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revision 1.589 by jmc, Thu Dec 8 22:25:07 2005 UTC revision 1.995 by mlosch, Fri May 23 12:40:53 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/mnc: add some attributes to standard 1D-coordinate variables
8    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
9      mass points, when using mnc for output
10      - add runtime parameter (missing_value, missing_value_int) to override
11        default (which is the value of getcon('UNDEF'))
12    o pkg/mnc: prepare mnc for the actual use of missing values with the
13      diagnostics package: small fix in mnc_cw_readwrite.template and more
14      initialisation of never used fields
15      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
16      versions
17    o pkg/thsice/thsice_ini_vars.F added default initial values so that
18      thermodynamics sea ice solver does not blow up when some initial fields
19      are missing.
20    o move from external_forcing_surf.F to ini_forcing.F
21      the p-coord. hack consisting in using pLoad to set phi0surf ;
22      update output of tutorial_global_oce_in_p (affected @ truncation level).
23    o Freshen up a bit hs94.1x64x5, notably:
24      remove rotationPeriod and tRef=5*0. (adjoint only), and add
25      exactConserv=.TRUE.
26    o pkg/generic_advdiff:
27      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
28      applies to files where Temperature & Salinity 2nd Order moments are used.
29    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
30      this uses a dynamically allocated internal state data structure
31      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
32      and requires a fortran 90 compiler
33    
34    checkpoint59q
35    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
36       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
37    o Refresh tutorial_global_oce_biogeo, notably:
38      - change bathymetry (put back seamounts in ACC, use hFacs)
39      - change EOS (POLY3 --> JMD95Z)
40      - use Bryan-Lewis vertical diffusivity
41      - use multidimensional advection
42      - remove old virtual virtual in dic pkg, now done through ptracer pkg
43      - change a couple of parameters in dic pkg
44    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
45    o pkg/obcs: change default to OBCSfixTopo = .true.,
46      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
47      - replace "debugMode" with "debugLevel .GE. debLevB"
48    o implementation of TAF directives for gchem,cfc,dic
49    o remove "exp5" (replaced by tutorial_deep_convection).
50    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
51      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
52      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
53      --> changes results in exp4, seaice_obcs
54    o tutorial_deep_convection :
55      update the set-up and increase resolution and domain size ; start
56      from pseudo initial conditions = output at t=120mn in order to see
57      something happening when running testreport.
58    o pkg/seaice: add os7mp as an advection scheme
59                  add check for advection schemes
60                  add a flag for restoring T and S underneath sea ice
61    o pkg/my82: add netcdf-support and diagnostics
62    o thsice pkg:
63      - Now hsMax limits snow height by turning it into ice following
64        flooding scheme (and now conserving energy)
65      - Slight rewriting of the formula in thsice_calc_thick.F
66      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
67      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
68    
69    checkpoint59p
70    o gchem / dic / cfc :
71      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
72      - add new parameter files: "data.dic" & "data.cfc" ;
73      - various re-arrangement in initialisation & header file ;
74      - fix tutorial_global_oce_biogeo for multi-threaded test.
75    o pkg/dic: test for "pickup_dic" file when restarting ;
76      if no pickup-file, can restart with a re-initialised pH (same as it did
77      before) providing pickupStrictlyMatch is set to False.
78    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
79      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
80    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
81      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
82    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
83     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
84       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
85    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
86       scheme to use for vorticty-term ;
87     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
88       (with default selectVortScheme, return to original discretisation)
89     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
90    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
91    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
92      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
93      also fix diagnostics VISCAHW & VISCA4W.
94    
95    checkpoint59o
96    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
97    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
98      move a few statemens out the main loop into separate loops
99    o pkg/shelfice:
100      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
101        (kg/m^2/s), does not break tests, because in verification/isomip,
102        rhoConstFresh=rhoConst (by accident)
103      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
104      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
105        new file model/src/seawater.F, so that they are available for all pkgs.
106      - convert potential temperature into in-situ temperature. This changes the
107        isomip tests => update tests
108    o add a flag writePickupAtEnd (default=true) to be able to suppress
109      writing a pickup at the last timestep
110    o tools/mpack-1.6 :
111      - disable automake (not working) and autoconf (not needed).
112      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
113        also cleaner with much less compilation warnings.
114    o pkg/profiles:
115      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
116      (for "less than 32 characters name" compiler requirement)
117    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
118      conditions that have a different sampling frequency than S/T/U/V obcs
119    o pkg/diagnostics (stats-diags):
120      - fix global Min/Max in case 1 processor get only empty tiles
121    o genmake2: replace (4 times)
122         make genmake_tc_1.o >> genmake_warnings 2>&1
123      with
124         COMM="$CC $CFLAGS -c genmake_tc_1.c"
125         echo $COMM >> genmake_warnings
126         $COMM >> genmake_warnings 2>&1
127      to make genmake2 always see the value of CC as specified in the optfile.
128    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
129      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
130      - modify verification advect_cs test to test SOM-advection on CS-grid.
131    o pkg/ctrl:
132      - Rewrite of ctrl_map_ini_ecco.F,
133        introducing a generic routine (ctrl_map_ini_gen.F).
134      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
135    
136    checkpoint59n
137    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
138      number in dedicate array "hdiag":
139      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
140        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
141      - many small changes (integer format) for large number of diagnostics
142      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
143        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
144    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
145      usingSphericalGrid, this allows to define the rotated grid coordinates
146      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
147      geographical coordinates according to the inverse of the rotation defined
148      by the Euler angles, so that Coriolis parameter and online-interpolation by
149      exf works with the geographical coordinates on XC/YC/XG/YG.
150      Naturally, this feature does not work with all packages, so some
151      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
152      profiles), because there the coordinates are assumed to be regular
153      spherical grid coordinates.
154    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
155      - introduce isopycnal diffusion coefficient control.
156    o tools/adjoint_options:
157      - additional control vector components.
158    o pkg/mnc: have mnc create marginally meaning full coordinate variables
159      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
160    o pkg/mypackage:
161      - add example of read/write pickup for state-var ;
162      - add entry points to the main code for state-vars diags & write-pickup.
163    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
164      transitions for useExfYearlyFields
165      - add new subroutine that determines the file to read from for
166        use*YearlyFields = .TRUE. and .FALSE.
167      - add a verification experiment to global_with_exf that tests
168        useExfYearlyFields with USE_EXF_INTERPOLATION defined
169    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
170      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
171      subroutines (which could be generated from a template, because they are
172      almost identical), for now they are included in obcs_prescribe_read.F for
173      simplicity
174    o pkg/exf:
175      - add a little more diagnostic to exf_interp_read (in analogy to
176        mds_read_field, can be turned off with debugLevel < debugLevA=1)
177      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
178        ugly but fast by unrolling short inner loops, inserting a unroll=8
179        directive in routine lagran, and splitting a loop and making do while the
180        outermost loop (the latter requires the intoduction of index arrays)
181    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
182    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
183      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
184    o verification/seaice_obcs: updated for restart test and latest options
185    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
186      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
187      for now this is only available for the C-grid code and also within
188      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
189    
190    checkpoint59m
191    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
192      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
193    o gad_som : fix flux output (& diagnostics) to have same units as other  
194      advection scheme fluxes (was previously multiplied by deltaT).  
195    o added verification/seaice_obcs both to test seaice open boundaries
196      and to provide an example matlab scrpt for generating them
197    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
198    o pkg/salt_plume: clean up salt_plume_frac.F to
199      remove redundancy in PlumeMethod 1 and 4
200    o pkg/kpp: added saltplume diagnostics
201    o pkg/obcs and pkg/seaice:
202      - do not set uice and vice to zero when OB*icefile are unspecified
203      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
204      - moved seaice tracer obcs after call to seaice_growth
205    o pkg/salt_plume: added various options for salt plume depth
206      criterion and for vertical distribution of the salt
207    
208    checkpoint59l
209    o pkg/ptracers: new version of ptracers pickup:
210      read meta file and write only fields which are needed to restart.
211      ( same logic as main pickup file ; also using pickupStrictlyMatch )
212    o pkg/seaice:
213      - add timescale for melting due to warm mixed layer as a means of
214        setting SEAICE_availHeatFrac more conveniently
215      - add a CPP-flag/runtime parameter check for flooding algorithm
216      - reformulated availHeat in seaice_growth.F to be independent of AREA
217    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
218      unit changes
219    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
220    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
221      SX vector computer.
222    o pkg/seaice:
223      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
224        seaice forcing fields can now be read only through pkg/exf
225      - removed some unused halos
226    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
227    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
228      or U/VICE from U/VWIND before computing U/VSTRESS
229    
230    checkpoint59k
231    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
232      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
233    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
234      all experiments pass when compile with un-initialised var. checking option.
235    o added pkg/salt_plume
236    o script to test restart (for now, in MITgcm_contrib/jmc_script)
237    o pkg/seaice: new read/write pickup version.
238      read meta file and write only fields which are needed to restart.
239      ( same logic as main pickup file ; also using pickupStrictlyMatch )
240    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
241    o lab_sea.hb87: modify the domain & update output.hb87.txt :
242      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
243      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
244      process. Fixed here by closing the domain at the Northern boundary.
245    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
246    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
247      a set of consecutive levels in/from a 3-D array.
248    o pkg/ptracers:
249      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
250      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
251    
252    checkpoint59j
253    o in pkgs: dic, obcs, offline, rbcs:
254      standard way to compute coeff. for time interpolation between 2 time reccords
255      which retains full precision (& make results less dependent on compiler).
256      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
257    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
258      packages instead of reading ice cover and wind speed separately
259    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
260     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
261      to allow to compile customized code before the update)
262    o cleaning-up:
263      - fix CPP instruction syntax in pkg/obcs
264      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
265        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
266      - fix some threads issue in IO parts.
267    o pkg/dic:
268      - add tons of "_d 0" (--> much better testreports !)
269       and then update outputs of tutorial_global_oce_biogeo
270    o pkg/mom_fluxform:
271      add a special version of momentum advection intended to conserve momentum
272      next to a bathymetry step or a coastline edge. (default = off = #undef)
273    o new read/write pickup version:
274      - for now, only implemented for main (mdsio) pickup file.
275      - write out only what is needed to restart; merge pickup_nh , pickup_ph
276        and main pickup together.
277      - read meta file; read only what is needed to restart; stop if a field
278        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
279        if it make sense (even if the restart is not perfect).
280      - if no meta file, assume that pickup to read corresponds exactly to
281        a pickup that would currently be written.
282      - read pickup written in the old format (until checkpoint59i) if it
283        recognizes an old meta file (no field-list).
284      - add a meta file in exp. which starts from a pickup: 2 cases:
285        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
286         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
287        b) a meta file describing the content of the associated pickup file
288         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
289    o pkg/mdsio & pkg/rw:
290      - new routine to read a meta file ; new set of routine to read
291        Multiple-fields file (with meta file).
292    o added open boundary conditions capability for seaice
293        HSNOW, HSALT, UICE, and VICE
294    
295    checkpoint59i
296    o adjoint:
297      * fix multiDimAdvection adjoint
298        (partial recomputation problem by TAF for fVerT(:,:,kDown)
299        and comlev1 size definition (maxpass vs. max. number of tracers)
300      * verification/global_ocean.90x45x15 adjoint now tests
301        NLFS and multiDimAdvection using DST3 (=30)
302      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
303    o pkg/kpp: add "_d 0" to real constant (if missing);
304      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
305      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
306    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
307      for internal parameters related to restart process (formerly from PARAMS.h)
308      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
309    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
310      as argument. (only atm2d & obcs write_pickup have not yet been updated)
311    o pkg/monitor:
312      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
313      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
314      - account for deep Atmosphere factor and density factor (anelastic)
315    o added open boundary conditions capability for seaice HEFF and AREA
316    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
317      thermodynamics
318      - requires a little reorganization, which affects the testreport results
319        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
320        so that now the conservative form is tested
321      - add a few comments
322    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
323    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
324    o add new diagnostics to seaice: advective, diffusive fluxes (only for
325      multidim-advection, for scheme 2 they are not filled) and transports,
326      thermodynamic growth rates
327    o change units of EmPmR (inside the code, + within coupling interface)
328      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
329      Affects results @ truncation level (cg2d match) and update output of
330       experiments: lab_sea(6), global_ocean.90x40x15(10),
331      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
332      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
333      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
334      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
335    
336    checkpoint59h
337    o pkg/exf:
338      - improve vectorization by moving if-statement out of loops in
339        exf_mapfields, exf_radiation
340      - exf_bulkformulae.F: introduce 2D fields and vectorize code
341    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
342    o testreport:
343      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
344        monitor & update offline_exf_seaice exp. output.
345      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
346    o pkg/seaice:
347      - bug fix in the evp solver: boundary conditions were affected be
348        masking of zMax/zMin (changes results)
349      - minor bug fix in boundary conditions in seaice_calc_strainrates
350        (changes results for no_slip)
351      - seaice_lsr.F: make interpolation of eta dependent on boundaries
352      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
353      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
354        stress formulation and no-slip boundary conditions
355    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
356      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
357    o pkg/seaice: a first HSALT time stepping equation has been checked in
358    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
359      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
360      without requiring DO-IF statements
361    o pkg/thsice:
362      use continuous power-law function for partition of energy between lateral
363      melting/freezing and thinning/thickening ; old code using step function
364      still available with #undef THSICE_FRACEN_POWERLAW
365      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
366    o testreport: change AD testing : check against results/output_adm.txt
367      using same scripts as for forward test.
368    
369    checkpoint59g
370    o adjoint testing: in preparation for changing testreport:
371      - output format: cost and grad written on separated lines
372      - ad output results in directory "results" (instead of "results_ad")
373    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
374    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
375    o pkg/ecco: allow user defined cost function contributions
376    o testreport:
377      Allow to choose (per experiment) the list of tested output variables
378       and the main variable (used to issue a pass/FAIL ) ;
379      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
380      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
381      Also modify printing of summary:
382       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
383       b) echo the list of tested variables in the individual summary.txt of
384          each experiment.
385    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
386      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
387      (but still depend on the tile decompostion of the domain).
388    o pkg/seaice: change a discretization detail to make the B-grid code
389      "more symmetric". This change is likely to remove all "ridges/leads" that
390      where quasi-aligned with the grid in B-grid solutions. It may also be
391      the solution to the stress coupling issues with the B-grid.
392    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
393      remove .cvsignore from input dir. (since testreport no longer run here).
394    o pkg/thsice:
395     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
396     - fix reshaping of sea-ice just after advection:
397       melt all the ice only if ice-volume is too small.
398     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
399       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
400     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
401    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
402      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
403    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
404      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
405      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
406      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
407      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
408      -> update output.txt
409    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
410     this affects truncation error: -> update output.txt of exp:
411      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
412      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
413    
414    checkpoint59f
415    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
416    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
417      a bounded range (in forward mode)
418    o pkg/ecco, ctrl, autodiff and mom_common:
419     internal parameter controls, completements of implementations
420    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
421    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
422      (not seem any difference in testing results).
423    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
424       at face corners.
425    o pkg/generic_advdiff:
426     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
427      loop range indices for computing vertical advection tendency
428      and do the calculation in the interior only (no overlap) ;
429      for now, only implemented for SOM advection (to save CPU time).
430     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
431    o exch2 adjoint
432      First set of changes:
433      - add exch2 hand-written adjoint templates
434      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
435        This will require cleanup in pkg/autodiff/*.F
436        (changed routines currently kept separate in verif. code/)
437      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
438        that used to hide exch2 or cubed-sphere specific code
439        (commented via 'cph-exch2')
440    o pkg/seaice
441      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
442    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
443       output of global_ocean.cs32x15.thsice .
444    
445    checkpoint59e
446    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
447      for B-grid vector (not yet tested) and C-grid vector (<- only used
448      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
449    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
450      (#ifdef ALLOW_SALT_PLUME)
451    o gather_2d/scatter_2d: removed halo regions
452    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
453      scheme and the corresponding test case (under front_relax dir). For now,
454      only available with Skew-flux form and not yet tested in realistic set-up.
455      adjoint: store directives updated, but gradient checks deteriorated,
456      so maybe GM/Redi adjoint is now broken.
457    o seaice adjoint
458      * add AREA, HEFF, HSNOW as control variable
459        (should not change lab_sea results)
460      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
461    o pkg/seaice:
462      * added computation of saltFlux in seaice_growth;
463        For time being, sea ice salinity is assumed constant
464        contribution of snow flooding to freshening of sea ice is neglected.
465        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
466        defaults to 0.0 in order to maintain backward compatibility.
467        Typical values for SEAICE_salinity are 4 to 10 g/kg.
468      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
469      * added SEAICE_availHeatFrac, which specifies fraction of surface level
470        heat content used to melt or grow ice
471      * commented out cap of HICE: it helps keep ice thinner
472      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
473      * applied OBCS T/S mask to HEFFM sea ice mask
474    
475    checkpoint59d
476    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
477     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
478     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
479    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
480     and change default value of parameter "GM_Small_Number";
481     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
482       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
483       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
484    o pkg/ecco: cost function when applying pkg/smooth to controls
485    o pkg/ctrl: add forcingPrecond run time parameter
486    o pkg/seaice:
487     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
488     - fix bug in metric terms of u-equation in LSR solver (implicit part),
489       changes verification/lab_sea
490     - rearrange implicit part of u-equation in LSR solver to make it easier to
491       read, understand, and debug. This causes changes at the truncation level.
492     - fix (serious) bug in the boundary conditions (sign error in the implicit
493       part) of the LSR solver. Changes all LSR results.
494     - fixed problem with HSNOW initialization to avoid thick snow when AREA
495       is initilized with small values - does not change lab_sea results.
496     - added HsnowFile initialization capability
497    o pkg/smooth: addition to model/src and pkg/ctrl so allow
498     initialization of pkg/smooth and application to control vector
499    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
500    o dependencies: pkg/profiles requires pkg/cal
501    o pkg/profiles:
502     - added option ALLOW_PROFILES_GENERICGRID
503         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
504         that interpolation information (grid points and coefficients) is provided
505         within the netcdf input files.
506         -> sample matlab scripts can be found in MITgcm_contrib/gael
507         that allow you to prepare netcdf input files.
508     - also modified: cleaner include statements, cleaner error print statements,
509       cleaner stops when error, and more tests of the netcdf input files consistency.
510    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
511    o pkg/seaice:
512     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
513       requires a new routine: seaice_diagnostics_fill.F
514     - make sure that seaice does not move if not forced (pressure replacement
515       method, Hibler and Ip, 1995), changes results
516     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
517     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
518       It is turned off by default (=-1.), because it changes the results.
519     - make it possible to read AREA from a file, too.
520    
521    checkpoint59c
522    o add S/R and diagnostics for oceanic mixed-layer depth
523    o move GMRedi call after all vertical mixing schemes (including KPP)
524    o pkg/thsice:
525     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
526      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
527    o pkg/obcs:
528     - bug fix for balance code
529    o pkg/seaice:
530      - allow values of SEAICE_elasticParm > 1
531      - add new parameter SEAICE_evpTauRelax as an alternative
532        to SEAICE_elasticParm
533      - make lsr boundary conditions free slip (by default), changes result
534      - add code for no slip boundary conditions for lsr
535      - set minimum of zeta to zero (and not 4e8) (changes results)
536      - add a cap on AREA after advecting AREA if seaice_growth is not called
537    o change calculation of Visbeck K:
538      - no longer depend on tapering scheme; instead, compute slope (limited
539        by GM_maxSlope). this is equivalent to what was comuted before with
540        clipping or linear tappering.
541      - fix vertical averaging (wrong by 1/2 level)
542      - leave the old version (but will not be maintained) within
543        #ifdef OLD_VISBECK_CALC / #endif
544      - update output of exp. ideal_2D_oce
545    o change error catch in calc_r_star to improve vectorization
546    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
547      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
548    o adjoint:
549      Re-organized adjoint checkpointing according to Matt Mazloff
550      (but with modifs/completions/cleanups)
551      Storing is now bundled into large arrays to optimized I/O
552      (and second step in cleanup of the_main_loop)
553    
554    checkpoint59b
555    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
556      - export/import (between ocean & coupler) fields needed for ocean DIC.
557    o pkg/seaice:
558      - get rid of three more exchanges seaice_calc_viscosities (required
559        different loop boundaries in seaice_lsr and seaice_ocean_stress)
560      - bug fix in seaice_ocean_stress (update of lab_sea required)
561      - reduce loop boundaries to necessary minimum also in seaice_evp
562      - go back to the old way of computing deltaC/Z as the adjoint likes that
563        better
564    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
565      passive tracer to an Age Tracer) + update output.txt
566    o pkg/exf:
567      - implement A-grid / C-grid selection for wind-stress input files.
568      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
569      for now, in exf_bulk_largeyeager04.F only :
570      - change implementation for case where windspeed + 2. components wind-stress
571        are read-in. AND use rhoConstFresh to convert evap.
572    o pkg/seaice:
573      - use correct EXCH_UV for wind-forcing (on A-grid).
574      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
575        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
576    o pkg/exf:
577      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
578      EXF_INTERPOLATION:
579      - merge global_with_exf/code version of exf_interp_read.F
580        to the main code ;
581      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
582        reading the file ; Important: This options needs to be defined to recover
583        previous code.
584        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
585      - no longer loose real*8 precision along the way when using exf_iprec=64.
586    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
587      - change discretisation of evp-solver in order to avoid another exchange
588        (changes lab_sea) and clean up a little
589      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
590        help the adjoint (this also changes the results slightly)
591      - add a few "_d 0" where they had been missing in seaice_evp.F
592      - cleaning up: remove unused seaice_calc_rhs.F
593    o pkg/exf: some cleaning-up:
594      - change various "constants" into runtime parameters
595      - cleaned-up Large&Yeager04 routine which should eventually
596        replace exf_bulkformulae.F (changed names of S/R and CPP)
597        and merged various ALLOW_ATM_WIND options
598     only used with thsice pkg (in thsice_get_exf.F):
599      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
600        which are used when useStabilityFct_overIce=TRUE (= the default)
601      - change default values of ice & snow emissivity and scale downward LW
602        by ice & snow emissivity.
603    o pkg/thsice:
604     fix few little problems, in thsice_calc_thickn.F:
605      - growth vertically (and not laterally) if iceFrac == iceMaskMax
606      - melt only laterally if hIce < hThinIce (as the comments say)
607      and in thsice_extend.F:
608      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
609      - start to form ice as soon as the minimum ice-volume is reachable.
610     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
611      and cpl_aim+ocn
612    o pkg/kpp
613     - move computation of surface related input fields to KPP into a new
614       subroutine kpp_forcing_surf.F
615     - remove wrong (within bi,bj loops) EXCH calls.
616     - little cleaning (add argument myThid in last position, cvs header ...)
617     - for now, fix conservation problem by exchanging KPPviscAz (may not
618       be the best fix)
619    o pkg/seaice
620     - check for inconsistent evp parameter/cpp-flag combination
621     - remove leftover errIO flat for obsolete name list error handling
622    o OpenAD
623     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
624    
625    checkpoint59a
626    o pkg/seaice: some parameter clarifications and a little bit of clean up
627    o pkg/thsice: rename run-time parameters:
628       himin       -> hIceMin
629       himin0      -> hThinIce
630       hihig       -> hThickIce
631       i0          -> i0swFrac
632       transCoef   -> bMeltCoef
633       frac_energy -> fracMelting
634      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
635       with default values (for now) that do not change the results.
636      remove old version of thsice vars advection in pkg/seaice.
637    o in FFIELDS.h:
638      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
639      - make pLoad & sIceLoad always available (but still only used if
640         ATMOSPHERIC_LOADING is #define).
641    o pkg/kpp: replaced _KPP_RL with _RL
642    o bug fixes for vertical diffusivity computations when both KPP and
643        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
644        are no longer updating the vertical diffusivity array
645        (passed as argument) but are (re-) setting those arrays.
646    o pkg/seaice: fix bug in evp solver, while doing that
647      - change (improve?) discretization of stress computations for both
648        cgrid-lsr and evp solver
649      - add a new routine to compute strain rates
650      - the above changes lab_sea results
651      - add no slip conditions for evp solver (off by default), lsr-version
652        may follow
653      - fix exchange for shear at Z-points (does not change lab_sea)
654      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
655        (to force the user to pick a time step since there is not "safe" way
656        of choosing it)
657      - add principal stress diagnostics
658      - rearrange fields for evp a little to avoid having to call a: too many
659        exchanges and b: exchanges for stress trensor components which we do
660        not have.
661      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
662        of evp, complete rewrite for lsr case (latter is does not yet work
663        in all cases)
664    o pkg/kpp: add code to have mixing in shelf ice caverns
665      - add myThid to all kpp routines (long overdue)
666    
667    checkpoint59
668    o pkg/exf:
669      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
670        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
671      - move exf header files from lower_case.h to UPPER_CASE.h ;
672        add missing cvs Header & Name
673      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
674      - add namelist param. selectStressGridPosition, exf_monFreq
675      - retire many _CLIM routines, and remove data.exf_clim
676        + params moved to data.exf
677        + climsst, climsss now handled by exf_set_gen, i.e.
678          climss?period=0 refers to constant field,
679          climss?period=-12 to monthly forcing
680      - split up namelists in data.exf
681    o pkg/seaice:
682      - remove seaice_exch and seaice_exch_uv
683      - remove superfluous exchange of theta
684      - add myThid to seaice_budget_ocean/ice
685      - add new interface for atmospheric wind forcing (C-grid only)
686        + new routine
687        + two new field (taux, tauy for stress over ice)
688        + removed one global field (DAIRN) for C-grid case only
689    o pkg/thsise
690      - 2nd set of modifs for thsice adjoint in conjunction with exf
691    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
692    
693    checkpoint58y_post
694    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
695      vertical diffusivity, similar to that in MOM4; turned on using
696      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
697      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
698    o Added capability for 3D specification of background vertical diffusion
699      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
700      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
701      "data" file that contains the 3D vertical diffusivity coefficients.
702    o ice dynamics (pkg/seaice) with thsice thermodynamics:
703      - add code within pkg thsice to advect & diffuse sea-ice fields
704      similar to (and will replace) what has been added in  seaice_advdiff.F,
705      but: - conserving Mass, Heat & Salt.
706           - better when using non-linear advection scheme (not yet fully tested)
707           - can also be used in atmospheric set-up (for now, only the diffusion).
708    
709    checkpoint58x_post
710    o IO option for global-file compact format:
711      - add options when generating topology (utils/exch2/matlab-topology-generator)
712      - add I/O capability (pkg/mdsio).
713      - adapt utils/matlab/rdmds.m to read this format.
714      for now long-line format not yet supported by pkg/mdsio (& exch2).
715    o shelfice: add a few diagnostics
716    
717    checkpoint58w_post
718    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
719      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
720      (and replace horiVertRatio in NH code).
721      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
722                         and tutorial_plume_on_slope (sensitive to truncation)
723    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
724      directly to drive seaice model (C-grid only)
725    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
726     - reintroduce computation of wind from stress,
727     - compute tau (in exf_bulkformulae.F) from windstress averaged to
728       mass points to avoid tau = 0
729     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
730    o rdmnc.m: make it work with "global" files created with gluemnc
731    o rdmnc.m : some improvements in dealing with singleton dimension
732      (tested on all testreport mnc output files).
733    o genmake2: disable pkg/profiles if netcdf test fails.
734    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
735    o move call to cal_readparms up to make calendar parameters/variable available
736      to all packages
737    
738    checkpoint58v_post
739    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
740      useDynP_inEos_Zc tested.
741    o pkg/exf: changes to properly interpolate/mask/scale initial fields
742    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
743      and portions thereof.  See read_cs.txt for description and examples.
744    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
745      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
746      following the great-circle arc between those 2 points.
747    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
748      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
749    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
750     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
751     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
752     - still needs work (not working with some options ; efficiency to improve)
753       and serious testing.
754     - use this scheme for temperature & salinity in 2 advection test exp.:
755       advect_xy & advect_xz, respectively.
756    
757    checkpoint58u_post
758    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
759    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
760    o testreport: add option "-skipdir" to skip some test.
761    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
762      momentum calculation.
763    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
764    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
765      remove checkpoint.F and the_correction_step.F (no longer used);
766      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
767    o add option (linFSConserveTr) to correct for tracer source/sink due to
768      Linear Free surface
769    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
770    o pkg/thsice: fix reading mnc-pickups
771    
772    checkpoint58t_post
773    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
774    o pkg/mdsio:
775     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
776       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
777       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
778     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
779     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
780       either MDS_READ_FIELD or MDS_WRITE_FIELD )
781     - new S/R (to replace MDSWRITEMETA), which allows to write more
782       informations (variable names, time ...) to meta files.
783     - modify rdmds.m to give back the meta file content.
784    o pkg/diagnostics: change vertical interpolation to be safer, and more
785       flexible (define p-levels to interpolate to in data.diagnostics);
786      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
787       diagnostic pointer.
788    o pkg/seaice: more cleaning up of seaice_growth, added many comments
789    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
790    o fix multi-category seaice:
791     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
792       SEAICE_MULTICATEGORY
793     - fix short wave heat flux
794    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
795       and allow to use EVP solver. Change forward lab_sea: test both EVP
796       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
797    o Initial check-in of lab_sea adjoint
798      (very similar to natl_box_adjoint/code_seaice)
799      * used C-grid and EVP solver
800      * used KPP, GM/Redi
801      * uses inAdExact=.TRUE.
802      * gradient checks fail for both ADM and TLM
803        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
804        f.d. gradients actually seem more problematic than ADM, TLM gradients;
805        issue is related to forward mismatch between g77 an ifort
806    o pkg/seaice: overhaul of thermodynamics
807     - growth.F and groatb.F are replaced by new routine seaice_growth.F
808     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
809     - move a few global fields out of SEAICE.h into seaice_growth.F and
810       make them 2D (FICE/QNETO/ ...)
811     - remove FO (it is the same as QNETO)
812     - introduce a few local fields to avoid modifying external fields such
813       as atemp, etc.
814    
815    checkpoint58s_post
816    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
817      changed exf_set_gen.F so that
818        genperiod=0 means input file is one time-constant field and
819        genperiod=-12 means input file contains 12 monthly means
820    o CG2D: use pre-computed solver main-diagonal (stored in common block);
821      this affects truncation error ; generate new output file for exp. which
822      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
823        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
824        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
825        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
826        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
827        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
828    o start implementation of deep-atmosphere and anelastic formulation
829    o verification: remove 2nd copy of input files and use script "prepare_run"
830      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
831    o mom_common/vecinv/fluxform: fix a few initialisation isssues
832    o profiles: fix for multithreaded case
833    
834    o diagnostics: rename few diags:
835      s/'PRESSURE'/'RCENTER '/g
836      s/'TICE    '/'oceFreez'/g
837      s/'TAUX    '/'oceTAUX '/g
838      s/'TAUY    '/'oceTAUY '/g
839      s/'SWFLUX  '/'oceQsw  '/g
840      s/DIFx/DFxE/g
841      s/DIFy/DFyE/g
842      and add few ocean-forcing diagnostics:
843      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
844    o modifications to pkg/seaice/growth.F and budget.F, which change results of
845      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
846      as actual snow thickness.  It now refers everywhere to effective snow
847      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
848    
849    checkpoint58r_post
850    o modifications to pkg/seaice/growth.F, which change results of
851      lab_sea experiment: fixes pertain to melting snow over open water, to
852      masking EVAP under sea ice, and to using the correct AREA variable for
853      computations of EVAP, PRECIP, HSNOW, and GHEFF
854    o add ability to read bathy, salt, and theta using MNC (off by def)
855    o add flooding algorithm and advection of HSNOW for pkg/seaice;
856      both are turned off by default and do no change any results
857    o seaice advection with pkg/thsice: a step toward the use of non-linear
858      advection scheme, but #ifdef or commented out for now (requires more EXCH).
859    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
860      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
861      in natl_box (affects results @ truncation level: update output.txt)
862    o multi-threading and IO:
863      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
864      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
865        (needed to work with SingleCpuIO): tested in all verif. exp.
866    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
867      affects the results (but none of the verification test uses this scheme).
868    o Adding some pkg/diagnostics capability to pkg/seaice
869      (will certainly be subject to changes)
870    o ctrl: adding new control variables:
871      lwflux, lwdown, evap, snowprecip, apressure, runoff
872    
873    checkpoint58q_post
874    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
875      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
876      high_res_cube configuration by 4% on Columbia.
877    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
878      add (in global_with_exf/code) a version of EXF_INTERP_READ without
879      dynamical allocation (seems to work in multi-threaded).
880    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
881      single CPU io) so that TAF does not have to see EESUPPORT.h
882    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
883    
884    checkpoint58p_post
885    o obcs: stop if obcs is used with useCDscheme = .true.
886    o shelfice:
887     - fix a sign error so that no slip at shelfice interface works
888     - remove stop for combination non-hydrostatic code and shelfice. That does
889       not mean, that the results are correct, but at least they are numerically
890       stable
891    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
892    o added adjoint exch routined for all exch*3d* routines
893      and updated flow directives
894    
895    checkpoint58o_post
896    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
897      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
898    o change controling S/R for writing pickup file (new S/R do_write_pickup)
899      and clean-up reading/writing of pickup files.
900    o fix local version of read/write pickup (NH part) in rotating_tank/code
901    o simplify EXCH interface:
902     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
903     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
904    o added the regrid package
905    o shelfice:
906     - add a simple boundary layer scheme to reduce noise
907     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
908    
909    checkpoint58n_post
910    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
911       local variable (not in common block).
912    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
913      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
914      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
915        to work with SingleCpuIO.
916    o add "_d 0" to real constant of pkg/cfc subroutines ;
917       update exp. cfc_exemple & tutorial_cfc_offline output files.
918    o multi-threading and IO:
919      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
920        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
921      - barrier before and after reading.
922      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
923      - avoid using MDS_WRITELOCAL for LAND pkg output.
924      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
925        common-block variables ; Allows multi-threading with master-thread IO.
926    o change default MAX_NO_THREADS from 32 to 4 ;
927      and stop cleanly when MAX_NO_THREADS is too small.
928    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
929    
930    checkpoint58m_post
931    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
932       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
933    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
934       keep global_ocean.90x40x15 (for AD testing) with former secondary test
935       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
936    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
937        add MITgcm_tutorials (= code + all the tutorials)
938    o ecco, option to compute cost for total ssh (mean+anom)
939    o consistent with addition of ptracer and ssh in pkg/profiles
940    o profiles: adding ptracer and ssh
941    o testreport: change multi-test output-file name
942      (from output.txt.{name} to output.{name}.txt)
943    o profiles: now ok for mutli-tiles case
944    o seaice: add 4 parameters for different advection schemes for area,
945      (effective) seaice thickness, enthalphy, and snow height. Their default
946      is the standard parameter SEAICEadvScheme
947    o calc_gw:
948     - add cosFacU in zonal viscous flux (harmonic.visc.).
949     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
950       of tutorial_plume_on_slope.
951    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
952    o calc_gw: true flux-form, account for horizontal grid spacing.
953      update rotating_tank results, but not plume_on_slope (affected at
954      truncation level, 11 digits).
955    
956    checkpoint58l_post
957    o calc_gw:
958     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
959     - remove side-drag for now (need to fix it); update plume_on_slope results.
960     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
961    o commit code to make SST/SSS weights spatially variable
962      (based on either variable in-situ or variable initial T/S weights)
963    o pkg/ecco:
964      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
965        now based on horizontally varying weights wthetaLev, wsaltLev
966      * cost_averagesflags now returns year indices in addition to day, month
967      * sflux balance is performed on annual basis
968        (sflxumm, sfluxmm2, bal_sfluxmm)
969      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
970        including separate counting and multipliers
971    o pkg/rbcs
972      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
973    
974    checkpoint58k_post
975    o testreport:
976     - always build in dir. "build" (if not there, mkdir build instead of building
977       & running in input)
978     - run in dir run (if it exists), in build otherwise.
979     - call prepare_run (if input/prepare_run exists)
980     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
981    o pkg/exf modifications to interpolation and rotation routines for more
982       reasonable treatment of North Pole singularity: for tracers North Pole
983       value is set to northernmost zonal-mean value, for zonal velocity it is
984       set to zero, and for meridional velocity it is set to northernmost value.
985    o pkg/exf/exf_check_range.F
986     - add tile index to diagnostics and move stop statement to the very
987       end of the routine.
988    o pkg/diagnostics: (diagnostics_main_init.F)
989      define title of isomorphic variables according to the current config.
990    o pkg/thsice with pkg/seaice dynamics:
991    - fix domain of computation (interior only, required for exf) and do exchanges
992    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
993    o towards a standard way of dealing with multi-threading in MONITOR
994      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
995    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
996       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
997    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
998    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
999    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1000       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1001    o tracer advection:
1002     - clean-up and simplify calc_common_factors.F
1003     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1004       advection subroutine (but still not used within DST advection S/R)
1005    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1006    
1007    checkpoint58j_post
1008    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1009      from file (collects calls previously in FORWARD_STEP)
1010    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1011    o adjoint store dir. adjusted accordingly
1012    o genmake2
1013      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1014    
1015    checkpoint58i_post
1016    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1017      on wind stress (SEAICEstressFactor defaults to 1.)
1018    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1019      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1020    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1021      on CS-grid: no longer loosing mass.
1022    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1023    o pkg/ggl90: fix sloppy output and fix a bug
1024    o pkg/seaice: added SEAICEuseEVPpickup parameter
1025      - Set to false in order to start EVP solver with
1026        non-EVP pickup files when using SEAICEuseEVP
1027      - fix sign error in diffusion in seaice_calc_rhs
1028    
1029    checkpoint58h_post
1030    * Modifications for bottom topography control
1031      o replace hFacC by _hFacC at various places
1032      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1033      o add non-self-adjoint cg2d_nsa
1034      o update autodiff support routines
1035      o re-initialise hfac after ctrl_depth_ini
1036      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1037    * Adding verification for 5x5 box (4-layer) bottom topography control
1038    
1039    checkpoint58g_post
1040    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1041       used for mean seasonal cycle, mean diurnal cycle); add an example
1042       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1043    o pkg/ggl90:
1044      - add parameter (minimum surface kinetic energy)
1045      - fix bug (avoiding division by zero)
1046    o couple pkg/thsice to pkg/seaice:
1047      - modify advection in seaice to accomodate new scalar fields to be advected
1048      - only muliDimAdection scheme work with seaice/thsice
1049      - mapping of thsice-variables to seaice-variables, back and forth
1050      - does not break the verification experiments, but does not give the
1051        desired results either
1052    o pkg/seaice
1053      - make (default) second order advection a bit less confusing?
1054    
1055    checkpoint58f_post
1056    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1057      to pkg/seaice):
1058      - new routines thsice_map_exf and thsice_get_exf provide the interface
1059      - add an additional formal parameter to thsice_solve4temp
1060    o pkg/exf:
1061      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1062      - correct Stefan-Boltzmann constant
1063      - new parameter for longwave surface emittance
1064      - separate some stuff from exf_bulkformulae into new routines  
1065        exf_radiation, exf_wind
1066      - add new parameters and constants: longwave emissivity for ocean, ice
1067        and snow, evaporation parameters over ice
1068      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1069        either wind from stress or stress from wind
1070    o pkg/thSIce:
1071    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1072    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1073       and THSICE_CALC_THICKN
1074    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1075    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1076      to make debugging easier.
1077    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1078    o pkg/bulk_force:
1079      - clean-up comments and parameters ;
1080      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1081    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1082      generate new output for test-experiment: aim.5l_cs.thSI
1083    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1084      testreport accordingly
1085    
1086    checkpoint58e_post
1087    o SEAICE_CGRID adjoint done
1088    o R_STAR adjoint implemented.
1089      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1090      * need to sort out init. of h0facc, etc.
1091    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1092      to be able to use it in pure forward.
1093    
1094    checkpoint58d_post
1095    o upgrade simple test-experiment to tutorial example:
1096     step.1: duplicate the experiment and (step.2) will remove the old copy.
1097      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1098      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1099      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1100      tutorial_global_oce_biogeo    <- copy of dic_example
1101      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1102      tutorial_plume_on_slope       <- copy of plume_on_slope
1103      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1104      tutorial_global_oce_optim     <- empty for now (David ?)
1105      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1106     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1107    o correct a sign problem in cost_scat.F
1108    o obcs and ptracers: fix boundary conditions for advections schemes
1109      with larger stencil
1110    o thsice adjoint: start
1111    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1112      completeness
1113    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1114      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1115    o ptracers adjoint:
1116      * avoid extensive recomputatations
1117      * fix missing re-init. of gptr (missed by TAF)
1118    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1119      me to turn off the excessive output to STDOUT that this package produces
1120    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1121      and add those terms in Vector-Invariant formulation.
1122    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1123      if the control period (xx_hfluxperiod etc) is 0
1124    o in profiles pkg, clean routines and fix details
1125    o in ecco pkg, reading ssh data:
1126      fix problem in case the model does not start at iter0=0
1127    o fix mnc-pickup/restart for ptracers
1128    o new package prifiles:
1129      code to compute profile-based cost by Gael Forget
1130      (modifs in ecco, ctrl, autodiff)
1131    o Benign bug fix in initialization (spotted by M. Mazloff) of
1132      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1133    
1134    checkpoint58c_post
1135    o adjoint: finish NLFS adjoint and provide reference output in
1136      verification/global_ocean.90x40x15/results_ad_nlfs
1137    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1138      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1139      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1140      with SEAICE_CGRID defined.
1141    o move calendarDumps from "data" to "data.cal" and clean-up the code
1142      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1143    o add useEXF & useCAL flags (for now, set in hard-coded way)
1144    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1145      (were missing in NH mode, and wrong in quasihydrostatic mode).
1146      waiting for Chris updated version of calc_gw to add those CALLs.
1147    o fix bug in quasihydrostatic S/R ;
1148      add a test for this option: global_ocean.90x40x15.qshyd
1149    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1150      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1151    o add on/off flag useOffLine for package OFFLINE
1152    o seaice:
1153      - modify advection so that it works also on the C-grid
1154      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1155        problem in multi-tile runs with C-grid
1156      - add flags for clipping ice velocities and/or masking solver forcing
1157      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1158        C-grid solver
1159      - added a few comments to seaice_diffusion.F
1160      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1161        are now exclusive)
1162      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1163        required re-ordering the code a little:
1164       + make DAIRN global variable (defined in SEAICE)
1165       + move computation of the viscosities eta and zeta into a new separate
1166         routine (because I need to recompute them in seaice_ocean_stress.F)
1167    
1168    checkpoint58b_post
1169    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1170      update output.txt of exp. aim.5l_cs.thSI
1171    o various mnc cleanups and improvements:
1172      + shrink lookup tables by factor of ~4
1173      + better error reporting when running out of lookup space
1174      + able to handle longer path/file names (up to 500 chars)
1175    o adjoint:
1176      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1177      - TBD: "hidden" mom_vecinv recomp. in dynamics
1178    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1179     (allow to differentiate between forcing components using new integer flags:
1180      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1181     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1182    o ecco
1183      - enable trend removal from SSH anomaly obs.
1184    o adjoint
1185      - a fix for PmEpR when #undef EXACT_CONSERV
1186      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1187      - try to fix "hidden" recomp. in forward_step for NLFS
1188        (NLFS seems broken sometimes after I checked it in)
1189    o seaice:
1190     - add c-grid version of the dynamic solver:
1191       + three new routines that are the c-grid substitute lsr, dynsolver
1192         and ostres
1193       + put a few fields that were local to dynsolver into global common
1194         blocks, so that I can move the computation of stresses etc into
1195         seaice_lsr (saves coding but may break the adjoint).
1196     - replace more hardwired parameters by runtime parameters
1197     - add ice masks that mask the rhs of the implicit solvers where there
1198       is no ice (commented out in seaice_dynsolver, because i am not sure
1199       if this works properly), eventually this should replace the clipping
1200       of ice velocities in seaice_dynsolver to +/-40cm/s.
1201    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1202      include it only where its needed
1203    o move balancing of fluxes before the call of external_forcing_surf
1204    o seaice:
1205      - correct units of turning angles (now they are really in degrees)
1206      - move computation of GWATX/Y out of main routine into dynsolver
1207      - initialize GWATX/Y in seaice_init
1208    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1209      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1210    o seaice: add runtime flags for turning angles (default to zero)
1211    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1212      and trend from exf forcing and ctrl control adjustments
1213    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1214      (since checkpoint57x_post)
1215    o change the default rotation period to 86164.s = the Earth rotation
1216    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1217      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1218    o seaice advection: add code for choosing between the default (2nd order
1219      central differences) and multiDim advection schemes provided by
1220      pkg/generic_advdiff
1221    o seaice:
1222      - removed all references to SEAICE_GRID.h fields from
1223        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1224        (cubed-sphere configuration will change a little)
1225      - grid computations in seaice_init are obsolete now.
1226      - cleaned up code a little so that is easier to read (hopefully).
1227      - added new (better?) discretizations of default advection and diffusion
1228        (turn on with SEAICEuseFluxForm)
1229      - replace 1 in 3d global fields by kSurface in growth.F
1230      
1231    checkpoint58a_post
1232    o seaice:
1233      - bug fix in advect.F
1234    o shelfice:
1235      - separate shelfice load anomaly from pload (breaks with time
1236        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1237        Its default is 0., but it may be computed more cleverly from (unknown)
1238        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1239        done offline. A good approximation of the pressure load anomaly is
1240        necessary to avoid large initial adjustment processes underneath
1241        deep-reaching shelfice.
1242      - small fix in ISOMIP shelfice_thermodynamics
1243      - add more sophisticated thermodynamics of Hellmer (1989), this is
1244        now the default
1245      - give a few constants more intuitive names
1246    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1247      if bulk formulae are used in long integration (especially EmPmR). Turn
1248      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1249      if balancePrintMean, the imbalance that is substracted is printed to
1250      STDOUT.
1251    o fix bug (typo) in obcs_apply_eta.F
1252    o add a new package shelfice which enables us to model the circulation
1253      underneath shelf-ice with draughts of hundreds of meters.
1254     - works
1255     - to do: + include improved thermodynamics
1256              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1257                instead of new field kTopC
1258              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1259                instead of new field R_shelfIce and new code in ini_depth.F
1260                and ini_mask_etc.F?
1261              + adjust vertical mixing schemes?
1262    o seaice pkg:
1263     - add a cpp-flag to include a simple formula for a salinity dependent
1264       freezing point of sea water at the surface
1265     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1266       meridional stresses are now different (and hopefully correct)
1267    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1268       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1269       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1270    o pkg/diagnostics: add options and parameters for regional-statistics
1271       diagnostics ; define regions by reading a region-mask from a file
1272       (might add other options later)
1273    o pkg/bulk_force:
1274     - add option and parameters to use AIM surface-flux formulae.
1275     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1276       others forcing fields (defined in PARM05, parameter file "data") are loaded
1277       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1278     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1279     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1280     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1281       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1282     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1283    
1284    checkpoint58
1285    o add "--embed-source" option to genmake2 which, when the supporting
1286      tools can be compiled (as determined by genmake2) will turn on the
1287      embed_files package which then embeds the entire MITgcm source code
1288      (*.[fFhc] + Makefile) used for the build within the executable
1289      - requested by CNH but off by default
1290      - adds a paltry <9MB to the mitgcmuv executable in most cases
1291      - only writes the output when useEMBEDSRC in eedata is true
1292    o clean up 3-dim. relaxation codes:
1293      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1294      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1295      * Thanks to Tom Haine for testing!
1296    
1297    checkpoint57z_post
1298    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1299      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1300    o fix the pickup behavior for obcs in combination with ptracers
1301    o fix a bug in ptracers_external_fields_load
1302    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1303      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1304    o transfered surface NH pressure to eta field (if exactConserv).
1305  o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)  o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1306       and update lab_sea output.txt file.       and update lab_sea output.txt file.
1307    o completing 3-dim. relaxation code: additional term
1308         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1309      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1310      * At compile time, in "EXF_OPTIONS.h" set
1311          #define  ALLOW_CLIMTEMP_RELAXATION
1312          #define  ALLOW_CLIMSALT_RELAXATION
1313      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1314          tauThetaClimRelax3Dim = 15552000.0,
1315          tauSaltClimRelax3Dim  = 15552000.0,
1316      * 3 cases:
1317          1) Use a constant-in-time 3-dim. field
1318          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1319          3) Real-time relax. to time-evolving prescribed field
1320    o Adding Laplacian-type smoothness constraint on
1321      initial and boundary (forcing) controls (ic, bc)
1322      * enable at compile-time via
1323        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1324      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1325      * Absolute scale somewhat unclear so far
1326      * no area weighting was included since no other cost term does so far
1327    
1328  checkpoint57y_post  checkpoint57y_post
1329  First step for a NLFS adjoint  First step for a NLFS adjoint

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