
313      - account for deep Atmosphere factor and density factor (anelastic)
314    o added open boundary conditions capability for seaice HEFF and AREA
315    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
316      thermodynamics
317      - requires a little reorganization, which affects the testreport results
318        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
319        so that now the conservative form is tested
320      - add a few comments
321    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
322    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
323    o add new diagnostics to seaice: advective, diffusive fluxes (only for
324      multidim-advection, for scheme 2 they are not filled) and transports,
325      thermodynamic growth rates
326    o change units of EmPmR (inside the code, + within coupling interface)
327      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
328      Affects results @ truncation level (cg2d match) and update output of
329       experiments: lab_sea(6), global_ocean.90x40x15(10),
330      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
331      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
332      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
333      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
334    
335    checkpoint59h
336    o pkg/exf:
337      - improve vectorization by moving if-statement out of loops in
338        exf_mapfields, exf_radiation
339      - exf_bulkformulae.F: introduce 2D fields and vectorize code
340    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
341    o testreport:
342      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
343        monitor & update offline_exf_seaice exp. output.
344      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
345    o pkg/seaice:
346      - bug fix in the evp solver: boundary conditions were affected be
347        masking of zMax/zMin (changes results)
348      - minor bug fix in boundary conditions in seaice_calc_strainrates
349        (changes results for no_slip)
350      - seaice_lsr.F: make interpolation of eta dependent on boundaries
351      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
352      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
353        stress formulation and no-slip boundary conditions
354    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
355      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
356    o pkg/seaice: a first HSALT time stepping equation has been checked in
357    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
358      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
359      without requiring DO-IF statements
360    o pkg/thsice:
361      use continuous power-law function for partition of energy between lateral
362      melting/freezing and thinning/thickening ; old code using step function
363      still available with #undef THSICE_FRACEN_POWERLAW
364      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
365    o testreport: change AD testing : check against results/output_adm.txt
366      using same scripts as for forward test.
367    
368    checkpoint59g
369    o adjoint testing: in preparation for changing testreport:
370      - output format: cost and grad written on separated lines
371      - ad output results in directory "results" (instead of "results_ad")
372    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
373    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
374    o pkg/ecco: allow user defined cost function contributions
375    o testreport:
376      Allow to choose (per experiment) the list of tested output variables
377       and the main variable (used to issue a pass/FAIL ) ;
378      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
379      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
380      Also modify printing of summary:
381       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
382       b) echo the list of tested variables in the individual summary.txt of
383          each experiment.
384    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
385      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
386      (but still depend on the tile decompostion of the domain).
387    o pkg/seaice: change a discretization detail to make the B-grid code
388      "more symmetric". This change is likely to remove all "ridges/leads" that
389      where quasi-aligned with the grid in B-grid solutions. It may also be
390      the solution to the stress coupling issues with the B-grid.
391    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
392      remove .cvsignore from input dir. (since testreport no longer run here).
393    o pkg/thsice:
394     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
395     - fix reshaping of sea-ice just after advection:
396       melt all the ice only if ice-volume is too small.
397     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
398       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
399     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
400    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
401      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
402    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
403      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
404      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
405      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
406      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
407      -> update output.txt
408    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
409     this affects truncation error: -> update output.txt of exp:
410      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
411      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
412    
413    checkpoint59f
414    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
415    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
416      a bounded range (in forward mode)
417    o pkg/ecco, ctrl, autodiff and mom_common:
418     internal parameter controls, completements of implementations
419    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
420    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
421      (not seem any difference in testing results).
422    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
423       at face corners.
424    o pkg/generic_advdiff:
425     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
426      loop range indices for computing vertical advection tendency
427      and do the calculation in the interior only (no overlap) ;
428      for now, only implemented for SOM advection (to save CPU time).
429     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
430    o exch2 adjoint
431      First set of changes:
432      - add exch2 hand-written adjoint templates
433      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
434        This will require cleanup in pkg/autodiff/*.F
435        (changed routines currently kept separate in verif. code/)
436      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
437        that used to hide exch2 or cubed-sphere specific code
438        (commented via 'cph-exch2')
439    o pkg/seaice
440      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
441    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
442       output of global_ocean.cs32x15.thsice .
443    
444    checkpoint59e
445    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
446      for B-grid vector (not yet tested) and C-grid vector (<- only used
447      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
448    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
449      (#ifdef ALLOW_SALT_PLUME)
450    o gather_2d/scatter_2d: removed halo regions
451    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
452      scheme and the corresponding test case (under front_relax dir). For now,
453      only available with Skew-flux form and not yet tested in realistic set-up.
454      adjoint: store directives updated, but gradient checks deteriorated,
455      so maybe GM/Redi adjoint is now broken.
456    o seaice adjoint
457      * add AREA, HEFF, HSNOW as control variable
458        (should not change lab_sea results)
459      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
460    o pkg/seaice:
461      * added computation of saltFlux in seaice_growth;
462        For time being, sea ice salinity is assumed constant
463        contribution of snow flooding to freshening of sea ice is neglected.
464        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
465        defaults to 0.0 in order to maintain backward compatibility.
466        Typical values for SEAICE_salinity are 4 to 10 g/kg.
467      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
468      * added SEAICE_availHeatFrac, which specifies fraction of surface level
469        heat content used to melt or grow ice
470      * commented out cap of HICE: it helps keep ice thinner
471      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
472      * applied OBCS T/S mask to HEFFM sea ice mask
473    
474    checkpoint59d
475    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
476     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
477     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
478    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
479     and change default value of parameter "GM_Small_Number";
480     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
481       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
482       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
483    o pkg/ecco: cost function when applying pkg/smooth to controls
484    o pkg/ctrl: add forcingPrecond run time parameter
485    o pkg/seaice:
486     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
487     - fix bug in metric terms of u-equation in LSR solver (implicit part),
488       changes verification/lab_sea
489     - rearrange implicit part of u-equation in LSR solver to make it easier to
490       read, understand, and debug. This causes changes at the truncation level.
491     - fix (serious) bug in the boundary conditions (sign error in the implicit
492       part) of the LSR solver. Changes all LSR results.
493     - fixed problem with HSNOW initialization to avoid thick snow when AREA
494       is initilized with small values - does not change lab_sea results.
495     - added HsnowFile initialization capability
496    o pkg/smooth: addition to model/src and pkg/ctrl so allow
497     initialization of pkg/smooth and application to control vector
498    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
499    o dependencies: pkg/profiles requires pkg/cal
500    o pkg/profiles:
501     - added option ALLOW_PROFILES_GENERICGRID
502         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
503         that interpolation information (grid points and coefficients) is provided
504         within the netcdf input files.
505         -> sample matlab scripts can be found in MITgcm_contrib/gael
506         that allow you to prepare netcdf input files.
507     - also modified: cleaner include statements, cleaner error print statements,
508       cleaner stops when error, and more tests of the netcdf input files consistency.
509    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
510    o pkg/seaice:
511     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
512       requires a new routine: seaice_diagnostics_fill.F
513     - make sure that seaice does not move if not forced (pressure replacement
514       method, Hibler and Ip, 1995), changes results
515     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
516     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
517       It is turned off by default (=-1.), because it changes the results.
518     - make it possible to read AREA from a file, too.
519    
520    checkpoint59c
521    o add S/R and diagnostics for oceanic mixed-layer depth
522    o move GMRedi call after all vertical mixing schemes (including KPP)
523    o pkg/thsice:
524     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
525      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
526    o pkg/obcs:
527     - bug fix for balance code
528    o pkg/seaice:
529      - allow values of SEAICE_elasticParm > 1
530      - add new parameter SEAICE_evpTauRelax as an alternative
531        to SEAICE_elasticParm
532      - make lsr boundary conditions free slip (by default), changes result
533      - add code for no slip boundary conditions for lsr
534      - set minimum of zeta to zero (and not 4e8) (changes results)
535      - add a cap on AREA after advecting AREA if seaice_growth is not called
536    o change calculation of Visbeck K:
537      - no longer depend on tapering scheme; instead, compute slope (limited
538        by GM_maxSlope). this is equivalent to what was comuted before with
539        clipping or linear tappering.
540      - fix vertical averaging (wrong by 1/2 level)
541      - leave the old version (but will not be maintained) within
542        #ifdef OLD_VISBECK_CALC / #endif
543      - update output of exp. ideal_2D_oce
544    o change error catch in calc_r_star to improve vectorization
545    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
546      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
547    o adjoint:
548      Re-organized adjoint checkpointing according to Matt Mazloff
549      (but with modifs/completions/cleanups)
550      Storing is now bundled into large arrays to optimized I/O
551      (and second step in cleanup of the_main_loop)
552    
553    checkpoint59b
554    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
555      - export/import (between ocean & coupler) fields needed for ocean DIC.
556    o pkg/seaice:
557      - get rid of three more exchanges seaice_calc_viscosities (required
558        different loop boundaries in seaice_lsr and seaice_ocean_stress)
559      - bug fix in seaice_ocean_stress (update of lab_sea required)
560      - reduce loop boundaries to necessary minimum also in seaice_evp
561      - go back to the old way of computing deltaC/Z as the adjoint likes that
562        better
563    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
564      passive tracer to an Age Tracer) + update output.txt
565    o pkg/exf:
566      - implement A-grid / C-grid selection for wind-stress input files.
567      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
568      for now, in exf_bulk_largeyeager04.F only :
569      - change implementation for case where windspeed + 2. components wind-stress
570        are read-in. AND use rhoConstFresh to convert evap.
571    o pkg/seaice:
572      - use correct EXCH_UV for wind-forcing (on A-grid).
573      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
574        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
575    o pkg/exf:
576      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
577      EXF_INTERPOLATION:
578      - merge global_with_exf/code version of exf_interp_read.F
579        to the main code ;
580      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
581        reading the file ; Important: This options needs to be defined to recover
582        previous code.
583        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
584      - no longer loose real*8 precision along the way when using exf_iprec=64.
585    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
586      - change discretisation of evp-solver in order to avoid another exchange
587        (changes lab_sea) and clean up a little
588      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
589        help the adjoint (this also changes the results slightly)
590      - add a few "_d 0" where they had been missing in seaice_evp.F
591      - cleaning up: remove unused seaice_calc_rhs.F
592    o pkg/exf: some cleaning-up:
593      - change various "constants" into runtime parameters
594      - cleaned-up Large&Yeager04 routine which should eventually
595        replace exf_bulkformulae.F (changed names of S/R and CPP)
596        and merged various ALLOW_ATM_WIND options
597     only used with thsice pkg (in thsice_get_exf.F):
598      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
599        which are used when useStabilityFct_overIce=TRUE (= the default)
600      - change default values of ice & snow emissivity and scale downward LW
601        by ice & snow emissivity.
602    o pkg/thsice:
603     fix few little problems, in thsice_calc_thickn.F:
604      - growth vertically (and not laterally) if iceFrac == iceMaskMax
605      - melt only laterally if hIce < hThinIce (as the comments say)
606      and in thsice_extend.F:
607      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
608      - start to form ice as soon as the minimum ice-volume is reachable.
609     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
610      and cpl_aim+ocn
611    o pkg/kpp
612     - move computation of surface related input fields to KPP into a new
613       subroutine kpp_forcing_surf.F
614     - remove wrong (within bi,bj loops) EXCH calls.
615     - little cleaning (add argument myThid in last position, cvs header ...)
616     - for now, fix conservation problem by exchanging KPPviscAz (may not
617       be the best fix)
618    o pkg/seaice
619     - check for inconsistent evp parameter/cpp-flag combination
620     - remove leftover errIO flat for obsolete name list error handling
621    o OpenAD
622     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
623    
624    checkpoint59a
625    o pkg/seaice: some parameter clarifications and a little bit of clean up
626    o pkg/thsice: rename run-time parameters:
627       himin       -> hIceMin
628       himin0      -> hThinIce
629       hihig       -> hThickIce
630       i0          -> i0swFrac
631       transCoef   -> bMeltCoef
632       frac_energy -> fracMelting
633      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
634       with default values (for now) that do not change the results.
635      remove old version of thsice vars advection in pkg/seaice.
636    o in FFIELDS.h:
637      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
638      - make pLoad & sIceLoad always available (but still only used if
639         ATMOSPHERIC_LOADING is #define).
640    o pkg/kpp: replaced _KPP_RL with _RL
641    o bug fixes for vertical diffusivity computations when both KPP and
642        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
643        are no longer updating the vertical diffusivity array
644        (passed as argument) but are (re-) setting those arrays.
645    o pkg/seaice: fix bug in evp solver, while doing that
646      - change (improve?) discretization of stress computations for both
647        cgrid-lsr and evp solver
648      - add a new routine to compute strain rates
649      - the above changes lab_sea results
650      - add no slip conditions for evp solver (off by default), lsr-version
651        may follow
652      - fix exchange for shear at Z-points (does not change lab_sea)
653      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
654        (to force the user to pick a time step since there is not "safe" way
655        of choosing it)
656      - add principal stress diagnostics
657      - rearrange fields for evp a little to avoid having to call a: too many
658        exchanges and b: exchanges for stress trensor components which we do
659        not have.
660      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
661        of evp, complete rewrite for lsr case (latter is does not yet work
662        in all cases)
663    o pkg/kpp: add code to have mixing in shelf ice caverns
664      - add myThid to all kpp routines (long overdue)
665    
666    checkpoint59
667    o pkg/exf:
668      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
669        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
670      - move exf header files from lower_case.h to UPPER_CASE.h ;
671        add missing cvs Header & Name
672      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
673      - add namelist param. selectStressGridPosition, exf_monFreq
674      - retire many _CLIM routines, and remove data.exf_clim
675        + params moved to data.exf
676        + climsst, climsss now handled by exf_set_gen, i.e.
677          climss?period=0 refers to constant field,
678          climss?period=-12 to monthly forcing
679      - split up namelists in data.exf
680    o pkg/seaice:
681      - remove seaice_exch and seaice_exch_uv
682      - remove superfluous exchange of theta
683      - add myThid to seaice_budget_ocean/ice
684      - add new interface for atmospheric wind forcing (C-grid only)
685        + new routine
686        + two new field (taux, tauy for stress over ice)
687        + removed one global field (DAIRN) for C-grid case only
688    o pkg/thsise
689      - 2nd set of modifs for thsice adjoint in conjunction with exf
690    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
691    
692    checkpoint58y_post
693    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
694      vertical diffusivity, similar to that in MOM4; turned on using
695      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
696      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
697    o Added capability for 3D specification of background vertical diffusion
698      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
699      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
700      "data" file that contains the 3D vertical diffusivity coefficients.
701    o ice dynamics (pkg/seaice) with thsice thermodynamics:
702      - add code within pkg thsice to advect & diffuse sea-ice fields
703      similar to (and will replace) what has been added in  seaice_advdiff.F,
704      but: - conserving Mass, Heat & Salt.
705           - better when using non-linear advection scheme (not yet fully tested)
706           - can also be used in atmospheric set-up (for now, only the diffusion).
707    
708    checkpoint58x_post
709    o IO option for global-file compact format:
710      - add options when generating topology (utils/exch2/matlab-topology-generator)
711      - add I/O capability (pkg/mdsio).
712      - adapt utils/matlab/rdmds.m to read this format.
713      for now long-line format not yet supported by pkg/mdsio (& exch2).
714    o shelfice: add a few diagnostics
715    
716  checkpoint58w_post  checkpoint58w_post
717  o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:  o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
718    rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref    rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref

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