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revision 1.32 by adcroft, Thu Nov 30 16:51:40 2000 UTC revision 1.991 by jmc, Fri May 16 02:05:51 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 move from external_forcing_surf.F to ini_forcing.F
8      the p-coord. hack consisting in using pLoad to set phi0surf ;
9      update output of tutorial_global_oce_in_p (affected @ truncation level).
10    o Freshen up a bit hs94.1x64x5, notably:
11      remove rotationPeriod and tRef=5*0. (adjoint only), and add exactConserv=.TRUE.
12    o pkg/generic_advdiff:
13      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
14      applies to files where Temperature & Salinity 2nd Order moments are used.
15    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
16      this uses a dynamically allocated internal state data structure
17      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
18      and requires a fortran 90 compiler
19    
20    checkpoint59q
21    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
22       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
23    o Refresh tutorial_global_oce_biogeo, notably:
24      - change bathymetry (put back seamounts in ACC, use hFacs)
25      - change EOS (POLY3 --> JMD95Z)
26      - use Bryan-Lewis vertical diffusivity
27      - use multidimensional advection
28      - remove old virtual virtual in dic pkg, now done through ptracer pkg
29      - change a couple of parameters in dic pkg
30    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
31    o pkg/obcs: change default to OBCSfixTopo = .true.,
32      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
33      - replace "debugMode" with "debugLevel .GE. debLevB"
34    o implementation of TAF directives for gchem,cfc,dic
35    o remove "exp5" (replaced by tutorial_deep_convection).
36    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
37      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
38      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
39      --> changes results in exp4, seaice_obcs
40    o tutorial_deep_convection :
41      update the set-up and increase resolution and domain size ; start
42      from pseudo initial conditions = output at t=120mn in order to see
43      something happening when running testreport.
44    o pkg/seaice: add os7mp as an advection scheme
45                  add check for advection schemes
46                  add a flag for restoring T and S underneath sea ice
47    o pkg/my82: add netcdf-support and diagnostics
48    o thsice pkg:
49      - Now hsMax limits snow height by turning it into ice following
50        flooding scheme (and now conserving energy)
51      - Slight rewriting of the formula in thsice_calc_thick.F
52      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
53      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
54    
55    checkpoint59p
56    o gchem / dic / cfc :
57      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
58      - add new parameter files: "data.dic" & "data.cfc" ;
59      - various re-arrangement in initialisation & header file ;
60      - fix tutorial_global_oce_biogeo for multi-threaded test.
61    o pkg/dic: test for "pickup_dic" file when restarting ;
62      if no pickup-file, can restart with a re-initialised pH (same as it did
63      before) providing pickupStrictlyMatch is set to False.
64    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
65      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
66    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
67      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
68    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
69     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
70       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
71    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
72       scheme to use for vorticty-term ;
73     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
74       (with default selectVortScheme, return to original discretisation)
75     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
76    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
77    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
78      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
79      also fix diagnostics VISCAHW & VISCA4W.
80    
81    checkpoint59o
82    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
83    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
84      move a few statemens out the main loop into separate loops
85    o pkg/shelfice:
86      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
87        (kg/m^2/s), does not break tests, because in verification/isomip,
88        rhoConstFresh=rhoConst (by accident)
89      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
90      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
91        new file model/src/seawater.F, so that they are available for all pkgs.
92      - convert potential temperature into in-situ temperature. This changes the
93        isomip tests => update tests
94    o add a flag writePickupAtEnd (default=true) to be able to suppress
95      writing a pickup at the last timestep
96    o tools/mpack-1.6 :
97      - disable automake (not working) and autoconf (not needed).
98      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
99        also cleaner with much less compilation warnings.
100    o pkg/profiles:
101      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
102      (for "less than 32 characters name" compiler requirement)
103    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
104      conditions that have a different sampling frequency than S/T/U/V obcs
105    o pkg/diagnostics (stats-diags):
106      - fix global Min/Max in case 1 processor get only empty tiles
107    o genmake2: replace (4 times)
108         make genmake_tc_1.o >> genmake_warnings 2>&1
109      with
110         COMM="$CC $CFLAGS -c genmake_tc_1.c"
111         echo $COMM >> genmake_warnings
112         $COMM >> genmake_warnings 2>&1
113      to make genmake2 always see the value of CC as specified in the optfile.
114    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
115      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
116      - modify verification advect_cs test to test SOM-advection on CS-grid.
117    o pkg/ctrl:
118      - Rewrite of ctrl_map_ini_ecco.F,
119        introducing a generic routine (ctrl_map_ini_gen.F).
120      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
121    
122    checkpoint59n
123    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
124      number in dedicate array "hdiag":
125      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
126        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
127      - many small changes (integer format) for large number of diagnostics
128      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
129        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
130    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
131      usingSphericalGrid, this allows to define the rotated grid coordinates
132      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
133      geographical coordinates according to the inverse of the rotation defined
134      by the Euler angles, so that Coriolis parameter and online-interpolation by
135      exf works with the geographical coordinates on XC/YC/XG/YG.
136      Naturally, this feature does not work with all packages, so some
137      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
138      profiles), because there the coordinates are assumed to be regular
139      spherical grid coordinates.
140    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
141      - introduce isopycnal diffusion coefficient control.
142    o tools/adjoint_options:
143      - additional control vector components.
144    o pkg/mnc: have mnc create marginally meaning full coordinate variables
145      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
146    o pkg/mypackage:
147      - add example of read/write pickup for state-var ;
148      - add entry points to the main code for state-vars diags & write-pickup.
149    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
150      transitions for useExfYearlyFields
151      - add new subroutine that determines the file to read from for
152        use*YearlyFields = .TRUE. and .FALSE.
153      - add a verification experiment to global_with_exf that tests
154        useExfYearlyFields with USE_EXF_INTERPOLATION defined
155    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
156      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
157      subroutines (which could be generated from a template, because they are
158      almost identical), for now they are included in obcs_prescribe_read.F for
159      simplicity
160    o pkg/exf:
161      - add a little more diagnostic to exf_interp_read (in analogy to
162        mds_read_field, can be turned off with debugLevel < debugLevA=1)
163      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
164        ugly but fast by unrolling short inner loops, inserting a unroll=8
165        directive in routine lagran, and splitting a loop and making do while the
166        outermost loop (the latter requires the intoduction of index arrays)
167    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
168    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
169      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
170    o verification/seaice_obcs: updated for restart test and latest options
171    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
172      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
173      for now this is only available for the C-grid code and also within
174      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
175    
176    checkpoint59m
177    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
178      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
179    o gad_som : fix flux output (& diagnostics) to have same units as other  
180      advection scheme fluxes (was previously multiplied by deltaT).  
181    o added verification/seaice_obcs both to test seaice open boundaries
182      and to provide an example matlab scrpt for generating them
183    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
184    o pkg/salt_plume: clean up salt_plume_frac.F to
185      remove redundancy in PlumeMethod 1 and 4
186    o pkg/kpp: added saltplume diagnostics
187    o pkg/obcs and pkg/seaice:
188      - do not set uice and vice to zero when OB*icefile are unspecified
189      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
190      - moved seaice tracer obcs after call to seaice_growth
191    o pkg/salt_plume: added various options for salt plume depth
192      criterion and for vertical distribution of the salt
193    
194    checkpoint59l
195    o pkg/ptracers: new version of ptracers pickup:
196      read meta file and write only fields which are needed to restart.
197      ( same logic as main pickup file ; also using pickupStrictlyMatch )
198    o pkg/seaice:
199      - add timescale for melting due to warm mixed layer as a means of
200        setting SEAICE_availHeatFrac more conveniently
201      - add a CPP-flag/runtime parameter check for flooding algorithm
202      - reformulated availHeat in seaice_growth.F to be independent of AREA
203    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
204      unit changes
205    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
206    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
207      SX vector computer.
208    o pkg/seaice:
209      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
210        seaice forcing fields can now be read only through pkg/exf
211      - removed some unused halos
212    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
213    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
214      or U/VICE from U/VWIND before computing U/VSTRESS
215    
216    checkpoint59k
217    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
218      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
219    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
220      all experiments pass when compile with un-initialised var. checking option.
221    o added pkg/salt_plume
222    o script to test restart (for now, in MITgcm_contrib/jmc_script)
223    o pkg/seaice: new read/write pickup version.
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: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
227    o lab_sea.hb87: modify the domain & update output.hb87.txt :
228      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
229      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
230      process. Fixed here by closing the domain at the Northern boundary.
231    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
232    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
233      a set of consecutive levels in/from a 3-D array.
234    o pkg/ptracers:
235      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
236      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
237    
238    checkpoint59j
239    o in pkgs: dic, obcs, offline, rbcs:
240      standard way to compute coeff. for time interpolation between 2 time reccords
241      which retains full precision (& make results less dependent on compiler).
242      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
243    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
244      packages instead of reading ice cover and wind speed separately
245    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
246     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
247      to allow to compile customized code before the update)
248    o cleaning-up:
249      - fix CPP instruction syntax in pkg/obcs
250      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
251        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
252      - fix some threads issue in IO parts.
253    o pkg/dic:
254      - add tons of "_d 0" (--> much better testreports !)
255       and then update outputs of tutorial_global_oce_biogeo
256    o pkg/mom_fluxform:
257      add a special version of momentum advection intended to conserve momentum
258      next to a bathymetry step or a coastline edge. (default = off = #undef)
259    o new read/write pickup version:
260      - for now, only implemented for main (mdsio) pickup file.
261      - write out only what is needed to restart; merge pickup_nh , pickup_ph
262        and main pickup together.
263      - read meta file; read only what is needed to restart; stop if a field
264        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
265        if it make sense (even if the restart is not perfect).
266      - if no meta file, assume that pickup to read corresponds exactly to
267        a pickup that would currently be written.
268      - read pickup written in the old format (until checkpoint59i) if it
269        recognizes an old meta file (no field-list).
270      - add a meta file in exp. which starts from a pickup: 2 cases:
271        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
272         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
273        b) a meta file describing the content of the associated pickup file
274         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
275    o pkg/mdsio & pkg/rw:
276      - new routine to read a meta file ; new set of routine to read
277        Multiple-fields file (with meta file).
278    o added open boundary conditions capability for seaice
279        HSNOW, HSALT, UICE, and VICE
280    
281    checkpoint59i
282    o adjoint:
283      * fix multiDimAdvection adjoint
284        (partial recomputation problem by TAF for fVerT(:,:,kDown)
285        and comlev1 size definition (maxpass vs. max. number of tracers)
286      * verification/global_ocean.90x45x15 adjoint now tests
287        NLFS and multiDimAdvection using DST3 (=30)
288      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
289    o pkg/kpp: add "_d 0" to real constant (if missing);
290      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
291      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
292    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
293      for internal parameters related to restart process (formerly from PARAMS.h)
294      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
295    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
296      as argument. (only atm2d & obcs write_pickup have not yet been updated)
297    o pkg/monitor:
298      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
299      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
300      - account for deep Atmosphere factor and density factor (anelastic)
301    o added open boundary conditions capability for seaice HEFF and AREA
302    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
303      thermodynamics
304      - requires a little reorganization, which affects the testreport results
305        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
306        so that now the conservative form is tested
307      - add a few comments
308    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
309    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
310    o add new diagnostics to seaice: advective, diffusive fluxes (only for
311      multidim-advection, for scheme 2 they are not filled) and transports,
312      thermodynamic growth rates
313    o change units of EmPmR (inside the code, + within coupling interface)
314      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
315      Affects results @ truncation level (cg2d match) and update output of
316       experiments: lab_sea(6), global_ocean.90x40x15(10),
317      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
318      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
319      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
320      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
321    
322    checkpoint59h
323    o pkg/exf:
324      - improve vectorization by moving if-statement out of loops in
325        exf_mapfields, exf_radiation
326      - exf_bulkformulae.F: introduce 2D fields and vectorize code
327    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
328    o testreport:
329      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
330        monitor & update offline_exf_seaice exp. output.
331      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
332    o pkg/seaice:
333      - bug fix in the evp solver: boundary conditions were affected be
334        masking of zMax/zMin (changes results)
335      - minor bug fix in boundary conditions in seaice_calc_strainrates
336        (changes results for no_slip)
337      - seaice_lsr.F: make interpolation of eta dependent on boundaries
338      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
339      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
340        stress formulation and no-slip boundary conditions
341    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
342      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
343    o pkg/seaice: a first HSALT time stepping equation has been checked in
344    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
345      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
346      without requiring DO-IF statements
347    o pkg/thsice:
348      use continuous power-law function for partition of energy between lateral
349      melting/freezing and thinning/thickening ; old code using step function
350      still available with #undef THSICE_FRACEN_POWERLAW
351      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
352    o testreport: change AD testing : check against results/output_adm.txt
353      using same scripts as for forward test.
354    
355    checkpoint59g
356    o adjoint testing: in preparation for changing testreport:
357      - output format: cost and grad written on separated lines
358      - ad output results in directory "results" (instead of "results_ad")
359    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
360    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
361    o pkg/ecco: allow user defined cost function contributions
362    o testreport:
363      Allow to choose (per experiment) the list of tested output variables
364       and the main variable (used to issue a pass/FAIL ) ;
365      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
366      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
367      Also modify printing of summary:
368       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
369       b) echo the list of tested variables in the individual summary.txt of
370          each experiment.
371    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
372      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
373      (but still depend on the tile decompostion of the domain).
374    o pkg/seaice: change a discretization detail to make the B-grid code
375      "more symmetric". This change is likely to remove all "ridges/leads" that
376      where quasi-aligned with the grid in B-grid solutions. It may also be
377      the solution to the stress coupling issues with the B-grid.
378    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
379      remove .cvsignore from input dir. (since testreport no longer run here).
380    o pkg/thsice:
381     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
382     - fix reshaping of sea-ice just after advection:
383       melt all the ice only if ice-volume is too small.
384     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
385       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
386     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
387    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
388      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
389    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
390      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
391      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
392      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
393      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
394      -> update output.txt
395    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
396     this affects truncation error: -> update output.txt of exp:
397      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
398      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
399    
400    checkpoint59f
401    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
402    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
403      a bounded range (in forward mode)
404    o pkg/ecco, ctrl, autodiff and mom_common:
405     internal parameter controls, completements of implementations
406    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
407    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
408      (not seem any difference in testing results).
409    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
410       at face corners.
411    o pkg/generic_advdiff:
412     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
413      loop range indices for computing vertical advection tendency
414      and do the calculation in the interior only (no overlap) ;
415      for now, only implemented for SOM advection (to save CPU time).
416     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
417    o exch2 adjoint
418      First set of changes:
419      - add exch2 hand-written adjoint templates
420      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
421        This will require cleanup in pkg/autodiff/*.F
422        (changed routines currently kept separate in verif. code/)
423      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
424        that used to hide exch2 or cubed-sphere specific code
425        (commented via 'cph-exch2')
426    o pkg/seaice
427      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
428    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
429       output of global_ocean.cs32x15.thsice .
430    
431    checkpoint59e
432    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
433      for B-grid vector (not yet tested) and C-grid vector (<- only used
434      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
435    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
436      (#ifdef ALLOW_SALT_PLUME)
437    o gather_2d/scatter_2d: removed halo regions
438    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
439      scheme and the corresponding test case (under front_relax dir). For now,
440      only available with Skew-flux form and not yet tested in realistic set-up.
441      adjoint: store directives updated, but gradient checks deteriorated,
442      so maybe GM/Redi adjoint is now broken.
443    o seaice adjoint
444      * add AREA, HEFF, HSNOW as control variable
445        (should not change lab_sea results)
446      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
447    o pkg/seaice:
448      * added computation of saltFlux in seaice_growth;
449        For time being, sea ice salinity is assumed constant
450        contribution of snow flooding to freshening of sea ice is neglected.
451        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
452        defaults to 0.0 in order to maintain backward compatibility.
453        Typical values for SEAICE_salinity are 4 to 10 g/kg.
454      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
455      * added SEAICE_availHeatFrac, which specifies fraction of surface level
456        heat content used to melt or grow ice
457      * commented out cap of HICE: it helps keep ice thinner
458      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
459      * applied OBCS T/S mask to HEFFM sea ice mask
460    
461    checkpoint59d
462    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
463     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
464     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
465    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
466     and change default value of parameter "GM_Small_Number";
467     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
468       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
469       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
470    o pkg/ecco: cost function when applying pkg/smooth to controls
471    o pkg/ctrl: add forcingPrecond run time parameter
472    o pkg/seaice:
473     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
474     - fix bug in metric terms of u-equation in LSR solver (implicit part),
475       changes verification/lab_sea
476     - rearrange implicit part of u-equation in LSR solver to make it easier to
477       read, understand, and debug. This causes changes at the truncation level.
478     - fix (serious) bug in the boundary conditions (sign error in the implicit
479       part) of the LSR solver. Changes all LSR results.
480     - fixed problem with HSNOW initialization to avoid thick snow when AREA
481       is initilized with small values - does not change lab_sea results.
482     - added HsnowFile initialization capability
483    o pkg/smooth: addition to model/src and pkg/ctrl so allow
484     initialization of pkg/smooth and application to control vector
485    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
486    o dependencies: pkg/profiles requires pkg/cal
487    o pkg/profiles:
488     - added option ALLOW_PROFILES_GENERICGRID
489         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
490         that interpolation information (grid points and coefficients) is provided
491         within the netcdf input files.
492         -> sample matlab scripts can be found in MITgcm_contrib/gael
493         that allow you to prepare netcdf input files.
494     - also modified: cleaner include statements, cleaner error print statements,
495       cleaner stops when error, and more tests of the netcdf input files consistency.
496    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
497    o pkg/seaice:
498     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
499       requires a new routine: seaice_diagnostics_fill.F
500     - make sure that seaice does not move if not forced (pressure replacement
501       method, Hibler and Ip, 1995), changes results
502     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
503     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
504       It is turned off by default (=-1.), because it changes the results.
505     - make it possible to read AREA from a file, too.
506    
507    checkpoint59c
508    o add S/R and diagnostics for oceanic mixed-layer depth
509    o move GMRedi call after all vertical mixing schemes (including KPP)
510    o pkg/thsice:
511     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
512      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
513    o pkg/obcs:
514     - bug fix for balance code
515    o pkg/seaice:
516      - allow values of SEAICE_elasticParm > 1
517      - add new parameter SEAICE_evpTauRelax as an alternative
518        to SEAICE_elasticParm
519      - make lsr boundary conditions free slip (by default), changes result
520      - add code for no slip boundary conditions for lsr
521      - set minimum of zeta to zero (and not 4e8) (changes results)
522      - add a cap on AREA after advecting AREA if seaice_growth is not called
523    o change calculation of Visbeck K:
524      - no longer depend on tapering scheme; instead, compute slope (limited
525        by GM_maxSlope). this is equivalent to what was comuted before with
526        clipping or linear tappering.
527      - fix vertical averaging (wrong by 1/2 level)
528      - leave the old version (but will not be maintained) within
529        #ifdef OLD_VISBECK_CALC / #endif
530      - update output of exp. ideal_2D_oce
531    o change error catch in calc_r_star to improve vectorization
532    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
533      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
534    o adjoint:
535      Re-organized adjoint checkpointing according to Matt Mazloff
536      (but with modifs/completions/cleanups)
537      Storing is now bundled into large arrays to optimized I/O
538      (and second step in cleanup of the_main_loop)
539    
540    checkpoint59b
541    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
542      - export/import (between ocean & coupler) fields needed for ocean DIC.
543    o pkg/seaice:
544      - get rid of three more exchanges seaice_calc_viscosities (required
545        different loop boundaries in seaice_lsr and seaice_ocean_stress)
546      - bug fix in seaice_ocean_stress (update of lab_sea required)
547      - reduce loop boundaries to necessary minimum also in seaice_evp
548      - go back to the old way of computing deltaC/Z as the adjoint likes that
549        better
550    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
551      passive tracer to an Age Tracer) + update output.txt
552    o pkg/exf:
553      - implement A-grid / C-grid selection for wind-stress input files.
554      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
555      for now, in exf_bulk_largeyeager04.F only :
556      - change implementation for case where windspeed + 2. components wind-stress
557        are read-in. AND use rhoConstFresh to convert evap.
558    o pkg/seaice:
559      - use correct EXCH_UV for wind-forcing (on A-grid).
560      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
561        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
562    o pkg/exf:
563      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
564      EXF_INTERPOLATION:
565      - merge global_with_exf/code version of exf_interp_read.F
566        to the main code ;
567      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
568        reading the file ; Important: This options needs to be defined to recover
569        previous code.
570        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
571      - no longer loose real*8 precision along the way when using exf_iprec=64.
572    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
573      - change discretisation of evp-solver in order to avoid another exchange
574        (changes lab_sea) and clean up a little
575      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
576        help the adjoint (this also changes the results slightly)
577      - add a few "_d 0" where they had been missing in seaice_evp.F
578      - cleaning up: remove unused seaice_calc_rhs.F
579    o pkg/exf: some cleaning-up:
580      - change various "constants" into runtime parameters
581      - cleaned-up Large&Yeager04 routine which should eventually
582        replace exf_bulkformulae.F (changed names of S/R and CPP)
583        and merged various ALLOW_ATM_WIND options
584     only used with thsice pkg (in thsice_get_exf.F):
585      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
586        which are used when useStabilityFct_overIce=TRUE (= the default)
587      - change default values of ice & snow emissivity and scale downward LW
588        by ice & snow emissivity.
589    o pkg/thsice:
590     fix few little problems, in thsice_calc_thickn.F:
591      - growth vertically (and not laterally) if iceFrac == iceMaskMax
592      - melt only laterally if hIce < hThinIce (as the comments say)
593      and in thsice_extend.F:
594      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
595      - start to form ice as soon as the minimum ice-volume is reachable.
596     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
597      and cpl_aim+ocn
598    o pkg/kpp
599     - move computation of surface related input fields to KPP into a new
600       subroutine kpp_forcing_surf.F
601     - remove wrong (within bi,bj loops) EXCH calls.
602     - little cleaning (add argument myThid in last position, cvs header ...)
603     - for now, fix conservation problem by exchanging KPPviscAz (may not
604       be the best fix)
605    o pkg/seaice
606     - check for inconsistent evp parameter/cpp-flag combination
607     - remove leftover errIO flat for obsolete name list error handling
608    o OpenAD
609     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
610    
611    checkpoint59a
612    o pkg/seaice: some parameter clarifications and a little bit of clean up
613    o pkg/thsice: rename run-time parameters:
614       himin       -> hIceMin
615       himin0      -> hThinIce
616       hihig       -> hThickIce
617       i0          -> i0swFrac
618       transCoef   -> bMeltCoef
619       frac_energy -> fracMelting
620      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
621       with default values (for now) that do not change the results.
622      remove old version of thsice vars advection in pkg/seaice.
623    o in FFIELDS.h:
624      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
625      - make pLoad & sIceLoad always available (but still only used if
626         ATMOSPHERIC_LOADING is #define).
627    o pkg/kpp: replaced _KPP_RL with _RL
628    o bug fixes for vertical diffusivity computations when both KPP and
629        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
630        are no longer updating the vertical diffusivity array
631        (passed as argument) but are (re-) setting those arrays.
632    o pkg/seaice: fix bug in evp solver, while doing that
633      - change (improve?) discretization of stress computations for both
634        cgrid-lsr and evp solver
635      - add a new routine to compute strain rates
636      - the above changes lab_sea results
637      - add no slip conditions for evp solver (off by default), lsr-version
638        may follow
639      - fix exchange for shear at Z-points (does not change lab_sea)
640      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
641        (to force the user to pick a time step since there is not "safe" way
642        of choosing it)
643      - add principal stress diagnostics
644      - rearrange fields for evp a little to avoid having to call a: too many
645        exchanges and b: exchanges for stress trensor components which we do
646        not have.
647      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
648        of evp, complete rewrite for lsr case (latter is does not yet work
649        in all cases)
650    o pkg/kpp: add code to have mixing in shelf ice caverns
651      - add myThid to all kpp routines (long overdue)
652    
653    checkpoint59
654    o pkg/exf:
655      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
656        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
657      - move exf header files from lower_case.h to UPPER_CASE.h ;
658        add missing cvs Header & Name
659      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
660      - add namelist param. selectStressGridPosition, exf_monFreq
661      - retire many _CLIM routines, and remove data.exf_clim
662        + params moved to data.exf
663        + climsst, climsss now handled by exf_set_gen, i.e.
664          climss?period=0 refers to constant field,
665          climss?period=-12 to monthly forcing
666      - split up namelists in data.exf
667    o pkg/seaice:
668      - remove seaice_exch and seaice_exch_uv
669      - remove superfluous exchange of theta
670      - add myThid to seaice_budget_ocean/ice
671      - add new interface for atmospheric wind forcing (C-grid only)
672        + new routine
673        + two new field (taux, tauy for stress over ice)
674        + removed one global field (DAIRN) for C-grid case only
675    o pkg/thsise
676      - 2nd set of modifs for thsice adjoint in conjunction with exf
677    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
678    
679    checkpoint58y_post
680    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
681      vertical diffusivity, similar to that in MOM4; turned on using
682      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
683      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
684    o Added capability for 3D specification of background vertical diffusion
685      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
686      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
687      "data" file that contains the 3D vertical diffusivity coefficients.
688    o ice dynamics (pkg/seaice) with thsice thermodynamics:
689      - add code within pkg thsice to advect & diffuse sea-ice fields
690      similar to (and will replace) what has been added in  seaice_advdiff.F,
691      but: - conserving Mass, Heat & Salt.
692           - better when using non-linear advection scheme (not yet fully tested)
693           - can also be used in atmospheric set-up (for now, only the diffusion).
694    
695    checkpoint58x_post
696    o IO option for global-file compact format:
697      - add options when generating topology (utils/exch2/matlab-topology-generator)
698      - add I/O capability (pkg/mdsio).
699      - adapt utils/matlab/rdmds.m to read this format.
700      for now long-line format not yet supported by pkg/mdsio (& exch2).
701    o shelfice: add a few diagnostics
702    
703    checkpoint58w_post
704    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
705      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
706      (and replace horiVertRatio in NH code).
707      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
708                         and tutorial_plume_on_slope (sensitive to truncation)
709    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
710      directly to drive seaice model (C-grid only)
711    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
712     - reintroduce computation of wind from stress,
713     - compute tau (in exf_bulkformulae.F) from windstress averaged to
714       mass points to avoid tau = 0
715     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
716    o rdmnc.m: make it work with "global" files created with gluemnc
717    o rdmnc.m : some improvements in dealing with singleton dimension
718      (tested on all testreport mnc output files).
719    o genmake2: disable pkg/profiles if netcdf test fails.
720    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
721    o move call to cal_readparms up to make calendar parameters/variable available
722      to all packages
723    
724    checkpoint58v_post
725    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
726      useDynP_inEos_Zc tested.
727    o pkg/exf: changes to properly interpolate/mask/scale initial fields
728    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
729      and portions thereof.  See read_cs.txt for description and examples.
730    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
731      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
732      following the great-circle arc between those 2 points.
733    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
734      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
735    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
736     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
737     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
738     - still needs work (not working with some options ; efficiency to improve)
739       and serious testing.
740     - use this scheme for temperature & salinity in 2 advection test exp.:
741       advect_xy & advect_xz, respectively.
742    
743    checkpoint58u_post
744    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
745    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
746    o testreport: add option "-skipdir" to skip some test.
747    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
748      momentum calculation.
749    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
750    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
751      remove checkpoint.F and the_correction_step.F (no longer used);
752      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
753    o add option (linFSConserveTr) to correct for tracer source/sink due to
754      Linear Free surface
755    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
756    o pkg/thsice: fix reading mnc-pickups
757    
758    checkpoint58t_post
759    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
760    o pkg/mdsio:
761     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
762       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
763       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
764     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
765     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
766       either MDS_READ_FIELD or MDS_WRITE_FIELD )
767     - new S/R (to replace MDSWRITEMETA), which allows to write more
768       informations (variable names, time ...) to meta files.
769     - modify rdmds.m to give back the meta file content.
770    o pkg/diagnostics: change vertical interpolation to be safer, and more
771       flexible (define p-levels to interpolate to in data.diagnostics);
772      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
773       diagnostic pointer.
774    o pkg/seaice: more cleaning up of seaice_growth, added many comments
775    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
776    o fix multi-category seaice:
777     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
778       SEAICE_MULTICATEGORY
779     - fix short wave heat flux
780    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
781       and allow to use EVP solver. Change forward lab_sea: test both EVP
782       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
783    o Initial check-in of lab_sea adjoint
784      (very similar to natl_box_adjoint/code_seaice)
785      * used C-grid and EVP solver
786      * used KPP, GM/Redi
787      * uses inAdExact=.TRUE.
788      * gradient checks fail for both ADM and TLM
789        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
790        f.d. gradients actually seem more problematic than ADM, TLM gradients;
791        issue is related to forward mismatch between g77 an ifort
792    o pkg/seaice: overhaul of thermodynamics
793     - growth.F and groatb.F are replaced by new routine seaice_growth.F
794     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
795     - move a few global fields out of SEAICE.h into seaice_growth.F and
796       make them 2D (FICE/QNETO/ ...)
797     - remove FO (it is the same as QNETO)
798     - introduce a few local fields to avoid modifying external fields such
799       as atemp, etc.
800    
801    checkpoint58s_post
802    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
803      changed exf_set_gen.F so that
804        genperiod=0 means input file is one time-constant field and
805        genperiod=-12 means input file contains 12 monthly means
806    o CG2D: use pre-computed solver main-diagonal (stored in common block);
807      this affects truncation error ; generate new output file for exp. which
808      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
809        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
810        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
811        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
812        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
813        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
814    o start implementation of deep-atmosphere and anelastic formulation
815    o verification: remove 2nd copy of input files and use script "prepare_run"
816      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
817    o mom_common/vecinv/fluxform: fix a few initialisation isssues
818    o profiles: fix for multithreaded case
819    
820    o diagnostics: rename few diags:
821      s/'PRESSURE'/'RCENTER '/g
822      s/'TICE    '/'oceFreez'/g
823      s/'TAUX    '/'oceTAUX '/g
824      s/'TAUY    '/'oceTAUY '/g
825      s/'SWFLUX  '/'oceQsw  '/g
826      s/DIFx/DFxE/g
827      s/DIFy/DFyE/g
828      and add few ocean-forcing diagnostics:
829      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
830    o modifications to pkg/seaice/growth.F and budget.F, which change results of
831      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
832      as actual snow thickness.  It now refers everywhere to effective snow
833      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
834    
835    checkpoint58r_post
836    o modifications to pkg/seaice/growth.F, which change results of
837      lab_sea experiment: fixes pertain to melting snow over open water, to
838      masking EVAP under sea ice, and to using the correct AREA variable for
839      computations of EVAP, PRECIP, HSNOW, and GHEFF
840    o add ability to read bathy, salt, and theta using MNC (off by def)
841    o add flooding algorithm and advection of HSNOW for pkg/seaice;
842      both are turned off by default and do no change any results
843    o seaice advection with pkg/thsice: a step toward the use of non-linear
844      advection scheme, but #ifdef or commented out for now (requires more EXCH).
845    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
846      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
847      in natl_box (affects results @ truncation level: update output.txt)
848    o multi-threading and IO:
849      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
850      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
851        (needed to work with SingleCpuIO): tested in all verif. exp.
852    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
853      affects the results (but none of the verification test uses this scheme).
854    o Adding some pkg/diagnostics capability to pkg/seaice
855      (will certainly be subject to changes)
856    o ctrl: adding new control variables:
857      lwflux, lwdown, evap, snowprecip, apressure, runoff
858    
859    checkpoint58q_post
860    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
861      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
862      high_res_cube configuration by 4% on Columbia.
863    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
864      add (in global_with_exf/code) a version of EXF_INTERP_READ without
865      dynamical allocation (seems to work in multi-threaded).
866    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
867      single CPU io) so that TAF does not have to see EESUPPORT.h
868    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
869    
870    checkpoint58p_post
871    o obcs: stop if obcs is used with useCDscheme = .true.
872    o shelfice:
873     - fix a sign error so that no slip at shelfice interface works
874     - remove stop for combination non-hydrostatic code and shelfice. That does
875       not mean, that the results are correct, but at least they are numerically
876       stable
877    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
878    o added adjoint exch routined for all exch*3d* routines
879      and updated flow directives
880    
881    checkpoint58o_post
882    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
883      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
884    o change controling S/R for writing pickup file (new S/R do_write_pickup)
885      and clean-up reading/writing of pickup files.
886    o fix local version of read/write pickup (NH part) in rotating_tank/code
887    o simplify EXCH interface:
888     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
889     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
890    o added the regrid package
891    o shelfice:
892     - add a simple boundary layer scheme to reduce noise
893     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
894    
895    checkpoint58n_post
896    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
897       local variable (not in common block).
898    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
899      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
900      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
901        to work with SingleCpuIO.
902    o add "_d 0" to real constant of pkg/cfc subroutines ;
903       update exp. cfc_exemple & tutorial_cfc_offline output files.
904    o multi-threading and IO:
905      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
906        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
907      - barrier before and after reading.
908      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
909      - avoid using MDS_WRITELOCAL for LAND pkg output.
910      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
911        common-block variables ; Allows multi-threading with master-thread IO.
912    o change default MAX_NO_THREADS from 32 to 4 ;
913      and stop cleanly when MAX_NO_THREADS is too small.
914    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
915    
916    checkpoint58m_post
917    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
918       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
919    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
920       keep global_ocean.90x40x15 (for AD testing) with former secondary test
921       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
922    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
923        add MITgcm_tutorials (= code + all the tutorials)
924    o ecco, option to compute cost for total ssh (mean+anom)
925    o consistent with addition of ptracer and ssh in pkg/profiles
926    o profiles: adding ptracer and ssh
927    o testreport: change multi-test output-file name
928      (from output.txt.{name} to output.{name}.txt)
929    o profiles: now ok for mutli-tiles case
930    o seaice: add 4 parameters for different advection schemes for area,
931      (effective) seaice thickness, enthalphy, and snow height. Their default
932      is the standard parameter SEAICEadvScheme
933    o calc_gw:
934     - add cosFacU in zonal viscous flux (harmonic.visc.).
935     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
936       of tutorial_plume_on_slope.
937    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
938    o calc_gw: true flux-form, account for horizontal grid spacing.
939      update rotating_tank results, but not plume_on_slope (affected at
940      truncation level, 11 digits).
941    
942    checkpoint58l_post
943    o calc_gw:
944     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
945     - remove side-drag for now (need to fix it); update plume_on_slope results.
946     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
947    o commit code to make SST/SSS weights spatially variable
948      (based on either variable in-situ or variable initial T/S weights)
949    o pkg/ecco:
950      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
951        now based on horizontally varying weights wthetaLev, wsaltLev
952      * cost_averagesflags now returns year indices in addition to day, month
953      * sflux balance is performed on annual basis
954        (sflxumm, sfluxmm2, bal_sfluxmm)
955      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
956        including separate counting and multipliers
957    o pkg/rbcs
958      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
959    
960    checkpoint58k_post
961    o testreport:
962     - always build in dir. "build" (if not there, mkdir build instead of building
963       & running in input)
964     - run in dir run (if it exists), in build otherwise.
965     - call prepare_run (if input/prepare_run exists)
966     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
967    o pkg/exf modifications to interpolation and rotation routines for more
968       reasonable treatment of North Pole singularity: for tracers North Pole
969       value is set to northernmost zonal-mean value, for zonal velocity it is
970       set to zero, and for meridional velocity it is set to northernmost value.
971    o pkg/exf/exf_check_range.F
972     - add tile index to diagnostics and move stop statement to the very
973       end of the routine.
974    o pkg/diagnostics: (diagnostics_main_init.F)
975      define title of isomorphic variables according to the current config.
976    o pkg/thsice with pkg/seaice dynamics:
977    - fix domain of computation (interior only, required for exf) and do exchanges
978    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
979    o towards a standard way of dealing with multi-threading in MONITOR
980      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
981    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
982       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
983    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
984    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
985    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
986       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
987    o tracer advection:
988     - clean-up and simplify calc_common_factors.F
989     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
990       advection subroutine (but still not used within DST advection S/R)
991    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
992    
993    checkpoint58j_post
994    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
995      from file (collects calls previously in FORWARD_STEP)
996    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
997    o adjoint store dir. adjusted accordingly
998    o genmake2
999      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1000    
1001    checkpoint58i_post
1002    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1003      on wind stress (SEAICEstressFactor defaults to 1.)
1004    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1005      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1006    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1007      on CS-grid: no longer loosing mass.
1008    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1009    o pkg/ggl90: fix sloppy output and fix a bug
1010    o pkg/seaice: added SEAICEuseEVPpickup parameter
1011      - Set to false in order to start EVP solver with
1012        non-EVP pickup files when using SEAICEuseEVP
1013      - fix sign error in diffusion in seaice_calc_rhs
1014    
1015    checkpoint58h_post
1016    * Modifications for bottom topography control
1017      o replace hFacC by _hFacC at various places
1018      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1019      o add non-self-adjoint cg2d_nsa
1020      o update autodiff support routines
1021      o re-initialise hfac after ctrl_depth_ini
1022      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1023    * Adding verification for 5x5 box (4-layer) bottom topography control
1024    
1025    checkpoint58g_post
1026    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1027       used for mean seasonal cycle, mean diurnal cycle); add an example
1028       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1029    o pkg/ggl90:
1030      - add parameter (minimum surface kinetic energy)
1031      - fix bug (avoiding division by zero)
1032    o couple pkg/thsice to pkg/seaice:
1033      - modify advection in seaice to accomodate new scalar fields to be advected
1034      - only muliDimAdection scheme work with seaice/thsice
1035      - mapping of thsice-variables to seaice-variables, back and forth
1036      - does not break the verification experiments, but does not give the
1037        desired results either
1038    o pkg/seaice
1039      - make (default) second order advection a bit less confusing?
1040    
1041    checkpoint58f_post
1042    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1043      to pkg/seaice):
1044      - new routines thsice_map_exf and thsice_get_exf provide the interface
1045      - add an additional formal parameter to thsice_solve4temp
1046    o pkg/exf:
1047      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1048      - correct Stefan-Boltzmann constant
1049      - new parameter for longwave surface emittance
1050      - separate some stuff from exf_bulkformulae into new routines  
1051        exf_radiation, exf_wind
1052      - add new parameters and constants: longwave emissivity for ocean, ice
1053        and snow, evaporation parameters over ice
1054      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1055        either wind from stress or stress from wind
1056    o pkg/thSIce:
1057    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1058    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1059       and THSICE_CALC_THICKN
1060    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1061    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1062      to make debugging easier.
1063    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1064    o pkg/bulk_force:
1065      - clean-up comments and parameters ;
1066      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1067    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1068      generate new output for test-experiment: aim.5l_cs.thSI
1069    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1070      testreport accordingly
1071    
1072    checkpoint58e_post
1073    o SEAICE_CGRID adjoint done
1074    o R_STAR adjoint implemented.
1075      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1076      * need to sort out init. of h0facc, etc.
1077    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1078      to be able to use it in pure forward.
1079    
1080    checkpoint58d_post
1081    o upgrade simple test-experiment to tutorial example:
1082     step.1: duplicate the experiment and (step.2) will remove the old copy.
1083      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1084      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1085      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1086      tutorial_global_oce_biogeo    <- copy of dic_example
1087      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1088      tutorial_plume_on_slope       <- copy of plume_on_slope
1089      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1090      tutorial_global_oce_optim     <- empty for now (David ?)
1091      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1092     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1093    o correct a sign problem in cost_scat.F
1094    o obcs and ptracers: fix boundary conditions for advections schemes
1095      with larger stencil
1096    o thsice adjoint: start
1097    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1098      completeness
1099    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1100      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1101    o ptracers adjoint:
1102      * avoid extensive recomputatations
1103      * fix missing re-init. of gptr (missed by TAF)
1104    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1105      me to turn off the excessive output to STDOUT that this package produces
1106    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1107      and add those terms in Vector-Invariant formulation.
1108    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1109      if the control period (xx_hfluxperiod etc) is 0
1110    o in profiles pkg, clean routines and fix details
1111    o in ecco pkg, reading ssh data:
1112      fix problem in case the model does not start at iter0=0
1113    o fix mnc-pickup/restart for ptracers
1114    o new package prifiles:
1115      code to compute profile-based cost by Gael Forget
1116      (modifs in ecco, ctrl, autodiff)
1117    o Benign bug fix in initialization (spotted by M. Mazloff) of
1118      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1119    
1120    checkpoint58c_post
1121    o adjoint: finish NLFS adjoint and provide reference output in
1122      verification/global_ocean.90x40x15/results_ad_nlfs
1123    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1124      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1125      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1126      with SEAICE_CGRID defined.
1127    o move calendarDumps from "data" to "data.cal" and clean-up the code
1128      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1129    o add useEXF & useCAL flags (for now, set in hard-coded way)
1130    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1131      (were missing in NH mode, and wrong in quasihydrostatic mode).
1132      waiting for Chris updated version of calc_gw to add those CALLs.
1133    o fix bug in quasihydrostatic S/R ;
1134      add a test for this option: global_ocean.90x40x15.qshyd
1135    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1136      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1137    o add on/off flag useOffLine for package OFFLINE
1138    o seaice:
1139      - modify advection so that it works also on the C-grid
1140      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1141        problem in multi-tile runs with C-grid
1142      - add flags for clipping ice velocities and/or masking solver forcing
1143      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1144        C-grid solver
1145      - added a few comments to seaice_diffusion.F
1146      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1147        are now exclusive)
1148      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1149        required re-ordering the code a little:
1150       + make DAIRN global variable (defined in SEAICE)
1151       + move computation of the viscosities eta and zeta into a new separate
1152         routine (because I need to recompute them in seaice_ocean_stress.F)
1153    
1154    checkpoint58b_post
1155    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1156      update output.txt of exp. aim.5l_cs.thSI
1157    o various mnc cleanups and improvements:
1158      + shrink lookup tables by factor of ~4
1159      + better error reporting when running out of lookup space
1160      + able to handle longer path/file names (up to 500 chars)
1161    o adjoint:
1162      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1163      - TBD: "hidden" mom_vecinv recomp. in dynamics
1164    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1165     (allow to differentiate between forcing components using new integer flags:
1166      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1167     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1168    o ecco
1169      - enable trend removal from SSH anomaly obs.
1170    o adjoint
1171      - a fix for PmEpR when #undef EXACT_CONSERV
1172      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1173      - try to fix "hidden" recomp. in forward_step for NLFS
1174        (NLFS seems broken sometimes after I checked it in)
1175    o seaice:
1176     - add c-grid version of the dynamic solver:
1177       + three new routines that are the c-grid substitute lsr, dynsolver
1178         and ostres
1179       + put a few fields that were local to dynsolver into global common
1180         blocks, so that I can move the computation of stresses etc into
1181         seaice_lsr (saves coding but may break the adjoint).
1182     - replace more hardwired parameters by runtime parameters
1183     - add ice masks that mask the rhs of the implicit solvers where there
1184       is no ice (commented out in seaice_dynsolver, because i am not sure
1185       if this works properly), eventually this should replace the clipping
1186       of ice velocities in seaice_dynsolver to +/-40cm/s.
1187    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1188      include it only where its needed
1189    o move balancing of fluxes before the call of external_forcing_surf
1190    o seaice:
1191      - correct units of turning angles (now they are really in degrees)
1192      - move computation of GWATX/Y out of main routine into dynsolver
1193      - initialize GWATX/Y in seaice_init
1194    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1195      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1196    o seaice: add runtime flags for turning angles (default to zero)
1197    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1198      and trend from exf forcing and ctrl control adjustments
1199    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1200      (since checkpoint57x_post)
1201    o change the default rotation period to 86164.s = the Earth rotation
1202    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1203      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1204    o seaice advection: add code for choosing between the default (2nd order
1205      central differences) and multiDim advection schemes provided by
1206      pkg/generic_advdiff
1207    o seaice:
1208      - removed all references to SEAICE_GRID.h fields from
1209        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1210        (cubed-sphere configuration will change a little)
1211      - grid computations in seaice_init are obsolete now.
1212      - cleaned up code a little so that is easier to read (hopefully).
1213      - added new (better?) discretizations of default advection and diffusion
1214        (turn on with SEAICEuseFluxForm)
1215      - replace 1 in 3d global fields by kSurface in growth.F
1216      
1217    checkpoint58a_post
1218    o seaice:
1219      - bug fix in advect.F
1220    o shelfice:
1221      - separate shelfice load anomaly from pload (breaks with time
1222        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1223        Its default is 0., but it may be computed more cleverly from (unknown)
1224        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1225        done offline. A good approximation of the pressure load anomaly is
1226        necessary to avoid large initial adjustment processes underneath
1227        deep-reaching shelfice.
1228      - small fix in ISOMIP shelfice_thermodynamics
1229      - add more sophisticated thermodynamics of Hellmer (1989), this is
1230        now the default
1231      - give a few constants more intuitive names
1232    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1233      if bulk formulae are used in long integration (especially EmPmR). Turn
1234      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1235      if balancePrintMean, the imbalance that is substracted is printed to
1236      STDOUT.
1237    o fix bug (typo) in obcs_apply_eta.F
1238    o add a new package shelfice which enables us to model the circulation
1239      underneath shelf-ice with draughts of hundreds of meters.
1240     - works
1241     - to do: + include improved thermodynamics
1242              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1243                instead of new field kTopC
1244              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1245                instead of new field R_shelfIce and new code in ini_depth.F
1246                and ini_mask_etc.F?
1247              + adjust vertical mixing schemes?
1248    o seaice pkg:
1249     - add a cpp-flag to include a simple formula for a salinity dependent
1250       freezing point of sea water at the surface
1251     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1252       meridional stresses are now different (and hopefully correct)
1253    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1254       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1255       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1256    o pkg/diagnostics: add options and parameters for regional-statistics
1257       diagnostics ; define regions by reading a region-mask from a file
1258       (might add other options later)
1259    o pkg/bulk_force:
1260     - add option and parameters to use AIM surface-flux formulae.
1261     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1262       others forcing fields (defined in PARM05, parameter file "data") are loaded
1263       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1264     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1265     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1266     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1267       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1268     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1269    
1270    checkpoint58
1271    o add "--embed-source" option to genmake2 which, when the supporting
1272      tools can be compiled (as determined by genmake2) will turn on the
1273      embed_files package which then embeds the entire MITgcm source code
1274      (*.[fFhc] + Makefile) used for the build within the executable
1275      - requested by CNH but off by default
1276      - adds a paltry <9MB to the mitgcmuv executable in most cases
1277      - only writes the output when useEMBEDSRC in eedata is true
1278    o clean up 3-dim. relaxation codes:
1279      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1280      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1281      * Thanks to Tom Haine for testing!
1282    
1283    checkpoint57z_post
1284    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1285      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1286    o fix the pickup behavior for obcs in combination with ptracers
1287    o fix a bug in ptracers_external_fields_load
1288    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1289      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1290    o transfered surface NH pressure to eta field (if exactConserv).
1291    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1292         and update lab_sea output.txt file.
1293    o completing 3-dim. relaxation code: additional term
1294         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1295      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1296      * At compile time, in "EXF_OPTIONS.h" set
1297          #define  ALLOW_CLIMTEMP_RELAXATION
1298          #define  ALLOW_CLIMSALT_RELAXATION
1299      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1300          tauThetaClimRelax3Dim = 15552000.0,
1301          tauSaltClimRelax3Dim  = 15552000.0,
1302      * 3 cases:
1303          1) Use a constant-in-time 3-dim. field
1304          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1305          3) Real-time relax. to time-evolving prescribed field
1306    o Adding Laplacian-type smoothness constraint on
1307      initial and boundary (forcing) controls (ic, bc)
1308      * enable at compile-time via
1309        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1310      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1311      * Absolute scale somewhat unclear so far
1312      * no area weighting was included since no other cost term does so far
1313    
1314    checkpoint57y_post
1315    First step for a NLFS adjoint
1316    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1317    o new init. routines for calc_r_star, calc_surf_dr
1318    o still need to deal with ini_masks_etc
1319    o testreport seemed happy
1320    checkpoint57y_pre
1321    
1322    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1323    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1324    o add new offset feature to offline pkg (plus minor cleanup)
1325    o cfc fixes for final year of integration
1326    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1327      be in GCHEM_OPTIONS).
1328    
1329    checkpoint57x_post
1330    o fix testreport Pb in multiple test experiment.
1331    o cleanup our namelist syntax in verification:
1332      - make it more F95 standards compliant (some work still needed)
1333      - allows the vast majority of our tests to work with gfortran
1334    o Non-Hydrostatic:
1335     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1336     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1337    o Allow to apply AB on T,S rather than on AB(gT,gS):
1338     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1339     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1340       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1341     - need a "clever" read_pickup to restart from the other AB formulation
1342    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1343    o remove some unused variables (reduces number of compiler warnings)
1344    o adjoint
1345      * Disable useVariableViscosity for adjoint for time being
1346        (there are a number of extensive recomputations)
1347      * Initialize certain variables needed for adjoint
1348    
1349    checkpoint57w_post
1350    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1351                 fix the singleCpuIO RS version of MDSWRITEFIELD
1352       and add a WARNING if using globalFiles=T with multi-processors.
1353    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1354      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1355    o tracer advection scheme:
1356      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1357       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1358       was not very convenient).
1359      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1360       (further tests needed for the implicit DST & Flux-Limiter schemes).
1361    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1362      and sRef for convenience, handy, when you want to initialize
1363      ptracers in a large domain with a constant non-zero value. Also,
1364      untangle ptracers_init.F a little.
1365    
1366    checkpoint57v_post
1367    o change dome exp. to use variable viscosity in side-drag terms.
1368    o remove all the files from the cfc_offline test since they are now
1369      incorporated into tutorial_cfc_offline which has been producing
1370      identical results for a few days of testing
1371    o add new parameter: sideDragFactor to enable half-slip-side BC
1372      and change side-drag S/R to use viscosity from mom_calc_visc
1373      (can switch back by setting sideDragFactor=0.); affects results at
1374      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1375       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1376    o vorticity & strain are now computed without masking, to account for
1377      no-slip-side BC in variable viscosity calculation ; mask is applied
1378      anyway later on, before computing advection/coriolis terms.
1379    o modify exp4 to test new obcs support for reading from external files
1380      and for passive tracers
1381    o fix behavior of ptracers_monitor when monitor output is written to a
1382      netcdf-file; still not independent of monitor.F (writes in the same
1383      file).
1384    o change default value of tRef (put a uniform, meaningful value for ocean
1385      & atmos) and initialize sRef (was missing, as Martin mentioned).
1386    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1387      to be proportional to enstrophy dissipation length.  Thus,
1388       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1389      This is now consistent with Smagorinsky and with the manual.
1390    
1391    checkpoint57u_post
1392    o OBCS and PTRACERS: add open boundary support for passive tracers
1393      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1394        OB-values from file; this is not different from the way theta and salinity
1395        are treated
1396      - however, Orlanski-radiation conditions are not supported, and the model
1397        will stop if you use pTracers and Orlanski at the same time.
1398      - beefed up the rountine obcs_external_fields_load: now only those open
1399        boundary values are overwritten with values from files for which there
1400        are really files, otherwise the OB-fields remain untouched. This makes
1401        it possible to use different OBs at different ends of the domain (as
1402        with EXF)
1403    o reduce number of exch calls in shap_filt (s2).
1404    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1405      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1406    
1407    checkpoint57t_post
1408    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1409    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1410      same truncation, independent of the face number: affects affects several
1411      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1412    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1413      note that biharmonic viscosity + no-slip was not tested in any experiment.
1414    o fix bug in non-linear free-surf side-drag ; generate new output for
1415      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1416    o make mnc honor the writeBinaryPrec flag for most kinds of output
1417    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1418    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1419      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1420    o add brackets in multi-terms sum to get same truncation, independent of
1421      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1422      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1423    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1424      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1425      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1426      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1427      Suggested values of viscosity parameters found in mom_calc_visc.
1428      Many new viscosity diagnostics available.
1429    
1430    checkpoint57s_post
1431    o Add clearing-house for viscosity calculations, mom_calc_visc and
1432      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1433      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1434      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1435      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1436      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1437      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1438      ViscAhStrain and viscAhTension are now retired.
1439    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1440    o In response to JMC's bug report, genmake2 now ignores any soft-links
1441      that it finds in the *current* directory when searching for files.
1442      Soft-links found in any other source directories will still work as
1443      they did before.
1444    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1445      a C routine to unlimit the stack size
1446    o mnc-ify pkg/aim snapshot vars
1447    o mnc-ify pkg/land as requested by Daniel
1448    o various changes to mnc including:
1449      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1450      - output can now be grouped so that all files within a group
1451          change the ITER portion of their names in lock-step together
1452      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1453          and works with both EXCH1 and EXCH2 (but needs more testing)
1454      - writing works for all verification test cases w/ g77 on Linux
1455    
1456    checkpoint57r_post
1457    o make MNC variable initialization happen earlier
1458    o add diagnostics for (almost) each term of the momentum Eq.
1459    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1460    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1461    o remove MINIMAL_TAVE_OUTPUT option ;
1462      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1463    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1464      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1465    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1466    o add time-dependent SST, SSS control
1467    o cost terms in ecco/ modularized (new cost_generic.F)
1468    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1469    o new infrastructure for seaice model vs. obs misfits in seaice/
1470      * driver from the_main_loop.F is seaice_cost_driver.F
1471      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1472      * gradient check in Exp. 6a of natl_box_adjoint/
1473    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1474      (see README file)
1475    
1476    checkpoint57q_post
1477    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1478    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1479      - bug was reported by Jean-Michel and Ian Fenty
1480    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1481      update exp. cpl_aim+ocn output.
1482    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1483      Needed for high-res. runs with large global files
1484      to be able to limit tapelev size
1485    o Changed some tests for adjoint:
1486      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1487      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1488      * global_ocean.90x40x15/ back to default 3-level checkpointing
1489    o Modifications to enable scripted COMMON to MODULE conversion
1490      * verification/OpenAD/code/ has necessary scripts and description;
1491      * converts, compiles and runs successfully;
1492    
1493    checkpoint57p_post
1494    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1495    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1496      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1497    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1498    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1499      (was already the case for dissipation with mom_vecinv,
1500       and also the case for grad.PhiHyd when staggered-timeStep)
1501      This will allow to put dissipation out-off the AB time-stepping.
1502     Unfortunately, affects truncation error. Update output of exp. that "fails"
1503      (cg2d matching number) and leave the others for later: front_relax(10),
1504      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1505      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1506    
1507    checkpoint57o_post
1508    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1509      (2) its ready to be documented during the 20050801 DocFest
1510    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1511      for ideal_2D_oce and lab_sea on linux_ia32_g77
1512    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1513      in global1x1_tot/code_seaice_adj to access indices 32, 33
1514      (worth another tag)
1515    
1516    checkpoint57n_post
1517    o adding precip control xx_precip 32
1518    o adding swflux control xx_swflux 33
1519    o Replacing 10 forcing penalty cost routines by 1 generic.
1520    o Implementing partitioning in time-mean and variable adjustment
1521      for atmos. state.
1522    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1523    o in natl_box_adjoint:
1524      * updated exp 1 to 10
1525        (but does not have time-mean vs. variable split results yet)
1526    o updated global1x1/*_seaice_adj/
1527      to incorporate latest changes
1528    o enable useSingleCpuIO for mdsio vector routines
1529      (applies in particular to tapelev I/O)
1530    o removed inefficient K-loop in all active_file*control*.F
1531    
1532    checkpoint57m_post
1533    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1534      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1535    o pkg/exch2: filling of face-corner halo regions is optional
1536      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1537    
1538    checkpoint57l_post
1539     tag before updating tutorials (pre-release-2)
1540    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1541       for output and interpolation of input fields onto model grid)
1542    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1543       Affects results of exp. rotating_tank ; update output.txt.
1544    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1545          and taking the square quantity and/or using a fraction-weight field.
1546    o fix aim_diagnostics_init.F mate numbers.
1547    o add mnc output capability to diagnostics/diagstat and update
1548      our cvsignore files for the ACSII output generated
1549    
1550    checkpoint57k_post
1551    o lab_sea now uses diagnostics package and provides a suite of
1552      new EXF diagnostics output.
1553    
1554    checkpoint57j_post
1555    o exf
1556      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1557        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1558        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1559      * extended diagnostics output
1560        - now includes all EXF variables
1561        - hs, hl moved to common block
1562        - separate S/R for diagnostics, called after ctrl vector is added
1563        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1564        - EXFqnet contains true Qnet (i.e. includes qsw)
1565      * updated verif. lab_sea, global_with_exf
1566      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1567        to ensure that diagnostics sees a true EXFqnet
1568    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1569    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1570      several times with different frequencies.
1571    o mnc-ify the thsice package as requested by Daniel Enderton
1572      - the monitor--MNC output needs work
1573      - many attributes need to be added (most are currently blank)
1574    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1575      - many attributes need to be added (most are currently blank)
1576    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1577    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1578    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1579      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1580         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1581    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1582     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1583    
1584    checkpoint57i_post
1585    o Diagnostics package was changed: diagnostic allocation is now deactivated
1586      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1587    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1588      add 1rst Order upwind vertical Shear.
1589    o add a quick fix for A/B checkpointing in OFFLINE mode
1590    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1591      end-run around the C/Fortran linking horror in eesup/src/timers.F
1592    o added pkg/runclock: allows user to terminate run based on wall clock
1593    o added non-hydrostatic scaling parameter: nh_am2
1594    o pkg/my82: futile attempt to make results compiler-independent by adding
1595      some "_d 0", etc. no effect.
1596    o for mnc output, fill the 'T' coordinate var with myTime and create a
1597      separate 'iter' variable for iteration count
1598    o pkg/diagnostics:
1599      add new capability: output of Global/Regional & per-level statistics ;
1600      tested against monitor output (including land & thSIce) on various exp.
1601    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1602    
1603    checkpoint57h_done
1604      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1605      data.diagnostics, data.gchem, data.ptracers) is done.
1606    
1607    o pkg/diagnostics: prepare for Global/Regional statistics.
1608      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1609    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1610      and rename it: DIFFERENT_MULTIPLE
1611    
1612    checkpoint57h_post
1613    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1614    o pkg/diagnostics: change output frequency, now in seconds (instead
1615      of Nb of iterations). This requires to change data.diagnostics.
1616    checkpoint57h_pre
1617    
1618    o in mnc, let the user create the output dir if both mnc_outdir_date
1619      and mnc_outdir_num are false
1620    o add fflags() to pkg/diagnostics which allows one to specify, on a
1621      per-file basis, the file precision [default behavior is unchanged]
1622    o added diagnostics to pkg/kpp, including computation of mixed layer
1623      depth based on a temperature/density criterion
1624    o updated verification/natl_box to test the new pkg/kpp diagnostics
1625    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1626    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1627    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1628      not mnc -- this mistake was found by JMC and is now corrected
1629    
1630    checkpoint57g_post
1631    o add Adams-Bashforth 3rd Order time stepping:
1632      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1633      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1634    checkpoint57g_pre
1635    
1636    o make lambda[Theta,Salt]ClimRelax spatially varying
1637      (default remains spatially uniform constant based on tau)
1638    o added new control variables
1639      * init. uVel, vVel, etanN
1640      * lambda[Theta,Salt]ClimRelax
1641    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1642      (suggested by G. Forget)
1643    
1644    checkpoint57f_post
1645    o add parameter "baseTime" = model base time = time at iteration zero
1646      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1647      account for baseTime shift
1648    o move Coriolis arrays from PARAMS.h to GRID.h
1649    checkpoint57f_pre
1650    
1651    o mnc-ifying the seaice package
1652    o introduced an alternative length scale calculation for use in the limiting
1653      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1654    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1655    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1656      as well as grad(vort3).  Made it compatible with both approximate form
1657      for the cubed sphere and full form of these gradients.  Added flag
1658      useFullLeith to select between approximate and full form.  
1659    o add "d0" in getcon.F to reduce differences between compilers/platforms
1660      update output.txt of exp. fizhi-gridalt-hs
1661    o change port_rand funtion to allow to set the seed.
1662    o fix obscure MNC bug involving conversion between reals and integers
1663      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1664        new version is now more standards-compliant
1665    o adjoint-related modifications
1666      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1667      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1668      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1669    
1670    checkpoint57e_post
1671    o Adding eddy stress controls a la Ferreira et al.
1672    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1673    
1674    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1675      update output.txt of exp. fizhi-gridalt-hs
1676    o add more "Z" dimensions and associated coordinate vars to MNC
1677    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1678    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1679      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1680      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1681      months and years.  Requires pkg/cal.
1682    o diagnostics: add pickup functionality
1683      - off by default for backwards compatibility
1684      - current version only uses MDSIO -- MNC will be added
1685    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1686    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1687    
1688    checkpoint57d_post
1689    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1690    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1691      output from the diagnostics package
1692    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1693    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1694      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1695    o add coordinate variables to the MNC output from the diagnostics package
1696    o change MNC-flags default value: true when useMNC=TRUE
1697    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1698      the ability (off by default) to read the grid information using MNC
1699    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1700    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1701    o do snap-shot diagnostics at the middle of the time-interval (instead of
1702      at the end).
1703    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1704      new test for AIM with thSIce + slab-ocean
1705    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1706    o move state variable diagnostics to the beginning of the time step ;
1707      (note: still needs some work specially for snap-shot diagnostics)
1708      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1709    
1710    checkpoint57c_post
1711    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1712    o generate new output.txt files on faulks with g77 & the new -ieee option
1713    checkpoint57c_pre
1714    
1715    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1716      update output.txt of exp. global_ocean.90x40x15
1717    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1718      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1719    o add saltFlux(+File) forcing capability with periodicExternalForcing
1720    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1721    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1722    o improvements for the MNC output from DIAGNOSTICS:
1723      - correct handling of the unlimitied dimension
1724      - all dims now have associated coordinate variables
1725      - variables located at U, V, and Corner ("Z") points are now written
1726        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1727        *all* data points are output
1728    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1729    o added pkg/seaice/seaice_monitor.F
1730    o mdsio_readfield.F can now read files visible only to master MPI process.
1731    o pkg/seaice: some test code for ice-modified ocean stress
1732    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1733      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1734      spurious negative numbers for precipitation and humidity.  Will cause
1735      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1736    o pkg/ctrl/
1737      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1738        May be enabled via doPackDiag
1739      *  introduce z-scaling of
1740         + gradient (doZscalePack) and
1741         + control (doZscaleUnpack)
1742    o pkg/mdsio/
1743      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1744      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1745    
1746    checkpoint57b_post
1747    o simplify options in diagnostics_fill arguments (remove weird combinations)
1748    o fix MNC coordinate variables so that they now contain per-face index
1749      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1750      general, EXCH2 grids are only aligned to a "local" coordinate system
1751    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1752    o Implement instantaneous output within pkg diagnostics:
1753      setting a negative frequency in data.diagnostics produces
1754     "snap-shot" output (as opposed to time-average if freq > 0)
1755    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1756      NOTE: change ptracer diagnostics name: use 2 characters to work with
1757            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1758    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1759      becomes the coordinate variable for the 'T' dimension
1760    o add CF-style coordinate variables to MNC
1761      - just a first cut:  numbers are meaningless on the cubesphere and
1762        missing along the T axis but otherwise it works!
1763    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1764    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1765    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1766      this is based directly on what the model compute, so that the content of
1767      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1768    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1769    o clean up build options files for SunOS, in particular
1770      - remove -traditional from xmakedepend
1771      - change -xarch=v9 to -xarch=native for f77
1772      - restore use of make (not gmake)
1773      - add CC=gcc if using g77
1774    o changes per discussion of AM, JMC, & EH3 today:
1775      - move redundant "grid" variables out of "state" -- in preparation of
1776        creating proper CF-style coordinate variables and in recognition
1777        that any/all grid variables can be easily copied (eg. w/NCO) from
1778        the grid files into any of the other NetCDF files
1779      - *always* output grid variables with MDSIO (this will eventually be
1780        changed)
1781      - output MNC grid file if useMNC is true
1782    o every instance of _END_MASTER() has been found and replaced with
1783      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1784      preprocessors
1785    o re-arrange diagnostics pkg initialisation:
1786     - allow each package to extend the available diagnostics list
1787     - add some checking and fix small problems (multi-threaded, ...)
1788     - new S/R diagnostics_fill (replace fill_diagnostics):
1789       look through the short list of active diag. (instead of the long list)
1790       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1791    
1792    checkpoint57a_post
1793    o this set of changes restores TAMC compatibility
1794      tested for global_ocean.90x40x15 adjoint on trough
1795      (what a pain)
1796    
1797    checkpoint57a_pre
1798    o some modifs in tools/build_options for sunos
1799    o call ctrl_pack for ctrl at end for optimcycle=0
1800    
1801    checkpoint57
1802    o add horizontal bi-harmonic viscosity for vertical velocity
1803      - new parameter viscA4W (defaults to viscA4)
1804      - affects only non-hydrostatic code
1805      - to be done: no-slip lateral boundary conditions
1806    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1807    o implement Implicit Vertical advection for pTracers
1808    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1809      (implemented also for implicit vertical diffusion & advection)
1810    o OBCS: extend application of tracer open boundary conditions
1811      to a strip beyond the boundary of width Olx/Oly
1812    o add call monitor to TAF set of required calls (flow directives)
1813      and include in natl_box_adjoint
1814    o untangle a few ifdefs related to cost, ctrl, autodiff
1815      untangel a few ALLOW_ECCO_OPTIMIZATION
1816    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1817      (theta2, salt2 in ecco_cost_weights)
1818    
1819    checkpoint56c_post
1820    o OBCS as control variables
1821      - update ctrl_ad_diff.list, obcs_ad_diff.list
1822      - remove balance of obcs controls from default
1823      - fix index bug nobcs in ctrl_init
1824      - fix dummy fields filen in ctrl_pack
1825      - add dummy weights for obcs
1826    o lsopt: comment out fort.94 output
1827    o optim:
1828      - remove unnecessary header files
1829      - adjusted namelists
1830      - add xerbla.F to Makefile
1831    o exf:
1832      - multiple modifications of exf_check_range
1833      - unit change in exf_init_runoff from [m/year] to [m/s]
1834    o mdsio:
1835      - i/o-vector change debugLevel from debLevA to debLevB
1836    
1837    checkpoint56b_post
1838    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1839      is called from DO_THE_MODEL_IO
1840      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1841      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1842      - clean up PTRACERS_WRITE_TIMEAVE a little
1843    o add another verification experiment that tests both the cfc-pkg and
1844      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1845      reactive tendencies treated inline with regular timestepping
1846    o testreport previously did a lousy job of comparing small numbers, so
1847      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1848      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1849      testreport.
1850    o ptracers_monitor: bug fix for MPI
1851    
1852    checkpoint56a_post
1853    o GCHEM: finish reorganizating the package
1854      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1855        (introduces another 3D-array for each passive tracer, but only if
1856        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1857        gchemTendency is not needed because the timestep is done separately)
1858      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1859      - GCHEM is now---more or less cleanly---separate from PTRACERS
1860      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1861        so clear to me how that should be done in a general way.
1862    o CFC: improve formatting of output in CFC_ATMOS
1863    o PTRACERS:
1864      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1865        that ALL experiments with ptracers enable can be checked. This makes
1866        GCHEM_MONITOR obsolete.
1867      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1868        monitorFreq
1869      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1870    o add PTRACERS (PTR0[1-5]) to testreport output
1871    o exf_check_range:
1872      * default changed to .TRUE.
1873      * will check values for niter0 if debLevA, every timestep if debLevB
1874      * STOP in exf_check_range if 'out of range'
1875      * range chosen generous to allow for potential extema
1876      TBD: a version with stricter range
1877           permitted range would be runtime parameters
1878    o GMredi:
1879      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1880      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1881      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1882    o GCHEM:
1883      - move call to GCHEM_FORCING_SEP, so that it is now called before
1884        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1885      - introduced a useGCHEM runtime flag and applied it everywhere.
1886      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1887        this flag is now only visible within GCHEM-pkg routines.
1888      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1889        be replaced by a 3D array that is computed before thermodynamics; for
1890        this, the tracer ID iTracer had to be included into the parameter list
1891        of ptracers_forcing
1892      - set up forward_step to call gchem_forcing, that will replace
1893        gchem_forcing_int in ptracers_forcing
1894      - cleaning up
1895    o small cleaning of exch2: remove files that are also in eesupp/src
1896    
1897    checkpoint56
1898    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1899    o mnc: cleanup "full" files--fixes out-of-memory problem
1900    o ECCO-GODAE
1901      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1902      * fully merged and updated from SIO code
1903        windstress sign change affects
1904        - exf_inscal_[u/v]stress
1905        - sign of xx_tau[u/v] adjustments
1906        - signs in cost_scat
1907      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1908      * natl_box_adjoint updated and compressed
1909      * 2-level checkpoint switch added
1910        (tested in EXP. 1 of natl_box_adjoint)
1911      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1912    o SVD
1913      * first complete, non-hacked version for SVD calculations
1914      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1915        performed via direct access files admtlm_vector.it????
1916        (via ctrl_[un]pack)
1917      * optimcycle is used for ARPACK iteration counter
1918        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1919      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1920        and add linear transforms where necessary
1921      * controls are initial/final SST, SSS (can be extended; need to check
1922        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1923    o mdsio: filename info to both stderr, stdout
1924    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1925      from sign change
1926    
1927    checkpoint55j_post
1928    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1929      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1930    o add consistent build directories and .cvsignore files to verification
1931    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1932    o make all subroutines 30 or less characters in length for certain older
1933      compilers to work (a thorough search only turns up two routines in
1934      pkg/ptracers)
1935    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1936      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1937    
1938    checkpoint55i_post
1939    o change arrays for total vertical diffusivity (2.D if explicit,
1940      3.D if implicit) ; each ptracer uses its own background value.
1941    o added mnc/NetCDF output capability to ocn_compon_interf
1942      - added bits to verification/cpl_aim+ocn so that it can run on
1943        ITRDA and other clusters without the mpirun "-wd" option
1944    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1945      configuration
1946    o give MNC the ability to create additional files rather than
1947      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1948      - the default is just less than 2GB which is a practical limit
1949        on many systems
1950    o Compute the non-local term using either KPP vertical diffusivity (=default)
1951       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1952    
1953    checkpoint55h_post
1954    o add verification test "vermix"
1955    o remove all the *_ioinc flags and replace with the single global
1956      outputTypesInclusive flag
1957    o allow to set a vertical profile of vertical diffusivity for T & S
1958    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1959    o useMNC moved from data.mnc to data.pkg
1960    
1961    checkpoint55g_post
1962    o Renaming carbon AD experiments to comply with testreport conventions
1963    o Updating adjoint of Held-Suarez hs94.1x64x5
1964    o Fixing directives for non-ECCO forward_step, after ECCO directives
1965      have been fixed to avoid recomp. of do_oceanic_phys
1966      Works well for global_ocean.90x40x15,
1967      but recomp. issue remains for carbon
1968    o Updating adjoint output for natl_box_adjoint after
1969      pkg/ecco has been modified (see taga c55d_post)
1970    
1971    checkpoint55f_post
1972    o rename to timeave_init_fixed
1973    
1974    checkpoint55e_post
1975    o some delicate re-shuffle of store directives to avoid one
1976      extra call of do_oceanic_physics
1977      affects ecco_the_main_loop.F, do_oceanic_physics.F
1978      checkpoint_lev1_directives.h
1979    o NB: this may break global_ocean adjoint temporarily,
1980      but it is clear how to fix it. Will do later, need this now.
1981    
1982    checkpoint55d_post
1983    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1984    o ecco_cost_weights is modified to 1x1 runs
1985    o modifs to allow observations to be read in as
1986      single file or yearly files
1987    o enable to read exf forcing fields as either
1988      single file or yearly files (flag useExfYearlyFields)
1989    checkpoint55d_pre
1990    
1991    o switch between 2-level and 3-level checkpointing
1992    o add ability of MNC to write local and "partial" (eg. 2D slices where
1993      the full 3D field is never actually stored) arrays to NetCDF files
1994      with the correct (that is, the complete multi-dimensional) set of
1995      array indicies
1996      - used in mom_vecinv() to write the diagFreq output
1997      - tested (demonstrated) in verification/aim.5l_cs
1998    o further mnc-ification
1999      - add verification/lab_sea to the list with mnc setups
2000      - fix undefined mnc v-names in cd_code
2001      - add kpp to mnc output (both snapshot and timeave)
2002    o non-hydrostatic code
2003      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2004        in calc_gw.F
2005      - defaults to viscAh
2006      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2007        friction or Leith) in non-hydrostatic mode, as long as there is
2008        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2009    o pkg/cost
2010      extend simple cost functions to treat time mean quantities
2011      (T,U,V) via cost_accumulate_state from cost_tile
2012    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2013        be 2 times larger than the minimum size the advection scheme requires.
2014        now get a perfect conservation of salt in advect_cs test-exp (updated)
2015    o GGL90 (Gaspar's TKE mixed layer)
2016      - add horizontal diffusion of TKE, requires exchanges in
2017        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2018        default. In OPA there is no horizontal diffusion of TKE but the
2019        mixing coefficients are computed from a horizontal average of TKE of
2020        6 points or so. I think that diffusion has a little more physical
2021        justification.
2022      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2023        was in vain)
2024      - mask tke-variable in ggl90_init
2025    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2026    o fix biharmonic diffusion on CS-grid.
2027    o more obcs stuff
2028      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2029        for reading boundary values. This routine is called from
2030        obcs_prescribe_read
2031      - updated obcs_check
2032      - changed sponge layer relaxation parameter units for days to seconds
2033      - turned off sponge layer by default
2034      - changed argument list of OBCS_CALC to myTime+deltaTclock
2035      - fixed about 35 bugs in obcs_external_fields_load
2036    
2037    checkpoint55c_post
2038    o obcs stuff
2039      - new runtime flags useOBCSprescribe, useOBCSbalance
2040      - re-arranged obcs_calc
2041      - moved exf_getobcs to obcs_prescibe_read
2042        obcs_prescibe_read is called after ORLANSKI stuff
2043        and independent of it (executable can contain all).
2044      - updated obcs_check
2045      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2046        These may be necessary only if tangential velocities are
2047        prescribed at OB, not sure, needs testing.
2048    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2049      which simplifies the calls and passes the ifc check-bounds test
2050    
2051    checkpoint55b_post
2052    o add a 2D scalar, Z location, exchange_2 routine.
2053    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2054      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2055      affects advect_cs results (for the wrong reason): update output.txt
2056    o use a more standard discretization for biharmonic viscosity ;
2057     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2058      affects results of dome set-up: update output.txt
2059    o fix gad_advection.F (CubedSphere part), back to version 1.23
2060    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2061    
2062    checkpoint55a_post
2063    o merged code to
2064      * prescribe/read time-dependent open boundaries
2065        (works in conjunction with exf, cal)
2066      * sponge layer code for open boundaries
2067      * each boundary N/S/E/W now has its own CPP option
2068        (healthy for the adjoint)
2069    
2070    checkpoint55
2071    o up-to-date adjoint of previous breaks
2072      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2073      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2074      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2075      - carbon: * remove tr1-related adjoint verification
2076                * add ptracer as control variable
2077    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2078      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2079    
2080    checkpoint54f_post
2081    o in verification/carbin/ remove experiment related to
2082      ALLOW_PASSIVE_TRACER (array tr1 etc)
2083      code_ad/ input_ad/ results_ad
2084    
2085    o add two new packages
2086      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2087        + subject to optimization (memory)
2088      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2089        + subject to reordering (many GOTOs in the original code)
2090        + so far opps is called for every (i,j) point, and then operates in
2091          the vertical; one may want to reorder the scheme in order operate in
2092          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2093          fields)
2094    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2095      - all verification tests compile and run with linux_ia32_g77
2096      - defaults are compatible with current input files--nothing
2097        should change if you were not previously using MNC
2098      - MNC output has been added in numerous places (eg. timeave)
2099        but there are still a few writes not yet do-able with MNC
2100        (this is in progress)
2101      - flags now allow for either/or/both use of MDSIO and MNC and
2102        documentation will soon follow
2103      - numerous small formatting cleanups for ProTeX
2104    o add version info (via BUILD_INFO.h) to MNC and stdout
2105    
2106    checkpoint54e_post
2107    o add two new packages
2108      - pp81 (Packanowski and Philander, 1981), Richardson number and
2109        stratification dependent mixing
2110      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2111      - these scheme operate in a similar manner as KPP (without ghat, of
2112        course), however there is only one diffusivity that is used for both
2113        temperature and salinity (and passive tracers)ç
2114    o add offline package
2115    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2116      provided by Stephanie Dutkiewicz
2117    o genmake2: add ability to search for C compilers and cleanup test output
2118      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2119    
2120    checkpoint54d_post
2121    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2122    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2123      leading to additional shift by 5 days each year of integration
2124       (i.e. leading to considerable offset over the years)
2125    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2126    o start with no AB and no initial filtering (staggerTimeStep):
2127      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2128    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2129      (external loading & cpl import/export stay in forward_step.F)
2130    o update coupling interface to work with new staggerTimeStep
2131    o change MDSIO ptracers_pickup.
2132    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2133    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2134    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2135    
2136    checkpoint54c_post
2137    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2138      this affects (truncation error) output.txt of test-exp:
2139       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2140    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2141    o change Qnet to always be the net heat flux, (+upward).
2142      affects (truncation error) output of natl_box exp.: updated
2143    o define the max number of passive tracers in PTRACERS_SIZE.h
2144    o start to test mnc routinely in exp0
2145    o add sea-ice loading (sIceLoad) as a new forcing field.
2146    
2147    checkpoint54b_post
2148    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2149       impressive on Altix and Opteron systems)
2150    o diagnostics can now write NetCDF files through the mnc package
2151    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2152    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2153    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2154      affects (truncation error) output of lab_sea & natl_box exp.: updated
2155    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2156    
2157    checkpoint54a_post
2158    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2159    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2160    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2161    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2162      + internal_wave (shift in writing cg2d_ini_res)
2163    checkpoint54a_pre
2164    
2165    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2166      - modified verification/lab_sea and natl_box_adjoint accordingly
2167    
2168    checkpoint54
2169    checkpoint53g_post
2170    o prepare splitting of thermodynamics: store convect.counter in common block
2171    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2172      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2173    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2174    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2175    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2176    o restore adjointability
2177    
2178    checkpoint53f_post
2179    o modifications that affect AIM experiment results (update output.txt):
2180      - no advection of S at top interface Nr (pkg/generic_advdiff)
2181      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2182    o AIM pkg:
2183      - include stability function into surf.Flux derivative relative to Tsurf
2184      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2185    
2186    checkpoint53e_post
2187    o merged cylindrical coord configuration
2188    o added rotating_tank experiment
2189    checkpoint53e_pre
2190    
2191    checkpoint53d_post
2192    o faulks upgraded: re-generate output.txt that have changed:
2193       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2194    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2195    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2196    o added Sadourny discretization of Coriolis
2197      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2198      - re-enabled use of omega3 (useAbsVorticity)
2199    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2200      vector-invariant equations
2201      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2202    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2203      hopefully without new bugs
2204      - still to do: biharmonic friction for non-hydrostatic w
2205    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2206    o regenerated output for global_ocean_ebm (using -ieee)
2207    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2208      of mom_common/
2209      - simple re-arrangement of instructions within computing loop
2210    checkpoint53d_pre
2211    
2212    checkpoint53c_post
2213    o new version of coupler for AIM+thSIce and Ocean models
2214     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2215     - land: change Evaporation of snow
2216     - aim with thSIce: fix bug in snow-precip.
2217    o changes to calc_gw.F
2218     - bug fix for w^2 term near the bottom boundary
2219     - (hopefully) improve the lateral slip boundary condtions for use with
2220        partial/looped cells
2221      - because the bug fix changes two verification experiments anyway (exp5
2222        and plume on slope), change the lateral boundary condition from half slip
2223        to the value of no_slip_sides
2224    o ebm package wasnt quite up to the parallel task. Fixed that.
2225    o Adjoint of EBM package + verification
2226      * TLM OK
2227      * ADM not sufficient accuracy yet (needs further testing)
2228    
2229    checkpoint53b_post
2230    o Commiting new energy balance model to repository
2231      * package is pkg/ebm
2232      * verif. is verification/global_ocean_ebm
2233      * references are in ebm_driver.F
2234    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2235    C        Global thermohaline circulation. Part I:
2236    C        Sensitivity to atmospheric moisture transport.
2237    C        J. Climate 12(1), 71-82
2238    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2239    C        Global thermohaline circulation. Part II:
2240    C        Sensitivity with interactive transport.
2241    C        J. Climate 12(1), 83-91
2242    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2243    C        Destabilization of the thermohaline circulation
2244    C        by atmospheric eddy transports.
2245    C        J. Climate 7(12), 1870-1882
2246    o Will need long integration testing.
2247    checkpoint53b_pre
2248    
2249    o created pkg/mom_common in preparation for variable viscosity code
2250    o renamed and split ini_mnc_io
2251    o pkg/land: only liquid water can diffuse or run-off
2252    o AIM using land: soil wetness availability account for snow
2253    o added printMapIncludesZeros to EEPARMS namelist
2254    
2255    checkpoint53a_post
2256    o restore TAMC compatiility for exf_constants.h
2257      (no usage of _d in .h)
2258    o Additional storing in KPP in an attempt to fix
2259      TAMC problem with adjoint of KPP code.
2260      (no success...)
2261      Identical code works fine with TAF.
2262    o Fixed verification/natl_box_adjoint experiments.
2263      Initial conditions for Experiments 4 and 5 are now
2264      set to "SEAICE_initialHEFF=0", which is more reasonable,
2265      and hence gives results closer to that of Experiment 2.
2266      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2267    
2268    checkpoint53
2269    o stable checkpoint with up to date adjoint
2270      TLM tests only run for 1st grdchk at the moment. Its unclear if
2271      this is a code problem or a problem with resetting code for g_
2272      variables that is being autogenerated wrong.
2273      Otherwise:
2274       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2275       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2276         are both still in chaos following their security messes.
2277    
2278    checkpoint52n_post
2279    o various build (mostly genmake2) changes including:
2280      - ability to build/run more easily within Cygwin and MacOS X
2281      - more complicated Makefiles with a stronger dependence on Gnu Make
2282    o pkg/seaice modifications
2283      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2284        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2285        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2286      - changed proxy for geostrophic velocity and updated
2287        verification/lab_sea/results/* accordingly
2288      - removed ADI dynamic solver from pkg/seaice
2289      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2290        they caused a segmentation fault under certain circumstances
2291      - removed unused field WATR
2292    o bug fix in exf-package:
2293      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2294         now reflect that.
2295    o small fixes in the cal-package:
2296      - set reference date to first of January for the 'model'-calendar
2297      - failing of cal_CheckDate in cal_FullDate now actually results in a
2298        warning
2299    o small modifications in exf-package to increase flexibility:
2300      - change climtempfreeze from a constant to a runtime parameter that
2301        is specified in data.exf_clim (default = -1.9)
2302      - introduce runtime parameter windstressmax (default = 2.0) that is
2303        specified in data.exf
2304    o fix in pkg/thsice:
2305      - update Evap (Tsf changes) to be consistent with Latent heat flux
2306      - maintain snow precipitation unchanged (even if Tsf >=0).
2307     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2308    
2309    checkpoint52m_post
2310    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2311      this does not change any of the results, because myIter=0 in swfrac always
2312      lead to jwtype=2 (the default anyway), but the call makes little sense
2313      as a default
2314    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2315    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2316      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2317    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2318    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2319    o extending useSingleCpuIO option to work with new exch2 I/O format
2320      - old-style, missing-tile I/O is still accessible by defining CPP
2321        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2322    o monitor package can write to NetCDF files and/or STDOUT
2323    o fix re-definition bug in MNC_GRID_INIT_ALL()
2324    o doc/api_reference added
2325      - a framework for building an API Reference Manual using all
2326        the "protex" comments embedded in the code
2327      - see pkg/generic_advdiff, pkg/mnc for examples
2328    o MNC:
2329      - make myThid the last argument for all subroutines
2330      - new default for the grid files: NO halos
2331      - add useMNC and other run-time flags
2332      - separate per-file-group handling of the unlimited dimension
2333      - early initialization of MNC w/ flags read at the eeboot stage
2334        and lookup tables set in initialize_fixed
2335      - write all MNC output to a freshly-created directory
2336    o thermodynamics sea-ice (thsice) is now tested with testreport.
2337    o test exp. advect_cs: use the standard cs32 grid ; update output.
2338    o Added functionality to grdchk:
2339      pick global i,j,k position (or nearest wet) where to perform check.
2340    
2341    checkpoint52l_post
2342    o new land formulation:
2343      a) use ground enthalpy as prognostic variable to ensure exact
2344         energy conservation.
2345      b) account for water temperature and for latent heat of freezing
2346         in all processes (rain, run-off, ground storage)
2347      c) compute surface and ground temperature implicitly.
2348    o aim_v23 modification for new land model:
2349      a) Treat separately land / ocean / sea-ice surface fluxes
2350         to allow implicit computation of land & sea-ice surface temp.
2351      b) add snow precipitation.
2352    checkpoint52l_pre
2353    
2354    o fix problem (when 1 tile is empty) in min/max monitor.
2355    o fix bug in timeAve (u,vZetatave in common block)
2356    o no restoring terms under ice for pkg/seaice
2357    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2358    o bug fix for pkg/seaice pickups
2359    o change MNC call locations and add coordinate attributes
2360    o mask vorticity at the corner ; affects global_ocean.cs output
2361    o fix ini_curvilinear_grid ; test CS experiments with mpi
2362    o aim.5l_cs: modify sea-ice fraction input file ; update output
2363    o exf: Adding simple range check routine for exf fields after read
2364    
2365    checkpoint52k_post
2366    o removed top-level directory "diags"
2367      - we migrated these functions to pkg/timeave a long time ago
2368    o fixed bug introduced in pkg/monitor
2369    o accuracy ctrlprec = 32 insuffient for gradient checks using
2370      averaged fields (I/O via cost_averages)
2371      -> use ctrl.h in active_file*.F to control I/O precision.
2372    o paramter list of CALL ADTHE_MAIN_LOOP
2373    o added initial do_the_model_io to ecco
2374    o set all ...Freq to zero after cost_final
2375      taveFreq, dumpFreq, pChkptFreq
2376    o MAIN and ECCO differentiability restored
2377    
2378    checkpoint52j_post
2379    o fix nchklev in tamc.h for global_ocean...
2380    o Bringing flow and store directives up-to-date
2381    o Really weird thing!
2382      call do_the_model_io from the_main_loop with parameters
2383      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2384      TAF places a faulty re-call of initialise_varia
2385      after cost_final call which should not be there!
2386    checkpoint52j_pre
2387    
2388    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2389      error messages
2390    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2391    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2392      debug output
2393    o modfied mdsio_writefield.F to handle non-global files under exch2
2394    o update AIM Cubed-Sphere exp (aim.5l_cs):
2395      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2396    o update AIM Equatorial Channel exp:
2397      use standard aim_v23 pkg and change the SST fields to be more realistic.
2398    o globalFile now works with exch2
2399    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2400      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2401    o limit timeave output for hi-res integrations
2402    
2403    checkpoint52i_post
2404    o removed CPP_EEOPTIONS.h from verification/*/code
2405    o updated the tiling for global_ocean_pressure
2406    checkpoint52i_pre
2407    
2408    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2409      the old pkg/aim).
2410    
2411    checkpoint52h_pre
2412    o shortened offending lines in exch2_send_rx?.template
2413    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2414    o genmake2: add build & execute test for NetCDF code
2415    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2416      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2417    o added useSingleCPUIO flag to monitor.F and mon_out.F
2418    o added temporary hack for sea-ice dynamics on the cube:
2419      metric terms are ignored and it is assumed that
2420      there is no sea-ice on cube faces 1, 2, 4, and 5.
2421    
2422    checkpoint52f_post
2423    o added exch2 cube routines to pkg/exch2
2424    o modified hs94.cs-32x32x5 to use it
2425    o added new grid files to hs94.cs-32x32x5
2426    checkpoint52f_pre
2427    
2428    checkpoint52e_post
2429    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2430      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2431    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2432      to work with implicit vertical advection and AB ;
2433    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2434    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2435     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2436    checkpoint52e_pre
2437    
2438    o fix bug in impldiff when Nr=1 or Nr=2.
2439    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2440    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2441    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2442      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2443    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2444    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2445    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2446    
2447    checkpoint52d_post
2448    o re-tiled many expts to allow comparison in multi-processor mode
2449      - updated output accordingly
2450      - changed hs94.128x64x5 to use intial T from file rather than use the
2451        random number generator
2452    o add infrastructure in model routines for fizhi and gridalt packages
2453    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2454    o changes to permit hi-res, cubed-sphere, configuration
2455      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2456      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2457      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2458        of surface winds for the cube
2459      (A verification experiment, based on global_ocean.cs32x15, but with
2460       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2461       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2462       complete with example surface forcing files and matlab scripts to look
2463       at the output and compare it with that of global_ocean.cs32x15.)
2464    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2465       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2466       to conform to the common rule.
2467    o check-in the first version of the coupler + interfaces for multi-components
2468       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2469       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2470       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2471       - ocean and atmos. share the same horizontal grid (no interpolation).
2472       - exchanges between component and coupler is done in forward_step
2473    o new verification experiment, cpl_aim+ocn:
2474       coupled ocean - AIM atmosphere on cs32 grid.
2475    
2476    checkpoint52d_pre
2477    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2478    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2479    
2480    checkpoint52c_post
2481    o Fixing OPTIONS files for use of exf:
2482      - ALLOW_ECCO not needed
2483      - ECCO_CPPOPTIONS.h should not be included from
2484        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2485        as has been the case in the past
2486      - All cal/exf related options are currently set in
2487        single header file. Should remain so until we
2488        agree on a consistent new policy.
2489    o Removed all CPP options for cal package.
2490      cal has no more CPP options.
2491    o modified STOREs in GAD_ADVECTION
2492    o corrected key comp. for passkey
2493    
2494    checkpoint52b_post
2495    o new version: "thsice" of thermodynamic sea-ice pkg:
2496     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2497     - modify fluxes but do not change theta directly;
2498     - light cleaning of bulk_force pkg (still needed with thsice).
2499     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2500       + output_thsice.txt to test thsice & bulk_force pkgs.
2501    o put back grid & coriolis monitor output.
2502    checkpoint52b_pre
2503    
2504    o call "do_the_model_io" at the beginning (=> dump initial state)
2505    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2506    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2507      (need info on NUMBER_OF_PTRACERS)
2508    o missing PTRACERS headers in some routines
2509    o default tamc.h in pkg/autodiff supposed to crash
2510      to ensure proper customization
2511    
2512    checkpoint52a_post
2513    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2514      - moved surfaceTendencyTice from pkg/seaice to main code
2515      - subroutine FREEZE_SURFACE now limits only surface temperature
2516        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2517        => new output.txt for global_ocean.cs32x15 & global_with_exf
2518      - keep the old version of FREEZE for backward compatibility;
2519        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2520      - corresponding modifs for TAF directives
2521    o added surface flux output variables to TIMEAVE_STATVARS
2522    o time-averaged output for pkg/ptracers
2523    o fix problem with ECCO-related divided adjoint
2524      snapshot file was missing some ad-variables,
2525      but no warning issued by TAF
2526    
2527    checkpoint52a_pre
2528    o some bug fixes for #undef REAL4_IS_SLOW
2529    
2530    checkpoint52 = ecco_c52_e35
2531    o after testing adjoints of checkpoint51u_post
2532    
2533    checkpoint51u_post
2534    o this is the post-merge tag of the ecco-branch
2535      (needs another clean checkout and re-testing)
2536    o various natl_box_adjoint configs and results
2537      but no input fields
2538    o obcs adjoint not yet merged!
2539    o adding ECCO global 1x1 and 2x2 degree configs
2540    o updated/extended some store directives for seaice
2541    o pkg/ecco now containes ecco-specific part of cost function
2542    o top level routines the_main_loop, forward_step
2543      supersede those in model/src/
2544      previous input data.cost now in data.ecco
2545      (new namelist ecco_cost_nml)
2546    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2547    
2548    checkpoint51t_post
2549    o this is the pre-merge tag of the ecco-branch
2550    
2551    checkpoint51s_post
2552    o cleanup: removed various obsolete #define-s
2553    o pkg/grdchk
2554      - renamed 'ph-grd 3' to 'grad-res'
2555      - merged from ecco-branch
2556        (remaining bug fixes for obcs gradient checks)
2557      - additional high-precision output for testreport
2558        (grep for 'precision_grdchk_result')
2559    
2560    checkpoint51r_post
2561    o cleaned up or removed CPP_OPTIONS.h files
2562    o updated results for some of the tests to reflect the new
2563      optfiles (-ieee: -O0 instead of -O3)
2564    
2565    checkpoint51q_post
2566    o cd_code:
2567      - moved cd_scheme.F -> cd_code_scheme.F
2568      - separate read_checkpoint from cd_code_ini_vars.F
2569      - separated cd_code part from write_checkpoint
2570      - updated AD_SOURCE, generated .flow
2571      - added CD_CODE_VARS.h to the_main_loop
2572      - Moving cd_code specific store dir.s to pkg/cd_code
2573    o ctrl package totally restructured
2574      - pack/unpack now optional and decoupled from
2575        xx_/adxx_ I/O
2576      - ctrl_pack/unpack cleaned
2577        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2578      - confined inclusion of AD_CONFIG.h to where necessary.
2579    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2580    
2581    checkpoint51p_post
2582    o create initial cd_code package
2583      - WARNING: the initialization of fields within packages
2584        is broken because INI_FIELDS (where READ_CHECKPOINT is
2585        called) is called *before* PACKAGES_INIT_VARIABLES.
2586        This seems to be backwards since
2587        1) its important to initially zero the entire field including
2588           the "halo" region
2589        2) zeroing needs to be done *before* reading pickup info
2590           and the pickup call might or might not happen in any
2591           particular run
2592      - this needs an overhaul for R2
2593    o cleanup verification/*/code/GMREDI_OPTIONS.h
2594    o cleanup testreport
2595    
2596    checkpoint51o_post
2597    o bringing AD-related verif's up to date with genmake2
2598      - carbon/
2599      - global_ocean.90x40x15/
2600      - hs.94.1x64x5/
2601      - (front_relax/ )
2602    o (more) consistent directory structure for AD-related verif.'s
2603    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2604    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2605    o bug fix in find_alpha.F for MDJWF:
2606      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2607        change rho -> rho-rhoConst
2608      - replace call find_rho to find_rhonum
2609    o initialisation of rFlx extended to full array (required by TAF)
2610      and shifted to thermodynamics
2611    o removed PTRACERS.h in ptracers routine
2612    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2613    o Correcting initialisations for fVerU, fVerV.
2614    o helping TAF to recognize dependency on kUp for
2615      fVerU, fVerV
2616    o Replacing delZ by delR in pkg/ctrl/
2617    checkpoint51o_pre
2618    
2619    o undid all of cp51 pending some cleanups and discussion
2620    o added the [#include "AD_CONFIG.h"] statement to all files that need
2621       it for adjoint/tl #defines
2622     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2623     o removed tools/genmake since it no longer works
2624    
2625    checkpoint51n_post
2626    o modifications to make FREEZE flux visible to pkg/kpp
2627      - moved surfaceTendencyTice from pkg/seaice to main code
2628      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2629      - subroutine FREEZE now limits only surface temperature
2630        (this means new output.txt for global_ocean.90x40x15,
2631         global_ocean.cs32x15, and global_with_exf)
2632    o added surface flux output variables to TIMEAVE_STATVARS
2633    
2634    checkpoint51n_pre
2635    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2636    o added [#include "AD_CONFIG.h"] to all files that use the following
2637      defines:
2638      - ALLOW_ADJOINT_RUN
2639      - ALLOW_TANGENTLINEAR_RUN
2640      - ALLOW_ECCO_OPTIMIZATION
2641    
2642    checkpoint51m_post
2643    o incorporating changes to get TAMC/TAF working in genmake2
2644      - added new TAMC/TAF targets to the Makefile
2645      - various cleanups related to package handling
2646      - these changes should have no impact on the forward model
2647    
2648    checkpoint51l_post
2649    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2650     - faster algorithm for cal_addtime.F
2651     - higher precision arithmetic, where needed
2652     - pkg/exf *startdate variables changed from calendar date to
2653       model integration time
2654    
2655    checkpoint51l_pre
2656    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2657    o enable to apply restoring on S & T only in a latitude band.
2658    o update output (external_forcing_surf modif. change truncation errors)
2659       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2660    
2661    checkpoint51k_post
2662    o change default to: useNHMTerms=.FALSE.
2663     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2664       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2665     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2666        exp1, ideal_2D_oce
2667     - change data file of oceanic exp (leave the results unchanged for now)
2668       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2669    o set gravitySign automatically according to the vertical coordinate used
2670      (and change sign: back to "logical" value: +1 when R increases downward)
2671    o added an include barrier to the default CPP_OPTIONS.h and
2672      removed the #include "PACKAGES_CONFIG.h" from it
2673    o fix a bug in mom_fluxform (from chk51j_post)
2674    
2675    checkpoint51j_post
2676    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2677    o adjusted some flow directives (dynamics, thermodynamics)
2678    o added cubed-sphere case to test cost function
2679    o heckpoint_lev?_directives.h now include
2680      pkg-specific directives, whenever those are enabled.
2681    o Moving pkg-specific flow directives to corresponding pkg
2682      Moving pkg-specific differentiation list to corresponding pkg
2683      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2684      ---> conventions are
2685           - pkg_ad.flow
2686           - pkg_ad_diff.list
2687           - pkg_ad_check_lev?_dir.h
2688    
2689    checkpoint51i_post
2690    o merge of the branch-genmake2
2691      - knowingly breaks the older genmake
2692      - automatic generation of all ALLOW_${PKG_NAME} defines
2693      - new testreport supersedes older testscript
2694    o large number of package inclusion and header cleanups
2695    checkpoint51i_pre
2696    
2697    o new output for adjoin of global ocean vector invariant
2698    o fix for checkpoint of thermodynamic seaice and bulk_force
2699    o Steph gchem various cleanups
2700    
2701    checkpoint 51h_pre
2702    o fixed some single quotes
2703    o modify gchem pkg to be more versatile
2704    o modifications to clean up dic pkg
2705    o add pkg/cfc
2706    
2707    checkpoint51g_post
2708    o provide links for ARPACK and ADM*TLM
2709    o start removing verification/vero/
2710    o update AD-related stuff
2711      (in particular some IF-statements in model/src/ routines)
2712    o adding to verification/global_ocean.90x40x15/ adjoint of
2713      vector invariant setup
2714    
2715    checkpoint51f_post
2716    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2717    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2718      of tracer Green's fucntions for ocean inversion project.
2719    
2720    checkpoint51f_pre
2721    o Added on-the-fly spatial interpolation capability
2722        "USE_EXF_INTERPOLATION" to pkg/exf.
2723      - This is a temporary Cartesian-grid hack until
2724        the super-duper ESMF coupler becomes available.
2725      - See verification/global_with_exf/README for usage example.
2726      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2727        flags and modified pkg/seaice accordingly.
2728    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2729        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2730        non-local transport term.
2731    
2732    checkpoint51e_post
2733    o pkg/mom_vecinv:
2734      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2735      - add time-ave diagnostic of vorticity advection.
2736    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2737    o atmospheric geopotential: - include water vapor effect;
2738                                - use p^kappa in p* scaling.
2739    o land pkg: read initial state from files.
2740    o AIM : add stratospheric drag in the upper level
2741    
2742    checkpoint51d_post
2743    o change function ILNBLNK (=> last non-blank char.) to return zero
2744      (instead of the string length) when the string. char is empty
2745    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2746    o modif's to restore TAMC compatibility
2747      - avoid "_d" constructs in PARAMETER declarations
2748      - avoid interrupting lines by comment lines
2749    o Use cluster local disks for purely local I/O
2750      vs. globally visible disks needed for ctrl stuff
2751      (merged from ecco-branch)
2752      - new active_file_loc... and mdsio_..._loc routines
2753      - affected packages: autodiff, ctrl, grdchk, mdsio
2754    
2755    checkpoint51c_post
2756    o introducing integer flag debugLevel
2757      - debLevZero: suppress all output
2758      - debLevA: standard
2759      - debLevB: equivalent to current debugMode=.TRUE.
2760    o introducing pathname variable mdsioLocalDir for mdsio
2761      that can be specified at runtime
2762      (relevant for cluster I/O to local disk)
2763    `
2764    >>>checkpoint51b_post
2765    adjoint of ptracers
2766    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2767    o extended state in checkpoint_lev?, etc.
2768    o alternative ctrl/cost with tr1 or ptracer
2769    o new comlev1_bibj_ptracers
2770    o new ptracers.flow
2771    o made ptracers_forcing same as external_forcing_s
2772    o added verification for adjoint with ptracers
2773      - adm. grdchk fail so far
2774      - tlm. grdchk OK
2775      - checked tapelev/comlev recomputations: OK
2776    <<<checkpoint51b_pre
2777    
2778    checkpoint51a_post
2779    o added code for biogeochemistry package
2780      - new pkgs: dic, gchem
2781      - new subroutine in ptracers
2782    o modify code for biogeo packages
2783      - in model/src and pkg/ptracers
2784    
2785    checkpoint51
2786    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2787      - autodiff, ctrl, exf, grdchk, seaice
2788      kept separate packages
2789      - cost, ecco, obcs
2790    o updating verification/internal_wave, verification/lab_sea
2791      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2792    
2793    checkpoint50i_post
2794    o Preparing next differentiable checkpoint and sync
2795      of MAIN vs. ecco-branch
2796      - 1st step: this one is differentiable
2797      - 2nd step: next(! not this) checkpoint will have updated packages
2798                  from ecco-branch)
2799    
2800    checkpoint50h_post
2801    o new package "land": provide surface BC for AIM.
2802    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2803    o AIM: use true log-P extrapolation for near surface temp (= as in
2804        F.Molteni paper) ; update aim.5l_cs output.
2805    o New variable in PARM03 for more flexible pickups
2806    o somewhat cleaned package initialisation sequence for
2807      ctrl/ cost/ ecco/ in packages_... routines
2808    
2809    checkpoint50g_post
2810    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2811      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2812      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2813        made the default because of faster convergence than ADI
2814    
2815    checkpoint50f_post
2816    o exf totally restructured
2817      - replaced all exf_set_ routines by one generic exf_set_gen.F
2818        and made sure it's still differentiable
2819      - split exf_getffields.F into new exf_bulkformulae.F
2820      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2821      - updated adjoint/makefile and relevant verif. accordingly
2822    
2823    checkpoint50f_pre
2824     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2825          + change Evap over land. (update aim.5l_cs output)
2826     o added missing .cvsignores and made uniform across expts
2827     o changed configuration of tidal_basin_2d expt
2828     o added pkg/debug functions for tracing code in fatal crashes
2829     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2830     o new fn in pkg/monitor to stop model if solution grows too big
2831     o removed lots of single quotes from comments
2832    
2833    checkpoint50e_post
2834    o make KPP work with PTRACERS
2835     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2836       nearly a copy of kpp_transport_s
2837     - there is no analogue to SurfaceTendencyS, so I have to use
2838       gPtr(of the surface layer) instead
2839    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2840    checkpoint50e_pre
2841    
2842    checkpoint50d_post
2843    o change kpp output from multiple-record state files to single-record state
2844      files analogous to write_state.F
2845    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2846      analogous to the cg2d-related output.
2847    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2848      so that writing to internal file fn (with length 512) fails.
2849    checkpoint50d_pre
2850    
2851    checkpoint50c_post
2852    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2853    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2854    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2855    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2856    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2857    
2858    checkpoint50c_pre
2859    Merging from release1_p13:
2860    o bug fix for pkg/seaice dynamic solver
2861    o Added SEAICE_initialHEFF to pkg/seaice
2862    
2863    checkpoint50b_post
2864    o store u*,v* in gU,V instead of in guNm1,gvNm1
2865    o in order to put the momForcing out of the Adams-Bashforth:
2866      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2867      to timestep.F
2868    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2869    o re-generate output for highly sensitive test-exp:
2870       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2871    
2872    checkpoint50b_pre
2873    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2874    o corrected CPP option mismatch in exf_Bulk... functions for case
2875      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2876    
2877    checkpoint50a_post
2878    o Bug fix for merging between c50 and KPP.
2879      ikey was passed from thermodynamics to kpp_calc via
2880      common block rather than being recomputed in kpp_calc,
2881      in contradiction with new key itdkey.
2882      New key ikppkey created, and tamc.h headers updated.
2883    
2884    checkpoint50
2885    - 2nd step of merge with ecco-branch:
2886      merge changes in ecco-branch back into main trunk
2887    - bug fix in find_alpha
2888    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2889    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2890    - merged some sliced AD support routines
2891    
2892    checkpoint49
2893    merged from ecco-branch:
2894    o exf:
2895      - Enable initialisation of forcing fields to constant
2896        (runtime) values.
2897      - in exf_getffields.F
2898        Reduce i-/j-loop to interior domain, discarding overlaps.
2899        That also fixes wrong TAF-key computations for key_1, key_2
2900        with bulf formulae.
2901      - exf_init.F modify #ifdef for exf_init_evap
2902      - exf_getffieldrec.F, ctrl_getrec.F
2903        The following INT-usages are not safe:
2904          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2905          fldcount = int(fldsecs/fldperiod) + 1
2906        and were modified.
2907    o autodiff: checkpoint_lev...
2908      - updated storing for bulk formulae (some arrays were missing)
2909      - added state for seaice package
2910      - synchronized with main branch
2911    o DIVA:
2912      Modif.s in
2913      - the_main_loop.F
2914      - the_model_main.F
2915      and added cost_final_restore.F cost_final_store.F
2916      o With these changes, it is possible to fully separate
2917        the first forward run to compute the cost function (mdthe_main_loop)
2918        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2919        into separate model executions.
2920        This enables better tuning of DIVA to given queue sizes.
2921      o Loss of cost function value in consecutive DIVA runs is
2922        fixed by storing to 'costfinal' file.
2923      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2924        beginning/end of adjoint integration is accounted for.
2925      The current changes apply to TAF-1.4.26.
2926      TAF has one remaining bug, requiring one manual change
2927      (see MITgcm manual).
2928    o cal: synchronized between MAIN and ecco-branch
2929    
2930    checkpoint48i_post
2931    o Changes to restore differentiability of code w.r.t. previous tag
2932      (mostly adding new routines to make list and replacing
2933      pressure by totPhiHyd).
2934    o Updated and merged grdchk package
2935      - has both ADM and TLM checks
2936      - works for single- and multi-proc.
2937      - output cleaned
2938      - worked successfully for parallel DIVA
2939    o genmake:
2940      - Adding -platform=SP4
2941      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2942    o Modif. for DIVA:
2943      ctrl_unpack should not be called in intermediate DIVA interval.
2944      (similar thing would apply for active files such as
2945      tbar, sbar, psbar, which should not be reinitialised;
2946      only relevant for ecco-branch)
2947    
2948    checkpoint48h_post
2949    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2950    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2951    o Added SEAICE_initialHEFF to pkg/seaice
2952    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2953    
2954    checkpoint48g_post
2955    --- EOS:
2956    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2957      store total Potential in totPhyHyd for diagnostics & EOS.
2958    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2959    --- Pressure/geopotential gradient:
2960    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2961    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2962      ( changes results of global_ocean_pressure )
2963    o NLFS + z-coord.: add eta*Rho' contribution.
2964    o accurate phiHyd when using interface-W at the middle between 2 centers
2965     ( changes results of ideal_2D_oce )
2966    o includes r* 2nd term in potential gradient.
2967    
2968    checkpoint48f_post
2969    Merging from release1_p12:
2970    o Modifications for using pkg/exf with pkg/seaice
2971      - improved description of the various forcing configurations
2972      - added basic radiation bulk formulae to pkg/exf
2973      - units/sign fix for evap computation in exf_getffields.F
2974      - updated verification/global_with_exf/results/output.txt
2975    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2976      (SBO) core products, including oceanic mass, center-of-mass,
2977      angular, and bottom pressure (see pkg/sbo/README.sbo).
2978    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2979      to avoid negative values in shallow regions.
2980      - updated verification/natl_box/results/output.txt
2981      - updated verification/lab_sea/results/output.txt
2982    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2983    o Added useSingleCpuIO option (see PARAMS.h).
2984    o Updated useSingleCpuIO option in mdsio_writefield.F to
2985      work with multi-field files, e.g., for single-file pickup.
2986    o pkg/seaice:
2987      - bug fix in growth.F: QNET for no shortwave case
2988      - added HeffFile for specifying initial sea-ice thickness
2989      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2990    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2991      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2992    o pkg/seaice:
2993      - adjoint-friendly modifications
2994      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2995    
2996    checkpoint48e_post
2997    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2998    o dynamics: change definition of computational domain & adapt mom_fluxform
2999      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3000    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3001        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3002        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3003        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3004        inverted_barometer solid-body.cs-32x32x1
3005      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3006    
3007    checkpoint48d_post
3008    o in preparation for r*:
3009     a) use pre-computed gradient of hydrostatic potential:
3010        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3011     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3012        => affects results of glob_oce_pressure (different truncation error)  
3013      update output.txt of ideal_2D_oce & global_ocean_pressure
3014    
3015    checkpoint48d_pre
3016    o in preparation for r*:
3017      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3018      pass the 2 comp. of the grad. as arguments to momentum S/R.
3019      but for the moment, only used if it does not change the results.
3020    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3021    
3022    checkpoint48c_post
3023    Modifications in treatment of initial flux forcing controls
3024    to avoid extra storing of flux fields.
3025    
3026    checkpoint48c_pre
3027    o Added tidal_basin_2d experiment (currently 1D!)
3028    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3029    
3030    checkpoint48b_post
3031    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3032     (modification to pressure gradient not yet implemented)
3033    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3034      (for U & V) that are used for vertical advection of momentum.
3035    
3036    checkpoint48a_post
3037    o In preparation for r*, use temp. array to compute vertical transport
3038       in flux-form momentum pkg. => change results of few test-exp.
3039      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3040                        lab_sea, natl_box & plume_on_slope
3041    
3042    checkpoint48
3043    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3044    
3045    checkpoint47j_post
3046    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3047    o moved adexch from forward_step to addummy_in_stepping
3048    o added exch in ctrl_map_...
3049    o aveFreq.=0. at end of cost_final to avoid overwrite in
3050      reverse checkpointing loop
3051    o Yet more changes in gmredi:
3052      * adgmredi_calc_tensor
3053        avoiding all recomputation of gmredi_slope_limit
3054      * adgmredi_x/y/rtransport
3055        added flag for excessive storing to avoid recomp. of
3056        u/v/rtans, dTdx/y/z
3057        -> this is not really necessary and very memory-consuming
3058      * adgmredi_slope_psi:
3059        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3060      * gmredi_slope_limit
3061        re-activated full calculation of taperfct for case 'ac02'
3062    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3063    
3064    checkpoint47i_post
3065    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3066    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3067      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3068    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3069    o gmredi: fix few bugs.
3070    
3071    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3072    This will be a good checkpoint to plug into the ecco-branch.
3073    o few modif.'s to get latest version adjointed
3074      (mainly kick out code in ini_linear_phisurf)
3075    o modif's to run adjoint with exactConserv
3076    o case GM_BOLUS_ADVEC should be cleaned
3077      S/R gmredi_slope_psi should be cleaned
3078    o verification/carbon now has exactConserv=.TRUE.
3079    
3080    checkpoint47g_post
3081    o time-average AIM output: becomes independent from statvars time-average
3082      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3083    o After TAF bug fix:
3084      Tested adjoint of gmredi package.
3085      Tests were done with checkpoint47 rather than with latest
3086      checkpoint47f_post since the latter is broken for the adjoint
3087      verification/carbon/ contains both ADM and TLM gradient checks.
3088    Here they are, before they get changed/lost/stolen.
3089    Mostly modif.'s to fix numerical sensitivities.
3090    Gradient checks OK for
3091    - GM_taper_scheme:
3092      * clipping
3093      * ac02
3094      * linear
3095      * glw91
3096      * dm95
3097      * ldd97
3098    - GMREDI_OPTIONS:
3099      * GM_VISBECK_VARIABLE_K
3100      * GM_NON_UNITY_DIAGONAL
3101      * GM_EXTRA_DIAGONAL
3102      * GM_BOLUS_ADVEC
3103    in conjunction with data.gmredi parameters to be checked in
3104    in a few minutes under verification/carbon/code/
3105    
3106    checkpoint47f_post
3107    Merging from release1_p10:
3108    o modifications for using pkg/exf with pkg/seaice
3109      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3110        and SEAICE_EXTERNAL_FLUXES
3111      - pkg/exf CPP options EXF_READ_EVAP and
3112        EXF_NO_BULK_COMPUTATIONS
3113      - usage examples are Experiments 8 and 9 in
3114        verification/lab_sea/README
3115      - verification/lab_sea default experiment now uses
3116        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3117    
3118    checkpoint47e_post
3119    o created a tag prior to creating a branch
3120    
3121    checkpoint47d_post
3122    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3123      at the bottom boundary had an erroneous half slip boundary condition
3124    o added bottom drag and no slip boundary condition capabilities to
3125      oceanic pressure coordinates code
3126    o added new verification experiment global_ocean_pressure, this experiment is
3127      also described in the tutorial section of the manual
3128    checkpoint47d_pre
3129    
3130    checkpoint47c_post
3131    o Added a verification experiment for a global cubed-sphere ocean run
3132      -  verification/global_ocean.cubed32x32x30
3133      -  uses pkg/therm_seaice and pkg/bulk_forcing
3134    
3135    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3136    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3137      when using P-coordinate; only implemented for atmospheric config.
3138    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3139      NOTES: requires option NONLIN_FRSURF to be "#define".
3140    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3141    
3142    checkpoint47b_post
3143    Merging from release1_p9:
3144    o pkg/seaice
3145      - removed GOTO's and added taf directives
3146      - double precision constants to reduce the g77 (Linux)
3147        to F77 (SGI) differences reported in release1_p8
3148    o tools/genmake
3149      - added SGI options
3150    o verification/testscript
3151      - updated to that of checkpoint47a_post
3152    o verification/global_ocean.90x40x15/input/eedata
3153      - modified for SGI f77 compatibility
3154    o verification/lab_sea
3155      - added description of sea-ice model
3156      - added missing matlab routines
3157      - added test of thermodynamics parallelization
3158    
3159    checkpoint47a_post
3160    o new pkg: aim_v23
3161     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3162       for now, keep the same surface forcing as before.
3163     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3164     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3165     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3166    o add diagnostic of surface correction term in monitor output
3167    
3168    o bulk_force and therm_seaice
3169    - Two packages:  bulk_force (Bulk forcing)
3170      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3171    - Earlier integration from Stephaine Dutkiewicz
3172      and Patrick Heimbach.
3173    - Two ifdef statements for compile time,
3174       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3175    
3176    checkpoint47
3177    differentiable version of checkpoint46n_post
3178    o bug fix in quasihydrostaticterms
3179    o * "clean" adjoint code (in terms of extensive recomputations)
3180        can now be obtained for all GMREDI options (i.e. for
3181        - GM_VISBECK_VARIABLE_K
3182        - GM_NON_UNITY_DIAGONAL
3183        - GM_EXTRA_DIAGONAL
3184        - GM_BOLUS_ADVEC )
3185      * However, wrong gradient check problem remains unsolved.
3186      * New CPP options have been introduced for different
3187        tapering schemes
3188    o external_fields_load now part of differentiation list
3189    o pressure needs multiple storing;
3190      would be nice to have store_pressure at beginning or
3191      end of forward_step, e.g. by having phiHyd global (5-dim.)
3192      (NB: pressure is needed for certain cases in find_rho,
3193      which is also invoked through convective_adjustment).
3194    o recomputations in find_rho for cases
3195     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3196    o #define ATMOSPHERIC_LOADING should be differentiable
3197    o ini_forcing shifted to begining of initialise_varia
3198    o Incorporating QNVS line search routines into MITgcm
3199      (this is separate code, and therefore not under pkg)
3200      lsopt/, optim/
3201    o Updated verification/carbon/
3202      - #define GM_VISBECK_VARIABLE_K
3203      - GM_taper_scheme    = 'ldd97'    
3204    
3205    checkpoint46n_post
3206    Merging from release1_p8:
3207    o verification/natl_box:
3208      updating new external_fields_load routine
3209    o New package: pkg/seaice
3210      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3211      The sea-ice code is based on Hibler (1979-1980).
3212      Two sea-ice dynamic solvers, ADI and LSR, are included.
3213      In addition to computing prognostic sea-ice variables and diagnosing
3214      the forcing/external data fields that drive the ocean model,
3215      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3216      The implied surface heat flux is then stored in variable
3217      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3218      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3219      non-local transport term.  Because this call precedes model
3220      thermodynamics, temperature under sea-ice may not be "exactly" at
3221      the freezing point by the time theta is dumped or time-averaged.
3222      N.B.: fairly large differences in accuracy occur across
3223            different platforms/compilers; comparison between
3224            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3225            generated output gives:
3226       T           S           U           V
3227      C D M    c        m  s        m  s        m  s        m  s
3228      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3229      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3230      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3231    
3232      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3233    o GAD:
3234      - generated new common blocks to account for call of
3235        same gad routines with differing traceridentities
3236        (needed to modify tracerIdentity indices in GAD.h)
3237      - generated separate common blocks for case useCubedSphereExchange
3238        (Department of Futurology)
3239      - parameter lists to gmredi_?transport: added tracerIdentity
3240      - added new key indices to tamc.h
3241    o external_fields_load:
3242      - added this routine to TAF list
3243      - needed to make some common blocks global and additional storing
3244        along the same lines as exf package (checkpoint_lev?_directives.h)
3245    o exf:
3246      updated external forcing package
3247      - bug fixes carried over from ecco-branch
3248        (missing OBCS_OPTIONS.h in two routines)
3249      - enable easy to use "no forcing".
3250      - added exf I/O for atmospheric loading
3251      - added exf I/O for runoff data
3252      - transfered scaling between exf <-> MITgcm to exf namelist
3253    o Adding new verification experiment global_with_exf.
3254      This verification experiment is almost identical to the
3255      global_ocean.90x40x15 experiment, except that it uses
3256      the exf (and cal) package instead of the
3257      external_fields_load routine (cf README file).
3258    
3259    checkpoint46m_post
3260    o modified testscript to return -- when there are no lines of "%MON" output
3261    o added new flag "quasiHydrostatic" for QH mode
3262      and new routine quasihydrostaticterms()
3263    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3264      New routine: mom_u_coriolis_nh()
3265    o fixed sign of non-hydrostatic metric terms in u and v equations.
3266      Depend on correct sign of gravitySign.
3267    o added work.pc* to .cvsignore in aim directories using ifc
3268    o introduced flag for controllin non-hydrostatic metric terms
3269    o removed gravitySign from PARM04
3270    o switched to g77/ifc from pgf77 in aim experiments
3271    
3272    checkpoint46l_post
3273    o made convective adjustment work with pressure coordinates:
3274     - changed the direction of k-loop in convective_adjustment.F for the
3275       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3276     - adjusted the reference pressure k-index in convective_adjustment.F
3277     - adjusted the convection condition in convect.F (in analogy to
3278       calc_ivdc.F)
3279     - convective_adjustment no longer computes anything on the halos
3280     - removed the warnings about negative salinity from find_rho.F and
3281       find_alpha.F; instead the new routine look_for_neg_salinity, called
3282       at the beginning of find_rho, find_alpha, and find_beta, does a
3283       check of the entire slice, if CPP-option
3284       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3285    checkpoint46l_pre
3286    
3287    checkpoint46k_post
3288    o fixed the verification/global_ocean.90x40x15 experiment:
3289     - new bathymetry (the world according to A., JMC, and M.)
3290     - new initial fields and forcing fields (*.bin files)
3291     - new POLY3.COEFFS (for the next release one should switch to a full
3292       equation of state: JMD95P or MDJWF)
3293     - fixed several errors and redundancies in the data file
3294     - experiment uses looped cells
3295     - added matlab directory with diagnostic scripts for plotting of output
3296    
3297    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3298     - read AIM physics parameters from a file (data.aimphys)
3299     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3300    
3301    checkpoint46j_post
3302    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3303    o move wVel computation at the end of the time step, in S/R integr_continuity
3304    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3305    o update timeave pkg for wVel diagnostic.
3306    checkpoint46j_pre
3307    
3308    checkpoint46i_post
3309    o Clean up AIM package (and keep the results unchanged):
3310      include CPP_OPTION and use IMPLICT NONE in all routines ;
3311      declare all the variables _RL ; use _d 0 for all numerical constants.
3312      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3313    
3314    checkpoint46h_post
3315    o cleaned up the use of rhoNil and rhoConst.
3316      - rhoNil should only appear in the LINEAR equation of state, everywhere
3317        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3318        and the dynamical equations are all divided by rhoConst
3319    o introduced new parameter rhoConstFresh, a reference density of fresh
3320      water, to remove the fresh water flux's dependence on rhoNil. The default
3321      value is 999.8 kg/m^3
3322    o cleanup up external_forcing.F and external_forcing_surf.F
3323      - can now be used by both OCEANIC and OCEANICP
3324    checkpoint46h_pre
3325    
3326     Added code to convert surface volume flux (fresh water) into
3327     a mass flux when using P coordinates in the ocean (OCEANICP).
3328     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3329    
3330    checkpoint46g_post
3331    o Include a new diagnostic variable phiHydLow for the ocean model
3332      - in z-coordinates, it is the bottom pressure anomaly
3333      - in p-coordinates, it is the sea surface elevation
3334      - in both cases, these variable have global drift, reflecting the mass
3335        drift in z-coordinates and the volume drift in p-coordinates
3336      - included time averaging for phiHydLow, be aware of the drift!
3337    o depth-dependent computation of Bo_surf for pressure coordinates
3338      in the ocean (buoyancyRelation='OCEANICP')
3339      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3340        Theta, Salinity, and Pressure in the parameter list. This routine is
3341        presently contained in find_rho.F. This routine does not give the
3342        correct density for 'POLY3', which would be a z-dependent reference
3343        density.
3344    o cleaned up find_rho
3345      - removed obsolete 'eqn' from the parameter list.
3346    o added two new verification experiments: gop and goz
3347      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3348    checkpoint46g_pre
3349    
3350    checkpoint46f_post
3351    o Enable tangent linear (forward mode) gradient checks:
3352      - extended active file handling to g_... files
3353      - added TANGENT_SIMULATION to theSimulationMode
3354      - extended grdchk package accordingly
3355    o added tangent linear setup in verification/carbon/code_ftl
3356    o added adjoint setup in verification/front_relax/code_ad
3357    
3358    checkpoint46e_post
3359    o Added new equation of state -> MDJWF
3360      - EOS of McDougall et al., 2002, JAOT, submitted
3361      - caveat: the equation of state is only valid for a smaller (more
3362        realistic?) range of values than JMD95P/Z and UNESCO
3363      - added masks to the calculation of pressure in store_pressure
3364      - added more check values for density in check_eos (ini_eos.F), some of
3365        the old check values are out of the range of the MDJWF-eos, so don't
3366        expect perfect matches for those
3367    checkpoint46e_pre
3368    
3369    checkpoint46d_post
3370    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3371      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3372      case of pressure coordinates. eosType='JMD95Z' in
3373      combination with buoyancyRelation='OCEANICP' now causes an error.
3374    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3375      in find_alpha/beta.
3376    checkpoint46d_pre
3377    
3378    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3379      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3380    
3381    checkpoint46c_post
3382    o Changes necessary for ocean in p-coordinates
3383     -  Added new buoyancy relation = 'OCEANICP'
3384     -  Added new parameters = gravitySign (this used to be contained inside
3385        the factor dRdZ which I added when we first switched to R coordinates).
3386     X GM/Redi is not compatible (yet)
3387     X bottom drag and no-slip need to be debugged.
3388    checkpoint46c_pre
3389    
3390    checkpoint46b_post
3391    o Added new equation of state -> JMD95Z and JMD95P
3392      - EOS of Jackett and McDougall, 1995, JAOT
3393      - moved all EOS parameters into EOS.h
3394      - new routines ini_eos.F, store_pressure.F
3395    o Added UNESCO EOS, but not recommended because it requires
3396      in-situ temperature (see JMD95)
3397    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3398      unesco.f to be used with POLY3
3399    checkpoint46b_pre
3400    
3401    checkpoint46a_post
3402    o Added (atmospheric) pressure loading
3403      - new field in FFIELDS.h, etc...
3404      - new cpp flag ATMOSPHERIC_LOADING
3405    o Changed hFacC to _hFacC in calc_phi_hyd.F
3406    o Added SHORTWAVE_HEATING to some files for consistency
3407    checkpoint46a_pre
3408    
3409    checkpoint46
3410    further merges from release1_p5
3411    o new ctrl package
3412      - adopted from ECCO environment to enable optimization
3413      - added Eliassen Palm fluxes to controls
3414    o added Eliassen Palm flux controls to gradient check package
3415    o cost package
3416      - Compatible with new ctrl package
3417      - added Eliassen Palm cost hooks
3418      - modif's of existing cost functions
3419    o Adjoint-related bug fixes in kpp:
3420      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3421      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3422    o autodiff package
3423      - flow directives:
3424        + new for S/R do_the_model_io
3425        + enhanced for S/R checkpoint
3426        + new gmredi.flow
3427      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3428        disable adcommon.h/g_common.h by default.
3429      - fixed problem for adjoint of global_max
3430    o modified verification/carbon/
3431    o New setup for adjoint of global_ocean
3432    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3433    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3434    o incorporated hooks for sponge layer code (external_forcing.F)
3435    
3436    checkpoint45d_post
3437    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3438    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3439      (affects plume_on_slope "cg2d" output)
3440    o add new parameter deltaTfreesurf for free-surface time stepping
3441    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3442    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3443    o change phiMin in exp1 (to agree with documentation)
3444    o add new flags:
3445     - T,S forcing inside/outside Adams-Bashforth
3446     - turn off temp,salt advection and/or forcing
3447     - for each tracer, define internal flag for multiDimAdvection & A-B
3448    o monitor: change definition of KE to check conservation of Energy
3449    
3450    checkpoint45c_post
3451    o Removed f90 comments ("!")
3452    o Modified initialisations to enable exf package for MITgcm
3453      (without invoking ECCO_PACKAGE).
3454    o modifications to gradient check package (Martin Losch)
3455      - enable centered differences
3456      - modified format of standard output
3457    
3458    checkpoint45b_post
3459    o cleaned exchange calls in cg2d
3460    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3461    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3462      to configure barotropic setup (Martin Losch)
3463    o moved some initialisations within bi,bj loop in dynamics
3464      (TAF flow dependency)
3465    o in initialise_varia, moved call packages_init_variables
3466      before convective_adjustment_init
3467      (corresponding adjustment of TAF tape initialisation).
3468    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3469    
3470    checkpoint45a_post
3471    o compute Rho over the whole domain (extend iMin,jMin indices)
3472    o specific exchange for X-slice domain (case Ny=1)
3473    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3474    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3475    
3476    checkpoint44h_post = checkpoint45
3477    o Fix to restore differentiability:
3478      place at which packages_init_variables is called in
3479      initialise_varia is crucial for reverse control flow.
3480    o modifications in GMRedi to enable stable adjoint
3481      (corresponding modif's in thermodynamics, dynamics)
3482    o added missing hook for sponge layer code in external_forcing
3483    o modified test cost functions
3484    o storing in gad_advection (plus removal of write(0,*)!
3485    o missing headers TR1.h added in convective_adjustment routines
3486    o errorMessageUnit set non-equal zero in eeboot
3487      (conflict on some platforms, e.g. IBM SP3)
3488    o modified carbon verif.
3489    
3490    checkpoint44h_pre
3491    o vertical grid option: allow to put the Interface at the middle between
3492      2 cell-centers ; replace delZ in pkg/kpp by drF.
3493    o GM Advective form: Tracers are advected using the residual transport (=
3494      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3495    
3496    checkpoint44g_post
3497    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3498      results) ; ifdef missing in thermodynamics.F
3499    
3500    checkpoint44f_pre,checkpoint44f_post
3501    o added PTRACERS package
3502      This allows an arbitrary number of passive tracers to be integrated
3503      forward simultaneously with the dynamicaly model.
3504      + Implemented so far:
3505        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3506        - I/O and checkpointing
3507        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3508      + Not implemented so far:
3509        - KPP
3510        - OBCS
3511      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3512        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3513        line in data.pkg.
3514      + This package is disabled by default since it increases storage.
3515    
3516    
3517    o testscript: added -cleanup option
3518    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3519                 b) enable to filter 2D fields.
3520    
3521    checkpoint44e_pre,post
3522    o re-wrote convective adjustment to use pre-calculated weights
3523      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3524      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3525      Original calls to convect() still in place.
3526    
3527    chkpt44d_pre,post
3528    o added missing EXCLUDE_MONITOR flags
3529    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3530      (incompatible typ in MIN/MAX expressions caused problems
3531      on IBM SP3)
3532    o in genmake added variable MAKEDEPEND
3533      plus resetting for case SunOS
3534    o added timer_stats.c routine for IBM SP3
3535    o removed variables in dynamics
3536    !!! I forgot to create tag chkpt44d_pre !!!
3537    !!! But chkpt44d_pre = chkpt44c_post    !!!
3538    
3539    o real fresh water flux implemented with non-linear free-surface.
3540    
3541    chkpt44c_pre,post
3542    o few fix (mask in shap_s2, EmPmR in external_field_load,
3543      USE_NATURAL_BCS in solve_for_P);
3544    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3545    
3546    checkpoint44b_pre/_post
3547    o merge of relevant stuff from the ecco-branch:
3548      - genmake: removed $S64 overwrite for case SunOS
3549      - pkg/exf: update and corrections for field swapping and obcs
3550      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3551                  harmonized between ECCO and MITgcm
3552      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3553                      updated checkpointing_lev... lists for obcs
3554      - model/src: minor changes in forward_step, plot_field
3555                   added directive for divided adjoint in the_main_loop
3556      - pkg/mdsio: added mdsio_gl_slice
3557    
3558    o check parameters & config (chkpt44a_pre,post)
3559    o OBC and NonLin_FrSurf.
3560    
3561    checkpoint44
3562    o fix bug in mom_vi_del2uv
3563    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3564    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3565    o update AIM experiments (NCEP input files)
3566    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3567    o added some stuff for AD
3568    
3569    checkpoint43
3570    o added two new advection tests
3571    o added global 4x4 degree ocean test
3572    o added test of H&S94 with free surface on cube
3573    o some final mods for gradient check, adjoint,...
3574    
3575    checkpoint42
3576      Fixed AD-related problems:
3577    o Store directives up-to-date with re-arranged Adams-Bashforth
3578      (mainly thermodynamics.F)
3579    o New store directives for multi-dim. advection schemes
3580      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3581      * new common block and key passkey
3582      (mainly gad_advection.F)
3583    o Modified store directives for split of dynamics/thermodynamics
3584      for the case ALLOW_KPP
3585    o Cleaned argument list for timestep_tracer.F
3586    
3587    checkpoint41
3588    o re-formatted/added comments in prologues of key subroutines
3589      to work with protex
3590    
3591    checkpoint40
3592    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3593    o added FLT (floats) package from Arne along with demo. experiment
3594    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3595      implementation of forward-in-time forcing terms
3596    o more mods for non-linear free-surface including new variable
3597    o modified multi-dim method to work on cube
3598    o bug fix in KPP (from DM)
3599    
3600    checkpoint40pre9
3601    o added DST advection schemes
3602    o fix MPI bug on SGI's
3603    o modifications for non-linear free-surface
3604    o fixed conditionals for fixed flow/passive tracer only mode
3605    o added tension/strain form of stress tensor
3606    o changes to commenting of arguments for TAF/TAMC
3607    o added/updated many matlab scripts
3608    o added multi-dimensional advection method for tracers
3609      
3610    checkpoint40pre8
3611    o new package rw/
3612      Added method for dumping intermediate local arrays:
3613      mdsio_writetile - same as mdsio_writefield except works from inside
3614                        bi,bj loop
3615      mdsio_writelocal - same as mdsio_writetile except works for local
3616                         arrays
3617      write_local_r? - higher-level wrapper for mdsio_writelocal
3618      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3619      Example given at end of mom_vecinv.F that dumps some local arrays.
3620    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3621      control flux-form versus vector invariant code.
3622      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3623      or genmake -DISABLE ...
3624    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3625      (additional storing is now needed for case vecinv;
3626      currently nothing implemented to switch this storing off
3627      in case fluxform is used since no CPP flag available).
3628    
3629    checkpoint40pre7
3630    o bug fix in dynamics.F
3631      calc_viscosity called before k=1,Nr loop.
3632    o added some #ifdef's ALLOW_PASSIVE_TRACER
3633    o cleaned initialisations in ctrl_map_ini
3634      related to TAF
3635    
3636    checkpoint40pre6
3637    o split dynamics into thermodynamics & dynamics
3638    o corresponding split of calc_diffusivity into
3639      calc_diffusivity, calc_viscosity
3640      (kpp_calc_diff, kpp_calc_visc).
3641    o Added diffkr, kapgm to control variables
3642    o bug fix in gmredi_slope_limit for ldd97
3643    
3644    checkpoint40pre5
3645    o proper initialization of Adams-Bashforth time stepping
3646      + uses forward step for very first step of model (iter=0)
3647    o re-generated *all* output since almost all output is modified by this
3648      change (sorry but we've been putting this one off for about 2 years)
3649      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3650        *not* regenerated since they are already out of date and I don't
3651        want to create the impression that they are suddenly working.
3652    o removed KAP stuff for DEC's
3653    o modified/added many .cvsignore files in */code and */input
3654    o added new expt "solid-body.cs-32x32x1"
3655      + this uses an alternative form of ini_curvilinear_grid.F which
3656        is not necessarily any better than the current one...
3657    
3658    checkpoint40pre4
3659    o added re-initialisations of utrans,vtrans,rtrans in
3660      calc_common_factors which are crucial for TAF.
3661    o extended iMin,jMin range for calc_common_factors,
3662      calc_diffusivity
3663    o added option ALLOW_PASSIVE_TRACER
3664    o a few minor updates and fixes
3665    
3666    checkpoint40pre3
3667    o created calc_gtr1.F for gad package
3668    o split the_main_loop and re-introduced forward_step
3669    o some recomputations of nIter0 for TAMC
3670    
3671    checkpoint40pre2
3672    o Updated to latest branch of AJA, JMC
3673    o Added gradient check package
3674    o Added routines for passive tracer handling
3675    o Added carbon sequestration sensitivity experiment
3676    
3677    checkpoint39
3678     o Modifications and fixes to support TAMC
3679       (mainly missing or wrong directives)
3680     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3681       in addummy_in_stepping
3682     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3683     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3684     o Included following packages:
3685       cal: calendar
3686       exf: external forcing
3687       ecco: essential routines to control use of cal, exf
3688             (NB: this is not the full ECCO environment)
3689     o disabled some packages by default in genmake
3690    
3691    checkpoint38
3692     o see notes_c37_adj.txt
3693     o corrected wrong layer index in external_forcing_t
3694     o replaced the_main_loop/forward_step by the_main_loop
3695     o removed forceoutput from write_state
3696       (replaced criteria for initial/final state)
3697     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3698    
3699    checkpoint37
3700     o mdsio.F routine split and packaged in pkg/mdsio
3701       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3702        used unless genmake -disable=mdsio)
3703     o allow a more precise surface-geopotential gradient for the atmosphere
3704       taking into account the change in space of Alpha (=1/rho) at the surface.
3705     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3706       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3707     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3708       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3709       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3710     o Time-Average diagnostics defined as a pseudo package "timeave".
3711     o pickup files : old pickup (before c35) did not work with new code (c35
3712       and after) unless activating 2 commented lines in initialise-varia.
3713     o Non-Hydrostatic pickup file Pb fixed.
3714     o bug with Rigid-lid version (since c35) fixed.  
3715    
3716    checkpoint36
3717     o implement Crank-Nickelson barotropic time-stepping
3718     o recover Time-Average diagnostics
3719     o fix Pb in checkpoint (PR#19)
3720     o AIM become a standard package ; clean unused CPP_kees
3721    
3722    checkpoint35
3723     o subtantial rewrite of dynamics.f
3724     o allows staggered time-stepping
3725     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3726     o added bottom drag (linear + quadratic)
3727    
3728    checkpoint34
3729     o Modified exchange routines for correct reverse simulation.
3730     o Added verification output to comply with bug fix in impldiff.F
3731       as of c33 (exp2, natl_box).
3732     o Corrected store directives in dynamics.F
3733     o Corrected array boundaries in impldiff.F
3734     o Corrected array dimensions in gmredi.
3735       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3736     o Added routine GLOBAL_SUM_INT to global_sum.F
3737     o Added mdsio_gl.F for ECCO purposes.
3738    
3739  checkpoint33  checkpoint33
3740   o Fixed bug in lower BC in impldiff.F   o Fixed bug in lower BC in impldiff.F
3741   o Fixed confusion about units of forcing arrays in FFIELDS.h   o Fixed confusion about units of forcing arrays in FFIELDS.h

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