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revision 1.75 by jmc, Thu Jun 20 23:52:03 2002 UTC revision 1.998 by gforget, Fri May 30 02:53:14 2008 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o bridging the gap between eddy stress and GM.
8      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
9          along with a change in CPP option (now ALLOW_EDDYPSI).
10      -> when using GM w/ GM_AdvForm:
11          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
12          is applied either in the tracer Eq. or in momentum Eq.
13          depending on data.gmredi (intro. GM_InMomAsStress).
14      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
15      The key modifications are in model/src/taueddy_external_forcing.F
16      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
17    checkpoint59r
18    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
19      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
20      fix option to read coriolis(@ cell-corner) from files with CS-grid.
21    o pkg/mnc: add some attributes to standard 1D-coordinate variables
22    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
23      mass points, when using mnc for output
24      - add runtime parameter (missing_value, missing_value_int) to override
25        default (which is the value of getcon('UNDEF'))
26    o pkg/mnc: prepare mnc for the actual use of missing values with the
27      diagnostics package: small fix in mnc_cw_readwrite.template and more
28      initialisation of never used fields
29      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
30      versions
31    o pkg/thsice/thsice_ini_vars.F added default initial values so that
32      thermodynamics sea ice solver does not blow up when some initial fields
33      are missing.
34    o move from external_forcing_surf.F to ini_forcing.F
35      the p-coord. hack consisting in using pLoad to set phi0surf ;
36      update output of tutorial_global_oce_in_p (affected @ truncation level).
37    o Freshen up a bit hs94.1x64x5, notably:
38      remove rotationPeriod and tRef=5*0. (adjoint only), and add
39      exactConserv=.TRUE.
40    o pkg/generic_advdiff:
41      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
42      applies to files where Temperature & Salinity 2nd Order moments are used.
43    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
44      this uses a dynamically allocated internal state data structure
45      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
46      and requires a fortran 90 compiler
47    
48    checkpoint59q
49    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
50       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
51    o Refresh tutorial_global_oce_biogeo, notably:
52      - change bathymetry (put back seamounts in ACC, use hFacs)
53      - change EOS (POLY3 --> JMD95Z)
54      - use Bryan-Lewis vertical diffusivity
55      - use multidimensional advection
56      - remove old virtual virtual in dic pkg, now done through ptracer pkg
57      - change a couple of parameters in dic pkg
58    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
59    o pkg/obcs: change default to OBCSfixTopo = .true.,
60      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
61      - replace "debugMode" with "debugLevel .GE. debLevB"
62    o implementation of TAF directives for gchem,cfc,dic
63    o remove "exp5" (replaced by tutorial_deep_convection).
64    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
65      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
66      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
67      --> changes results in exp4, seaice_obcs
68    o tutorial_deep_convection :
69      update the set-up and increase resolution and domain size ; start
70      from pseudo initial conditions = output at t=120mn in order to see
71      something happening when running testreport.
72    o pkg/seaice: add os7mp as an advection scheme
73                  add check for advection schemes
74                  add a flag for restoring T and S underneath sea ice
75    o pkg/my82: add netcdf-support and diagnostics
76    o thsice pkg:
77      - Now hsMax limits snow height by turning it into ice following
78        flooding scheme (and now conserving energy)
79      - Slight rewriting of the formula in thsice_calc_thick.F
80      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
81      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
82    
83    checkpoint59p
84    o gchem / dic / cfc :
85      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
86      - add new parameter files: "data.dic" & "data.cfc" ;
87      - various re-arrangement in initialisation & header file ;
88      - fix tutorial_global_oce_biogeo for multi-threaded test.
89    o pkg/dic: test for "pickup_dic" file when restarting ;
90      if no pickup-file, can restart with a re-initialised pH (same as it did
91      before) providing pickupStrictlyMatch is set to False.
92    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
93      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
94    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
95      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
96    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
97     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
98       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
99    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
100       scheme to use for vorticty-term ;
101     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
102       (with default selectVortScheme, return to original discretisation)
103     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
104    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
105    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
106      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
107      also fix diagnostics VISCAHW & VISCA4W.
108    
109    checkpoint59o
110    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
111    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
112      move a few statemens out the main loop into separate loops
113    o pkg/shelfice:
114      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
115        (kg/m^2/s), does not break tests, because in verification/isomip,
116        rhoConstFresh=rhoConst (by accident)
117      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
118      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
119        new file model/src/seawater.F, so that they are available for all pkgs.
120      - convert potential temperature into in-situ temperature. This changes the
121        isomip tests => update tests
122    o add a flag writePickupAtEnd (default=true) to be able to suppress
123      writing a pickup at the last timestep
124    o tools/mpack-1.6 :
125      - disable automake (not working) and autoconf (not needed).
126      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
127        also cleaner with much less compilation warnings.
128    o pkg/profiles:
129      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
130      (for "less than 32 characters name" compiler requirement)
131    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
132      conditions that have a different sampling frequency than S/T/U/V obcs
133    o pkg/diagnostics (stats-diags):
134      - fix global Min/Max in case 1 processor get only empty tiles
135    o genmake2: replace (4 times)
136         make genmake_tc_1.o >> genmake_warnings 2>&1
137      with
138         COMM="$CC $CFLAGS -c genmake_tc_1.c"
139         echo $COMM >> genmake_warnings
140         $COMM >> genmake_warnings 2>&1
141      to make genmake2 always see the value of CC as specified in the optfile.
142    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
143      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
144      - modify verification advect_cs test to test SOM-advection on CS-grid.
145    o pkg/ctrl:
146      - Rewrite of ctrl_map_ini_ecco.F,
147        introducing a generic routine (ctrl_map_ini_gen.F).
148      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
149    
150    checkpoint59n
151    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
152      number in dedicate array "hdiag":
153      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
154        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
155      - many small changes (integer format) for large number of diagnostics
156      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
157        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
158    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
159      usingSphericalGrid, this allows to define the rotated grid coordinates
160      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
161      geographical coordinates according to the inverse of the rotation defined
162      by the Euler angles, so that Coriolis parameter and online-interpolation by
163      exf works with the geographical coordinates on XC/YC/XG/YG.
164      Naturally, this feature does not work with all packages, so some
165      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
166      profiles), because there the coordinates are assumed to be regular
167      spherical grid coordinates.
168    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
169      - introduce isopycnal diffusion coefficient control.
170    o tools/adjoint_options:
171      - additional control vector components.
172    o pkg/mnc: have mnc create marginally meaning full coordinate variables
173      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
174    o pkg/mypackage:
175      - add example of read/write pickup for state-var ;
176      - add entry points to the main code for state-vars diags & write-pickup.
177    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
178      transitions for useExfYearlyFields
179      - add new subroutine that determines the file to read from for
180        use*YearlyFields = .TRUE. and .FALSE.
181      - add a verification experiment to global_with_exf that tests
182        useExfYearlyFields with USE_EXF_INTERPOLATION defined
183    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
184      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
185      subroutines (which could be generated from a template, because they are
186      almost identical), for now they are included in obcs_prescribe_read.F for
187      simplicity
188    o pkg/exf:
189      - add a little more diagnostic to exf_interp_read (in analogy to
190        mds_read_field, can be turned off with debugLevel < debugLevA=1)
191      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
192        ugly but fast by unrolling short inner loops, inserting a unroll=8
193        directive in routine lagran, and splitting a loop and making do while the
194        outermost loop (the latter requires the intoduction of index arrays)
195    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
196    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
197      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
198    o verification/seaice_obcs: updated for restart test and latest options
199    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
200      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
201      for now this is only available for the C-grid code and also within
202      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
203    
204    checkpoint59m
205    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
206      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
207    o gad_som : fix flux output (& diagnostics) to have same units as other  
208      advection scheme fluxes (was previously multiplied by deltaT).  
209    o added verification/seaice_obcs both to test seaice open boundaries
210      and to provide an example matlab scrpt for generating them
211    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
212    o pkg/salt_plume: clean up salt_plume_frac.F to
213      remove redundancy in PlumeMethod 1 and 4
214    o pkg/kpp: added saltplume diagnostics
215    o pkg/obcs and pkg/seaice:
216      - do not set uice and vice to zero when OB*icefile are unspecified
217      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
218      - moved seaice tracer obcs after call to seaice_growth
219    o pkg/salt_plume: added various options for salt plume depth
220      criterion and for vertical distribution of the salt
221    
222    checkpoint59l
223    o pkg/ptracers: new version of ptracers pickup:
224      read meta file and write only fields which are needed to restart.
225      ( same logic as main pickup file ; also using pickupStrictlyMatch )
226    o pkg/seaice:
227      - add timescale for melting due to warm mixed layer as a means of
228        setting SEAICE_availHeatFrac more conveniently
229      - add a CPP-flag/runtime parameter check for flooding algorithm
230      - reformulated availHeat in seaice_growth.F to be independent of AREA
231    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
232      unit changes
233    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
234    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
235      SX vector computer.
236    o pkg/seaice:
237      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
238        seaice forcing fields can now be read only through pkg/exf
239      - removed some unused halos
240    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
241    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
242      or U/VICE from U/VWIND before computing U/VSTRESS
243    
244    checkpoint59k
245    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
246      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
247    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
248      all experiments pass when compile with un-initialised var. checking option.
249    o added pkg/salt_plume
250    o script to test restart (for now, in MITgcm_contrib/jmc_script)
251    o pkg/seaice: new read/write pickup version.
252      read meta file and write only fields which are needed to restart.
253      ( same logic as main pickup file ; also using pickupStrictlyMatch )
254    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
255    o lab_sea.hb87: modify the domain & update output.hb87.txt :
256      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
257      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
258      process. Fixed here by closing the domain at the Northern boundary.
259    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
260    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
261      a set of consecutive levels in/from a 3-D array.
262    o pkg/ptracers:
263      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
264      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
265    
266    checkpoint59j
267    o in pkgs: dic, obcs, offline, rbcs:
268      standard way to compute coeff. for time interpolation between 2 time reccords
269      which retains full precision (& make results less dependent on compiler).
270      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
271    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
272      packages instead of reading ice cover and wind speed separately
273    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
274     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
275      to allow to compile customized code before the update)
276    o cleaning-up:
277      - fix CPP instruction syntax in pkg/obcs
278      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
279        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
280      - fix some threads issue in IO parts.
281    o pkg/dic:
282      - add tons of "_d 0" (--> much better testreports !)
283       and then update outputs of tutorial_global_oce_biogeo
284    o pkg/mom_fluxform:
285      add a special version of momentum advection intended to conserve momentum
286      next to a bathymetry step or a coastline edge. (default = off = #undef)
287    o new read/write pickup version:
288      - for now, only implemented for main (mdsio) pickup file.
289      - write out only what is needed to restart; merge pickup_nh , pickup_ph
290        and main pickup together.
291      - read meta file; read only what is needed to restart; stop if a field
292        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
293        if it make sense (even if the restart is not perfect).
294      - if no meta file, assume that pickup to read corresponds exactly to
295        a pickup that would currently be written.
296      - read pickup written in the old format (until checkpoint59i) if it
297        recognizes an old meta file (no field-list).
298      - add a meta file in exp. which starts from a pickup: 2 cases:
299        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
300         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
301        b) a meta file describing the content of the associated pickup file
302         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
303    o pkg/mdsio & pkg/rw:
304      - new routine to read a meta file ; new set of routine to read
305        Multiple-fields file (with meta file).
306    o added open boundary conditions capability for seaice
307        HSNOW, HSALT, UICE, and VICE
308    
309    checkpoint59i
310    o adjoint:
311      * fix multiDimAdvection adjoint
312        (partial recomputation problem by TAF for fVerT(:,:,kDown)
313        and comlev1 size definition (maxpass vs. max. number of tracers)
314      * verification/global_ocean.90x45x15 adjoint now tests
315        NLFS and multiDimAdvection using DST3 (=30)
316      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
317    o pkg/kpp: add "_d 0" to real constant (if missing);
318      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
319      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
320    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
321      for internal parameters related to restart process (formerly from PARAMS.h)
322      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
323    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
324      as argument. (only atm2d & obcs write_pickup have not yet been updated)
325    o pkg/monitor:
326      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
327      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
328      - account for deep Atmosphere factor and density factor (anelastic)
329    o added open boundary conditions capability for seaice HEFF and AREA
330    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
331      thermodynamics
332      - requires a little reorganization, which affects the testreport results
333        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
334        so that now the conservative form is tested
335      - add a few comments
336    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
337    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
338    o add new diagnostics to seaice: advective, diffusive fluxes (only for
339      multidim-advection, for scheme 2 they are not filled) and transports,
340      thermodynamic growth rates
341    o change units of EmPmR (inside the code, + within coupling interface)
342      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
343      Affects results @ truncation level (cg2d match) and update output of
344       experiments: lab_sea(6), global_ocean.90x40x15(10),
345      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
346      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
347      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
348      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
349    
350    checkpoint59h
351    o pkg/exf:
352      - improve vectorization by moving if-statement out of loops in
353        exf_mapfields, exf_radiation
354      - exf_bulkformulae.F: introduce 2D fields and vectorize code
355    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
356    o testreport:
357      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
358        monitor & update offline_exf_seaice exp. output.
359      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
360    o pkg/seaice:
361      - bug fix in the evp solver: boundary conditions were affected be
362        masking of zMax/zMin (changes results)
363      - minor bug fix in boundary conditions in seaice_calc_strainrates
364        (changes results for no_slip)
365      - seaice_lsr.F: make interpolation of eta dependent on boundaries
366      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
367      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
368        stress formulation and no-slip boundary conditions
369    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
370      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
371    o pkg/seaice: a first HSALT time stepping equation has been checked in
372    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
373      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
374      without requiring DO-IF statements
375    o pkg/thsice:
376      use continuous power-law function for partition of energy between lateral
377      melting/freezing and thinning/thickening ; old code using step function
378      still available with #undef THSICE_FRACEN_POWERLAW
379      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
380    o testreport: change AD testing : check against results/output_adm.txt
381      using same scripts as for forward test.
382    
383    checkpoint59g
384    o adjoint testing: in preparation for changing testreport:
385      - output format: cost and grad written on separated lines
386      - ad output results in directory "results" (instead of "results_ad")
387    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
388    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
389    o pkg/ecco: allow user defined cost function contributions
390    o testreport:
391      Allow to choose (per experiment) the list of tested output variables
392       and the main variable (used to issue a pass/FAIL ) ;
393      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
394      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
395      Also modify printing of summary:
396       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
397       b) echo the list of tested variables in the individual summary.txt of
398          each experiment.
399    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
400      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
401      (but still depend on the tile decompostion of the domain).
402    o pkg/seaice: change a discretization detail to make the B-grid code
403      "more symmetric". This change is likely to remove all "ridges/leads" that
404      where quasi-aligned with the grid in B-grid solutions. It may also be
405      the solution to the stress coupling issues with the B-grid.
406    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
407      remove .cvsignore from input dir. (since testreport no longer run here).
408    o pkg/thsice:
409     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
410     - fix reshaping of sea-ice just after advection:
411       melt all the ice only if ice-volume is too small.
412     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
413       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
414     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
415    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
416      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
417    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
418      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
419      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
420      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
421      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
422      -> update output.txt
423    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
424     this affects truncation error: -> update output.txt of exp:
425      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
426      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
427    
428    checkpoint59f
429    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
430    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
431      a bounded range (in forward mode)
432    o pkg/ecco, ctrl, autodiff and mom_common:
433     internal parameter controls, completements of implementations
434    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
435    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
436      (not seem any difference in testing results).
437    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
438       at face corners.
439    o pkg/generic_advdiff:
440     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
441      loop range indices for computing vertical advection tendency
442      and do the calculation in the interior only (no overlap) ;
443      for now, only implemented for SOM advection (to save CPU time).
444     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
445    o exch2 adjoint
446      First set of changes:
447      - add exch2 hand-written adjoint templates
448      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
449        This will require cleanup in pkg/autodiff/*.F
450        (changed routines currently kept separate in verif. code/)
451      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
452        that used to hide exch2 or cubed-sphere specific code
453        (commented via 'cph-exch2')
454    o pkg/seaice
455      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
456    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
457       output of global_ocean.cs32x15.thsice .
458    
459    checkpoint59e
460    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
461      for B-grid vector (not yet tested) and C-grid vector (<- only used
462      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
463    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
464      (#ifdef ALLOW_SALT_PLUME)
465    o gather_2d/scatter_2d: removed halo regions
466    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
467      scheme and the corresponding test case (under front_relax dir). For now,
468      only available with Skew-flux form and not yet tested in realistic set-up.
469      adjoint: store directives updated, but gradient checks deteriorated,
470      so maybe GM/Redi adjoint is now broken.
471    o seaice adjoint
472      * add AREA, HEFF, HSNOW as control variable
473        (should not change lab_sea results)
474      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
475    o pkg/seaice:
476      * added computation of saltFlux in seaice_growth;
477        For time being, sea ice salinity is assumed constant
478        contribution of snow flooding to freshening of sea ice is neglected.
479        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
480        defaults to 0.0 in order to maintain backward compatibility.
481        Typical values for SEAICE_salinity are 4 to 10 g/kg.
482      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
483      * added SEAICE_availHeatFrac, which specifies fraction of surface level
484        heat content used to melt or grow ice
485      * commented out cap of HICE: it helps keep ice thinner
486      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
487      * applied OBCS T/S mask to HEFFM sea ice mask
488    
489    checkpoint59d
490    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
491     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
492     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
493    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
494     and change default value of parameter "GM_Small_Number";
495     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
496       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
497       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
498    o pkg/ecco: cost function when applying pkg/smooth to controls
499    o pkg/ctrl: add forcingPrecond run time parameter
500    o pkg/seaice:
501     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
502     - fix bug in metric terms of u-equation in LSR solver (implicit part),
503       changes verification/lab_sea
504     - rearrange implicit part of u-equation in LSR solver to make it easier to
505       read, understand, and debug. This causes changes at the truncation level.
506     - fix (serious) bug in the boundary conditions (sign error in the implicit
507       part) of the LSR solver. Changes all LSR results.
508     - fixed problem with HSNOW initialization to avoid thick snow when AREA
509       is initilized with small values - does not change lab_sea results.
510     - added HsnowFile initialization capability
511    o pkg/smooth: addition to model/src and pkg/ctrl so allow
512     initialization of pkg/smooth and application to control vector
513    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
514    o dependencies: pkg/profiles requires pkg/cal
515    o pkg/profiles:
516     - added option ALLOW_PROFILES_GENERICGRID
517         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
518         that interpolation information (grid points and coefficients) is provided
519         within the netcdf input files.
520         -> sample matlab scripts can be found in MITgcm_contrib/gael
521         that allow you to prepare netcdf input files.
522     - also modified: cleaner include statements, cleaner error print statements,
523       cleaner stops when error, and more tests of the netcdf input files consistency.
524    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
525    o pkg/seaice:
526     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
527       requires a new routine: seaice_diagnostics_fill.F
528     - make sure that seaice does not move if not forced (pressure replacement
529       method, Hibler and Ip, 1995), changes results
530     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
531     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
532       It is turned off by default (=-1.), because it changes the results.
533     - make it possible to read AREA from a file, too.
534    
535    checkpoint59c
536    o add S/R and diagnostics for oceanic mixed-layer depth
537    o move GMRedi call after all vertical mixing schemes (including KPP)
538    o pkg/thsice:
539     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
540      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
541    o pkg/obcs:
542     - bug fix for balance code
543    o pkg/seaice:
544      - allow values of SEAICE_elasticParm > 1
545      - add new parameter SEAICE_evpTauRelax as an alternative
546        to SEAICE_elasticParm
547      - make lsr boundary conditions free slip (by default), changes result
548      - add code for no slip boundary conditions for lsr
549      - set minimum of zeta to zero (and not 4e8) (changes results)
550      - add a cap on AREA after advecting AREA if seaice_growth is not called
551    o change calculation of Visbeck K:
552      - no longer depend on tapering scheme; instead, compute slope (limited
553        by GM_maxSlope). this is equivalent to what was comuted before with
554        clipping or linear tappering.
555      - fix vertical averaging (wrong by 1/2 level)
556      - leave the old version (but will not be maintained) within
557        #ifdef OLD_VISBECK_CALC / #endif
558      - update output of exp. ideal_2D_oce
559    o change error catch in calc_r_star to improve vectorization
560    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
561      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
562    o adjoint:
563      Re-organized adjoint checkpointing according to Matt Mazloff
564      (but with modifs/completions/cleanups)
565      Storing is now bundled into large arrays to optimized I/O
566      (and second step in cleanup of the_main_loop)
567    
568    checkpoint59b
569    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
570      - export/import (between ocean & coupler) fields needed for ocean DIC.
571    o pkg/seaice:
572      - get rid of three more exchanges seaice_calc_viscosities (required
573        different loop boundaries in seaice_lsr and seaice_ocean_stress)
574      - bug fix in seaice_ocean_stress (update of lab_sea required)
575      - reduce loop boundaries to necessary minimum also in seaice_evp
576      - go back to the old way of computing deltaC/Z as the adjoint likes that
577        better
578    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
579      passive tracer to an Age Tracer) + update output.txt
580    o pkg/exf:
581      - implement A-grid / C-grid selection for wind-stress input files.
582      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
583      for now, in exf_bulk_largeyeager04.F only :
584      - change implementation for case where windspeed + 2. components wind-stress
585        are read-in. AND use rhoConstFresh to convert evap.
586    o pkg/seaice:
587      - use correct EXCH_UV for wind-forcing (on A-grid).
588      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
589        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
590    o pkg/exf:
591      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
592      EXF_INTERPOLATION:
593      - merge global_with_exf/code version of exf_interp_read.F
594        to the main code ;
595      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
596        reading the file ; Important: This options needs to be defined to recover
597        previous code.
598        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
599      - no longer loose real*8 precision along the way when using exf_iprec=64.
600    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
601      - change discretisation of evp-solver in order to avoid another exchange
602        (changes lab_sea) and clean up a little
603      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
604        help the adjoint (this also changes the results slightly)
605      - add a few "_d 0" where they had been missing in seaice_evp.F
606      - cleaning up: remove unused seaice_calc_rhs.F
607    o pkg/exf: some cleaning-up:
608      - change various "constants" into runtime parameters
609      - cleaned-up Large&Yeager04 routine which should eventually
610        replace exf_bulkformulae.F (changed names of S/R and CPP)
611        and merged various ALLOW_ATM_WIND options
612     only used with thsice pkg (in thsice_get_exf.F):
613      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
614        which are used when useStabilityFct_overIce=TRUE (= the default)
615      - change default values of ice & snow emissivity and scale downward LW
616        by ice & snow emissivity.
617    o pkg/thsice:
618     fix few little problems, in thsice_calc_thickn.F:
619      - growth vertically (and not laterally) if iceFrac == iceMaskMax
620      - melt only laterally if hIce < hThinIce (as the comments say)
621      and in thsice_extend.F:
622      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
623      - start to form ice as soon as the minimum ice-volume is reachable.
624     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
625      and cpl_aim+ocn
626    o pkg/kpp
627     - move computation of surface related input fields to KPP into a new
628       subroutine kpp_forcing_surf.F
629     - remove wrong (within bi,bj loops) EXCH calls.
630     - little cleaning (add argument myThid in last position, cvs header ...)
631     - for now, fix conservation problem by exchanging KPPviscAz (may not
632       be the best fix)
633    o pkg/seaice
634     - check for inconsistent evp parameter/cpp-flag combination
635     - remove leftover errIO flat for obsolete name list error handling
636    o OpenAD
637     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
638    
639    checkpoint59a
640    o pkg/seaice: some parameter clarifications and a little bit of clean up
641    o pkg/thsice: rename run-time parameters:
642       himin       -> hIceMin
643       himin0      -> hThinIce
644       hihig       -> hThickIce
645       i0          -> i0swFrac
646       transCoef   -> bMeltCoef
647       frac_energy -> fracMelting
648      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
649       with default values (for now) that do not change the results.
650      remove old version of thsice vars advection in pkg/seaice.
651    o in FFIELDS.h:
652      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
653      - make pLoad & sIceLoad always available (but still only used if
654         ATMOSPHERIC_LOADING is #define).
655    o pkg/kpp: replaced _KPP_RL with _RL
656    o bug fixes for vertical diffusivity computations when both KPP and
657        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
658        are no longer updating the vertical diffusivity array
659        (passed as argument) but are (re-) setting those arrays.
660    o pkg/seaice: fix bug in evp solver, while doing that
661      - change (improve?) discretization of stress computations for both
662        cgrid-lsr and evp solver
663      - add a new routine to compute strain rates
664      - the above changes lab_sea results
665      - add no slip conditions for evp solver (off by default), lsr-version
666        may follow
667      - fix exchange for shear at Z-points (does not change lab_sea)
668      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
669        (to force the user to pick a time step since there is not "safe" way
670        of choosing it)
671      - add principal stress diagnostics
672      - rearrange fields for evp a little to avoid having to call a: too many
673        exchanges and b: exchanges for stress trensor components which we do
674        not have.
675      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
676        of evp, complete rewrite for lsr case (latter is does not yet work
677        in all cases)
678    o pkg/kpp: add code to have mixing in shelf ice caverns
679      - add myThid to all kpp routines (long overdue)
680    
681    checkpoint59
682    o pkg/exf:
683      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
684        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
685      - move exf header files from lower_case.h to UPPER_CASE.h ;
686        add missing cvs Header & Name
687      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
688      - add namelist param. selectStressGridPosition, exf_monFreq
689      - retire many _CLIM routines, and remove data.exf_clim
690        + params moved to data.exf
691        + climsst, climsss now handled by exf_set_gen, i.e.
692          climss?period=0 refers to constant field,
693          climss?period=-12 to monthly forcing
694      - split up namelists in data.exf
695    o pkg/seaice:
696      - remove seaice_exch and seaice_exch_uv
697      - remove superfluous exchange of theta
698      - add myThid to seaice_budget_ocean/ice
699      - add new interface for atmospheric wind forcing (C-grid only)
700        + new routine
701        + two new field (taux, tauy for stress over ice)
702        + removed one global field (DAIRN) for C-grid case only
703    o pkg/thsise
704      - 2nd set of modifs for thsice adjoint in conjunction with exf
705    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
706    
707    checkpoint58y_post
708    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
709      vertical diffusivity, similar to that in MOM4; turned on using
710      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
711      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
712    o Added capability for 3D specification of background vertical diffusion
713      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
714      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
715      "data" file that contains the 3D vertical diffusivity coefficients.
716    o ice dynamics (pkg/seaice) with thsice thermodynamics:
717      - add code within pkg thsice to advect & diffuse sea-ice fields
718      similar to (and will replace) what has been added in  seaice_advdiff.F,
719      but: - conserving Mass, Heat & Salt.
720           - better when using non-linear advection scheme (not yet fully tested)
721           - can also be used in atmospheric set-up (for now, only the diffusion).
722    
723    checkpoint58x_post
724    o IO option for global-file compact format:
725      - add options when generating topology (utils/exch2/matlab-topology-generator)
726      - add I/O capability (pkg/mdsio).
727      - adapt utils/matlab/rdmds.m to read this format.
728      for now long-line format not yet supported by pkg/mdsio (& exch2).
729    o shelfice: add a few diagnostics
730    
731    checkpoint58w_post
732    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
733      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
734      (and replace horiVertRatio in NH code).
735      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
736                         and tutorial_plume_on_slope (sensitive to truncation)
737    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
738      directly to drive seaice model (C-grid only)
739    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
740     - reintroduce computation of wind from stress,
741     - compute tau (in exf_bulkformulae.F) from windstress averaged to
742       mass points to avoid tau = 0
743     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
744    o rdmnc.m: make it work with "global" files created with gluemnc
745    o rdmnc.m : some improvements in dealing with singleton dimension
746      (tested on all testreport mnc output files).
747    o genmake2: disable pkg/profiles if netcdf test fails.
748    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
749    o move call to cal_readparms up to make calendar parameters/variable available
750      to all packages
751    
752    checkpoint58v_post
753    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
754      useDynP_inEos_Zc tested.
755    o pkg/exf: changes to properly interpolate/mask/scale initial fields
756    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
757      and portions thereof.  See read_cs.txt for description and examples.
758    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
759      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
760      following the great-circle arc between those 2 points.
761    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
762      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
763    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
764     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
765     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
766     - still needs work (not working with some options ; efficiency to improve)
767       and serious testing.
768     - use this scheme for temperature & salinity in 2 advection test exp.:
769       advect_xy & advect_xz, respectively.
770    
771    checkpoint58u_post
772    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
773    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
774    o testreport: add option "-skipdir" to skip some test.
775    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
776      momentum calculation.
777    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
778    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
779      remove checkpoint.F and the_correction_step.F (no longer used);
780      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
781    o add option (linFSConserveTr) to correct for tracer source/sink due to
782      Linear Free surface
783    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
784    o pkg/thsice: fix reading mnc-pickups
785    
786    checkpoint58t_post
787    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
788    o pkg/mdsio:
789     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
790       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
791       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
792     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
793     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
794       either MDS_READ_FIELD or MDS_WRITE_FIELD )
795     - new S/R (to replace MDSWRITEMETA), which allows to write more
796       informations (variable names, time ...) to meta files.
797     - modify rdmds.m to give back the meta file content.
798    o pkg/diagnostics: change vertical interpolation to be safer, and more
799       flexible (define p-levels to interpolate to in data.diagnostics);
800      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
801       diagnostic pointer.
802    o pkg/seaice: more cleaning up of seaice_growth, added many comments
803    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
804    o fix multi-category seaice:
805     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
806       SEAICE_MULTICATEGORY
807     - fix short wave heat flux
808    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
809       and allow to use EVP solver. Change forward lab_sea: test both EVP
810       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
811    o Initial check-in of lab_sea adjoint
812      (very similar to natl_box_adjoint/code_seaice)
813      * used C-grid and EVP solver
814      * used KPP, GM/Redi
815      * uses inAdExact=.TRUE.
816      * gradient checks fail for both ADM and TLM
817        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
818        f.d. gradients actually seem more problematic than ADM, TLM gradients;
819        issue is related to forward mismatch between g77 an ifort
820    o pkg/seaice: overhaul of thermodynamics
821     - growth.F and groatb.F are replaced by new routine seaice_growth.F
822     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
823     - move a few global fields out of SEAICE.h into seaice_growth.F and
824       make them 2D (FICE/QNETO/ ...)
825     - remove FO (it is the same as QNETO)
826     - introduce a few local fields to avoid modifying external fields such
827       as atemp, etc.
828    
829    checkpoint58s_post
830    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
831      changed exf_set_gen.F so that
832        genperiod=0 means input file is one time-constant field and
833        genperiod=-12 means input file contains 12 monthly means
834    o CG2D: use pre-computed solver main-diagonal (stored in common block);
835      this affects truncation error ; generate new output file for exp. which
836      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
837        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
838        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
839        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
840        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
841        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
842    o start implementation of deep-atmosphere and anelastic formulation
843    o verification: remove 2nd copy of input files and use script "prepare_run"
844      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
845    o mom_common/vecinv/fluxform: fix a few initialisation isssues
846    o profiles: fix for multithreaded case
847    
848    o diagnostics: rename few diags:
849      s/'PRESSURE'/'RCENTER '/g
850      s/'TICE    '/'oceFreez'/g
851      s/'TAUX    '/'oceTAUX '/g
852      s/'TAUY    '/'oceTAUY '/g
853      s/'SWFLUX  '/'oceQsw  '/g
854      s/DIFx/DFxE/g
855      s/DIFy/DFyE/g
856      and add few ocean-forcing diagnostics:
857      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
858    o modifications to pkg/seaice/growth.F and budget.F, which change results of
859      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
860      as actual snow thickness.  It now refers everywhere to effective snow
861      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
862    
863    checkpoint58r_post
864    o modifications to pkg/seaice/growth.F, which change results of
865      lab_sea experiment: fixes pertain to melting snow over open water, to
866      masking EVAP under sea ice, and to using the correct AREA variable for
867      computations of EVAP, PRECIP, HSNOW, and GHEFF
868    o add ability to read bathy, salt, and theta using MNC (off by def)
869    o add flooding algorithm and advection of HSNOW for pkg/seaice;
870      both are turned off by default and do no change any results
871    o seaice advection with pkg/thsice: a step toward the use of non-linear
872      advection scheme, but #ifdef or commented out for now (requires more EXCH).
873    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
874      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
875      in natl_box (affects results @ truncation level: update output.txt)
876    o multi-threading and IO:
877      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
878      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
879        (needed to work with SingleCpuIO): tested in all verif. exp.
880    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
881      affects the results (but none of the verification test uses this scheme).
882    o Adding some pkg/diagnostics capability to pkg/seaice
883      (will certainly be subject to changes)
884    o ctrl: adding new control variables:
885      lwflux, lwdown, evap, snowprecip, apressure, runoff
886    
887    checkpoint58q_post
888    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
889      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
890      high_res_cube configuration by 4% on Columbia.
891    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
892      add (in global_with_exf/code) a version of EXF_INTERP_READ without
893      dynamical allocation (seems to work in multi-threaded).
894    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
895      single CPU io) so that TAF does not have to see EESUPPORT.h
896    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
897    
898    checkpoint58p_post
899    o obcs: stop if obcs is used with useCDscheme = .true.
900    o shelfice:
901     - fix a sign error so that no slip at shelfice interface works
902     - remove stop for combination non-hydrostatic code and shelfice. That does
903       not mean, that the results are correct, but at least they are numerically
904       stable
905    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
906    o added adjoint exch routined for all exch*3d* routines
907      and updated flow directives
908    
909    checkpoint58o_post
910    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
911      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
912    o change controling S/R for writing pickup file (new S/R do_write_pickup)
913      and clean-up reading/writing of pickup files.
914    o fix local version of read/write pickup (NH part) in rotating_tank/code
915    o simplify EXCH interface:
916     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
917     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
918    o added the regrid package
919    o shelfice:
920     - add a simple boundary layer scheme to reduce noise
921     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
922    
923    checkpoint58n_post
924    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
925       local variable (not in common block).
926    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
927      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
928      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
929        to work with SingleCpuIO.
930    o add "_d 0" to real constant of pkg/cfc subroutines ;
931       update exp. cfc_exemple & tutorial_cfc_offline output files.
932    o multi-threading and IO:
933      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
934        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
935      - barrier before and after reading.
936      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
937      - avoid using MDS_WRITELOCAL for LAND pkg output.
938      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
939        common-block variables ; Allows multi-threading with master-thread IO.
940    o change default MAX_NO_THREADS from 32 to 4 ;
941      and stop cleanly when MAX_NO_THREADS is too small.
942    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
943    
944    checkpoint58m_post
945    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
946       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
947    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
948       keep global_ocean.90x40x15 (for AD testing) with former secondary test
949       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
950    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
951        add MITgcm_tutorials (= code + all the tutorials)
952    o ecco, option to compute cost for total ssh (mean+anom)
953    o consistent with addition of ptracer and ssh in pkg/profiles
954    o profiles: adding ptracer and ssh
955    o testreport: change multi-test output-file name
956      (from output.txt.{name} to output.{name}.txt)
957    o profiles: now ok for mutli-tiles case
958    o seaice: add 4 parameters for different advection schemes for area,
959      (effective) seaice thickness, enthalphy, and snow height. Their default
960      is the standard parameter SEAICEadvScheme
961    o calc_gw:
962     - add cosFacU in zonal viscous flux (harmonic.visc.).
963     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
964       of tutorial_plume_on_slope.
965    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
966    o calc_gw: true flux-form, account for horizontal grid spacing.
967      update rotating_tank results, but not plume_on_slope (affected at
968      truncation level, 11 digits).
969    
970    checkpoint58l_post
971    o calc_gw:
972     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
973     - remove side-drag for now (need to fix it); update plume_on_slope results.
974     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
975    o commit code to make SST/SSS weights spatially variable
976      (based on either variable in-situ or variable initial T/S weights)
977    o pkg/ecco:
978      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
979        now based on horizontally varying weights wthetaLev, wsaltLev
980      * cost_averagesflags now returns year indices in addition to day, month
981      * sflux balance is performed on annual basis
982        (sflxumm, sfluxmm2, bal_sfluxmm)
983      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
984        including separate counting and multipliers
985    o pkg/rbcs
986      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
987    
988    checkpoint58k_post
989    o testreport:
990     - always build in dir. "build" (if not there, mkdir build instead of building
991       & running in input)
992     - run in dir run (if it exists), in build otherwise.
993     - call prepare_run (if input/prepare_run exists)
994     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
995    o pkg/exf modifications to interpolation and rotation routines for more
996       reasonable treatment of North Pole singularity: for tracers North Pole
997       value is set to northernmost zonal-mean value, for zonal velocity it is
998       set to zero, and for meridional velocity it is set to northernmost value.
999    o pkg/exf/exf_check_range.F
1000     - add tile index to diagnostics and move stop statement to the very
1001       end of the routine.
1002    o pkg/diagnostics: (diagnostics_main_init.F)
1003      define title of isomorphic variables according to the current config.
1004    o pkg/thsice with pkg/seaice dynamics:
1005    - fix domain of computation (interior only, required for exf) and do exchanges
1006    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1007    o towards a standard way of dealing with multi-threading in MONITOR
1008      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1009    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1010       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1011    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1012    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1013    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1014       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1015    o tracer advection:
1016     - clean-up and simplify calc_common_factors.F
1017     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1018       advection subroutine (but still not used within DST advection S/R)
1019    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1020    
1021    checkpoint58j_post
1022    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1023      from file (collects calls previously in FORWARD_STEP)
1024    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1025    o adjoint store dir. adjusted accordingly
1026    o genmake2
1027      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1028    
1029    checkpoint58i_post
1030    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1031      on wind stress (SEAICEstressFactor defaults to 1.)
1032    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1033      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1034    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1035      on CS-grid: no longer loosing mass.
1036    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1037    o pkg/ggl90: fix sloppy output and fix a bug
1038    o pkg/seaice: added SEAICEuseEVPpickup parameter
1039      - Set to false in order to start EVP solver with
1040        non-EVP pickup files when using SEAICEuseEVP
1041      - fix sign error in diffusion in seaice_calc_rhs
1042    
1043    checkpoint58h_post
1044    * Modifications for bottom topography control
1045      o replace hFacC by _hFacC at various places
1046      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1047      o add non-self-adjoint cg2d_nsa
1048      o update autodiff support routines
1049      o re-initialise hfac after ctrl_depth_ini
1050      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1051    * Adding verification for 5x5 box (4-layer) bottom topography control
1052    
1053    checkpoint58g_post
1054    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1055       used for mean seasonal cycle, mean diurnal cycle); add an example
1056       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1057    o pkg/ggl90:
1058      - add parameter (minimum surface kinetic energy)
1059      - fix bug (avoiding division by zero)
1060    o couple pkg/thsice to pkg/seaice:
1061      - modify advection in seaice to accomodate new scalar fields to be advected
1062      - only muliDimAdection scheme work with seaice/thsice
1063      - mapping of thsice-variables to seaice-variables, back and forth
1064      - does not break the verification experiments, but does not give the
1065        desired results either
1066    o pkg/seaice
1067      - make (default) second order advection a bit less confusing?
1068    
1069    checkpoint58f_post
1070    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1071      to pkg/seaice):
1072      - new routines thsice_map_exf and thsice_get_exf provide the interface
1073      - add an additional formal parameter to thsice_solve4temp
1074    o pkg/exf:
1075      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1076      - correct Stefan-Boltzmann constant
1077      - new parameter for longwave surface emittance
1078      - separate some stuff from exf_bulkformulae into new routines  
1079        exf_radiation, exf_wind
1080      - add new parameters and constants: longwave emissivity for ocean, ice
1081        and snow, evaporation parameters over ice
1082      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1083        either wind from stress or stress from wind
1084    o pkg/thSIce:
1085    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1086    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1087       and THSICE_CALC_THICKN
1088    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1089    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1090      to make debugging easier.
1091    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1092    o pkg/bulk_force:
1093      - clean-up comments and parameters ;
1094      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1095    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1096      generate new output for test-experiment: aim.5l_cs.thSI
1097    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1098      testreport accordingly
1099    
1100    checkpoint58e_post
1101    o SEAICE_CGRID adjoint done
1102    o R_STAR adjoint implemented.
1103      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1104      * need to sort out init. of h0facc, etc.
1105    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1106      to be able to use it in pure forward.
1107    
1108    checkpoint58d_post
1109    o upgrade simple test-experiment to tutorial example:
1110     step.1: duplicate the experiment and (step.2) will remove the old copy.
1111      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1112      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1113      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1114      tutorial_global_oce_biogeo    <- copy of dic_example
1115      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1116      tutorial_plume_on_slope       <- copy of plume_on_slope
1117      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1118      tutorial_global_oce_optim     <- empty for now (David ?)
1119      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1120     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1121    o correct a sign problem in cost_scat.F
1122    o obcs and ptracers: fix boundary conditions for advections schemes
1123      with larger stencil
1124    o thsice adjoint: start
1125    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1126      completeness
1127    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1128      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1129    o ptracers adjoint:
1130      * avoid extensive recomputatations
1131      * fix missing re-init. of gptr (missed by TAF)
1132    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1133      me to turn off the excessive output to STDOUT that this package produces
1134    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1135      and add those terms in Vector-Invariant formulation.
1136    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1137      if the control period (xx_hfluxperiod etc) is 0
1138    o in profiles pkg, clean routines and fix details
1139    o in ecco pkg, reading ssh data:
1140      fix problem in case the model does not start at iter0=0
1141    o fix mnc-pickup/restart for ptracers
1142    o new package prifiles:
1143      code to compute profile-based cost by Gael Forget
1144      (modifs in ecco, ctrl, autodiff)
1145    o Benign bug fix in initialization (spotted by M. Mazloff) of
1146      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1147    
1148    checkpoint58c_post
1149    o adjoint: finish NLFS adjoint and provide reference output in
1150      verification/global_ocean.90x40x15/results_ad_nlfs
1151    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1152      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1153      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1154      with SEAICE_CGRID defined.
1155    o move calendarDumps from "data" to "data.cal" and clean-up the code
1156      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1157    o add useEXF & useCAL flags (for now, set in hard-coded way)
1158    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1159      (were missing in NH mode, and wrong in quasihydrostatic mode).
1160      waiting for Chris updated version of calc_gw to add those CALLs.
1161    o fix bug in quasihydrostatic S/R ;
1162      add a test for this option: global_ocean.90x40x15.qshyd
1163    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1164      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1165    o add on/off flag useOffLine for package OFFLINE
1166    o seaice:
1167      - modify advection so that it works also on the C-grid
1168      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1169        problem in multi-tile runs with C-grid
1170      - add flags for clipping ice velocities and/or masking solver forcing
1171      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1172        C-grid solver
1173      - added a few comments to seaice_diffusion.F
1174      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1175        are now exclusive)
1176      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1177        required re-ordering the code a little:
1178       + make DAIRN global variable (defined in SEAICE)
1179       + move computation of the viscosities eta and zeta into a new separate
1180         routine (because I need to recompute them in seaice_ocean_stress.F)
1181    
1182    checkpoint58b_post
1183    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1184      update output.txt of exp. aim.5l_cs.thSI
1185    o various mnc cleanups and improvements:
1186      + shrink lookup tables by factor of ~4
1187      + better error reporting when running out of lookup space
1188      + able to handle longer path/file names (up to 500 chars)
1189    o adjoint:
1190      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1191      - TBD: "hidden" mom_vecinv recomp. in dynamics
1192    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1193     (allow to differentiate between forcing components using new integer flags:
1194      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1195     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1196    o ecco
1197      - enable trend removal from SSH anomaly obs.
1198    o adjoint
1199      - a fix for PmEpR when #undef EXACT_CONSERV
1200      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1201      - try to fix "hidden" recomp. in forward_step for NLFS
1202        (NLFS seems broken sometimes after I checked it in)
1203    o seaice:
1204     - add c-grid version of the dynamic solver:
1205       + three new routines that are the c-grid substitute lsr, dynsolver
1206         and ostres
1207       + put a few fields that were local to dynsolver into global common
1208         blocks, so that I can move the computation of stresses etc into
1209         seaice_lsr (saves coding but may break the adjoint).
1210     - replace more hardwired parameters by runtime parameters
1211     - add ice masks that mask the rhs of the implicit solvers where there
1212       is no ice (commented out in seaice_dynsolver, because i am not sure
1213       if this works properly), eventually this should replace the clipping
1214       of ice velocities in seaice_dynsolver to +/-40cm/s.
1215    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1216      include it only where its needed
1217    o move balancing of fluxes before the call of external_forcing_surf
1218    o seaice:
1219      - correct units of turning angles (now they are really in degrees)
1220      - move computation of GWATX/Y out of main routine into dynsolver
1221      - initialize GWATX/Y in seaice_init
1222    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1223      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1224    o seaice: add runtime flags for turning angles (default to zero)
1225    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1226      and trend from exf forcing and ctrl control adjustments
1227    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1228      (since checkpoint57x_post)
1229    o change the default rotation period to 86164.s = the Earth rotation
1230    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1231      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1232    o seaice advection: add code for choosing between the default (2nd order
1233      central differences) and multiDim advection schemes provided by
1234      pkg/generic_advdiff
1235    o seaice:
1236      - removed all references to SEAICE_GRID.h fields from
1237        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1238        (cubed-sphere configuration will change a little)
1239      - grid computations in seaice_init are obsolete now.
1240      - cleaned up code a little so that is easier to read (hopefully).
1241      - added new (better?) discretizations of default advection and diffusion
1242        (turn on with SEAICEuseFluxForm)
1243      - replace 1 in 3d global fields by kSurface in growth.F
1244      
1245    checkpoint58a_post
1246    o seaice:
1247      - bug fix in advect.F
1248    o shelfice:
1249      - separate shelfice load anomaly from pload (breaks with time
1250        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1251        Its default is 0., but it may be computed more cleverly from (unknown)
1252        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1253        done offline. A good approximation of the pressure load anomaly is
1254        necessary to avoid large initial adjustment processes underneath
1255        deep-reaching shelfice.
1256      - small fix in ISOMIP shelfice_thermodynamics
1257      - add more sophisticated thermodynamics of Hellmer (1989), this is
1258        now the default
1259      - give a few constants more intuitive names
1260    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1261      if bulk formulae are used in long integration (especially EmPmR). Turn
1262      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1263      if balancePrintMean, the imbalance that is substracted is printed to
1264      STDOUT.
1265    o fix bug (typo) in obcs_apply_eta.F
1266    o add a new package shelfice which enables us to model the circulation
1267      underneath shelf-ice with draughts of hundreds of meters.
1268     - works
1269     - to do: + include improved thermodynamics
1270              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1271                instead of new field kTopC
1272              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1273                instead of new field R_shelfIce and new code in ini_depth.F
1274                and ini_mask_etc.F?
1275              + adjust vertical mixing schemes?
1276    o seaice pkg:
1277     - add a cpp-flag to include a simple formula for a salinity dependent
1278       freezing point of sea water at the surface
1279     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1280       meridional stresses are now different (and hopefully correct)
1281    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1282       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1283       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1284    o pkg/diagnostics: add options and parameters for regional-statistics
1285       diagnostics ; define regions by reading a region-mask from a file
1286       (might add other options later)
1287    o pkg/bulk_force:
1288     - add option and parameters to use AIM surface-flux formulae.
1289     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1290       others forcing fields (defined in PARM05, parameter file "data") are loaded
1291       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1292     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1293     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1294     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1295       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1296     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1297    
1298    checkpoint58
1299    o add "--embed-source" option to genmake2 which, when the supporting
1300      tools can be compiled (as determined by genmake2) will turn on the
1301      embed_files package which then embeds the entire MITgcm source code
1302      (*.[fFhc] + Makefile) used for the build within the executable
1303      - requested by CNH but off by default
1304      - adds a paltry <9MB to the mitgcmuv executable in most cases
1305      - only writes the output when useEMBEDSRC in eedata is true
1306    o clean up 3-dim. relaxation codes:
1307      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1308      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1309      * Thanks to Tom Haine for testing!
1310    
1311    checkpoint57z_post
1312    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1313      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1314    o fix the pickup behavior for obcs in combination with ptracers
1315    o fix a bug in ptracers_external_fields_load
1316    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1317      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1318    o transfered surface NH pressure to eta field (if exactConserv).
1319    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1320         and update lab_sea output.txt file.
1321    o completing 3-dim. relaxation code: additional term
1322         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1323      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1324      * At compile time, in "EXF_OPTIONS.h" set
1325          #define  ALLOW_CLIMTEMP_RELAXATION
1326          #define  ALLOW_CLIMSALT_RELAXATION
1327      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1328          tauThetaClimRelax3Dim = 15552000.0,
1329          tauSaltClimRelax3Dim  = 15552000.0,
1330      * 3 cases:
1331          1) Use a constant-in-time 3-dim. field
1332          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1333          3) Real-time relax. to time-evolving prescribed field
1334    o Adding Laplacian-type smoothness constraint on
1335      initial and boundary (forcing) controls (ic, bc)
1336      * enable at compile-time via
1337        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1338      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1339      * Absolute scale somewhat unclear so far
1340      * no area weighting was included since no other cost term does so far
1341    
1342    checkpoint57y_post
1343    First step for a NLFS adjoint
1344    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1345    o new init. routines for calc_r_star, calc_surf_dr
1346    o still need to deal with ini_masks_etc
1347    o testreport seemed happy
1348    checkpoint57y_pre
1349    
1350    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1351    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1352    o add new offset feature to offline pkg (plus minor cleanup)
1353    o cfc fixes for final year of integration
1354    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1355      be in GCHEM_OPTIONS).
1356    
1357    checkpoint57x_post
1358    o fix testreport Pb in multiple test experiment.
1359    o cleanup our namelist syntax in verification:
1360      - make it more F95 standards compliant (some work still needed)
1361      - allows the vast majority of our tests to work with gfortran
1362    o Non-Hydrostatic:
1363     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1364     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1365    o Allow to apply AB on T,S rather than on AB(gT,gS):
1366     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1367     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1368       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1369     - need a "clever" read_pickup to restart from the other AB formulation
1370    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1371    o remove some unused variables (reduces number of compiler warnings)
1372    o adjoint
1373      * Disable useVariableViscosity for adjoint for time being
1374        (there are a number of extensive recomputations)
1375      * Initialize certain variables needed for adjoint
1376    
1377    checkpoint57w_post
1378    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1379                 fix the singleCpuIO RS version of MDSWRITEFIELD
1380       and add a WARNING if using globalFiles=T with multi-processors.
1381    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1382      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1383    o tracer advection scheme:
1384      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1385       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1386       was not very convenient).
1387      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1388       (further tests needed for the implicit DST & Flux-Limiter schemes).
1389    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1390      and sRef for convenience, handy, when you want to initialize
1391      ptracers in a large domain with a constant non-zero value. Also,
1392      untangle ptracers_init.F a little.
1393    
1394    checkpoint57v_post
1395    o change dome exp. to use variable viscosity in side-drag terms.
1396    o remove all the files from the cfc_offline test since they are now
1397      incorporated into tutorial_cfc_offline which has been producing
1398      identical results for a few days of testing
1399    o add new parameter: sideDragFactor to enable half-slip-side BC
1400      and change side-drag S/R to use viscosity from mom_calc_visc
1401      (can switch back by setting sideDragFactor=0.); affects results at
1402      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1403       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1404    o vorticity & strain are now computed without masking, to account for
1405      no-slip-side BC in variable viscosity calculation ; mask is applied
1406      anyway later on, before computing advection/coriolis terms.
1407    o modify exp4 to test new obcs support for reading from external files
1408      and for passive tracers
1409    o fix behavior of ptracers_monitor when monitor output is written to a
1410      netcdf-file; still not independent of monitor.F (writes in the same
1411      file).
1412    o change default value of tRef (put a uniform, meaningful value for ocean
1413      & atmos) and initialize sRef (was missing, as Martin mentioned).
1414    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1415      to be proportional to enstrophy dissipation length.  Thus,
1416       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1417      This is now consistent with Smagorinsky and with the manual.
1418    
1419    checkpoint57u_post
1420    o OBCS and PTRACERS: add open boundary support for passive tracers
1421      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1422        OB-values from file; this is not different from the way theta and salinity
1423        are treated
1424      - however, Orlanski-radiation conditions are not supported, and the model
1425        will stop if you use pTracers and Orlanski at the same time.
1426      - beefed up the rountine obcs_external_fields_load: now only those open
1427        boundary values are overwritten with values from files for which there
1428        are really files, otherwise the OB-fields remain untouched. This makes
1429        it possible to use different OBs at different ends of the domain (as
1430        with EXF)
1431    o reduce number of exch calls in shap_filt (s2).
1432    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1433      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1434    
1435    checkpoint57t_post
1436    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1437    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1438      same truncation, independent of the face number: affects affects several
1439      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1440    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1441      note that biharmonic viscosity + no-slip was not tested in any experiment.
1442    o fix bug in non-linear free-surf side-drag ; generate new output for
1443      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1444    o make mnc honor the writeBinaryPrec flag for most kinds of output
1445    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1446    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1447      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1448    o add brackets in multi-terms sum to get same truncation, independent of
1449      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1450      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1451    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1452      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1453      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1454      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1455      Suggested values of viscosity parameters found in mom_calc_visc.
1456      Many new viscosity diagnostics available.
1457    
1458    checkpoint57s_post
1459    o Add clearing-house for viscosity calculations, mom_calc_visc and
1460      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1461      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1462      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1463      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1464      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1465      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1466      ViscAhStrain and viscAhTension are now retired.
1467    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1468    o In response to JMC's bug report, genmake2 now ignores any soft-links
1469      that it finds in the *current* directory when searching for files.
1470      Soft-links found in any other source directories will still work as
1471      they did before.
1472    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1473      a C routine to unlimit the stack size
1474    o mnc-ify pkg/aim snapshot vars
1475    o mnc-ify pkg/land as requested by Daniel
1476    o various changes to mnc including:
1477      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1478      - output can now be grouped so that all files within a group
1479          change the ITER portion of their names in lock-step together
1480      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1481          and works with both EXCH1 and EXCH2 (but needs more testing)
1482      - writing works for all verification test cases w/ g77 on Linux
1483    
1484    checkpoint57r_post
1485    o make MNC variable initialization happen earlier
1486    o add diagnostics for (almost) each term of the momentum Eq.
1487    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1488    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1489    o remove MINIMAL_TAVE_OUTPUT option ;
1490      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1491    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1492      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1493    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1494    o add time-dependent SST, SSS control
1495    o cost terms in ecco/ modularized (new cost_generic.F)
1496    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1497    o new infrastructure for seaice model vs. obs misfits in seaice/
1498      * driver from the_main_loop.F is seaice_cost_driver.F
1499      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1500      * gradient check in Exp. 6a of natl_box_adjoint/
1501    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1502      (see README file)
1503    
1504    checkpoint57q_post
1505    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1506    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1507      - bug was reported by Jean-Michel and Ian Fenty
1508    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1509      update exp. cpl_aim+ocn output.
1510    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1511      Needed for high-res. runs with large global files
1512      to be able to limit tapelev size
1513    o Changed some tests for adjoint:
1514      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1515      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1516      * global_ocean.90x40x15/ back to default 3-level checkpointing
1517    o Modifications to enable scripted COMMON to MODULE conversion
1518      * verification/OpenAD/code/ has necessary scripts and description;
1519      * converts, compiles and runs successfully;
1520    
1521    checkpoint57p_post
1522    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1523    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1524      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1525    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1526    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1527      (was already the case for dissipation with mom_vecinv,
1528       and also the case for grad.PhiHyd when staggered-timeStep)
1529      This will allow to put dissipation out-off the AB time-stepping.
1530     Unfortunately, affects truncation error. Update output of exp. that "fails"
1531      (cg2d matching number) and leave the others for later: front_relax(10),
1532      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1533      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1534    
1535    checkpoint57o_post
1536    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1537      (2) its ready to be documented during the 20050801 DocFest
1538    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1539      for ideal_2D_oce and lab_sea on linux_ia32_g77
1540    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1541      in global1x1_tot/code_seaice_adj to access indices 32, 33
1542      (worth another tag)
1543    
1544    checkpoint57n_post
1545    o adding precip control xx_precip 32
1546    o adding swflux control xx_swflux 33
1547    o Replacing 10 forcing penalty cost routines by 1 generic.
1548    o Implementing partitioning in time-mean and variable adjustment
1549      for atmos. state.
1550    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1551    o in natl_box_adjoint:
1552      * updated exp 1 to 10
1553        (but does not have time-mean vs. variable split results yet)
1554    o updated global1x1/*_seaice_adj/
1555      to incorporate latest changes
1556    o enable useSingleCpuIO for mdsio vector routines
1557      (applies in particular to tapelev I/O)
1558    o removed inefficient K-loop in all active_file*control*.F
1559    
1560    checkpoint57m_post
1561    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1562      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1563    o pkg/exch2: filling of face-corner halo regions is optional
1564      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1565    
1566    checkpoint57l_post
1567     tag before updating tutorials (pre-release-2)
1568    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1569       for output and interpolation of input fields onto model grid)
1570    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1571       Affects results of exp. rotating_tank ; update output.txt.
1572    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1573          and taking the square quantity and/or using a fraction-weight field.
1574    o fix aim_diagnostics_init.F mate numbers.
1575    o add mnc output capability to diagnostics/diagstat and update
1576      our cvsignore files for the ACSII output generated
1577    
1578    checkpoint57k_post
1579    o lab_sea now uses diagnostics package and provides a suite of
1580      new EXF diagnostics output.
1581    
1582    checkpoint57j_post
1583    o exf
1584      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1585        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1586        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1587      * extended diagnostics output
1588        - now includes all EXF variables
1589        - hs, hl moved to common block
1590        - separate S/R for diagnostics, called after ctrl vector is added
1591        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1592        - EXFqnet contains true Qnet (i.e. includes qsw)
1593      * updated verif. lab_sea, global_with_exf
1594      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1595        to ensure that diagnostics sees a true EXFqnet
1596    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1597    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1598      several times with different frequencies.
1599    o mnc-ify the thsice package as requested by Daniel Enderton
1600      - the monitor--MNC output needs work
1601      - many attributes need to be added (most are currently blank)
1602    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1603      - many attributes need to be added (most are currently blank)
1604    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1605    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1606    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1607      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1608         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1609    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1610     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1611    
1612    checkpoint57i_post
1613    o Diagnostics package was changed: diagnostic allocation is now deactivated
1614      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1615    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1616      add 1rst Order upwind vertical Shear.
1617    o add a quick fix for A/B checkpointing in OFFLINE mode
1618    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1619      end-run around the C/Fortran linking horror in eesup/src/timers.F
1620    o added pkg/runclock: allows user to terminate run based on wall clock
1621    o added non-hydrostatic scaling parameter: nh_am2
1622    o pkg/my82: futile attempt to make results compiler-independent by adding
1623      some "_d 0", etc. no effect.
1624    o for mnc output, fill the 'T' coordinate var with myTime and create a
1625      separate 'iter' variable for iteration count
1626    o pkg/diagnostics:
1627      add new capability: output of Global/Regional & per-level statistics ;
1628      tested against monitor output (including land & thSIce) on various exp.
1629    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1630    
1631    checkpoint57h_done
1632      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1633      data.diagnostics, data.gchem, data.ptracers) is done.
1634    
1635    o pkg/diagnostics: prepare for Global/Regional statistics.
1636      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1637    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1638      and rename it: DIFFERENT_MULTIPLE
1639    
1640    checkpoint57h_post
1641    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1642    o pkg/diagnostics: change output frequency, now in seconds (instead
1643      of Nb of iterations). This requires to change data.diagnostics.
1644    checkpoint57h_pre
1645    
1646    o in mnc, let the user create the output dir if both mnc_outdir_date
1647      and mnc_outdir_num are false
1648    o add fflags() to pkg/diagnostics which allows one to specify, on a
1649      per-file basis, the file precision [default behavior is unchanged]
1650    o added diagnostics to pkg/kpp, including computation of mixed layer
1651      depth based on a temperature/density criterion
1652    o updated verification/natl_box to test the new pkg/kpp diagnostics
1653    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1654    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1655    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1656      not mnc -- this mistake was found by JMC and is now corrected
1657    
1658    checkpoint57g_post
1659    o add Adams-Bashforth 3rd Order time stepping:
1660      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1661      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1662    checkpoint57g_pre
1663    
1664    o make lambda[Theta,Salt]ClimRelax spatially varying
1665      (default remains spatially uniform constant based on tau)
1666    o added new control variables
1667      * init. uVel, vVel, etanN
1668      * lambda[Theta,Salt]ClimRelax
1669    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1670      (suggested by G. Forget)
1671    
1672    checkpoint57f_post
1673    o add parameter "baseTime" = model base time = time at iteration zero
1674      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1675      account for baseTime shift
1676    o move Coriolis arrays from PARAMS.h to GRID.h
1677    checkpoint57f_pre
1678    
1679    o mnc-ifying the seaice package
1680    o introduced an alternative length scale calculation for use in the limiting
1681      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1682    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1683    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1684      as well as grad(vort3).  Made it compatible with both approximate form
1685      for the cubed sphere and full form of these gradients.  Added flag
1686      useFullLeith to select between approximate and full form.  
1687    o add "d0" in getcon.F to reduce differences between compilers/platforms
1688      update output.txt of exp. fizhi-gridalt-hs
1689    o change port_rand funtion to allow to set the seed.
1690    o fix obscure MNC bug involving conversion between reals and integers
1691      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1692        new version is now more standards-compliant
1693    o adjoint-related modifications
1694      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1695      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1696      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1697    
1698    checkpoint57e_post
1699    o Adding eddy stress controls a la Ferreira et al.
1700    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1701    
1702    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1703      update output.txt of exp. fizhi-gridalt-hs
1704    o add more "Z" dimensions and associated coordinate vars to MNC
1705    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1706    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1707      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1708      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1709      months and years.  Requires pkg/cal.
1710    o diagnostics: add pickup functionality
1711      - off by default for backwards compatibility
1712      - current version only uses MDSIO -- MNC will be added
1713    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1714    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1715    
1716    checkpoint57d_post
1717    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1718    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1719      output from the diagnostics package
1720    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1721    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1722      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1723    o add coordinate variables to the MNC output from the diagnostics package
1724    o change MNC-flags default value: true when useMNC=TRUE
1725    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1726      the ability (off by default) to read the grid information using MNC
1727    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1728    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1729    o do snap-shot diagnostics at the middle of the time-interval (instead of
1730      at the end).
1731    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1732      new test for AIM with thSIce + slab-ocean
1733    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1734    o move state variable diagnostics to the beginning of the time step ;
1735      (note: still needs some work specially for snap-shot diagnostics)
1736      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1737    
1738    checkpoint57c_post
1739    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1740    o generate new output.txt files on faulks with g77 & the new -ieee option
1741    checkpoint57c_pre
1742    
1743    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1744      update output.txt of exp. global_ocean.90x40x15
1745    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1746      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1747    o add saltFlux(+File) forcing capability with periodicExternalForcing
1748    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1749    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1750    o improvements for the MNC output from DIAGNOSTICS:
1751      - correct handling of the unlimitied dimension
1752      - all dims now have associated coordinate variables
1753      - variables located at U, V, and Corner ("Z") points are now written
1754        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1755        *all* data points are output
1756    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1757    o added pkg/seaice/seaice_monitor.F
1758    o mdsio_readfield.F can now read files visible only to master MPI process.
1759    o pkg/seaice: some test code for ice-modified ocean stress
1760    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1761      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1762      spurious negative numbers for precipitation and humidity.  Will cause
1763      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1764    o pkg/ctrl/
1765      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1766        May be enabled via doPackDiag
1767      *  introduce z-scaling of
1768         + gradient (doZscalePack) and
1769         + control (doZscaleUnpack)
1770    o pkg/mdsio/
1771      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1772      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1773    
1774    checkpoint57b_post
1775    o simplify options in diagnostics_fill arguments (remove weird combinations)
1776    o fix MNC coordinate variables so that they now contain per-face index
1777      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1778      general, EXCH2 grids are only aligned to a "local" coordinate system
1779    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1780    o Implement instantaneous output within pkg diagnostics:
1781      setting a negative frequency in data.diagnostics produces
1782     "snap-shot" output (as opposed to time-average if freq > 0)
1783    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1784      NOTE: change ptracer diagnostics name: use 2 characters to work with
1785            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1786    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1787      becomes the coordinate variable for the 'T' dimension
1788    o add CF-style coordinate variables to MNC
1789      - just a first cut:  numbers are meaningless on the cubesphere and
1790        missing along the T axis but otherwise it works!
1791    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1792    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1793    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1794      this is based directly on what the model compute, so that the content of
1795      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1796    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1797    o clean up build options files for SunOS, in particular
1798      - remove -traditional from xmakedepend
1799      - change -xarch=v9 to -xarch=native for f77
1800      - restore use of make (not gmake)
1801      - add CC=gcc if using g77
1802    o changes per discussion of AM, JMC, & EH3 today:
1803      - move redundant "grid" variables out of "state" -- in preparation of
1804        creating proper CF-style coordinate variables and in recognition
1805        that any/all grid variables can be easily copied (eg. w/NCO) from
1806        the grid files into any of the other NetCDF files
1807      - *always* output grid variables with MDSIO (this will eventually be
1808        changed)
1809      - output MNC grid file if useMNC is true
1810    o every instance of _END_MASTER() has been found and replaced with
1811      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1812      preprocessors
1813    o re-arrange diagnostics pkg initialisation:
1814     - allow each package to extend the available diagnostics list
1815     - add some checking and fix small problems (multi-threaded, ...)
1816     - new S/R diagnostics_fill (replace fill_diagnostics):
1817       look through the short list of active diag. (instead of the long list)
1818       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1819    
1820    checkpoint57a_post
1821    o this set of changes restores TAMC compatibility
1822      tested for global_ocean.90x40x15 adjoint on trough
1823      (what a pain)
1824    
1825    checkpoint57a_pre
1826    o some modifs in tools/build_options for sunos
1827    o call ctrl_pack for ctrl at end for optimcycle=0
1828    
1829    checkpoint57
1830    o add horizontal bi-harmonic viscosity for vertical velocity
1831      - new parameter viscA4W (defaults to viscA4)
1832      - affects only non-hydrostatic code
1833      - to be done: no-slip lateral boundary conditions
1834    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1835    o implement Implicit Vertical advection for pTracers
1836    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1837      (implemented also for implicit vertical diffusion & advection)
1838    o OBCS: extend application of tracer open boundary conditions
1839      to a strip beyond the boundary of width Olx/Oly
1840    o add call monitor to TAF set of required calls (flow directives)
1841      and include in natl_box_adjoint
1842    o untangle a few ifdefs related to cost, ctrl, autodiff
1843      untangel a few ALLOW_ECCO_OPTIMIZATION
1844    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1845      (theta2, salt2 in ecco_cost_weights)
1846    
1847    checkpoint56c_post
1848    o OBCS as control variables
1849      - update ctrl_ad_diff.list, obcs_ad_diff.list
1850      - remove balance of obcs controls from default
1851      - fix index bug nobcs in ctrl_init
1852      - fix dummy fields filen in ctrl_pack
1853      - add dummy weights for obcs
1854    o lsopt: comment out fort.94 output
1855    o optim:
1856      - remove unnecessary header files
1857      - adjusted namelists
1858      - add xerbla.F to Makefile
1859    o exf:
1860      - multiple modifications of exf_check_range
1861      - unit change in exf_init_runoff from [m/year] to [m/s]
1862    o mdsio:
1863      - i/o-vector change debugLevel from debLevA to debLevB
1864    
1865    checkpoint56b_post
1866    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1867      is called from DO_THE_MODEL_IO
1868      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1869      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1870      - clean up PTRACERS_WRITE_TIMEAVE a little
1871    o add another verification experiment that tests both the cfc-pkg and
1872      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1873      reactive tendencies treated inline with regular timestepping
1874    o testreport previously did a lousy job of comparing small numbers, so
1875      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1876      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1877      testreport.
1878    o ptracers_monitor: bug fix for MPI
1879    
1880    checkpoint56a_post
1881    o GCHEM: finish reorganizating the package
1882      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1883        (introduces another 3D-array for each passive tracer, but only if
1884        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1885        gchemTendency is not needed because the timestep is done separately)
1886      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1887      - GCHEM is now---more or less cleanly---separate from PTRACERS
1888      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1889        so clear to me how that should be done in a general way.
1890    o CFC: improve formatting of output in CFC_ATMOS
1891    o PTRACERS:
1892      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1893        that ALL experiments with ptracers enable can be checked. This makes
1894        GCHEM_MONITOR obsolete.
1895      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1896        monitorFreq
1897      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1898    o add PTRACERS (PTR0[1-5]) to testreport output
1899    o exf_check_range:
1900      * default changed to .TRUE.
1901      * will check values for niter0 if debLevA, every timestep if debLevB
1902      * STOP in exf_check_range if 'out of range'
1903      * range chosen generous to allow for potential extema
1904      TBD: a version with stricter range
1905           permitted range would be runtime parameters
1906    o GMredi:
1907      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1908      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1909      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1910    o GCHEM:
1911      - move call to GCHEM_FORCING_SEP, so that it is now called before
1912        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1913      - introduced a useGCHEM runtime flag and applied it everywhere.
1914      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1915        this flag is now only visible within GCHEM-pkg routines.
1916      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1917        be replaced by a 3D array that is computed before thermodynamics; for
1918        this, the tracer ID iTracer had to be included into the parameter list
1919        of ptracers_forcing
1920      - set up forward_step to call gchem_forcing, that will replace
1921        gchem_forcing_int in ptracers_forcing
1922      - cleaning up
1923    o small cleaning of exch2: remove files that are also in eesupp/src
1924    
1925    checkpoint56
1926    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1927    o mnc: cleanup "full" files--fixes out-of-memory problem
1928    o ECCO-GODAE
1929      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1930      * fully merged and updated from SIO code
1931        windstress sign change affects
1932        - exf_inscal_[u/v]stress
1933        - sign of xx_tau[u/v] adjustments
1934        - signs in cost_scat
1935      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1936      * natl_box_adjoint updated and compressed
1937      * 2-level checkpoint switch added
1938        (tested in EXP. 1 of natl_box_adjoint)
1939      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1940    o SVD
1941      * first complete, non-hacked version for SVD calculations
1942      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1943        performed via direct access files admtlm_vector.it????
1944        (via ctrl_[un]pack)
1945      * optimcycle is used for ARPACK iteration counter
1946        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1947      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1948        and add linear transforms where necessary
1949      * controls are initial/final SST, SSS (can be extended; need to check
1950        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1951    o mdsio: filename info to both stderr, stdout
1952    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1953      from sign change
1954    
1955    checkpoint55j_post
1956    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1957      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1958    o add consistent build directories and .cvsignore files to verification
1959    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1960    o make all subroutines 30 or less characters in length for certain older
1961      compilers to work (a thorough search only turns up two routines in
1962      pkg/ptracers)
1963    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1964      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1965    
1966    checkpoint55i_post
1967    o change arrays for total vertical diffusivity (2.D if explicit,
1968      3.D if implicit) ; each ptracer uses its own background value.
1969    o added mnc/NetCDF output capability to ocn_compon_interf
1970      - added bits to verification/cpl_aim+ocn so that it can run on
1971        ITRDA and other clusters without the mpirun "-wd" option
1972    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1973      configuration
1974    o give MNC the ability to create additional files rather than
1975      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1976      - the default is just less than 2GB which is a practical limit
1977        on many systems
1978    o Compute the non-local term using either KPP vertical diffusivity (=default)
1979       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1980    
1981    checkpoint55h_post
1982    o add verification test "vermix"
1983    o remove all the *_ioinc flags and replace with the single global
1984      outputTypesInclusive flag
1985    o allow to set a vertical profile of vertical diffusivity for T & S
1986    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1987    o useMNC moved from data.mnc to data.pkg
1988    
1989    checkpoint55g_post
1990    o Renaming carbon AD experiments to comply with testreport conventions
1991    o Updating adjoint of Held-Suarez hs94.1x64x5
1992    o Fixing directives for non-ECCO forward_step, after ECCO directives
1993      have been fixed to avoid recomp. of do_oceanic_phys
1994      Works well for global_ocean.90x40x15,
1995      but recomp. issue remains for carbon
1996    o Updating adjoint output for natl_box_adjoint after
1997      pkg/ecco has been modified (see taga c55d_post)
1998    
1999    checkpoint55f_post
2000    o rename to timeave_init_fixed
2001    
2002    checkpoint55e_post
2003    o some delicate re-shuffle of store directives to avoid one
2004      extra call of do_oceanic_physics
2005      affects ecco_the_main_loop.F, do_oceanic_physics.F
2006      checkpoint_lev1_directives.h
2007    o NB: this may break global_ocean adjoint temporarily,
2008      but it is clear how to fix it. Will do later, need this now.
2009    
2010    checkpoint55d_post
2011    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2012    o ecco_cost_weights is modified to 1x1 runs
2013    o modifs to allow observations to be read in as
2014      single file or yearly files
2015    o enable to read exf forcing fields as either
2016      single file or yearly files (flag useExfYearlyFields)
2017    checkpoint55d_pre
2018    
2019    o switch between 2-level and 3-level checkpointing
2020    o add ability of MNC to write local and "partial" (eg. 2D slices where
2021      the full 3D field is never actually stored) arrays to NetCDF files
2022      with the correct (that is, the complete multi-dimensional) set of
2023      array indicies
2024      - used in mom_vecinv() to write the diagFreq output
2025      - tested (demonstrated) in verification/aim.5l_cs
2026    o further mnc-ification
2027      - add verification/lab_sea to the list with mnc setups
2028      - fix undefined mnc v-names in cd_code
2029      - add kpp to mnc output (both snapshot and timeave)
2030    o non-hydrostatic code
2031      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2032        in calc_gw.F
2033      - defaults to viscAh
2034      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2035        friction or Leith) in non-hydrostatic mode, as long as there is
2036        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2037    o pkg/cost
2038      extend simple cost functions to treat time mean quantities
2039      (T,U,V) via cost_accumulate_state from cost_tile
2040    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2041        be 2 times larger than the minimum size the advection scheme requires.
2042        now get a perfect conservation of salt in advect_cs test-exp (updated)
2043    o GGL90 (Gaspar's TKE mixed layer)
2044      - add horizontal diffusion of TKE, requires exchanges in
2045        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2046        default. In OPA there is no horizontal diffusion of TKE but the
2047        mixing coefficients are computed from a horizontal average of TKE of
2048        6 points or so. I think that diffusion has a little more physical
2049        justification.
2050      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2051        was in vain)
2052      - mask tke-variable in ggl90_init
2053    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2054    o fix biharmonic diffusion on CS-grid.
2055    o more obcs stuff
2056      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2057        for reading boundary values. This routine is called from
2058        obcs_prescribe_read
2059      - updated obcs_check
2060      - changed sponge layer relaxation parameter units for days to seconds
2061      - turned off sponge layer by default
2062      - changed argument list of OBCS_CALC to myTime+deltaTclock
2063      - fixed about 35 bugs in obcs_external_fields_load
2064    
2065    checkpoint55c_post
2066    o obcs stuff
2067      - new runtime flags useOBCSprescribe, useOBCSbalance
2068      - re-arranged obcs_calc
2069      - moved exf_getobcs to obcs_prescibe_read
2070        obcs_prescibe_read is called after ORLANSKI stuff
2071        and independent of it (executable can contain all).
2072      - updated obcs_check
2073      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2074        These may be necessary only if tangential velocities are
2075        prescribed at OB, not sure, needs testing.
2076    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2077      which simplifies the calls and passes the ifc check-bounds test
2078    
2079    checkpoint55b_post
2080    o add a 2D scalar, Z location, exchange_2 routine.
2081    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2082      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2083      affects advect_cs results (for the wrong reason): update output.txt
2084    o use a more standard discretization for biharmonic viscosity ;
2085     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2086      affects results of dome set-up: update output.txt
2087    o fix gad_advection.F (CubedSphere part), back to version 1.23
2088    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2089    
2090    checkpoint55a_post
2091    o merged code to
2092      * prescribe/read time-dependent open boundaries
2093        (works in conjunction with exf, cal)
2094      * sponge layer code for open boundaries
2095      * each boundary N/S/E/W now has its own CPP option
2096        (healthy for the adjoint)
2097    
2098    checkpoint55
2099    o up-to-date adjoint of previous breaks
2100      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2101      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2102      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2103      - carbon: * remove tr1-related adjoint verification
2104                * add ptracer as control variable
2105    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2106      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2107    
2108    checkpoint54f_post
2109    o in verification/carbin/ remove experiment related to
2110      ALLOW_PASSIVE_TRACER (array tr1 etc)
2111      code_ad/ input_ad/ results_ad
2112    
2113    o add two new packages
2114      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2115        + subject to optimization (memory)
2116      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2117        + subject to reordering (many GOTOs in the original code)
2118        + so far opps is called for every (i,j) point, and then operates in
2119          the vertical; one may want to reorder the scheme in order operate in
2120          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2121          fields)
2122    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2123      - all verification tests compile and run with linux_ia32_g77
2124      - defaults are compatible with current input files--nothing
2125        should change if you were not previously using MNC
2126      - MNC output has been added in numerous places (eg. timeave)
2127        but there are still a few writes not yet do-able with MNC
2128        (this is in progress)
2129      - flags now allow for either/or/both use of MDSIO and MNC and
2130        documentation will soon follow
2131      - numerous small formatting cleanups for ProTeX
2132    o add version info (via BUILD_INFO.h) to MNC and stdout
2133    
2134    checkpoint54e_post
2135    o add two new packages
2136      - pp81 (Packanowski and Philander, 1981), Richardson number and
2137        stratification dependent mixing
2138      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2139      - these scheme operate in a similar manner as KPP (without ghat, of
2140        course), however there is only one diffusivity that is used for both
2141        temperature and salinity (and passive tracers)ç
2142    o add offline package
2143    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2144      provided by Stephanie Dutkiewicz
2145    o genmake2: add ability to search for C compilers and cleanup test output
2146      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2147    
2148    checkpoint54d_post
2149    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2150    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2151      leading to additional shift by 5 days each year of integration
2152       (i.e. leading to considerable offset over the years)
2153    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2154    o start with no AB and no initial filtering (staggerTimeStep):
2155      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2156    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2157      (external loading & cpl import/export stay in forward_step.F)
2158    o update coupling interface to work with new staggerTimeStep
2159    o change MDSIO ptracers_pickup.
2160    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2161    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2162    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2163    
2164    checkpoint54c_post
2165    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2166      this affects (truncation error) output.txt of test-exp:
2167       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2168    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2169    o change Qnet to always be the net heat flux, (+upward).
2170      affects (truncation error) output of natl_box exp.: updated
2171    o define the max number of passive tracers in PTRACERS_SIZE.h
2172    o start to test mnc routinely in exp0
2173    o add sea-ice loading (sIceLoad) as a new forcing field.
2174    
2175    checkpoint54b_post
2176    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2177       impressive on Altix and Opteron systems)
2178    o diagnostics can now write NetCDF files through the mnc package
2179    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2180    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2181    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2182      affects (truncation error) output of lab_sea & natl_box exp.: updated
2183    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2184    
2185    checkpoint54a_post
2186    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2187    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2188    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2189    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2190      + internal_wave (shift in writing cg2d_ini_res)
2191    checkpoint54a_pre
2192    
2193    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2194      - modified verification/lab_sea and natl_box_adjoint accordingly
2195    
2196    checkpoint54
2197    checkpoint53g_post
2198    o prepare splitting of thermodynamics: store convect.counter in common block
2199    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2200      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2201    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2202    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2203    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2204    o restore adjointability
2205    
2206    checkpoint53f_post
2207    o modifications that affect AIM experiment results (update output.txt):
2208      - no advection of S at top interface Nr (pkg/generic_advdiff)
2209      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2210    o AIM pkg:
2211      - include stability function into surf.Flux derivative relative to Tsurf
2212      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2213    
2214    checkpoint53e_post
2215    o merged cylindrical coord configuration
2216    o added rotating_tank experiment
2217    checkpoint53e_pre
2218    
2219    checkpoint53d_post
2220    o faulks upgraded: re-generate output.txt that have changed:
2221       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2222    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2223    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2224    o added Sadourny discretization of Coriolis
2225      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2226      - re-enabled use of omega3 (useAbsVorticity)
2227    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2228      vector-invariant equations
2229      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2230    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2231      hopefully without new bugs
2232      - still to do: biharmonic friction for non-hydrostatic w
2233    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2234    o regenerated output for global_ocean_ebm (using -ieee)
2235    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2236      of mom_common/
2237      - simple re-arrangement of instructions within computing loop
2238    checkpoint53d_pre
2239    
2240    checkpoint53c_post
2241    o new version of coupler for AIM+thSIce and Ocean models
2242     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2243     - land: change Evaporation of snow
2244     - aim with thSIce: fix bug in snow-precip.
2245    o changes to calc_gw.F
2246     - bug fix for w^2 term near the bottom boundary
2247     - (hopefully) improve the lateral slip boundary condtions for use with
2248        partial/looped cells
2249      - because the bug fix changes two verification experiments anyway (exp5
2250        and plume on slope), change the lateral boundary condition from half slip
2251        to the value of no_slip_sides
2252    o ebm package wasnt quite up to the parallel task. Fixed that.
2253    o Adjoint of EBM package + verification
2254      * TLM OK
2255      * ADM not sufficient accuracy yet (needs further testing)
2256    
2257    checkpoint53b_post
2258    o Commiting new energy balance model to repository
2259      * package is pkg/ebm
2260      * verif. is verification/global_ocean_ebm
2261      * references are in ebm_driver.F
2262    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2263    C        Global thermohaline circulation. Part I:
2264    C        Sensitivity to atmospheric moisture transport.
2265    C        J. Climate 12(1), 71-82
2266    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2267    C        Global thermohaline circulation. Part II:
2268    C        Sensitivity with interactive transport.
2269    C        J. Climate 12(1), 83-91
2270    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2271    C        Destabilization of the thermohaline circulation
2272    C        by atmospheric eddy transports.
2273    C        J. Climate 7(12), 1870-1882
2274    o Will need long integration testing.
2275    checkpoint53b_pre
2276    
2277    o created pkg/mom_common in preparation for variable viscosity code
2278    o renamed and split ini_mnc_io
2279    o pkg/land: only liquid water can diffuse or run-off
2280    o AIM using land: soil wetness availability account for snow
2281    o added printMapIncludesZeros to EEPARMS namelist
2282    
2283    checkpoint53a_post
2284    o restore TAMC compatiility for exf_constants.h
2285      (no usage of _d in .h)
2286    o Additional storing in KPP in an attempt to fix
2287      TAMC problem with adjoint of KPP code.
2288      (no success...)
2289      Identical code works fine with TAF.
2290    o Fixed verification/natl_box_adjoint experiments.
2291      Initial conditions for Experiments 4 and 5 are now
2292      set to "SEAICE_initialHEFF=0", which is more reasonable,
2293      and hence gives results closer to that of Experiment 2.
2294      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2295    
2296    checkpoint53
2297    o stable checkpoint with up to date adjoint
2298      TLM tests only run for 1st grdchk at the moment. Its unclear if
2299      this is a code problem or a problem with resetting code for g_
2300      variables that is being autogenerated wrong.
2301      Otherwise:
2302       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2303       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2304         are both still in chaos following their security messes.
2305    
2306    checkpoint52n_post
2307    o various build (mostly genmake2) changes including:
2308      - ability to build/run more easily within Cygwin and MacOS X
2309      - more complicated Makefiles with a stronger dependence on Gnu Make
2310    o pkg/seaice modifications
2311      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2312        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2313        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2314      - changed proxy for geostrophic velocity and updated
2315        verification/lab_sea/results/* accordingly
2316      - removed ADI dynamic solver from pkg/seaice
2317      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2318        they caused a segmentation fault under certain circumstances
2319      - removed unused field WATR
2320    o bug fix in exf-package:
2321      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2322         now reflect that.
2323    o small fixes in the cal-package:
2324      - set reference date to first of January for the 'model'-calendar
2325      - failing of cal_CheckDate in cal_FullDate now actually results in a
2326        warning
2327    o small modifications in exf-package to increase flexibility:
2328      - change climtempfreeze from a constant to a runtime parameter that
2329        is specified in data.exf_clim (default = -1.9)
2330      - introduce runtime parameter windstressmax (default = 2.0) that is
2331        specified in data.exf
2332    o fix in pkg/thsice:
2333      - update Evap (Tsf changes) to be consistent with Latent heat flux
2334      - maintain snow precipitation unchanged (even if Tsf >=0).
2335     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2336    
2337    checkpoint52m_post
2338    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2339      this does not change any of the results, because myIter=0 in swfrac always
2340      lead to jwtype=2 (the default anyway), but the call makes little sense
2341      as a default
2342    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2343    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2344      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2345    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2346    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2347    o extending useSingleCpuIO option to work with new exch2 I/O format
2348      - old-style, missing-tile I/O is still accessible by defining CPP
2349        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2350    o monitor package can write to NetCDF files and/or STDOUT
2351    o fix re-definition bug in MNC_GRID_INIT_ALL()
2352    o doc/api_reference added
2353      - a framework for building an API Reference Manual using all
2354        the "protex" comments embedded in the code
2355      - see pkg/generic_advdiff, pkg/mnc for examples
2356    o MNC:
2357      - make myThid the last argument for all subroutines
2358      - new default for the grid files: NO halos
2359      - add useMNC and other run-time flags
2360      - separate per-file-group handling of the unlimited dimension
2361      - early initialization of MNC w/ flags read at the eeboot stage
2362        and lookup tables set in initialize_fixed
2363      - write all MNC output to a freshly-created directory
2364    o thermodynamics sea-ice (thsice) is now tested with testreport.
2365    o test exp. advect_cs: use the standard cs32 grid ; update output.
2366    o Added functionality to grdchk:
2367      pick global i,j,k position (or nearest wet) where to perform check.
2368    
2369    checkpoint52l_post
2370    o new land formulation:
2371      a) use ground enthalpy as prognostic variable to ensure exact
2372         energy conservation.
2373      b) account for water temperature and for latent heat of freezing
2374         in all processes (rain, run-off, ground storage)
2375      c) compute surface and ground temperature implicitly.
2376    o aim_v23 modification for new land model:
2377      a) Treat separately land / ocean / sea-ice surface fluxes
2378         to allow implicit computation of land & sea-ice surface temp.
2379      b) add snow precipitation.
2380    checkpoint52l_pre
2381    
2382    o fix problem (when 1 tile is empty) in min/max monitor.
2383    o fix bug in timeAve (u,vZetatave in common block)
2384    o no restoring terms under ice for pkg/seaice
2385    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2386    o bug fix for pkg/seaice pickups
2387    o change MNC call locations and add coordinate attributes
2388    o mask vorticity at the corner ; affects global_ocean.cs output
2389    o fix ini_curvilinear_grid ; test CS experiments with mpi
2390    o aim.5l_cs: modify sea-ice fraction input file ; update output
2391    o exf: Adding simple range check routine for exf fields after read
2392    
2393    checkpoint52k_post
2394    o removed top-level directory "diags"
2395      - we migrated these functions to pkg/timeave a long time ago
2396    o fixed bug introduced in pkg/monitor
2397    o accuracy ctrlprec = 32 insuffient for gradient checks using
2398      averaged fields (I/O via cost_averages)
2399      -> use ctrl.h in active_file*.F to control I/O precision.
2400    o paramter list of CALL ADTHE_MAIN_LOOP
2401    o added initial do_the_model_io to ecco
2402    o set all ...Freq to zero after cost_final
2403      taveFreq, dumpFreq, pChkptFreq
2404    o MAIN and ECCO differentiability restored
2405    
2406    checkpoint52j_post
2407    o fix nchklev in tamc.h for global_ocean...
2408    o Bringing flow and store directives up-to-date
2409    o Really weird thing!
2410      call do_the_model_io from the_main_loop with parameters
2411      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2412      TAF places a faulty re-call of initialise_varia
2413      after cost_final call which should not be there!
2414    checkpoint52j_pre
2415    
2416    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2417      error messages
2418    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2419    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2420      debug output
2421    o modfied mdsio_writefield.F to handle non-global files under exch2
2422    o update AIM Cubed-Sphere exp (aim.5l_cs):
2423      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2424    o update AIM Equatorial Channel exp:
2425      use standard aim_v23 pkg and change the SST fields to be more realistic.
2426    o globalFile now works with exch2
2427    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2428      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2429    o limit timeave output for hi-res integrations
2430    
2431    checkpoint52i_post
2432    o removed CPP_EEOPTIONS.h from verification/*/code
2433    o updated the tiling for global_ocean_pressure
2434    checkpoint52i_pre
2435    
2436    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2437      the old pkg/aim).
2438    
2439    checkpoint52h_pre
2440    o shortened offending lines in exch2_send_rx?.template
2441    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2442    o genmake2: add build & execute test for NetCDF code
2443    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2444      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2445    o added useSingleCPUIO flag to monitor.F and mon_out.F
2446    o added temporary hack for sea-ice dynamics on the cube:
2447      metric terms are ignored and it is assumed that
2448      there is no sea-ice on cube faces 1, 2, 4, and 5.
2449    
2450    checkpoint52f_post
2451    o added exch2 cube routines to pkg/exch2
2452    o modified hs94.cs-32x32x5 to use it
2453    o added new grid files to hs94.cs-32x32x5
2454    checkpoint52f_pre
2455    
2456    checkpoint52e_post
2457    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2458      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2459    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2460      to work with implicit vertical advection and AB ;
2461    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2462    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2463     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2464    checkpoint52e_pre
2465    
2466    o fix bug in impldiff when Nr=1 or Nr=2.
2467    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2468    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2469    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2470      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2471    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2472    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2473    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2474    
2475    checkpoint52d_post
2476    o re-tiled many expts to allow comparison in multi-processor mode
2477      - updated output accordingly
2478      - changed hs94.128x64x5 to use intial T from file rather than use the
2479        random number generator
2480    o add infrastructure in model routines for fizhi and gridalt packages
2481    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2482    o changes to permit hi-res, cubed-sphere, configuration
2483      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2484      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2485      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2486        of surface winds for the cube
2487      (A verification experiment, based on global_ocean.cs32x15, but with
2488       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2489       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2490       complete with example surface forcing files and matlab scripts to look
2491       at the output and compare it with that of global_ocean.cs32x15.)
2492    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2493       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2494       to conform to the common rule.
2495    o check-in the first version of the coupler + interfaces for multi-components
2496       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2497       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2498       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2499       - ocean and atmos. share the same horizontal grid (no interpolation).
2500       - exchanges between component and coupler is done in forward_step
2501    o new verification experiment, cpl_aim+ocn:
2502       coupled ocean - AIM atmosphere on cs32 grid.
2503    
2504    checkpoint52d_pre
2505    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2506    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2507    
2508    checkpoint52c_post
2509    o Fixing OPTIONS files for use of exf:
2510      - ALLOW_ECCO not needed
2511      - ECCO_CPPOPTIONS.h should not be included from
2512        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2513        as has been the case in the past
2514      - All cal/exf related options are currently set in
2515        single header file. Should remain so until we
2516        agree on a consistent new policy.
2517    o Removed all CPP options for cal package.
2518      cal has no more CPP options.
2519    o modified STOREs in GAD_ADVECTION
2520    o corrected key comp. for passkey
2521    
2522    checkpoint52b_post
2523    o new version: "thsice" of thermodynamic sea-ice pkg:
2524     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2525     - modify fluxes but do not change theta directly;
2526     - light cleaning of bulk_force pkg (still needed with thsice).
2527     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2528       + output_thsice.txt to test thsice & bulk_force pkgs.
2529    o put back grid & coriolis monitor output.
2530    checkpoint52b_pre
2531    
2532    o call "do_the_model_io" at the beginning (=> dump initial state)
2533    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2534    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2535      (need info on NUMBER_OF_PTRACERS)
2536    o missing PTRACERS headers in some routines
2537    o default tamc.h in pkg/autodiff supposed to crash
2538      to ensure proper customization
2539    
2540    checkpoint52a_post
2541    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2542      - moved surfaceTendencyTice from pkg/seaice to main code
2543      - subroutine FREEZE_SURFACE now limits only surface temperature
2544        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2545        => new output.txt for global_ocean.cs32x15 & global_with_exf
2546      - keep the old version of FREEZE for backward compatibility;
2547        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2548      - corresponding modifs for TAF directives
2549    o added surface flux output variables to TIMEAVE_STATVARS
2550    o time-averaged output for pkg/ptracers
2551    o fix problem with ECCO-related divided adjoint
2552      snapshot file was missing some ad-variables,
2553      but no warning issued by TAF
2554    
2555    checkpoint52a_pre
2556    o some bug fixes for #undef REAL4_IS_SLOW
2557    
2558    checkpoint52 = ecco_c52_e35
2559    o after testing adjoints of checkpoint51u_post
2560    
2561    checkpoint51u_post
2562    o this is the post-merge tag of the ecco-branch
2563      (needs another clean checkout and re-testing)
2564    o various natl_box_adjoint configs and results
2565      but no input fields
2566    o obcs adjoint not yet merged!
2567    o adding ECCO global 1x1 and 2x2 degree configs
2568    o updated/extended some store directives for seaice
2569    o pkg/ecco now containes ecco-specific part of cost function
2570    o top level routines the_main_loop, forward_step
2571      supersede those in model/src/
2572      previous input data.cost now in data.ecco
2573      (new namelist ecco_cost_nml)
2574    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2575    
2576    checkpoint51t_post
2577    o this is the pre-merge tag of the ecco-branch
2578    
2579    checkpoint51s_post
2580    o cleanup: removed various obsolete #define-s
2581    o pkg/grdchk
2582      - renamed 'ph-grd 3' to 'grad-res'
2583      - merged from ecco-branch
2584        (remaining bug fixes for obcs gradient checks)
2585      - additional high-precision output for testreport
2586        (grep for 'precision_grdchk_result')
2587    
2588    checkpoint51r_post
2589    o cleaned up or removed CPP_OPTIONS.h files
2590    o updated results for some of the tests to reflect the new
2591      optfiles (-ieee: -O0 instead of -O3)
2592    
2593    checkpoint51q_post
2594    o cd_code:
2595      - moved cd_scheme.F -> cd_code_scheme.F
2596      - separate read_checkpoint from cd_code_ini_vars.F
2597      - separated cd_code part from write_checkpoint
2598      - updated AD_SOURCE, generated .flow
2599      - added CD_CODE_VARS.h to the_main_loop
2600      - Moving cd_code specific store dir.s to pkg/cd_code
2601    o ctrl package totally restructured
2602      - pack/unpack now optional and decoupled from
2603        xx_/adxx_ I/O
2604      - ctrl_pack/unpack cleaned
2605        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2606      - confined inclusion of AD_CONFIG.h to where necessary.
2607    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2608    
2609    checkpoint51p_post
2610    o create initial cd_code package
2611      - WARNING: the initialization of fields within packages
2612        is broken because INI_FIELDS (where READ_CHECKPOINT is
2613        called) is called *before* PACKAGES_INIT_VARIABLES.
2614        This seems to be backwards since
2615        1) its important to initially zero the entire field including
2616           the "halo" region
2617        2) zeroing needs to be done *before* reading pickup info
2618           and the pickup call might or might not happen in any
2619           particular run
2620      - this needs an overhaul for R2
2621    o cleanup verification/*/code/GMREDI_OPTIONS.h
2622    o cleanup testreport
2623    
2624    checkpoint51o_post
2625    o bringing AD-related verif's up to date with genmake2
2626      - carbon/
2627      - global_ocean.90x40x15/
2628      - hs.94.1x64x5/
2629      - (front_relax/ )
2630    o (more) consistent directory structure for AD-related verif.'s
2631    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2632    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2633    o bug fix in find_alpha.F for MDJWF:
2634      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2635        change rho -> rho-rhoConst
2636      - replace call find_rho to find_rhonum
2637    o initialisation of rFlx extended to full array (required by TAF)
2638      and shifted to thermodynamics
2639    o removed PTRACERS.h in ptracers routine
2640    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2641    o Correcting initialisations for fVerU, fVerV.
2642    o helping TAF to recognize dependency on kUp for
2643      fVerU, fVerV
2644    o Replacing delZ by delR in pkg/ctrl/
2645    checkpoint51o_pre
2646    
2647    o undid all of cp51 pending some cleanups and discussion
2648    o added the [#include "AD_CONFIG.h"] statement to all files that need
2649       it for adjoint/tl #defines
2650     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2651     o removed tools/genmake since it no longer works
2652    
2653    checkpoint51n_post
2654    o modifications to make FREEZE flux visible to pkg/kpp
2655      - moved surfaceTendencyTice from pkg/seaice to main code
2656      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2657      - subroutine FREEZE now limits only surface temperature
2658        (this means new output.txt for global_ocean.90x40x15,
2659         global_ocean.cs32x15, and global_with_exf)
2660    o added surface flux output variables to TIMEAVE_STATVARS
2661    
2662    checkpoint51n_pre
2663    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2664    o added [#include "AD_CONFIG.h"] to all files that use the following
2665      defines:
2666      - ALLOW_ADJOINT_RUN
2667      - ALLOW_TANGENTLINEAR_RUN
2668      - ALLOW_ECCO_OPTIMIZATION
2669    
2670    checkpoint51m_post
2671    o incorporating changes to get TAMC/TAF working in genmake2
2672      - added new TAMC/TAF targets to the Makefile
2673      - various cleanups related to package handling
2674      - these changes should have no impact on the forward model
2675    
2676    checkpoint51l_post
2677    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2678     - faster algorithm for cal_addtime.F
2679     - higher precision arithmetic, where needed
2680     - pkg/exf *startdate variables changed from calendar date to
2681       model integration time
2682    
2683    checkpoint51l_pre
2684    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2685    o enable to apply restoring on S & T only in a latitude band.
2686    o update output (external_forcing_surf modif. change truncation errors)
2687       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2688    
2689    checkpoint51k_post
2690    o change default to: useNHMTerms=.FALSE.
2691     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2692       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2693     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2694        exp1, ideal_2D_oce
2695     - change data file of oceanic exp (leave the results unchanged for now)
2696       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2697    o set gravitySign automatically according to the vertical coordinate used
2698      (and change sign: back to "logical" value: +1 when R increases downward)
2699    o added an include barrier to the default CPP_OPTIONS.h and
2700      removed the #include "PACKAGES_CONFIG.h" from it
2701    o fix a bug in mom_fluxform (from chk51j_post)
2702    
2703    checkpoint51j_post
2704    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2705    o adjusted some flow directives (dynamics, thermodynamics)
2706    o added cubed-sphere case to test cost function
2707    o heckpoint_lev?_directives.h now include
2708      pkg-specific directives, whenever those are enabled.
2709    o Moving pkg-specific flow directives to corresponding pkg
2710      Moving pkg-specific differentiation list to corresponding pkg
2711      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2712      ---> conventions are
2713           - pkg_ad.flow
2714           - pkg_ad_diff.list
2715           - pkg_ad_check_lev?_dir.h
2716    
2717    checkpoint51i_post
2718    o merge of the branch-genmake2
2719      - knowingly breaks the older genmake
2720      - automatic generation of all ALLOW_${PKG_NAME} defines
2721      - new testreport supersedes older testscript
2722    o large number of package inclusion and header cleanups
2723    checkpoint51i_pre
2724    
2725    o new output for adjoin of global ocean vector invariant
2726    o fix for checkpoint of thermodynamic seaice and bulk_force
2727    o Steph gchem various cleanups
2728    
2729    checkpoint 51h_pre
2730    o fixed some single quotes
2731    o modify gchem pkg to be more versatile
2732    o modifications to clean up dic pkg
2733    o add pkg/cfc
2734    
2735    checkpoint51g_post
2736    o provide links for ARPACK and ADM*TLM
2737    o start removing verification/vero/
2738    o update AD-related stuff
2739      (in particular some IF-statements in model/src/ routines)
2740    o adding to verification/global_ocean.90x40x15/ adjoint of
2741      vector invariant setup
2742    
2743    checkpoint51f_post
2744    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2745    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2746      of tracer Green's fucntions for ocean inversion project.
2747    
2748    checkpoint51f_pre
2749    o Added on-the-fly spatial interpolation capability
2750        "USE_EXF_INTERPOLATION" to pkg/exf.
2751      - This is a temporary Cartesian-grid hack until
2752        the super-duper ESMF coupler becomes available.
2753      - See verification/global_with_exf/README for usage example.
2754      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2755        flags and modified pkg/seaice accordingly.
2756    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2757        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2758        non-local transport term.
2759    
2760    checkpoint51e_post
2761    o pkg/mom_vecinv:
2762      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2763      - add time-ave diagnostic of vorticity advection.
2764    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2765    o atmospheric geopotential: - include water vapor effect;
2766                                - use p^kappa in p* scaling.
2767    o land pkg: read initial state from files.
2768    o AIM : add stratospheric drag in the upper level
2769    
2770    checkpoint51d_post
2771    o change function ILNBLNK (=> last non-blank char.) to return zero
2772      (instead of the string length) when the string. char is empty
2773    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2774    o modif's to restore TAMC compatibility
2775      - avoid "_d" constructs in PARAMETER declarations
2776      - avoid interrupting lines by comment lines
2777    o Use cluster local disks for purely local I/O
2778      vs. globally visible disks needed for ctrl stuff
2779      (merged from ecco-branch)
2780      - new active_file_loc... and mdsio_..._loc routines
2781      - affected packages: autodiff, ctrl, grdchk, mdsio
2782    
2783    checkpoint51c_post
2784    o introducing integer flag debugLevel
2785      - debLevZero: suppress all output
2786      - debLevA: standard
2787      - debLevB: equivalent to current debugMode=.TRUE.
2788    o introducing pathname variable mdsioLocalDir for mdsio
2789      that can be specified at runtime
2790      (relevant for cluster I/O to local disk)
2791    `
2792    >>>checkpoint51b_post
2793    adjoint of ptracers
2794    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2795    o extended state in checkpoint_lev?, etc.
2796    o alternative ctrl/cost with tr1 or ptracer
2797    o new comlev1_bibj_ptracers
2798    o new ptracers.flow
2799    o made ptracers_forcing same as external_forcing_s
2800    o added verification for adjoint with ptracers
2801      - adm. grdchk fail so far
2802      - tlm. grdchk OK
2803      - checked tapelev/comlev recomputations: OK
2804    <<<checkpoint51b_pre
2805    
2806    checkpoint51a_post
2807    o added code for biogeochemistry package
2808      - new pkgs: dic, gchem
2809      - new subroutine in ptracers
2810    o modify code for biogeo packages
2811      - in model/src and pkg/ptracers
2812    
2813    checkpoint51
2814    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2815      - autodiff, ctrl, exf, grdchk, seaice
2816      kept separate packages
2817      - cost, ecco, obcs
2818    o updating verification/internal_wave, verification/lab_sea
2819      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2820    
2821    checkpoint50i_post
2822    o Preparing next differentiable checkpoint and sync
2823      of MAIN vs. ecco-branch
2824      - 1st step: this one is differentiable
2825      - 2nd step: next(! not this) checkpoint will have updated packages
2826                  from ecco-branch)
2827    
2828    checkpoint50h_post
2829    o new package "land": provide surface BC for AIM.
2830    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2831    o AIM: use true log-P extrapolation for near surface temp (= as in
2832        F.Molteni paper) ; update aim.5l_cs output.
2833    o New variable in PARM03 for more flexible pickups
2834    o somewhat cleaned package initialisation sequence for
2835      ctrl/ cost/ ecco/ in packages_... routines
2836    
2837    checkpoint50g_post
2838    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2839      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2840      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2841        made the default because of faster convergence than ADI
2842    
2843    checkpoint50f_post
2844    o exf totally restructured
2845      - replaced all exf_set_ routines by one generic exf_set_gen.F
2846        and made sure it's still differentiable
2847      - split exf_getffields.F into new exf_bulkformulae.F
2848      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2849      - updated adjoint/makefile and relevant verif. accordingly
2850    
2851    checkpoint50f_pre
2852     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2853          + change Evap over land. (update aim.5l_cs output)
2854     o added missing .cvsignores and made uniform across expts
2855     o changed configuration of tidal_basin_2d expt
2856     o added pkg/debug functions for tracing code in fatal crashes
2857     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2858     o new fn in pkg/monitor to stop model if solution grows too big
2859     o removed lots of single quotes from comments
2860    
2861    checkpoint50e_post
2862    o make KPP work with PTRACERS
2863     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2864       nearly a copy of kpp_transport_s
2865     - there is no analogue to SurfaceTendencyS, so I have to use
2866       gPtr(of the surface layer) instead
2867    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2868    checkpoint50e_pre
2869    
2870    checkpoint50d_post
2871    o change kpp output from multiple-record state files to single-record state
2872      files analogous to write_state.F
2873    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2874      analogous to the cg2d-related output.
2875    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2876      so that writing to internal file fn (with length 512) fails.
2877    checkpoint50d_pre
2878    
2879    checkpoint50c_post
2880    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2881    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2882    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2883    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2884    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2885    
2886    checkpoint50c_pre
2887    Merging from release1_p13:
2888    o bug fix for pkg/seaice dynamic solver
2889    o Added SEAICE_initialHEFF to pkg/seaice
2890    
2891    checkpoint50b_post
2892    o store u*,v* in gU,V instead of in guNm1,gvNm1
2893    o in order to put the momForcing out of the Adams-Bashforth:
2894      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2895      to timestep.F
2896    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2897    o re-generate output for highly sensitive test-exp:
2898       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2899    
2900    checkpoint50b_pre
2901    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2902    o corrected CPP option mismatch in exf_Bulk... functions for case
2903      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2904    
2905    checkpoint50a_post
2906    o Bug fix for merging between c50 and KPP.
2907      ikey was passed from thermodynamics to kpp_calc via
2908      common block rather than being recomputed in kpp_calc,
2909      in contradiction with new key itdkey.
2910      New key ikppkey created, and tamc.h headers updated.
2911    
2912    checkpoint50
2913    - 2nd step of merge with ecco-branch:
2914      merge changes in ecco-branch back into main trunk
2915    - bug fix in find_alpha
2916    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2917    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2918    - merged some sliced AD support routines
2919    
2920    checkpoint49
2921    merged from ecco-branch:
2922    o exf:
2923      - Enable initialisation of forcing fields to constant
2924        (runtime) values.
2925      - in exf_getffields.F
2926        Reduce i-/j-loop to interior domain, discarding overlaps.
2927        That also fixes wrong TAF-key computations for key_1, key_2
2928        with bulf formulae.
2929      - exf_init.F modify #ifdef for exf_init_evap
2930      - exf_getffieldrec.F, ctrl_getrec.F
2931        The following INT-usages are not safe:
2932          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2933          fldcount = int(fldsecs/fldperiod) + 1
2934        and were modified.
2935    o autodiff: checkpoint_lev...
2936      - updated storing for bulk formulae (some arrays were missing)
2937      - added state for seaice package
2938      - synchronized with main branch
2939    o DIVA:
2940      Modif.s in
2941      - the_main_loop.F
2942      - the_model_main.F
2943      and added cost_final_restore.F cost_final_store.F
2944      o With these changes, it is possible to fully separate
2945        the first forward run to compute the cost function (mdthe_main_loop)
2946        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2947        into separate model executions.
2948        This enables better tuning of DIVA to given queue sizes.
2949      o Loss of cost function value in consecutive DIVA runs is
2950        fixed by storing to 'costfinal' file.
2951      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2952        beginning/end of adjoint integration is accounted for.
2953      The current changes apply to TAF-1.4.26.
2954      TAF has one remaining bug, requiring one manual change
2955      (see MITgcm manual).
2956    o cal: synchronized between MAIN and ecco-branch
2957    
2958    checkpoint48i_post
2959    o Changes to restore differentiability of code w.r.t. previous tag
2960      (mostly adding new routines to make list and replacing
2961      pressure by totPhiHyd).
2962    o Updated and merged grdchk package
2963      - has both ADM and TLM checks
2964      - works for single- and multi-proc.
2965      - output cleaned
2966      - worked successfully for parallel DIVA
2967    o genmake:
2968      - Adding -platform=SP4
2969      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2970    o Modif. for DIVA:
2971      ctrl_unpack should not be called in intermediate DIVA interval.
2972      (similar thing would apply for active files such as
2973      tbar, sbar, psbar, which should not be reinitialised;
2974      only relevant for ecco-branch)
2975    
2976    checkpoint48h_post
2977    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2978    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2979    o Added SEAICE_initialHEFF to pkg/seaice
2980    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2981    
2982    checkpoint48g_post
2983    --- EOS:
2984    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2985      store total Potential in totPhyHyd for diagnostics & EOS.
2986    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2987    --- Pressure/geopotential gradient:
2988    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2989    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2990      ( changes results of global_ocean_pressure )
2991    o NLFS + z-coord.: add eta*Rho' contribution.
2992    o accurate phiHyd when using interface-W at the middle between 2 centers
2993     ( changes results of ideal_2D_oce )
2994    o includes r* 2nd term in potential gradient.
2995    
2996    checkpoint48f_post
2997    Merging from release1_p12:
2998    o Modifications for using pkg/exf with pkg/seaice
2999      - improved description of the various forcing configurations
3000      - added basic radiation bulk formulae to pkg/exf
3001      - units/sign fix for evap computation in exf_getffields.F
3002      - updated verification/global_with_exf/results/output.txt
3003    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3004      (SBO) core products, including oceanic mass, center-of-mass,
3005      angular, and bottom pressure (see pkg/sbo/README.sbo).
3006    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3007      to avoid negative values in shallow regions.
3008      - updated verification/natl_box/results/output.txt
3009      - updated verification/lab_sea/results/output.txt
3010    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3011    o Added useSingleCpuIO option (see PARAMS.h).
3012    o Updated useSingleCpuIO option in mdsio_writefield.F to
3013      work with multi-field files, e.g., for single-file pickup.
3014    o pkg/seaice:
3015      - bug fix in growth.F: QNET for no shortwave case
3016      - added HeffFile for specifying initial sea-ice thickness
3017      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3018    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3019      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3020    o pkg/seaice:
3021      - adjoint-friendly modifications
3022      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3023    
3024    checkpoint48e_post
3025    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3026    o dynamics: change definition of computational domain & adapt mom_fluxform
3027      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3028    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3029        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3030        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3031        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3032        inverted_barometer solid-body.cs-32x32x1
3033      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3034    
3035    checkpoint48d_post
3036    o in preparation for r*:
3037     a) use pre-computed gradient of hydrostatic potential:
3038        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3039     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3040        => affects results of glob_oce_pressure (different truncation error)  
3041      update output.txt of ideal_2D_oce & global_ocean_pressure
3042    
3043    checkpoint48d_pre
3044    o in preparation for r*:
3045      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3046      pass the 2 comp. of the grad. as arguments to momentum S/R.
3047      but for the moment, only used if it does not change the results.
3048    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3049    
3050    checkpoint48c_post
3051    Modifications in treatment of initial flux forcing controls
3052    to avoid extra storing of flux fields.
3053    
3054    checkpoint48c_pre
3055    o Added tidal_basin_2d experiment (currently 1D!)
3056    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3057    
3058    checkpoint48b_post
3059    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3060     (modification to pressure gradient not yet implemented)
3061    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3062      (for U & V) that are used for vertical advection of momentum.
3063    
3064    checkpoint48a_post
3065    o In preparation for r*, use temp. array to compute vertical transport
3066       in flux-form momentum pkg. => change results of few test-exp.
3067      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3068                        lab_sea, natl_box & plume_on_slope
3069    
3070    checkpoint48
3071    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3072    
3073    checkpoint47j_post
3074    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3075    o moved adexch from forward_step to addummy_in_stepping
3076    o added exch in ctrl_map_...
3077    o aveFreq.=0. at end of cost_final to avoid overwrite in
3078      reverse checkpointing loop
3079    o Yet more changes in gmredi:
3080      * adgmredi_calc_tensor
3081        avoiding all recomputation of gmredi_slope_limit
3082      * adgmredi_x/y/rtransport
3083        added flag for excessive storing to avoid recomp. of
3084        u/v/rtans, dTdx/y/z
3085        -> this is not really necessary and very memory-consuming
3086      * adgmredi_slope_psi:
3087        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3088      * gmredi_slope_limit
3089        re-activated full calculation of taperfct for case 'ac02'
3090    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3091    
3092    checkpoint47i_post
3093    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3094    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3095      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3096    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3097    o gmredi: fix few bugs.
3098    
3099    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3100    This will be a good checkpoint to plug into the ecco-branch.
3101    o few modif.'s to get latest version adjointed
3102      (mainly kick out code in ini_linear_phisurf)
3103    o modif's to run adjoint with exactConserv
3104    o case GM_BOLUS_ADVEC should be cleaned
3105      S/R gmredi_slope_psi should be cleaned
3106    o verification/carbon now has exactConserv=.TRUE.
3107    
3108    checkpoint47g_post
3109    o time-average AIM output: becomes independent from statvars time-average
3110      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3111    o After TAF bug fix:
3112      Tested adjoint of gmredi package.
3113      Tests were done with checkpoint47 rather than with latest
3114      checkpoint47f_post since the latter is broken for the adjoint
3115      verification/carbon/ contains both ADM and TLM gradient checks.
3116    Here they are, before they get changed/lost/stolen.
3117    Mostly modif.'s to fix numerical sensitivities.
3118    Gradient checks OK for
3119    - GM_taper_scheme:
3120      * clipping
3121      * ac02
3122      * linear
3123      * glw91
3124      * dm95
3125      * ldd97
3126    - GMREDI_OPTIONS:
3127      * GM_VISBECK_VARIABLE_K
3128      * GM_NON_UNITY_DIAGONAL
3129      * GM_EXTRA_DIAGONAL
3130      * GM_BOLUS_ADVEC
3131    in conjunction with data.gmredi parameters to be checked in
3132    in a few minutes under verification/carbon/code/
3133    
3134    checkpoint47f_post
3135    Merging from release1_p10:
3136    o modifications for using pkg/exf with pkg/seaice
3137      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3138        and SEAICE_EXTERNAL_FLUXES
3139      - pkg/exf CPP options EXF_READ_EVAP and
3140        EXF_NO_BULK_COMPUTATIONS
3141      - usage examples are Experiments 8 and 9 in
3142        verification/lab_sea/README
3143      - verification/lab_sea default experiment now uses
3144        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3145    
3146    checkpoint47e_post
3147    o created a tag prior to creating a branch
3148    
3149    checkpoint47d_post
3150    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3151      at the bottom boundary had an erroneous half slip boundary condition
3152    o added bottom drag and no slip boundary condition capabilities to
3153      oceanic pressure coordinates code
3154    o added new verification experiment global_ocean_pressure, this experiment is
3155      also described in the tutorial section of the manual
3156    checkpoint47d_pre
3157    
3158    checkpoint47c_post
3159    o Added a verification experiment for a global cubed-sphere ocean run
3160      -  verification/global_ocean.cubed32x32x30
3161      -  uses pkg/therm_seaice and pkg/bulk_forcing
3162    
3163    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3164    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3165      when using P-coordinate; only implemented for atmospheric config.
3166    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3167      NOTES: requires option NONLIN_FRSURF to be "#define".
3168    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3169    
3170    checkpoint47b_post
3171    Merging from release1_p9:
3172    o pkg/seaice
3173      - removed GOTO's and added taf directives
3174      - double precision constants to reduce the g77 (Linux)
3175        to F77 (SGI) differences reported in release1_p8
3176    o tools/genmake
3177      - added SGI options
3178    o verification/testscript
3179      - updated to that of checkpoint47a_post
3180    o verification/global_ocean.90x40x15/input/eedata
3181      - modified for SGI f77 compatibility
3182    o verification/lab_sea
3183      - added description of sea-ice model
3184      - added missing matlab routines
3185      - added test of thermodynamics parallelization
3186    
3187    checkpoint47a_post
3188    o new pkg: aim_v23
3189     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3190       for now, keep the same surface forcing as before.
3191     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3192     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3193     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3194    o add diagnostic of surface correction term in monitor output
3195    
3196    o bulk_force and therm_seaice
3197    - Two packages:  bulk_force (Bulk forcing)
3198      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3199    - Earlier integration from Stephaine Dutkiewicz
3200      and Patrick Heimbach.
3201    - Two ifdef statements for compile time,
3202       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3203    
3204    checkpoint47
3205    differentiable version of checkpoint46n_post
3206    o bug fix in quasihydrostaticterms
3207    o * "clean" adjoint code (in terms of extensive recomputations)
3208        can now be obtained for all GMREDI options (i.e. for
3209        - GM_VISBECK_VARIABLE_K
3210        - GM_NON_UNITY_DIAGONAL
3211        - GM_EXTRA_DIAGONAL
3212        - GM_BOLUS_ADVEC )
3213      * However, wrong gradient check problem remains unsolved.
3214      * New CPP options have been introduced for different
3215        tapering schemes
3216    o external_fields_load now part of differentiation list
3217    o pressure needs multiple storing;
3218      would be nice to have store_pressure at beginning or
3219      end of forward_step, e.g. by having phiHyd global (5-dim.)
3220      (NB: pressure is needed for certain cases in find_rho,
3221      which is also invoked through convective_adjustment).
3222    o recomputations in find_rho for cases
3223     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3224    o #define ATMOSPHERIC_LOADING should be differentiable
3225    o ini_forcing shifted to begining of initialise_varia
3226    o Incorporating QNVS line search routines into MITgcm
3227      (this is separate code, and therefore not under pkg)
3228      lsopt/, optim/
3229    o Updated verification/carbon/
3230      - #define GM_VISBECK_VARIABLE_K
3231      - GM_taper_scheme    = 'ldd97'    
3232    
3233    checkpoint46n_post
3234    Merging from release1_p8:
3235    o verification/natl_box:
3236      updating new external_fields_load routine
3237    o New package: pkg/seaice
3238      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3239      The sea-ice code is based on Hibler (1979-1980).
3240      Two sea-ice dynamic solvers, ADI and LSR, are included.
3241      In addition to computing prognostic sea-ice variables and diagnosing
3242      the forcing/external data fields that drive the ocean model,
3243      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3244      The implied surface heat flux is then stored in variable
3245      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3246      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3247      non-local transport term.  Because this call precedes model
3248      thermodynamics, temperature under sea-ice may not be "exactly" at
3249      the freezing point by the time theta is dumped or time-averaged.
3250      N.B.: fairly large differences in accuracy occur across
3251            different platforms/compilers; comparison between
3252            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3253            generated output gives:
3254       T           S           U           V
3255      C D M    c        m  s        m  s        m  s        m  s
3256      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3257      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3258      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3259    
3260      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3261    o GAD:
3262      - generated new common blocks to account for call of
3263        same gad routines with differing traceridentities
3264        (needed to modify tracerIdentity indices in GAD.h)
3265      - generated separate common blocks for case useCubedSphereExchange
3266        (Department of Futurology)
3267      - parameter lists to gmredi_?transport: added tracerIdentity
3268      - added new key indices to tamc.h
3269    o external_fields_load:
3270      - added this routine to TAF list
3271      - needed to make some common blocks global and additional storing
3272        along the same lines as exf package (checkpoint_lev?_directives.h)
3273    o exf:
3274      updated external forcing package
3275      - bug fixes carried over from ecco-branch
3276        (missing OBCS_OPTIONS.h in two routines)
3277      - enable easy to use "no forcing".
3278      - added exf I/O for atmospheric loading
3279      - added exf I/O for runoff data
3280      - transfered scaling between exf <-> MITgcm to exf namelist
3281    o Adding new verification experiment global_with_exf.
3282      This verification experiment is almost identical to the
3283      global_ocean.90x40x15 experiment, except that it uses
3284      the exf (and cal) package instead of the
3285      external_fields_load routine (cf README file).
3286    
3287    checkpoint46m_post
3288    o modified testscript to return -- when there are no lines of "%MON" output
3289    o added new flag "quasiHydrostatic" for QH mode
3290      and new routine quasihydrostaticterms()
3291    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3292      New routine: mom_u_coriolis_nh()
3293    o fixed sign of non-hydrostatic metric terms in u and v equations.
3294      Depend on correct sign of gravitySign.
3295    o added work.pc* to .cvsignore in aim directories using ifc
3296    o introduced flag for controllin non-hydrostatic metric terms
3297    o removed gravitySign from PARM04
3298    o switched to g77/ifc from pgf77 in aim experiments
3299    
3300    checkpoint46l_post
3301    o made convective adjustment work with pressure coordinates:
3302     - changed the direction of k-loop in convective_adjustment.F for the
3303       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3304     - adjusted the reference pressure k-index in convective_adjustment.F
3305     - adjusted the convection condition in convect.F (in analogy to
3306       calc_ivdc.F)
3307     - convective_adjustment no longer computes anything on the halos
3308     - removed the warnings about negative salinity from find_rho.F and
3309       find_alpha.F; instead the new routine look_for_neg_salinity, called
3310       at the beginning of find_rho, find_alpha, and find_beta, does a
3311       check of the entire slice, if CPP-option
3312       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3313    checkpoint46l_pre
3314    
3315    checkpoint46k_post
3316    o fixed the verification/global_ocean.90x40x15 experiment:
3317     - new bathymetry (the world according to A., JMC, and M.)
3318     - new initial fields and forcing fields (*.bin files)
3319     - new POLY3.COEFFS (for the next release one should switch to a full
3320       equation of state: JMD95P or MDJWF)
3321     - fixed several errors and redundancies in the data file
3322     - experiment uses looped cells
3323     - added matlab directory with diagnostic scripts for plotting of output
3324    
3325    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3326     - read AIM physics parameters from a file (data.aimphys)
3327     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3328    
3329    checkpoint46j_post
3330    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3331    o move wVel computation at the end of the time step, in S/R integr_continuity
3332    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3333    o update timeave pkg for wVel diagnostic.
3334    checkpoint46j_pre
3335    
3336    checkpoint46i_post
3337    o Clean up AIM package (and keep the results unchanged):
3338      include CPP_OPTION and use IMPLICT NONE in all routines ;
3339      declare all the variables _RL ; use _d 0 for all numerical constants.
3340      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3341    
3342    checkpoint46h_post
3343    o cleaned up the use of rhoNil and rhoConst.
3344      - rhoNil should only appear in the LINEAR equation of state, everywhere
3345        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3346        and the dynamical equations are all divided by rhoConst
3347    o introduced new parameter rhoConstFresh, a reference density of fresh
3348      water, to remove the fresh water flux's dependence on rhoNil. The default
3349      value is 999.8 kg/m^3
3350    o cleanup up external_forcing.F and external_forcing_surf.F
3351      - can now be used by both OCEANIC and OCEANICP
3352    checkpoint46h_pre
3353    
3354     Added code to convert surface volume flux (fresh water) into
3355     a mass flux when using P coordinates in the ocean (OCEANICP).
3356     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3357    
3358    checkpoint46g_post
3359    o Include a new diagnostic variable phiHydLow for the ocean model
3360      - in z-coordinates, it is the bottom pressure anomaly
3361      - in p-coordinates, it is the sea surface elevation
3362      - in both cases, these variable have global drift, reflecting the mass
3363        drift in z-coordinates and the volume drift in p-coordinates
3364      - included time averaging for phiHydLow, be aware of the drift!
3365    o depth-dependent computation of Bo_surf for pressure coordinates
3366      in the ocean (buoyancyRelation='OCEANICP')
3367      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3368        Theta, Salinity, and Pressure in the parameter list. This routine is
3369        presently contained in find_rho.F. This routine does not give the
3370        correct density for 'POLY3', which would be a z-dependent reference
3371        density.
3372    o cleaned up find_rho
3373      - removed obsolete 'eqn' from the parameter list.
3374    o added two new verification experiments: gop and goz
3375      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3376    checkpoint46g_pre
3377    
3378    checkpoint46f_post
3379    o Enable tangent linear (forward mode) gradient checks:
3380      - extended active file handling to g_... files
3381      - added TANGENT_SIMULATION to theSimulationMode
3382      - extended grdchk package accordingly
3383    o added tangent linear setup in verification/carbon/code_ftl
3384    o added adjoint setup in verification/front_relax/code_ad
3385    
3386    checkpoint46e_post
3387    o Added new equation of state -> MDJWF
3388      - EOS of McDougall et al., 2002, JAOT, submitted
3389      - caveat: the equation of state is only valid for a smaller (more
3390        realistic?) range of values than JMD95P/Z and UNESCO
3391      - added masks to the calculation of pressure in store_pressure
3392      - added more check values for density in check_eos (ini_eos.F), some of
3393        the old check values are out of the range of the MDJWF-eos, so don't
3394        expect perfect matches for those
3395    checkpoint46e_pre
3396    
3397    checkpoint46d_post
3398    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3399      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3400      case of pressure coordinates. eosType='JMD95Z' in
3401      combination with buoyancyRelation='OCEANICP' now causes an error.
3402    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3403      in find_alpha/beta.
3404    checkpoint46d_pre
3405    
3406    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3407      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3408    
3409    checkpoint46c_post
3410    o Changes necessary for ocean in p-coordinates
3411     -  Added new buoyancy relation = 'OCEANICP'
3412     -  Added new parameters = gravitySign (this used to be contained inside
3413        the factor dRdZ which I added when we first switched to R coordinates).
3414     X GM/Redi is not compatible (yet)
3415     X bottom drag and no-slip need to be debugged.
3416    checkpoint46c_pre
3417    
3418    checkpoint46b_post
3419    o Added new equation of state -> JMD95Z and JMD95P
3420      - EOS of Jackett and McDougall, 1995, JAOT
3421      - moved all EOS parameters into EOS.h
3422      - new routines ini_eos.F, store_pressure.F
3423    o Added UNESCO EOS, but not recommended because it requires
3424      in-situ temperature (see JMD95)
3425    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3426      unesco.f to be used with POLY3
3427    checkpoint46b_pre
3428    
3429    checkpoint46a_post
3430    o Added (atmospheric) pressure loading
3431      - new field in FFIELDS.h, etc...
3432      - new cpp flag ATMOSPHERIC_LOADING
3433    o Changed hFacC to _hFacC in calc_phi_hyd.F
3434    o Added SHORTWAVE_HEATING to some files for consistency
3435    checkpoint46a_pre
3436    
3437    checkpoint46
3438    further merges from release1_p5
3439    o new ctrl package
3440      - adopted from ECCO environment to enable optimization
3441      - added Eliassen Palm fluxes to controls
3442    o added Eliassen Palm flux controls to gradient check package
3443    o cost package
3444      - Compatible with new ctrl package
3445      - added Eliassen Palm cost hooks
3446      - modif's of existing cost functions
3447    o Adjoint-related bug fixes in kpp:
3448      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3449      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3450    o autodiff package
3451      - flow directives:
3452        + new for S/R do_the_model_io
3453        + enhanced for S/R checkpoint
3454        + new gmredi.flow
3455      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3456        disable adcommon.h/g_common.h by default.
3457      - fixed problem for adjoint of global_max
3458    o modified verification/carbon/
3459    o New setup for adjoint of global_ocean
3460    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3461    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3462    o incorporated hooks for sponge layer code (external_forcing.F)
3463    
3464    checkpoint45d_post
3465    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3466    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3467      (affects plume_on_slope "cg2d" output)
3468    o add new parameter deltaTfreesurf for free-surface time stepping
3469    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3470  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3471  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
3472  o add new flags:  o add new flags:

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