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revision 1.14 by cnh, Tue Sep 29 18:57:53 1998 UTC revision 1.929 by dimitri, Fri Dec 21 01:40:28 2007 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 pkg/obcs and pkg/seaice:
8      - do not set uice and vice to zero when OB*icefile are unspecified
9      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
10      - moved seaice tracer obcs after call to seaice_growth
11    o pkg/salt_plume: added various options for salt plume depth
12      criterion and for vertical distribution of the salt
13    
14    checkpoint59l
15    o pkg/ptracers: new version of ptracers pickup:
16      read meta file and write only fields which are needed to restart.
17      ( same logic as main pickup file ; also using pickupStrictlyMatch )
18    o pkg/seaice:
19      - add timescale for melting due to warm mixed layer as a means of
20        setting SEAICE_availHeatFrac more conveniently
21      - add a CPP-flag/runtime parameter check for flooding algorithm
22      - reformulated availHeat in seaice_growth.F to be independent of AREA
23    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
24      unit changes
25    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
26    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
27      SX vector computer.
28    o pkg/seaice:
29      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
30        seaice forcing fields can now be read only through pkg/exf
31      - removed some unused halos
32    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
33    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
34      or U/VICE from U/VWIND before computing U/VSTRESS
35    
36    checkpoint59k
37    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
38      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
39    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
40      all experiments pass when compile with un-initialised var. checking option.
41    o added pkg/salt_plume
42    o script to test restart (for now, in MITgcm_contrib/jmc_script)
43    o pkg/seaice: new read/write pickup version.
44      read meta file and write only fields which are needed to restart.
45      ( same logic as main pickup file ; also using pickupStrictlyMatch )
46    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
47    o lab_sea.hb87: modify the domain & update output.hb87.txt :
48      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
49      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
50      process. Fixed here by closing the domain at the Northern boundary.
51    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
52    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
53      a set of consecutive levels in/from a 3-D array.
54    o pkg/ptracers:
55      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
56      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
57    
58    checkpoint59j
59    o in pkgs: dic, obcs, offline, rbcs:
60      standard way to compute coeff. for time interpolation between 2 time reccords
61      which retains full precision (& make results less dependent on compiler).
62      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
63    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
64      packages instead of reading ice cover and wind speed separately
65    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
66     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
67      to allow to compile customized code before the update)
68    o cleaning-up:
69      - fix CPP instruction syntax in pkg/obcs
70      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
71        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
72      - fix some threads issue in IO parts.
73    o pkg/dic:
74      - add tons of "_d 0" (--> much better testreports !)
75       and then update outputs of tutorial_global_oce_biogeo
76    o pkg/mom_fluxform:
77      add a special version of momentum advection intended to conserve momentum
78      next to a bathymetry step or a coastline edge. (default = off = #undef)
79    o new read/write pickup version:
80      - for now, only implemented for main (mdsio) pickup file.
81      - write out only what is needed to restart; merge pickup_nh , pickup_ph
82        and main pickup together.
83      - read meta file; read only what is needed to restart; stop if a field
84        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
85        if it make sense (even if the restart is not perfect).
86      - if no meta file, assume that pickup to read corresponds exactly to
87        a pickup that would currently be written.
88      - read pickup written in the old format (until checkpoint59i) if it
89        recognizes an old meta file (no field-list).
90      - add a meta file in exp. which starts from a pickup: 2 cases:
91        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
92         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
93        b) a meta file describing the content of the associated pickup file
94         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
95    o pkg/mdsio & pkg/rw:
96      - new routine to read a meta file ; new set of routine to read
97        Multiple-fields file (with meta file).
98    o added open boundary conditions capability for seaice
99        HSNOW, HSALT, UICE, and VICE
100    
101    checkpoint59i
102    o adjoint:
103      * fix multiDimAdvection adjoint
104        (partial recomputation problem by TAF for fVerT(:,:,kDown)
105        and comlev1 size definition (maxpass vs. max. number of tracers)
106      * verification/global_ocean.90x45x15 adjoint now tests
107        NLFS and multiDimAdvection using DST3 (=30)
108      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
109    o pkg/kpp: add "_d 0" to real constant (if missing);
110      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
111      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
112    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
113      for internal parameters related to restart process (formerly from PARAMS.h)
114      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
115    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
116      as argument. (only atm2d & obcs write_pickup have not yet been updated)
117    o pkg/monitor:
118      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
119      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
120      - account for deep Atmosphere factor and density factor (anelastic)
121    o added open boundary conditions capability for seaice HEFF and AREA
122    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
123      thermodynamics
124      - requires a little reorganization, which affects the testreport results
125        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
126        so that now the conservative form is tested
127      - add a few comments
128    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
129    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
130    o add new diagnostics to seaice: advective, diffusive fluxes (only for
131      multidim-advection, for scheme 2 they are not filled) and transports,
132      thermodynamic growth rates
133    o change units of EmPmR (inside the code, + within coupling interface)
134      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
135      Affects results @ truncation level (cg2d match) and update output of
136       experiments: lab_sea(6), global_ocean.90x40x15(10),
137      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
138      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
139      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
140      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
141    
142    checkpoint59h
143    o pkg/exf:
144      - improve vectorization by moving if-statement out of loops in
145        exf_mapfields, exf_radiation
146      - exf_bulkformulae.F: introduce 2D fields and vectorize code
147    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
148    o testreport:
149      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
150        monitor & update offline_exf_seaice exp. output.
151      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
152    o pkg/seaice:
153      - bug fix in the evp solver: boundary conditions were affected be
154        masking of zMax/zMin (changes results)
155      - minor bug fix in boundary conditions in seaice_calc_strainrates
156        (changes results for no_slip)
157      - seaice_lsr.F: make interpolation of eta dependent on boundaries
158      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
159      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
160        stress formulation and no-slip boundary conditions
161    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
162      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
163    o pkg/seaice: a first HSALT time stepping equation has been checked in
164    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
165      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
166      without requiring DO-IF statements
167    o pkg/thsice:
168      use continuous power-law function for partition of energy between lateral
169      melting/freezing and thinning/thickening ; old code using step function
170      still available with #undef THSICE_FRACEN_POWERLAW
171      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
172    o testreport: change AD testing : check against results/output_adm.txt
173      using same scripts as for forward test.
174    
175    checkpoint59g
176    o adjoint testing: in preparation for changing testreport:
177      - output format: cost and grad written on separated lines
178      - ad output results in directory "results" (instead of "results_ad")
179    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
180    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
181    o pkg/ecco: allow user defined cost function contributions
182    o testreport:
183      Allow to choose (per experiment) the list of tested output variables
184       and the main variable (used to issue a pass/FAIL ) ;
185      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
186      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
187      Also modify printing of summary:
188       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
189       b) echo the list of tested variables in the individual summary.txt of
190          each experiment.
191    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
192      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
193      (but still depend on the tile decompostion of the domain).
194    o pkg/seaice: change a discretization detail to make the B-grid code
195      "more symmetric". This change is likely to remove all "ridges/leads" that
196      where quasi-aligned with the grid in B-grid solutions. It may also be
197      the solution to the stress coupling issues with the B-grid.
198    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
199      remove .cvsignore from input dir. (since testreport no longer run here).
200    o pkg/thsice:
201     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
202     - fix reshaping of sea-ice just after advection:
203       melt all the ice only if ice-volume is too small.
204     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
205       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
206     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
207    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
208      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
209    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
210      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
211      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
212      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
213      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
214      -> update output.txt
215    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
216     this affects truncation error: -> update output.txt of exp:
217      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
218      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
219    
220    checkpoint59f
221    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
222    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
223      a bounded range (in forward mode)
224    o pkg/ecco, ctrl, autodiff and mom_common:
225     internal parameter controls, completements of implementations
226    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
227    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
228      (not seem any difference in testing results).
229    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
230       at face corners.
231    o pkg/generic_advdiff:
232     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
233      loop range indices for computing vertical advection tendency
234      and do the calculation in the interior only (no overlap) ;
235      for now, only implemented for SOM advection (to save CPU time).
236     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
237    o exch2 adjoint
238      First set of changes:
239      - add exch2 hand-written adjoint templates
240      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
241        This will require cleanup in pkg/autodiff/*.F
242        (changed routines currently kept separate in verif. code/)
243      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
244        that used to hide exch2 or cubed-sphere specific code
245        (commented via 'cph-exch2')
246    o pkg/seaice
247      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
248    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
249       output of global_ocean.cs32x15.thsice .
250    
251    checkpoint59e
252    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
253      for B-grid vector (not yet tested) and C-grid vector (<- only used
254      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
255    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
256      (#ifdef ALLOW_SALT_PLUME)
257    o gather_2d/scatter_2d: removed halo regions
258    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
259      scheme and the corresponding test case (under front_relax dir). For now,
260      only available with Skew-flux form and not yet tested in realistic set-up.
261      adjoint: store directives updated, but gradient checks deteriorated,
262      so maybe GM/Redi adjoint is now broken.
263    o seaice adjoint
264      * add AREA, HEFF, HSNOW as control variable
265        (should not change lab_sea results)
266      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
267    o pkg/seaice:
268      * added computation of saltFlux in seaice_growth;
269        For time being, sea ice salinity is assumed constant
270        contribution of snow flooding to freshening of sea ice is neglected.
271        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
272        defaults to 0.0 in order to maintain backward compatibility.
273        Typical values for SEAICE_salinity are 4 to 10 g/kg.
274      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
275      * added SEAICE_availHeatFrac, which specifies fraction of surface level
276        heat content used to melt or grow ice
277      * commented out cap of HICE: it helps keep ice thinner
278      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
279      * applied OBCS T/S mask to HEFFM sea ice mask
280    
281    checkpoint59d
282    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
283     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
284     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
285    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
286     and change default value of parameter "GM_Small_Number";
287     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
288       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
289       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
290    o pkg/ecco: cost function when applying pkg/smooth to controls
291    o pkg/ctrl: add forcingPrecond run time parameter
292    o pkg/seaice:
293     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
294     - fix bug in metric terms of u-equation in LSR solver (implicit part),
295       changes verification/lab_sea
296     - rearrange implicit part of u-equation in LSR solver to make it easier to
297       read, understand, and debug. This causes changes at the truncation level.
298     - fix (serious) bug in the boundary conditions (sign error in the implicit
299       part) of the LSR solver. Changes all LSR results.
300     - fixed problem with HSNOW initialization to avoid thick snow when AREA
301       is initilized with small values - does not change lab_sea results.
302     - added HsnowFile initialization capability
303    o pkg/smooth: addition to model/src and pkg/ctrl so allow
304     initialization of pkg/smooth and application to control vector
305    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
306    o dependencies: pkg/profiles requires pkg/cal
307    o pkg/profiles:
308     - added option ALLOW_PROFILES_GENERICGRID
309         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
310         that interpolation information (grid points and coefficients) is provided
311         within the netcdf input files.
312         -> sample matlab scripts can be found in MITgcm_contrib/gael
313         that allow you to prepare netcdf input files.
314     - also modified: cleaner include statements, cleaner error print statements,
315       cleaner stops when error, and more tests of the netcdf input files consistency.
316    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
317    o pkg/seaice:
318     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
319       requires a new routine: seaice_diagnostics_fill.F
320     - make sure that seaice does not move if not forced (pressure replacement
321       method, Hibler and Ip, 1995), changes results
322     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
323     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
324       It is turned off by default (=-1.), because it changes the results.
325     - make it possible to read AREA from a file, too.
326    
327    checkpoint59c
328    o add S/R and diagnostics for oceanic mixed-layer depth
329    o move GMRedi call after all vertical mixing schemes (including KPP)
330    o pkg/thsice:
331     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
332      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
333    o pkg/obcs:
334     - bug fix for balance code
335    o pkg/seaice:
336      - allow values of SEAICE_elasticParm > 1
337      - add new parameter SEAICE_evpTauRelax as an alternative
338        to SEAICE_elasticParm
339      - make lsr boundary conditions free slip (by default), changes result
340      - add code for no slip boundary conditions for lsr
341      - set minimum of zeta to zero (and not 4e8) (changes results)
342      - add a cap on AREA after advecting AREA if seaice_growth is not called
343    o change calculation of Visbeck K:
344      - no longer depend on tapering scheme; instead, compute slope (limited
345        by GM_maxSlope). this is equivalent to what was comuted before with
346        clipping or linear tappering.
347      - fix vertical averaging (wrong by 1/2 level)
348      - leave the old version (but will not be maintained) within
349        #ifdef OLD_VISBECK_CALC / #endif
350      - update output of exp. ideal_2D_oce
351    o change error catch in calc_r_star to improve vectorization
352    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
353      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
354    o adjoint:
355      Re-organized adjoint checkpointing according to Matt Mazloff
356      (but with modifs/completions/cleanups)
357      Storing is now bundled into large arrays to optimized I/O
358      (and second step in cleanup of the_main_loop)
359    
360    checkpoint59b
361    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
362      - export/import (between ocean & coupler) fields needed for ocean DIC.
363    o pkg/seaice:
364      - get rid of three more exchanges seaice_calc_viscosities (required
365        different loop boundaries in seaice_lsr and seaice_ocean_stress)
366      - bug fix in seaice_ocean_stress (update of lab_sea required)
367      - reduce loop boundaries to necessary minimum also in seaice_evp
368      - go back to the old way of computing deltaC/Z as the adjoint likes that
369        better
370    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
371      passive tracer to an Age Tracer) + update output.txt
372    o pkg/exf:
373      - implement A-grid / C-grid selection for wind-stress input files.
374      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
375      for now, in exf_bulk_largeyeager04.F only :
376      - change implementation for case where windspeed + 2. components wind-stress
377        are read-in. AND use rhoConstFresh to convert evap.
378    o pkg/seaice:
379      - use correct EXCH_UV for wind-forcing (on A-grid).
380      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
381        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
382    o pkg/exf:
383      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
384      EXF_INTERPOLATION:
385      - merge global_with_exf/code version of exf_interp_read.F
386        to the main code ;
387      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
388        reading the file ; Important: This options needs to be defined to recover
389        previous code.
390        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
391      - no longer loose real*8 precision along the way when using exf_iprec=64.
392    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
393      - change discretisation of evp-solver in order to avoid another exchange
394        (changes lab_sea) and clean up a little
395      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
396        help the adjoint (this also changes the results slightly)
397      - add a few "_d 0" where they had been missing in seaice_evp.F
398      - cleaning up: remove unused seaice_calc_rhs.F
399    o pkg/exf: some cleaning-up:
400      - change various "constants" into runtime parameters
401      - cleaned-up Large&Yeager04 routine which should eventually
402        replace exf_bulkformulae.F (changed names of S/R and CPP)
403        and merged various ALLOW_ATM_WIND options
404     only used with thsice pkg (in thsice_get_exf.F):
405      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
406        which are used when useStabilityFct_overIce=TRUE (= the default)
407      - change default values of ice & snow emissivity and scale downward LW
408        by ice & snow emissivity.
409    o pkg/thsice:
410     fix few little problems, in thsice_calc_thickn.F:
411      - growth vertically (and not laterally) if iceFrac == iceMaskMax
412      - melt only laterally if hIce < hThinIce (as the comments say)
413      and in thsice_extend.F:
414      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
415      - start to form ice as soon as the minimum ice-volume is reachable.
416     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
417      and cpl_aim+ocn
418    o pkg/kpp
419     - move computation of surface related input fields to KPP into a new
420       subroutine kpp_forcing_surf.F
421     - remove wrong (within bi,bj loops) EXCH calls.
422     - little cleaning (add argument myThid in last position, cvs header ...)
423     - for now, fix conservation problem by exchanging KPPviscAz (may not
424       be the best fix)
425    o pkg/seaice
426     - check for inconsistent evp parameter/cpp-flag combination
427     - remove leftover errIO flat for obsolete name list error handling
428    o OpenAD
429     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
430    
431    checkpoint59a
432    o pkg/seaice: some parameter clarifications and a little bit of clean up
433    o pkg/thsice: rename run-time parameters:
434       himin       -> hIceMin
435       himin0      -> hThinIce
436       hihig       -> hThickIce
437       i0          -> i0swFrac
438       transCoef   -> bMeltCoef
439       frac_energy -> fracMelting
440      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
441       with default values (for now) that do not change the results.
442      remove old version of thsice vars advection in pkg/seaice.
443    o in FFIELDS.h:
444      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
445      - make pLoad & sIceLoad always available (but still only used if
446         ATMOSPHERIC_LOADING is #define).
447    o pkg/kpp: replaced _KPP_RL with _RL
448    o bug fixes for vertical diffusivity computations when both KPP and
449        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
450        are no longer updating the vertical diffusivity array
451        (passed as argument) but are (re-) setting those arrays.
452    o pkg/seaice: fix bug in evp solver, while doing that
453      - change (improve?) discretization of stress computations for both
454        cgrid-lsr and evp solver
455      - add a new routine to compute strain rates
456      - the above changes lab_sea results
457      - add no slip conditions for evp solver (off by default), lsr-version
458        may follow
459      - fix exchange for shear at Z-points (does not change lab_sea)
460      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
461        (to force the user to pick a time step since there is not "safe" way
462        of choosing it)
463      - add principal stress diagnostics
464      - rearrange fields for evp a little to avoid having to call a: too many
465        exchanges and b: exchanges for stress trensor components which we do
466        not have.
467      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
468        of evp, complete rewrite for lsr case (latter is does not yet work
469        in all cases)
470    o pkg/kpp: add code to have mixing in shelf ice caverns
471      - add myThid to all kpp routines (long overdue)
472    
473    checkpoint59
474    o pkg/exf:
475      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
476        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
477      - move exf header files from lower_case.h to UPPER_CASE.h ;
478        add missing cvs Header & Name
479      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
480      - add namelist param. selectStressGridPosition, exf_monFreq
481      - retire many _CLIM routines, and remove data.exf_clim
482        + params moved to data.exf
483        + climsst, climsss now handled by exf_set_gen, i.e.
484          climss?period=0 refers to constant field,
485          climss?period=-12 to monthly forcing
486      - split up namelists in data.exf
487    o pkg/seaice:
488      - remove seaice_exch and seaice_exch_uv
489      - remove superfluous exchange of theta
490      - add myThid to seaice_budget_ocean/ice
491      - add new interface for atmospheric wind forcing (C-grid only)
492        + new routine
493        + two new field (taux, tauy for stress over ice)
494        + removed one global field (DAIRN) for C-grid case only
495    o pkg/thsise
496      - 2nd set of modifs for thsice adjoint in conjunction with exf
497    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
498    
499    checkpoint58y_post
500    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
501      vertical diffusivity, similar to that in MOM4; turned on using
502      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
503      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
504    o Added capability for 3D specification of background vertical diffusion
505      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
506      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
507      "data" file that contains the 3D vertical diffusivity coefficients.
508    o ice dynamics (pkg/seaice) with thsice thermodynamics:
509      - add code within pkg thsice to advect & diffuse sea-ice fields
510      similar to (and will replace) what has been added in  seaice_advdiff.F,
511      but: - conserving Mass, Heat & Salt.
512           - better when using non-linear advection scheme (not yet fully tested)
513           - can also be used in atmospheric set-up (for now, only the diffusion).
514    
515    checkpoint58x_post
516    o IO option for global-file compact format:
517      - add options when generating topology (utils/exch2/matlab-topology-generator)
518      - add I/O capability (pkg/mdsio).
519      - adapt utils/matlab/rdmds.m to read this format.
520      for now long-line format not yet supported by pkg/mdsio (& exch2).
521    o shelfice: add a few diagnostics
522    
523    checkpoint58w_post
524    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
525      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
526      (and replace horiVertRatio in NH code).
527      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
528                         and tutorial_plume_on_slope (sensitive to truncation)
529    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
530      directly to drive seaice model (C-grid only)
531    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
532     - reintroduce computation of wind from stress,
533     - compute tau (in exf_bulkformulae.F) from windstress averaged to
534       mass points to avoid tau = 0
535     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
536    o rdmnc.m: make it work with "global" files created with gluemnc
537    o rdmnc.m : some improvements in dealing with singleton dimension
538      (tested on all testreport mnc output files).
539    o genmake2: disable pkg/profiles if netcdf test fails.
540    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
541    o move call to cal_readparms up to make calendar parameters/variable available
542      to all packages
543    
544    checkpoint58v_post
545    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
546      useDynP_inEos_Zc tested.
547    o pkg/exf: changes to properly interpolate/mask/scale initial fields
548    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
549      and portions thereof.  See read_cs.txt for description and examples.
550    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
551      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
552      following the great-circle arc between those 2 points.
553    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
554      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
555    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
556     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
557     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
558     - still needs work (not working with some options ; efficiency to improve)
559       and serious testing.
560     - use this scheme for temperature & salinity in 2 advection test exp.:
561       advect_xy & advect_xz, respectively.
562    
563    checkpoint58u_post
564    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
565    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
566    o testreport: add option "-skipdir" to skip some test.
567    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
568      momentum calculation.
569    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
570    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
571      remove checkpoint.F and the_correction_step.F (no longer used);
572      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
573    o add option (linFSConserveTr) to correct for tracer source/sink due to
574      Linear Free surface
575    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
576    o pkg/thsice: fix reading mnc-pickups
577    
578    checkpoint58t_post
579    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
580    o pkg/mdsio:
581     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
582       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
583       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
584     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
585     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
586       either MDS_READ_FIELD or MDS_WRITE_FIELD )
587     - new S/R (to replace MDSWRITEMETA), which allows to write more
588       informations (variable names, time ...) to meta files.
589     - modify rdmds.m to give back the meta file content.
590    o pkg/diagnostics: change vertical interpolation to be safer, and more
591       flexible (define p-levels to interpolate to in data.diagnostics);
592      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
593       diagnostic pointer.
594    o pkg/seaice: more cleaning up of seaice_growth, added many comments
595    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
596    o fix multi-category seaice:
597     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
598       SEAICE_MULTICATEGORY
599     - fix short wave heat flux
600    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
601       and allow to use EVP solver. Change forward lab_sea: test both EVP
602       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
603    o Initial check-in of lab_sea adjoint
604      (very similar to natl_box_adjoint/code_seaice)
605      * used C-grid and EVP solver
606      * used KPP, GM/Redi
607      * uses inAdExact=.TRUE.
608      * gradient checks fail for both ADM and TLM
609        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
610        f.d. gradients actually seem more problematic than ADM, TLM gradients;
611        issue is related to forward mismatch between g77 an ifort
612    o pkg/seaice: overhaul of thermodynamics
613     - growth.F and groatb.F are replaced by new routine seaice_growth.F
614     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
615     - move a few global fields out of SEAICE.h into seaice_growth.F and
616       make them 2D (FICE/QNETO/ ...)
617     - remove FO (it is the same as QNETO)
618     - introduce a few local fields to avoid modifying external fields such
619       as atemp, etc.
620    
621    checkpoint58s_post
622    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
623      changed exf_set_gen.F so that
624        genperiod=0 means input file is one time-constant field and
625        genperiod=-12 means input file contains 12 monthly means
626    o CG2D: use pre-computed solver main-diagonal (stored in common block);
627      this affects truncation error ; generate new output file for exp. which
628      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
629        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
630        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
631        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
632        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
633        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
634    o start implementation of deep-atmosphere and anelastic formulation
635    o verification: remove 2nd copy of input files and use script "prepare_run"
636      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
637    o mom_common/vecinv/fluxform: fix a few initialisation isssues
638    o profiles: fix for multithreaded case
639    
640    o diagnostics: rename few diags:
641      s/'PRESSURE'/'RCENTER '/g
642      s/'TICE    '/'oceFreez'/g
643      s/'TAUX    '/'oceTAUX '/g
644      s/'TAUY    '/'oceTAUY '/g
645      s/'SWFLUX  '/'oceQsw  '/g
646      s/DIFx/DFxE/g
647      s/DIFy/DFyE/g
648      and add few ocean-forcing diagnostics:
649      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
650    o modifications to pkg/seaice/growth.F and budget.F, which change results of
651      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
652      as actual snow thickness.  It now refers everywhere to effective snow
653      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
654    
655    checkpoint58r_post
656    o modifications to pkg/seaice/growth.F, which change results of
657      lab_sea experiment: fixes pertain to melting snow over open water, to
658      masking EVAP under sea ice, and to using the correct AREA variable for
659      computations of EVAP, PRECIP, HSNOW, and GHEFF
660    o add ability to read bathy, salt, and theta using MNC (off by def)
661    o add flooding algorithm and advection of HSNOW for pkg/seaice;
662      both are turned off by default and do no change any results
663    o seaice advection with pkg/thsice: a step toward the use of non-linear
664      advection scheme, but #ifdef or commented out for now (requires more EXCH).
665    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
666      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
667      in natl_box (affects results @ truncation level: update output.txt)
668    o multi-threading and IO:
669      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
670      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
671        (needed to work with SingleCpuIO): tested in all verif. exp.
672    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
673      affects the results (but none of the verification test uses this scheme).
674    o Adding some pkg/diagnostics capability to pkg/seaice
675      (will certainly be subject to changes)
676    o ctrl: adding new control variables:
677      lwflux, lwdown, evap, snowprecip, apressure, runoff
678    
679    checkpoint58q_post
680    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
681      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
682      high_res_cube configuration by 4% on Columbia.
683    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
684      add (in global_with_exf/code) a version of EXF_INTERP_READ without
685      dynamical allocation (seems to work in multi-threaded).
686    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
687      single CPU io) so that TAF does not have to see EESUPPORT.h
688    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
689    
690    checkpoint58p_post
691    o obcs: stop if obcs is used with useCDscheme = .true.
692    o shelfice:
693     - fix a sign error so that no slip at shelfice interface works
694     - remove stop for combination non-hydrostatic code and shelfice. That does
695       not mean, that the results are correct, but at least they are numerically
696       stable
697    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
698    o added adjoint exch routined for all exch*3d* routines
699      and updated flow directives
700    
701    checkpoint58o_post
702    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
703      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
704    o change controling S/R for writing pickup file (new S/R do_write_pickup)
705      and clean-up reading/writing of pickup files.
706    o fix local version of read/write pickup (NH part) in rotating_tank/code
707    o simplify EXCH interface:
708     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
709     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
710    o added the regrid package
711    o shelfice:
712     - add a simple boundary layer scheme to reduce noise
713     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
714    
715    checkpoint58n_post
716    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
717       local variable (not in common block).
718    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
719      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
720      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
721        to work with SingleCpuIO.
722    o add "_d 0" to real constant of pkg/cfc subroutines ;
723       update exp. cfc_exemple & tutorial_cfc_offline output files.
724    o multi-threading and IO:
725      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
726        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
727      - barrier before and after reading.
728      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
729      - avoid using MDS_WRITELOCAL for LAND pkg output.
730      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
731        common-block variables ; Allows multi-threading with master-thread IO.
732    o change default MAX_NO_THREADS from 32 to 4 ;
733      and stop cleanly when MAX_NO_THREADS is too small.
734    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
735    
736    checkpoint58m_post
737    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
738       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
739    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
740       keep global_ocean.90x40x15 (for AD testing) with former secondary test
741       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
742    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
743        add MITgcm_tutorials (= code + all the tutorials)
744    o ecco, option to compute cost for total ssh (mean+anom)
745    o consistent with addition of ptracer and ssh in pkg/profiles
746    o profiles: adding ptracer and ssh
747    o testreport: change multi-test output-file name
748      (from output.txt.{name} to output.{name}.txt)
749    o profiles: now ok for mutli-tiles case
750    o seaice: add 4 parameters for different advection schemes for area,
751      (effective) seaice thickness, enthalphy, and snow height. Their default
752      is the standard parameter SEAICEadvScheme
753    o calc_gw:
754     - add cosFacU in zonal viscous flux (harmonic.visc.).
755     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
756       of tutorial_plume_on_slope.
757    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
758    o calc_gw: true flux-form, account for horizontal grid spacing.
759      update rotating_tank results, but not plume_on_slope (affected at
760      truncation level, 11 digits).
761    
762    checkpoint58l_post
763    o calc_gw:
764     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
765     - remove side-drag for now (need to fix it); update plume_on_slope results.
766     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
767    o commit code to make SST/SSS weights spatially variable
768      (based on either variable in-situ or variable initial T/S weights)
769    o pkg/ecco:
770      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
771        now based on horizontally varying weights wthetaLev, wsaltLev
772      * cost_averagesflags now returns year indices in addition to day, month
773      * sflux balance is performed on annual basis
774        (sflxumm, sfluxmm2, bal_sfluxmm)
775      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
776        including separate counting and multipliers
777    o pkg/rbcs
778      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
779    
780    checkpoint58k_post
781    o testreport:
782     - always build in dir. "build" (if not there, mkdir build instead of building
783       & running in input)
784     - run in dir run (if it exists), in build otherwise.
785     - call prepare_run (if input/prepare_run exists)
786     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
787    o pkg/exf modifications to interpolation and rotation routines for more
788       reasonable treatment of North Pole singularity: for tracers North Pole
789       value is set to northernmost zonal-mean value, for zonal velocity it is
790       set to zero, and for meridional velocity it is set to northernmost value.
791    o pkg/exf/exf_check_range.F
792     - add tile index to diagnostics and move stop statement to the very
793       end of the routine.
794    o pkg/diagnostics: (diagnostics_main_init.F)
795      define title of isomorphic variables according to the current config.
796    o pkg/thsice with pkg/seaice dynamics:
797    - fix domain of computation (interior only, required for exf) and do exchanges
798    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
799    o towards a standard way of dealing with multi-threading in MONITOR
800      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
801    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
802       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
803    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
804    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
805    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
806       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
807    o tracer advection:
808     - clean-up and simplify calc_common_factors.F
809     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
810       advection subroutine (but still not used within DST advection S/R)
811    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
812    
813    checkpoint58j_post
814    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
815      from file (collects calls previously in FORWARD_STEP)
816    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
817    o adjoint store dir. adjusted accordingly
818    o genmake2
819      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
820    
821    checkpoint58i_post
822    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
823      on wind stress (SEAICEstressFactor defaults to 1.)
824    o Total number of Timers is finite (<=40): comment out 2 non-essential one
825      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
826    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
827      on CS-grid: no longer loosing mass.
828    o exf & curvilinear-grid: no longer modify longitude xC & xG.
829    o pkg/ggl90: fix sloppy output and fix a bug
830    o pkg/seaice: added SEAICEuseEVPpickup parameter
831      - Set to false in order to start EVP solver with
832        non-EVP pickup files when using SEAICEuseEVP
833      - fix sign error in diffusion in seaice_calc_rhs
834    
835    checkpoint58h_post
836    * Modifications for bottom topography control
837      o replace hFacC by _hFacC at various places
838      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
839      o add non-self-adjoint cg2d_nsa
840      o update autodiff support routines
841      o re-initialise hfac after ctrl_depth_ini
842      o works for 5x5 box, doesnt work for global_ocean.90x40x15
843    * Adding verification for 5x5 box (4-layer) bottom topography control
844    
845    checkpoint58g_post
846    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
847       used for mean seasonal cycle, mean diurnal cycle); add an example
848       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
849    o pkg/ggl90:
850      - add parameter (minimum surface kinetic energy)
851      - fix bug (avoiding division by zero)
852    o couple pkg/thsice to pkg/seaice:
853      - modify advection in seaice to accomodate new scalar fields to be advected
854      - only muliDimAdection scheme work with seaice/thsice
855      - mapping of thsice-variables to seaice-variables, back and forth
856      - does not break the verification experiments, but does not give the
857        desired results either
858    o pkg/seaice
859      - make (default) second order advection a bit less confusing?
860    
861    checkpoint58f_post
862    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
863      to pkg/seaice):
864      - new routines thsice_map_exf and thsice_get_exf provide the interface
865      - add an additional formal parameter to thsice_solve4temp
866    o pkg/exf:
867      - add new fields wspeed, snowprecip (to be able to couple to thsice)
868      - correct Stefan-Boltzmann constant
869      - new parameter for longwave surface emittance
870      - separate some stuff from exf_bulkformulae into new routines  
871        exf_radiation, exf_wind
872      - add new parameters and constants: longwave emissivity for ocean, ice
873        and snow, evaporation parameters over ice
874      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
875        either wind from stress or stress from wind
876    o pkg/thSIce:
877    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
878    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
879       and THSICE_CALC_THICKN
880    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
881    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
882      to make debugging easier.
883    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
884    o pkg/bulk_force:
885      - clean-up comments and parameters ;
886      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
887    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
888      generate new output for test-experiment: aim.5l_cs.thSI
889    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
890      testreport accordingly
891    
892    checkpoint58e_post
893    o SEAICE_CGRID adjoint done
894    o R_STAR adjoint implemented.
895      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
896      * need to sort out init. of h0facc, etc.
897    o Make pkg/profile fully independent of ecco,cost, etc. stuff
898      to be able to use it in pure forward.
899    
900    checkpoint58d_post
901    o upgrade simple test-experiment to tutorial example:
902     step.1: duplicate the experiment and (step.2) will remove the old copy.
903      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
904      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
905      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
906      tutorial_global_oce_biogeo    <- copy of dic_example
907      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
908      tutorial_plume_on_slope       <- copy of plume_on_slope
909      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
910      tutorial_global_oce_optim     <- empty for now (David ?)
911      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
912     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
913    o correct a sign problem in cost_scat.F
914    o obcs and ptracers: fix boundary conditions for advections schemes
915      with larger stencil
916    o thsice adjoint: start
917    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
918      completeness
919    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
920      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
921    o ptracers adjoint:
922      * avoid extensive recomputatations
923      * fix missing re-init. of gptr (missed by TAF)
924    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
925      me to turn off the excessive output to STDOUT that this package produces
926    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
927      and add those terms in Vector-Invariant formulation.
928    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
929      if the control period (xx_hfluxperiod etc) is 0
930    o in profiles pkg, clean routines and fix details
931    o in ecco pkg, reading ssh data:
932      fix problem in case the model does not start at iter0=0
933    o fix mnc-pickup/restart for ptracers
934    o new package prifiles:
935      code to compute profile-based cost by Gael Forget
936      (modifs in ecco, ctrl, autodiff)
937    o Benign bug fix in initialization (spotted by M. Mazloff) of
938      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
939    
940    checkpoint58c_post
941    o adjoint: finish NLFS adjoint and provide reference output in
942      verification/global_ocean.90x40x15/results_ad_nlfs
943    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
944      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
945      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
946      with SEAICE_CGRID defined.
947    o move calendarDumps from "data" to "data.cal" and clean-up the code
948      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
949    o add useEXF & useCAL flags (for now, set in hard-coded way)
950    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
951      (were missing in NH mode, and wrong in quasihydrostatic mode).
952      waiting for Chris updated version of calc_gw to add those CALLs.
953    o fix bug in quasihydrostatic S/R ;
954      add a test for this option: global_ocean.90x40x15.qshyd
955    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
956      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
957    o add on/off flag useOffLine for package OFFLINE
958    o seaice:
959      - modify advection so that it works also on the C-grid
960      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
961        problem in multi-tile runs with C-grid
962      - add flags for clipping ice velocities and/or masking solver forcing
963      - fix drag (ocean on ice) formulation and a bug that caused noise in the
964        C-grid solver
965      - added a few comments to seaice_diffusion.F
966      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
967        are now exclusive)
968      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
969        required re-ordering the code a little:
970       + make DAIRN global variable (defined in SEAICE)
971       + move computation of the viscosities eta and zeta into a new separate
972         routine (because I need to recompute them in seaice_ocean_stress.F)
973    
974    checkpoint58b_post
975    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
976      update output.txt of exp. aim.5l_cs.thSI
977    o various mnc cleanups and improvements:
978      + shrink lookup tables by factor of ~4
979      + better error reporting when running out of lookup space
980      + able to handle longer path/file names (up to 500 chars)
981    o adjoint:
982      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
983      - TBD: "hidden" mom_vecinv recomp. in dynamics
984    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
985     (allow to differentiate between forcing components using new integer flags:
986      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
987     and add new flag to put Dissipation tendency out of Adams-Bashforth.
988    o ecco
989      - enable trend removal from SSH anomaly obs.
990    o adjoint
991      - a fix for PmEpR when #undef EXACT_CONSERV
992      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
993      - try to fix "hidden" recomp. in forward_step for NLFS
994        (NLFS seems broken sometimes after I checked it in)
995    o seaice:
996     - add c-grid version of the dynamic solver:
997       + three new routines that are the c-grid substitute lsr, dynsolver
998         and ostres
999       + put a few fields that were local to dynsolver into global common
1000         blocks, so that I can move the computation of stresses etc into
1001         seaice_lsr (saves coding but may break the adjoint).
1002     - replace more hardwired parameters by runtime parameters
1003     - add ice masks that mask the rhs of the implicit solvers where there
1004       is no ice (commented out in seaice_dynsolver, because i am not sure
1005       if this works properly), eventually this should replace the clipping
1006       of ice velocities in seaice_dynsolver to +/-40cm/s.
1007    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1008      include it only where its needed
1009    o move balancing of fluxes before the call of external_forcing_surf
1010    o seaice:
1011      - correct units of turning angles (now they are really in degrees)
1012      - move computation of GWATX/Y out of main routine into dynsolver
1013      - initialize GWATX/Y in seaice_init
1014    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1015      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1016    o seaice: add runtime flags for turning angles (default to zero)
1017    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1018      and trend from exf forcing and ctrl control adjustments
1019    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1020      (since checkpoint57x_post)
1021    o change the default rotation period to 86164.s = the Earth rotation
1022    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1023      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1024    o seaice advection: add code for choosing between the default (2nd order
1025      central differences) and multiDim advection schemes provided by
1026      pkg/generic_advdiff
1027    o seaice:
1028      - removed all references to SEAICE_GRID.h fields from
1029        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1030        (cubed-sphere configuration will change a little)
1031      - grid computations in seaice_init are obsolete now.
1032      - cleaned up code a little so that is easier to read (hopefully).
1033      - added new (better?) discretizations of default advection and diffusion
1034        (turn on with SEAICEuseFluxForm)
1035      - replace 1 in 3d global fields by kSurface in growth.F
1036      
1037    checkpoint58a_post
1038    o seaice:
1039      - bug fix in advect.F
1040    o shelfice:
1041      - separate shelfice load anomaly from pload (breaks with time
1042        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1043        Its default is 0., but it may be computed more cleverly from (unknown)
1044        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1045        done offline. A good approximation of the pressure load anomaly is
1046        necessary to avoid large initial adjustment processes underneath
1047        deep-reaching shelfice.
1048      - small fix in ISOMIP shelfice_thermodynamics
1049      - add more sophisticated thermodynamics of Hellmer (1989), this is
1050        now the default
1051      - give a few constants more intuitive names
1052    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1053      if bulk formulae are used in long integration (especially EmPmR). Turn
1054      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1055      if balancePrintMean, the imbalance that is substracted is printed to
1056      STDOUT.
1057    o fix bug (typo) in obcs_apply_eta.F
1058    o add a new package shelfice which enables us to model the circulation
1059      underneath shelf-ice with draughts of hundreds of meters.
1060     - works
1061     - to do: + include improved thermodynamics
1062              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1063                instead of new field kTopC
1064              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1065                instead of new field R_shelfIce and new code in ini_depth.F
1066                and ini_mask_etc.F?
1067              + adjust vertical mixing schemes?
1068    o seaice pkg:
1069     - add a cpp-flag to include a simple formula for a salinity dependent
1070       freezing point of sea water at the surface
1071     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1072       meridional stresses are now different (and hopefully correct)
1073    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1074       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1075       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1076    o pkg/diagnostics: add options and parameters for regional-statistics
1077       diagnostics ; define regions by reading a region-mask from a file
1078       (might add other options later)
1079    o pkg/bulk_force:
1080     - add option and parameters to use AIM surface-flux formulae.
1081     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1082       others forcing fields (defined in PARM05, parameter file "data") are loaded
1083       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1084     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1085     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1086     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1087       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1088     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1089    
1090    checkpoint58
1091    o add "--embed-source" option to genmake2 which, when the supporting
1092      tools can be compiled (as determined by genmake2) will turn on the
1093      embed_files package which then embeds the entire MITgcm source code
1094      (*.[fFhc] + Makefile) used for the build within the executable
1095      - requested by CNH but off by default
1096      - adds a paltry <9MB to the mitgcmuv executable in most cases
1097      - only writes the output when useEMBEDSRC in eedata is true
1098    o clean up 3-dim. relaxation codes:
1099      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1100      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1101      * Thanks to Tom Haine for testing!
1102    
1103    checkpoint57z_post
1104    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1105      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1106    o fix the pickup behavior for obcs in combination with ptracers
1107    o fix a bug in ptracers_external_fields_load
1108    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1109      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1110    o transfered surface NH pressure to eta field (if exactConserv).
1111    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1112         and update lab_sea output.txt file.
1113    o completing 3-dim. relaxation code: additional term
1114         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1115      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1116      * At compile time, in "EXF_OPTIONS.h" set
1117          #define  ALLOW_CLIMTEMP_RELAXATION
1118          #define  ALLOW_CLIMSALT_RELAXATION
1119      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1120          tauThetaClimRelax3Dim = 15552000.0,
1121          tauSaltClimRelax3Dim  = 15552000.0,
1122      * 3 cases:
1123          1) Use a constant-in-time 3-dim. field
1124          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1125          3) Real-time relax. to time-evolving prescribed field
1126    o Adding Laplacian-type smoothness constraint on
1127      initial and boundary (forcing) controls (ic, bc)
1128      * enable at compile-time via
1129        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1130      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1131      * Absolute scale somewhat unclear so far
1132      * no area weighting was included since no other cost term does so far
1133    
1134    checkpoint57y_post
1135    First step for a NLFS adjoint
1136    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1137    o new init. routines for calc_r_star, calc_surf_dr
1138    o still need to deal with ini_masks_etc
1139    o testreport seemed happy
1140    checkpoint57y_pre
1141    
1142    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1143    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1144    o add new offset feature to offline pkg (plus minor cleanup)
1145    o cfc fixes for final year of integration
1146    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1147      be in GCHEM_OPTIONS).
1148    
1149    checkpoint57x_post
1150    o fix testreport Pb in multiple test experiment.
1151    o cleanup our namelist syntax in verification:
1152      - make it more F95 standards compliant (some work still needed)
1153      - allows the vast majority of our tests to work with gfortran
1154    o Non-Hydrostatic:
1155     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1156     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1157    o Allow to apply AB on T,S rather than on AB(gT,gS):
1158     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1159     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1160       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1161     - need a "clever" read_pickup to restart from the other AB formulation
1162    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1163    o remove some unused variables (reduces number of compiler warnings)
1164    o adjoint
1165      * Disable useVariableViscosity for adjoint for time being
1166        (there are a number of extensive recomputations)
1167      * Initialize certain variables needed for adjoint
1168    
1169    checkpoint57w_post
1170    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1171                 fix the singleCpuIO RS version of MDSWRITEFIELD
1172       and add a WARNING if using globalFiles=T with multi-processors.
1173    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1174      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1175    o tracer advection scheme:
1176      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1177       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1178       was not very convenient).
1179      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1180       (further tests needed for the implicit DST & Flux-Limiter schemes).
1181    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1182      and sRef for convenience, handy, when you want to initialize
1183      ptracers in a large domain with a constant non-zero value. Also,
1184      untangle ptracers_init.F a little.
1185    
1186    checkpoint57v_post
1187    o change dome exp. to use variable viscosity in side-drag terms.
1188    o remove all the files from the cfc_offline test since they are now
1189      incorporated into tutorial_cfc_offline which has been producing
1190      identical results for a few days of testing
1191    o add new parameter: sideDragFactor to enable half-slip-side BC
1192      and change side-drag S/R to use viscosity from mom_calc_visc
1193      (can switch back by setting sideDragFactor=0.); affects results at
1194      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1195       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1196    o vorticity & strain are now computed without masking, to account for
1197      no-slip-side BC in variable viscosity calculation ; mask is applied
1198      anyway later on, before computing advection/coriolis terms.
1199    o modify exp4 to test new obcs support for reading from external files
1200      and for passive tracers
1201    o fix behavior of ptracers_monitor when monitor output is written to a
1202      netcdf-file; still not independent of monitor.F (writes in the same
1203      file).
1204    o change default value of tRef (put a uniform, meaningful value for ocean
1205      & atmos) and initialize sRef (was missing, as Martin mentioned).
1206    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1207      to be proportional to enstrophy dissipation length.  Thus,
1208       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1209      This is now consistent with Smagorinsky and with the manual.
1210    
1211    checkpoint57u_post
1212    o OBCS and PTRACERS: add open boundary support for passive tracers
1213      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1214        OB-values from file; this is not different from the way theta and salinity
1215        are treated
1216      - however, Orlanski-radiation conditions are not supported, and the model
1217        will stop if you use pTracers and Orlanski at the same time.
1218      - beefed up the rountine obcs_external_fields_load: now only those open
1219        boundary values are overwritten with values from files for which there
1220        are really files, otherwise the OB-fields remain untouched. This makes
1221        it possible to use different OBs at different ends of the domain (as
1222        with EXF)
1223    o reduce number of exch calls in shap_filt (s2).
1224    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1225      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1226    
1227    checkpoint57t_post
1228    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1229    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1230      same truncation, independent of the face number: affects affects several
1231      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1232    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1233      note that biharmonic viscosity + no-slip was not tested in any experiment.
1234    o fix bug in non-linear free-surf side-drag ; generate new output for
1235      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1236    o make mnc honor the writeBinaryPrec flag for most kinds of output
1237    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1238    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1239      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1240    o add brackets in multi-terms sum to get same truncation, independent of
1241      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1242      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1243    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1244      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1245      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1246      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1247      Suggested values of viscosity parameters found in mom_calc_visc.
1248      Many new viscosity diagnostics available.
1249    
1250    checkpoint57s_post
1251    o Add clearing-house for viscosity calculations, mom_calc_visc and
1252      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1253      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1254      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1255      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1256      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1257      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1258      ViscAhStrain and viscAhTension are now retired.
1259    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1260    o In response to JMC's bug report, genmake2 now ignores any soft-links
1261      that it finds in the *current* directory when searching for files.
1262      Soft-links found in any other source directories will still work as
1263      they did before.
1264    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1265      a C routine to unlimit the stack size
1266    o mnc-ify pkg/aim snapshot vars
1267    o mnc-ify pkg/land as requested by Daniel
1268    o various changes to mnc including:
1269      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1270      - output can now be grouped so that all files within a group
1271          change the ITER portion of their names in lock-step together
1272      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1273          and works with both EXCH1 and EXCH2 (but needs more testing)
1274      - writing works for all verification test cases w/ g77 on Linux
1275    
1276    checkpoint57r_post
1277    o make MNC variable initialization happen earlier
1278    o add diagnostics for (almost) each term of the momentum Eq.
1279    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1280    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1281    o remove MINIMAL_TAVE_OUTPUT option ;
1282      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1283    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1284      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1285    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1286    o add time-dependent SST, SSS control
1287    o cost terms in ecco/ modularized (new cost_generic.F)
1288    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1289    o new infrastructure for seaice model vs. obs misfits in seaice/
1290      * driver from the_main_loop.F is seaice_cost_driver.F
1291      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1292      * gradient check in Exp. 6a of natl_box_adjoint/
1293    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1294      (see README file)
1295    
1296    checkpoint57q_post
1297    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1298    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1299      - bug was reported by Jean-Michel and Ian Fenty
1300    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1301      update exp. cpl_aim+ocn output.
1302    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1303      Needed for high-res. runs with large global files
1304      to be able to limit tapelev size
1305    o Changed some tests for adjoint:
1306      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1307      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1308      * global_ocean.90x40x15/ back to default 3-level checkpointing
1309    o Modifications to enable scripted COMMON to MODULE conversion
1310      * verification/OpenAD/code/ has necessary scripts and description;
1311      * converts, compiles and runs successfully;
1312    
1313    checkpoint57p_post
1314    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1315    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1316      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1317    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1318    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1319      (was already the case for dissipation with mom_vecinv,
1320       and also the case for grad.PhiHyd when staggered-timeStep)
1321      This will allow to put dissipation out-off the AB time-stepping.
1322     Unfortunately, affects truncation error. Update output of exp. that "fails"
1323      (cg2d matching number) and leave the others for later: front_relax(10),
1324      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1325      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1326    
1327    checkpoint57o_post
1328    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1329      (2) its ready to be documented during the 20050801 DocFest
1330    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1331      for ideal_2D_oce and lab_sea on linux_ia32_g77
1332    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1333      in global1x1_tot/code_seaice_adj to access indices 32, 33
1334      (worth another tag)
1335    
1336    checkpoint57n_post
1337    o adding precip control xx_precip 32
1338    o adding swflux control xx_swflux 33
1339    o Replacing 10 forcing penalty cost routines by 1 generic.
1340    o Implementing partitioning in time-mean and variable adjustment
1341      for atmos. state.
1342    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1343    o in natl_box_adjoint:
1344      * updated exp 1 to 10
1345        (but does not have time-mean vs. variable split results yet)
1346    o updated global1x1/*_seaice_adj/
1347      to incorporate latest changes
1348    o enable useSingleCpuIO for mdsio vector routines
1349      (applies in particular to tapelev I/O)
1350    o removed inefficient K-loop in all active_file*control*.F
1351    
1352    checkpoint57m_post
1353    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1354      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1355    o pkg/exch2: filling of face-corner halo regions is optional
1356      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1357    
1358    checkpoint57l_post
1359     tag before updating tutorials (pre-release-2)
1360    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1361       for output and interpolation of input fields onto model grid)
1362    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1363       Affects results of exp. rotating_tank ; update output.txt.
1364    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1365          and taking the square quantity and/or using a fraction-weight field.
1366    o fix aim_diagnostics_init.F mate numbers.
1367    o add mnc output capability to diagnostics/diagstat and update
1368      our cvsignore files for the ACSII output generated
1369    
1370    checkpoint57k_post
1371    o lab_sea now uses diagnostics package and provides a suite of
1372      new EXF diagnostics output.
1373    
1374    checkpoint57j_post
1375    o exf
1376      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1377        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1378        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1379      * extended diagnostics output
1380        - now includes all EXF variables
1381        - hs, hl moved to common block
1382        - separate S/R for diagnostics, called after ctrl vector is added
1383        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1384        - EXFqnet contains true Qnet (i.e. includes qsw)
1385      * updated verif. lab_sea, global_with_exf
1386      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1387        to ensure that diagnostics sees a true EXFqnet
1388    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1389    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1390      several times with different frequencies.
1391    o mnc-ify the thsice package as requested by Daniel Enderton
1392      - the monitor--MNC output needs work
1393      - many attributes need to be added (most are currently blank)
1394    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1395      - many attributes need to be added (most are currently blank)
1396    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1397    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1398    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1399      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1400         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1401    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1402     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1403    
1404    checkpoint57i_post
1405    o Diagnostics package was changed: diagnostic allocation is now deactivated
1406      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1407    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1408      add 1rst Order upwind vertical Shear.
1409    o add a quick fix for A/B checkpointing in OFFLINE mode
1410    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1411      end-run around the C/Fortran linking horror in eesup/src/timers.F
1412    o added pkg/runclock: allows user to terminate run based on wall clock
1413    o added non-hydrostatic scaling parameter: nh_am2
1414    o pkg/my82: futile attempt to make results compiler-independent by adding
1415      some "_d 0", etc. no effect.
1416    o for mnc output, fill the 'T' coordinate var with myTime and create a
1417      separate 'iter' variable for iteration count
1418    o pkg/diagnostics:
1419      add new capability: output of Global/Regional & per-level statistics ;
1420      tested against monitor output (including land & thSIce) on various exp.
1421    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1422    
1423    checkpoint57h_done
1424      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1425      data.diagnostics, data.gchem, data.ptracers) is done.
1426    
1427    o pkg/diagnostics: prepare for Global/Regional statistics.
1428      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1429    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1430      and rename it: DIFFERENT_MULTIPLE
1431    
1432    checkpoint57h_post
1433    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1434    o pkg/diagnostics: change output frequency, now in seconds (instead
1435      of Nb of iterations). This requires to change data.diagnostics.
1436    checkpoint57h_pre
1437    
1438    o in mnc, let the user create the output dir if both mnc_outdir_date
1439      and mnc_outdir_num are false
1440    o add fflags() to pkg/diagnostics which allows one to specify, on a
1441      per-file basis, the file precision [default behavior is unchanged]
1442    o added diagnostics to pkg/kpp, including computation of mixed layer
1443      depth based on a temperature/density criterion
1444    o updated verification/natl_box to test the new pkg/kpp diagnostics
1445    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1446    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1447    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1448      not mnc -- this mistake was found by JMC and is now corrected
1449    
1450    checkpoint57g_post
1451    o add Adams-Bashforth 3rd Order time stepping:
1452      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1453      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1454    checkpoint57g_pre
1455    
1456    o make lambda[Theta,Salt]ClimRelax spatially varying
1457      (default remains spatially uniform constant based on tau)
1458    o added new control variables
1459      * init. uVel, vVel, etanN
1460      * lambda[Theta,Salt]ClimRelax
1461    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1462      (suggested by G. Forget)
1463    
1464    checkpoint57f_post
1465    o add parameter "baseTime" = model base time = time at iteration zero
1466      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1467      account for baseTime shift
1468    o move Coriolis arrays from PARAMS.h to GRID.h
1469    checkpoint57f_pre
1470    
1471    o mnc-ifying the seaice package
1472    o introduced an alternative length scale calculation for use in the limiting
1473      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1474    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1475    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1476      as well as grad(vort3).  Made it compatible with both approximate form
1477      for the cubed sphere and full form of these gradients.  Added flag
1478      useFullLeith to select between approximate and full form.  
1479    o add "d0" in getcon.F to reduce differences between compilers/platforms
1480      update output.txt of exp. fizhi-gridalt-hs
1481    o change port_rand funtion to allow to set the seed.
1482    o fix obscure MNC bug involving conversion between reals and integers
1483      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1484        new version is now more standards-compliant
1485    o adjoint-related modifications
1486      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1487      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1488      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1489    
1490    checkpoint57e_post
1491    o Adding eddy stress controls a la Ferreira et al.
1492    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1493    
1494    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1495      update output.txt of exp. fizhi-gridalt-hs
1496    o add more "Z" dimensions and associated coordinate vars to MNC
1497    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1498    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1499      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1500      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1501      months and years.  Requires pkg/cal.
1502    o diagnostics: add pickup functionality
1503      - off by default for backwards compatibility
1504      - current version only uses MDSIO -- MNC will be added
1505    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1506    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1507    
1508    checkpoint57d_post
1509    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1510    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1511      output from the diagnostics package
1512    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1513    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1514      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1515    o add coordinate variables to the MNC output from the diagnostics package
1516    o change MNC-flags default value: true when useMNC=TRUE
1517    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1518      the ability (off by default) to read the grid information using MNC
1519    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1520    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1521    o do snap-shot diagnostics at the middle of the time-interval (instead of
1522      at the end).
1523    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1524      new test for AIM with thSIce + slab-ocean
1525    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1526    o move state variable diagnostics to the beginning of the time step ;
1527      (note: still needs some work specially for snap-shot diagnostics)
1528      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1529    
1530    checkpoint57c_post
1531    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1532    o generate new output.txt files on faulks with g77 & the new -ieee option
1533    checkpoint57c_pre
1534    
1535    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1536      update output.txt of exp. global_ocean.90x40x15
1537    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1538      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1539    o add saltFlux(+File) forcing capability with periodicExternalForcing
1540    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1541    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1542    o improvements for the MNC output from DIAGNOSTICS:
1543      - correct handling of the unlimitied dimension
1544      - all dims now have associated coordinate variables
1545      - variables located at U, V, and Corner ("Z") points are now written
1546        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1547        *all* data points are output
1548    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1549    o added pkg/seaice/seaice_monitor.F
1550    o mdsio_readfield.F can now read files visible only to master MPI process.
1551    o pkg/seaice: some test code for ice-modified ocean stress
1552    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1553      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1554      spurious negative numbers for precipitation and humidity.  Will cause
1555      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1556    o pkg/ctrl/
1557      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1558        May be enabled via doPackDiag
1559      *  introduce z-scaling of
1560         + gradient (doZscalePack) and
1561         + control (doZscaleUnpack)
1562    o pkg/mdsio/
1563      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1564      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1565    
1566    checkpoint57b_post
1567    o simplify options in diagnostics_fill arguments (remove weird combinations)
1568    o fix MNC coordinate variables so that they now contain per-face index
1569      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1570      general, EXCH2 grids are only aligned to a "local" coordinate system
1571    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1572    o Implement instantaneous output within pkg diagnostics:
1573      setting a negative frequency in data.diagnostics produces
1574     "snap-shot" output (as opposed to time-average if freq > 0)
1575    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1576      NOTE: change ptracer diagnostics name: use 2 characters to work with
1577            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1578    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1579      becomes the coordinate variable for the 'T' dimension
1580    o add CF-style coordinate variables to MNC
1581      - just a first cut:  numbers are meaningless on the cubesphere and
1582        missing along the T axis but otherwise it works!
1583    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1584    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1585    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1586      this is based directly on what the model compute, so that the content of
1587      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1588    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1589    o clean up build options files for SunOS, in particular
1590      - remove -traditional from xmakedepend
1591      - change -xarch=v9 to -xarch=native for f77
1592      - restore use of make (not gmake)
1593      - add CC=gcc if using g77
1594    o changes per discussion of AM, JMC, & EH3 today:
1595      - move redundant "grid" variables out of "state" -- in preparation of
1596        creating proper CF-style coordinate variables and in recognition
1597        that any/all grid variables can be easily copied (eg. w/NCO) from
1598        the grid files into any of the other NetCDF files
1599      - *always* output grid variables with MDSIO (this will eventually be
1600        changed)
1601      - output MNC grid file if useMNC is true
1602    o every instance of _END_MASTER() has been found and replaced with
1603      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1604      preprocessors
1605    o re-arrange diagnostics pkg initialisation:
1606     - allow each package to extend the available diagnostics list
1607     - add some checking and fix small problems (multi-threaded, ...)
1608     - new S/R diagnostics_fill (replace fill_diagnostics):
1609       look through the short list of active diag. (instead of the long list)
1610       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1611    
1612    checkpoint57a_post
1613    o this set of changes restores TAMC compatibility
1614      tested for global_ocean.90x40x15 adjoint on trough
1615      (what a pain)
1616    
1617    checkpoint57a_pre
1618    o some modifs in tools/build_options for sunos
1619    o call ctrl_pack for ctrl at end for optimcycle=0
1620    
1621    checkpoint57
1622    o add horizontal bi-harmonic viscosity for vertical velocity
1623      - new parameter viscA4W (defaults to viscA4)
1624      - affects only non-hydrostatic code
1625      - to be done: no-slip lateral boundary conditions
1626    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1627    o implement Implicit Vertical advection for pTracers
1628    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1629      (implemented also for implicit vertical diffusion & advection)
1630    o OBCS: extend application of tracer open boundary conditions
1631      to a strip beyond the boundary of width Olx/Oly
1632    o add call monitor to TAF set of required calls (flow directives)
1633      and include in natl_box_adjoint
1634    o untangle a few ifdefs related to cost, ctrl, autodiff
1635      untangel a few ALLOW_ECCO_OPTIMIZATION
1636    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1637      (theta2, salt2 in ecco_cost_weights)
1638    
1639    checkpoint56c_post
1640    o OBCS as control variables
1641      - update ctrl_ad_diff.list, obcs_ad_diff.list
1642      - remove balance of obcs controls from default
1643      - fix index bug nobcs in ctrl_init
1644      - fix dummy fields filen in ctrl_pack
1645      - add dummy weights for obcs
1646    o lsopt: comment out fort.94 output
1647    o optim:
1648      - remove unnecessary header files
1649      - adjusted namelists
1650      - add xerbla.F to Makefile
1651    o exf:
1652      - multiple modifications of exf_check_range
1653      - unit change in exf_init_runoff from [m/year] to [m/s]
1654    o mdsio:
1655      - i/o-vector change debugLevel from debLevA to debLevB
1656    
1657    checkpoint56b_post
1658    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1659      is called from DO_THE_MODEL_IO
1660      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1661      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1662      - clean up PTRACERS_WRITE_TIMEAVE a little
1663    o add another verification experiment that tests both the cfc-pkg and
1664      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1665      reactive tendencies treated inline with regular timestepping
1666    o testreport previously did a lousy job of comparing small numbers, so
1667      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1668      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1669      testreport.
1670    o ptracers_monitor: bug fix for MPI
1671    
1672    checkpoint56a_post
1673    o GCHEM: finish reorganizating the package
1674      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1675        (introduces another 3D-array for each passive tracer, but only if
1676        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1677        gchemTendency is not needed because the timestep is done separately)
1678      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1679      - GCHEM is now---more or less cleanly---separate from PTRACERS
1680      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1681        so clear to me how that should be done in a general way.
1682    o CFC: improve formatting of output in CFC_ATMOS
1683    o PTRACERS:
1684      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1685        that ALL experiments with ptracers enable can be checked. This makes
1686        GCHEM_MONITOR obsolete.
1687      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1688        monitorFreq
1689      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1690    o add PTRACERS (PTR0[1-5]) to testreport output
1691    o exf_check_range:
1692      * default changed to .TRUE.
1693      * will check values for niter0 if debLevA, every timestep if debLevB
1694      * STOP in exf_check_range if 'out of range'
1695      * range chosen generous to allow for potential extema
1696      TBD: a version with stricter range
1697           permitted range would be runtime parameters
1698    o GMredi:
1699      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1700      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1701      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1702    o GCHEM:
1703      - move call to GCHEM_FORCING_SEP, so that it is now called before
1704        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1705      - introduced a useGCHEM runtime flag and applied it everywhere.
1706      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1707        this flag is now only visible within GCHEM-pkg routines.
1708      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1709        be replaced by a 3D array that is computed before thermodynamics; for
1710        this, the tracer ID iTracer had to be included into the parameter list
1711        of ptracers_forcing
1712      - set up forward_step to call gchem_forcing, that will replace
1713        gchem_forcing_int in ptracers_forcing
1714      - cleaning up
1715    o small cleaning of exch2: remove files that are also in eesupp/src
1716    
1717    checkpoint56
1718    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1719    o mnc: cleanup "full" files--fixes out-of-memory problem
1720    o ECCO-GODAE
1721      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1722      * fully merged and updated from SIO code
1723        windstress sign change affects
1724        - exf_inscal_[u/v]stress
1725        - sign of xx_tau[u/v] adjustments
1726        - signs in cost_scat
1727      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1728      * natl_box_adjoint updated and compressed
1729      * 2-level checkpoint switch added
1730        (tested in EXP. 1 of natl_box_adjoint)
1731      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1732    o SVD
1733      * first complete, non-hacked version for SVD calculations
1734      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1735        performed via direct access files admtlm_vector.it????
1736        (via ctrl_[un]pack)
1737      * optimcycle is used for ARPACK iteration counter
1738        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1739      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1740        and add linear transforms where necessary
1741      * controls are initial/final SST, SSS (can be extended; need to check
1742        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1743    o mdsio: filename info to both stderr, stdout
1744    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1745      from sign change
1746    
1747    checkpoint55j_post
1748    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1749      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1750    o add consistent build directories and .cvsignore files to verification
1751    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1752    o make all subroutines 30 or less characters in length for certain older
1753      compilers to work (a thorough search only turns up two routines in
1754      pkg/ptracers)
1755    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1756      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1757    
1758    checkpoint55i_post
1759    o change arrays for total vertical diffusivity (2.D if explicit,
1760      3.D if implicit) ; each ptracer uses its own background value.
1761    o added mnc/NetCDF output capability to ocn_compon_interf
1762      - added bits to verification/cpl_aim+ocn so that it can run on
1763        ITRDA and other clusters without the mpirun "-wd" option
1764    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1765      configuration
1766    o give MNC the ability to create additional files rather than
1767      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1768      - the default is just less than 2GB which is a practical limit
1769        on many systems
1770    o Compute the non-local term using either KPP vertical diffusivity (=default)
1771       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1772    
1773    checkpoint55h_post
1774    o add verification test "vermix"
1775    o remove all the *_ioinc flags and replace with the single global
1776      outputTypesInclusive flag
1777    o allow to set a vertical profile of vertical diffusivity for T & S
1778    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1779    o useMNC moved from data.mnc to data.pkg
1780    
1781    checkpoint55g_post
1782    o Renaming carbon AD experiments to comply with testreport conventions
1783    o Updating adjoint of Held-Suarez hs94.1x64x5
1784    o Fixing directives for non-ECCO forward_step, after ECCO directives
1785      have been fixed to avoid recomp. of do_oceanic_phys
1786      Works well for global_ocean.90x40x15,
1787      but recomp. issue remains for carbon
1788    o Updating adjoint output for natl_box_adjoint after
1789      pkg/ecco has been modified (see taga c55d_post)
1790    
1791    checkpoint55f_post
1792    o rename to timeave_init_fixed
1793    
1794    checkpoint55e_post
1795    o some delicate re-shuffle of store directives to avoid one
1796      extra call of do_oceanic_physics
1797      affects ecco_the_main_loop.F, do_oceanic_physics.F
1798      checkpoint_lev1_directives.h
1799    o NB: this may break global_ocean adjoint temporarily,
1800      but it is clear how to fix it. Will do later, need this now.
1801    
1802    checkpoint55d_post
1803    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1804    o ecco_cost_weights is modified to 1x1 runs
1805    o modifs to allow observations to be read in as
1806      single file or yearly files
1807    o enable to read exf forcing fields as either
1808      single file or yearly files (flag useExfYearlyFields)
1809    checkpoint55d_pre
1810    
1811    o switch between 2-level and 3-level checkpointing
1812    o add ability of MNC to write local and "partial" (eg. 2D slices where
1813      the full 3D field is never actually stored) arrays to NetCDF files
1814      with the correct (that is, the complete multi-dimensional) set of
1815      array indicies
1816      - used in mom_vecinv() to write the diagFreq output
1817      - tested (demonstrated) in verification/aim.5l_cs
1818    o further mnc-ification
1819      - add verification/lab_sea to the list with mnc setups
1820      - fix undefined mnc v-names in cd_code
1821      - add kpp to mnc output (both snapshot and timeave)
1822    o non-hydrostatic code
1823      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1824        in calc_gw.F
1825      - defaults to viscAh
1826      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1827        friction or Leith) in non-hydrostatic mode, as long as there is
1828        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1829    o pkg/cost
1830      extend simple cost functions to treat time mean quantities
1831      (T,U,V) via cost_accumulate_state from cost_tile
1832    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1833        be 2 times larger than the minimum size the advection scheme requires.
1834        now get a perfect conservation of salt in advect_cs test-exp (updated)
1835    o GGL90 (Gaspar's TKE mixed layer)
1836      - add horizontal diffusion of TKE, requires exchanges in
1837        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1838        default. In OPA there is no horizontal diffusion of TKE but the
1839        mixing coefficients are computed from a horizontal average of TKE of
1840        6 points or so. I think that diffusion has a little more physical
1841        justification.
1842      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1843        was in vain)
1844      - mask tke-variable in ggl90_init
1845    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1846    o fix biharmonic diffusion on CS-grid.
1847    o more obcs stuff
1848      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1849        for reading boundary values. This routine is called from
1850        obcs_prescribe_read
1851      - updated obcs_check
1852      - changed sponge layer relaxation parameter units for days to seconds
1853      - turned off sponge layer by default
1854      - changed argument list of OBCS_CALC to myTime+deltaTclock
1855      - fixed about 35 bugs in obcs_external_fields_load
1856    
1857    checkpoint55c_post
1858    o obcs stuff
1859      - new runtime flags useOBCSprescribe, useOBCSbalance
1860      - re-arranged obcs_calc
1861      - moved exf_getobcs to obcs_prescibe_read
1862        obcs_prescibe_read is called after ORLANSKI stuff
1863        and independent of it (executable can contain all).
1864      - updated obcs_check
1865      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1866        These may be necessary only if tangential velocities are
1867        prescribed at OB, not sure, needs testing.
1868    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1869      which simplifies the calls and passes the ifc check-bounds test
1870    
1871    checkpoint55b_post
1872    o add a 2D scalar, Z location, exchange_2 routine.
1873    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1874      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1875      affects advect_cs results (for the wrong reason): update output.txt
1876    o use a more standard discretization for biharmonic viscosity ;
1877     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1878      affects results of dome set-up: update output.txt
1879    o fix gad_advection.F (CubedSphere part), back to version 1.23
1880    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1881    
1882    checkpoint55a_post
1883    o merged code to
1884      * prescribe/read time-dependent open boundaries
1885        (works in conjunction with exf, cal)
1886      * sponge layer code for open boundaries
1887      * each boundary N/S/E/W now has its own CPP option
1888        (healthy for the adjoint)
1889    
1890    checkpoint55
1891    o up-to-date adjoint of previous breaks
1892      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1893      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1894      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1895      - carbon: * remove tr1-related adjoint verification
1896                * add ptracer as control variable
1897    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1898      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1899    
1900    checkpoint54f_post
1901    o in verification/carbin/ remove experiment related to
1902      ALLOW_PASSIVE_TRACER (array tr1 etc)
1903      code_ad/ input_ad/ results_ad
1904    
1905    o add two new packages
1906      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1907        + subject to optimization (memory)
1908      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1909        + subject to reordering (many GOTOs in the original code)
1910        + so far opps is called for every (i,j) point, and then operates in
1911          the vertical; one may want to reorder the scheme in order operate in
1912          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1913          fields)
1914    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1915      - all verification tests compile and run with linux_ia32_g77
1916      - defaults are compatible with current input files--nothing
1917        should change if you were not previously using MNC
1918      - MNC output has been added in numerous places (eg. timeave)
1919        but there are still a few writes not yet do-able with MNC
1920        (this is in progress)
1921      - flags now allow for either/or/both use of MDSIO and MNC and
1922        documentation will soon follow
1923      - numerous small formatting cleanups for ProTeX
1924    o add version info (via BUILD_INFO.h) to MNC and stdout
1925    
1926    checkpoint54e_post
1927    o add two new packages
1928      - pp81 (Packanowski and Philander, 1981), Richardson number and
1929        stratification dependent mixing
1930      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1931      - these scheme operate in a similar manner as KPP (without ghat, of
1932        course), however there is only one diffusivity that is used for both
1933        temperature and salinity (and passive tracers)ç
1934    o add offline package
1935    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1936      provided by Stephanie Dutkiewicz
1937    o genmake2: add ability to search for C compilers and cleanup test output
1938      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1939    
1940    checkpoint54d_post
1941    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1942    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1943      leading to additional shift by 5 days each year of integration
1944       (i.e. leading to considerable offset over the years)
1945    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1946    o start with no AB and no initial filtering (staggerTimeStep):
1947      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1948    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1949      (external loading & cpl import/export stay in forward_step.F)
1950    o update coupling interface to work with new staggerTimeStep
1951    o change MDSIO ptracers_pickup.
1952    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1953    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1954    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1955    
1956    checkpoint54c_post
1957    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1958      this affects (truncation error) output.txt of test-exp:
1959       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1960    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1961    o change Qnet to always be the net heat flux, (+upward).
1962      affects (truncation error) output of natl_box exp.: updated
1963    o define the max number of passive tracers in PTRACERS_SIZE.h
1964    o start to test mnc routinely in exp0
1965    o add sea-ice loading (sIceLoad) as a new forcing field.
1966    
1967    checkpoint54b_post
1968    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1969       impressive on Altix and Opteron systems)
1970    o diagnostics can now write NetCDF files through the mnc package
1971    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1972    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1973    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1974      affects (truncation error) output of lab_sea & natl_box exp.: updated
1975    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1976    
1977    checkpoint54a_post
1978    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1979    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1980    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1981    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1982      + internal_wave (shift in writing cg2d_ini_res)
1983    checkpoint54a_pre
1984    
1985    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1986      - modified verification/lab_sea and natl_box_adjoint accordingly
1987    
1988    checkpoint54
1989    checkpoint53g_post
1990    o prepare splitting of thermodynamics: store convect.counter in common block
1991    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1992      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1993    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1994    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1995    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1996    o restore adjointability
1997    
1998    checkpoint53f_post
1999    o modifications that affect AIM experiment results (update output.txt):
2000      - no advection of S at top interface Nr (pkg/generic_advdiff)
2001      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2002    o AIM pkg:
2003      - include stability function into surf.Flux derivative relative to Tsurf
2004      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2005    
2006    checkpoint53e_post
2007    o merged cylindrical coord configuration
2008    o added rotating_tank experiment
2009    checkpoint53e_pre
2010    
2011    checkpoint53d_post
2012    o faulks upgraded: re-generate output.txt that have changed:
2013       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2014    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2015    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2016    o added Sadourny discretization of Coriolis
2017      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2018      - re-enabled use of omega3 (useAbsVorticity)
2019    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2020      vector-invariant equations
2021      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2022    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2023      hopefully without new bugs
2024      - still to do: biharmonic friction for non-hydrostatic w
2025    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2026    o regenerated output for global_ocean_ebm (using -ieee)
2027    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2028      of mom_common/
2029      - simple re-arrangement of instructions within computing loop
2030    checkpoint53d_pre
2031    
2032    checkpoint53c_post
2033    o new version of coupler for AIM+thSIce and Ocean models
2034     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2035     - land: change Evaporation of snow
2036     - aim with thSIce: fix bug in snow-precip.
2037    o changes to calc_gw.F
2038     - bug fix for w^2 term near the bottom boundary
2039     - (hopefully) improve the lateral slip boundary condtions for use with
2040        partial/looped cells
2041      - because the bug fix changes two verification experiments anyway (exp5
2042        and plume on slope), change the lateral boundary condition from half slip
2043        to the value of no_slip_sides
2044    o ebm package wasnt quite up to the parallel task. Fixed that.
2045    o Adjoint of EBM package + verification
2046      * TLM OK
2047      * ADM not sufficient accuracy yet (needs further testing)
2048    
2049    checkpoint53b_post
2050    o Commiting new energy balance model to repository
2051      * package is pkg/ebm
2052      * verif. is verification/global_ocean_ebm
2053      * references are in ebm_driver.F
2054    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2055    C        Global thermohaline circulation. Part I:
2056    C        Sensitivity to atmospheric moisture transport.
2057    C        J. Climate 12(1), 71-82
2058    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2059    C        Global thermohaline circulation. Part II:
2060    C        Sensitivity with interactive transport.
2061    C        J. Climate 12(1), 83-91
2062    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2063    C        Destabilization of the thermohaline circulation
2064    C        by atmospheric eddy transports.
2065    C        J. Climate 7(12), 1870-1882
2066    o Will need long integration testing.
2067    checkpoint53b_pre
2068    
2069    o created pkg/mom_common in preparation for variable viscosity code
2070    o renamed and split ini_mnc_io
2071    o pkg/land: only liquid water can diffuse or run-off
2072    o AIM using land: soil wetness availability account for snow
2073    o added printMapIncludesZeros to EEPARMS namelist
2074    
2075    checkpoint53a_post
2076    o restore TAMC compatiility for exf_constants.h
2077      (no usage of _d in .h)
2078    o Additional storing in KPP in an attempt to fix
2079      TAMC problem with adjoint of KPP code.
2080      (no success...)
2081      Identical code works fine with TAF.
2082    o Fixed verification/natl_box_adjoint experiments.
2083      Initial conditions for Experiments 4 and 5 are now
2084      set to "SEAICE_initialHEFF=0", which is more reasonable,
2085      and hence gives results closer to that of Experiment 2.
2086      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2087    
2088    checkpoint53
2089    o stable checkpoint with up to date adjoint
2090      TLM tests only run for 1st grdchk at the moment. Its unclear if
2091      this is a code problem or a problem with resetting code for g_
2092      variables that is being autogenerated wrong.
2093      Otherwise:
2094       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2095       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2096         are both still in chaos following their security messes.
2097    
2098    checkpoint52n_post
2099    o various build (mostly genmake2) changes including:
2100      - ability to build/run more easily within Cygwin and MacOS X
2101      - more complicated Makefiles with a stronger dependence on Gnu Make
2102    o pkg/seaice modifications
2103      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2104        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2105        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2106      - changed proxy for geostrophic velocity and updated
2107        verification/lab_sea/results/* accordingly
2108      - removed ADI dynamic solver from pkg/seaice
2109      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2110        they caused a segmentation fault under certain circumstances
2111      - removed unused field WATR
2112    o bug fix in exf-package:
2113      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2114         now reflect that.
2115    o small fixes in the cal-package:
2116      - set reference date to first of January for the 'model'-calendar
2117      - failing of cal_CheckDate in cal_FullDate now actually results in a
2118        warning
2119    o small modifications in exf-package to increase flexibility:
2120      - change climtempfreeze from a constant to a runtime parameter that
2121        is specified in data.exf_clim (default = -1.9)
2122      - introduce runtime parameter windstressmax (default = 2.0) that is
2123        specified in data.exf
2124    o fix in pkg/thsice:
2125      - update Evap (Tsf changes) to be consistent with Latent heat flux
2126      - maintain snow precipitation unchanged (even if Tsf >=0).
2127     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2128    
2129    checkpoint52m_post
2130    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2131      this does not change any of the results, because myIter=0 in swfrac always
2132      lead to jwtype=2 (the default anyway), but the call makes little sense
2133      as a default
2134    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2135    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2136      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2137    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2138    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2139    o extending useSingleCpuIO option to work with new exch2 I/O format
2140      - old-style, missing-tile I/O is still accessible by defining CPP
2141        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2142    o monitor package can write to NetCDF files and/or STDOUT
2143    o fix re-definition bug in MNC_GRID_INIT_ALL()
2144    o doc/api_reference added
2145      - a framework for building an API Reference Manual using all
2146        the "protex" comments embedded in the code
2147      - see pkg/generic_advdiff, pkg/mnc for examples
2148    o MNC:
2149      - make myThid the last argument for all subroutines
2150      - new default for the grid files: NO halos
2151      - add useMNC and other run-time flags
2152      - separate per-file-group handling of the unlimited dimension
2153      - early initialization of MNC w/ flags read at the eeboot stage
2154        and lookup tables set in initialize_fixed
2155      - write all MNC output to a freshly-created directory
2156    o thermodynamics sea-ice (thsice) is now tested with testreport.
2157    o test exp. advect_cs: use the standard cs32 grid ; update output.
2158    o Added functionality to grdchk:
2159      pick global i,j,k position (or nearest wet) where to perform check.
2160    
2161    checkpoint52l_post
2162    o new land formulation:
2163      a) use ground enthalpy as prognostic variable to ensure exact
2164         energy conservation.
2165      b) account for water temperature and for latent heat of freezing
2166         in all processes (rain, run-off, ground storage)
2167      c) compute surface and ground temperature implicitly.
2168    o aim_v23 modification for new land model:
2169      a) Treat separately land / ocean / sea-ice surface fluxes
2170         to allow implicit computation of land & sea-ice surface temp.
2171      b) add snow precipitation.
2172    checkpoint52l_pre
2173    
2174    o fix problem (when 1 tile is empty) in min/max monitor.
2175    o fix bug in timeAve (u,vZetatave in common block)
2176    o no restoring terms under ice for pkg/seaice
2177    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2178    o bug fix for pkg/seaice pickups
2179    o change MNC call locations and add coordinate attributes
2180    o mask vorticity at the corner ; affects global_ocean.cs output
2181    o fix ini_curvilinear_grid ; test CS experiments with mpi
2182    o aim.5l_cs: modify sea-ice fraction input file ; update output
2183    o exf: Adding simple range check routine for exf fields after read
2184    
2185    checkpoint52k_post
2186    o removed top-level directory "diags"
2187      - we migrated these functions to pkg/timeave a long time ago
2188    o fixed bug introduced in pkg/monitor
2189    o accuracy ctrlprec = 32 insuffient for gradient checks using
2190      averaged fields (I/O via cost_averages)
2191      -> use ctrl.h in active_file*.F to control I/O precision.
2192    o paramter list of CALL ADTHE_MAIN_LOOP
2193    o added initial do_the_model_io to ecco
2194    o set all ...Freq to zero after cost_final
2195      taveFreq, dumpFreq, pChkptFreq
2196    o MAIN and ECCO differentiability restored
2197    
2198    checkpoint52j_post
2199    o fix nchklev in tamc.h for global_ocean...
2200    o Bringing flow and store directives up-to-date
2201    o Really weird thing!
2202      call do_the_model_io from the_main_loop with parameters
2203      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2204      TAF places a faulty re-call of initialise_varia
2205      after cost_final call which should not be there!
2206    checkpoint52j_pre
2207    
2208    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2209      error messages
2210    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2211    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2212      debug output
2213    o modfied mdsio_writefield.F to handle non-global files under exch2
2214    o update AIM Cubed-Sphere exp (aim.5l_cs):
2215      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2216    o update AIM Equatorial Channel exp:
2217      use standard aim_v23 pkg and change the SST fields to be more realistic.
2218    o globalFile now works with exch2
2219    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2220      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2221    o limit timeave output for hi-res integrations
2222    
2223    checkpoint52i_post
2224    o removed CPP_EEOPTIONS.h from verification/*/code
2225    o updated the tiling for global_ocean_pressure
2226    checkpoint52i_pre
2227    
2228    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2229      the old pkg/aim).
2230    
2231    checkpoint52h_pre
2232    o shortened offending lines in exch2_send_rx?.template
2233    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2234    o genmake2: add build & execute test for NetCDF code
2235    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2236      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2237    o added useSingleCPUIO flag to monitor.F and mon_out.F
2238    o added temporary hack for sea-ice dynamics on the cube:
2239      metric terms are ignored and it is assumed that
2240      there is no sea-ice on cube faces 1, 2, 4, and 5.
2241    
2242    checkpoint52f_post
2243    o added exch2 cube routines to pkg/exch2
2244    o modified hs94.cs-32x32x5 to use it
2245    o added new grid files to hs94.cs-32x32x5
2246    checkpoint52f_pre
2247    
2248    checkpoint52e_post
2249    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2250      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2251    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2252      to work with implicit vertical advection and AB ;
2253    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2254    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2255     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2256    checkpoint52e_pre
2257    
2258    o fix bug in impldiff when Nr=1 or Nr=2.
2259    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2260    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2261    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2262      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2263    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2264    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2265    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2266    
2267    checkpoint52d_post
2268    o re-tiled many expts to allow comparison in multi-processor mode
2269      - updated output accordingly
2270      - changed hs94.128x64x5 to use intial T from file rather than use the
2271        random number generator
2272    o add infrastructure in model routines for fizhi and gridalt packages
2273    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2274    o changes to permit hi-res, cubed-sphere, configuration
2275      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2276      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2277      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2278        of surface winds for the cube
2279      (A verification experiment, based on global_ocean.cs32x15, but with
2280       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2281       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2282       complete with example surface forcing files and matlab scripts to look
2283       at the output and compare it with that of global_ocean.cs32x15.)
2284    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2285       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2286       to conform to the common rule.
2287    o check-in the first version of the coupler + interfaces for multi-components
2288       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2289       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2290       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2291       - ocean and atmos. share the same horizontal grid (no interpolation).
2292       - exchanges between component and coupler is done in forward_step
2293    o new verification experiment, cpl_aim+ocn:
2294       coupled ocean - AIM atmosphere on cs32 grid.
2295    
2296    checkpoint52d_pre
2297    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2298    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2299    
2300    checkpoint52c_post
2301    o Fixing OPTIONS files for use of exf:
2302      - ALLOW_ECCO not needed
2303      - ECCO_CPPOPTIONS.h should not be included from
2304        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2305        as has been the case in the past
2306      - All cal/exf related options are currently set in
2307        single header file. Should remain so until we
2308        agree on a consistent new policy.
2309    o Removed all CPP options for cal package.
2310      cal has no more CPP options.
2311    o modified STOREs in GAD_ADVECTION
2312    o corrected key comp. for passkey
2313    
2314    checkpoint52b_post
2315    o new version: "thsice" of thermodynamic sea-ice pkg:
2316     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2317     - modify fluxes but do not change theta directly;
2318     - light cleaning of bulk_force pkg (still needed with thsice).
2319     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2320       + output_thsice.txt to test thsice & bulk_force pkgs.
2321    o put back grid & coriolis monitor output.
2322    checkpoint52b_pre
2323    
2324    o call "do_the_model_io" at the beginning (=> dump initial state)
2325    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2326    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2327      (need info on NUMBER_OF_PTRACERS)
2328    o missing PTRACERS headers in some routines
2329    o default tamc.h in pkg/autodiff supposed to crash
2330      to ensure proper customization
2331    
2332    checkpoint52a_post
2333    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2334      - moved surfaceTendencyTice from pkg/seaice to main code
2335      - subroutine FREEZE_SURFACE now limits only surface temperature
2336        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2337        => new output.txt for global_ocean.cs32x15 & global_with_exf
2338      - keep the old version of FREEZE for backward compatibility;
2339        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2340      - corresponding modifs for TAF directives
2341    o added surface flux output variables to TIMEAVE_STATVARS
2342    o time-averaged output for pkg/ptracers
2343    o fix problem with ECCO-related divided adjoint
2344      snapshot file was missing some ad-variables,
2345      but no warning issued by TAF
2346    
2347    checkpoint52a_pre
2348    o some bug fixes for #undef REAL4_IS_SLOW
2349    
2350    checkpoint52 = ecco_c52_e35
2351    o after testing adjoints of checkpoint51u_post
2352    
2353    checkpoint51u_post
2354    o this is the post-merge tag of the ecco-branch
2355      (needs another clean checkout and re-testing)
2356    o various natl_box_adjoint configs and results
2357      but no input fields
2358    o obcs adjoint not yet merged!
2359    o adding ECCO global 1x1 and 2x2 degree configs
2360    o updated/extended some store directives for seaice
2361    o pkg/ecco now containes ecco-specific part of cost function
2362    o top level routines the_main_loop, forward_step
2363      supersede those in model/src/
2364      previous input data.cost now in data.ecco
2365      (new namelist ecco_cost_nml)
2366    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2367    
2368    checkpoint51t_post
2369    o this is the pre-merge tag of the ecco-branch
2370    
2371    checkpoint51s_post
2372    o cleanup: removed various obsolete #define-s
2373    o pkg/grdchk
2374      - renamed 'ph-grd 3' to 'grad-res'
2375      - merged from ecco-branch
2376        (remaining bug fixes for obcs gradient checks)
2377      - additional high-precision output for testreport
2378        (grep for 'precision_grdchk_result')
2379    
2380    checkpoint51r_post
2381    o cleaned up or removed CPP_OPTIONS.h files
2382    o updated results for some of the tests to reflect the new
2383      optfiles (-ieee: -O0 instead of -O3)
2384    
2385    checkpoint51q_post
2386    o cd_code:
2387      - moved cd_scheme.F -> cd_code_scheme.F
2388      - separate read_checkpoint from cd_code_ini_vars.F
2389      - separated cd_code part from write_checkpoint
2390      - updated AD_SOURCE, generated .flow
2391      - added CD_CODE_VARS.h to the_main_loop
2392      - Moving cd_code specific store dir.s to pkg/cd_code
2393    o ctrl package totally restructured
2394      - pack/unpack now optional and decoupled from
2395        xx_/adxx_ I/O
2396      - ctrl_pack/unpack cleaned
2397        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2398      - confined inclusion of AD_CONFIG.h to where necessary.
2399    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2400    
2401    checkpoint51p_post
2402    o create initial cd_code package
2403      - WARNING: the initialization of fields within packages
2404        is broken because INI_FIELDS (where READ_CHECKPOINT is
2405        called) is called *before* PACKAGES_INIT_VARIABLES.
2406        This seems to be backwards since
2407        1) its important to initially zero the entire field including
2408           the "halo" region
2409        2) zeroing needs to be done *before* reading pickup info
2410           and the pickup call might or might not happen in any
2411           particular run
2412      - this needs an overhaul for R2
2413    o cleanup verification/*/code/GMREDI_OPTIONS.h
2414    o cleanup testreport
2415    
2416    checkpoint51o_post
2417    o bringing AD-related verif's up to date with genmake2
2418      - carbon/
2419      - global_ocean.90x40x15/
2420      - hs.94.1x64x5/
2421      - (front_relax/ )
2422    o (more) consistent directory structure for AD-related verif.'s
2423    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2424    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2425    o bug fix in find_alpha.F for MDJWF:
2426      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2427        change rho -> rho-rhoConst
2428      - replace call find_rho to find_rhonum
2429    o initialisation of rFlx extended to full array (required by TAF)
2430      and shifted to thermodynamics
2431    o removed PTRACERS.h in ptracers routine
2432    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2433    o Correcting initialisations for fVerU, fVerV.
2434    o helping TAF to recognize dependency on kUp for
2435      fVerU, fVerV
2436    o Replacing delZ by delR in pkg/ctrl/
2437    checkpoint51o_pre
2438    
2439    o undid all of cp51 pending some cleanups and discussion
2440    o added the [#include "AD_CONFIG.h"] statement to all files that need
2441       it for adjoint/tl #defines
2442     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2443     o removed tools/genmake since it no longer works
2444    
2445    checkpoint51n_post
2446    o modifications to make FREEZE flux visible to pkg/kpp
2447      - moved surfaceTendencyTice from pkg/seaice to main code
2448      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2449      - subroutine FREEZE now limits only surface temperature
2450        (this means new output.txt for global_ocean.90x40x15,
2451         global_ocean.cs32x15, and global_with_exf)
2452    o added surface flux output variables to TIMEAVE_STATVARS
2453    
2454    checkpoint51n_pre
2455    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2456    o added [#include "AD_CONFIG.h"] to all files that use the following
2457      defines:
2458      - ALLOW_ADJOINT_RUN
2459      - ALLOW_TANGENTLINEAR_RUN
2460      - ALLOW_ECCO_OPTIMIZATION
2461    
2462    checkpoint51m_post
2463    o incorporating changes to get TAMC/TAF working in genmake2
2464      - added new TAMC/TAF targets to the Makefile
2465      - various cleanups related to package handling
2466      - these changes should have no impact on the forward model
2467    
2468    checkpoint51l_post
2469    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2470     - faster algorithm for cal_addtime.F
2471     - higher precision arithmetic, where needed
2472     - pkg/exf *startdate variables changed from calendar date to
2473       model integration time
2474    
2475    checkpoint51l_pre
2476    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2477    o enable to apply restoring on S & T only in a latitude band.
2478    o update output (external_forcing_surf modif. change truncation errors)
2479       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2480    
2481    checkpoint51k_post
2482    o change default to: useNHMTerms=.FALSE.
2483     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2484       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2485     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2486        exp1, ideal_2D_oce
2487     - change data file of oceanic exp (leave the results unchanged for now)
2488       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2489    o set gravitySign automatically according to the vertical coordinate used
2490      (and change sign: back to "logical" value: +1 when R increases downward)
2491    o added an include barrier to the default CPP_OPTIONS.h and
2492      removed the #include "PACKAGES_CONFIG.h" from it
2493    o fix a bug in mom_fluxform (from chk51j_post)
2494    
2495    checkpoint51j_post
2496    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2497    o adjusted some flow directives (dynamics, thermodynamics)
2498    o added cubed-sphere case to test cost function
2499    o heckpoint_lev?_directives.h now include
2500      pkg-specific directives, whenever those are enabled.
2501    o Moving pkg-specific flow directives to corresponding pkg
2502      Moving pkg-specific differentiation list to corresponding pkg
2503      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2504      ---> conventions are
2505           - pkg_ad.flow
2506           - pkg_ad_diff.list
2507           - pkg_ad_check_lev?_dir.h
2508    
2509    checkpoint51i_post
2510    o merge of the branch-genmake2
2511      - knowingly breaks the older genmake
2512      - automatic generation of all ALLOW_${PKG_NAME} defines
2513      - new testreport supersedes older testscript
2514    o large number of package inclusion and header cleanups
2515    checkpoint51i_pre
2516    
2517    o new output for adjoin of global ocean vector invariant
2518    o fix for checkpoint of thermodynamic seaice and bulk_force
2519    o Steph gchem various cleanups
2520    
2521    checkpoint 51h_pre
2522    o fixed some single quotes
2523    o modify gchem pkg to be more versatile
2524    o modifications to clean up dic pkg
2525    o add pkg/cfc
2526    
2527    checkpoint51g_post
2528    o provide links for ARPACK and ADM*TLM
2529    o start removing verification/vero/
2530    o update AD-related stuff
2531      (in particular some IF-statements in model/src/ routines)
2532    o adding to verification/global_ocean.90x40x15/ adjoint of
2533      vector invariant setup
2534    
2535    checkpoint51f_post
2536    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2537    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2538      of tracer Green's fucntions for ocean inversion project.
2539    
2540    checkpoint51f_pre
2541    o Added on-the-fly spatial interpolation capability
2542        "USE_EXF_INTERPOLATION" to pkg/exf.
2543      - This is a temporary Cartesian-grid hack until
2544        the super-duper ESMF coupler becomes available.
2545      - See verification/global_with_exf/README for usage example.
2546      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2547        flags and modified pkg/seaice accordingly.
2548    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2549        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2550        non-local transport term.
2551    
2552    checkpoint51e_post
2553    o pkg/mom_vecinv:
2554      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2555      - add time-ave diagnostic of vorticity advection.
2556    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2557    o atmospheric geopotential: - include water vapor effect;
2558                                - use p^kappa in p* scaling.
2559    o land pkg: read initial state from files.
2560    o AIM : add stratospheric drag in the upper level
2561    
2562    checkpoint51d_post
2563    o change function ILNBLNK (=> last non-blank char.) to return zero
2564      (instead of the string length) when the string. char is empty
2565    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2566    o modif's to restore TAMC compatibility
2567      - avoid "_d" constructs in PARAMETER declarations
2568      - avoid interrupting lines by comment lines
2569    o Use cluster local disks for purely local I/O
2570      vs. globally visible disks needed for ctrl stuff
2571      (merged from ecco-branch)
2572      - new active_file_loc... and mdsio_..._loc routines
2573      - affected packages: autodiff, ctrl, grdchk, mdsio
2574    
2575    checkpoint51c_post
2576    o introducing integer flag debugLevel
2577      - debLevZero: suppress all output
2578      - debLevA: standard
2579      - debLevB: equivalent to current debugMode=.TRUE.
2580    o introducing pathname variable mdsioLocalDir for mdsio
2581      that can be specified at runtime
2582      (relevant for cluster I/O to local disk)
2583    `
2584    >>>checkpoint51b_post
2585    adjoint of ptracers
2586    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2587    o extended state in checkpoint_lev?, etc.
2588    o alternative ctrl/cost with tr1 or ptracer
2589    o new comlev1_bibj_ptracers
2590    o new ptracers.flow
2591    o made ptracers_forcing same as external_forcing_s
2592    o added verification for adjoint with ptracers
2593      - adm. grdchk fail so far
2594      - tlm. grdchk OK
2595      - checked tapelev/comlev recomputations: OK
2596    <<<checkpoint51b_pre
2597    
2598    checkpoint51a_post
2599    o added code for biogeochemistry package
2600      - new pkgs: dic, gchem
2601      - new subroutine in ptracers
2602    o modify code for biogeo packages
2603      - in model/src and pkg/ptracers
2604    
2605    checkpoint51
2606    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2607      - autodiff, ctrl, exf, grdchk, seaice
2608      kept separate packages
2609      - cost, ecco, obcs
2610    o updating verification/internal_wave, verification/lab_sea
2611      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2612    
2613    checkpoint50i_post
2614    o Preparing next differentiable checkpoint and sync
2615      of MAIN vs. ecco-branch
2616      - 1st step: this one is differentiable
2617      - 2nd step: next(! not this) checkpoint will have updated packages
2618                  from ecco-branch)
2619    
2620    checkpoint50h_post
2621    o new package "land": provide surface BC for AIM.
2622    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2623    o AIM: use true log-P extrapolation for near surface temp (= as in
2624        F.Molteni paper) ; update aim.5l_cs output.
2625    o New variable in PARM03 for more flexible pickups
2626    o somewhat cleaned package initialisation sequence for
2627      ctrl/ cost/ ecco/ in packages_... routines
2628    
2629    checkpoint50g_post
2630    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2631      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2632      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2633        made the default because of faster convergence than ADI
2634    
2635    checkpoint50f_post
2636    o exf totally restructured
2637      - replaced all exf_set_ routines by one generic exf_set_gen.F
2638        and made sure it's still differentiable
2639      - split exf_getffields.F into new exf_bulkformulae.F
2640      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2641      - updated adjoint/makefile and relevant verif. accordingly
2642    
2643    checkpoint50f_pre
2644     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2645          + change Evap over land. (update aim.5l_cs output)
2646     o added missing .cvsignores and made uniform across expts
2647     o changed configuration of tidal_basin_2d expt
2648     o added pkg/debug functions for tracing code in fatal crashes
2649     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2650     o new fn in pkg/monitor to stop model if solution grows too big
2651     o removed lots of single quotes from comments
2652    
2653    checkpoint50e_post
2654    o make KPP work with PTRACERS
2655     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2656       nearly a copy of kpp_transport_s
2657     - there is no analogue to SurfaceTendencyS, so I have to use
2658       gPtr(of the surface layer) instead
2659    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2660    checkpoint50e_pre
2661    
2662    checkpoint50d_post
2663    o change kpp output from multiple-record state files to single-record state
2664      files analogous to write_state.F
2665    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2666      analogous to the cg2d-related output.
2667    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2668      so that writing to internal file fn (with length 512) fails.
2669    checkpoint50d_pre
2670    
2671    checkpoint50c_post
2672    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2673    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2674    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2675    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2676    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2677    
2678    checkpoint50c_pre
2679    Merging from release1_p13:
2680    o bug fix for pkg/seaice dynamic solver
2681    o Added SEAICE_initialHEFF to pkg/seaice
2682    
2683    checkpoint50b_post
2684    o store u*,v* in gU,V instead of in guNm1,gvNm1
2685    o in order to put the momForcing out of the Adams-Bashforth:
2686      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2687      to timestep.F
2688    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2689    o re-generate output for highly sensitive test-exp:
2690       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2691    
2692    checkpoint50b_pre
2693    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2694    o corrected CPP option mismatch in exf_Bulk... functions for case
2695      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2696    
2697    checkpoint50a_post
2698    o Bug fix for merging between c50 and KPP.
2699      ikey was passed from thermodynamics to kpp_calc via
2700      common block rather than being recomputed in kpp_calc,
2701      in contradiction with new key itdkey.
2702      New key ikppkey created, and tamc.h headers updated.
2703    
2704    checkpoint50
2705    - 2nd step of merge with ecco-branch:
2706      merge changes in ecco-branch back into main trunk
2707    - bug fix in find_alpha
2708    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2709    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2710    - merged some sliced AD support routines
2711    
2712    checkpoint49
2713    merged from ecco-branch:
2714    o exf:
2715      - Enable initialisation of forcing fields to constant
2716        (runtime) values.
2717      - in exf_getffields.F
2718        Reduce i-/j-loop to interior domain, discarding overlaps.
2719        That also fixes wrong TAF-key computations for key_1, key_2
2720        with bulf formulae.
2721      - exf_init.F modify #ifdef for exf_init_evap
2722      - exf_getffieldrec.F, ctrl_getrec.F
2723        The following INT-usages are not safe:
2724          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2725          fldcount = int(fldsecs/fldperiod) + 1
2726        and were modified.
2727    o autodiff: checkpoint_lev...
2728      - updated storing for bulk formulae (some arrays were missing)
2729      - added state for seaice package
2730      - synchronized with main branch
2731    o DIVA:
2732      Modif.s in
2733      - the_main_loop.F
2734      - the_model_main.F
2735      and added cost_final_restore.F cost_final_store.F
2736      o With these changes, it is possible to fully separate
2737        the first forward run to compute the cost function (mdthe_main_loop)
2738        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2739        into separate model executions.
2740        This enables better tuning of DIVA to given queue sizes.
2741      o Loss of cost function value in consecutive DIVA runs is
2742        fixed by storing to 'costfinal' file.
2743      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2744        beginning/end of adjoint integration is accounted for.
2745      The current changes apply to TAF-1.4.26.
2746      TAF has one remaining bug, requiring one manual change
2747      (see MITgcm manual).
2748    o cal: synchronized between MAIN and ecco-branch
2749    
2750    checkpoint48i_post
2751    o Changes to restore differentiability of code w.r.t. previous tag
2752      (mostly adding new routines to make list and replacing
2753      pressure by totPhiHyd).
2754    o Updated and merged grdchk package
2755      - has both ADM and TLM checks
2756      - works for single- and multi-proc.
2757      - output cleaned
2758      - worked successfully for parallel DIVA
2759    o genmake:
2760      - Adding -platform=SP4
2761      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2762    o Modif. for DIVA:
2763      ctrl_unpack should not be called in intermediate DIVA interval.
2764      (similar thing would apply for active files such as
2765      tbar, sbar, psbar, which should not be reinitialised;
2766      only relevant for ecco-branch)
2767    
2768    checkpoint48h_post
2769    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2770    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2771    o Added SEAICE_initialHEFF to pkg/seaice
2772    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2773    
2774    checkpoint48g_post
2775    --- EOS:
2776    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2777      store total Potential in totPhyHyd for diagnostics & EOS.
2778    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2779    --- Pressure/geopotential gradient:
2780    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2781    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2782      ( changes results of global_ocean_pressure )
2783    o NLFS + z-coord.: add eta*Rho' contribution.
2784    o accurate phiHyd when using interface-W at the middle between 2 centers
2785     ( changes results of ideal_2D_oce )
2786    o includes r* 2nd term in potential gradient.
2787    
2788    checkpoint48f_post
2789    Merging from release1_p12:
2790    o Modifications for using pkg/exf with pkg/seaice
2791      - improved description of the various forcing configurations
2792      - added basic radiation bulk formulae to pkg/exf
2793      - units/sign fix for evap computation in exf_getffields.F
2794      - updated verification/global_with_exf/results/output.txt
2795    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2796      (SBO) core products, including oceanic mass, center-of-mass,
2797      angular, and bottom pressure (see pkg/sbo/README.sbo).
2798    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2799      to avoid negative values in shallow regions.
2800      - updated verification/natl_box/results/output.txt
2801      - updated verification/lab_sea/results/output.txt
2802    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2803    o Added useSingleCpuIO option (see PARAMS.h).
2804    o Updated useSingleCpuIO option in mdsio_writefield.F to
2805      work with multi-field files, e.g., for single-file pickup.
2806    o pkg/seaice:
2807      - bug fix in growth.F: QNET for no shortwave case
2808      - added HeffFile for specifying initial sea-ice thickness
2809      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2810    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2811      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2812    o pkg/seaice:
2813      - adjoint-friendly modifications
2814      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2815    
2816    checkpoint48e_post
2817    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2818    o dynamics: change definition of computational domain & adapt mom_fluxform
2819      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2820    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2821        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2822        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2823        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2824        inverted_barometer solid-body.cs-32x32x1
2825      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2826    
2827    checkpoint48d_post
2828    o in preparation for r*:
2829     a) use pre-computed gradient of hydrostatic potential:
2830        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2831     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2832        => affects results of glob_oce_pressure (different truncation error)  
2833      update output.txt of ideal_2D_oce & global_ocean_pressure
2834    
2835    checkpoint48d_pre
2836    o in preparation for r*:
2837      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2838      pass the 2 comp. of the grad. as arguments to momentum S/R.
2839      but for the moment, only used if it does not change the results.
2840    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2841    
2842    checkpoint48c_post
2843    Modifications in treatment of initial flux forcing controls
2844    to avoid extra storing of flux fields.
2845    
2846    checkpoint48c_pre
2847    o Added tidal_basin_2d experiment (currently 1D!)
2848    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2849    
2850    checkpoint48b_post
2851    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2852     (modification to pressure gradient not yet implemented)
2853    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2854      (for U & V) that are used for vertical advection of momentum.
2855    
2856    checkpoint48a_post
2857    o In preparation for r*, use temp. array to compute vertical transport
2858       in flux-form momentum pkg. => change results of few test-exp.
2859      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2860                        lab_sea, natl_box & plume_on_slope
2861    
2862    checkpoint48
2863    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2864    
2865    checkpoint47j_post
2866    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2867    o moved adexch from forward_step to addummy_in_stepping
2868    o added exch in ctrl_map_...
2869    o aveFreq.=0. at end of cost_final to avoid overwrite in
2870      reverse checkpointing loop
2871    o Yet more changes in gmredi:
2872      * adgmredi_calc_tensor
2873        avoiding all recomputation of gmredi_slope_limit
2874      * adgmredi_x/y/rtransport
2875        added flag for excessive storing to avoid recomp. of
2876        u/v/rtans, dTdx/y/z
2877        -> this is not really necessary and very memory-consuming
2878      * adgmredi_slope_psi:
2879        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2880      * gmredi_slope_limit
2881        re-activated full calculation of taperfct for case 'ac02'
2882    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2883    
2884    checkpoint47i_post
2885    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2886    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2887      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2888    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2889    o gmredi: fix few bugs.
2890    
2891    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2892    This will be a good checkpoint to plug into the ecco-branch.
2893    o few modif.'s to get latest version adjointed
2894      (mainly kick out code in ini_linear_phisurf)
2895    o modif's to run adjoint with exactConserv
2896    o case GM_BOLUS_ADVEC should be cleaned
2897      S/R gmredi_slope_psi should be cleaned
2898    o verification/carbon now has exactConserv=.TRUE.
2899    
2900    checkpoint47g_post
2901    o time-average AIM output: becomes independent from statvars time-average
2902      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2903    o After TAF bug fix:
2904      Tested adjoint of gmredi package.
2905      Tests were done with checkpoint47 rather than with latest
2906      checkpoint47f_post since the latter is broken for the adjoint
2907      verification/carbon/ contains both ADM and TLM gradient checks.
2908    Here they are, before they get changed/lost/stolen.
2909    Mostly modif.'s to fix numerical sensitivities.
2910    Gradient checks OK for
2911    - GM_taper_scheme:
2912      * clipping
2913      * ac02
2914      * linear
2915      * glw91
2916      * dm95
2917      * ldd97
2918    - GMREDI_OPTIONS:
2919      * GM_VISBECK_VARIABLE_K
2920      * GM_NON_UNITY_DIAGONAL
2921      * GM_EXTRA_DIAGONAL
2922      * GM_BOLUS_ADVEC
2923    in conjunction with data.gmredi parameters to be checked in
2924    in a few minutes under verification/carbon/code/
2925    
2926    checkpoint47f_post
2927    Merging from release1_p10:
2928    o modifications for using pkg/exf with pkg/seaice
2929      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2930        and SEAICE_EXTERNAL_FLUXES
2931      - pkg/exf CPP options EXF_READ_EVAP and
2932        EXF_NO_BULK_COMPUTATIONS
2933      - usage examples are Experiments 8 and 9 in
2934        verification/lab_sea/README
2935      - verification/lab_sea default experiment now uses
2936        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2937    
2938    checkpoint47e_post
2939    o created a tag prior to creating a branch
2940    
2941    checkpoint47d_post
2942    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2943      at the bottom boundary had an erroneous half slip boundary condition
2944    o added bottom drag and no slip boundary condition capabilities to
2945      oceanic pressure coordinates code
2946    o added new verification experiment global_ocean_pressure, this experiment is
2947      also described in the tutorial section of the manual
2948    checkpoint47d_pre
2949    
2950    checkpoint47c_post
2951    o Added a verification experiment for a global cubed-sphere ocean run
2952      -  verification/global_ocean.cubed32x32x30
2953      -  uses pkg/therm_seaice and pkg/bulk_forcing
2954    
2955    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2956    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2957      when using P-coordinate; only implemented for atmospheric config.
2958    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2959      NOTES: requires option NONLIN_FRSURF to be "#define".
2960    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2961    
2962    checkpoint47b_post
2963    Merging from release1_p9:
2964    o pkg/seaice
2965      - removed GOTO's and added taf directives
2966      - double precision constants to reduce the g77 (Linux)
2967        to F77 (SGI) differences reported in release1_p8
2968    o tools/genmake
2969      - added SGI options
2970    o verification/testscript
2971      - updated to that of checkpoint47a_post
2972    o verification/global_ocean.90x40x15/input/eedata
2973      - modified for SGI f77 compatibility
2974    o verification/lab_sea
2975      - added description of sea-ice model
2976      - added missing matlab routines
2977      - added test of thermodynamics parallelization
2978    
2979    checkpoint47a_post
2980    o new pkg: aim_v23
2981     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2982       for now, keep the same surface forcing as before.
2983     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2984     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2985     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2986    o add diagnostic of surface correction term in monitor output
2987    
2988    o bulk_force and therm_seaice
2989    - Two packages:  bulk_force (Bulk forcing)
2990      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2991    - Earlier integration from Stephaine Dutkiewicz
2992      and Patrick Heimbach.
2993    - Two ifdef statements for compile time,
2994       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2995    
2996    checkpoint47
2997    differentiable version of checkpoint46n_post
2998    o bug fix in quasihydrostaticterms
2999    o * "clean" adjoint code (in terms of extensive recomputations)
3000        can now be obtained for all GMREDI options (i.e. for
3001        - GM_VISBECK_VARIABLE_K
3002        - GM_NON_UNITY_DIAGONAL
3003        - GM_EXTRA_DIAGONAL
3004        - GM_BOLUS_ADVEC )
3005      * However, wrong gradient check problem remains unsolved.
3006      * New CPP options have been introduced for different
3007        tapering schemes
3008    o external_fields_load now part of differentiation list
3009    o pressure needs multiple storing;
3010      would be nice to have store_pressure at beginning or
3011      end of forward_step, e.g. by having phiHyd global (5-dim.)
3012      (NB: pressure is needed for certain cases in find_rho,
3013      which is also invoked through convective_adjustment).
3014    o recomputations in find_rho for cases
3015     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3016    o #define ATMOSPHERIC_LOADING should be differentiable
3017    o ini_forcing shifted to begining of initialise_varia
3018    o Incorporating QNVS line search routines into MITgcm
3019      (this is separate code, and therefore not under pkg)
3020      lsopt/, optim/
3021    o Updated verification/carbon/
3022      - #define GM_VISBECK_VARIABLE_K
3023      - GM_taper_scheme    = 'ldd97'    
3024    
3025    checkpoint46n_post
3026    Merging from release1_p8:
3027    o verification/natl_box:
3028      updating new external_fields_load routine
3029    o New package: pkg/seaice
3030      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3031      The sea-ice code is based on Hibler (1979-1980).
3032      Two sea-ice dynamic solvers, ADI and LSR, are included.
3033      In addition to computing prognostic sea-ice variables and diagnosing
3034      the forcing/external data fields that drive the ocean model,
3035      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3036      The implied surface heat flux is then stored in variable
3037      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3038      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3039      non-local transport term.  Because this call precedes model
3040      thermodynamics, temperature under sea-ice may not be "exactly" at
3041      the freezing point by the time theta is dumped or time-averaged.
3042      N.B.: fairly large differences in accuracy occur across
3043            different platforms/compilers; comparison between
3044            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3045            generated output gives:
3046       T           S           U           V
3047      C D M    c        m  s        m  s        m  s        m  s
3048      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3049      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3050      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3051    
3052      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3053    o GAD:
3054      - generated new common blocks to account for call of
3055        same gad routines with differing traceridentities
3056        (needed to modify tracerIdentity indices in GAD.h)
3057      - generated separate common blocks for case useCubedSphereExchange
3058        (Department of Futurology)
3059      - parameter lists to gmredi_?transport: added tracerIdentity
3060      - added new key indices to tamc.h
3061    o external_fields_load:
3062      - added this routine to TAF list
3063      - needed to make some common blocks global and additional storing
3064        along the same lines as exf package (checkpoint_lev?_directives.h)
3065    o exf:
3066      updated external forcing package
3067      - bug fixes carried over from ecco-branch
3068        (missing OBCS_OPTIONS.h in two routines)
3069      - enable easy to use "no forcing".
3070      - added exf I/O for atmospheric loading
3071      - added exf I/O for runoff data
3072      - transfered scaling between exf <-> MITgcm to exf namelist
3073    o Adding new verification experiment global_with_exf.
3074      This verification experiment is almost identical to the
3075      global_ocean.90x40x15 experiment, except that it uses
3076      the exf (and cal) package instead of the
3077      external_fields_load routine (cf README file).
3078    
3079    checkpoint46m_post
3080    o modified testscript to return -- when there are no lines of "%MON" output
3081    o added new flag "quasiHydrostatic" for QH mode
3082      and new routine quasihydrostaticterms()
3083    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3084      New routine: mom_u_coriolis_nh()
3085    o fixed sign of non-hydrostatic metric terms in u and v equations.
3086      Depend on correct sign of gravitySign.
3087    o added work.pc* to .cvsignore in aim directories using ifc
3088    o introduced flag for controllin non-hydrostatic metric terms
3089    o removed gravitySign from PARM04
3090    o switched to g77/ifc from pgf77 in aim experiments
3091    
3092    checkpoint46l_post
3093    o made convective adjustment work with pressure coordinates:
3094     - changed the direction of k-loop in convective_adjustment.F for the
3095       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3096     - adjusted the reference pressure k-index in convective_adjustment.F
3097     - adjusted the convection condition in convect.F (in analogy to
3098       calc_ivdc.F)
3099     - convective_adjustment no longer computes anything on the halos
3100     - removed the warnings about negative salinity from find_rho.F and
3101       find_alpha.F; instead the new routine look_for_neg_salinity, called
3102       at the beginning of find_rho, find_alpha, and find_beta, does a
3103       check of the entire slice, if CPP-option
3104       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3105    checkpoint46l_pre
3106    
3107    checkpoint46k_post
3108    o fixed the verification/global_ocean.90x40x15 experiment:
3109     - new bathymetry (the world according to A., JMC, and M.)
3110     - new initial fields and forcing fields (*.bin files)
3111     - new POLY3.COEFFS (for the next release one should switch to a full
3112       equation of state: JMD95P or MDJWF)
3113     - fixed several errors and redundancies in the data file
3114     - experiment uses looped cells
3115     - added matlab directory with diagnostic scripts for plotting of output
3116    
3117    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3118     - read AIM physics parameters from a file (data.aimphys)
3119     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3120    
3121    checkpoint46j_post
3122    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3123    o move wVel computation at the end of the time step, in S/R integr_continuity
3124    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3125    o update timeave pkg for wVel diagnostic.
3126    checkpoint46j_pre
3127    
3128    checkpoint46i_post
3129    o Clean up AIM package (and keep the results unchanged):
3130      include CPP_OPTION and use IMPLICT NONE in all routines ;
3131      declare all the variables _RL ; use _d 0 for all numerical constants.
3132      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3133    
3134    checkpoint46h_post
3135    o cleaned up the use of rhoNil and rhoConst.
3136      - rhoNil should only appear in the LINEAR equation of state, everywhere
3137        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3138        and the dynamical equations are all divided by rhoConst
3139    o introduced new parameter rhoConstFresh, a reference density of fresh
3140      water, to remove the fresh water flux's dependence on rhoNil. The default
3141      value is 999.8 kg/m^3
3142    o cleanup up external_forcing.F and external_forcing_surf.F
3143      - can now be used by both OCEANIC and OCEANICP
3144    checkpoint46h_pre
3145    
3146     Added code to convert surface volume flux (fresh water) into
3147     a mass flux when using P coordinates in the ocean (OCEANICP).
3148     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3149    
3150    checkpoint46g_post
3151    o Include a new diagnostic variable phiHydLow for the ocean model
3152      - in z-coordinates, it is the bottom pressure anomaly
3153      - in p-coordinates, it is the sea surface elevation
3154      - in both cases, these variable have global drift, reflecting the mass
3155        drift in z-coordinates and the volume drift in p-coordinates
3156      - included time averaging for phiHydLow, be aware of the drift!
3157    o depth-dependent computation of Bo_surf for pressure coordinates
3158      in the ocean (buoyancyRelation='OCEANICP')
3159      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3160        Theta, Salinity, and Pressure in the parameter list. This routine is
3161        presently contained in find_rho.F. This routine does not give the
3162        correct density for 'POLY3', which would be a z-dependent reference
3163        density.
3164    o cleaned up find_rho
3165      - removed obsolete 'eqn' from the parameter list.
3166    o added two new verification experiments: gop and goz
3167      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3168    checkpoint46g_pre
3169    
3170    checkpoint46f_post
3171    o Enable tangent linear (forward mode) gradient checks:
3172      - extended active file handling to g_... files
3173      - added TANGENT_SIMULATION to theSimulationMode
3174      - extended grdchk package accordingly
3175    o added tangent linear setup in verification/carbon/code_ftl
3176    o added adjoint setup in verification/front_relax/code_ad
3177    
3178    checkpoint46e_post
3179    o Added new equation of state -> MDJWF
3180      - EOS of McDougall et al., 2002, JAOT, submitted
3181      - caveat: the equation of state is only valid for a smaller (more
3182        realistic?) range of values than JMD95P/Z and UNESCO
3183      - added masks to the calculation of pressure in store_pressure
3184      - added more check values for density in check_eos (ini_eos.F), some of
3185        the old check values are out of the range of the MDJWF-eos, so don't
3186        expect perfect matches for those
3187    checkpoint46e_pre
3188    
3189    checkpoint46d_post
3190    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3191      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3192      case of pressure coordinates. eosType='JMD95Z' in
3193      combination with buoyancyRelation='OCEANICP' now causes an error.
3194    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3195      in find_alpha/beta.
3196    checkpoint46d_pre
3197    
3198    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3199      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3200    
3201    checkpoint46c_post
3202    o Changes necessary for ocean in p-coordinates
3203     -  Added new buoyancy relation = 'OCEANICP'
3204     -  Added new parameters = gravitySign (this used to be contained inside
3205        the factor dRdZ which I added when we first switched to R coordinates).
3206     X GM/Redi is not compatible (yet)
3207     X bottom drag and no-slip need to be debugged.
3208    checkpoint46c_pre
3209    
3210    checkpoint46b_post
3211    o Added new equation of state -> JMD95Z and JMD95P
3212      - EOS of Jackett and McDougall, 1995, JAOT
3213      - moved all EOS parameters into EOS.h
3214      - new routines ini_eos.F, store_pressure.F
3215    o Added UNESCO EOS, but not recommended because it requires
3216      in-situ temperature (see JMD95)
3217    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3218      unesco.f to be used with POLY3
3219    checkpoint46b_pre
3220    
3221    checkpoint46a_post
3222    o Added (atmospheric) pressure loading
3223      - new field in FFIELDS.h, etc...
3224      - new cpp flag ATMOSPHERIC_LOADING
3225    o Changed hFacC to _hFacC in calc_phi_hyd.F
3226    o Added SHORTWAVE_HEATING to some files for consistency
3227    checkpoint46a_pre
3228    
3229    checkpoint46
3230    further merges from release1_p5
3231    o new ctrl package
3232      - adopted from ECCO environment to enable optimization
3233      - added Eliassen Palm fluxes to controls
3234    o added Eliassen Palm flux controls to gradient check package
3235    o cost package
3236      - Compatible with new ctrl package
3237      - added Eliassen Palm cost hooks
3238      - modif's of existing cost functions
3239    o Adjoint-related bug fixes in kpp:
3240      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3241      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3242    o autodiff package
3243      - flow directives:
3244        + new for S/R do_the_model_io
3245        + enhanced for S/R checkpoint
3246        + new gmredi.flow
3247      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3248        disable adcommon.h/g_common.h by default.
3249      - fixed problem for adjoint of global_max
3250    o modified verification/carbon/
3251    o New setup for adjoint of global_ocean
3252    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3253    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3254    o incorporated hooks for sponge layer code (external_forcing.F)
3255    
3256    checkpoint45d_post
3257    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3258    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3259      (affects plume_on_slope "cg2d" output)
3260    o add new parameter deltaTfreesurf for free-surface time stepping
3261    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3262    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3263    o change phiMin in exp1 (to agree with documentation)
3264    o add new flags:
3265     - T,S forcing inside/outside Adams-Bashforth
3266     - turn off temp,salt advection and/or forcing
3267     - for each tracer, define internal flag for multiDimAdvection & A-B
3268    o monitor: change definition of KE to check conservation of Energy
3269    
3270    checkpoint45c_post
3271    o Removed f90 comments ("!")
3272    o Modified initialisations to enable exf package for MITgcm
3273      (without invoking ECCO_PACKAGE).
3274    o modifications to gradient check package (Martin Losch)
3275      - enable centered differences
3276      - modified format of standard output
3277    
3278    checkpoint45b_post
3279    o cleaned exchange calls in cg2d
3280    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3281    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3282      to configure barotropic setup (Martin Losch)
3283    o moved some initialisations within bi,bj loop in dynamics
3284      (TAF flow dependency)
3285    o in initialise_varia, moved call packages_init_variables
3286      before convective_adjustment_init
3287      (corresponding adjustment of TAF tape initialisation).
3288    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3289    
3290    checkpoint45a_post
3291    o compute Rho over the whole domain (extend iMin,jMin indices)
3292    o specific exchange for X-slice domain (case Ny=1)
3293    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3294    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3295    
3296    checkpoint44h_post = checkpoint45
3297    o Fix to restore differentiability:
3298      place at which packages_init_variables is called in
3299      initialise_varia is crucial for reverse control flow.
3300    o modifications in GMRedi to enable stable adjoint
3301      (corresponding modif's in thermodynamics, dynamics)
3302    o added missing hook for sponge layer code in external_forcing
3303    o modified test cost functions
3304    o storing in gad_advection (plus removal of write(0,*)!
3305    o missing headers TR1.h added in convective_adjustment routines
3306    o errorMessageUnit set non-equal zero in eeboot
3307      (conflict on some platforms, e.g. IBM SP3)
3308    o modified carbon verif.
3309    
3310    checkpoint44h_pre
3311    o vertical grid option: allow to put the Interface at the middle between
3312      2 cell-centers ; replace delZ in pkg/kpp by drF.
3313    o GM Advective form: Tracers are advected using the residual transport (=
3314      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3315    
3316    checkpoint44g_post
3317    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3318      results) ; ifdef missing in thermodynamics.F
3319    
3320    checkpoint44f_pre,checkpoint44f_post
3321    o added PTRACERS package
3322      This allows an arbitrary number of passive tracers to be integrated
3323      forward simultaneously with the dynamicaly model.
3324      + Implemented so far:
3325        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3326        - I/O and checkpointing
3327        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3328      + Not implemented so far:
3329        - KPP
3330        - OBCS
3331      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3332        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3333        line in data.pkg.
3334      + This package is disabled by default since it increases storage.
3335    
3336    
3337    o testscript: added -cleanup option
3338    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3339                 b) enable to filter 2D fields.
3340    
3341    checkpoint44e_pre,post
3342    o re-wrote convective adjustment to use pre-calculated weights
3343      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3344      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3345      Original calls to convect() still in place.
3346    
3347    chkpt44d_pre,post
3348    o added missing EXCLUDE_MONITOR flags
3349    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3350      (incompatible typ in MIN/MAX expressions caused problems
3351      on IBM SP3)
3352    o in genmake added variable MAKEDEPEND
3353      plus resetting for case SunOS
3354    o added timer_stats.c routine for IBM SP3
3355    o removed variables in dynamics
3356    !!! I forgot to create tag chkpt44d_pre !!!
3357    !!! But chkpt44d_pre = chkpt44c_post    !!!
3358    
3359    o real fresh water flux implemented with non-linear free-surface.
3360    
3361    chkpt44c_pre,post
3362    o few fix (mask in shap_s2, EmPmR in external_field_load,
3363      USE_NATURAL_BCS in solve_for_P);
3364    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3365    
3366    checkpoint44b_pre/_post
3367    o merge of relevant stuff from the ecco-branch:
3368      - genmake: removed $S64 overwrite for case SunOS
3369      - pkg/exf: update and corrections for field swapping and obcs
3370      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3371                  harmonized between ECCO and MITgcm
3372      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3373                      updated checkpointing_lev... lists for obcs
3374      - model/src: minor changes in forward_step, plot_field
3375                   added directive for divided adjoint in the_main_loop
3376      - pkg/mdsio: added mdsio_gl_slice
3377    
3378    o check parameters & config (chkpt44a_pre,post)
3379    o OBC and NonLin_FrSurf.
3380    
3381    checkpoint44
3382    o fix bug in mom_vi_del2uv
3383    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3384    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3385    o update AIM experiments (NCEP input files)
3386    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3387    o added some stuff for AD
3388    
3389    checkpoint43
3390    o added two new advection tests
3391    o added global 4x4 degree ocean test
3392    o added test of H&S94 with free surface on cube
3393    o some final mods for gradient check, adjoint,...
3394    
3395    checkpoint42
3396      Fixed AD-related problems:
3397    o Store directives up-to-date with re-arranged Adams-Bashforth
3398      (mainly thermodynamics.F)
3399    o New store directives for multi-dim. advection schemes
3400      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3401      * new common block and key passkey
3402      (mainly gad_advection.F)
3403    o Modified store directives for split of dynamics/thermodynamics
3404      for the case ALLOW_KPP
3405    o Cleaned argument list for timestep_tracer.F
3406    
3407    checkpoint41
3408    o re-formatted/added comments in prologues of key subroutines
3409      to work with protex
3410    
3411    checkpoint40
3412    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3413    o added FLT (floats) package from Arne along with demo. experiment
3414    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3415      implementation of forward-in-time forcing terms
3416    o more mods for non-linear free-surface including new variable
3417    o modified multi-dim method to work on cube
3418    o bug fix in KPP (from DM)
3419    
3420    checkpoint40pre9
3421    o added DST advection schemes
3422    o fix MPI bug on SGI's
3423    o modifications for non-linear free-surface
3424    o fixed conditionals for fixed flow/passive tracer only mode
3425    o added tension/strain form of stress tensor
3426    o changes to commenting of arguments for TAF/TAMC
3427    o added/updated many matlab scripts
3428    o added multi-dimensional advection method for tracers
3429      
3430    checkpoint40pre8
3431    o new package rw/
3432      Added method for dumping intermediate local arrays:
3433      mdsio_writetile - same as mdsio_writefield except works from inside
3434                        bi,bj loop
3435      mdsio_writelocal - same as mdsio_writetile except works for local
3436                         arrays
3437      write_local_r? - higher-level wrapper for mdsio_writelocal
3438      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3439      Example given at end of mom_vecinv.F that dumps some local arrays.
3440    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3441      control flux-form versus vector invariant code.
3442      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3443      or genmake -DISABLE ...
3444    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3445      (additional storing is now needed for case vecinv;
3446      currently nothing implemented to switch this storing off
3447      in case fluxform is used since no CPP flag available).
3448    
3449    checkpoint40pre7
3450    o bug fix in dynamics.F
3451      calc_viscosity called before k=1,Nr loop.
3452    o added some #ifdef's ALLOW_PASSIVE_TRACER
3453    o cleaned initialisations in ctrl_map_ini
3454      related to TAF
3455    
3456    checkpoint40pre6
3457    o split dynamics into thermodynamics & dynamics
3458    o corresponding split of calc_diffusivity into
3459      calc_diffusivity, calc_viscosity
3460      (kpp_calc_diff, kpp_calc_visc).
3461    o Added diffkr, kapgm to control variables
3462    o bug fix in gmredi_slope_limit for ldd97
3463    
3464    checkpoint40pre5
3465    o proper initialization of Adams-Bashforth time stepping
3466      + uses forward step for very first step of model (iter=0)
3467    o re-generated *all* output since almost all output is modified by this
3468      change (sorry but we've been putting this one off for about 2 years)
3469      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3470        *not* regenerated since they are already out of date and I don't
3471        want to create the impression that they are suddenly working.
3472    o removed KAP stuff for DEC's
3473    o modified/added many .cvsignore files in */code and */input
3474    o added new expt "solid-body.cs-32x32x1"
3475      + this uses an alternative form of ini_curvilinear_grid.F which
3476        is not necessarily any better than the current one...
3477    
3478    checkpoint40pre4
3479    o added re-initialisations of utrans,vtrans,rtrans in
3480      calc_common_factors which are crucial for TAF.
3481    o extended iMin,jMin range for calc_common_factors,
3482      calc_diffusivity
3483    o added option ALLOW_PASSIVE_TRACER
3484    o a few minor updates and fixes
3485    
3486    checkpoint40pre3
3487    o created calc_gtr1.F for gad package
3488    o split the_main_loop and re-introduced forward_step
3489    o some recomputations of nIter0 for TAMC
3490    
3491    checkpoint40pre2
3492    o Updated to latest branch of AJA, JMC
3493    o Added gradient check package
3494    o Added routines for passive tracer handling
3495    o Added carbon sequestration sensitivity experiment
3496    
3497    checkpoint39
3498     o Modifications and fixes to support TAMC
3499       (mainly missing or wrong directives)
3500     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3501       in addummy_in_stepping
3502     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3503     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3504     o Included following packages:
3505       cal: calendar
3506       exf: external forcing
3507       ecco: essential routines to control use of cal, exf
3508             (NB: this is not the full ECCO environment)
3509     o disabled some packages by default in genmake
3510    
3511    checkpoint38
3512     o see notes_c37_adj.txt
3513     o corrected wrong layer index in external_forcing_t
3514     o replaced the_main_loop/forward_step by the_main_loop
3515     o removed forceoutput from write_state
3516       (replaced criteria for initial/final state)
3517     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3518    
3519    checkpoint37
3520     o mdsio.F routine split and packaged in pkg/mdsio
3521       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3522        used unless genmake -disable=mdsio)
3523     o allow a more precise surface-geopotential gradient for the atmosphere
3524       taking into account the change in space of Alpha (=1/rho) at the surface.
3525     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3526       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3527     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3528       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3529       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3530     o Time-Average diagnostics defined as a pseudo package "timeave".
3531     o pickup files : old pickup (before c35) did not work with new code (c35
3532       and after) unless activating 2 commented lines in initialise-varia.
3533     o Non-Hydrostatic pickup file Pb fixed.
3534     o bug with Rigid-lid version (since c35) fixed.  
3535    
3536    checkpoint36
3537     o implement Crank-Nickelson barotropic time-stepping
3538     o recover Time-Average diagnostics
3539     o fix Pb in checkpoint (PR#19)
3540     o AIM become a standard package ; clean unused CPP_kees
3541    
3542    checkpoint35
3543     o subtantial rewrite of dynamics.f
3544     o allows staggered time-stepping
3545     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3546     o added bottom drag (linear + quadratic)
3547    
3548    checkpoint34
3549     o Modified exchange routines for correct reverse simulation.
3550     o Added verification output to comply with bug fix in impldiff.F
3551       as of c33 (exp2, natl_box).
3552     o Corrected store directives in dynamics.F
3553     o Corrected array boundaries in impldiff.F
3554     o Corrected array dimensions in gmredi.
3555       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3556     o Added routine GLOBAL_SUM_INT to global_sum.F
3557     o Added mdsio_gl.F for ECCO purposes.
3558    
3559    checkpoint33
3560     o Fixed bug in lower BC in impldiff.F
3561     o Fixed confusion about units of forcing arrays in FFIELDS.h
3562       namely Fu,Fv,Qnet,Qsw,EmPmR:
3563       - Removed verification/natl_box/code/external_fields_scale.F
3564         (did not differ from that in model/src)
3565       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
3566         (see FFIELDS.h for description)
3567       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
3568         kpp_calc.F and kpp_transport_t.F
3569       - Removed model/src/external_fields_scale.F and calls to it
3570       - verification/natl_box uses flux data with "atmospheric" sign so
3571         a special version of external_fields_load.F is used to
3572         change the data as it's read in. This way, the arrays
3573         have the right units and signs at all times tha a user could
3574         possibly use them.
3575     o Corrected genmake to delete a temporary file during configuration
3576    
3577    checkpoint32
3578     o Scaling of forcing fields moved from external_forcing.F to
3579       external_fields_scale.F, called directly after loading fields.
3580     o Surface relaxation terms added to surface tendency fields in
3581       extra subroutine.
3582     o impldiff.F changed to avoid storing by TAMC of huge intermediate
3583       fields.
3584     o Changes in GMRedi to comply with packaging structure.
3585     o Modifications and bug fixes in KPP package.
3586     o Verification experiment for KPP added (verification/nat_box/)
3587    
3588    checkpoint31
3589     o Packages interface brought in line with defined standard
3590       -> new routines packages_...F
3591       -> changes in initialise_fixed.F, initialise_varia.F
3592       -> enables initialisation interface for ECCO package
3593     o Rescaling of external forcing fields immediately after read
3594       (removed from external_forcing.F)
3595       -> new: surface_fields_scale.F
3596       -> affects ini_foorcing.F, external_fields_load.F
3597     o Computation of surface tendencies before tendency updates.
3598       -> new: external_forcing_surf.F
3599     o Change of variable names useGMRedi, useKPP, useECCO
3600     o Further changes in dynamics.F, impldiff.F for TAMC
3601     o Tested for experiments 0, 2, 4.
3602       - not yet tested for GMRedi.
3603       - not yet tested for KPP.
3604    
3605    checkpoint30
3606     o Updates for OBCs
3607     o New experiment for test OBCs (internal_wave)
3608     o New output.txt in verification/exp4/results/
3609     o Updates for KPP: calculation of viscosity corrected, new variables
3610       kpp_dumpFreq and kpp_taveFreq
3611     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
3612       and entry for T90 in genmake
3613    
3614    checkpoint29
3615     o packaged KPP and GM/Redi
3616    
3617    checkpoint28
3618     o Corrected initialization of hFacMin for difference vertical coordinates
3619     o Modified calculation of partial cell thickness to more robust algorithm
3620     o config_summary.F: replaced write_1D_... by write_0D_...
3621       read_write.F: added subroutines write_0D_...
3622     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
3623       included some initialisations required for TAMC.
3624     o routine calc_isoslopes: modified sqrt computation to make it
3625       differentiable for zero argument.
3626     o routines dynamics, impldiff:
3627       included store directives and tape key computations required for TAMC.
3628     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
3629    
3630    checkpoint27
3631     o fixed calc_isoslopes() to so that cancellation of terms in tensor
3632       formulation works properly with variable resolution.
3633     o restructured the calling tree between the_model_main() and dynamics()
3634     o split initialise() into initialise_fixed() and initialise_varia()
3635     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
3636       in new routine ini_psurf()
3637    
3638    checkpoint26
3639     o moved some #ifdef in optional routines to encompass everything
3640       except the argument declarations. This was using up some memory.
3641     o fixed macros like _ADT to work with both versions of Linux cpp
3642     o cleaned up some unused and uninitialized variables
3643       (helps when debugging with strict compile options)
3644     o split up CPP_EEOPTIONS.h into options and macros
3645       (macros are now in eesupp/inc/CPP_EEMACROS.h)
3646     o patch for 2 processor JAM mode
3647    
3648    checkpoint25
3649     o updates for OBCs and NH
3650     o dramatically reduced memory usage
3651     o added "JAM" routines for use on Artic network
3652     o parameterization of convection by implicit vertical diffusion
3653     o added a diagnostic of convective index
3654     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
3655       (this is was partly for OBCs and NH but also in anticipation of
3656        an explicit free-surface option)
3657     o initial state input files for U and V
3658    
3659    checkpoint24
3660     o Removed some spurious "REAL"s
3661     o Updated KPP to latest version from JPL
3662     o Added a COS(latitude) in horizontal viscosity
3663    
3664    checkpoint23
3665     o Added del^4 diffusion for salt and temperature
3666     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
3667    
3668    checkpoint22
3669     o Made many small changes: implicit none, format(i5), etc...
3670     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
3671    
3672    checkpoint21
3673     o Introduced new I/O package that supports direct-access records (mdsio.F)
3674     o Split-up mid-level I/O routines
3675     o Updated input data for experiments 0,1,2,4 and 5
3676     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
3677    
3678    checkpoint20
3679     o Tidied up open-boundaries some more
3680     o Added non-hydrostatic code
3681     o Fixed some input data
3682     o Modified MPI start-up to work in "coupled" context.
3683    
3684    checkpoint19
3685     o Tidied up directory structure for verification experiments.
3686     o Added new code for open boundaries.
3687     o Corrected advective terms near boundaries.
3688     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
3689     o Implemented free-slip/no-slip BCs and del^4 dissipation.
3690     o Split default parameters out of ini_parms.F into set_defaults.F.
3691    
3692    checkpoint18
3693     o Further changes for optional code generation with
3694       CPP - ugh!
3695    
3696    checkpoint17
3697     o Beginning to incorporating modularity
3698       for supporting atmos. and ocean configs.
3699     o Small changes for TAMC complinace
3700     o New ultra simple test case. Barotropic box
3701       configuration "exp0".
3702    
3703    checkpoint16
3704     o Minor changes to exchange routines to support
3705       accumulation in reverse mode. Adjoint of an
3706       assignment is an addition.
3707     o Changes to support compilation by TAMC (LR(1)
3708       syntax) and by g77 under Linux ( 72 character
3709       limit ).
3710    
3711  checkpoint15  checkpoint15
3712   Rewrote exchange routines to allow   Rewrote exchange routines to allow
3713   o General tile <-> tile connectivity.   o General tile <-> tile connectivity.

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