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revision 1.628 by jmc, Mon Mar 13 04:44:25 2006 UTC revision 1.996 by jmc, Wed May 28 03:37:35 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 new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
8      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
9      fix option to read coriolis(@ cell-corner) from files with CS-grid.
10    o pkg/mnc: add some attributes to standard 1D-coordinate variables
11    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
12      mass points, when using mnc for output
13      - add runtime parameter (missing_value, missing_value_int) to override
14        default (which is the value of getcon('UNDEF'))
15    o pkg/mnc: prepare mnc for the actual use of missing values with the
16      diagnostics package: small fix in mnc_cw_readwrite.template and more
17      initialisation of never used fields
18      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
19      versions
20    o pkg/thsice/thsice_ini_vars.F added default initial values so that
21      thermodynamics sea ice solver does not blow up when some initial fields
22      are missing.
23    o move from external_forcing_surf.F to ini_forcing.F
24      the p-coord. hack consisting in using pLoad to set phi0surf ;
25      update output of tutorial_global_oce_in_p (affected @ truncation level).
26    o Freshen up a bit hs94.1x64x5, notably:
27      remove rotationPeriod and tRef=5*0. (adjoint only), and add
28      exactConserv=.TRUE.
29    o pkg/generic_advdiff:
30      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
31      applies to files where Temperature & Salinity 2nd Order moments are used.
32    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
33      this uses a dynamically allocated internal state data structure
34      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
35      and requires a fortran 90 compiler
36    
37    checkpoint59q
38    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
39       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
40    o Refresh tutorial_global_oce_biogeo, notably:
41      - change bathymetry (put back seamounts in ACC, use hFacs)
42      - change EOS (POLY3 --> JMD95Z)
43      - use Bryan-Lewis vertical diffusivity
44      - use multidimensional advection
45      - remove old virtual virtual in dic pkg, now done through ptracer pkg
46      - change a couple of parameters in dic pkg
47    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
48    o pkg/obcs: change default to OBCSfixTopo = .true.,
49      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
50      - replace "debugMode" with "debugLevel .GE. debLevB"
51    o implementation of TAF directives for gchem,cfc,dic
52    o remove "exp5" (replaced by tutorial_deep_convection).
53    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
54      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
55      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
56      --> changes results in exp4, seaice_obcs
57    o tutorial_deep_convection :
58      update the set-up and increase resolution and domain size ; start
59      from pseudo initial conditions = output at t=120mn in order to see
60      something happening when running testreport.
61    o pkg/seaice: add os7mp as an advection scheme
62                  add check for advection schemes
63                  add a flag for restoring T and S underneath sea ice
64    o pkg/my82: add netcdf-support and diagnostics
65    o thsice pkg:
66      - Now hsMax limits snow height by turning it into ice following
67        flooding scheme (and now conserving energy)
68      - Slight rewriting of the formula in thsice_calc_thick.F
69      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
70      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
71    
72    checkpoint59p
73    o gchem / dic / cfc :
74      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
75      - add new parameter files: "data.dic" & "data.cfc" ;
76      - various re-arrangement in initialisation & header file ;
77      - fix tutorial_global_oce_biogeo for multi-threaded test.
78    o pkg/dic: test for "pickup_dic" file when restarting ;
79      if no pickup-file, can restart with a re-initialised pH (same as it did
80      before) providing pickupStrictlyMatch is set to False.
81    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
82      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
83    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
84      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
85    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
86     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
87       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
88    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
89       scheme to use for vorticty-term ;
90     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
91       (with default selectVortScheme, return to original discretisation)
92     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
93    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
94    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
95      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
96      also fix diagnostics VISCAHW & VISCA4W.
97    
98    checkpoint59o
99    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
100    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
101      move a few statemens out the main loop into separate loops
102    o pkg/shelfice:
103      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
104        (kg/m^2/s), does not break tests, because in verification/isomip,
105        rhoConstFresh=rhoConst (by accident)
106      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
107      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
108        new file model/src/seawater.F, so that they are available for all pkgs.
109      - convert potential temperature into in-situ temperature. This changes the
110        isomip tests => update tests
111    o add a flag writePickupAtEnd (default=true) to be able to suppress
112      writing a pickup at the last timestep
113    o tools/mpack-1.6 :
114      - disable automake (not working) and autoconf (not needed).
115      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
116        also cleaner with much less compilation warnings.
117    o pkg/profiles:
118      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
119      (for "less than 32 characters name" compiler requirement)
120    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
121      conditions that have a different sampling frequency than S/T/U/V obcs
122    o pkg/diagnostics (stats-diags):
123      - fix global Min/Max in case 1 processor get only empty tiles
124    o genmake2: replace (4 times)
125         make genmake_tc_1.o >> genmake_warnings 2>&1
126      with
127         COMM="$CC $CFLAGS -c genmake_tc_1.c"
128         echo $COMM >> genmake_warnings
129         $COMM >> genmake_warnings 2>&1
130      to make genmake2 always see the value of CC as specified in the optfile.
131    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
132      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
133      - modify verification advect_cs test to test SOM-advection on CS-grid.
134    o pkg/ctrl:
135      - Rewrite of ctrl_map_ini_ecco.F,
136        introducing a generic routine (ctrl_map_ini_gen.F).
137      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
138    
139    checkpoint59n
140    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
141      number in dedicate array "hdiag":
142      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
143        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
144      - many small changes (integer format) for large number of diagnostics
145      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
146        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
147    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
148      usingSphericalGrid, this allows to define the rotated grid coordinates
149      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
150      geographical coordinates according to the inverse of the rotation defined
151      by the Euler angles, so that Coriolis parameter and online-interpolation by
152      exf works with the geographical coordinates on XC/YC/XG/YG.
153      Naturally, this feature does not work with all packages, so some
154      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
155      profiles), because there the coordinates are assumed to be regular
156      spherical grid coordinates.
157    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
158      - introduce isopycnal diffusion coefficient control.
159    o tools/adjoint_options:
160      - additional control vector components.
161    o pkg/mnc: have mnc create marginally meaning full coordinate variables
162      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
163    o pkg/mypackage:
164      - add example of read/write pickup for state-var ;
165      - add entry points to the main code for state-vars diags & write-pickup.
166    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
167      transitions for useExfYearlyFields
168      - add new subroutine that determines the file to read from for
169        use*YearlyFields = .TRUE. and .FALSE.
170      - add a verification experiment to global_with_exf that tests
171        useExfYearlyFields with USE_EXF_INTERPOLATION defined
172    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
173      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
174      subroutines (which could be generated from a template, because they are
175      almost identical), for now they are included in obcs_prescribe_read.F for
176      simplicity
177    o pkg/exf:
178      - add a little more diagnostic to exf_interp_read (in analogy to
179        mds_read_field, can be turned off with debugLevel < debugLevA=1)
180      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
181        ugly but fast by unrolling short inner loops, inserting a unroll=8
182        directive in routine lagran, and splitting a loop and making do while the
183        outermost loop (the latter requires the intoduction of index arrays)
184    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
185    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
186      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
187    o verification/seaice_obcs: updated for restart test and latest options
188    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
189      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
190      for now this is only available for the C-grid code and also within
191      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
192    
193    checkpoint59m
194    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
195      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
196    o gad_som : fix flux output (& diagnostics) to have same units as other  
197      advection scheme fluxes (was previously multiplied by deltaT).  
198    o added verification/seaice_obcs both to test seaice open boundaries
199      and to provide an example matlab scrpt for generating them
200    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
201    o pkg/salt_plume: clean up salt_plume_frac.F to
202      remove redundancy in PlumeMethod 1 and 4
203    o pkg/kpp: added saltplume diagnostics
204    o pkg/obcs and pkg/seaice:
205      - do not set uice and vice to zero when OB*icefile are unspecified
206      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
207      - moved seaice tracer obcs after call to seaice_growth
208    o pkg/salt_plume: added various options for salt plume depth
209      criterion and for vertical distribution of the salt
210    
211    checkpoint59l
212    o pkg/ptracers: new version of ptracers pickup:
213      read meta file and write only fields which are needed to restart.
214      ( same logic as main pickup file ; also using pickupStrictlyMatch )
215    o pkg/seaice:
216      - add timescale for melting due to warm mixed layer as a means of
217        setting SEAICE_availHeatFrac more conveniently
218      - add a CPP-flag/runtime parameter check for flooding algorithm
219      - reformulated availHeat in seaice_growth.F to be independent of AREA
220    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
221      unit changes
222    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
223    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
224      SX vector computer.
225    o pkg/seaice:
226      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
227        seaice forcing fields can now be read only through pkg/exf
228      - removed some unused halos
229    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
230    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
231      or U/VICE from U/VWIND before computing U/VSTRESS
232    
233    checkpoint59k
234    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
235      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
236    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
237      all experiments pass when compile with un-initialised var. checking option.
238    o added pkg/salt_plume
239    o script to test restart (for now, in MITgcm_contrib/jmc_script)
240    o pkg/seaice: new read/write pickup version.
241      read meta file and write only fields which are needed to restart.
242      ( same logic as main pickup file ; also using pickupStrictlyMatch )
243    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
244    o lab_sea.hb87: modify the domain & update output.hb87.txt :
245      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
246      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
247      process. Fixed here by closing the domain at the Northern boundary.
248    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
249    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
250      a set of consecutive levels in/from a 3-D array.
251    o pkg/ptracers:
252      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
253      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
254    
255    checkpoint59j
256    o in pkgs: dic, obcs, offline, rbcs:
257      standard way to compute coeff. for time interpolation between 2 time reccords
258      which retains full precision (& make results less dependent on compiler).
259      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
260    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
261      packages instead of reading ice cover and wind speed separately
262    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
263     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
264      to allow to compile customized code before the update)
265    o cleaning-up:
266      - fix CPP instruction syntax in pkg/obcs
267      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
268        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
269      - fix some threads issue in IO parts.
270    o pkg/dic:
271      - add tons of "_d 0" (--> much better testreports !)
272       and then update outputs of tutorial_global_oce_biogeo
273    o pkg/mom_fluxform:
274      add a special version of momentum advection intended to conserve momentum
275      next to a bathymetry step or a coastline edge. (default = off = #undef)
276    o new read/write pickup version:
277      - for now, only implemented for main (mdsio) pickup file.
278      - write out only what is needed to restart; merge pickup_nh , pickup_ph
279        and main pickup together.
280      - read meta file; read only what is needed to restart; stop if a field
281        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
282        if it make sense (even if the restart is not perfect).
283      - if no meta file, assume that pickup to read corresponds exactly to
284        a pickup that would currently be written.
285      - read pickup written in the old format (until checkpoint59i) if it
286        recognizes an old meta file (no field-list).
287      - add a meta file in exp. which starts from a pickup: 2 cases:
288        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
289         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
290        b) a meta file describing the content of the associated pickup file
291         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
292    o pkg/mdsio & pkg/rw:
293      - new routine to read a meta file ; new set of routine to read
294        Multiple-fields file (with meta file).
295    o added open boundary conditions capability for seaice
296        HSNOW, HSALT, UICE, and VICE
297    
298    checkpoint59i
299    o adjoint:
300      * fix multiDimAdvection adjoint
301        (partial recomputation problem by TAF for fVerT(:,:,kDown)
302        and comlev1 size definition (maxpass vs. max. number of tracers)
303      * verification/global_ocean.90x45x15 adjoint now tests
304        NLFS and multiDimAdvection using DST3 (=30)
305      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
306    o pkg/kpp: add "_d 0" to real constant (if missing);
307      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
308      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
309    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
310      for internal parameters related to restart process (formerly from PARAMS.h)
311      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
312    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
313      as argument. (only atm2d & obcs write_pickup have not yet been updated)
314    o pkg/monitor:
315      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
316      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
317      - account for deep Atmosphere factor and density factor (anelastic)
318    o added open boundary conditions capability for seaice HEFF and AREA
319    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
320      thermodynamics
321      - requires a little reorganization, which affects the testreport results
322        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
323        so that now the conservative form is tested
324      - add a few comments
325    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
326    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
327    o add new diagnostics to seaice: advective, diffusive fluxes (only for
328      multidim-advection, for scheme 2 they are not filled) and transports,
329      thermodynamic growth rates
330    o change units of EmPmR (inside the code, + within coupling interface)
331      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
332      Affects results @ truncation level (cg2d match) and update output of
333       experiments: lab_sea(6), global_ocean.90x40x15(10),
334      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
335      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
336      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
337      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
338    
339    checkpoint59h
340    o pkg/exf:
341      - improve vectorization by moving if-statement out of loops in
342        exf_mapfields, exf_radiation
343      - exf_bulkformulae.F: introduce 2D fields and vectorize code
344    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
345    o testreport:
346      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
347        monitor & update offline_exf_seaice exp. output.
348      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
349    o pkg/seaice:
350      - bug fix in the evp solver: boundary conditions were affected be
351        masking of zMax/zMin (changes results)
352      - minor bug fix in boundary conditions in seaice_calc_strainrates
353        (changes results for no_slip)
354      - seaice_lsr.F: make interpolation of eta dependent on boundaries
355      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
356      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
357        stress formulation and no-slip boundary conditions
358    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
359      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
360    o pkg/seaice: a first HSALT time stepping equation has been checked in
361    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
362      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
363      without requiring DO-IF statements
364    o pkg/thsice:
365      use continuous power-law function for partition of energy between lateral
366      melting/freezing and thinning/thickening ; old code using step function
367      still available with #undef THSICE_FRACEN_POWERLAW
368      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
369    o testreport: change AD testing : check against results/output_adm.txt
370      using same scripts as for forward test.
371    
372    checkpoint59g
373    o adjoint testing: in preparation for changing testreport:
374      - output format: cost and grad written on separated lines
375      - ad output results in directory "results" (instead of "results_ad")
376    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
377    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
378    o pkg/ecco: allow user defined cost function contributions
379    o testreport:
380      Allow to choose (per experiment) the list of tested output variables
381       and the main variable (used to issue a pass/FAIL ) ;
382      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
383      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
384      Also modify printing of summary:
385       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
386       b) echo the list of tested variables in the individual summary.txt of
387          each experiment.
388    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
389      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
390      (but still depend on the tile decompostion of the domain).
391    o pkg/seaice: change a discretization detail to make the B-grid code
392      "more symmetric". This change is likely to remove all "ridges/leads" that
393      where quasi-aligned with the grid in B-grid solutions. It may also be
394      the solution to the stress coupling issues with the B-grid.
395    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
396      remove .cvsignore from input dir. (since testreport no longer run here).
397    o pkg/thsice:
398     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
399     - fix reshaping of sea-ice just after advection:
400       melt all the ice only if ice-volume is too small.
401     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
402       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
403     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
404    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
405      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
406    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
407      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
408      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
409      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
410      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
411      -> update output.txt
412    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
413     this affects truncation error: -> update output.txt of exp:
414      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
415      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
416    
417    checkpoint59f
418    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
419    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
420      a bounded range (in forward mode)
421    o pkg/ecco, ctrl, autodiff and mom_common:
422     internal parameter controls, completements of implementations
423    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
424    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
425      (not seem any difference in testing results).
426    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
427       at face corners.
428    o pkg/generic_advdiff:
429     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
430      loop range indices for computing vertical advection tendency
431      and do the calculation in the interior only (no overlap) ;
432      for now, only implemented for SOM advection (to save CPU time).
433     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
434    o exch2 adjoint
435      First set of changes:
436      - add exch2 hand-written adjoint templates
437      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
438        This will require cleanup in pkg/autodiff/*.F
439        (changed routines currently kept separate in verif. code/)
440      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
441        that used to hide exch2 or cubed-sphere specific code
442        (commented via 'cph-exch2')
443    o pkg/seaice
444      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
445    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
446       output of global_ocean.cs32x15.thsice .
447    
448    checkpoint59e
449    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
450      for B-grid vector (not yet tested) and C-grid vector (<- only used
451      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
452    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
453      (#ifdef ALLOW_SALT_PLUME)
454    o gather_2d/scatter_2d: removed halo regions
455    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
456      scheme and the corresponding test case (under front_relax dir). For now,
457      only available with Skew-flux form and not yet tested in realistic set-up.
458      adjoint: store directives updated, but gradient checks deteriorated,
459      so maybe GM/Redi adjoint is now broken.
460    o seaice adjoint
461      * add AREA, HEFF, HSNOW as control variable
462        (should not change lab_sea results)
463      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
464    o pkg/seaice:
465      * added computation of saltFlux in seaice_growth;
466        For time being, sea ice salinity is assumed constant
467        contribution of snow flooding to freshening of sea ice is neglected.
468        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
469        defaults to 0.0 in order to maintain backward compatibility.
470        Typical values for SEAICE_salinity are 4 to 10 g/kg.
471      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
472      * added SEAICE_availHeatFrac, which specifies fraction of surface level
473        heat content used to melt or grow ice
474      * commented out cap of HICE: it helps keep ice thinner
475      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
476      * applied OBCS T/S mask to HEFFM sea ice mask
477    
478    checkpoint59d
479    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
480     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
481     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
482    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
483     and change default value of parameter "GM_Small_Number";
484     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
485       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
486       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
487    o pkg/ecco: cost function when applying pkg/smooth to controls
488    o pkg/ctrl: add forcingPrecond run time parameter
489    o pkg/seaice:
490     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
491     - fix bug in metric terms of u-equation in LSR solver (implicit part),
492       changes verification/lab_sea
493     - rearrange implicit part of u-equation in LSR solver to make it easier to
494       read, understand, and debug. This causes changes at the truncation level.
495     - fix (serious) bug in the boundary conditions (sign error in the implicit
496       part) of the LSR solver. Changes all LSR results.
497     - fixed problem with HSNOW initialization to avoid thick snow when AREA
498       is initilized with small values - does not change lab_sea results.
499     - added HsnowFile initialization capability
500    o pkg/smooth: addition to model/src and pkg/ctrl so allow
501     initialization of pkg/smooth and application to control vector
502    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
503    o dependencies: pkg/profiles requires pkg/cal
504    o pkg/profiles:
505     - added option ALLOW_PROFILES_GENERICGRID
506         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
507         that interpolation information (grid points and coefficients) is provided
508         within the netcdf input files.
509         -> sample matlab scripts can be found in MITgcm_contrib/gael
510         that allow you to prepare netcdf input files.
511     - also modified: cleaner include statements, cleaner error print statements,
512       cleaner stops when error, and more tests of the netcdf input files consistency.
513    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
514    o pkg/seaice:
515     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
516       requires a new routine: seaice_diagnostics_fill.F
517     - make sure that seaice does not move if not forced (pressure replacement
518       method, Hibler and Ip, 1995), changes results
519     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
520     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
521       It is turned off by default (=-1.), because it changes the results.
522     - make it possible to read AREA from a file, too.
523    
524    checkpoint59c
525    o add S/R and diagnostics for oceanic mixed-layer depth
526    o move GMRedi call after all vertical mixing schemes (including KPP)
527    o pkg/thsice:
528     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
529      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
530    o pkg/obcs:
531     - bug fix for balance code
532    o pkg/seaice:
533      - allow values of SEAICE_elasticParm > 1
534      - add new parameter SEAICE_evpTauRelax as an alternative
535        to SEAICE_elasticParm
536      - make lsr boundary conditions free slip (by default), changes result
537      - add code for no slip boundary conditions for lsr
538      - set minimum of zeta to zero (and not 4e8) (changes results)
539      - add a cap on AREA after advecting AREA if seaice_growth is not called
540    o change calculation of Visbeck K:
541      - no longer depend on tapering scheme; instead, compute slope (limited
542        by GM_maxSlope). this is equivalent to what was comuted before with
543        clipping or linear tappering.
544      - fix vertical averaging (wrong by 1/2 level)
545      - leave the old version (but will not be maintained) within
546        #ifdef OLD_VISBECK_CALC / #endif
547      - update output of exp. ideal_2D_oce
548    o change error catch in calc_r_star to improve vectorization
549    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
550      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
551    o adjoint:
552      Re-organized adjoint checkpointing according to Matt Mazloff
553      (but with modifs/completions/cleanups)
554      Storing is now bundled into large arrays to optimized I/O
555      (and second step in cleanup of the_main_loop)
556    
557    checkpoint59b
558    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
559      - export/import (between ocean & coupler) fields needed for ocean DIC.
560    o pkg/seaice:
561      - get rid of three more exchanges seaice_calc_viscosities (required
562        different loop boundaries in seaice_lsr and seaice_ocean_stress)
563      - bug fix in seaice_ocean_stress (update of lab_sea required)
564      - reduce loop boundaries to necessary minimum also in seaice_evp
565      - go back to the old way of computing deltaC/Z as the adjoint likes that
566        better
567    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
568      passive tracer to an Age Tracer) + update output.txt
569    o pkg/exf:
570      - implement A-grid / C-grid selection for wind-stress input files.
571      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
572      for now, in exf_bulk_largeyeager04.F only :
573      - change implementation for case where windspeed + 2. components wind-stress
574        are read-in. AND use rhoConstFresh to convert evap.
575    o pkg/seaice:
576      - use correct EXCH_UV for wind-forcing (on A-grid).
577      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
578        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
579    o pkg/exf:
580      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
581      EXF_INTERPOLATION:
582      - merge global_with_exf/code version of exf_interp_read.F
583        to the main code ;
584      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
585        reading the file ; Important: This options needs to be defined to recover
586        previous code.
587        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
588      - no longer loose real*8 precision along the way when using exf_iprec=64.
589    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
590      - change discretisation of evp-solver in order to avoid another exchange
591        (changes lab_sea) and clean up a little
592      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
593        help the adjoint (this also changes the results slightly)
594      - add a few "_d 0" where they had been missing in seaice_evp.F
595      - cleaning up: remove unused seaice_calc_rhs.F
596    o pkg/exf: some cleaning-up:
597      - change various "constants" into runtime parameters
598      - cleaned-up Large&Yeager04 routine which should eventually
599        replace exf_bulkformulae.F (changed names of S/R and CPP)
600        and merged various ALLOW_ATM_WIND options
601     only used with thsice pkg (in thsice_get_exf.F):
602      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
603        which are used when useStabilityFct_overIce=TRUE (= the default)
604      - change default values of ice & snow emissivity and scale downward LW
605        by ice & snow emissivity.
606    o pkg/thsice:
607     fix few little problems, in thsice_calc_thickn.F:
608      - growth vertically (and not laterally) if iceFrac == iceMaskMax
609      - melt only laterally if hIce < hThinIce (as the comments say)
610      and in thsice_extend.F:
611      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
612      - start to form ice as soon as the minimum ice-volume is reachable.
613     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
614      and cpl_aim+ocn
615    o pkg/kpp
616     - move computation of surface related input fields to KPP into a new
617       subroutine kpp_forcing_surf.F
618     - remove wrong (within bi,bj loops) EXCH calls.
619     - little cleaning (add argument myThid in last position, cvs header ...)
620     - for now, fix conservation problem by exchanging KPPviscAz (may not
621       be the best fix)
622    o pkg/seaice
623     - check for inconsistent evp parameter/cpp-flag combination
624     - remove leftover errIO flat for obsolete name list error handling
625    o OpenAD
626     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
627    
628    checkpoint59a
629    o pkg/seaice: some parameter clarifications and a little bit of clean up
630    o pkg/thsice: rename run-time parameters:
631       himin       -> hIceMin
632       himin0      -> hThinIce
633       hihig       -> hThickIce
634       i0          -> i0swFrac
635       transCoef   -> bMeltCoef
636       frac_energy -> fracMelting
637      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
638       with default values (for now) that do not change the results.
639      remove old version of thsice vars advection in pkg/seaice.
640    o in FFIELDS.h:
641      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
642      - make pLoad & sIceLoad always available (but still only used if
643         ATMOSPHERIC_LOADING is #define).
644    o pkg/kpp: replaced _KPP_RL with _RL
645    o bug fixes for vertical diffusivity computations when both KPP and
646        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
647        are no longer updating the vertical diffusivity array
648        (passed as argument) but are (re-) setting those arrays.
649    o pkg/seaice: fix bug in evp solver, while doing that
650      - change (improve?) discretization of stress computations for both
651        cgrid-lsr and evp solver
652      - add a new routine to compute strain rates
653      - the above changes lab_sea results
654      - add no slip conditions for evp solver (off by default), lsr-version
655        may follow
656      - fix exchange for shear at Z-points (does not change lab_sea)
657      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
658        (to force the user to pick a time step since there is not "safe" way
659        of choosing it)
660      - add principal stress diagnostics
661      - rearrange fields for evp a little to avoid having to call a: too many
662        exchanges and b: exchanges for stress trensor components which we do
663        not have.
664      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
665        of evp, complete rewrite for lsr case (latter is does not yet work
666        in all cases)
667    o pkg/kpp: add code to have mixing in shelf ice caverns
668      - add myThid to all kpp routines (long overdue)
669    
670    checkpoint59
671    o pkg/exf:
672      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
673        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
674      - move exf header files from lower_case.h to UPPER_CASE.h ;
675        add missing cvs Header & Name
676      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
677      - add namelist param. selectStressGridPosition, exf_monFreq
678      - retire many _CLIM routines, and remove data.exf_clim
679        + params moved to data.exf
680        + climsst, climsss now handled by exf_set_gen, i.e.
681          climss?period=0 refers to constant field,
682          climss?period=-12 to monthly forcing
683      - split up namelists in data.exf
684    o pkg/seaice:
685      - remove seaice_exch and seaice_exch_uv
686      - remove superfluous exchange of theta
687      - add myThid to seaice_budget_ocean/ice
688      - add new interface for atmospheric wind forcing (C-grid only)
689        + new routine
690        + two new field (taux, tauy for stress over ice)
691        + removed one global field (DAIRN) for C-grid case only
692    o pkg/thsise
693      - 2nd set of modifs for thsice adjoint in conjunction with exf
694    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
695    
696    checkpoint58y_post
697    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
698      vertical diffusivity, similar to that in MOM4; turned on using
699      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
700      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
701    o Added capability for 3D specification of background vertical diffusion
702      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
703      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
704      "data" file that contains the 3D vertical diffusivity coefficients.
705    o ice dynamics (pkg/seaice) with thsice thermodynamics:
706      - add code within pkg thsice to advect & diffuse sea-ice fields
707      similar to (and will replace) what has been added in  seaice_advdiff.F,
708      but: - conserving Mass, Heat & Salt.
709           - better when using non-linear advection scheme (not yet fully tested)
710           - can also be used in atmospheric set-up (for now, only the diffusion).
711    
712    checkpoint58x_post
713    o IO option for global-file compact format:
714      - add options when generating topology (utils/exch2/matlab-topology-generator)
715      - add I/O capability (pkg/mdsio).
716      - adapt utils/matlab/rdmds.m to read this format.
717      for now long-line format not yet supported by pkg/mdsio (& exch2).
718    o shelfice: add a few diagnostics
719    
720    checkpoint58w_post
721    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
722      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
723      (and replace horiVertRatio in NH code).
724      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
725                         and tutorial_plume_on_slope (sensitive to truncation)
726    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
727      directly to drive seaice model (C-grid only)
728    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
729     - reintroduce computation of wind from stress,
730     - compute tau (in exf_bulkformulae.F) from windstress averaged to
731       mass points to avoid tau = 0
732     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
733    o rdmnc.m: make it work with "global" files created with gluemnc
734    o rdmnc.m : some improvements in dealing with singleton dimension
735      (tested on all testreport mnc output files).
736    o genmake2: disable pkg/profiles if netcdf test fails.
737    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
738    o move call to cal_readparms up to make calendar parameters/variable available
739      to all packages
740    
741    checkpoint58v_post
742    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
743      useDynP_inEos_Zc tested.
744    o pkg/exf: changes to properly interpolate/mask/scale initial fields
745    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
746      and portions thereof.  See read_cs.txt for description and examples.
747    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
748      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
749      following the great-circle arc between those 2 points.
750    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
751      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
752    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
753     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
754     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
755     - still needs work (not working with some options ; efficiency to improve)
756       and serious testing.
757     - use this scheme for temperature & salinity in 2 advection test exp.:
758       advect_xy & advect_xz, respectively.
759    
760    checkpoint58u_post
761    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
762    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
763    o testreport: add option "-skipdir" to skip some test.
764    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
765      momentum calculation.
766    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
767    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
768      remove checkpoint.F and the_correction_step.F (no longer used);
769      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
770    o add option (linFSConserveTr) to correct for tracer source/sink due to
771      Linear Free surface
772    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
773    o pkg/thsice: fix reading mnc-pickups
774    
775    checkpoint58t_post
776    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
777    o pkg/mdsio:
778     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
779       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
780       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
781     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
782     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
783       either MDS_READ_FIELD or MDS_WRITE_FIELD )
784     - new S/R (to replace MDSWRITEMETA), which allows to write more
785       informations (variable names, time ...) to meta files.
786     - modify rdmds.m to give back the meta file content.
787    o pkg/diagnostics: change vertical interpolation to be safer, and more
788       flexible (define p-levels to interpolate to in data.diagnostics);
789      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
790       diagnostic pointer.
791    o pkg/seaice: more cleaning up of seaice_growth, added many comments
792    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
793    o fix multi-category seaice:
794     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
795       SEAICE_MULTICATEGORY
796     - fix short wave heat flux
797    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
798       and allow to use EVP solver. Change forward lab_sea: test both EVP
799       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
800    o Initial check-in of lab_sea adjoint
801      (very similar to natl_box_adjoint/code_seaice)
802      * used C-grid and EVP solver
803      * used KPP, GM/Redi
804      * uses inAdExact=.TRUE.
805      * gradient checks fail for both ADM and TLM
806        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
807        f.d. gradients actually seem more problematic than ADM, TLM gradients;
808        issue is related to forward mismatch between g77 an ifort
809    o pkg/seaice: overhaul of thermodynamics
810     - growth.F and groatb.F are replaced by new routine seaice_growth.F
811     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
812     - move a few global fields out of SEAICE.h into seaice_growth.F and
813       make them 2D (FICE/QNETO/ ...)
814     - remove FO (it is the same as QNETO)
815     - introduce a few local fields to avoid modifying external fields such
816       as atemp, etc.
817    
818    checkpoint58s_post
819    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
820      changed exf_set_gen.F so that
821        genperiod=0 means input file is one time-constant field and
822        genperiod=-12 means input file contains 12 monthly means
823    o CG2D: use pre-computed solver main-diagonal (stored in common block);
824      this affects truncation error ; generate new output file for exp. which
825      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
826        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
827        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
828        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
829        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
830        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
831    o start implementation of deep-atmosphere and anelastic formulation
832    o verification: remove 2nd copy of input files and use script "prepare_run"
833      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
834    o mom_common/vecinv/fluxform: fix a few initialisation isssues
835    o profiles: fix for multithreaded case
836    
837    o diagnostics: rename few diags:
838      s/'PRESSURE'/'RCENTER '/g
839      s/'TICE    '/'oceFreez'/g
840      s/'TAUX    '/'oceTAUX '/g
841      s/'TAUY    '/'oceTAUY '/g
842      s/'SWFLUX  '/'oceQsw  '/g
843      s/DIFx/DFxE/g
844      s/DIFy/DFyE/g
845      and add few ocean-forcing diagnostics:
846      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
847    o modifications to pkg/seaice/growth.F and budget.F, which change results of
848      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
849      as actual snow thickness.  It now refers everywhere to effective snow
850      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
851    
852    checkpoint58r_post
853    o modifications to pkg/seaice/growth.F, which change results of
854      lab_sea experiment: fixes pertain to melting snow over open water, to
855      masking EVAP under sea ice, and to using the correct AREA variable for
856      computations of EVAP, PRECIP, HSNOW, and GHEFF
857    o add ability to read bathy, salt, and theta using MNC (off by def)
858    o add flooding algorithm and advection of HSNOW for pkg/seaice;
859      both are turned off by default and do no change any results
860    o seaice advection with pkg/thsice: a step toward the use of non-linear
861      advection scheme, but #ifdef or commented out for now (requires more EXCH).
862    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
863      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
864      in natl_box (affects results @ truncation level: update output.txt)
865    o multi-threading and IO:
866      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
867      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
868        (needed to work with SingleCpuIO): tested in all verif. exp.
869    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
870      affects the results (but none of the verification test uses this scheme).
871    o Adding some pkg/diagnostics capability to pkg/seaice
872      (will certainly be subject to changes)
873    o ctrl: adding new control variables:
874      lwflux, lwdown, evap, snowprecip, apressure, runoff
875    
876    checkpoint58q_post
877    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
878      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
879      high_res_cube configuration by 4% on Columbia.
880    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
881      add (in global_with_exf/code) a version of EXF_INTERP_READ without
882      dynamical allocation (seems to work in multi-threaded).
883    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
884      single CPU io) so that TAF does not have to see EESUPPORT.h
885    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
886    
887    checkpoint58p_post
888    o obcs: stop if obcs is used with useCDscheme = .true.
889    o shelfice:
890     - fix a sign error so that no slip at shelfice interface works
891     - remove stop for combination non-hydrostatic code and shelfice. That does
892       not mean, that the results are correct, but at least they are numerically
893       stable
894    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
895    o added adjoint exch routined for all exch*3d* routines
896      and updated flow directives
897    
898    checkpoint58o_post
899    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
900      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
901    o change controling S/R for writing pickup file (new S/R do_write_pickup)
902      and clean-up reading/writing of pickup files.
903    o fix local version of read/write pickup (NH part) in rotating_tank/code
904    o simplify EXCH interface:
905     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
906     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
907    o added the regrid package
908    o shelfice:
909     - add a simple boundary layer scheme to reduce noise
910     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
911    
912    checkpoint58n_post
913    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
914       local variable (not in common block).
915    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
916      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
917      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
918        to work with SingleCpuIO.
919    o add "_d 0" to real constant of pkg/cfc subroutines ;
920       update exp. cfc_exemple & tutorial_cfc_offline output files.
921    o multi-threading and IO:
922      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
923        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
924      - barrier before and after reading.
925      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
926      - avoid using MDS_WRITELOCAL for LAND pkg output.
927      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
928        common-block variables ; Allows multi-threading with master-thread IO.
929    o change default MAX_NO_THREADS from 32 to 4 ;
930      and stop cleanly when MAX_NO_THREADS is too small.
931    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
932    
933    checkpoint58m_post
934    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
935       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
936    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
937       keep global_ocean.90x40x15 (for AD testing) with former secondary test
938       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
939    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
940        add MITgcm_tutorials (= code + all the tutorials)
941    o ecco, option to compute cost for total ssh (mean+anom)
942    o consistent with addition of ptracer and ssh in pkg/profiles
943    o profiles: adding ptracer and ssh
944    o testreport: change multi-test output-file name
945      (from output.txt.{name} to output.{name}.txt)
946    o profiles: now ok for mutli-tiles case
947    o seaice: add 4 parameters for different advection schemes for area,
948      (effective) seaice thickness, enthalphy, and snow height. Their default
949      is the standard parameter SEAICEadvScheme
950    o calc_gw:
951     - add cosFacU in zonal viscous flux (harmonic.visc.).
952     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
953       of tutorial_plume_on_slope.
954    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
955    o calc_gw: true flux-form, account for horizontal grid spacing.
956      update rotating_tank results, but not plume_on_slope (affected at
957      truncation level, 11 digits).
958    
959    checkpoint58l_post
960    o calc_gw:
961     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
962     - remove side-drag for now (need to fix it); update plume_on_slope results.
963     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
964    o commit code to make SST/SSS weights spatially variable
965      (based on either variable in-situ or variable initial T/S weights)
966    o pkg/ecco:
967      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
968        now based on horizontally varying weights wthetaLev, wsaltLev
969      * cost_averagesflags now returns year indices in addition to day, month
970      * sflux balance is performed on annual basis
971        (sflxumm, sfluxmm2, bal_sfluxmm)
972      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
973        including separate counting and multipliers
974    o pkg/rbcs
975      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
976    
977    checkpoint58k_post
978    o testreport:
979     - always build in dir. "build" (if not there, mkdir build instead of building
980       & running in input)
981     - run in dir run (if it exists), in build otherwise.
982     - call prepare_run (if input/prepare_run exists)
983     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
984    o pkg/exf modifications to interpolation and rotation routines for more
985       reasonable treatment of North Pole singularity: for tracers North Pole
986       value is set to northernmost zonal-mean value, for zonal velocity it is
987       set to zero, and for meridional velocity it is set to northernmost value.
988    o pkg/exf/exf_check_range.F
989     - add tile index to diagnostics and move stop statement to the very
990       end of the routine.
991    o pkg/diagnostics: (diagnostics_main_init.F)
992      define title of isomorphic variables according to the current config.
993    o pkg/thsice with pkg/seaice dynamics:
994    - fix domain of computation (interior only, required for exf) and do exchanges
995    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
996    o towards a standard way of dealing with multi-threading in MONITOR
997      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
998    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
999       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1000    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1001    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1002    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1003       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1004    o tracer advection:
1005     - clean-up and simplify calc_common_factors.F
1006     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1007       advection subroutine (but still not used within DST advection S/R)
1008    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1009    
1010    checkpoint58j_post
1011    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1012      from file (collects calls previously in FORWARD_STEP)
1013    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1014    o adjoint store dir. adjusted accordingly
1015    o genmake2
1016      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1017    
1018    checkpoint58i_post
1019    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1020      on wind stress (SEAICEstressFactor defaults to 1.)
1021    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1022      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1023    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1024      on CS-grid: no longer loosing mass.
1025    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1026    o pkg/ggl90: fix sloppy output and fix a bug
1027    o pkg/seaice: added SEAICEuseEVPpickup parameter
1028      - Set to false in order to start EVP solver with
1029        non-EVP pickup files when using SEAICEuseEVP
1030      - fix sign error in diffusion in seaice_calc_rhs
1031    
1032    checkpoint58h_post
1033    * Modifications for bottom topography control
1034      o replace hFacC by _hFacC at various places
1035      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1036      o add non-self-adjoint cg2d_nsa
1037      o update autodiff support routines
1038      o re-initialise hfac after ctrl_depth_ini
1039      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1040    * Adding verification for 5x5 box (4-layer) bottom topography control
1041    
1042    checkpoint58g_post
1043    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1044       used for mean seasonal cycle, mean diurnal cycle); add an example
1045       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1046    o pkg/ggl90:
1047      - add parameter (minimum surface kinetic energy)
1048      - fix bug (avoiding division by zero)
1049    o couple pkg/thsice to pkg/seaice:
1050      - modify advection in seaice to accomodate new scalar fields to be advected
1051      - only muliDimAdection scheme work with seaice/thsice
1052      - mapping of thsice-variables to seaice-variables, back and forth
1053      - does not break the verification experiments, but does not give the
1054        desired results either
1055    o pkg/seaice
1056      - make (default) second order advection a bit less confusing?
1057    
1058    checkpoint58f_post
1059    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1060      to pkg/seaice):
1061      - new routines thsice_map_exf and thsice_get_exf provide the interface
1062      - add an additional formal parameter to thsice_solve4temp
1063    o pkg/exf:
1064      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1065      - correct Stefan-Boltzmann constant
1066      - new parameter for longwave surface emittance
1067      - separate some stuff from exf_bulkformulae into new routines  
1068        exf_radiation, exf_wind
1069      - add new parameters and constants: longwave emissivity for ocean, ice
1070        and snow, evaporation parameters over ice
1071      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1072        either wind from stress or stress from wind
1073    o pkg/thSIce:
1074    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1075    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1076       and THSICE_CALC_THICKN
1077    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1078    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1079      to make debugging easier.
1080    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1081    o pkg/bulk_force:
1082      - clean-up comments and parameters ;
1083      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1084    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1085      generate new output for test-experiment: aim.5l_cs.thSI
1086    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1087      testreport accordingly
1088    
1089    checkpoint58e_post
1090    o SEAICE_CGRID adjoint done
1091    o R_STAR adjoint implemented.
1092      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1093      * need to sort out init. of h0facc, etc.
1094    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1095      to be able to use it in pure forward.
1096    
1097    checkpoint58d_post
1098    o upgrade simple test-experiment to tutorial example:
1099     step.1: duplicate the experiment and (step.2) will remove the old copy.
1100      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1101      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1102      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1103      tutorial_global_oce_biogeo    <- copy of dic_example
1104      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1105      tutorial_plume_on_slope       <- copy of plume_on_slope
1106      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1107      tutorial_global_oce_optim     <- empty for now (David ?)
1108      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1109     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1110    o correct a sign problem in cost_scat.F
1111    o obcs and ptracers: fix boundary conditions for advections schemes
1112      with larger stencil
1113    o thsice adjoint: start
1114    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1115      completeness
1116    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1117      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1118    o ptracers adjoint:
1119      * avoid extensive recomputatations
1120      * fix missing re-init. of gptr (missed by TAF)
1121    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1122      me to turn off the excessive output to STDOUT that this package produces
1123    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1124      and add those terms in Vector-Invariant formulation.
1125    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1126      if the control period (xx_hfluxperiod etc) is 0
1127    o in profiles pkg, clean routines and fix details
1128    o in ecco pkg, reading ssh data:
1129      fix problem in case the model does not start at iter0=0
1130    o fix mnc-pickup/restart for ptracers
1131    o new package prifiles:
1132      code to compute profile-based cost by Gael Forget
1133      (modifs in ecco, ctrl, autodiff)
1134    o Benign bug fix in initialization (spotted by M. Mazloff) of
1135      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1136    
1137    checkpoint58c_post
1138    o adjoint: finish NLFS adjoint and provide reference output in
1139      verification/global_ocean.90x40x15/results_ad_nlfs
1140    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1141      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1142      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1143      with SEAICE_CGRID defined.
1144    o move calendarDumps from "data" to "data.cal" and clean-up the code
1145      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1146    o add useEXF & useCAL flags (for now, set in hard-coded way)
1147    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1148      (were missing in NH mode, and wrong in quasihydrostatic mode).
1149      waiting for Chris updated version of calc_gw to add those CALLs.
1150    o fix bug in quasihydrostatic S/R ;
1151      add a test for this option: global_ocean.90x40x15.qshyd
1152    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1153      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1154    o add on/off flag useOffLine for package OFFLINE
1155    o seaice:
1156      - modify advection so that it works also on the C-grid
1157      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1158        problem in multi-tile runs with C-grid
1159      - add flags for clipping ice velocities and/or masking solver forcing
1160      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1161        C-grid solver
1162      - added a few comments to seaice_diffusion.F
1163      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1164        are now exclusive)
1165      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1166        required re-ordering the code a little:
1167       + make DAIRN global variable (defined in SEAICE)
1168       + move computation of the viscosities eta and zeta into a new separate
1169         routine (because I need to recompute them in seaice_ocean_stress.F)
1170    
1171  checkpoint58b_post  checkpoint58b_post
1172  o AIM+thSIce: fix sign of Short-Wave through the Ice ;  o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1173    update output.txt of exp. aim.5l_cs.thSI    update output.txt of exp. aim.5l_cs.thSI

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