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revision 1.76 by jmc, Fri Jul 12 14:52:08 2002 UTC revision 1.994 by mlosch, Thu May 22 12:22:13 2008 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
8      mass points, when using mnc for output
9      - add runtime parameter (missing_value, missing_value_int) to override
10        default (which is the value of getcon('UNDEF'))
11    o pkg/mnc: prepare mnc for the actual use of missing values with the
12      diagnostics package: small fix in mnc_cw_readwrite.template and more
13      initialisation of never used fields
14      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
15      versions
16    o pkg/thsice/thsice_ini_vars.F added default initial values so that
17      thermodynamics sea ice solver does not blow up when some initial fields
18      are missing.
19    o move from external_forcing_surf.F to ini_forcing.F
20      the p-coord. hack consisting in using pLoad to set phi0surf ;
21      update output of tutorial_global_oce_in_p (affected @ truncation level).
22    o Freshen up a bit hs94.1x64x5, notably:
23      remove rotationPeriod and tRef=5*0. (adjoint only), and add
24      exactConserv=.TRUE.
25    o pkg/generic_advdiff:
26      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
27      applies to files where Temperature & Salinity 2nd Order moments are used.
28    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
29      this uses a dynamically allocated internal state data structure
30      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
31      and requires a fortran 90 compiler
32    
33    checkpoint59q
34    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
35       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
36    o Refresh tutorial_global_oce_biogeo, notably:
37      - change bathymetry (put back seamounts in ACC, use hFacs)
38      - change EOS (POLY3 --> JMD95Z)
39      - use Bryan-Lewis vertical diffusivity
40      - use multidimensional advection
41      - remove old virtual virtual in dic pkg, now done through ptracer pkg
42      - change a couple of parameters in dic pkg
43    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
44    o pkg/obcs: change default to OBCSfixTopo = .true.,
45      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
46      - replace "debugMode" with "debugLevel .GE. debLevB"
47    o implementation of TAF directives for gchem,cfc,dic
48    o remove "exp5" (replaced by tutorial_deep_convection).
49    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
50      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
51      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
52      --> changes results in exp4, seaice_obcs
53    o tutorial_deep_convection :
54      update the set-up and increase resolution and domain size ; start
55      from pseudo initial conditions = output at t=120mn in order to see
56      something happening when running testreport.
57    o pkg/seaice: add os7mp as an advection scheme
58                  add check for advection schemes
59                  add a flag for restoring T and S underneath sea ice
60    o pkg/my82: add netcdf-support and diagnostics
61    o thsice pkg:
62      - Now hsMax limits snow height by turning it into ice following
63        flooding scheme (and now conserving energy)
64      - Slight rewriting of the formula in thsice_calc_thick.F
65      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
66      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
67    
68    checkpoint59p
69    o gchem / dic / cfc :
70      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
71      - add new parameter files: "data.dic" & "data.cfc" ;
72      - various re-arrangement in initialisation & header file ;
73      - fix tutorial_global_oce_biogeo for multi-threaded test.
74    o pkg/dic: test for "pickup_dic" file when restarting ;
75      if no pickup-file, can restart with a re-initialised pH (same as it did
76      before) providing pickupStrictlyMatch is set to False.
77    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
78      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
79    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
80      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
81    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
82     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
83       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
84    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
85       scheme to use for vorticty-term ;
86     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
87       (with default selectVortScheme, return to original discretisation)
88     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
89    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
90    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
91      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
92      also fix diagnostics VISCAHW & VISCA4W.
93    
94    checkpoint59o
95    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
96    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
97      move a few statemens out the main loop into separate loops
98    o pkg/shelfice:
99      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
100        (kg/m^2/s), does not break tests, because in verification/isomip,
101        rhoConstFresh=rhoConst (by accident)
102      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
103      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
104        new file model/src/seawater.F, so that they are available for all pkgs.
105      - convert potential temperature into in-situ temperature. This changes the
106        isomip tests => update tests
107    o add a flag writePickupAtEnd (default=true) to be able to suppress
108      writing a pickup at the last timestep
109    o tools/mpack-1.6 :
110      - disable automake (not working) and autoconf (not needed).
111      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
112        also cleaner with much less compilation warnings.
113    o pkg/profiles:
114      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
115      (for "less than 32 characters name" compiler requirement)
116    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
117      conditions that have a different sampling frequency than S/T/U/V obcs
118    o pkg/diagnostics (stats-diags):
119      - fix global Min/Max in case 1 processor get only empty tiles
120    o genmake2: replace (4 times)
121         make genmake_tc_1.o >> genmake_warnings 2>&1
122      with
123         COMM="$CC $CFLAGS -c genmake_tc_1.c"
124         echo $COMM >> genmake_warnings
125         $COMM >> genmake_warnings 2>&1
126      to make genmake2 always see the value of CC as specified in the optfile.
127    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
128      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
129      - modify verification advect_cs test to test SOM-advection on CS-grid.
130    o pkg/ctrl:
131      - Rewrite of ctrl_map_ini_ecco.F,
132        introducing a generic routine (ctrl_map_ini_gen.F).
133      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
134    
135    checkpoint59n
136    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
137      number in dedicate array "hdiag":
138      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
139        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
140      - many small changes (integer format) for large number of diagnostics
141      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
142        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
143    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
144      usingSphericalGrid, this allows to define the rotated grid coordinates
145      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
146      geographical coordinates according to the inverse of the rotation defined
147      by the Euler angles, so that Coriolis parameter and online-interpolation by
148      exf works with the geographical coordinates on XC/YC/XG/YG.
149      Naturally, this feature does not work with all packages, so some
150      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
151      profiles), because there the coordinates are assumed to be regular
152      spherical grid coordinates.
153    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
154      - introduce isopycnal diffusion coefficient control.
155    o tools/adjoint_options:
156      - additional control vector components.
157    o pkg/mnc: have mnc create marginally meaning full coordinate variables
158      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
159    o pkg/mypackage:
160      - add example of read/write pickup for state-var ;
161      - add entry points to the main code for state-vars diags & write-pickup.
162    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
163      transitions for useExfYearlyFields
164      - add new subroutine that determines the file to read from for
165        use*YearlyFields = .TRUE. and .FALSE.
166      - add a verification experiment to global_with_exf that tests
167        useExfYearlyFields with USE_EXF_INTERPOLATION defined
168    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
169      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
170      subroutines (which could be generated from a template, because they are
171      almost identical), for now they are included in obcs_prescribe_read.F for
172      simplicity
173    o pkg/exf:
174      - add a little more diagnostic to exf_interp_read (in analogy to
175        mds_read_field, can be turned off with debugLevel < debugLevA=1)
176      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
177        ugly but fast by unrolling short inner loops, inserting a unroll=8
178        directive in routine lagran, and splitting a loop and making do while the
179        outermost loop (the latter requires the intoduction of index arrays)
180    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
181    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
182      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
183    o verification/seaice_obcs: updated for restart test and latest options
184    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
185      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
186      for now this is only available for the C-grid code and also within
187      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
188    
189    checkpoint59m
190    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
191      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
192    o gad_som : fix flux output (& diagnostics) to have same units as other  
193      advection scheme fluxes (was previously multiplied by deltaT).  
194    o added verification/seaice_obcs both to test seaice open boundaries
195      and to provide an example matlab scrpt for generating them
196    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
197    o pkg/salt_plume: clean up salt_plume_frac.F to
198      remove redundancy in PlumeMethod 1 and 4
199    o pkg/kpp: added saltplume diagnostics
200    o pkg/obcs and pkg/seaice:
201      - do not set uice and vice to zero when OB*icefile are unspecified
202      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
203      - moved seaice tracer obcs after call to seaice_growth
204    o pkg/salt_plume: added various options for salt plume depth
205      criterion and for vertical distribution of the salt
206    
207    checkpoint59l
208    o pkg/ptracers: new version of ptracers pickup:
209      read meta file and write only fields which are needed to restart.
210      ( same logic as main pickup file ; also using pickupStrictlyMatch )
211    o pkg/seaice:
212      - add timescale for melting due to warm mixed layer as a means of
213        setting SEAICE_availHeatFrac more conveniently
214      - add a CPP-flag/runtime parameter check for flooding algorithm
215      - reformulated availHeat in seaice_growth.F to be independent of AREA
216    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
217      unit changes
218    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
219    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
220      SX vector computer.
221    o pkg/seaice:
222      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
223        seaice forcing fields can now be read only through pkg/exf
224      - removed some unused halos
225    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
226    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
227      or U/VICE from U/VWIND before computing U/VSTRESS
228    
229    checkpoint59k
230    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
231      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
232    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
233      all experiments pass when compile with un-initialised var. checking option.
234    o added pkg/salt_plume
235    o script to test restart (for now, in MITgcm_contrib/jmc_script)
236    o pkg/seaice: new read/write pickup version.
237      read meta file and write only fields which are needed to restart.
238      ( same logic as main pickup file ; also using pickupStrictlyMatch )
239    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
240    o lab_sea.hb87: modify the domain & update output.hb87.txt :
241      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
242      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
243      process. Fixed here by closing the domain at the Northern boundary.
244    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
245    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
246      a set of consecutive levels in/from a 3-D array.
247    o pkg/ptracers:
248      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
249      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
250    
251    checkpoint59j
252    o in pkgs: dic, obcs, offline, rbcs:
253      standard way to compute coeff. for time interpolation between 2 time reccords
254      which retains full precision (& make results less dependent on compiler).
255      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
256    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
257      packages instead of reading ice cover and wind speed separately
258    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
259     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
260      to allow to compile customized code before the update)
261    o cleaning-up:
262      - fix CPP instruction syntax in pkg/obcs
263      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
264        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
265      - fix some threads issue in IO parts.
266    o pkg/dic:
267      - add tons of "_d 0" (--> much better testreports !)
268       and then update outputs of tutorial_global_oce_biogeo
269    o pkg/mom_fluxform:
270      add a special version of momentum advection intended to conserve momentum
271      next to a bathymetry step or a coastline edge. (default = off = #undef)
272    o new read/write pickup version:
273      - for now, only implemented for main (mdsio) pickup file.
274      - write out only what is needed to restart; merge pickup_nh , pickup_ph
275        and main pickup together.
276      - read meta file; read only what is needed to restart; stop if a field
277        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
278        if it make sense (even if the restart is not perfect).
279      - if no meta file, assume that pickup to read corresponds exactly to
280        a pickup that would currently be written.
281      - read pickup written in the old format (until checkpoint59i) if it
282        recognizes an old meta file (no field-list).
283      - add a meta file in exp. which starts from a pickup: 2 cases:
284        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
285         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
286        b) a meta file describing the content of the associated pickup file
287         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
288    o pkg/mdsio & pkg/rw:
289      - new routine to read a meta file ; new set of routine to read
290        Multiple-fields file (with meta file).
291    o added open boundary conditions capability for seaice
292        HSNOW, HSALT, UICE, and VICE
293    
294    checkpoint59i
295    o adjoint:
296      * fix multiDimAdvection adjoint
297        (partial recomputation problem by TAF for fVerT(:,:,kDown)
298        and comlev1 size definition (maxpass vs. max. number of tracers)
299      * verification/global_ocean.90x45x15 adjoint now tests
300        NLFS and multiDimAdvection using DST3 (=30)
301      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
302    o pkg/kpp: add "_d 0" to real constant (if missing);
303      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
304      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
305    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
306      for internal parameters related to restart process (formerly from PARAMS.h)
307      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
308    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
309      as argument. (only atm2d & obcs write_pickup have not yet been updated)
310    o pkg/monitor:
311      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
312      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
313      - account for deep Atmosphere factor and density factor (anelastic)
314    o added open boundary conditions capability for seaice HEFF and AREA
315    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
316      thermodynamics
317      - requires a little reorganization, which affects the testreport results
318        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
319        so that now the conservative form is tested
320      - add a few comments
321    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
322    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
323    o add new diagnostics to seaice: advective, diffusive fluxes (only for
324      multidim-advection, for scheme 2 they are not filled) and transports,
325      thermodynamic growth rates
326    o change units of EmPmR (inside the code, + within coupling interface)
327      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
328      Affects results @ truncation level (cg2d match) and update output of
329       experiments: lab_sea(6), global_ocean.90x40x15(10),
330      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
331      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
332      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
333      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
334    
335    checkpoint59h
336    o pkg/exf:
337      - improve vectorization by moving if-statement out of loops in
338        exf_mapfields, exf_radiation
339      - exf_bulkformulae.F: introduce 2D fields and vectorize code
340    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
341    o testreport:
342      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
343        monitor & update offline_exf_seaice exp. output.
344      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
345    o pkg/seaice:
346      - bug fix in the evp solver: boundary conditions were affected be
347        masking of zMax/zMin (changes results)
348      - minor bug fix in boundary conditions in seaice_calc_strainrates
349        (changes results for no_slip)
350      - seaice_lsr.F: make interpolation of eta dependent on boundaries
351      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
352      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
353        stress formulation and no-slip boundary conditions
354    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
355      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
356    o pkg/seaice: a first HSALT time stepping equation has been checked in
357    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
358      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
359      without requiring DO-IF statements
360    o pkg/thsice:
361      use continuous power-law function for partition of energy between lateral
362      melting/freezing and thinning/thickening ; old code using step function
363      still available with #undef THSICE_FRACEN_POWERLAW
364      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
365    o testreport: change AD testing : check against results/output_adm.txt
366      using same scripts as for forward test.
367    
368    checkpoint59g
369    o adjoint testing: in preparation for changing testreport:
370      - output format: cost and grad written on separated lines
371      - ad output results in directory "results" (instead of "results_ad")
372    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
373    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
374    o pkg/ecco: allow user defined cost function contributions
375    o testreport:
376      Allow to choose (per experiment) the list of tested output variables
377       and the main variable (used to issue a pass/FAIL ) ;
378      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
379      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
380      Also modify printing of summary:
381       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
382       b) echo the list of tested variables in the individual summary.txt of
383          each experiment.
384    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
385      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
386      (but still depend on the tile decompostion of the domain).
387    o pkg/seaice: change a discretization detail to make the B-grid code
388      "more symmetric". This change is likely to remove all "ridges/leads" that
389      where quasi-aligned with the grid in B-grid solutions. It may also be
390      the solution to the stress coupling issues with the B-grid.
391    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
392      remove .cvsignore from input dir. (since testreport no longer run here).
393    o pkg/thsice:
394     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
395     - fix reshaping of sea-ice just after advection:
396       melt all the ice only if ice-volume is too small.
397     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
398       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
399     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
400    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
401      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
402    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
403      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
404      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
405      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
406      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
407      -> update output.txt
408    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
409     this affects truncation error: -> update output.txt of exp:
410      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
411      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
412    
413    checkpoint59f
414    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
415    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
416      a bounded range (in forward mode)
417    o pkg/ecco, ctrl, autodiff and mom_common:
418     internal parameter controls, completements of implementations
419    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
420    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
421      (not seem any difference in testing results).
422    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
423       at face corners.
424    o pkg/generic_advdiff:
425     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
426      loop range indices for computing vertical advection tendency
427      and do the calculation in the interior only (no overlap) ;
428      for now, only implemented for SOM advection (to save CPU time).
429     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
430    o exch2 adjoint
431      First set of changes:
432      - add exch2 hand-written adjoint templates
433      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
434        This will require cleanup in pkg/autodiff/*.F
435        (changed routines currently kept separate in verif. code/)
436      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
437        that used to hide exch2 or cubed-sphere specific code
438        (commented via 'cph-exch2')
439    o pkg/seaice
440      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
441    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
442       output of global_ocean.cs32x15.thsice .
443    
444    checkpoint59e
445    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
446      for B-grid vector (not yet tested) and C-grid vector (<- only used
447      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
448    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
449      (#ifdef ALLOW_SALT_PLUME)
450    o gather_2d/scatter_2d: removed halo regions
451    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
452      scheme and the corresponding test case (under front_relax dir). For now,
453      only available with Skew-flux form and not yet tested in realistic set-up.
454      adjoint: store directives updated, but gradient checks deteriorated,
455      so maybe GM/Redi adjoint is now broken.
456    o seaice adjoint
457      * add AREA, HEFF, HSNOW as control variable
458        (should not change lab_sea results)
459      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
460    o pkg/seaice:
461      * added computation of saltFlux in seaice_growth;
462        For time being, sea ice salinity is assumed constant
463        contribution of snow flooding to freshening of sea ice is neglected.
464        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
465        defaults to 0.0 in order to maintain backward compatibility.
466        Typical values for SEAICE_salinity are 4 to 10 g/kg.
467      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
468      * added SEAICE_availHeatFrac, which specifies fraction of surface level
469        heat content used to melt or grow ice
470      * commented out cap of HICE: it helps keep ice thinner
471      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
472      * applied OBCS T/S mask to HEFFM sea ice mask
473    
474    checkpoint59d
475    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
476     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
477     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
478    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
479     and change default value of parameter "GM_Small_Number";
480     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
481       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
482       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
483    o pkg/ecco: cost function when applying pkg/smooth to controls
484    o pkg/ctrl: add forcingPrecond run time parameter
485    o pkg/seaice:
486     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
487     - fix bug in metric terms of u-equation in LSR solver (implicit part),
488       changes verification/lab_sea
489     - rearrange implicit part of u-equation in LSR solver to make it easier to
490       read, understand, and debug. This causes changes at the truncation level.
491     - fix (serious) bug in the boundary conditions (sign error in the implicit
492       part) of the LSR solver. Changes all LSR results.
493     - fixed problem with HSNOW initialization to avoid thick snow when AREA
494       is initilized with small values - does not change lab_sea results.
495     - added HsnowFile initialization capability
496    o pkg/smooth: addition to model/src and pkg/ctrl so allow
497     initialization of pkg/smooth and application to control vector
498    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
499    o dependencies: pkg/profiles requires pkg/cal
500    o pkg/profiles:
501     - added option ALLOW_PROFILES_GENERICGRID
502         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
503         that interpolation information (grid points and coefficients) is provided
504         within the netcdf input files.
505         -> sample matlab scripts can be found in MITgcm_contrib/gael
506         that allow you to prepare netcdf input files.
507     - also modified: cleaner include statements, cleaner error print statements,
508       cleaner stops when error, and more tests of the netcdf input files consistency.
509    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
510    o pkg/seaice:
511     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
512       requires a new routine: seaice_diagnostics_fill.F
513     - make sure that seaice does not move if not forced (pressure replacement
514       method, Hibler and Ip, 1995), changes results
515     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
516     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
517       It is turned off by default (=-1.), because it changes the results.
518     - make it possible to read AREA from a file, too.
519    
520    checkpoint59c
521    o add S/R and diagnostics for oceanic mixed-layer depth
522    o move GMRedi call after all vertical mixing schemes (including KPP)
523    o pkg/thsice:
524     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
525      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
526    o pkg/obcs:
527     - bug fix for balance code
528    o pkg/seaice:
529      - allow values of SEAICE_elasticParm > 1
530      - add new parameter SEAICE_evpTauRelax as an alternative
531        to SEAICE_elasticParm
532      - make lsr boundary conditions free slip (by default), changes result
533      - add code for no slip boundary conditions for lsr
534      - set minimum of zeta to zero (and not 4e8) (changes results)
535      - add a cap on AREA after advecting AREA if seaice_growth is not called
536    o change calculation of Visbeck K:
537      - no longer depend on tapering scheme; instead, compute slope (limited
538        by GM_maxSlope). this is equivalent to what was comuted before with
539        clipping or linear tappering.
540      - fix vertical averaging (wrong by 1/2 level)
541      - leave the old version (but will not be maintained) within
542        #ifdef OLD_VISBECK_CALC / #endif
543      - update output of exp. ideal_2D_oce
544    o change error catch in calc_r_star to improve vectorization
545    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
546      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
547    o adjoint:
548      Re-organized adjoint checkpointing according to Matt Mazloff
549      (but with modifs/completions/cleanups)
550      Storing is now bundled into large arrays to optimized I/O
551      (and second step in cleanup of the_main_loop)
552    
553    checkpoint59b
554    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
555      - export/import (between ocean & coupler) fields needed for ocean DIC.
556    o pkg/seaice:
557      - get rid of three more exchanges seaice_calc_viscosities (required
558        different loop boundaries in seaice_lsr and seaice_ocean_stress)
559      - bug fix in seaice_ocean_stress (update of lab_sea required)
560      - reduce loop boundaries to necessary minimum also in seaice_evp
561      - go back to the old way of computing deltaC/Z as the adjoint likes that
562        better
563    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
564      passive tracer to an Age Tracer) + update output.txt
565    o pkg/exf:
566      - implement A-grid / C-grid selection for wind-stress input files.
567      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
568      for now, in exf_bulk_largeyeager04.F only :
569      - change implementation for case where windspeed + 2. components wind-stress
570        are read-in. AND use rhoConstFresh to convert evap.
571    o pkg/seaice:
572      - use correct EXCH_UV for wind-forcing (on A-grid).
573      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
574        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
575    o pkg/exf:
576      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
577      EXF_INTERPOLATION:
578      - merge global_with_exf/code version of exf_interp_read.F
579        to the main code ;
580      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
581        reading the file ; Important: This options needs to be defined to recover
582        previous code.
583        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
584      - no longer loose real*8 precision along the way when using exf_iprec=64.
585    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
586      - change discretisation of evp-solver in order to avoid another exchange
587        (changes lab_sea) and clean up a little
588      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
589        help the adjoint (this also changes the results slightly)
590      - add a few "_d 0" where they had been missing in seaice_evp.F
591      - cleaning up: remove unused seaice_calc_rhs.F
592    o pkg/exf: some cleaning-up:
593      - change various "constants" into runtime parameters
594      - cleaned-up Large&Yeager04 routine which should eventually
595        replace exf_bulkformulae.F (changed names of S/R and CPP)
596        and merged various ALLOW_ATM_WIND options
597     only used with thsice pkg (in thsice_get_exf.F):
598      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
599        which are used when useStabilityFct_overIce=TRUE (= the default)
600      - change default values of ice & snow emissivity and scale downward LW
601        by ice & snow emissivity.
602    o pkg/thsice:
603     fix few little problems, in thsice_calc_thickn.F:
604      - growth vertically (and not laterally) if iceFrac == iceMaskMax
605      - melt only laterally if hIce < hThinIce (as the comments say)
606      and in thsice_extend.F:
607      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
608      - start to form ice as soon as the minimum ice-volume is reachable.
609     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
610      and cpl_aim+ocn
611    o pkg/kpp
612     - move computation of surface related input fields to KPP into a new
613       subroutine kpp_forcing_surf.F
614     - remove wrong (within bi,bj loops) EXCH calls.
615     - little cleaning (add argument myThid in last position, cvs header ...)
616     - for now, fix conservation problem by exchanging KPPviscAz (may not
617       be the best fix)
618    o pkg/seaice
619     - check for inconsistent evp parameter/cpp-flag combination
620     - remove leftover errIO flat for obsolete name list error handling
621    o OpenAD
622     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
623    
624    checkpoint59a
625    o pkg/seaice: some parameter clarifications and a little bit of clean up
626    o pkg/thsice: rename run-time parameters:
627       himin       -> hIceMin
628       himin0      -> hThinIce
629       hihig       -> hThickIce
630       i0          -> i0swFrac
631       transCoef   -> bMeltCoef
632       frac_energy -> fracMelting
633      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
634       with default values (for now) that do not change the results.
635      remove old version of thsice vars advection in pkg/seaice.
636    o in FFIELDS.h:
637      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
638      - make pLoad & sIceLoad always available (but still only used if
639         ATMOSPHERIC_LOADING is #define).
640    o pkg/kpp: replaced _KPP_RL with _RL
641    o bug fixes for vertical diffusivity computations when both KPP and
642        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
643        are no longer updating the vertical diffusivity array
644        (passed as argument) but are (re-) setting those arrays.
645    o pkg/seaice: fix bug in evp solver, while doing that
646      - change (improve?) discretization of stress computations for both
647        cgrid-lsr and evp solver
648      - add a new routine to compute strain rates
649      - the above changes lab_sea results
650      - add no slip conditions for evp solver (off by default), lsr-version
651        may follow
652      - fix exchange for shear at Z-points (does not change lab_sea)
653      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
654        (to force the user to pick a time step since there is not "safe" way
655        of choosing it)
656      - add principal stress diagnostics
657      - rearrange fields for evp a little to avoid having to call a: too many
658        exchanges and b: exchanges for stress trensor components which we do
659        not have.
660      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
661        of evp, complete rewrite for lsr case (latter is does not yet work
662        in all cases)
663    o pkg/kpp: add code to have mixing in shelf ice caverns
664      - add myThid to all kpp routines (long overdue)
665    
666    checkpoint59
667    o pkg/exf:
668      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
669        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
670      - move exf header files from lower_case.h to UPPER_CASE.h ;
671        add missing cvs Header & Name
672      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
673      - add namelist param. selectStressGridPosition, exf_monFreq
674      - retire many _CLIM routines, and remove data.exf_clim
675        + params moved to data.exf
676        + climsst, climsss now handled by exf_set_gen, i.e.
677          climss?period=0 refers to constant field,
678          climss?period=-12 to monthly forcing
679      - split up namelists in data.exf
680    o pkg/seaice:
681      - remove seaice_exch and seaice_exch_uv
682      - remove superfluous exchange of theta
683      - add myThid to seaice_budget_ocean/ice
684      - add new interface for atmospheric wind forcing (C-grid only)
685        + new routine
686        + two new field (taux, tauy for stress over ice)
687        + removed one global field (DAIRN) for C-grid case only
688    o pkg/thsise
689      - 2nd set of modifs for thsice adjoint in conjunction with exf
690    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
691    
692    checkpoint58y_post
693    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
694      vertical diffusivity, similar to that in MOM4; turned on using
695      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
696      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
697    o Added capability for 3D specification of background vertical diffusion
698      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
699      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
700      "data" file that contains the 3D vertical diffusivity coefficients.
701    o ice dynamics (pkg/seaice) with thsice thermodynamics:
702      - add code within pkg thsice to advect & diffuse sea-ice fields
703      similar to (and will replace) what has been added in  seaice_advdiff.F,
704      but: - conserving Mass, Heat & Salt.
705           - better when using non-linear advection scheme (not yet fully tested)
706           - can also be used in atmospheric set-up (for now, only the diffusion).
707    
708    checkpoint58x_post
709    o IO option for global-file compact format:
710      - add options when generating topology (utils/exch2/matlab-topology-generator)
711      - add I/O capability (pkg/mdsio).
712      - adapt utils/matlab/rdmds.m to read this format.
713      for now long-line format not yet supported by pkg/mdsio (& exch2).
714    o shelfice: add a few diagnostics
715    
716    checkpoint58w_post
717    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
718      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
719      (and replace horiVertRatio in NH code).
720      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
721                         and tutorial_plume_on_slope (sensitive to truncation)
722    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
723      directly to drive seaice model (C-grid only)
724    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
725     - reintroduce computation of wind from stress,
726     - compute tau (in exf_bulkformulae.F) from windstress averaged to
727       mass points to avoid tau = 0
728     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
729    o rdmnc.m: make it work with "global" files created with gluemnc
730    o rdmnc.m : some improvements in dealing with singleton dimension
731      (tested on all testreport mnc output files).
732    o genmake2: disable pkg/profiles if netcdf test fails.
733    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
734    o move call to cal_readparms up to make calendar parameters/variable available
735      to all packages
736    
737    checkpoint58v_post
738    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
739      useDynP_inEos_Zc tested.
740    o pkg/exf: changes to properly interpolate/mask/scale initial fields
741    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
742      and portions thereof.  See read_cs.txt for description and examples.
743    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
744      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
745      following the great-circle arc between those 2 points.
746    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
747      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
748    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
749     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
750     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
751     - still needs work (not working with some options ; efficiency to improve)
752       and serious testing.
753     - use this scheme for temperature & salinity in 2 advection test exp.:
754       advect_xy & advect_xz, respectively.
755    
756    checkpoint58u_post
757    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
758    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
759    o testreport: add option "-skipdir" to skip some test.
760    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
761      momentum calculation.
762    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
763    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
764      remove checkpoint.F and the_correction_step.F (no longer used);
765      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
766    o add option (linFSConserveTr) to correct for tracer source/sink due to
767      Linear Free surface
768    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
769    o pkg/thsice: fix reading mnc-pickups
770    
771    checkpoint58t_post
772    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
773    o pkg/mdsio:
774     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
775       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
776       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
777     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
778     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
779       either MDS_READ_FIELD or MDS_WRITE_FIELD )
780     - new S/R (to replace MDSWRITEMETA), which allows to write more
781       informations (variable names, time ...) to meta files.
782     - modify rdmds.m to give back the meta file content.
783    o pkg/diagnostics: change vertical interpolation to be safer, and more
784       flexible (define p-levels to interpolate to in data.diagnostics);
785      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
786       diagnostic pointer.
787    o pkg/seaice: more cleaning up of seaice_growth, added many comments
788    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
789    o fix multi-category seaice:
790     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
791       SEAICE_MULTICATEGORY
792     - fix short wave heat flux
793    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
794       and allow to use EVP solver. Change forward lab_sea: test both EVP
795       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
796    o Initial check-in of lab_sea adjoint
797      (very similar to natl_box_adjoint/code_seaice)
798      * used C-grid and EVP solver
799      * used KPP, GM/Redi
800      * uses inAdExact=.TRUE.
801      * gradient checks fail for both ADM and TLM
802        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
803        f.d. gradients actually seem more problematic than ADM, TLM gradients;
804        issue is related to forward mismatch between g77 an ifort
805    o pkg/seaice: overhaul of thermodynamics
806     - growth.F and groatb.F are replaced by new routine seaice_growth.F
807     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
808     - move a few global fields out of SEAICE.h into seaice_growth.F and
809       make them 2D (FICE/QNETO/ ...)
810     - remove FO (it is the same as QNETO)
811     - introduce a few local fields to avoid modifying external fields such
812       as atemp, etc.
813    
814    checkpoint58s_post
815    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
816      changed exf_set_gen.F so that
817        genperiod=0 means input file is one time-constant field and
818        genperiod=-12 means input file contains 12 monthly means
819    o CG2D: use pre-computed solver main-diagonal (stored in common block);
820      this affects truncation error ; generate new output file for exp. which
821      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
822        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
823        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
824        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
825        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
826        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
827    o start implementation of deep-atmosphere and anelastic formulation
828    o verification: remove 2nd copy of input files and use script "prepare_run"
829      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
830    o mom_common/vecinv/fluxform: fix a few initialisation isssues
831    o profiles: fix for multithreaded case
832    
833    o diagnostics: rename few diags:
834      s/'PRESSURE'/'RCENTER '/g
835      s/'TICE    '/'oceFreez'/g
836      s/'TAUX    '/'oceTAUX '/g
837      s/'TAUY    '/'oceTAUY '/g
838      s/'SWFLUX  '/'oceQsw  '/g
839      s/DIFx/DFxE/g
840      s/DIFy/DFyE/g
841      and add few ocean-forcing diagnostics:
842      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
843    o modifications to pkg/seaice/growth.F and budget.F, which change results of
844      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
845      as actual snow thickness.  It now refers everywhere to effective snow
846      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
847    
848    checkpoint58r_post
849    o modifications to pkg/seaice/growth.F, which change results of
850      lab_sea experiment: fixes pertain to melting snow over open water, to
851      masking EVAP under sea ice, and to using the correct AREA variable for
852      computations of EVAP, PRECIP, HSNOW, and GHEFF
853    o add ability to read bathy, salt, and theta using MNC (off by def)
854    o add flooding algorithm and advection of HSNOW for pkg/seaice;
855      both are turned off by default and do no change any results
856    o seaice advection with pkg/thsice: a step toward the use of non-linear
857      advection scheme, but #ifdef or commented out for now (requires more EXCH).
858    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
859      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
860      in natl_box (affects results @ truncation level: update output.txt)
861    o multi-threading and IO:
862      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
863      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
864        (needed to work with SingleCpuIO): tested in all verif. exp.
865    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
866      affects the results (but none of the verification test uses this scheme).
867    o Adding some pkg/diagnostics capability to pkg/seaice
868      (will certainly be subject to changes)
869    o ctrl: adding new control variables:
870      lwflux, lwdown, evap, snowprecip, apressure, runoff
871    
872    checkpoint58q_post
873    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
874      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
875      high_res_cube configuration by 4% on Columbia.
876    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
877      add (in global_with_exf/code) a version of EXF_INTERP_READ without
878      dynamical allocation (seems to work in multi-threaded).
879    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
880      single CPU io) so that TAF does not have to see EESUPPORT.h
881    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
882    
883    checkpoint58p_post
884    o obcs: stop if obcs is used with useCDscheme = .true.
885    o shelfice:
886     - fix a sign error so that no slip at shelfice interface works
887     - remove stop for combination non-hydrostatic code and shelfice. That does
888       not mean, that the results are correct, but at least they are numerically
889       stable
890    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
891    o added adjoint exch routined for all exch*3d* routines
892      and updated flow directives
893    
894    checkpoint58o_post
895    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
896      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
897    o change controling S/R for writing pickup file (new S/R do_write_pickup)
898      and clean-up reading/writing of pickup files.
899    o fix local version of read/write pickup (NH part) in rotating_tank/code
900    o simplify EXCH interface:
901     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
902     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
903    o added the regrid package
904    o shelfice:
905     - add a simple boundary layer scheme to reduce noise
906     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
907    
908    checkpoint58n_post
909    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
910       local variable (not in common block).
911    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
912      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
913      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
914        to work with SingleCpuIO.
915    o add "_d 0" to real constant of pkg/cfc subroutines ;
916       update exp. cfc_exemple & tutorial_cfc_offline output files.
917    o multi-threading and IO:
918      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
919        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
920      - barrier before and after reading.
921      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
922      - avoid using MDS_WRITELOCAL for LAND pkg output.
923      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
924        common-block variables ; Allows multi-threading with master-thread IO.
925    o change default MAX_NO_THREADS from 32 to 4 ;
926      and stop cleanly when MAX_NO_THREADS is too small.
927    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
928    
929    checkpoint58m_post
930    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
931       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
932    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
933       keep global_ocean.90x40x15 (for AD testing) with former secondary test
934       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
935    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
936        add MITgcm_tutorials (= code + all the tutorials)
937    o ecco, option to compute cost for total ssh (mean+anom)
938    o consistent with addition of ptracer and ssh in pkg/profiles
939    o profiles: adding ptracer and ssh
940    o testreport: change multi-test output-file name
941      (from output.txt.{name} to output.{name}.txt)
942    o profiles: now ok for mutli-tiles case
943    o seaice: add 4 parameters for different advection schemes for area,
944      (effective) seaice thickness, enthalphy, and snow height. Their default
945      is the standard parameter SEAICEadvScheme
946    o calc_gw:
947     - add cosFacU in zonal viscous flux (harmonic.visc.).
948     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
949       of tutorial_plume_on_slope.
950    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
951    o calc_gw: true flux-form, account for horizontal grid spacing.
952      update rotating_tank results, but not plume_on_slope (affected at
953      truncation level, 11 digits).
954    
955    checkpoint58l_post
956    o calc_gw:
957     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
958     - remove side-drag for now (need to fix it); update plume_on_slope results.
959     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
960    o commit code to make SST/SSS weights spatially variable
961      (based on either variable in-situ or variable initial T/S weights)
962    o pkg/ecco:
963      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
964        now based on horizontally varying weights wthetaLev, wsaltLev
965      * cost_averagesflags now returns year indices in addition to day, month
966      * sflux balance is performed on annual basis
967        (sflxumm, sfluxmm2, bal_sfluxmm)
968      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
969        including separate counting and multipliers
970    o pkg/rbcs
971      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
972    
973    checkpoint58k_post
974    o testreport:
975     - always build in dir. "build" (if not there, mkdir build instead of building
976       & running in input)
977     - run in dir run (if it exists), in build otherwise.
978     - call prepare_run (if input/prepare_run exists)
979     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
980    o pkg/exf modifications to interpolation and rotation routines for more
981       reasonable treatment of North Pole singularity: for tracers North Pole
982       value is set to northernmost zonal-mean value, for zonal velocity it is
983       set to zero, and for meridional velocity it is set to northernmost value.
984    o pkg/exf/exf_check_range.F
985     - add tile index to diagnostics and move stop statement to the very
986       end of the routine.
987    o pkg/diagnostics: (diagnostics_main_init.F)
988      define title of isomorphic variables according to the current config.
989    o pkg/thsice with pkg/seaice dynamics:
990    - fix domain of computation (interior only, required for exf) and do exchanges
991    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
992    o towards a standard way of dealing with multi-threading in MONITOR
993      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
994    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
995       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
996    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
997    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
998    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
999       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1000    o tracer advection:
1001     - clean-up and simplify calc_common_factors.F
1002     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1003       advection subroutine (but still not used within DST advection S/R)
1004    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1005    
1006    checkpoint58j_post
1007    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1008      from file (collects calls previously in FORWARD_STEP)
1009    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1010    o adjoint store dir. adjusted accordingly
1011    o genmake2
1012      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1013    
1014    checkpoint58i_post
1015    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1016      on wind stress (SEAICEstressFactor defaults to 1.)
1017    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1018      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1019    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1020      on CS-grid: no longer loosing mass.
1021    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1022    o pkg/ggl90: fix sloppy output and fix a bug
1023    o pkg/seaice: added SEAICEuseEVPpickup parameter
1024      - Set to false in order to start EVP solver with
1025        non-EVP pickup files when using SEAICEuseEVP
1026      - fix sign error in diffusion in seaice_calc_rhs
1027    
1028    checkpoint58h_post
1029    * Modifications for bottom topography control
1030      o replace hFacC by _hFacC at various places
1031      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1032      o add non-self-adjoint cg2d_nsa
1033      o update autodiff support routines
1034      o re-initialise hfac after ctrl_depth_ini
1035      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1036    * Adding verification for 5x5 box (4-layer) bottom topography control
1037    
1038    checkpoint58g_post
1039    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1040       used for mean seasonal cycle, mean diurnal cycle); add an example
1041       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1042    o pkg/ggl90:
1043      - add parameter (minimum surface kinetic energy)
1044      - fix bug (avoiding division by zero)
1045    o couple pkg/thsice to pkg/seaice:
1046      - modify advection in seaice to accomodate new scalar fields to be advected
1047      - only muliDimAdection scheme work with seaice/thsice
1048      - mapping of thsice-variables to seaice-variables, back and forth
1049      - does not break the verification experiments, but does not give the
1050        desired results either
1051    o pkg/seaice
1052      - make (default) second order advection a bit less confusing?
1053    
1054    checkpoint58f_post
1055    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1056      to pkg/seaice):
1057      - new routines thsice_map_exf and thsice_get_exf provide the interface
1058      - add an additional formal parameter to thsice_solve4temp
1059    o pkg/exf:
1060      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1061      - correct Stefan-Boltzmann constant
1062      - new parameter for longwave surface emittance
1063      - separate some stuff from exf_bulkformulae into new routines  
1064        exf_radiation, exf_wind
1065      - add new parameters and constants: longwave emissivity for ocean, ice
1066        and snow, evaporation parameters over ice
1067      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1068        either wind from stress or stress from wind
1069    o pkg/thSIce:
1070    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1071    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1072       and THSICE_CALC_THICKN
1073    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1074    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1075      to make debugging easier.
1076    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1077    o pkg/bulk_force:
1078      - clean-up comments and parameters ;
1079      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1080    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1081      generate new output for test-experiment: aim.5l_cs.thSI
1082    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1083      testreport accordingly
1084    
1085    checkpoint58e_post
1086    o SEAICE_CGRID adjoint done
1087    o R_STAR adjoint implemented.
1088      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1089      * need to sort out init. of h0facc, etc.
1090    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1091      to be able to use it in pure forward.
1092    
1093    checkpoint58d_post
1094    o upgrade simple test-experiment to tutorial example:
1095     step.1: duplicate the experiment and (step.2) will remove the old copy.
1096      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1097      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1098      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1099      tutorial_global_oce_biogeo    <- copy of dic_example
1100      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1101      tutorial_plume_on_slope       <- copy of plume_on_slope
1102      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1103      tutorial_global_oce_optim     <- empty for now (David ?)
1104      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1105     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1106    o correct a sign problem in cost_scat.F
1107    o obcs and ptracers: fix boundary conditions for advections schemes
1108      with larger stencil
1109    o thsice adjoint: start
1110    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1111      completeness
1112    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1113      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1114    o ptracers adjoint:
1115      * avoid extensive recomputatations
1116      * fix missing re-init. of gptr (missed by TAF)
1117    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1118      me to turn off the excessive output to STDOUT that this package produces
1119    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1120      and add those terms in Vector-Invariant formulation.
1121    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1122      if the control period (xx_hfluxperiod etc) is 0
1123    o in profiles pkg, clean routines and fix details
1124    o in ecco pkg, reading ssh data:
1125      fix problem in case the model does not start at iter0=0
1126    o fix mnc-pickup/restart for ptracers
1127    o new package prifiles:
1128      code to compute profile-based cost by Gael Forget
1129      (modifs in ecco, ctrl, autodiff)
1130    o Benign bug fix in initialization (spotted by M. Mazloff) of
1131      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1132    
1133    checkpoint58c_post
1134    o adjoint: finish NLFS adjoint and provide reference output in
1135      verification/global_ocean.90x40x15/results_ad_nlfs
1136    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1137      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1138      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1139      with SEAICE_CGRID defined.
1140    o move calendarDumps from "data" to "data.cal" and clean-up the code
1141      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1142    o add useEXF & useCAL flags (for now, set in hard-coded way)
1143    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1144      (were missing in NH mode, and wrong in quasihydrostatic mode).
1145      waiting for Chris updated version of calc_gw to add those CALLs.
1146    o fix bug in quasihydrostatic S/R ;
1147      add a test for this option: global_ocean.90x40x15.qshyd
1148    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1149      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1150    o add on/off flag useOffLine for package OFFLINE
1151    o seaice:
1152      - modify advection so that it works also on the C-grid
1153      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1154        problem in multi-tile runs with C-grid
1155      - add flags for clipping ice velocities and/or masking solver forcing
1156      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1157        C-grid solver
1158      - added a few comments to seaice_diffusion.F
1159      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1160        are now exclusive)
1161      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1162        required re-ordering the code a little:
1163       + make DAIRN global variable (defined in SEAICE)
1164       + move computation of the viscosities eta and zeta into a new separate
1165         routine (because I need to recompute them in seaice_ocean_stress.F)
1166    
1167    checkpoint58b_post
1168    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1169      update output.txt of exp. aim.5l_cs.thSI
1170    o various mnc cleanups and improvements:
1171      + shrink lookup tables by factor of ~4
1172      + better error reporting when running out of lookup space
1173      + able to handle longer path/file names (up to 500 chars)
1174    o adjoint:
1175      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1176      - TBD: "hidden" mom_vecinv recomp. in dynamics
1177    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1178     (allow to differentiate between forcing components using new integer flags:
1179      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1180     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1181    o ecco
1182      - enable trend removal from SSH anomaly obs.
1183    o adjoint
1184      - a fix for PmEpR when #undef EXACT_CONSERV
1185      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1186      - try to fix "hidden" recomp. in forward_step for NLFS
1187        (NLFS seems broken sometimes after I checked it in)
1188    o seaice:
1189     - add c-grid version of the dynamic solver:
1190       + three new routines that are the c-grid substitute lsr, dynsolver
1191         and ostres
1192       + put a few fields that were local to dynsolver into global common
1193         blocks, so that I can move the computation of stresses etc into
1194         seaice_lsr (saves coding but may break the adjoint).
1195     - replace more hardwired parameters by runtime parameters
1196     - add ice masks that mask the rhs of the implicit solvers where there
1197       is no ice (commented out in seaice_dynsolver, because i am not sure
1198       if this works properly), eventually this should replace the clipping
1199       of ice velocities in seaice_dynsolver to +/-40cm/s.
1200    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1201      include it only where its needed
1202    o move balancing of fluxes before the call of external_forcing_surf
1203    o seaice:
1204      - correct units of turning angles (now they are really in degrees)
1205      - move computation of GWATX/Y out of main routine into dynsolver
1206      - initialize GWATX/Y in seaice_init
1207    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1208      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1209    o seaice: add runtime flags for turning angles (default to zero)
1210    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1211      and trend from exf forcing and ctrl control adjustments
1212    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1213      (since checkpoint57x_post)
1214    o change the default rotation period to 86164.s = the Earth rotation
1215    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1216      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1217    o seaice advection: add code for choosing between the default (2nd order
1218      central differences) and multiDim advection schemes provided by
1219      pkg/generic_advdiff
1220    o seaice:
1221      - removed all references to SEAICE_GRID.h fields from
1222        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1223        (cubed-sphere configuration will change a little)
1224      - grid computations in seaice_init are obsolete now.
1225      - cleaned up code a little so that is easier to read (hopefully).
1226      - added new (better?) discretizations of default advection and diffusion
1227        (turn on with SEAICEuseFluxForm)
1228      - replace 1 in 3d global fields by kSurface in growth.F
1229      
1230    checkpoint58a_post
1231    o seaice:
1232      - bug fix in advect.F
1233    o shelfice:
1234      - separate shelfice load anomaly from pload (breaks with time
1235        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1236        Its default is 0., but it may be computed more cleverly from (unknown)
1237        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1238        done offline. A good approximation of the pressure load anomaly is
1239        necessary to avoid large initial adjustment processes underneath
1240        deep-reaching shelfice.
1241      - small fix in ISOMIP shelfice_thermodynamics
1242      - add more sophisticated thermodynamics of Hellmer (1989), this is
1243        now the default
1244      - give a few constants more intuitive names
1245    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1246      if bulk formulae are used in long integration (especially EmPmR). Turn
1247      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1248      if balancePrintMean, the imbalance that is substracted is printed to
1249      STDOUT.
1250    o fix bug (typo) in obcs_apply_eta.F
1251    o add a new package shelfice which enables us to model the circulation
1252      underneath shelf-ice with draughts of hundreds of meters.
1253     - works
1254     - to do: + include improved thermodynamics
1255              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1256                instead of new field kTopC
1257              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1258                instead of new field R_shelfIce and new code in ini_depth.F
1259                and ini_mask_etc.F?
1260              + adjust vertical mixing schemes?
1261    o seaice pkg:
1262     - add a cpp-flag to include a simple formula for a salinity dependent
1263       freezing point of sea water at the surface
1264     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1265       meridional stresses are now different (and hopefully correct)
1266    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1267       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1268       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1269    o pkg/diagnostics: add options and parameters for regional-statistics
1270       diagnostics ; define regions by reading a region-mask from a file
1271       (might add other options later)
1272    o pkg/bulk_force:
1273     - add option and parameters to use AIM surface-flux formulae.
1274     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1275       others forcing fields (defined in PARM05, parameter file "data") are loaded
1276       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1277     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1278     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1279     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1280       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1281     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1282    
1283    checkpoint58
1284    o add "--embed-source" option to genmake2 which, when the supporting
1285      tools can be compiled (as determined by genmake2) will turn on the
1286      embed_files package which then embeds the entire MITgcm source code
1287      (*.[fFhc] + Makefile) used for the build within the executable
1288      - requested by CNH but off by default
1289      - adds a paltry <9MB to the mitgcmuv executable in most cases
1290      - only writes the output when useEMBEDSRC in eedata is true
1291    o clean up 3-dim. relaxation codes:
1292      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1293      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1294      * Thanks to Tom Haine for testing!
1295    
1296    checkpoint57z_post
1297    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1298      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1299    o fix the pickup behavior for obcs in combination with ptracers
1300    o fix a bug in ptracers_external_fields_load
1301    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1302      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1303    o transfered surface NH pressure to eta field (if exactConserv).
1304    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1305         and update lab_sea output.txt file.
1306    o completing 3-dim. relaxation code: additional term
1307         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1308      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1309      * At compile time, in "EXF_OPTIONS.h" set
1310          #define  ALLOW_CLIMTEMP_RELAXATION
1311          #define  ALLOW_CLIMSALT_RELAXATION
1312      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1313          tauThetaClimRelax3Dim = 15552000.0,
1314          tauSaltClimRelax3Dim  = 15552000.0,
1315      * 3 cases:
1316          1) Use a constant-in-time 3-dim. field
1317          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1318          3) Real-time relax. to time-evolving prescribed field
1319    o Adding Laplacian-type smoothness constraint on
1320      initial and boundary (forcing) controls (ic, bc)
1321      * enable at compile-time via
1322        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1323      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1324      * Absolute scale somewhat unclear so far
1325      * no area weighting was included since no other cost term does so far
1326    
1327    checkpoint57y_post
1328    First step for a NLFS adjoint
1329    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1330    o new init. routines for calc_r_star, calc_surf_dr
1331    o still need to deal with ini_masks_etc
1332    o testreport seemed happy
1333    checkpoint57y_pre
1334    
1335    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1336    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1337    o add new offset feature to offline pkg (plus minor cleanup)
1338    o cfc fixes for final year of integration
1339    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1340      be in GCHEM_OPTIONS).
1341    
1342    checkpoint57x_post
1343    o fix testreport Pb in multiple test experiment.
1344    o cleanup our namelist syntax in verification:
1345      - make it more F95 standards compliant (some work still needed)
1346      - allows the vast majority of our tests to work with gfortran
1347    o Non-Hydrostatic:
1348     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1349     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1350    o Allow to apply AB on T,S rather than on AB(gT,gS):
1351     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1352     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1353       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1354     - need a "clever" read_pickup to restart from the other AB formulation
1355    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1356    o remove some unused variables (reduces number of compiler warnings)
1357    o adjoint
1358      * Disable useVariableViscosity for adjoint for time being
1359        (there are a number of extensive recomputations)
1360      * Initialize certain variables needed for adjoint
1361    
1362    checkpoint57w_post
1363    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1364                 fix the singleCpuIO RS version of MDSWRITEFIELD
1365       and add a WARNING if using globalFiles=T with multi-processors.
1366    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1367      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1368    o tracer advection scheme:
1369      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1370       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1371       was not very convenient).
1372      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1373       (further tests needed for the implicit DST & Flux-Limiter schemes).
1374    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1375      and sRef for convenience, handy, when you want to initialize
1376      ptracers in a large domain with a constant non-zero value. Also,
1377      untangle ptracers_init.F a little.
1378    
1379    checkpoint57v_post
1380    o change dome exp. to use variable viscosity in side-drag terms.
1381    o remove all the files from the cfc_offline test since they are now
1382      incorporated into tutorial_cfc_offline which has been producing
1383      identical results for a few days of testing
1384    o add new parameter: sideDragFactor to enable half-slip-side BC
1385      and change side-drag S/R to use viscosity from mom_calc_visc
1386      (can switch back by setting sideDragFactor=0.); affects results at
1387      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1388       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1389    o vorticity & strain are now computed without masking, to account for
1390      no-slip-side BC in variable viscosity calculation ; mask is applied
1391      anyway later on, before computing advection/coriolis terms.
1392    o modify exp4 to test new obcs support for reading from external files
1393      and for passive tracers
1394    o fix behavior of ptracers_monitor when monitor output is written to a
1395      netcdf-file; still not independent of monitor.F (writes in the same
1396      file).
1397    o change default value of tRef (put a uniform, meaningful value for ocean
1398      & atmos) and initialize sRef (was missing, as Martin mentioned).
1399    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1400      to be proportional to enstrophy dissipation length.  Thus,
1401       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1402      This is now consistent with Smagorinsky and with the manual.
1403    
1404    checkpoint57u_post
1405    o OBCS and PTRACERS: add open boundary support for passive tracers
1406      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1407        OB-values from file; this is not different from the way theta and salinity
1408        are treated
1409      - however, Orlanski-radiation conditions are not supported, and the model
1410        will stop if you use pTracers and Orlanski at the same time.
1411      - beefed up the rountine obcs_external_fields_load: now only those open
1412        boundary values are overwritten with values from files for which there
1413        are really files, otherwise the OB-fields remain untouched. This makes
1414        it possible to use different OBs at different ends of the domain (as
1415        with EXF)
1416    o reduce number of exch calls in shap_filt (s2).
1417    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1418      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1419    
1420    checkpoint57t_post
1421    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1422    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1423      same truncation, independent of the face number: affects affects several
1424      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1425    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1426      note that biharmonic viscosity + no-slip was not tested in any experiment.
1427    o fix bug in non-linear free-surf side-drag ; generate new output for
1428      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1429    o make mnc honor the writeBinaryPrec flag for most kinds of output
1430    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1431    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1432      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1433    o add brackets in multi-terms sum to get same truncation, independent of
1434      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1435      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1436    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1437      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1438      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1439      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1440      Suggested values of viscosity parameters found in mom_calc_visc.
1441      Many new viscosity diagnostics available.
1442    
1443    checkpoint57s_post
1444    o Add clearing-house for viscosity calculations, mom_calc_visc and
1445      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1446      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1447      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1448      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1449      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1450      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1451      ViscAhStrain and viscAhTension are now retired.
1452    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1453    o In response to JMC's bug report, genmake2 now ignores any soft-links
1454      that it finds in the *current* directory when searching for files.
1455      Soft-links found in any other source directories will still work as
1456      they did before.
1457    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1458      a C routine to unlimit the stack size
1459    o mnc-ify pkg/aim snapshot vars
1460    o mnc-ify pkg/land as requested by Daniel
1461    o various changes to mnc including:
1462      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1463      - output can now be grouped so that all files within a group
1464          change the ITER portion of their names in lock-step together
1465      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1466          and works with both EXCH1 and EXCH2 (but needs more testing)
1467      - writing works for all verification test cases w/ g77 on Linux
1468    
1469    checkpoint57r_post
1470    o make MNC variable initialization happen earlier
1471    o add diagnostics for (almost) each term of the momentum Eq.
1472    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1473    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1474    o remove MINIMAL_TAVE_OUTPUT option ;
1475      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1476    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1477      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1478    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1479    o add time-dependent SST, SSS control
1480    o cost terms in ecco/ modularized (new cost_generic.F)
1481    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1482    o new infrastructure for seaice model vs. obs misfits in seaice/
1483      * driver from the_main_loop.F is seaice_cost_driver.F
1484      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1485      * gradient check in Exp. 6a of natl_box_adjoint/
1486    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1487      (see README file)
1488    
1489    checkpoint57q_post
1490    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1491    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1492      - bug was reported by Jean-Michel and Ian Fenty
1493    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1494      update exp. cpl_aim+ocn output.
1495    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1496      Needed for high-res. runs with large global files
1497      to be able to limit tapelev size
1498    o Changed some tests for adjoint:
1499      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1500      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1501      * global_ocean.90x40x15/ back to default 3-level checkpointing
1502    o Modifications to enable scripted COMMON to MODULE conversion
1503      * verification/OpenAD/code/ has necessary scripts and description;
1504      * converts, compiles and runs successfully;
1505    
1506    checkpoint57p_post
1507    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1508    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1509      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1510    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1511    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1512      (was already the case for dissipation with mom_vecinv,
1513       and also the case for grad.PhiHyd when staggered-timeStep)
1514      This will allow to put dissipation out-off the AB time-stepping.
1515     Unfortunately, affects truncation error. Update output of exp. that "fails"
1516      (cg2d matching number) and leave the others for later: front_relax(10),
1517      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1518      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1519    
1520    checkpoint57o_post
1521    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1522      (2) its ready to be documented during the 20050801 DocFest
1523    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1524      for ideal_2D_oce and lab_sea on linux_ia32_g77
1525    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1526      in global1x1_tot/code_seaice_adj to access indices 32, 33
1527      (worth another tag)
1528    
1529    checkpoint57n_post
1530    o adding precip control xx_precip 32
1531    o adding swflux control xx_swflux 33
1532    o Replacing 10 forcing penalty cost routines by 1 generic.
1533    o Implementing partitioning in time-mean and variable adjustment
1534      for atmos. state.
1535    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1536    o in natl_box_adjoint:
1537      * updated exp 1 to 10
1538        (but does not have time-mean vs. variable split results yet)
1539    o updated global1x1/*_seaice_adj/
1540      to incorporate latest changes
1541    o enable useSingleCpuIO for mdsio vector routines
1542      (applies in particular to tapelev I/O)
1543    o removed inefficient K-loop in all active_file*control*.F
1544    
1545    checkpoint57m_post
1546    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1547      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1548    o pkg/exch2: filling of face-corner halo regions is optional
1549      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1550    
1551    checkpoint57l_post
1552     tag before updating tutorials (pre-release-2)
1553    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1554       for output and interpolation of input fields onto model grid)
1555    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1556       Affects results of exp. rotating_tank ; update output.txt.
1557    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1558          and taking the square quantity and/or using a fraction-weight field.
1559    o fix aim_diagnostics_init.F mate numbers.
1560    o add mnc output capability to diagnostics/diagstat and update
1561      our cvsignore files for the ACSII output generated
1562    
1563    checkpoint57k_post
1564    o lab_sea now uses diagnostics package and provides a suite of
1565      new EXF diagnostics output.
1566    
1567    checkpoint57j_post
1568    o exf
1569      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1570        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1571        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1572      * extended diagnostics output
1573        - now includes all EXF variables
1574        - hs, hl moved to common block
1575        - separate S/R for diagnostics, called after ctrl vector is added
1576        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1577        - EXFqnet contains true Qnet (i.e. includes qsw)
1578      * updated verif. lab_sea, global_with_exf
1579      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1580        to ensure that diagnostics sees a true EXFqnet
1581    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1582    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1583      several times with different frequencies.
1584    o mnc-ify the thsice package as requested by Daniel Enderton
1585      - the monitor--MNC output needs work
1586      - many attributes need to be added (most are currently blank)
1587    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1588      - many attributes need to be added (most are currently blank)
1589    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1590    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1591    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1592      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1593         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1594    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1595     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1596    
1597    checkpoint57i_post
1598    o Diagnostics package was changed: diagnostic allocation is now deactivated
1599      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1600    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1601      add 1rst Order upwind vertical Shear.
1602    o add a quick fix for A/B checkpointing in OFFLINE mode
1603    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1604      end-run around the C/Fortran linking horror in eesup/src/timers.F
1605    o added pkg/runclock: allows user to terminate run based on wall clock
1606    o added non-hydrostatic scaling parameter: nh_am2
1607    o pkg/my82: futile attempt to make results compiler-independent by adding
1608      some "_d 0", etc. no effect.
1609    o for mnc output, fill the 'T' coordinate var with myTime and create a
1610      separate 'iter' variable for iteration count
1611    o pkg/diagnostics:
1612      add new capability: output of Global/Regional & per-level statistics ;
1613      tested against monitor output (including land & thSIce) on various exp.
1614    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1615    
1616    checkpoint57h_done
1617      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1618      data.diagnostics, data.gchem, data.ptracers) is done.
1619    
1620    o pkg/diagnostics: prepare for Global/Regional statistics.
1621      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1622    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1623      and rename it: DIFFERENT_MULTIPLE
1624    
1625    checkpoint57h_post
1626    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1627    o pkg/diagnostics: change output frequency, now in seconds (instead
1628      of Nb of iterations). This requires to change data.diagnostics.
1629    checkpoint57h_pre
1630    
1631    o in mnc, let the user create the output dir if both mnc_outdir_date
1632      and mnc_outdir_num are false
1633    o add fflags() to pkg/diagnostics which allows one to specify, on a
1634      per-file basis, the file precision [default behavior is unchanged]
1635    o added diagnostics to pkg/kpp, including computation of mixed layer
1636      depth based on a temperature/density criterion
1637    o updated verification/natl_box to test the new pkg/kpp diagnostics
1638    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1639    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1640    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1641      not mnc -- this mistake was found by JMC and is now corrected
1642    
1643    checkpoint57g_post
1644    o add Adams-Bashforth 3rd Order time stepping:
1645      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1646      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1647    checkpoint57g_pre
1648    
1649    o make lambda[Theta,Salt]ClimRelax spatially varying
1650      (default remains spatially uniform constant based on tau)
1651    o added new control variables
1652      * init. uVel, vVel, etanN
1653      * lambda[Theta,Salt]ClimRelax
1654    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1655      (suggested by G. Forget)
1656    
1657    checkpoint57f_post
1658    o add parameter "baseTime" = model base time = time at iteration zero
1659      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1660      account for baseTime shift
1661    o move Coriolis arrays from PARAMS.h to GRID.h
1662    checkpoint57f_pre
1663    
1664    o mnc-ifying the seaice package
1665    o introduced an alternative length scale calculation for use in the limiting
1666      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1667    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1668    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1669      as well as grad(vort3).  Made it compatible with both approximate form
1670      for the cubed sphere and full form of these gradients.  Added flag
1671      useFullLeith to select between approximate and full form.  
1672    o add "d0" in getcon.F to reduce differences between compilers/platforms
1673      update output.txt of exp. fizhi-gridalt-hs
1674    o change port_rand funtion to allow to set the seed.
1675    o fix obscure MNC bug involving conversion between reals and integers
1676      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1677        new version is now more standards-compliant
1678    o adjoint-related modifications
1679      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1680      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1681      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1682    
1683    checkpoint57e_post
1684    o Adding eddy stress controls a la Ferreira et al.
1685    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1686    
1687    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1688      update output.txt of exp. fizhi-gridalt-hs
1689    o add more "Z" dimensions and associated coordinate vars to MNC
1690    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1691    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1692      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1693      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1694      months and years.  Requires pkg/cal.
1695    o diagnostics: add pickup functionality
1696      - off by default for backwards compatibility
1697      - current version only uses MDSIO -- MNC will be added
1698    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1699    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1700    
1701    checkpoint57d_post
1702    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1703    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1704      output from the diagnostics package
1705    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1706    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1707      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1708    o add coordinate variables to the MNC output from the diagnostics package
1709    o change MNC-flags default value: true when useMNC=TRUE
1710    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1711      the ability (off by default) to read the grid information using MNC
1712    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1713    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1714    o do snap-shot diagnostics at the middle of the time-interval (instead of
1715      at the end).
1716    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1717      new test for AIM with thSIce + slab-ocean
1718    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1719    o move state variable diagnostics to the beginning of the time step ;
1720      (note: still needs some work specially for snap-shot diagnostics)
1721      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1722    
1723    checkpoint57c_post
1724    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1725    o generate new output.txt files on faulks with g77 & the new -ieee option
1726    checkpoint57c_pre
1727    
1728    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1729      update output.txt of exp. global_ocean.90x40x15
1730    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1731      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1732    o add saltFlux(+File) forcing capability with periodicExternalForcing
1733    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1734    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1735    o improvements for the MNC output from DIAGNOSTICS:
1736      - correct handling of the unlimitied dimension
1737      - all dims now have associated coordinate variables
1738      - variables located at U, V, and Corner ("Z") points are now written
1739        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1740        *all* data points are output
1741    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1742    o added pkg/seaice/seaice_monitor.F
1743    o mdsio_readfield.F can now read files visible only to master MPI process.
1744    o pkg/seaice: some test code for ice-modified ocean stress
1745    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1746      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1747      spurious negative numbers for precipitation and humidity.  Will cause
1748      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1749    o pkg/ctrl/
1750      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1751        May be enabled via doPackDiag
1752      *  introduce z-scaling of
1753         + gradient (doZscalePack) and
1754         + control (doZscaleUnpack)
1755    o pkg/mdsio/
1756      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1757      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1758    
1759    checkpoint57b_post
1760    o simplify options in diagnostics_fill arguments (remove weird combinations)
1761    o fix MNC coordinate variables so that they now contain per-face index
1762      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1763      general, EXCH2 grids are only aligned to a "local" coordinate system
1764    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1765    o Implement instantaneous output within pkg diagnostics:
1766      setting a negative frequency in data.diagnostics produces
1767     "snap-shot" output (as opposed to time-average if freq > 0)
1768    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1769      NOTE: change ptracer diagnostics name: use 2 characters to work with
1770            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1771    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1772      becomes the coordinate variable for the 'T' dimension
1773    o add CF-style coordinate variables to MNC
1774      - just a first cut:  numbers are meaningless on the cubesphere and
1775        missing along the T axis but otherwise it works!
1776    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1777    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1778    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1779      this is based directly on what the model compute, so that the content of
1780      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1781    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1782    o clean up build options files for SunOS, in particular
1783      - remove -traditional from xmakedepend
1784      - change -xarch=v9 to -xarch=native for f77
1785      - restore use of make (not gmake)
1786      - add CC=gcc if using g77
1787    o changes per discussion of AM, JMC, & EH3 today:
1788      - move redundant "grid" variables out of "state" -- in preparation of
1789        creating proper CF-style coordinate variables and in recognition
1790        that any/all grid variables can be easily copied (eg. w/NCO) from
1791        the grid files into any of the other NetCDF files
1792      - *always* output grid variables with MDSIO (this will eventually be
1793        changed)
1794      - output MNC grid file if useMNC is true
1795    o every instance of _END_MASTER() has been found and replaced with
1796      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1797      preprocessors
1798    o re-arrange diagnostics pkg initialisation:
1799     - allow each package to extend the available diagnostics list
1800     - add some checking and fix small problems (multi-threaded, ...)
1801     - new S/R diagnostics_fill (replace fill_diagnostics):
1802       look through the short list of active diag. (instead of the long list)
1803       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1804    
1805    checkpoint57a_post
1806    o this set of changes restores TAMC compatibility
1807      tested for global_ocean.90x40x15 adjoint on trough
1808      (what a pain)
1809    
1810    checkpoint57a_pre
1811    o some modifs in tools/build_options for sunos
1812    o call ctrl_pack for ctrl at end for optimcycle=0
1813    
1814    checkpoint57
1815    o add horizontal bi-harmonic viscosity for vertical velocity
1816      - new parameter viscA4W (defaults to viscA4)
1817      - affects only non-hydrostatic code
1818      - to be done: no-slip lateral boundary conditions
1819    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1820    o implement Implicit Vertical advection for pTracers
1821    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1822      (implemented also for implicit vertical diffusion & advection)
1823    o OBCS: extend application of tracer open boundary conditions
1824      to a strip beyond the boundary of width Olx/Oly
1825    o add call monitor to TAF set of required calls (flow directives)
1826      and include in natl_box_adjoint
1827    o untangle a few ifdefs related to cost, ctrl, autodiff
1828      untangel a few ALLOW_ECCO_OPTIMIZATION
1829    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1830      (theta2, salt2 in ecco_cost_weights)
1831    
1832    checkpoint56c_post
1833    o OBCS as control variables
1834      - update ctrl_ad_diff.list, obcs_ad_diff.list
1835      - remove balance of obcs controls from default
1836      - fix index bug nobcs in ctrl_init
1837      - fix dummy fields filen in ctrl_pack
1838      - add dummy weights for obcs
1839    o lsopt: comment out fort.94 output
1840    o optim:
1841      - remove unnecessary header files
1842      - adjusted namelists
1843      - add xerbla.F to Makefile
1844    o exf:
1845      - multiple modifications of exf_check_range
1846      - unit change in exf_init_runoff from [m/year] to [m/s]
1847    o mdsio:
1848      - i/o-vector change debugLevel from debLevA to debLevB
1849    
1850    checkpoint56b_post
1851    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1852      is called from DO_THE_MODEL_IO
1853      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1854      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1855      - clean up PTRACERS_WRITE_TIMEAVE a little
1856    o add another verification experiment that tests both the cfc-pkg and
1857      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1858      reactive tendencies treated inline with regular timestepping
1859    o testreport previously did a lousy job of comparing small numbers, so
1860      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1861      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1862      testreport.
1863    o ptracers_monitor: bug fix for MPI
1864    
1865    checkpoint56a_post
1866    o GCHEM: finish reorganizating the package
1867      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1868        (introduces another 3D-array for each passive tracer, but only if
1869        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1870        gchemTendency is not needed because the timestep is done separately)
1871      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1872      - GCHEM is now---more or less cleanly---separate from PTRACERS
1873      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1874        so clear to me how that should be done in a general way.
1875    o CFC: improve formatting of output in CFC_ATMOS
1876    o PTRACERS:
1877      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1878        that ALL experiments with ptracers enable can be checked. This makes
1879        GCHEM_MONITOR obsolete.
1880      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1881        monitorFreq
1882      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1883    o add PTRACERS (PTR0[1-5]) to testreport output
1884    o exf_check_range:
1885      * default changed to .TRUE.
1886      * will check values for niter0 if debLevA, every timestep if debLevB
1887      * STOP in exf_check_range if 'out of range'
1888      * range chosen generous to allow for potential extema
1889      TBD: a version with stricter range
1890           permitted range would be runtime parameters
1891    o GMredi:
1892      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1893      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1894      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1895    o GCHEM:
1896      - move call to GCHEM_FORCING_SEP, so that it is now called before
1897        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1898      - introduced a useGCHEM runtime flag and applied it everywhere.
1899      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1900        this flag is now only visible within GCHEM-pkg routines.
1901      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1902        be replaced by a 3D array that is computed before thermodynamics; for
1903        this, the tracer ID iTracer had to be included into the parameter list
1904        of ptracers_forcing
1905      - set up forward_step to call gchem_forcing, that will replace
1906        gchem_forcing_int in ptracers_forcing
1907      - cleaning up
1908    o small cleaning of exch2: remove files that are also in eesupp/src
1909    
1910    checkpoint56
1911    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1912    o mnc: cleanup "full" files--fixes out-of-memory problem
1913    o ECCO-GODAE
1914      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1915      * fully merged and updated from SIO code
1916        windstress sign change affects
1917        - exf_inscal_[u/v]stress
1918        - sign of xx_tau[u/v] adjustments
1919        - signs in cost_scat
1920      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1921      * natl_box_adjoint updated and compressed
1922      * 2-level checkpoint switch added
1923        (tested in EXP. 1 of natl_box_adjoint)
1924      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1925    o SVD
1926      * first complete, non-hacked version for SVD calculations
1927      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1928        performed via direct access files admtlm_vector.it????
1929        (via ctrl_[un]pack)
1930      * optimcycle is used for ARPACK iteration counter
1931        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1932      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1933        and add linear transforms where necessary
1934      * controls are initial/final SST, SSS (can be extended; need to check
1935        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1936    o mdsio: filename info to both stderr, stdout
1937    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1938      from sign change
1939    
1940    checkpoint55j_post
1941    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1942      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1943    o add consistent build directories and .cvsignore files to verification
1944    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1945    o make all subroutines 30 or less characters in length for certain older
1946      compilers to work (a thorough search only turns up two routines in
1947      pkg/ptracers)
1948    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1949      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1950    
1951    checkpoint55i_post
1952    o change arrays for total vertical diffusivity (2.D if explicit,
1953      3.D if implicit) ; each ptracer uses its own background value.
1954    o added mnc/NetCDF output capability to ocn_compon_interf
1955      - added bits to verification/cpl_aim+ocn so that it can run on
1956        ITRDA and other clusters without the mpirun "-wd" option
1957    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1958      configuration
1959    o give MNC the ability to create additional files rather than
1960      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1961      - the default is just less than 2GB which is a practical limit
1962        on many systems
1963    o Compute the non-local term using either KPP vertical diffusivity (=default)
1964       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1965    
1966    checkpoint55h_post
1967    o add verification test "vermix"
1968    o remove all the *_ioinc flags and replace with the single global
1969      outputTypesInclusive flag
1970    o allow to set a vertical profile of vertical diffusivity for T & S
1971    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1972    o useMNC moved from data.mnc to data.pkg
1973    
1974    checkpoint55g_post
1975    o Renaming carbon AD experiments to comply with testreport conventions
1976    o Updating adjoint of Held-Suarez hs94.1x64x5
1977    o Fixing directives for non-ECCO forward_step, after ECCO directives
1978      have been fixed to avoid recomp. of do_oceanic_phys
1979      Works well for global_ocean.90x40x15,
1980      but recomp. issue remains for carbon
1981    o Updating adjoint output for natl_box_adjoint after
1982      pkg/ecco has been modified (see taga c55d_post)
1983    
1984    checkpoint55f_post
1985    o rename to timeave_init_fixed
1986    
1987    checkpoint55e_post
1988    o some delicate re-shuffle of store directives to avoid one
1989      extra call of do_oceanic_physics
1990      affects ecco_the_main_loop.F, do_oceanic_physics.F
1991      checkpoint_lev1_directives.h
1992    o NB: this may break global_ocean adjoint temporarily,
1993      but it is clear how to fix it. Will do later, need this now.
1994    
1995    checkpoint55d_post
1996    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1997    o ecco_cost_weights is modified to 1x1 runs
1998    o modifs to allow observations to be read in as
1999      single file or yearly files
2000    o enable to read exf forcing fields as either
2001      single file or yearly files (flag useExfYearlyFields)
2002    checkpoint55d_pre
2003    
2004    o switch between 2-level and 3-level checkpointing
2005    o add ability of MNC to write local and "partial" (eg. 2D slices where
2006      the full 3D field is never actually stored) arrays to NetCDF files
2007      with the correct (that is, the complete multi-dimensional) set of
2008      array indicies
2009      - used in mom_vecinv() to write the diagFreq output
2010      - tested (demonstrated) in verification/aim.5l_cs
2011    o further mnc-ification
2012      - add verification/lab_sea to the list with mnc setups
2013      - fix undefined mnc v-names in cd_code
2014      - add kpp to mnc output (both snapshot and timeave)
2015    o non-hydrostatic code
2016      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2017        in calc_gw.F
2018      - defaults to viscAh
2019      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2020        friction or Leith) in non-hydrostatic mode, as long as there is
2021        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2022    o pkg/cost
2023      extend simple cost functions to treat time mean quantities
2024      (T,U,V) via cost_accumulate_state from cost_tile
2025    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2026        be 2 times larger than the minimum size the advection scheme requires.
2027        now get a perfect conservation of salt in advect_cs test-exp (updated)
2028    o GGL90 (Gaspar's TKE mixed layer)
2029      - add horizontal diffusion of TKE, requires exchanges in
2030        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2031        default. In OPA there is no horizontal diffusion of TKE but the
2032        mixing coefficients are computed from a horizontal average of TKE of
2033        6 points or so. I think that diffusion has a little more physical
2034        justification.
2035      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2036        was in vain)
2037      - mask tke-variable in ggl90_init
2038    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2039    o fix biharmonic diffusion on CS-grid.
2040    o more obcs stuff
2041      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2042        for reading boundary values. This routine is called from
2043        obcs_prescribe_read
2044      - updated obcs_check
2045      - changed sponge layer relaxation parameter units for days to seconds
2046      - turned off sponge layer by default
2047      - changed argument list of OBCS_CALC to myTime+deltaTclock
2048      - fixed about 35 bugs in obcs_external_fields_load
2049    
2050    checkpoint55c_post
2051    o obcs stuff
2052      - new runtime flags useOBCSprescribe, useOBCSbalance
2053      - re-arranged obcs_calc
2054      - moved exf_getobcs to obcs_prescibe_read
2055        obcs_prescibe_read is called after ORLANSKI stuff
2056        and independent of it (executable can contain all).
2057      - updated obcs_check
2058      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2059        These may be necessary only if tangential velocities are
2060        prescribed at OB, not sure, needs testing.
2061    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2062      which simplifies the calls and passes the ifc check-bounds test
2063    
2064    checkpoint55b_post
2065    o add a 2D scalar, Z location, exchange_2 routine.
2066    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2067      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2068      affects advect_cs results (for the wrong reason): update output.txt
2069    o use a more standard discretization for biharmonic viscosity ;
2070     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2071      affects results of dome set-up: update output.txt
2072    o fix gad_advection.F (CubedSphere part), back to version 1.23
2073    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2074    
2075    checkpoint55a_post
2076    o merged code to
2077      * prescribe/read time-dependent open boundaries
2078        (works in conjunction with exf, cal)
2079      * sponge layer code for open boundaries
2080      * each boundary N/S/E/W now has its own CPP option
2081        (healthy for the adjoint)
2082    
2083    checkpoint55
2084    o up-to-date adjoint of previous breaks
2085      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2086      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2087      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2088      - carbon: * remove tr1-related adjoint verification
2089                * add ptracer as control variable
2090    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2091      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2092    
2093    checkpoint54f_post
2094    o in verification/carbin/ remove experiment related to
2095      ALLOW_PASSIVE_TRACER (array tr1 etc)
2096      code_ad/ input_ad/ results_ad
2097    
2098    o add two new packages
2099      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2100        + subject to optimization (memory)
2101      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2102        + subject to reordering (many GOTOs in the original code)
2103        + so far opps is called for every (i,j) point, and then operates in
2104          the vertical; one may want to reorder the scheme in order operate in
2105          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2106          fields)
2107    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2108      - all verification tests compile and run with linux_ia32_g77
2109      - defaults are compatible with current input files--nothing
2110        should change if you were not previously using MNC
2111      - MNC output has been added in numerous places (eg. timeave)
2112        but there are still a few writes not yet do-able with MNC
2113        (this is in progress)
2114      - flags now allow for either/or/both use of MDSIO and MNC and
2115        documentation will soon follow
2116      - numerous small formatting cleanups for ProTeX
2117    o add version info (via BUILD_INFO.h) to MNC and stdout
2118    
2119    checkpoint54e_post
2120    o add two new packages
2121      - pp81 (Packanowski and Philander, 1981), Richardson number and
2122        stratification dependent mixing
2123      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2124      - these scheme operate in a similar manner as KPP (without ghat, of
2125        course), however there is only one diffusivity that is used for both
2126        temperature and salinity (and passive tracers)ç
2127    o add offline package
2128    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2129      provided by Stephanie Dutkiewicz
2130    o genmake2: add ability to search for C compilers and cleanup test output
2131      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2132    
2133    checkpoint54d_post
2134    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2135    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2136      leading to additional shift by 5 days each year of integration
2137       (i.e. leading to considerable offset over the years)
2138    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2139    o start with no AB and no initial filtering (staggerTimeStep):
2140      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2141    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2142      (external loading & cpl import/export stay in forward_step.F)
2143    o update coupling interface to work with new staggerTimeStep
2144    o change MDSIO ptracers_pickup.
2145    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2146    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2147    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2148    
2149    checkpoint54c_post
2150    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2151      this affects (truncation error) output.txt of test-exp:
2152       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2153    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2154    o change Qnet to always be the net heat flux, (+upward).
2155      affects (truncation error) output of natl_box exp.: updated
2156    o define the max number of passive tracers in PTRACERS_SIZE.h
2157    o start to test mnc routinely in exp0
2158    o add sea-ice loading (sIceLoad) as a new forcing field.
2159    
2160    checkpoint54b_post
2161    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2162       impressive on Altix and Opteron systems)
2163    o diagnostics can now write NetCDF files through the mnc package
2164    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2165    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2166    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2167      affects (truncation error) output of lab_sea & natl_box exp.: updated
2168    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2169    
2170    checkpoint54a_post
2171    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2172    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2173    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2174    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2175      + internal_wave (shift in writing cg2d_ini_res)
2176    checkpoint54a_pre
2177    
2178    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2179      - modified verification/lab_sea and natl_box_adjoint accordingly
2180    
2181    checkpoint54
2182    checkpoint53g_post
2183    o prepare splitting of thermodynamics: store convect.counter in common block
2184    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2185      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2186    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2187    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2188    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2189    o restore adjointability
2190    
2191    checkpoint53f_post
2192    o modifications that affect AIM experiment results (update output.txt):
2193      - no advection of S at top interface Nr (pkg/generic_advdiff)
2194      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2195    o AIM pkg:
2196      - include stability function into surf.Flux derivative relative to Tsurf
2197      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2198    
2199    checkpoint53e_post
2200    o merged cylindrical coord configuration
2201    o added rotating_tank experiment
2202    checkpoint53e_pre
2203    
2204    checkpoint53d_post
2205    o faulks upgraded: re-generate output.txt that have changed:
2206       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2207    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2208    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2209    o added Sadourny discretization of Coriolis
2210      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2211      - re-enabled use of omega3 (useAbsVorticity)
2212    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2213      vector-invariant equations
2214      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2215    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2216      hopefully without new bugs
2217      - still to do: biharmonic friction for non-hydrostatic w
2218    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2219    o regenerated output for global_ocean_ebm (using -ieee)
2220    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2221      of mom_common/
2222      - simple re-arrangement of instructions within computing loop
2223    checkpoint53d_pre
2224    
2225    checkpoint53c_post
2226    o new version of coupler for AIM+thSIce and Ocean models
2227     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2228     - land: change Evaporation of snow
2229     - aim with thSIce: fix bug in snow-precip.
2230    o changes to calc_gw.F
2231     - bug fix for w^2 term near the bottom boundary
2232     - (hopefully) improve the lateral slip boundary condtions for use with
2233        partial/looped cells
2234      - because the bug fix changes two verification experiments anyway (exp5
2235        and plume on slope), change the lateral boundary condition from half slip
2236        to the value of no_slip_sides
2237    o ebm package wasnt quite up to the parallel task. Fixed that.
2238    o Adjoint of EBM package + verification
2239      * TLM OK
2240      * ADM not sufficient accuracy yet (needs further testing)
2241    
2242    checkpoint53b_post
2243    o Commiting new energy balance model to repository
2244      * package is pkg/ebm
2245      * verif. is verification/global_ocean_ebm
2246      * references are in ebm_driver.F
2247    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2248    C        Global thermohaline circulation. Part I:
2249    C        Sensitivity to atmospheric moisture transport.
2250    C        J. Climate 12(1), 71-82
2251    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2252    C        Global thermohaline circulation. Part II:
2253    C        Sensitivity with interactive transport.
2254    C        J. Climate 12(1), 83-91
2255    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2256    C        Destabilization of the thermohaline circulation
2257    C        by atmospheric eddy transports.
2258    C        J. Climate 7(12), 1870-1882
2259    o Will need long integration testing.
2260    checkpoint53b_pre
2261    
2262    o created pkg/mom_common in preparation for variable viscosity code
2263    o renamed and split ini_mnc_io
2264    o pkg/land: only liquid water can diffuse or run-off
2265    o AIM using land: soil wetness availability account for snow
2266    o added printMapIncludesZeros to EEPARMS namelist
2267    
2268    checkpoint53a_post
2269    o restore TAMC compatiility for exf_constants.h
2270      (no usage of _d in .h)
2271    o Additional storing in KPP in an attempt to fix
2272      TAMC problem with adjoint of KPP code.
2273      (no success...)
2274      Identical code works fine with TAF.
2275    o Fixed verification/natl_box_adjoint experiments.
2276      Initial conditions for Experiments 4 and 5 are now
2277      set to "SEAICE_initialHEFF=0", which is more reasonable,
2278      and hence gives results closer to that of Experiment 2.
2279      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2280    
2281    checkpoint53
2282    o stable checkpoint with up to date adjoint
2283      TLM tests only run for 1st grdchk at the moment. Its unclear if
2284      this is a code problem or a problem with resetting code for g_
2285      variables that is being autogenerated wrong.
2286      Otherwise:
2287       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2288       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2289         are both still in chaos following their security messes.
2290    
2291    checkpoint52n_post
2292    o various build (mostly genmake2) changes including:
2293      - ability to build/run more easily within Cygwin and MacOS X
2294      - more complicated Makefiles with a stronger dependence on Gnu Make
2295    o pkg/seaice modifications
2296      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2297        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2298        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2299      - changed proxy for geostrophic velocity and updated
2300        verification/lab_sea/results/* accordingly
2301      - removed ADI dynamic solver from pkg/seaice
2302      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2303        they caused a segmentation fault under certain circumstances
2304      - removed unused field WATR
2305    o bug fix in exf-package:
2306      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2307         now reflect that.
2308    o small fixes in the cal-package:
2309      - set reference date to first of January for the 'model'-calendar
2310      - failing of cal_CheckDate in cal_FullDate now actually results in a
2311        warning
2312    o small modifications in exf-package to increase flexibility:
2313      - change climtempfreeze from a constant to a runtime parameter that
2314        is specified in data.exf_clim (default = -1.9)
2315      - introduce runtime parameter windstressmax (default = 2.0) that is
2316        specified in data.exf
2317    o fix in pkg/thsice:
2318      - update Evap (Tsf changes) to be consistent with Latent heat flux
2319      - maintain snow precipitation unchanged (even if Tsf >=0).
2320     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2321    
2322    checkpoint52m_post
2323    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2324      this does not change any of the results, because myIter=0 in swfrac always
2325      lead to jwtype=2 (the default anyway), but the call makes little sense
2326      as a default
2327    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2328    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2329      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2330    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2331    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2332    o extending useSingleCpuIO option to work with new exch2 I/O format
2333      - old-style, missing-tile I/O is still accessible by defining CPP
2334        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2335    o monitor package can write to NetCDF files and/or STDOUT
2336    o fix re-definition bug in MNC_GRID_INIT_ALL()
2337    o doc/api_reference added
2338      - a framework for building an API Reference Manual using all
2339        the "protex" comments embedded in the code
2340      - see pkg/generic_advdiff, pkg/mnc for examples
2341    o MNC:
2342      - make myThid the last argument for all subroutines
2343      - new default for the grid files: NO halos
2344      - add useMNC and other run-time flags
2345      - separate per-file-group handling of the unlimited dimension
2346      - early initialization of MNC w/ flags read at the eeboot stage
2347        and lookup tables set in initialize_fixed
2348      - write all MNC output to a freshly-created directory
2349    o thermodynamics sea-ice (thsice) is now tested with testreport.
2350    o test exp. advect_cs: use the standard cs32 grid ; update output.
2351    o Added functionality to grdchk:
2352      pick global i,j,k position (or nearest wet) where to perform check.
2353    
2354    checkpoint52l_post
2355    o new land formulation:
2356      a) use ground enthalpy as prognostic variable to ensure exact
2357         energy conservation.
2358      b) account for water temperature and for latent heat of freezing
2359         in all processes (rain, run-off, ground storage)
2360      c) compute surface and ground temperature implicitly.
2361    o aim_v23 modification for new land model:
2362      a) Treat separately land / ocean / sea-ice surface fluxes
2363         to allow implicit computation of land & sea-ice surface temp.
2364      b) add snow precipitation.
2365    checkpoint52l_pre
2366    
2367    o fix problem (when 1 tile is empty) in min/max monitor.
2368    o fix bug in timeAve (u,vZetatave in common block)
2369    o no restoring terms under ice for pkg/seaice
2370    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2371    o bug fix for pkg/seaice pickups
2372    o change MNC call locations and add coordinate attributes
2373    o mask vorticity at the corner ; affects global_ocean.cs output
2374    o fix ini_curvilinear_grid ; test CS experiments with mpi
2375    o aim.5l_cs: modify sea-ice fraction input file ; update output
2376    o exf: Adding simple range check routine for exf fields after read
2377    
2378    checkpoint52k_post
2379    o removed top-level directory "diags"
2380      - we migrated these functions to pkg/timeave a long time ago
2381    o fixed bug introduced in pkg/monitor
2382    o accuracy ctrlprec = 32 insuffient for gradient checks using
2383      averaged fields (I/O via cost_averages)
2384      -> use ctrl.h in active_file*.F to control I/O precision.
2385    o paramter list of CALL ADTHE_MAIN_LOOP
2386    o added initial do_the_model_io to ecco
2387    o set all ...Freq to zero after cost_final
2388      taveFreq, dumpFreq, pChkptFreq
2389    o MAIN and ECCO differentiability restored
2390    
2391    checkpoint52j_post
2392    o fix nchklev in tamc.h for global_ocean...
2393    o Bringing flow and store directives up-to-date
2394    o Really weird thing!
2395      call do_the_model_io from the_main_loop with parameters
2396      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2397      TAF places a faulty re-call of initialise_varia
2398      after cost_final call which should not be there!
2399    checkpoint52j_pre
2400    
2401    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2402      error messages
2403    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2404    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2405      debug output
2406    o modfied mdsio_writefield.F to handle non-global files under exch2
2407    o update AIM Cubed-Sphere exp (aim.5l_cs):
2408      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2409    o update AIM Equatorial Channel exp:
2410      use standard aim_v23 pkg and change the SST fields to be more realistic.
2411    o globalFile now works with exch2
2412    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2413      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2414    o limit timeave output for hi-res integrations
2415    
2416    checkpoint52i_post
2417    o removed CPP_EEOPTIONS.h from verification/*/code
2418    o updated the tiling for global_ocean_pressure
2419    checkpoint52i_pre
2420    
2421    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2422      the old pkg/aim).
2423    
2424    checkpoint52h_pre
2425    o shortened offending lines in exch2_send_rx?.template
2426    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2427    o genmake2: add build & execute test for NetCDF code
2428    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2429      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2430    o added useSingleCPUIO flag to monitor.F and mon_out.F
2431    o added temporary hack for sea-ice dynamics on the cube:
2432      metric terms are ignored and it is assumed that
2433      there is no sea-ice on cube faces 1, 2, 4, and 5.
2434    
2435    checkpoint52f_post
2436    o added exch2 cube routines to pkg/exch2
2437    o modified hs94.cs-32x32x5 to use it
2438    o added new grid files to hs94.cs-32x32x5
2439    checkpoint52f_pre
2440    
2441    checkpoint52e_post
2442    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2443      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2444    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2445      to work with implicit vertical advection and AB ;
2446    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2447    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2448     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2449    checkpoint52e_pre
2450    
2451    o fix bug in impldiff when Nr=1 or Nr=2.
2452    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2453    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2454    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2455      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2456    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2457    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2458    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2459    
2460    checkpoint52d_post
2461    o re-tiled many expts to allow comparison in multi-processor mode
2462      - updated output accordingly
2463      - changed hs94.128x64x5 to use intial T from file rather than use the
2464        random number generator
2465    o add infrastructure in model routines for fizhi and gridalt packages
2466    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2467    o changes to permit hi-res, cubed-sphere, configuration
2468      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2469      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2470      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2471        of surface winds for the cube
2472      (A verification experiment, based on global_ocean.cs32x15, but with
2473       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2474       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2475       complete with example surface forcing files and matlab scripts to look
2476       at the output and compare it with that of global_ocean.cs32x15.)
2477    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2478       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2479       to conform to the common rule.
2480    o check-in the first version of the coupler + interfaces for multi-components
2481       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2482       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2483       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2484       - ocean and atmos. share the same horizontal grid (no interpolation).
2485       - exchanges between component and coupler is done in forward_step
2486    o new verification experiment, cpl_aim+ocn:
2487       coupled ocean - AIM atmosphere on cs32 grid.
2488    
2489    checkpoint52d_pre
2490    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2491    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2492    
2493    checkpoint52c_post
2494    o Fixing OPTIONS files for use of exf:
2495      - ALLOW_ECCO not needed
2496      - ECCO_CPPOPTIONS.h should not be included from
2497        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2498        as has been the case in the past
2499      - All cal/exf related options are currently set in
2500        single header file. Should remain so until we
2501        agree on a consistent new policy.
2502    o Removed all CPP options for cal package.
2503      cal has no more CPP options.
2504    o modified STOREs in GAD_ADVECTION
2505    o corrected key comp. for passkey
2506    
2507    checkpoint52b_post
2508    o new version: "thsice" of thermodynamic sea-ice pkg:
2509     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2510     - modify fluxes but do not change theta directly;
2511     - light cleaning of bulk_force pkg (still needed with thsice).
2512     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2513       + output_thsice.txt to test thsice & bulk_force pkgs.
2514    o put back grid & coriolis monitor output.
2515    checkpoint52b_pre
2516    
2517    o call "do_the_model_io" at the beginning (=> dump initial state)
2518    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2519    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2520      (need info on NUMBER_OF_PTRACERS)
2521    o missing PTRACERS headers in some routines
2522    o default tamc.h in pkg/autodiff supposed to crash
2523      to ensure proper customization
2524    
2525    checkpoint52a_post
2526    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2527      - moved surfaceTendencyTice from pkg/seaice to main code
2528      - subroutine FREEZE_SURFACE now limits only surface temperature
2529        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2530        => new output.txt for global_ocean.cs32x15 & global_with_exf
2531      - keep the old version of FREEZE for backward compatibility;
2532        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2533      - corresponding modifs for TAF directives
2534    o added surface flux output variables to TIMEAVE_STATVARS
2535    o time-averaged output for pkg/ptracers
2536    o fix problem with ECCO-related divided adjoint
2537      snapshot file was missing some ad-variables,
2538      but no warning issued by TAF
2539    
2540    checkpoint52a_pre
2541    o some bug fixes for #undef REAL4_IS_SLOW
2542    
2543    checkpoint52 = ecco_c52_e35
2544    o after testing adjoints of checkpoint51u_post
2545    
2546    checkpoint51u_post
2547    o this is the post-merge tag of the ecco-branch
2548      (needs another clean checkout and re-testing)
2549    o various natl_box_adjoint configs and results
2550      but no input fields
2551    o obcs adjoint not yet merged!
2552    o adding ECCO global 1x1 and 2x2 degree configs
2553    o updated/extended some store directives for seaice
2554    o pkg/ecco now containes ecco-specific part of cost function
2555    o top level routines the_main_loop, forward_step
2556      supersede those in model/src/
2557      previous input data.cost now in data.ecco
2558      (new namelist ecco_cost_nml)
2559    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2560    
2561    checkpoint51t_post
2562    o this is the pre-merge tag of the ecco-branch
2563    
2564    checkpoint51s_post
2565    o cleanup: removed various obsolete #define-s
2566    o pkg/grdchk
2567      - renamed 'ph-grd 3' to 'grad-res'
2568      - merged from ecco-branch
2569        (remaining bug fixes for obcs gradient checks)
2570      - additional high-precision output for testreport
2571        (grep for 'precision_grdchk_result')
2572    
2573    checkpoint51r_post
2574    o cleaned up or removed CPP_OPTIONS.h files
2575    o updated results for some of the tests to reflect the new
2576      optfiles (-ieee: -O0 instead of -O3)
2577    
2578    checkpoint51q_post
2579    o cd_code:
2580      - moved cd_scheme.F -> cd_code_scheme.F
2581      - separate read_checkpoint from cd_code_ini_vars.F
2582      - separated cd_code part from write_checkpoint
2583      - updated AD_SOURCE, generated .flow
2584      - added CD_CODE_VARS.h to the_main_loop
2585      - Moving cd_code specific store dir.s to pkg/cd_code
2586    o ctrl package totally restructured
2587      - pack/unpack now optional and decoupled from
2588        xx_/adxx_ I/O
2589      - ctrl_pack/unpack cleaned
2590        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2591      - confined inclusion of AD_CONFIG.h to where necessary.
2592    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2593    
2594    checkpoint51p_post
2595    o create initial cd_code package
2596      - WARNING: the initialization of fields within packages
2597        is broken because INI_FIELDS (where READ_CHECKPOINT is
2598        called) is called *before* PACKAGES_INIT_VARIABLES.
2599        This seems to be backwards since
2600        1) its important to initially zero the entire field including
2601           the "halo" region
2602        2) zeroing needs to be done *before* reading pickup info
2603           and the pickup call might or might not happen in any
2604           particular run
2605      - this needs an overhaul for R2
2606    o cleanup verification/*/code/GMREDI_OPTIONS.h
2607    o cleanup testreport
2608    
2609    checkpoint51o_post
2610    o bringing AD-related verif's up to date with genmake2
2611      - carbon/
2612      - global_ocean.90x40x15/
2613      - hs.94.1x64x5/
2614      - (front_relax/ )
2615    o (more) consistent directory structure for AD-related verif.'s
2616    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2617    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2618    o bug fix in find_alpha.F for MDJWF:
2619      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2620        change rho -> rho-rhoConst
2621      - replace call find_rho to find_rhonum
2622    o initialisation of rFlx extended to full array (required by TAF)
2623      and shifted to thermodynamics
2624    o removed PTRACERS.h in ptracers routine
2625    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2626    o Correcting initialisations for fVerU, fVerV.
2627    o helping TAF to recognize dependency on kUp for
2628      fVerU, fVerV
2629    o Replacing delZ by delR in pkg/ctrl/
2630    checkpoint51o_pre
2631    
2632    o undid all of cp51 pending some cleanups and discussion
2633    o added the [#include "AD_CONFIG.h"] statement to all files that need
2634       it for adjoint/tl #defines
2635     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2636     o removed tools/genmake since it no longer works
2637    
2638    checkpoint51n_post
2639    o modifications to make FREEZE flux visible to pkg/kpp
2640      - moved surfaceTendencyTice from pkg/seaice to main code
2641      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2642      - subroutine FREEZE now limits only surface temperature
2643        (this means new output.txt for global_ocean.90x40x15,
2644         global_ocean.cs32x15, and global_with_exf)
2645    o added surface flux output variables to TIMEAVE_STATVARS
2646    
2647    checkpoint51n_pre
2648    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2649    o added [#include "AD_CONFIG.h"] to all files that use the following
2650      defines:
2651      - ALLOW_ADJOINT_RUN
2652      - ALLOW_TANGENTLINEAR_RUN
2653      - ALLOW_ECCO_OPTIMIZATION
2654    
2655    checkpoint51m_post
2656    o incorporating changes to get TAMC/TAF working in genmake2
2657      - added new TAMC/TAF targets to the Makefile
2658      - various cleanups related to package handling
2659      - these changes should have no impact on the forward model
2660    
2661    checkpoint51l_post
2662    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2663     - faster algorithm for cal_addtime.F
2664     - higher precision arithmetic, where needed
2665     - pkg/exf *startdate variables changed from calendar date to
2666       model integration time
2667    
2668    checkpoint51l_pre
2669    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2670    o enable to apply restoring on S & T only in a latitude band.
2671    o update output (external_forcing_surf modif. change truncation errors)
2672       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2673    
2674    checkpoint51k_post
2675    o change default to: useNHMTerms=.FALSE.
2676     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2677       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2678     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2679        exp1, ideal_2D_oce
2680     - change data file of oceanic exp (leave the results unchanged for now)
2681       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2682    o set gravitySign automatically according to the vertical coordinate used
2683      (and change sign: back to "logical" value: +1 when R increases downward)
2684    o added an include barrier to the default CPP_OPTIONS.h and
2685      removed the #include "PACKAGES_CONFIG.h" from it
2686    o fix a bug in mom_fluxform (from chk51j_post)
2687    
2688    checkpoint51j_post
2689    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2690    o adjusted some flow directives (dynamics, thermodynamics)
2691    o added cubed-sphere case to test cost function
2692    o heckpoint_lev?_directives.h now include
2693      pkg-specific directives, whenever those are enabled.
2694    o Moving pkg-specific flow directives to corresponding pkg
2695      Moving pkg-specific differentiation list to corresponding pkg
2696      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2697      ---> conventions are
2698           - pkg_ad.flow
2699           - pkg_ad_diff.list
2700           - pkg_ad_check_lev?_dir.h
2701    
2702    checkpoint51i_post
2703    o merge of the branch-genmake2
2704      - knowingly breaks the older genmake
2705      - automatic generation of all ALLOW_${PKG_NAME} defines
2706      - new testreport supersedes older testscript
2707    o large number of package inclusion and header cleanups
2708    checkpoint51i_pre
2709    
2710    o new output for adjoin of global ocean vector invariant
2711    o fix for checkpoint of thermodynamic seaice and bulk_force
2712    o Steph gchem various cleanups
2713    
2714    checkpoint 51h_pre
2715    o fixed some single quotes
2716    o modify gchem pkg to be more versatile
2717    o modifications to clean up dic pkg
2718    o add pkg/cfc
2719    
2720    checkpoint51g_post
2721    o provide links for ARPACK and ADM*TLM
2722    o start removing verification/vero/
2723    o update AD-related stuff
2724      (in particular some IF-statements in model/src/ routines)
2725    o adding to verification/global_ocean.90x40x15/ adjoint of
2726      vector invariant setup
2727    
2728    checkpoint51f_post
2729    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2730    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2731      of tracer Green's fucntions for ocean inversion project.
2732    
2733    checkpoint51f_pre
2734    o Added on-the-fly spatial interpolation capability
2735        "USE_EXF_INTERPOLATION" to pkg/exf.
2736      - This is a temporary Cartesian-grid hack until
2737        the super-duper ESMF coupler becomes available.
2738      - See verification/global_with_exf/README for usage example.
2739      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2740        flags and modified pkg/seaice accordingly.
2741    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2742        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2743        non-local transport term.
2744    
2745    checkpoint51e_post
2746    o pkg/mom_vecinv:
2747      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2748      - add time-ave diagnostic of vorticity advection.
2749    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2750    o atmospheric geopotential: - include water vapor effect;
2751                                - use p^kappa in p* scaling.
2752    o land pkg: read initial state from files.
2753    o AIM : add stratospheric drag in the upper level
2754    
2755    checkpoint51d_post
2756    o change function ILNBLNK (=> last non-blank char.) to return zero
2757      (instead of the string length) when the string. char is empty
2758    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2759    o modif's to restore TAMC compatibility
2760      - avoid "_d" constructs in PARAMETER declarations
2761      - avoid interrupting lines by comment lines
2762    o Use cluster local disks for purely local I/O
2763      vs. globally visible disks needed for ctrl stuff
2764      (merged from ecco-branch)
2765      - new active_file_loc... and mdsio_..._loc routines
2766      - affected packages: autodiff, ctrl, grdchk, mdsio
2767    
2768    checkpoint51c_post
2769    o introducing integer flag debugLevel
2770      - debLevZero: suppress all output
2771      - debLevA: standard
2772      - debLevB: equivalent to current debugMode=.TRUE.
2773    o introducing pathname variable mdsioLocalDir for mdsio
2774      that can be specified at runtime
2775      (relevant for cluster I/O to local disk)
2776    `
2777    >>>checkpoint51b_post
2778    adjoint of ptracers
2779    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2780    o extended state in checkpoint_lev?, etc.
2781    o alternative ctrl/cost with tr1 or ptracer
2782    o new comlev1_bibj_ptracers
2783    o new ptracers.flow
2784    o made ptracers_forcing same as external_forcing_s
2785    o added verification for adjoint with ptracers
2786      - adm. grdchk fail so far
2787      - tlm. grdchk OK
2788      - checked tapelev/comlev recomputations: OK
2789    <<<checkpoint51b_pre
2790    
2791    checkpoint51a_post
2792    o added code for biogeochemistry package
2793      - new pkgs: dic, gchem
2794      - new subroutine in ptracers
2795    o modify code for biogeo packages
2796      - in model/src and pkg/ptracers
2797    
2798    checkpoint51
2799    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2800      - autodiff, ctrl, exf, grdchk, seaice
2801      kept separate packages
2802      - cost, ecco, obcs
2803    o updating verification/internal_wave, verification/lab_sea
2804      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2805    
2806    checkpoint50i_post
2807    o Preparing next differentiable checkpoint and sync
2808      of MAIN vs. ecco-branch
2809      - 1st step: this one is differentiable
2810      - 2nd step: next(! not this) checkpoint will have updated packages
2811                  from ecco-branch)
2812    
2813    checkpoint50h_post
2814    o new package "land": provide surface BC for AIM.
2815    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2816    o AIM: use true log-P extrapolation for near surface temp (= as in
2817        F.Molteni paper) ; update aim.5l_cs output.
2818    o New variable in PARM03 for more flexible pickups
2819    o somewhat cleaned package initialisation sequence for
2820      ctrl/ cost/ ecco/ in packages_... routines
2821    
2822    checkpoint50g_post
2823    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2824      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2825      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2826        made the default because of faster convergence than ADI
2827    
2828    checkpoint50f_post
2829    o exf totally restructured
2830      - replaced all exf_set_ routines by one generic exf_set_gen.F
2831        and made sure it's still differentiable
2832      - split exf_getffields.F into new exf_bulkformulae.F
2833      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2834      - updated adjoint/makefile and relevant verif. accordingly
2835    
2836    checkpoint50f_pre
2837     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2838          + change Evap over land. (update aim.5l_cs output)
2839     o added missing .cvsignores and made uniform across expts
2840     o changed configuration of tidal_basin_2d expt
2841     o added pkg/debug functions for tracing code in fatal crashes
2842     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2843     o new fn in pkg/monitor to stop model if solution grows too big
2844     o removed lots of single quotes from comments
2845    
2846    checkpoint50e_post
2847    o make KPP work with PTRACERS
2848     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2849       nearly a copy of kpp_transport_s
2850     - there is no analogue to SurfaceTendencyS, so I have to use
2851       gPtr(of the surface layer) instead
2852    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2853    checkpoint50e_pre
2854    
2855    checkpoint50d_post
2856    o change kpp output from multiple-record state files to single-record state
2857      files analogous to write_state.F
2858    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2859      analogous to the cg2d-related output.
2860    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2861      so that writing to internal file fn (with length 512) fails.
2862    checkpoint50d_pre
2863    
2864    checkpoint50c_post
2865    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2866    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2867    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2868    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2869    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2870    
2871    checkpoint50c_pre
2872    Merging from release1_p13:
2873    o bug fix for pkg/seaice dynamic solver
2874    o Added SEAICE_initialHEFF to pkg/seaice
2875    
2876    checkpoint50b_post
2877    o store u*,v* in gU,V instead of in guNm1,gvNm1
2878    o in order to put the momForcing out of the Adams-Bashforth:
2879      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2880      to timestep.F
2881    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2882    o re-generate output for highly sensitive test-exp:
2883       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2884    
2885    checkpoint50b_pre
2886    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2887    o corrected CPP option mismatch in exf_Bulk... functions for case
2888      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2889    
2890    checkpoint50a_post
2891    o Bug fix for merging between c50 and KPP.
2892      ikey was passed from thermodynamics to kpp_calc via
2893      common block rather than being recomputed in kpp_calc,
2894      in contradiction with new key itdkey.
2895      New key ikppkey created, and tamc.h headers updated.
2896    
2897    checkpoint50
2898    - 2nd step of merge with ecco-branch:
2899      merge changes in ecco-branch back into main trunk
2900    - bug fix in find_alpha
2901    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2902    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2903    - merged some sliced AD support routines
2904    
2905    checkpoint49
2906    merged from ecco-branch:
2907    o exf:
2908      - Enable initialisation of forcing fields to constant
2909        (runtime) values.
2910      - in exf_getffields.F
2911        Reduce i-/j-loop to interior domain, discarding overlaps.
2912        That also fixes wrong TAF-key computations for key_1, key_2
2913        with bulf formulae.
2914      - exf_init.F modify #ifdef for exf_init_evap
2915      - exf_getffieldrec.F, ctrl_getrec.F
2916        The following INT-usages are not safe:
2917          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2918          fldcount = int(fldsecs/fldperiod) + 1
2919        and were modified.
2920    o autodiff: checkpoint_lev...
2921      - updated storing for bulk formulae (some arrays were missing)
2922      - added state for seaice package
2923      - synchronized with main branch
2924    o DIVA:
2925      Modif.s in
2926      - the_main_loop.F
2927      - the_model_main.F
2928      and added cost_final_restore.F cost_final_store.F
2929      o With these changes, it is possible to fully separate
2930        the first forward run to compute the cost function (mdthe_main_loop)
2931        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2932        into separate model executions.
2933        This enables better tuning of DIVA to given queue sizes.
2934      o Loss of cost function value in consecutive DIVA runs is
2935        fixed by storing to 'costfinal' file.
2936      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2937        beginning/end of adjoint integration is accounted for.
2938      The current changes apply to TAF-1.4.26.
2939      TAF has one remaining bug, requiring one manual change
2940      (see MITgcm manual).
2941    o cal: synchronized between MAIN and ecco-branch
2942    
2943    checkpoint48i_post
2944    o Changes to restore differentiability of code w.r.t. previous tag
2945      (mostly adding new routines to make list and replacing
2946      pressure by totPhiHyd).
2947    o Updated and merged grdchk package
2948      - has both ADM and TLM checks
2949      - works for single- and multi-proc.
2950      - output cleaned
2951      - worked successfully for parallel DIVA
2952    o genmake:
2953      - Adding -platform=SP4
2954      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2955    o Modif. for DIVA:
2956      ctrl_unpack should not be called in intermediate DIVA interval.
2957      (similar thing would apply for active files such as
2958      tbar, sbar, psbar, which should not be reinitialised;
2959      only relevant for ecco-branch)
2960    
2961    checkpoint48h_post
2962    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2963    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2964    o Added SEAICE_initialHEFF to pkg/seaice
2965    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2966    
2967    checkpoint48g_post
2968    --- EOS:
2969    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2970      store total Potential in totPhyHyd for diagnostics & EOS.
2971    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2972    --- Pressure/geopotential gradient:
2973    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2974    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2975      ( changes results of global_ocean_pressure )
2976    o NLFS + z-coord.: add eta*Rho' contribution.
2977    o accurate phiHyd when using interface-W at the middle between 2 centers
2978     ( changes results of ideal_2D_oce )
2979    o includes r* 2nd term in potential gradient.
2980    
2981    checkpoint48f_post
2982    Merging from release1_p12:
2983    o Modifications for using pkg/exf with pkg/seaice
2984      - improved description of the various forcing configurations
2985      - added basic radiation bulk formulae to pkg/exf
2986      - units/sign fix for evap computation in exf_getffields.F
2987      - updated verification/global_with_exf/results/output.txt
2988    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2989      (SBO) core products, including oceanic mass, center-of-mass,
2990      angular, and bottom pressure (see pkg/sbo/README.sbo).
2991    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2992      to avoid negative values in shallow regions.
2993      - updated verification/natl_box/results/output.txt
2994      - updated verification/lab_sea/results/output.txt
2995    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2996    o Added useSingleCpuIO option (see PARAMS.h).
2997    o Updated useSingleCpuIO option in mdsio_writefield.F to
2998      work with multi-field files, e.g., for single-file pickup.
2999    o pkg/seaice:
3000      - bug fix in growth.F: QNET for no shortwave case
3001      - added HeffFile for specifying initial sea-ice thickness
3002      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3003    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3004      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3005    o pkg/seaice:
3006      - adjoint-friendly modifications
3007      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3008    
3009    checkpoint48e_post
3010    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3011    o dynamics: change definition of computational domain & adapt mom_fluxform
3012      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3013    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3014        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3015        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3016        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3017        inverted_barometer solid-body.cs-32x32x1
3018      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3019    
3020    checkpoint48d_post
3021    o in preparation for r*:
3022     a) use pre-computed gradient of hydrostatic potential:
3023        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3024     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3025        => affects results of glob_oce_pressure (different truncation error)  
3026      update output.txt of ideal_2D_oce & global_ocean_pressure
3027    
3028    checkpoint48d_pre
3029    o in preparation for r*:
3030      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3031      pass the 2 comp. of the grad. as arguments to momentum S/R.
3032      but for the moment, only used if it does not change the results.
3033    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3034    
3035    checkpoint48c_post
3036    Modifications in treatment of initial flux forcing controls
3037    to avoid extra storing of flux fields.
3038    
3039    checkpoint48c_pre
3040    o Added tidal_basin_2d experiment (currently 1D!)
3041    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3042    
3043    checkpoint48b_post
3044    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3045     (modification to pressure gradient not yet implemented)
3046    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3047      (for U & V) that are used for vertical advection of momentum.
3048    
3049    checkpoint48a_post
3050    o In preparation for r*, use temp. array to compute vertical transport
3051       in flux-form momentum pkg. => change results of few test-exp.
3052      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3053                        lab_sea, natl_box & plume_on_slope
3054    
3055    checkpoint48
3056    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3057    
3058    checkpoint47j_post
3059    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3060    o moved adexch from forward_step to addummy_in_stepping
3061    o added exch in ctrl_map_...
3062    o aveFreq.=0. at end of cost_final to avoid overwrite in
3063      reverse checkpointing loop
3064    o Yet more changes in gmredi:
3065      * adgmredi_calc_tensor
3066        avoiding all recomputation of gmredi_slope_limit
3067      * adgmredi_x/y/rtransport
3068        added flag for excessive storing to avoid recomp. of
3069        u/v/rtans, dTdx/y/z
3070        -> this is not really necessary and very memory-consuming
3071      * adgmredi_slope_psi:
3072        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3073      * gmredi_slope_limit
3074        re-activated full calculation of taperfct for case 'ac02'
3075    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3076    
3077    checkpoint47i_post
3078    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3079    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3080      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3081    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3082    o gmredi: fix few bugs.
3083    
3084    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3085    This will be a good checkpoint to plug into the ecco-branch.
3086    o few modif.'s to get latest version adjointed
3087      (mainly kick out code in ini_linear_phisurf)
3088    o modif's to run adjoint with exactConserv
3089    o case GM_BOLUS_ADVEC should be cleaned
3090      S/R gmredi_slope_psi should be cleaned
3091    o verification/carbon now has exactConserv=.TRUE.
3092    
3093    checkpoint47g_post
3094    o time-average AIM output: becomes independent from statvars time-average
3095      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3096    o After TAF bug fix:
3097      Tested adjoint of gmredi package.
3098      Tests were done with checkpoint47 rather than with latest
3099      checkpoint47f_post since the latter is broken for the adjoint
3100      verification/carbon/ contains both ADM and TLM gradient checks.
3101    Here they are, before they get changed/lost/stolen.
3102    Mostly modif.'s to fix numerical sensitivities.
3103    Gradient checks OK for
3104    - GM_taper_scheme:
3105      * clipping
3106      * ac02
3107      * linear
3108      * glw91
3109      * dm95
3110      * ldd97
3111    - GMREDI_OPTIONS:
3112      * GM_VISBECK_VARIABLE_K
3113      * GM_NON_UNITY_DIAGONAL
3114      * GM_EXTRA_DIAGONAL
3115      * GM_BOLUS_ADVEC
3116    in conjunction with data.gmredi parameters to be checked in
3117    in a few minutes under verification/carbon/code/
3118    
3119    checkpoint47f_post
3120    Merging from release1_p10:
3121    o modifications for using pkg/exf with pkg/seaice
3122      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3123        and SEAICE_EXTERNAL_FLUXES
3124      - pkg/exf CPP options EXF_READ_EVAP and
3125        EXF_NO_BULK_COMPUTATIONS
3126      - usage examples are Experiments 8 and 9 in
3127        verification/lab_sea/README
3128      - verification/lab_sea default experiment now uses
3129        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3130    
3131    checkpoint47e_post
3132    o created a tag prior to creating a branch
3133    
3134    checkpoint47d_post
3135    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3136      at the bottom boundary had an erroneous half slip boundary condition
3137    o added bottom drag and no slip boundary condition capabilities to
3138      oceanic pressure coordinates code
3139    o added new verification experiment global_ocean_pressure, this experiment is
3140      also described in the tutorial section of the manual
3141    checkpoint47d_pre
3142    
3143    checkpoint47c_post
3144    o Added a verification experiment for a global cubed-sphere ocean run
3145      -  verification/global_ocean.cubed32x32x30
3146      -  uses pkg/therm_seaice and pkg/bulk_forcing
3147    
3148    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3149    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3150      when using P-coordinate; only implemented for atmospheric config.
3151    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3152      NOTES: requires option NONLIN_FRSURF to be "#define".
3153    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3154    
3155    checkpoint47b_post
3156    Merging from release1_p9:
3157    o pkg/seaice
3158      - removed GOTO's and added taf directives
3159      - double precision constants to reduce the g77 (Linux)
3160        to F77 (SGI) differences reported in release1_p8
3161    o tools/genmake
3162      - added SGI options
3163    o verification/testscript
3164      - updated to that of checkpoint47a_post
3165    o verification/global_ocean.90x40x15/input/eedata
3166      - modified for SGI f77 compatibility
3167    o verification/lab_sea
3168      - added description of sea-ice model
3169      - added missing matlab routines
3170      - added test of thermodynamics parallelization
3171    
3172    checkpoint47a_post
3173    o new pkg: aim_v23
3174     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3175       for now, keep the same surface forcing as before.
3176     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3177     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3178     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3179    o add diagnostic of surface correction term in monitor output
3180    
3181    o bulk_force and therm_seaice
3182    - Two packages:  bulk_force (Bulk forcing)
3183      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3184    - Earlier integration from Stephaine Dutkiewicz
3185      and Patrick Heimbach.
3186    - Two ifdef statements for compile time,
3187       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3188    
3189    checkpoint47
3190    differentiable version of checkpoint46n_post
3191    o bug fix in quasihydrostaticterms
3192    o * "clean" adjoint code (in terms of extensive recomputations)
3193        can now be obtained for all GMREDI options (i.e. for
3194        - GM_VISBECK_VARIABLE_K
3195        - GM_NON_UNITY_DIAGONAL
3196        - GM_EXTRA_DIAGONAL
3197        - GM_BOLUS_ADVEC )
3198      * However, wrong gradient check problem remains unsolved.
3199      * New CPP options have been introduced for different
3200        tapering schemes
3201    o external_fields_load now part of differentiation list
3202    o pressure needs multiple storing;
3203      would be nice to have store_pressure at beginning or
3204      end of forward_step, e.g. by having phiHyd global (5-dim.)
3205      (NB: pressure is needed for certain cases in find_rho,
3206      which is also invoked through convective_adjustment).
3207    o recomputations in find_rho for cases
3208     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3209    o #define ATMOSPHERIC_LOADING should be differentiable
3210    o ini_forcing shifted to begining of initialise_varia
3211    o Incorporating QNVS line search routines into MITgcm
3212      (this is separate code, and therefore not under pkg)
3213      lsopt/, optim/
3214    o Updated verification/carbon/
3215      - #define GM_VISBECK_VARIABLE_K
3216      - GM_taper_scheme    = 'ldd97'    
3217    
3218    checkpoint46n_post
3219    Merging from release1_p8:
3220    o verification/natl_box:
3221      updating new external_fields_load routine
3222    o New package: pkg/seaice
3223      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3224      The sea-ice code is based on Hibler (1979-1980).
3225      Two sea-ice dynamic solvers, ADI and LSR, are included.
3226      In addition to computing prognostic sea-ice variables and diagnosing
3227      the forcing/external data fields that drive the ocean model,
3228      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3229      The implied surface heat flux is then stored in variable
3230      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3231      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3232      non-local transport term.  Because this call precedes model
3233      thermodynamics, temperature under sea-ice may not be "exactly" at
3234      the freezing point by the time theta is dumped or time-averaged.
3235      N.B.: fairly large differences in accuracy occur across
3236            different platforms/compilers; comparison between
3237            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3238            generated output gives:
3239       T           S           U           V
3240      C D M    c        m  s        m  s        m  s        m  s
3241      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3242      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3243      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3244    
3245      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3246    o GAD:
3247      - generated new common blocks to account for call of
3248        same gad routines with differing traceridentities
3249        (needed to modify tracerIdentity indices in GAD.h)
3250      - generated separate common blocks for case useCubedSphereExchange
3251        (Department of Futurology)
3252      - parameter lists to gmredi_?transport: added tracerIdentity
3253      - added new key indices to tamc.h
3254    o external_fields_load:
3255      - added this routine to TAF list
3256      - needed to make some common blocks global and additional storing
3257        along the same lines as exf package (checkpoint_lev?_directives.h)
3258    o exf:
3259      updated external forcing package
3260      - bug fixes carried over from ecco-branch
3261        (missing OBCS_OPTIONS.h in two routines)
3262      - enable easy to use "no forcing".
3263      - added exf I/O for atmospheric loading
3264      - added exf I/O for runoff data
3265      - transfered scaling between exf <-> MITgcm to exf namelist
3266    o Adding new verification experiment global_with_exf.
3267      This verification experiment is almost identical to the
3268      global_ocean.90x40x15 experiment, except that it uses
3269      the exf (and cal) package instead of the
3270      external_fields_load routine (cf README file).
3271    
3272    checkpoint46m_post
3273    o modified testscript to return -- when there are no lines of "%MON" output
3274    o added new flag "quasiHydrostatic" for QH mode
3275      and new routine quasihydrostaticterms()
3276    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3277      New routine: mom_u_coriolis_nh()
3278    o fixed sign of non-hydrostatic metric terms in u and v equations.
3279      Depend on correct sign of gravitySign.
3280    o added work.pc* to .cvsignore in aim directories using ifc
3281    o introduced flag for controllin non-hydrostatic metric terms
3282    o removed gravitySign from PARM04
3283    o switched to g77/ifc from pgf77 in aim experiments
3284    
3285    checkpoint46l_post
3286    o made convective adjustment work with pressure coordinates:
3287     - changed the direction of k-loop in convective_adjustment.F for the
3288       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3289     - adjusted the reference pressure k-index in convective_adjustment.F
3290     - adjusted the convection condition in convect.F (in analogy to
3291       calc_ivdc.F)
3292     - convective_adjustment no longer computes anything on the halos
3293     - removed the warnings about negative salinity from find_rho.F and
3294       find_alpha.F; instead the new routine look_for_neg_salinity, called
3295       at the beginning of find_rho, find_alpha, and find_beta, does a
3296       check of the entire slice, if CPP-option
3297       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3298    checkpoint46l_pre
3299    
3300    checkpoint46k_post
3301    o fixed the verification/global_ocean.90x40x15 experiment:
3302     - new bathymetry (the world according to A., JMC, and M.)
3303     - new initial fields and forcing fields (*.bin files)
3304     - new POLY3.COEFFS (for the next release one should switch to a full
3305       equation of state: JMD95P or MDJWF)
3306     - fixed several errors and redundancies in the data file
3307     - experiment uses looped cells
3308     - added matlab directory with diagnostic scripts for plotting of output
3309    
3310    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3311     - read AIM physics parameters from a file (data.aimphys)
3312     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3313    
3314    checkpoint46j_post
3315    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3316    o move wVel computation at the end of the time step, in S/R integr_continuity
3317    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3318    o update timeave pkg for wVel diagnostic.
3319    checkpoint46j_pre
3320    
3321    checkpoint46i_post
3322    o Clean up AIM package (and keep the results unchanged):
3323      include CPP_OPTION and use IMPLICT NONE in all routines ;
3324      declare all the variables _RL ; use _d 0 for all numerical constants.
3325      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3326    
3327    checkpoint46h_post
3328    o cleaned up the use of rhoNil and rhoConst.
3329      - rhoNil should only appear in the LINEAR equation of state, everywhere
3330        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3331        and the dynamical equations are all divided by rhoConst
3332    o introduced new parameter rhoConstFresh, a reference density of fresh
3333      water, to remove the fresh water flux's dependence on rhoNil. The default
3334      value is 999.8 kg/m^3
3335    o cleanup up external_forcing.F and external_forcing_surf.F
3336      - can now be used by both OCEANIC and OCEANICP
3337    checkpoint46h_pre
3338    
3339     Added code to convert surface volume flux (fresh water) into
3340     a mass flux when using P coordinates in the ocean (OCEANICP).
3341     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3342    
3343    checkpoint46g_post
3344    o Include a new diagnostic variable phiHydLow for the ocean model
3345      - in z-coordinates, it is the bottom pressure anomaly
3346      - in p-coordinates, it is the sea surface elevation
3347      - in both cases, these variable have global drift, reflecting the mass
3348        drift in z-coordinates and the volume drift in p-coordinates
3349      - included time averaging for phiHydLow, be aware of the drift!
3350    o depth-dependent computation of Bo_surf for pressure coordinates
3351      in the ocean (buoyancyRelation='OCEANICP')
3352      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3353        Theta, Salinity, and Pressure in the parameter list. This routine is
3354        presently contained in find_rho.F. This routine does not give the
3355        correct density for 'POLY3', which would be a z-dependent reference
3356        density.
3357    o cleaned up find_rho
3358      - removed obsolete 'eqn' from the parameter list.
3359    o added two new verification experiments: gop and goz
3360      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3361    checkpoint46g_pre
3362    
3363    checkpoint46f_post
3364    o Enable tangent linear (forward mode) gradient checks:
3365      - extended active file handling to g_... files
3366      - added TANGENT_SIMULATION to theSimulationMode
3367      - extended grdchk package accordingly
3368    o added tangent linear setup in verification/carbon/code_ftl
3369    o added adjoint setup in verification/front_relax/code_ad
3370    
3371    checkpoint46e_post
3372    o Added new equation of state -> MDJWF
3373      - EOS of McDougall et al., 2002, JAOT, submitted
3374      - caveat: the equation of state is only valid for a smaller (more
3375        realistic?) range of values than JMD95P/Z and UNESCO
3376      - added masks to the calculation of pressure in store_pressure
3377      - added more check values for density in check_eos (ini_eos.F), some of
3378        the old check values are out of the range of the MDJWF-eos, so don't
3379        expect perfect matches for those
3380    checkpoint46e_pre
3381    
3382    checkpoint46d_post
3383    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3384      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3385      case of pressure coordinates. eosType='JMD95Z' in
3386      combination with buoyancyRelation='OCEANICP' now causes an error.
3387    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3388      in find_alpha/beta.
3389    checkpoint46d_pre
3390    
3391    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3392      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3393    
3394    checkpoint46c_post
3395    o Changes necessary for ocean in p-coordinates
3396     -  Added new buoyancy relation = 'OCEANICP'
3397     -  Added new parameters = gravitySign (this used to be contained inside
3398        the factor dRdZ which I added when we first switched to R coordinates).
3399     X GM/Redi is not compatible (yet)
3400     X bottom drag and no-slip need to be debugged.
3401    checkpoint46c_pre
3402    
3403    checkpoint46b_post
3404    o Added new equation of state -> JMD95Z and JMD95P
3405      - EOS of Jackett and McDougall, 1995, JAOT
3406      - moved all EOS parameters into EOS.h
3407      - new routines ini_eos.F, store_pressure.F
3408    o Added UNESCO EOS, but not recommended because it requires
3409      in-situ temperature (see JMD95)
3410    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3411      unesco.f to be used with POLY3
3412    checkpoint46b_pre
3413    
3414    checkpoint46a_post
3415    o Added (atmospheric) pressure loading
3416      - new field in FFIELDS.h, etc...
3417      - new cpp flag ATMOSPHERIC_LOADING
3418    o Changed hFacC to _hFacC in calc_phi_hyd.F
3419    o Added SHORTWAVE_HEATING to some files for consistency
3420    checkpoint46a_pre
3421    
3422    checkpoint46
3423    further merges from release1_p5
3424    o new ctrl package
3425      - adopted from ECCO environment to enable optimization
3426      - added Eliassen Palm fluxes to controls
3427    o added Eliassen Palm flux controls to gradient check package
3428    o cost package
3429      - Compatible with new ctrl package
3430      - added Eliassen Palm cost hooks
3431      - modif's of existing cost functions
3432    o Adjoint-related bug fixes in kpp:
3433      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3434      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3435    o autodiff package
3436      - flow directives:
3437        + new for S/R do_the_model_io
3438        + enhanced for S/R checkpoint
3439        + new gmredi.flow
3440      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3441        disable adcommon.h/g_common.h by default.
3442      - fixed problem for adjoint of global_max
3443    o modified verification/carbon/
3444    o New setup for adjoint of global_ocean
3445    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3446    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3447    o incorporated hooks for sponge layer code (external_forcing.F)
3448    
3449    checkpoint45d_post
3450    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3451  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3452    (affects plume_on_slope "cg2d" output)    (affects plume_on_slope "cg2d" output)
3453    o add new parameter deltaTfreesurf for free-surface time stepping
3454    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3455  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3456  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
3457  o add new flags:  o add new flags:

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