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revision 1.638 by heimbach, Thu Mar 23 19:59:59 2006 UTC revision 1.990 by dfer, Fri May 9 22:39:42 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 Freshen up a bit hs94.1x64x5, notably:
8      remove rotationPeriod and tRef=5*0. (adjoint only), and add exactConserv=.TRUE.
9    o pkg/generic_advdiff:
10      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
11      applies to files where Temperature & Salinity 2nd Order moments are used.
12    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
13      this uses a dynamically allocated internal state data structure
14      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
15      and requires a fortran 90 compiler
16    
17    checkpoint59q
18    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
19       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
20    o Refresh tutorial_global_oce_biogeo, notably:
21      - change bathymetry (put back seamounts in ACC, use hFacs)
22      - change EOS (POLY3 --> JMD95Z)
23      - use Bryan-Lewis vertical diffusivity
24      - use multidimensional advection
25      - remove old virtual virtual in dic pkg, now done through ptracer pkg
26      - change a couple of parameters in dic pkg
27    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
28    o pkg/obcs: change default to OBCSfixTopo = .true.,
29      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
30      - replace "debugMode" with "debugLevel .GE. debLevB"
31    o implementation of TAF directives for gchem,cfc,dic
32    o remove "exp5" (replaced by tutorial_deep_convection).
33    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
34      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
35      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
36      --> changes results in exp4, seaice_obcs
37    o tutorial_deep_convection :
38      update the set-up and increase resolution and domain size ; start
39      from pseudo initial conditions = output at t=120mn in order to see
40      something happening when running testreport.
41    o pkg/seaice: add os7mp as an advection scheme
42                  add check for advection schemes
43                  add a flag for restoring T and S underneath sea ice
44    o pkg/my82: add netcdf-support and diagnostics
45    o thsice pkg:
46      - Now hsMax limits snow height by turning it into ice following
47        flooding scheme (and now conserving energy)
48      - Slight rewriting of the formula in thsice_calc_thick.F
49      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
50      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
51    
52    checkpoint59p
53    o gchem / dic / cfc :
54      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
55      - add new parameter files: "data.dic" & "data.cfc" ;
56      - various re-arrangement in initialisation & header file ;
57      - fix tutorial_global_oce_biogeo for multi-threaded test.
58    o pkg/dic: test for "pickup_dic" file when restarting ;
59      if no pickup-file, can restart with a re-initialised pH (same as it did
60      before) providing pickupStrictlyMatch is set to False.
61    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
62      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
63    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
64      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
65    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
66     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
67       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
68    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
69       scheme to use for vorticty-term ;
70     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
71       (with default selectVortScheme, return to original discretisation)
72     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
73    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
74    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
75      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
76      also fix diagnostics VISCAHW & VISCA4W.
77    
78    checkpoint59o
79    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
80    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
81      move a few statemens out the main loop into separate loops
82    o pkg/shelfice:
83      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
84        (kg/m^2/s), does not break tests, because in verification/isomip,
85        rhoConstFresh=rhoConst (by accident)
86      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
87      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
88        new file model/src/seawater.F, so that they are available for all pkgs.
89      - convert potential temperature into in-situ temperature. This changes the
90        isomip tests => update tests
91    o add a flag writePickupAtEnd (default=true) to be able to suppress
92      writing a pickup at the last timestep
93    o tools/mpack-1.6 :
94      - disable automake (not working) and autoconf (not needed).
95      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
96        also cleaner with much less compilation warnings.
97    o pkg/profiles:
98      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
99      (for "less than 32 characters name" compiler requirement)
100    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
101      conditions that have a different sampling frequency than S/T/U/V obcs
102    o pkg/diagnostics (stats-diags):
103      - fix global Min/Max in case 1 processor get only empty tiles
104    o genmake2: replace (4 times)
105         make genmake_tc_1.o >> genmake_warnings 2>&1
106      with
107         COMM="$CC $CFLAGS -c genmake_tc_1.c"
108         echo $COMM >> genmake_warnings
109         $COMM >> genmake_warnings 2>&1
110      to make genmake2 always see the value of CC as specified in the optfile.
111    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
112      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
113      - modify verification advect_cs test to test SOM-advection on CS-grid.
114    o pkg/ctrl:
115      - Rewrite of ctrl_map_ini_ecco.F,
116        introducing a generic routine (ctrl_map_ini_gen.F).
117      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
118    
119    checkpoint59n
120    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
121      number in dedicate array "hdiag":
122      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
123        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
124      - many small changes (integer format) for large number of diagnostics
125      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
126        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
127    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
128      usingSphericalGrid, this allows to define the rotated grid coordinates
129      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
130      geographical coordinates according to the inverse of the rotation defined
131      by the Euler angles, so that Coriolis parameter and online-interpolation by
132      exf works with the geographical coordinates on XC/YC/XG/YG.
133      Naturally, this feature does not work with all packages, so some
134      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
135      profiles), because there the coordinates are assumed to be regular
136      spherical grid coordinates.
137    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
138      - introduce isopycnal diffusion coefficient control.
139    o tools/adjoint_options:
140      - additional control vector components.
141    o pkg/mnc: have mnc create marginally meaning full coordinate variables
142      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
143    o pkg/mypackage:
144      - add example of read/write pickup for state-var ;
145      - add entry points to the main code for state-vars diags & write-pickup.
146    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
147      transitions for useExfYearlyFields
148      - add new subroutine that determines the file to read from for
149        use*YearlyFields = .TRUE. and .FALSE.
150      - add a verification experiment to global_with_exf that tests
151        useExfYearlyFields with USE_EXF_INTERPOLATION defined
152    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
153      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
154      subroutines (which could be generated from a template, because they are
155      almost identical), for now they are included in obcs_prescribe_read.F for
156      simplicity
157    o pkg/exf:
158      - add a little more diagnostic to exf_interp_read (in analogy to
159        mds_read_field, can be turned off with debugLevel < debugLevA=1)
160      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
161        ugly but fast by unrolling short inner loops, inserting a unroll=8
162        directive in routine lagran, and splitting a loop and making do while the
163        outermost loop (the latter requires the intoduction of index arrays)
164    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
165    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
166      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
167    o verification/seaice_obcs: updated for restart test and latest options
168    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
169      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
170      for now this is only available for the C-grid code and also within
171      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
172    
173    checkpoint59m
174    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
175      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
176    o gad_som : fix flux output (& diagnostics) to have same units as other  
177      advection scheme fluxes (was previously multiplied by deltaT).  
178    o added verification/seaice_obcs both to test seaice open boundaries
179      and to provide an example matlab scrpt for generating them
180    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
181    o pkg/salt_plume: clean up salt_plume_frac.F to
182      remove redundancy in PlumeMethod 1 and 4
183    o pkg/kpp: added saltplume diagnostics
184    o pkg/obcs and pkg/seaice:
185      - do not set uice and vice to zero when OB*icefile are unspecified
186      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
187      - moved seaice tracer obcs after call to seaice_growth
188    o pkg/salt_plume: added various options for salt plume depth
189      criterion and for vertical distribution of the salt
190    
191    checkpoint59l
192    o pkg/ptracers: new version of ptracers pickup:
193      read meta file and write only fields which are needed to restart.
194      ( same logic as main pickup file ; also using pickupStrictlyMatch )
195    o pkg/seaice:
196      - add timescale for melting due to warm mixed layer as a means of
197        setting SEAICE_availHeatFrac more conveniently
198      - add a CPP-flag/runtime parameter check for flooding algorithm
199      - reformulated availHeat in seaice_growth.F to be independent of AREA
200    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
201      unit changes
202    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
203    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
204      SX vector computer.
205    o pkg/seaice:
206      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
207        seaice forcing fields can now be read only through pkg/exf
208      - removed some unused halos
209    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
210    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
211      or U/VICE from U/VWIND before computing U/VSTRESS
212    
213    checkpoint59k
214    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
215      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
216    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
217      all experiments pass when compile with un-initialised var. checking option.
218    o added pkg/salt_plume
219    o script to test restart (for now, in MITgcm_contrib/jmc_script)
220    o pkg/seaice: new read/write pickup version.
221      read meta file and write only fields which are needed to restart.
222      ( same logic as main pickup file ; also using pickupStrictlyMatch )
223    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
224    o lab_sea.hb87: modify the domain & update output.hb87.txt :
225      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
226      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
227      process. Fixed here by closing the domain at the Northern boundary.
228    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
229    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
230      a set of consecutive levels in/from a 3-D array.
231    o pkg/ptracers:
232      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
233      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
234    
235    checkpoint59j
236    o in pkgs: dic, obcs, offline, rbcs:
237      standard way to compute coeff. for time interpolation between 2 time reccords
238      which retains full precision (& make results less dependent on compiler).
239      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
240    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
241      packages instead of reading ice cover and wind speed separately
242    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
243     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
244      to allow to compile customized code before the update)
245    o cleaning-up:
246      - fix CPP instruction syntax in pkg/obcs
247      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
248        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
249      - fix some threads issue in IO parts.
250    o pkg/dic:
251      - add tons of "_d 0" (--> much better testreports !)
252       and then update outputs of tutorial_global_oce_biogeo
253    o pkg/mom_fluxform:
254      add a special version of momentum advection intended to conserve momentum
255      next to a bathymetry step or a coastline edge. (default = off = #undef)
256    o new read/write pickup version:
257      - for now, only implemented for main (mdsio) pickup file.
258      - write out only what is needed to restart; merge pickup_nh , pickup_ph
259        and main pickup together.
260      - read meta file; read only what is needed to restart; stop if a field
261        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
262        if it make sense (even if the restart is not perfect).
263      - if no meta file, assume that pickup to read corresponds exactly to
264        a pickup that would currently be written.
265      - read pickup written in the old format (until checkpoint59i) if it
266        recognizes an old meta file (no field-list).
267      - add a meta file in exp. which starts from a pickup: 2 cases:
268        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
269         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
270        b) a meta file describing the content of the associated pickup file
271         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
272    o pkg/mdsio & pkg/rw:
273      - new routine to read a meta file ; new set of routine to read
274        Multiple-fields file (with meta file).
275    o added open boundary conditions capability for seaice
276        HSNOW, HSALT, UICE, and VICE
277    
278    checkpoint59i
279    o adjoint:
280      * fix multiDimAdvection adjoint
281        (partial recomputation problem by TAF for fVerT(:,:,kDown)
282        and comlev1 size definition (maxpass vs. max. number of tracers)
283      * verification/global_ocean.90x45x15 adjoint now tests
284        NLFS and multiDimAdvection using DST3 (=30)
285      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
286    o pkg/kpp: add "_d 0" to real constant (if missing);
287      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
288      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
289    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
290      for internal parameters related to restart process (formerly from PARAMS.h)
291      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
292    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
293      as argument. (only atm2d & obcs write_pickup have not yet been updated)
294    o pkg/monitor:
295      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
296      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
297      - account for deep Atmosphere factor and density factor (anelastic)
298    o added open boundary conditions capability for seaice HEFF and AREA
299    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
300      thermodynamics
301      - requires a little reorganization, which affects the testreport results
302        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
303        so that now the conservative form is tested
304      - add a few comments
305    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
306    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
307    o add new diagnostics to seaice: advective, diffusive fluxes (only for
308      multidim-advection, for scheme 2 they are not filled) and transports,
309      thermodynamic growth rates
310    o change units of EmPmR (inside the code, + within coupling interface)
311      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
312      Affects results @ truncation level (cg2d match) and update output of
313       experiments: lab_sea(6), global_ocean.90x40x15(10),
314      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
315      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
316      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
317      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
318    
319    checkpoint59h
320    o pkg/exf:
321      - improve vectorization by moving if-statement out of loops in
322        exf_mapfields, exf_radiation
323      - exf_bulkformulae.F: introduce 2D fields and vectorize code
324    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
325    o testreport:
326      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
327        monitor & update offline_exf_seaice exp. output.
328      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
329    o pkg/seaice:
330      - bug fix in the evp solver: boundary conditions were affected be
331        masking of zMax/zMin (changes results)
332      - minor bug fix in boundary conditions in seaice_calc_strainrates
333        (changes results for no_slip)
334      - seaice_lsr.F: make interpolation of eta dependent on boundaries
335      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
336      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
337        stress formulation and no-slip boundary conditions
338    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
339      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
340    o pkg/seaice: a first HSALT time stepping equation has been checked in
341    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
342      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
343      without requiring DO-IF statements
344    o pkg/thsice:
345      use continuous power-law function for partition of energy between lateral
346      melting/freezing and thinning/thickening ; old code using step function
347      still available with #undef THSICE_FRACEN_POWERLAW
348      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
349    o testreport: change AD testing : check against results/output_adm.txt
350      using same scripts as for forward test.
351    
352    checkpoint59g
353    o adjoint testing: in preparation for changing testreport:
354      - output format: cost and grad written on separated lines
355      - ad output results in directory "results" (instead of "results_ad")
356    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
357    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
358    o pkg/ecco: allow user defined cost function contributions
359    o testreport:
360      Allow to choose (per experiment) the list of tested output variables
361       and the main variable (used to issue a pass/FAIL ) ;
362      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
363      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
364      Also modify printing of summary:
365       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
366       b) echo the list of tested variables in the individual summary.txt of
367          each experiment.
368    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
369      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
370      (but still depend on the tile decompostion of the domain).
371    o pkg/seaice: change a discretization detail to make the B-grid code
372      "more symmetric". This change is likely to remove all "ridges/leads" that
373      where quasi-aligned with the grid in B-grid solutions. It may also be
374      the solution to the stress coupling issues with the B-grid.
375    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
376      remove .cvsignore from input dir. (since testreport no longer run here).
377    o pkg/thsice:
378     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
379     - fix reshaping of sea-ice just after advection:
380       melt all the ice only if ice-volume is too small.
381     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
382       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
383     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
384    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
385      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
386    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
387      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
388      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
389      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
390      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
391      -> update output.txt
392    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
393     this affects truncation error: -> update output.txt of exp:
394      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
395      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
396    
397    checkpoint59f
398    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
399    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
400      a bounded range (in forward mode)
401    o pkg/ecco, ctrl, autodiff and mom_common:
402     internal parameter controls, completements of implementations
403    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
404    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
405      (not seem any difference in testing results).
406    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
407       at face corners.
408    o pkg/generic_advdiff:
409     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
410      loop range indices for computing vertical advection tendency
411      and do the calculation in the interior only (no overlap) ;
412      for now, only implemented for SOM advection (to save CPU time).
413     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
414    o exch2 adjoint
415      First set of changes:
416      - add exch2 hand-written adjoint templates
417      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
418        This will require cleanup in pkg/autodiff/*.F
419        (changed routines currently kept separate in verif. code/)
420      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
421        that used to hide exch2 or cubed-sphere specific code
422        (commented via 'cph-exch2')
423    o pkg/seaice
424      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
425    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
426       output of global_ocean.cs32x15.thsice .
427    
428    checkpoint59e
429    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
430      for B-grid vector (not yet tested) and C-grid vector (<- only used
431      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
432    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
433      (#ifdef ALLOW_SALT_PLUME)
434    o gather_2d/scatter_2d: removed halo regions
435    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
436      scheme and the corresponding test case (under front_relax dir). For now,
437      only available with Skew-flux form and not yet tested in realistic set-up.
438      adjoint: store directives updated, but gradient checks deteriorated,
439      so maybe GM/Redi adjoint is now broken.
440    o seaice adjoint
441      * add AREA, HEFF, HSNOW as control variable
442        (should not change lab_sea results)
443      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
444    o pkg/seaice:
445      * added computation of saltFlux in seaice_growth;
446        For time being, sea ice salinity is assumed constant
447        contribution of snow flooding to freshening of sea ice is neglected.
448        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
449        defaults to 0.0 in order to maintain backward compatibility.
450        Typical values for SEAICE_salinity are 4 to 10 g/kg.
451      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
452      * added SEAICE_availHeatFrac, which specifies fraction of surface level
453        heat content used to melt or grow ice
454      * commented out cap of HICE: it helps keep ice thinner
455      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
456      * applied OBCS T/S mask to HEFFM sea ice mask
457    
458    checkpoint59d
459    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
460     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
461     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
462    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
463     and change default value of parameter "GM_Small_Number";
464     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
465       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
466       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
467    o pkg/ecco: cost function when applying pkg/smooth to controls
468    o pkg/ctrl: add forcingPrecond run time parameter
469    o pkg/seaice:
470     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
471     - fix bug in metric terms of u-equation in LSR solver (implicit part),
472       changes verification/lab_sea
473     - rearrange implicit part of u-equation in LSR solver to make it easier to
474       read, understand, and debug. This causes changes at the truncation level.
475     - fix (serious) bug in the boundary conditions (sign error in the implicit
476       part) of the LSR solver. Changes all LSR results.
477     - fixed problem with HSNOW initialization to avoid thick snow when AREA
478       is initilized with small values - does not change lab_sea results.
479     - added HsnowFile initialization capability
480    o pkg/smooth: addition to model/src and pkg/ctrl so allow
481     initialization of pkg/smooth and application to control vector
482    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
483    o dependencies: pkg/profiles requires pkg/cal
484    o pkg/profiles:
485     - added option ALLOW_PROFILES_GENERICGRID
486         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
487         that interpolation information (grid points and coefficients) is provided
488         within the netcdf input files.
489         -> sample matlab scripts can be found in MITgcm_contrib/gael
490         that allow you to prepare netcdf input files.
491     - also modified: cleaner include statements, cleaner error print statements,
492       cleaner stops when error, and more tests of the netcdf input files consistency.
493    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
494    o pkg/seaice:
495     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
496       requires a new routine: seaice_diagnostics_fill.F
497     - make sure that seaice does not move if not forced (pressure replacement
498       method, Hibler and Ip, 1995), changes results
499     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
500     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
501       It is turned off by default (=-1.), because it changes the results.
502     - make it possible to read AREA from a file, too.
503    
504    checkpoint59c
505    o add S/R and diagnostics for oceanic mixed-layer depth
506    o move GMRedi call after all vertical mixing schemes (including KPP)
507    o pkg/thsice:
508     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
509      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
510    o pkg/obcs:
511     - bug fix for balance code
512    o pkg/seaice:
513      - allow values of SEAICE_elasticParm > 1
514      - add new parameter SEAICE_evpTauRelax as an alternative
515        to SEAICE_elasticParm
516      - make lsr boundary conditions free slip (by default), changes result
517      - add code for no slip boundary conditions for lsr
518      - set minimum of zeta to zero (and not 4e8) (changes results)
519      - add a cap on AREA after advecting AREA if seaice_growth is not called
520    o change calculation of Visbeck K:
521      - no longer depend on tapering scheme; instead, compute slope (limited
522        by GM_maxSlope). this is equivalent to what was comuted before with
523        clipping or linear tappering.
524      - fix vertical averaging (wrong by 1/2 level)
525      - leave the old version (but will not be maintained) within
526        #ifdef OLD_VISBECK_CALC / #endif
527      - update output of exp. ideal_2D_oce
528    o change error catch in calc_r_star to improve vectorization
529    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
530      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
531    o adjoint:
532      Re-organized adjoint checkpointing according to Matt Mazloff
533      (but with modifs/completions/cleanups)
534      Storing is now bundled into large arrays to optimized I/O
535      (and second step in cleanup of the_main_loop)
536    
537    checkpoint59b
538    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
539      - export/import (between ocean & coupler) fields needed for ocean DIC.
540    o pkg/seaice:
541      - get rid of three more exchanges seaice_calc_viscosities (required
542        different loop boundaries in seaice_lsr and seaice_ocean_stress)
543      - bug fix in seaice_ocean_stress (update of lab_sea required)
544      - reduce loop boundaries to necessary minimum also in seaice_evp
545      - go back to the old way of computing deltaC/Z as the adjoint likes that
546        better
547    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
548      passive tracer to an Age Tracer) + update output.txt
549    o pkg/exf:
550      - implement A-grid / C-grid selection for wind-stress input files.
551      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
552      for now, in exf_bulk_largeyeager04.F only :
553      - change implementation for case where windspeed + 2. components wind-stress
554        are read-in. AND use rhoConstFresh to convert evap.
555    o pkg/seaice:
556      - use correct EXCH_UV for wind-forcing (on A-grid).
557      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
558        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
559    o pkg/exf:
560      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
561      EXF_INTERPOLATION:
562      - merge global_with_exf/code version of exf_interp_read.F
563        to the main code ;
564      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
565        reading the file ; Important: This options needs to be defined to recover
566        previous code.
567        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
568      - no longer loose real*8 precision along the way when using exf_iprec=64.
569    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
570      - change discretisation of evp-solver in order to avoid another exchange
571        (changes lab_sea) and clean up a little
572      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
573        help the adjoint (this also changes the results slightly)
574      - add a few "_d 0" where they had been missing in seaice_evp.F
575      - cleaning up: remove unused seaice_calc_rhs.F
576    o pkg/exf: some cleaning-up:
577      - change various "constants" into runtime parameters
578      - cleaned-up Large&Yeager04 routine which should eventually
579        replace exf_bulkformulae.F (changed names of S/R and CPP)
580        and merged various ALLOW_ATM_WIND options
581     only used with thsice pkg (in thsice_get_exf.F):
582      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
583        which are used when useStabilityFct_overIce=TRUE (= the default)
584      - change default values of ice & snow emissivity and scale downward LW
585        by ice & snow emissivity.
586    o pkg/thsice:
587     fix few little problems, in thsice_calc_thickn.F:
588      - growth vertically (and not laterally) if iceFrac == iceMaskMax
589      - melt only laterally if hIce < hThinIce (as the comments say)
590      and in thsice_extend.F:
591      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
592      - start to form ice as soon as the minimum ice-volume is reachable.
593     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
594      and cpl_aim+ocn
595    o pkg/kpp
596     - move computation of surface related input fields to KPP into a new
597       subroutine kpp_forcing_surf.F
598     - remove wrong (within bi,bj loops) EXCH calls.
599     - little cleaning (add argument myThid in last position, cvs header ...)
600     - for now, fix conservation problem by exchanging KPPviscAz (may not
601       be the best fix)
602    o pkg/seaice
603     - check for inconsistent evp parameter/cpp-flag combination
604     - remove leftover errIO flat for obsolete name list error handling
605    o OpenAD
606     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
607    
608    checkpoint59a
609    o pkg/seaice: some parameter clarifications and a little bit of clean up
610    o pkg/thsice: rename run-time parameters:
611       himin       -> hIceMin
612       himin0      -> hThinIce
613       hihig       -> hThickIce
614       i0          -> i0swFrac
615       transCoef   -> bMeltCoef
616       frac_energy -> fracMelting
617      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
618       with default values (for now) that do not change the results.
619      remove old version of thsice vars advection in pkg/seaice.
620    o in FFIELDS.h:
621      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
622      - make pLoad & sIceLoad always available (but still only used if
623         ATMOSPHERIC_LOADING is #define).
624    o pkg/kpp: replaced _KPP_RL with _RL
625    o bug fixes for vertical diffusivity computations when both KPP and
626        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
627        are no longer updating the vertical diffusivity array
628        (passed as argument) but are (re-) setting those arrays.
629    o pkg/seaice: fix bug in evp solver, while doing that
630      - change (improve?) discretization of stress computations for both
631        cgrid-lsr and evp solver
632      - add a new routine to compute strain rates
633      - the above changes lab_sea results
634      - add no slip conditions for evp solver (off by default), lsr-version
635        may follow
636      - fix exchange for shear at Z-points (does not change lab_sea)
637      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
638        (to force the user to pick a time step since there is not "safe" way
639        of choosing it)
640      - add principal stress diagnostics
641      - rearrange fields for evp a little to avoid having to call a: too many
642        exchanges and b: exchanges for stress trensor components which we do
643        not have.
644      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
645        of evp, complete rewrite for lsr case (latter is does not yet work
646        in all cases)
647    o pkg/kpp: add code to have mixing in shelf ice caverns
648      - add myThid to all kpp routines (long overdue)
649    
650    checkpoint59
651    o pkg/exf:
652      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
653        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
654      - move exf header files from lower_case.h to UPPER_CASE.h ;
655        add missing cvs Header & Name
656      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
657      - add namelist param. selectStressGridPosition, exf_monFreq
658      - retire many _CLIM routines, and remove data.exf_clim
659        + params moved to data.exf
660        + climsst, climsss now handled by exf_set_gen, i.e.
661          climss?period=0 refers to constant field,
662          climss?period=-12 to monthly forcing
663      - split up namelists in data.exf
664    o pkg/seaice:
665      - remove seaice_exch and seaice_exch_uv
666      - remove superfluous exchange of theta
667      - add myThid to seaice_budget_ocean/ice
668      - add new interface for atmospheric wind forcing (C-grid only)
669        + new routine
670        + two new field (taux, tauy for stress over ice)
671        + removed one global field (DAIRN) for C-grid case only
672    o pkg/thsise
673      - 2nd set of modifs for thsice adjoint in conjunction with exf
674    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
675    
676    checkpoint58y_post
677    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
678      vertical diffusivity, similar to that in MOM4; turned on using
679      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
680      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
681    o Added capability for 3D specification of background vertical diffusion
682      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
683      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
684      "data" file that contains the 3D vertical diffusivity coefficients.
685    o ice dynamics (pkg/seaice) with thsice thermodynamics:
686      - add code within pkg thsice to advect & diffuse sea-ice fields
687      similar to (and will replace) what has been added in  seaice_advdiff.F,
688      but: - conserving Mass, Heat & Salt.
689           - better when using non-linear advection scheme (not yet fully tested)
690           - can also be used in atmospheric set-up (for now, only the diffusion).
691    
692    checkpoint58x_post
693    o IO option for global-file compact format:
694      - add options when generating topology (utils/exch2/matlab-topology-generator)
695      - add I/O capability (pkg/mdsio).
696      - adapt utils/matlab/rdmds.m to read this format.
697      for now long-line format not yet supported by pkg/mdsio (& exch2).
698    o shelfice: add a few diagnostics
699    
700    checkpoint58w_post
701    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
702      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
703      (and replace horiVertRatio in NH code).
704      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
705                         and tutorial_plume_on_slope (sensitive to truncation)
706    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
707      directly to drive seaice model (C-grid only)
708    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
709     - reintroduce computation of wind from stress,
710     - compute tau (in exf_bulkformulae.F) from windstress averaged to
711       mass points to avoid tau = 0
712     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
713    o rdmnc.m: make it work with "global" files created with gluemnc
714    o rdmnc.m : some improvements in dealing with singleton dimension
715      (tested on all testreport mnc output files).
716    o genmake2: disable pkg/profiles if netcdf test fails.
717    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
718    o move call to cal_readparms up to make calendar parameters/variable available
719      to all packages
720    
721    checkpoint58v_post
722    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
723      useDynP_inEos_Zc tested.
724    o pkg/exf: changes to properly interpolate/mask/scale initial fields
725    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
726      and portions thereof.  See read_cs.txt for description and examples.
727    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
728      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
729      following the great-circle arc between those 2 points.
730    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
731      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
732    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
733     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
734     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
735     - still needs work (not working with some options ; efficiency to improve)
736       and serious testing.
737     - use this scheme for temperature & salinity in 2 advection test exp.:
738       advect_xy & advect_xz, respectively.
739    
740    checkpoint58u_post
741    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
742    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
743    o testreport: add option "-skipdir" to skip some test.
744    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
745      momentum calculation.
746    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
747    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
748      remove checkpoint.F and the_correction_step.F (no longer used);
749      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
750    o add option (linFSConserveTr) to correct for tracer source/sink due to
751      Linear Free surface
752    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
753    o pkg/thsice: fix reading mnc-pickups
754    
755    checkpoint58t_post
756    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
757    o pkg/mdsio:
758     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
759       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
760       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
761     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
762     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
763       either MDS_READ_FIELD or MDS_WRITE_FIELD )
764     - new S/R (to replace MDSWRITEMETA), which allows to write more
765       informations (variable names, time ...) to meta files.
766     - modify rdmds.m to give back the meta file content.
767    o pkg/diagnostics: change vertical interpolation to be safer, and more
768       flexible (define p-levels to interpolate to in data.diagnostics);
769      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
770       diagnostic pointer.
771    o pkg/seaice: more cleaning up of seaice_growth, added many comments
772    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
773    o fix multi-category seaice:
774     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
775       SEAICE_MULTICATEGORY
776     - fix short wave heat flux
777    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
778       and allow to use EVP solver. Change forward lab_sea: test both EVP
779       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
780    o Initial check-in of lab_sea adjoint
781      (very similar to natl_box_adjoint/code_seaice)
782      * used C-grid and EVP solver
783      * used KPP, GM/Redi
784      * uses inAdExact=.TRUE.
785      * gradient checks fail for both ADM and TLM
786        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
787        f.d. gradients actually seem more problematic than ADM, TLM gradients;
788        issue is related to forward mismatch between g77 an ifort
789    o pkg/seaice: overhaul of thermodynamics
790     - growth.F and groatb.F are replaced by new routine seaice_growth.F
791     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
792     - move a few global fields out of SEAICE.h into seaice_growth.F and
793       make them 2D (FICE/QNETO/ ...)
794     - remove FO (it is the same as QNETO)
795     - introduce a few local fields to avoid modifying external fields such
796       as atemp, etc.
797    
798    checkpoint58s_post
799    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
800      changed exf_set_gen.F so that
801        genperiod=0 means input file is one time-constant field and
802        genperiod=-12 means input file contains 12 monthly means
803    o CG2D: use pre-computed solver main-diagonal (stored in common block);
804      this affects truncation error ; generate new output file for exp. which
805      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
806        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
807        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
808        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
809        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
810        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
811    o start implementation of deep-atmosphere and anelastic formulation
812    o verification: remove 2nd copy of input files and use script "prepare_run"
813      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
814    o mom_common/vecinv/fluxform: fix a few initialisation isssues
815    o profiles: fix for multithreaded case
816    
817    o diagnostics: rename few diags:
818      s/'PRESSURE'/'RCENTER '/g
819      s/'TICE    '/'oceFreez'/g
820      s/'TAUX    '/'oceTAUX '/g
821      s/'TAUY    '/'oceTAUY '/g
822      s/'SWFLUX  '/'oceQsw  '/g
823      s/DIFx/DFxE/g
824      s/DIFy/DFyE/g
825      and add few ocean-forcing diagnostics:
826      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
827    o modifications to pkg/seaice/growth.F and budget.F, which change results of
828      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
829      as actual snow thickness.  It now refers everywhere to effective snow
830      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
831    
832    checkpoint58r_post
833    o modifications to pkg/seaice/growth.F, which change results of
834      lab_sea experiment: fixes pertain to melting snow over open water, to
835      masking EVAP under sea ice, and to using the correct AREA variable for
836      computations of EVAP, PRECIP, HSNOW, and GHEFF
837    o add ability to read bathy, salt, and theta using MNC (off by def)
838    o add flooding algorithm and advection of HSNOW for pkg/seaice;
839      both are turned off by default and do no change any results
840    o seaice advection with pkg/thsice: a step toward the use of non-linear
841      advection scheme, but #ifdef or commented out for now (requires more EXCH).
842    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
843      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
844      in natl_box (affects results @ truncation level: update output.txt)
845    o multi-threading and IO:
846      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
847      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
848        (needed to work with SingleCpuIO): tested in all verif. exp.
849    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
850      affects the results (but none of the verification test uses this scheme).
851    o Adding some pkg/diagnostics capability to pkg/seaice
852      (will certainly be subject to changes)
853    o ctrl: adding new control variables:
854      lwflux, lwdown, evap, snowprecip, apressure, runoff
855    
856    checkpoint58q_post
857    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
858      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
859      high_res_cube configuration by 4% on Columbia.
860    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
861      add (in global_with_exf/code) a version of EXF_INTERP_READ without
862      dynamical allocation (seems to work in multi-threaded).
863    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
864      single CPU io) so that TAF does not have to see EESUPPORT.h
865    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
866    
867    checkpoint58p_post
868    o obcs: stop if obcs is used with useCDscheme = .true.
869    o shelfice:
870     - fix a sign error so that no slip at shelfice interface works
871     - remove stop for combination non-hydrostatic code and shelfice. That does
872       not mean, that the results are correct, but at least they are numerically
873       stable
874    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
875    o added adjoint exch routined for all exch*3d* routines
876      and updated flow directives
877    
878    checkpoint58o_post
879    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
880      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
881    o change controling S/R for writing pickup file (new S/R do_write_pickup)
882      and clean-up reading/writing of pickup files.
883    o fix local version of read/write pickup (NH part) in rotating_tank/code
884    o simplify EXCH interface:
885     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
886     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
887    o added the regrid package
888    o shelfice:
889     - add a simple boundary layer scheme to reduce noise
890     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
891    
892    checkpoint58n_post
893    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
894       local variable (not in common block).
895    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
896      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
897      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
898        to work with SingleCpuIO.
899    o add "_d 0" to real constant of pkg/cfc subroutines ;
900       update exp. cfc_exemple & tutorial_cfc_offline output files.
901    o multi-threading and IO:
902      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
903        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
904      - barrier before and after reading.
905      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
906      - avoid using MDS_WRITELOCAL for LAND pkg output.
907      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
908        common-block variables ; Allows multi-threading with master-thread IO.
909    o change default MAX_NO_THREADS from 32 to 4 ;
910      and stop cleanly when MAX_NO_THREADS is too small.
911    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
912    
913    checkpoint58m_post
914    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
915       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
916    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
917       keep global_ocean.90x40x15 (for AD testing) with former secondary test
918       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
919    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
920        add MITgcm_tutorials (= code + all the tutorials)
921    o ecco, option to compute cost for total ssh (mean+anom)
922    o consistent with addition of ptracer and ssh in pkg/profiles
923    o profiles: adding ptracer and ssh
924    o testreport: change multi-test output-file name
925      (from output.txt.{name} to output.{name}.txt)
926    o profiles: now ok for mutli-tiles case
927    o seaice: add 4 parameters for different advection schemes for area,
928      (effective) seaice thickness, enthalphy, and snow height. Their default
929      is the standard parameter SEAICEadvScheme
930    o calc_gw:
931     - add cosFacU in zonal viscous flux (harmonic.visc.).
932     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
933       of tutorial_plume_on_slope.
934    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
935    o calc_gw: true flux-form, account for horizontal grid spacing.
936      update rotating_tank results, but not plume_on_slope (affected at
937      truncation level, 11 digits).
938    
939    checkpoint58l_post
940    o calc_gw:
941     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
942     - remove side-drag for now (need to fix it); update plume_on_slope results.
943     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
944    o commit code to make SST/SSS weights spatially variable
945      (based on either variable in-situ or variable initial T/S weights)
946    o pkg/ecco:
947      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
948        now based on horizontally varying weights wthetaLev, wsaltLev
949      * cost_averagesflags now returns year indices in addition to day, month
950      * sflux balance is performed on annual basis
951        (sflxumm, sfluxmm2, bal_sfluxmm)
952      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
953        including separate counting and multipliers
954    o pkg/rbcs
955      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
956    
957    checkpoint58k_post
958    o testreport:
959     - always build in dir. "build" (if not there, mkdir build instead of building
960       & running in input)
961     - run in dir run (if it exists), in build otherwise.
962     - call prepare_run (if input/prepare_run exists)
963     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
964    o pkg/exf modifications to interpolation and rotation routines for more
965       reasonable treatment of North Pole singularity: for tracers North Pole
966       value is set to northernmost zonal-mean value, for zonal velocity it is
967       set to zero, and for meridional velocity it is set to northernmost value.
968    o pkg/exf/exf_check_range.F
969     - add tile index to diagnostics and move stop statement to the very
970       end of the routine.
971    o pkg/diagnostics: (diagnostics_main_init.F)
972      define title of isomorphic variables according to the current config.
973    o pkg/thsice with pkg/seaice dynamics:
974    - fix domain of computation (interior only, required for exf) and do exchanges
975    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
976    o towards a standard way of dealing with multi-threading in MONITOR
977      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
978    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
979       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
980    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
981    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
982    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
983       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
984    o tracer advection:
985     - clean-up and simplify calc_common_factors.F
986     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
987       advection subroutine (but still not used within DST advection S/R)
988    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
989    
990    checkpoint58j_post
991    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
992      from file (collects calls previously in FORWARD_STEP)
993    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
994    o adjoint store dir. adjusted accordingly
995    o genmake2
996      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
997    
998    checkpoint58i_post
999    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1000      on wind stress (SEAICEstressFactor defaults to 1.)
1001    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1002      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1003    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1004      on CS-grid: no longer loosing mass.
1005    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1006    o pkg/ggl90: fix sloppy output and fix a bug
1007    o pkg/seaice: added SEAICEuseEVPpickup parameter
1008      - Set to false in order to start EVP solver with
1009        non-EVP pickup files when using SEAICEuseEVP
1010      - fix sign error in diffusion in seaice_calc_rhs
1011    
1012    checkpoint58h_post
1013    * Modifications for bottom topography control
1014      o replace hFacC by _hFacC at various places
1015      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1016      o add non-self-adjoint cg2d_nsa
1017      o update autodiff support routines
1018      o re-initialise hfac after ctrl_depth_ini
1019      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1020    * Adding verification for 5x5 box (4-layer) bottom topography control
1021    
1022    checkpoint58g_post
1023    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1024       used for mean seasonal cycle, mean diurnal cycle); add an example
1025       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1026    o pkg/ggl90:
1027      - add parameter (minimum surface kinetic energy)
1028      - fix bug (avoiding division by zero)
1029    o couple pkg/thsice to pkg/seaice:
1030      - modify advection in seaice to accomodate new scalar fields to be advected
1031      - only muliDimAdection scheme work with seaice/thsice
1032      - mapping of thsice-variables to seaice-variables, back and forth
1033      - does not break the verification experiments, but does not give the
1034        desired results either
1035    o pkg/seaice
1036      - make (default) second order advection a bit less confusing?
1037    
1038    checkpoint58f_post
1039    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1040      to pkg/seaice):
1041      - new routines thsice_map_exf and thsice_get_exf provide the interface
1042      - add an additional formal parameter to thsice_solve4temp
1043    o pkg/exf:
1044      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1045      - correct Stefan-Boltzmann constant
1046      - new parameter for longwave surface emittance
1047      - separate some stuff from exf_bulkformulae into new routines  
1048        exf_radiation, exf_wind
1049      - add new parameters and constants: longwave emissivity for ocean, ice
1050        and snow, evaporation parameters over ice
1051      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1052        either wind from stress or stress from wind
1053    o pkg/thSIce:
1054    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1055    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1056       and THSICE_CALC_THICKN
1057    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1058    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1059      to make debugging easier.
1060    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1061    o pkg/bulk_force:
1062      - clean-up comments and parameters ;
1063      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1064    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1065      generate new output for test-experiment: aim.5l_cs.thSI
1066    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1067      testreport accordingly
1068    
1069    checkpoint58e_post
1070    o SEAICE_CGRID adjoint done
1071    o R_STAR adjoint implemented.
1072      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1073      * need to sort out init. of h0facc, etc.
1074    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1075      to be able to use it in pure forward.
1076    
1077    checkpoint58d_post
1078    o upgrade simple test-experiment to tutorial example:
1079     step.1: duplicate the experiment and (step.2) will remove the old copy.
1080      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1081      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1082      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1083      tutorial_global_oce_biogeo    <- copy of dic_example
1084      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1085      tutorial_plume_on_slope       <- copy of plume_on_slope
1086      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1087      tutorial_global_oce_optim     <- empty for now (David ?)
1088      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1089     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1090    o correct a sign problem in cost_scat.F
1091    o obcs and ptracers: fix boundary conditions for advections schemes
1092      with larger stencil
1093    o thsice adjoint: start
1094    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1095      completeness
1096    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1097      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1098    o ptracers adjoint:
1099      * avoid extensive recomputatations
1100      * fix missing re-init. of gptr (missed by TAF)
1101    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1102      me to turn off the excessive output to STDOUT that this package produces
1103    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1104      and add those terms in Vector-Invariant formulation.
1105    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1106      if the control period (xx_hfluxperiod etc) is 0
1107    o in profiles pkg, clean routines and fix details
1108    o in ecco pkg, reading ssh data:
1109      fix problem in case the model does not start at iter0=0
1110    o fix mnc-pickup/restart for ptracers
1111    o new package prifiles:
1112      code to compute profile-based cost by Gael Forget
1113      (modifs in ecco, ctrl, autodiff)
1114    o Benign bug fix in initialization (spotted by M. Mazloff) of
1115      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1116    
1117  checkpoint58c_post  checkpoint58c_post
1118  o adjoint: finish NLFS adjoint and provide reference output in  o adjoint: finish NLFS adjoint and provide reference output in
1119    verification/global_ocean.90x40x15/results_ad_nlfs    verification/global_ocean.90x40x15/results_ad_nlfs

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