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revision 1.241 by dimitri, Thu Jan 15 03:38:22 2004 UTC revision 1.997 by jmc, Thu May 29 21:33:14 2008 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint59r
8    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
9      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
10      fix option to read coriolis(@ cell-corner) from files with CS-grid.
11    o pkg/mnc: add some attributes to standard 1D-coordinate variables
12    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
13      mass points, when using mnc for output
14      - add runtime parameter (missing_value, missing_value_int) to override
15        default (which is the value of getcon('UNDEF'))
16    o pkg/mnc: prepare mnc for the actual use of missing values with the
17      diagnostics package: small fix in mnc_cw_readwrite.template and more
18      initialisation of never used fields
19      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
20      versions
21    o pkg/thsice/thsice_ini_vars.F added default initial values so that
22      thermodynamics sea ice solver does not blow up when some initial fields
23      are missing.
24    o move from external_forcing_surf.F to ini_forcing.F
25      the p-coord. hack consisting in using pLoad to set phi0surf ;
26      update output of tutorial_global_oce_in_p (affected @ truncation level).
27    o Freshen up a bit hs94.1x64x5, notably:
28      remove rotationPeriod and tRef=5*0. (adjoint only), and add
29      exactConserv=.TRUE.
30    o pkg/generic_advdiff:
31      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
32      applies to files where Temperature & Salinity 2nd Order moments are used.
33    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
34      this uses a dynamically allocated internal state data structure
35      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
36      and requires a fortran 90 compiler
37    
38    checkpoint59q
39    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
40       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
41    o Refresh tutorial_global_oce_biogeo, notably:
42      - change bathymetry (put back seamounts in ACC, use hFacs)
43      - change EOS (POLY3 --> JMD95Z)
44      - use Bryan-Lewis vertical diffusivity
45      - use multidimensional advection
46      - remove old virtual virtual in dic pkg, now done through ptracer pkg
47      - change a couple of parameters in dic pkg
48    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
49    o pkg/obcs: change default to OBCSfixTopo = .true.,
50      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
51      - replace "debugMode" with "debugLevel .GE. debLevB"
52    o implementation of TAF directives for gchem,cfc,dic
53    o remove "exp5" (replaced by tutorial_deep_convection).
54    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
55      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
56      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
57      --> changes results in exp4, seaice_obcs
58    o tutorial_deep_convection :
59      update the set-up and increase resolution and domain size ; start
60      from pseudo initial conditions = output at t=120mn in order to see
61      something happening when running testreport.
62    o pkg/seaice: add os7mp as an advection scheme
63                  add check for advection schemes
64                  add a flag for restoring T and S underneath sea ice
65    o pkg/my82: add netcdf-support and diagnostics
66    o thsice pkg:
67      - Now hsMax limits snow height by turning it into ice following
68        flooding scheme (and now conserving energy)
69      - Slight rewriting of the formula in thsice_calc_thick.F
70      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
71      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
72    
73    checkpoint59p
74    o gchem / dic / cfc :
75      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
76      - add new parameter files: "data.dic" & "data.cfc" ;
77      - various re-arrangement in initialisation & header file ;
78      - fix tutorial_global_oce_biogeo for multi-threaded test.
79    o pkg/dic: test for "pickup_dic" file when restarting ;
80      if no pickup-file, can restart with a re-initialised pH (same as it did
81      before) providing pickupStrictlyMatch is set to False.
82    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
83      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
84    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
85      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
86    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
87     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
88       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
89    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
90       scheme to use for vorticty-term ;
91     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
92       (with default selectVortScheme, return to original discretisation)
93     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
94    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
95    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
96      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
97      also fix diagnostics VISCAHW & VISCA4W.
98    
99    checkpoint59o
100    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
101    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
102      move a few statemens out the main loop into separate loops
103    o pkg/shelfice:
104      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
105        (kg/m^2/s), does not break tests, because in verification/isomip,
106        rhoConstFresh=rhoConst (by accident)
107      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
108      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
109        new file model/src/seawater.F, so that they are available for all pkgs.
110      - convert potential temperature into in-situ temperature. This changes the
111        isomip tests => update tests
112    o add a flag writePickupAtEnd (default=true) to be able to suppress
113      writing a pickup at the last timestep
114    o tools/mpack-1.6 :
115      - disable automake (not working) and autoconf (not needed).
116      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
117        also cleaner with much less compilation warnings.
118    o pkg/profiles:
119      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
120      (for "less than 32 characters name" compiler requirement)
121    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
122      conditions that have a different sampling frequency than S/T/U/V obcs
123    o pkg/diagnostics (stats-diags):
124      - fix global Min/Max in case 1 processor get only empty tiles
125    o genmake2: replace (4 times)
126         make genmake_tc_1.o >> genmake_warnings 2>&1
127      with
128         COMM="$CC $CFLAGS -c genmake_tc_1.c"
129         echo $COMM >> genmake_warnings
130         $COMM >> genmake_warnings 2>&1
131      to make genmake2 always see the value of CC as specified in the optfile.
132    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
133      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
134      - modify verification advect_cs test to test SOM-advection on CS-grid.
135    o pkg/ctrl:
136      - Rewrite of ctrl_map_ini_ecco.F,
137        introducing a generic routine (ctrl_map_ini_gen.F).
138      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
139    
140    checkpoint59n
141    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
142      number in dedicate array "hdiag":
143      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
144        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
145      - many small changes (integer format) for large number of diagnostics
146      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
147        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
148    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
149      usingSphericalGrid, this allows to define the rotated grid coordinates
150      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
151      geographical coordinates according to the inverse of the rotation defined
152      by the Euler angles, so that Coriolis parameter and online-interpolation by
153      exf works with the geographical coordinates on XC/YC/XG/YG.
154      Naturally, this feature does not work with all packages, so some
155      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
156      profiles), because there the coordinates are assumed to be regular
157      spherical grid coordinates.
158    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
159      - introduce isopycnal diffusion coefficient control.
160    o tools/adjoint_options:
161      - additional control vector components.
162    o pkg/mnc: have mnc create marginally meaning full coordinate variables
163      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
164    o pkg/mypackage:
165      - add example of read/write pickup for state-var ;
166      - add entry points to the main code for state-vars diags & write-pickup.
167    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
168      transitions for useExfYearlyFields
169      - add new subroutine that determines the file to read from for
170        use*YearlyFields = .TRUE. and .FALSE.
171      - add a verification experiment to global_with_exf that tests
172        useExfYearlyFields with USE_EXF_INTERPOLATION defined
173    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
174      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
175      subroutines (which could be generated from a template, because they are
176      almost identical), for now they are included in obcs_prescribe_read.F for
177      simplicity
178    o pkg/exf:
179      - add a little more diagnostic to exf_interp_read (in analogy to
180        mds_read_field, can be turned off with debugLevel < debugLevA=1)
181      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
182        ugly but fast by unrolling short inner loops, inserting a unroll=8
183        directive in routine lagran, and splitting a loop and making do while the
184        outermost loop (the latter requires the intoduction of index arrays)
185    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
186    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
187      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
188    o verification/seaice_obcs: updated for restart test and latest options
189    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
190      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
191      for now this is only available for the C-grid code and also within
192      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
193    
194    checkpoint59m
195    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
196      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
197    o gad_som : fix flux output (& diagnostics) to have same units as other  
198      advection scheme fluxes (was previously multiplied by deltaT).  
199    o added verification/seaice_obcs both to test seaice open boundaries
200      and to provide an example matlab scrpt for generating them
201    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
202    o pkg/salt_plume: clean up salt_plume_frac.F to
203      remove redundancy in PlumeMethod 1 and 4
204    o pkg/kpp: added saltplume diagnostics
205    o pkg/obcs and pkg/seaice:
206      - do not set uice and vice to zero when OB*icefile are unspecified
207      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
208      - moved seaice tracer obcs after call to seaice_growth
209    o pkg/salt_plume: added various options for salt plume depth
210      criterion and for vertical distribution of the salt
211    
212    checkpoint59l
213    o pkg/ptracers: new version of ptracers pickup:
214      read meta file and write only fields which are needed to restart.
215      ( same logic as main pickup file ; also using pickupStrictlyMatch )
216    o pkg/seaice:
217      - add timescale for melting due to warm mixed layer as a means of
218        setting SEAICE_availHeatFrac more conveniently
219      - add a CPP-flag/runtime parameter check for flooding algorithm
220      - reformulated availHeat in seaice_growth.F to be independent of AREA
221    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
222      unit changes
223    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
224    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
225      SX vector computer.
226    o pkg/seaice:
227      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
228        seaice forcing fields can now be read only through pkg/exf
229      - removed some unused halos
230    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
231    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
232      or U/VICE from U/VWIND before computing U/VSTRESS
233    
234    checkpoint59k
235    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
236      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
237    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
238      all experiments pass when compile with un-initialised var. checking option.
239    o added pkg/salt_plume
240    o script to test restart (for now, in MITgcm_contrib/jmc_script)
241    o pkg/seaice: new read/write pickup version.
242      read meta file and write only fields which are needed to restart.
243      ( same logic as main pickup file ; also using pickupStrictlyMatch )
244    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
245    o lab_sea.hb87: modify the domain & update output.hb87.txt :
246      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
247      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
248      process. Fixed here by closing the domain at the Northern boundary.
249    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
250    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
251      a set of consecutive levels in/from a 3-D array.
252    o pkg/ptracers:
253      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
254      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
255    
256    checkpoint59j
257    o in pkgs: dic, obcs, offline, rbcs:
258      standard way to compute coeff. for time interpolation between 2 time reccords
259      which retains full precision (& make results less dependent on compiler).
260      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
261    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
262      packages instead of reading ice cover and wind speed separately
263    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
264     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
265      to allow to compile customized code before the update)
266    o cleaning-up:
267      - fix CPP instruction syntax in pkg/obcs
268      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
269        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
270      - fix some threads issue in IO parts.
271    o pkg/dic:
272      - add tons of "_d 0" (--> much better testreports !)
273       and then update outputs of tutorial_global_oce_biogeo
274    o pkg/mom_fluxform:
275      add a special version of momentum advection intended to conserve momentum
276      next to a bathymetry step or a coastline edge. (default = off = #undef)
277    o new read/write pickup version:
278      - for now, only implemented for main (mdsio) pickup file.
279      - write out only what is needed to restart; merge pickup_nh , pickup_ph
280        and main pickup together.
281      - read meta file; read only what is needed to restart; stop if a field
282        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
283        if it make sense (even if the restart is not perfect).
284      - if no meta file, assume that pickup to read corresponds exactly to
285        a pickup that would currently be written.
286      - read pickup written in the old format (until checkpoint59i) if it
287        recognizes an old meta file (no field-list).
288      - add a meta file in exp. which starts from a pickup: 2 cases:
289        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
290         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
291        b) a meta file describing the content of the associated pickup file
292         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
293    o pkg/mdsio & pkg/rw:
294      - new routine to read a meta file ; new set of routine to read
295        Multiple-fields file (with meta file).
296    o added open boundary conditions capability for seaice
297        HSNOW, HSALT, UICE, and VICE
298    
299    checkpoint59i
300    o adjoint:
301      * fix multiDimAdvection adjoint
302        (partial recomputation problem by TAF for fVerT(:,:,kDown)
303        and comlev1 size definition (maxpass vs. max. number of tracers)
304      * verification/global_ocean.90x45x15 adjoint now tests
305        NLFS and multiDimAdvection using DST3 (=30)
306      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
307    o pkg/kpp: add "_d 0" to real constant (if missing);
308      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
309      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
310    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
311      for internal parameters related to restart process (formerly from PARAMS.h)
312      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
313    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
314      as argument. (only atm2d & obcs write_pickup have not yet been updated)
315    o pkg/monitor:
316      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
317      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
318      - account for deep Atmosphere factor and density factor (anelastic)
319    o added open boundary conditions capability for seaice HEFF and AREA
320    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
321      thermodynamics
322      - requires a little reorganization, which affects the testreport results
323        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
324        so that now the conservative form is tested
325      - add a few comments
326    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
327    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
328    o add new diagnostics to seaice: advective, diffusive fluxes (only for
329      multidim-advection, for scheme 2 they are not filled) and transports,
330      thermodynamic growth rates
331    o change units of EmPmR (inside the code, + within coupling interface)
332      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
333      Affects results @ truncation level (cg2d match) and update output of
334       experiments: lab_sea(6), global_ocean.90x40x15(10),
335      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
336      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
337      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
338      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
339    
340    checkpoint59h
341    o pkg/exf:
342      - improve vectorization by moving if-statement out of loops in
343        exf_mapfields, exf_radiation
344      - exf_bulkformulae.F: introduce 2D fields and vectorize code
345    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
346    o testreport:
347      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
348        monitor & update offline_exf_seaice exp. output.
349      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
350    o pkg/seaice:
351      - bug fix in the evp solver: boundary conditions were affected be
352        masking of zMax/zMin (changes results)
353      - minor bug fix in boundary conditions in seaice_calc_strainrates
354        (changes results for no_slip)
355      - seaice_lsr.F: make interpolation of eta dependent on boundaries
356      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
357      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
358        stress formulation and no-slip boundary conditions
359    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
360      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
361    o pkg/seaice: a first HSALT time stepping equation has been checked in
362    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
363      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
364      without requiring DO-IF statements
365    o pkg/thsice:
366      use continuous power-law function for partition of energy between lateral
367      melting/freezing and thinning/thickening ; old code using step function
368      still available with #undef THSICE_FRACEN_POWERLAW
369      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
370    o testreport: change AD testing : check against results/output_adm.txt
371      using same scripts as for forward test.
372    
373    checkpoint59g
374    o adjoint testing: in preparation for changing testreport:
375      - output format: cost and grad written on separated lines
376      - ad output results in directory "results" (instead of "results_ad")
377    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
378    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
379    o pkg/ecco: allow user defined cost function contributions
380    o testreport:
381      Allow to choose (per experiment) the list of tested output variables
382       and the main variable (used to issue a pass/FAIL ) ;
383      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
384      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
385      Also modify printing of summary:
386       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
387       b) echo the list of tested variables in the individual summary.txt of
388          each experiment.
389    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
390      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
391      (but still depend on the tile decompostion of the domain).
392    o pkg/seaice: change a discretization detail to make the B-grid code
393      "more symmetric". This change is likely to remove all "ridges/leads" that
394      where quasi-aligned with the grid in B-grid solutions. It may also be
395      the solution to the stress coupling issues with the B-grid.
396    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
397      remove .cvsignore from input dir. (since testreport no longer run here).
398    o pkg/thsice:
399     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
400     - fix reshaping of sea-ice just after advection:
401       melt all the ice only if ice-volume is too small.
402     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
403       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
404     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
405    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
406      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
407    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
408      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
409      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
410      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
411      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
412      -> update output.txt
413    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
414     this affects truncation error: -> update output.txt of exp:
415      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
416      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
417    
418    checkpoint59f
419    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
420    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
421      a bounded range (in forward mode)
422    o pkg/ecco, ctrl, autodiff and mom_common:
423     internal parameter controls, completements of implementations
424    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
425    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
426      (not seem any difference in testing results).
427    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
428       at face corners.
429    o pkg/generic_advdiff:
430     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
431      loop range indices for computing vertical advection tendency
432      and do the calculation in the interior only (no overlap) ;
433      for now, only implemented for SOM advection (to save CPU time).
434     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
435    o exch2 adjoint
436      First set of changes:
437      - add exch2 hand-written adjoint templates
438      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
439        This will require cleanup in pkg/autodiff/*.F
440        (changed routines currently kept separate in verif. code/)
441      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
442        that used to hide exch2 or cubed-sphere specific code
443        (commented via 'cph-exch2')
444    o pkg/seaice
445      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
446    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
447       output of global_ocean.cs32x15.thsice .
448    
449    checkpoint59e
450    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
451      for B-grid vector (not yet tested) and C-grid vector (<- only used
452      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
453    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
454      (#ifdef ALLOW_SALT_PLUME)
455    o gather_2d/scatter_2d: removed halo regions
456    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
457      scheme and the corresponding test case (under front_relax dir). For now,
458      only available with Skew-flux form and not yet tested in realistic set-up.
459      adjoint: store directives updated, but gradient checks deteriorated,
460      so maybe GM/Redi adjoint is now broken.
461    o seaice adjoint
462      * add AREA, HEFF, HSNOW as control variable
463        (should not change lab_sea results)
464      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
465    o pkg/seaice:
466      * added computation of saltFlux in seaice_growth;
467        For time being, sea ice salinity is assumed constant
468        contribution of snow flooding to freshening of sea ice is neglected.
469        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
470        defaults to 0.0 in order to maintain backward compatibility.
471        Typical values for SEAICE_salinity are 4 to 10 g/kg.
472      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
473      * added SEAICE_availHeatFrac, which specifies fraction of surface level
474        heat content used to melt or grow ice
475      * commented out cap of HICE: it helps keep ice thinner
476      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
477      * applied OBCS T/S mask to HEFFM sea ice mask
478    
479    checkpoint59d
480    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
481     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
482     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
483    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
484     and change default value of parameter "GM_Small_Number";
485     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
486       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
487       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
488    o pkg/ecco: cost function when applying pkg/smooth to controls
489    o pkg/ctrl: add forcingPrecond run time parameter
490    o pkg/seaice:
491     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
492     - fix bug in metric terms of u-equation in LSR solver (implicit part),
493       changes verification/lab_sea
494     - rearrange implicit part of u-equation in LSR solver to make it easier to
495       read, understand, and debug. This causes changes at the truncation level.
496     - fix (serious) bug in the boundary conditions (sign error in the implicit
497       part) of the LSR solver. Changes all LSR results.
498     - fixed problem with HSNOW initialization to avoid thick snow when AREA
499       is initilized with small values - does not change lab_sea results.
500     - added HsnowFile initialization capability
501    o pkg/smooth: addition to model/src and pkg/ctrl so allow
502     initialization of pkg/smooth and application to control vector
503    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
504    o dependencies: pkg/profiles requires pkg/cal
505    o pkg/profiles:
506     - added option ALLOW_PROFILES_GENERICGRID
507         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
508         that interpolation information (grid points and coefficients) is provided
509         within the netcdf input files.
510         -> sample matlab scripts can be found in MITgcm_contrib/gael
511         that allow you to prepare netcdf input files.
512     - also modified: cleaner include statements, cleaner error print statements,
513       cleaner stops when error, and more tests of the netcdf input files consistency.
514    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
515    o pkg/seaice:
516     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
517       requires a new routine: seaice_diagnostics_fill.F
518     - make sure that seaice does not move if not forced (pressure replacement
519       method, Hibler and Ip, 1995), changes results
520     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
521     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
522       It is turned off by default (=-1.), because it changes the results.
523     - make it possible to read AREA from a file, too.
524    
525    checkpoint59c
526    o add S/R and diagnostics for oceanic mixed-layer depth
527    o move GMRedi call after all vertical mixing schemes (including KPP)
528    o pkg/thsice:
529     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
530      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
531    o pkg/obcs:
532     - bug fix for balance code
533    o pkg/seaice:
534      - allow values of SEAICE_elasticParm > 1
535      - add new parameter SEAICE_evpTauRelax as an alternative
536        to SEAICE_elasticParm
537      - make lsr boundary conditions free slip (by default), changes result
538      - add code for no slip boundary conditions for lsr
539      - set minimum of zeta to zero (and not 4e8) (changes results)
540      - add a cap on AREA after advecting AREA if seaice_growth is not called
541    o change calculation of Visbeck K:
542      - no longer depend on tapering scheme; instead, compute slope (limited
543        by GM_maxSlope). this is equivalent to what was comuted before with
544        clipping or linear tappering.
545      - fix vertical averaging (wrong by 1/2 level)
546      - leave the old version (but will not be maintained) within
547        #ifdef OLD_VISBECK_CALC / #endif
548      - update output of exp. ideal_2D_oce
549    o change error catch in calc_r_star to improve vectorization
550    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
551      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
552    o adjoint:
553      Re-organized adjoint checkpointing according to Matt Mazloff
554      (but with modifs/completions/cleanups)
555      Storing is now bundled into large arrays to optimized I/O
556      (and second step in cleanup of the_main_loop)
557    
558    checkpoint59b
559    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
560      - export/import (between ocean & coupler) fields needed for ocean DIC.
561    o pkg/seaice:
562      - get rid of three more exchanges seaice_calc_viscosities (required
563        different loop boundaries in seaice_lsr and seaice_ocean_stress)
564      - bug fix in seaice_ocean_stress (update of lab_sea required)
565      - reduce loop boundaries to necessary minimum also in seaice_evp
566      - go back to the old way of computing deltaC/Z as the adjoint likes that
567        better
568    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
569      passive tracer to an Age Tracer) + update output.txt
570    o pkg/exf:
571      - implement A-grid / C-grid selection for wind-stress input files.
572      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
573      for now, in exf_bulk_largeyeager04.F only :
574      - change implementation for case where windspeed + 2. components wind-stress
575        are read-in. AND use rhoConstFresh to convert evap.
576    o pkg/seaice:
577      - use correct EXCH_UV for wind-forcing (on A-grid).
578      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
579        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
580    o pkg/exf:
581      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
582      EXF_INTERPOLATION:
583      - merge global_with_exf/code version of exf_interp_read.F
584        to the main code ;
585      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
586        reading the file ; Important: This options needs to be defined to recover
587        previous code.
588        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
589      - no longer loose real*8 precision along the way when using exf_iprec=64.
590    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
591      - change discretisation of evp-solver in order to avoid another exchange
592        (changes lab_sea) and clean up a little
593      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
594        help the adjoint (this also changes the results slightly)
595      - add a few "_d 0" where they had been missing in seaice_evp.F
596      - cleaning up: remove unused seaice_calc_rhs.F
597    o pkg/exf: some cleaning-up:
598      - change various "constants" into runtime parameters
599      - cleaned-up Large&Yeager04 routine which should eventually
600        replace exf_bulkformulae.F (changed names of S/R and CPP)
601        and merged various ALLOW_ATM_WIND options
602     only used with thsice pkg (in thsice_get_exf.F):
603      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
604        which are used when useStabilityFct_overIce=TRUE (= the default)
605      - change default values of ice & snow emissivity and scale downward LW
606        by ice & snow emissivity.
607    o pkg/thsice:
608     fix few little problems, in thsice_calc_thickn.F:
609      - growth vertically (and not laterally) if iceFrac == iceMaskMax
610      - melt only laterally if hIce < hThinIce (as the comments say)
611      and in thsice_extend.F:
612      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
613      - start to form ice as soon as the minimum ice-volume is reachable.
614     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
615      and cpl_aim+ocn
616    o pkg/kpp
617     - move computation of surface related input fields to KPP into a new
618       subroutine kpp_forcing_surf.F
619     - remove wrong (within bi,bj loops) EXCH calls.
620     - little cleaning (add argument myThid in last position, cvs header ...)
621     - for now, fix conservation problem by exchanging KPPviscAz (may not
622       be the best fix)
623    o pkg/seaice
624     - check for inconsistent evp parameter/cpp-flag combination
625     - remove leftover errIO flat for obsolete name list error handling
626    o OpenAD
627     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
628    
629    checkpoint59a
630    o pkg/seaice: some parameter clarifications and a little bit of clean up
631    o pkg/thsice: rename run-time parameters:
632       himin       -> hIceMin
633       himin0      -> hThinIce
634       hihig       -> hThickIce
635       i0          -> i0swFrac
636       transCoef   -> bMeltCoef
637       frac_energy -> fracMelting
638      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
639       with default values (for now) that do not change the results.
640      remove old version of thsice vars advection in pkg/seaice.
641    o in FFIELDS.h:
642      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
643      - make pLoad & sIceLoad always available (but still only used if
644         ATMOSPHERIC_LOADING is #define).
645    o pkg/kpp: replaced _KPP_RL with _RL
646    o bug fixes for vertical diffusivity computations when both KPP and
647        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
648        are no longer updating the vertical diffusivity array
649        (passed as argument) but are (re-) setting those arrays.
650    o pkg/seaice: fix bug in evp solver, while doing that
651      - change (improve?) discretization of stress computations for both
652        cgrid-lsr and evp solver
653      - add a new routine to compute strain rates
654      - the above changes lab_sea results
655      - add no slip conditions for evp solver (off by default), lsr-version
656        may follow
657      - fix exchange for shear at Z-points (does not change lab_sea)
658      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
659        (to force the user to pick a time step since there is not "safe" way
660        of choosing it)
661      - add principal stress diagnostics
662      - rearrange fields for evp a little to avoid having to call a: too many
663        exchanges and b: exchanges for stress trensor components which we do
664        not have.
665      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
666        of evp, complete rewrite for lsr case (latter is does not yet work
667        in all cases)
668    o pkg/kpp: add code to have mixing in shelf ice caverns
669      - add myThid to all kpp routines (long overdue)
670    
671    checkpoint59
672    o pkg/exf:
673      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
674        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
675      - move exf header files from lower_case.h to UPPER_CASE.h ;
676        add missing cvs Header & Name
677      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
678      - add namelist param. selectStressGridPosition, exf_monFreq
679      - retire many _CLIM routines, and remove data.exf_clim
680        + params moved to data.exf
681        + climsst, climsss now handled by exf_set_gen, i.e.
682          climss?period=0 refers to constant field,
683          climss?period=-12 to monthly forcing
684      - split up namelists in data.exf
685    o pkg/seaice:
686      - remove seaice_exch and seaice_exch_uv
687      - remove superfluous exchange of theta
688      - add myThid to seaice_budget_ocean/ice
689      - add new interface for atmospheric wind forcing (C-grid only)
690        + new routine
691        + two new field (taux, tauy for stress over ice)
692        + removed one global field (DAIRN) for C-grid case only
693    o pkg/thsise
694      - 2nd set of modifs for thsice adjoint in conjunction with exf
695    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
696    
697    checkpoint58y_post
698    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
699      vertical diffusivity, similar to that in MOM4; turned on using
700      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
701      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
702    o Added capability for 3D specification of background vertical diffusion
703      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
704      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
705      "data" file that contains the 3D vertical diffusivity coefficients.
706    o ice dynamics (pkg/seaice) with thsice thermodynamics:
707      - add code within pkg thsice to advect & diffuse sea-ice fields
708      similar to (and will replace) what has been added in  seaice_advdiff.F,
709      but: - conserving Mass, Heat & Salt.
710           - better when using non-linear advection scheme (not yet fully tested)
711           - can also be used in atmospheric set-up (for now, only the diffusion).
712    
713    checkpoint58x_post
714    o IO option for global-file compact format:
715      - add options when generating topology (utils/exch2/matlab-topology-generator)
716      - add I/O capability (pkg/mdsio).
717      - adapt utils/matlab/rdmds.m to read this format.
718      for now long-line format not yet supported by pkg/mdsio (& exch2).
719    o shelfice: add a few diagnostics
720    
721    checkpoint58w_post
722    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
723      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
724      (and replace horiVertRatio in NH code).
725      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
726                         and tutorial_plume_on_slope (sensitive to truncation)
727    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
728      directly to drive seaice model (C-grid only)
729    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
730     - reintroduce computation of wind from stress,
731     - compute tau (in exf_bulkformulae.F) from windstress averaged to
732       mass points to avoid tau = 0
733     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
734    o rdmnc.m: make it work with "global" files created with gluemnc
735    o rdmnc.m : some improvements in dealing with singleton dimension
736      (tested on all testreport mnc output files).
737    o genmake2: disable pkg/profiles if netcdf test fails.
738    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
739    o move call to cal_readparms up to make calendar parameters/variable available
740      to all packages
741    
742    checkpoint58v_post
743    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
744      useDynP_inEos_Zc tested.
745    o pkg/exf: changes to properly interpolate/mask/scale initial fields
746    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
747      and portions thereof.  See read_cs.txt for description and examples.
748    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
749      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
750      following the great-circle arc between those 2 points.
751    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
752      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
753    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
754     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
755     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
756     - still needs work (not working with some options ; efficiency to improve)
757       and serious testing.
758     - use this scheme for temperature & salinity in 2 advection test exp.:
759       advect_xy & advect_xz, respectively.
760    
761    checkpoint58u_post
762    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
763    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
764    o testreport: add option "-skipdir" to skip some test.
765    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
766      momentum calculation.
767    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
768    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
769      remove checkpoint.F and the_correction_step.F (no longer used);
770      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
771    o add option (linFSConserveTr) to correct for tracer source/sink due to
772      Linear Free surface
773    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
774    o pkg/thsice: fix reading mnc-pickups
775    
776    checkpoint58t_post
777    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
778    o pkg/mdsio:
779     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
780       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
781       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
782     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
783     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
784       either MDS_READ_FIELD or MDS_WRITE_FIELD )
785     - new S/R (to replace MDSWRITEMETA), which allows to write more
786       informations (variable names, time ...) to meta files.
787     - modify rdmds.m to give back the meta file content.
788    o pkg/diagnostics: change vertical interpolation to be safer, and more
789       flexible (define p-levels to interpolate to in data.diagnostics);
790      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
791       diagnostic pointer.
792    o pkg/seaice: more cleaning up of seaice_growth, added many comments
793    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
794    o fix multi-category seaice:
795     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
796       SEAICE_MULTICATEGORY
797     - fix short wave heat flux
798    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
799       and allow to use EVP solver. Change forward lab_sea: test both EVP
800       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
801    o Initial check-in of lab_sea adjoint
802      (very similar to natl_box_adjoint/code_seaice)
803      * used C-grid and EVP solver
804      * used KPP, GM/Redi
805      * uses inAdExact=.TRUE.
806      * gradient checks fail for both ADM and TLM
807        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
808        f.d. gradients actually seem more problematic than ADM, TLM gradients;
809        issue is related to forward mismatch between g77 an ifort
810    o pkg/seaice: overhaul of thermodynamics
811     - growth.F and groatb.F are replaced by new routine seaice_growth.F
812     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
813     - move a few global fields out of SEAICE.h into seaice_growth.F and
814       make them 2D (FICE/QNETO/ ...)
815     - remove FO (it is the same as QNETO)
816     - introduce a few local fields to avoid modifying external fields such
817       as atemp, etc.
818    
819    checkpoint58s_post
820    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
821      changed exf_set_gen.F so that
822        genperiod=0 means input file is one time-constant field and
823        genperiod=-12 means input file contains 12 monthly means
824    o CG2D: use pre-computed solver main-diagonal (stored in common block);
825      this affects truncation error ; generate new output file for exp. which
826      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
827        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
828        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
829        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
830        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
831        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
832    o start implementation of deep-atmosphere and anelastic formulation
833    o verification: remove 2nd copy of input files and use script "prepare_run"
834      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
835    o mom_common/vecinv/fluxform: fix a few initialisation isssues
836    o profiles: fix for multithreaded case
837    
838    o diagnostics: rename few diags:
839      s/'PRESSURE'/'RCENTER '/g
840      s/'TICE    '/'oceFreez'/g
841      s/'TAUX    '/'oceTAUX '/g
842      s/'TAUY    '/'oceTAUY '/g
843      s/'SWFLUX  '/'oceQsw  '/g
844      s/DIFx/DFxE/g
845      s/DIFy/DFyE/g
846      and add few ocean-forcing diagnostics:
847      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
848    o modifications to pkg/seaice/growth.F and budget.F, which change results of
849      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
850      as actual snow thickness.  It now refers everywhere to effective snow
851      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
852    
853    checkpoint58r_post
854    o modifications to pkg/seaice/growth.F, which change results of
855      lab_sea experiment: fixes pertain to melting snow over open water, to
856      masking EVAP under sea ice, and to using the correct AREA variable for
857      computations of EVAP, PRECIP, HSNOW, and GHEFF
858    o add ability to read bathy, salt, and theta using MNC (off by def)
859    o add flooding algorithm and advection of HSNOW for pkg/seaice;
860      both are turned off by default and do no change any results
861    o seaice advection with pkg/thsice: a step toward the use of non-linear
862      advection scheme, but #ifdef or commented out for now (requires more EXCH).
863    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
864      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
865      in natl_box (affects results @ truncation level: update output.txt)
866    o multi-threading and IO:
867      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
868      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
869        (needed to work with SingleCpuIO): tested in all verif. exp.
870    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
871      affects the results (but none of the verification test uses this scheme).
872    o Adding some pkg/diagnostics capability to pkg/seaice
873      (will certainly be subject to changes)
874    o ctrl: adding new control variables:
875      lwflux, lwdown, evap, snowprecip, apressure, runoff
876    
877    checkpoint58q_post
878    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
879      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
880      high_res_cube configuration by 4% on Columbia.
881    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
882      add (in global_with_exf/code) a version of EXF_INTERP_READ without
883      dynamical allocation (seems to work in multi-threaded).
884    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
885      single CPU io) so that TAF does not have to see EESUPPORT.h
886    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
887    
888    checkpoint58p_post
889    o obcs: stop if obcs is used with useCDscheme = .true.
890    o shelfice:
891     - fix a sign error so that no slip at shelfice interface works
892     - remove stop for combination non-hydrostatic code and shelfice. That does
893       not mean, that the results are correct, but at least they are numerically
894       stable
895    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
896    o added adjoint exch routined for all exch*3d* routines
897      and updated flow directives
898    
899    checkpoint58o_post
900    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
901      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
902    o change controling S/R for writing pickup file (new S/R do_write_pickup)
903      and clean-up reading/writing of pickup files.
904    o fix local version of read/write pickup (NH part) in rotating_tank/code
905    o simplify EXCH interface:
906     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
907     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
908    o added the regrid package
909    o shelfice:
910     - add a simple boundary layer scheme to reduce noise
911     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
912    
913    checkpoint58n_post
914    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
915       local variable (not in common block).
916    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
917      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
918      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
919        to work with SingleCpuIO.
920    o add "_d 0" to real constant of pkg/cfc subroutines ;
921       update exp. cfc_exemple & tutorial_cfc_offline output files.
922    o multi-threading and IO:
923      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
924        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
925      - barrier before and after reading.
926      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
927      - avoid using MDS_WRITELOCAL for LAND pkg output.
928      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
929        common-block variables ; Allows multi-threading with master-thread IO.
930    o change default MAX_NO_THREADS from 32 to 4 ;
931      and stop cleanly when MAX_NO_THREADS is too small.
932    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
933    
934    checkpoint58m_post
935    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
936       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
937    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
938       keep global_ocean.90x40x15 (for AD testing) with former secondary test
939       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
940    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
941        add MITgcm_tutorials (= code + all the tutorials)
942    o ecco, option to compute cost for total ssh (mean+anom)
943    o consistent with addition of ptracer and ssh in pkg/profiles
944    o profiles: adding ptracer and ssh
945    o testreport: change multi-test output-file name
946      (from output.txt.{name} to output.{name}.txt)
947    o profiles: now ok for mutli-tiles case
948    o seaice: add 4 parameters for different advection schemes for area,
949      (effective) seaice thickness, enthalphy, and snow height. Their default
950      is the standard parameter SEAICEadvScheme
951    o calc_gw:
952     - add cosFacU in zonal viscous flux (harmonic.visc.).
953     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
954       of tutorial_plume_on_slope.
955    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
956    o calc_gw: true flux-form, account for horizontal grid spacing.
957      update rotating_tank results, but not plume_on_slope (affected at
958      truncation level, 11 digits).
959    
960    checkpoint58l_post
961    o calc_gw:
962     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
963     - remove side-drag for now (need to fix it); update plume_on_slope results.
964     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
965    o commit code to make SST/SSS weights spatially variable
966      (based on either variable in-situ or variable initial T/S weights)
967    o pkg/ecco:
968      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
969        now based on horizontally varying weights wthetaLev, wsaltLev
970      * cost_averagesflags now returns year indices in addition to day, month
971      * sflux balance is performed on annual basis
972        (sflxumm, sfluxmm2, bal_sfluxmm)
973      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
974        including separate counting and multipliers
975    o pkg/rbcs
976      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
977    
978    checkpoint58k_post
979    o testreport:
980     - always build in dir. "build" (if not there, mkdir build instead of building
981       & running in input)
982     - run in dir run (if it exists), in build otherwise.
983     - call prepare_run (if input/prepare_run exists)
984     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
985    o pkg/exf modifications to interpolation and rotation routines for more
986       reasonable treatment of North Pole singularity: for tracers North Pole
987       value is set to northernmost zonal-mean value, for zonal velocity it is
988       set to zero, and for meridional velocity it is set to northernmost value.
989    o pkg/exf/exf_check_range.F
990     - add tile index to diagnostics and move stop statement to the very
991       end of the routine.
992    o pkg/diagnostics: (diagnostics_main_init.F)
993      define title of isomorphic variables according to the current config.
994    o pkg/thsice with pkg/seaice dynamics:
995    - fix domain of computation (interior only, required for exf) and do exchanges
996    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
997    o towards a standard way of dealing with multi-threading in MONITOR
998      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
999    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1000       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1001    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1002    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1003    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1004       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1005    o tracer advection:
1006     - clean-up and simplify calc_common_factors.F
1007     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1008       advection subroutine (but still not used within DST advection S/R)
1009    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1010    
1011    checkpoint58j_post
1012    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1013      from file (collects calls previously in FORWARD_STEP)
1014    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1015    o adjoint store dir. adjusted accordingly
1016    o genmake2
1017      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1018    
1019    checkpoint58i_post
1020    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1021      on wind stress (SEAICEstressFactor defaults to 1.)
1022    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1023      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1024    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1025      on CS-grid: no longer loosing mass.
1026    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1027    o pkg/ggl90: fix sloppy output and fix a bug
1028    o pkg/seaice: added SEAICEuseEVPpickup parameter
1029      - Set to false in order to start EVP solver with
1030        non-EVP pickup files when using SEAICEuseEVP
1031      - fix sign error in diffusion in seaice_calc_rhs
1032    
1033    checkpoint58h_post
1034    * Modifications for bottom topography control
1035      o replace hFacC by _hFacC at various places
1036      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1037      o add non-self-adjoint cg2d_nsa
1038      o update autodiff support routines
1039      o re-initialise hfac after ctrl_depth_ini
1040      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1041    * Adding verification for 5x5 box (4-layer) bottom topography control
1042    
1043    checkpoint58g_post
1044    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1045       used for mean seasonal cycle, mean diurnal cycle); add an example
1046       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1047    o pkg/ggl90:
1048      - add parameter (minimum surface kinetic energy)
1049      - fix bug (avoiding division by zero)
1050    o couple pkg/thsice to pkg/seaice:
1051      - modify advection in seaice to accomodate new scalar fields to be advected
1052      - only muliDimAdection scheme work with seaice/thsice
1053      - mapping of thsice-variables to seaice-variables, back and forth
1054      - does not break the verification experiments, but does not give the
1055        desired results either
1056    o pkg/seaice
1057      - make (default) second order advection a bit less confusing?
1058    
1059    checkpoint58f_post
1060    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1061      to pkg/seaice):
1062      - new routines thsice_map_exf and thsice_get_exf provide the interface
1063      - add an additional formal parameter to thsice_solve4temp
1064    o pkg/exf:
1065      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1066      - correct Stefan-Boltzmann constant
1067      - new parameter for longwave surface emittance
1068      - separate some stuff from exf_bulkformulae into new routines  
1069        exf_radiation, exf_wind
1070      - add new parameters and constants: longwave emissivity for ocean, ice
1071        and snow, evaporation parameters over ice
1072      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1073        either wind from stress or stress from wind
1074    o pkg/thSIce:
1075    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1076    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1077       and THSICE_CALC_THICKN
1078    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1079    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1080      to make debugging easier.
1081    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1082    o pkg/bulk_force:
1083      - clean-up comments and parameters ;
1084      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1085    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1086      generate new output for test-experiment: aim.5l_cs.thSI
1087    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1088      testreport accordingly
1089    
1090    checkpoint58e_post
1091    o SEAICE_CGRID adjoint done
1092    o R_STAR adjoint implemented.
1093      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1094      * need to sort out init. of h0facc, etc.
1095    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1096      to be able to use it in pure forward.
1097    
1098    checkpoint58d_post
1099    o upgrade simple test-experiment to tutorial example:
1100     step.1: duplicate the experiment and (step.2) will remove the old copy.
1101      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1102      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1103      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1104      tutorial_global_oce_biogeo    <- copy of dic_example
1105      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1106      tutorial_plume_on_slope       <- copy of plume_on_slope
1107      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1108      tutorial_global_oce_optim     <- empty for now (David ?)
1109      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1110     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1111    o correct a sign problem in cost_scat.F
1112    o obcs and ptracers: fix boundary conditions for advections schemes
1113      with larger stencil
1114    o thsice adjoint: start
1115    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1116      completeness
1117    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1118      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1119    o ptracers adjoint:
1120      * avoid extensive recomputatations
1121      * fix missing re-init. of gptr (missed by TAF)
1122    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1123      me to turn off the excessive output to STDOUT that this package produces
1124    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1125      and add those terms in Vector-Invariant formulation.
1126    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1127      if the control period (xx_hfluxperiod etc) is 0
1128    o in profiles pkg, clean routines and fix details
1129    o in ecco pkg, reading ssh data:
1130      fix problem in case the model does not start at iter0=0
1131    o fix mnc-pickup/restart for ptracers
1132    o new package prifiles:
1133      code to compute profile-based cost by Gael Forget
1134      (modifs in ecco, ctrl, autodiff)
1135    o Benign bug fix in initialization (spotted by M. Mazloff) of
1136      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1137    
1138    checkpoint58c_post
1139    o adjoint: finish NLFS adjoint and provide reference output in
1140      verification/global_ocean.90x40x15/results_ad_nlfs
1141    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1142      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1143      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1144      with SEAICE_CGRID defined.
1145    o move calendarDumps from "data" to "data.cal" and clean-up the code
1146      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1147    o add useEXF & useCAL flags (for now, set in hard-coded way)
1148    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1149      (were missing in NH mode, and wrong in quasihydrostatic mode).
1150      waiting for Chris updated version of calc_gw to add those CALLs.
1151    o fix bug in quasihydrostatic S/R ;
1152      add a test for this option: global_ocean.90x40x15.qshyd
1153    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1154      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1155    o add on/off flag useOffLine for package OFFLINE
1156    o seaice:
1157      - modify advection so that it works also on the C-grid
1158      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1159        problem in multi-tile runs with C-grid
1160      - add flags for clipping ice velocities and/or masking solver forcing
1161      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1162        C-grid solver
1163      - added a few comments to seaice_diffusion.F
1164      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1165        are now exclusive)
1166      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1167        required re-ordering the code a little:
1168       + make DAIRN global variable (defined in SEAICE)
1169       + move computation of the viscosities eta and zeta into a new separate
1170         routine (because I need to recompute them in seaice_ocean_stress.F)
1171    
1172    checkpoint58b_post
1173    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1174      update output.txt of exp. aim.5l_cs.thSI
1175    o various mnc cleanups and improvements:
1176      + shrink lookup tables by factor of ~4
1177      + better error reporting when running out of lookup space
1178      + able to handle longer path/file names (up to 500 chars)
1179    o adjoint:
1180      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1181      - TBD: "hidden" mom_vecinv recomp. in dynamics
1182    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1183     (allow to differentiate between forcing components using new integer flags:
1184      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1185     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1186    o ecco
1187      - enable trend removal from SSH anomaly obs.
1188    o adjoint
1189      - a fix for PmEpR when #undef EXACT_CONSERV
1190      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1191      - try to fix "hidden" recomp. in forward_step for NLFS
1192        (NLFS seems broken sometimes after I checked it in)
1193    o seaice:
1194     - add c-grid version of the dynamic solver:
1195       + three new routines that are the c-grid substitute lsr, dynsolver
1196         and ostres
1197       + put a few fields that were local to dynsolver into global common
1198         blocks, so that I can move the computation of stresses etc into
1199         seaice_lsr (saves coding but may break the adjoint).
1200     - replace more hardwired parameters by runtime parameters
1201     - add ice masks that mask the rhs of the implicit solvers where there
1202       is no ice (commented out in seaice_dynsolver, because i am not sure
1203       if this works properly), eventually this should replace the clipping
1204       of ice velocities in seaice_dynsolver to +/-40cm/s.
1205    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1206      include it only where its needed
1207    o move balancing of fluxes before the call of external_forcing_surf
1208    o seaice:
1209      - correct units of turning angles (now they are really in degrees)
1210      - move computation of GWATX/Y out of main routine into dynsolver
1211      - initialize GWATX/Y in seaice_init
1212    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1213      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1214    o seaice: add runtime flags for turning angles (default to zero)
1215    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1216      and trend from exf forcing and ctrl control adjustments
1217    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1218      (since checkpoint57x_post)
1219    o change the default rotation period to 86164.s = the Earth rotation
1220    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1221      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1222    o seaice advection: add code for choosing between the default (2nd order
1223      central differences) and multiDim advection schemes provided by
1224      pkg/generic_advdiff
1225    o seaice:
1226      - removed all references to SEAICE_GRID.h fields from
1227        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1228        (cubed-sphere configuration will change a little)
1229      - grid computations in seaice_init are obsolete now.
1230      - cleaned up code a little so that is easier to read (hopefully).
1231      - added new (better?) discretizations of default advection and diffusion
1232        (turn on with SEAICEuseFluxForm)
1233      - replace 1 in 3d global fields by kSurface in growth.F
1234      
1235    checkpoint58a_post
1236    o seaice:
1237      - bug fix in advect.F
1238    o shelfice:
1239      - separate shelfice load anomaly from pload (breaks with time
1240        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1241        Its default is 0., but it may be computed more cleverly from (unknown)
1242        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1243        done offline. A good approximation of the pressure load anomaly is
1244        necessary to avoid large initial adjustment processes underneath
1245        deep-reaching shelfice.
1246      - small fix in ISOMIP shelfice_thermodynamics
1247      - add more sophisticated thermodynamics of Hellmer (1989), this is
1248        now the default
1249      - give a few constants more intuitive names
1250    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1251      if bulk formulae are used in long integration (especially EmPmR). Turn
1252      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1253      if balancePrintMean, the imbalance that is substracted is printed to
1254      STDOUT.
1255    o fix bug (typo) in obcs_apply_eta.F
1256    o add a new package shelfice which enables us to model the circulation
1257      underneath shelf-ice with draughts of hundreds of meters.
1258     - works
1259     - to do: + include improved thermodynamics
1260              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1261                instead of new field kTopC
1262              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1263                instead of new field R_shelfIce and new code in ini_depth.F
1264                and ini_mask_etc.F?
1265              + adjust vertical mixing schemes?
1266    o seaice pkg:
1267     - add a cpp-flag to include a simple formula for a salinity dependent
1268       freezing point of sea water at the surface
1269     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1270       meridional stresses are now different (and hopefully correct)
1271    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1272       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1273       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1274    o pkg/diagnostics: add options and parameters for regional-statistics
1275       diagnostics ; define regions by reading a region-mask from a file
1276       (might add other options later)
1277    o pkg/bulk_force:
1278     - add option and parameters to use AIM surface-flux formulae.
1279     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1280       others forcing fields (defined in PARM05, parameter file "data") are loaded
1281       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1282     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1283     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1284     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1285       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1286     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1287    
1288    checkpoint58
1289    o add "--embed-source" option to genmake2 which, when the supporting
1290      tools can be compiled (as determined by genmake2) will turn on the
1291      embed_files package which then embeds the entire MITgcm source code
1292      (*.[fFhc] + Makefile) used for the build within the executable
1293      - requested by CNH but off by default
1294      - adds a paltry <9MB to the mitgcmuv executable in most cases
1295      - only writes the output when useEMBEDSRC in eedata is true
1296    o clean up 3-dim. relaxation codes:
1297      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1298      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1299      * Thanks to Tom Haine for testing!
1300    
1301    checkpoint57z_post
1302    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1303      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1304    o fix the pickup behavior for obcs in combination with ptracers
1305    o fix a bug in ptracers_external_fields_load
1306    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1307      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1308    o transfered surface NH pressure to eta field (if exactConserv).
1309    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1310         and update lab_sea output.txt file.
1311    o completing 3-dim. relaxation code: additional term
1312         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1313      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1314      * At compile time, in "EXF_OPTIONS.h" set
1315          #define  ALLOW_CLIMTEMP_RELAXATION
1316          #define  ALLOW_CLIMSALT_RELAXATION
1317      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1318          tauThetaClimRelax3Dim = 15552000.0,
1319          tauSaltClimRelax3Dim  = 15552000.0,
1320      * 3 cases:
1321          1) Use a constant-in-time 3-dim. field
1322          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1323          3) Real-time relax. to time-evolving prescribed field
1324    o Adding Laplacian-type smoothness constraint on
1325      initial and boundary (forcing) controls (ic, bc)
1326      * enable at compile-time via
1327        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1328      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1329      * Absolute scale somewhat unclear so far
1330      * no area weighting was included since no other cost term does so far
1331    
1332    checkpoint57y_post
1333    First step for a NLFS adjoint
1334    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1335    o new init. routines for calc_r_star, calc_surf_dr
1336    o still need to deal with ini_masks_etc
1337    o testreport seemed happy
1338    checkpoint57y_pre
1339    
1340    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1341    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1342    o add new offset feature to offline pkg (plus minor cleanup)
1343    o cfc fixes for final year of integration
1344    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1345      be in GCHEM_OPTIONS).
1346    
1347    checkpoint57x_post
1348    o fix testreport Pb in multiple test experiment.
1349    o cleanup our namelist syntax in verification:
1350      - make it more F95 standards compliant (some work still needed)
1351      - allows the vast majority of our tests to work with gfortran
1352    o Non-Hydrostatic:
1353     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1354     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1355    o Allow to apply AB on T,S rather than on AB(gT,gS):
1356     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1357     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1358       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1359     - need a "clever" read_pickup to restart from the other AB formulation
1360    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1361    o remove some unused variables (reduces number of compiler warnings)
1362    o adjoint
1363      * Disable useVariableViscosity for adjoint for time being
1364        (there are a number of extensive recomputations)
1365      * Initialize certain variables needed for adjoint
1366    
1367    checkpoint57w_post
1368    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1369                 fix the singleCpuIO RS version of MDSWRITEFIELD
1370       and add a WARNING if using globalFiles=T with multi-processors.
1371    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1372      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1373    o tracer advection scheme:
1374      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1375       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1376       was not very convenient).
1377      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1378       (further tests needed for the implicit DST & Flux-Limiter schemes).
1379    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1380      and sRef for convenience, handy, when you want to initialize
1381      ptracers in a large domain with a constant non-zero value. Also,
1382      untangle ptracers_init.F a little.
1383    
1384    checkpoint57v_post
1385    o change dome exp. to use variable viscosity in side-drag terms.
1386    o remove all the files from the cfc_offline test since they are now
1387      incorporated into tutorial_cfc_offline which has been producing
1388      identical results for a few days of testing
1389    o add new parameter: sideDragFactor to enable half-slip-side BC
1390      and change side-drag S/R to use viscosity from mom_calc_visc
1391      (can switch back by setting sideDragFactor=0.); affects results at
1392      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1393       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1394    o vorticity & strain are now computed without masking, to account for
1395      no-slip-side BC in variable viscosity calculation ; mask is applied
1396      anyway later on, before computing advection/coriolis terms.
1397    o modify exp4 to test new obcs support for reading from external files
1398      and for passive tracers
1399    o fix behavior of ptracers_monitor when monitor output is written to a
1400      netcdf-file; still not independent of monitor.F (writes in the same
1401      file).
1402    o change default value of tRef (put a uniform, meaningful value for ocean
1403      & atmos) and initialize sRef (was missing, as Martin mentioned).
1404    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1405      to be proportional to enstrophy dissipation length.  Thus,
1406       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1407      This is now consistent with Smagorinsky and with the manual.
1408    
1409    checkpoint57u_post
1410    o OBCS and PTRACERS: add open boundary support for passive tracers
1411      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1412        OB-values from file; this is not different from the way theta and salinity
1413        are treated
1414      - however, Orlanski-radiation conditions are not supported, and the model
1415        will stop if you use pTracers and Orlanski at the same time.
1416      - beefed up the rountine obcs_external_fields_load: now only those open
1417        boundary values are overwritten with values from files for which there
1418        are really files, otherwise the OB-fields remain untouched. This makes
1419        it possible to use different OBs at different ends of the domain (as
1420        with EXF)
1421    o reduce number of exch calls in shap_filt (s2).
1422    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1423      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1424    
1425    checkpoint57t_post
1426    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1427    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1428      same truncation, independent of the face number: affects affects several
1429      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1430    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1431      note that biharmonic viscosity + no-slip was not tested in any experiment.
1432    o fix bug in non-linear free-surf side-drag ; generate new output for
1433      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1434    o make mnc honor the writeBinaryPrec flag for most kinds of output
1435    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1436    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1437      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1438    o add brackets in multi-terms sum to get same truncation, independent of
1439      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1440      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1441    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1442      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1443      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1444      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1445      Suggested values of viscosity parameters found in mom_calc_visc.
1446      Many new viscosity diagnostics available.
1447    
1448    checkpoint57s_post
1449    o Add clearing-house for viscosity calculations, mom_calc_visc and
1450      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1451      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1452      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1453      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1454      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1455      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1456      ViscAhStrain and viscAhTension are now retired.
1457    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1458    o In response to JMC's bug report, genmake2 now ignores any soft-links
1459      that it finds in the *current* directory when searching for files.
1460      Soft-links found in any other source directories will still work as
1461      they did before.
1462    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1463      a C routine to unlimit the stack size
1464    o mnc-ify pkg/aim snapshot vars
1465    o mnc-ify pkg/land as requested by Daniel
1466    o various changes to mnc including:
1467      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1468      - output can now be grouped so that all files within a group
1469          change the ITER portion of their names in lock-step together
1470      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1471          and works with both EXCH1 and EXCH2 (but needs more testing)
1472      - writing works for all verification test cases w/ g77 on Linux
1473    
1474    checkpoint57r_post
1475    o make MNC variable initialization happen earlier
1476    o add diagnostics for (almost) each term of the momentum Eq.
1477    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1478    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1479    o remove MINIMAL_TAVE_OUTPUT option ;
1480      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1481    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1482      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1483    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1484    o add time-dependent SST, SSS control
1485    o cost terms in ecco/ modularized (new cost_generic.F)
1486    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1487    o new infrastructure for seaice model vs. obs misfits in seaice/
1488      * driver from the_main_loop.F is seaice_cost_driver.F
1489      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1490      * gradient check in Exp. 6a of natl_box_adjoint/
1491    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1492      (see README file)
1493    
1494    checkpoint57q_post
1495    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1496    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1497      - bug was reported by Jean-Michel and Ian Fenty
1498    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1499      update exp. cpl_aim+ocn output.
1500    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1501      Needed for high-res. runs with large global files
1502      to be able to limit tapelev size
1503    o Changed some tests for adjoint:
1504      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1505      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1506      * global_ocean.90x40x15/ back to default 3-level checkpointing
1507    o Modifications to enable scripted COMMON to MODULE conversion
1508      * verification/OpenAD/code/ has necessary scripts and description;
1509      * converts, compiles and runs successfully;
1510    
1511    checkpoint57p_post
1512    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1513    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1514      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1515    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1516    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1517      (was already the case for dissipation with mom_vecinv,
1518       and also the case for grad.PhiHyd when staggered-timeStep)
1519      This will allow to put dissipation out-off the AB time-stepping.
1520     Unfortunately, affects truncation error. Update output of exp. that "fails"
1521      (cg2d matching number) and leave the others for later: front_relax(10),
1522      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1523      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1524    
1525    checkpoint57o_post
1526    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1527      (2) its ready to be documented during the 20050801 DocFest
1528    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1529      for ideal_2D_oce and lab_sea on linux_ia32_g77
1530    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1531      in global1x1_tot/code_seaice_adj to access indices 32, 33
1532      (worth another tag)
1533    
1534    checkpoint57n_post
1535    o adding precip control xx_precip 32
1536    o adding swflux control xx_swflux 33
1537    o Replacing 10 forcing penalty cost routines by 1 generic.
1538    o Implementing partitioning in time-mean and variable adjustment
1539      for atmos. state.
1540    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1541    o in natl_box_adjoint:
1542      * updated exp 1 to 10
1543        (but does not have time-mean vs. variable split results yet)
1544    o updated global1x1/*_seaice_adj/
1545      to incorporate latest changes
1546    o enable useSingleCpuIO for mdsio vector routines
1547      (applies in particular to tapelev I/O)
1548    o removed inefficient K-loop in all active_file*control*.F
1549    
1550    checkpoint57m_post
1551    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1552      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1553    o pkg/exch2: filling of face-corner halo regions is optional
1554      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1555    
1556    checkpoint57l_post
1557     tag before updating tutorials (pre-release-2)
1558    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1559       for output and interpolation of input fields onto model grid)
1560    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1561       Affects results of exp. rotating_tank ; update output.txt.
1562    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1563          and taking the square quantity and/or using a fraction-weight field.
1564    o fix aim_diagnostics_init.F mate numbers.
1565    o add mnc output capability to diagnostics/diagstat and update
1566      our cvsignore files for the ACSII output generated
1567    
1568    checkpoint57k_post
1569    o lab_sea now uses diagnostics package and provides a suite of
1570      new EXF diagnostics output.
1571    
1572    checkpoint57j_post
1573    o exf
1574      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1575        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1576        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1577      * extended diagnostics output
1578        - now includes all EXF variables
1579        - hs, hl moved to common block
1580        - separate S/R for diagnostics, called after ctrl vector is added
1581        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1582        - EXFqnet contains true Qnet (i.e. includes qsw)
1583      * updated verif. lab_sea, global_with_exf
1584      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1585        to ensure that diagnostics sees a true EXFqnet
1586    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1587    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1588      several times with different frequencies.
1589    o mnc-ify the thsice package as requested by Daniel Enderton
1590      - the monitor--MNC output needs work
1591      - many attributes need to be added (most are currently blank)
1592    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1593      - many attributes need to be added (most are currently blank)
1594    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1595    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1596    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1597      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1598         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1599    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1600     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1601    
1602    checkpoint57i_post
1603    o Diagnostics package was changed: diagnostic allocation is now deactivated
1604      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1605    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1606      add 1rst Order upwind vertical Shear.
1607    o add a quick fix for A/B checkpointing in OFFLINE mode
1608    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1609      end-run around the C/Fortran linking horror in eesup/src/timers.F
1610    o added pkg/runclock: allows user to terminate run based on wall clock
1611    o added non-hydrostatic scaling parameter: nh_am2
1612    o pkg/my82: futile attempt to make results compiler-independent by adding
1613      some "_d 0", etc. no effect.
1614    o for mnc output, fill the 'T' coordinate var with myTime and create a
1615      separate 'iter' variable for iteration count
1616    o pkg/diagnostics:
1617      add new capability: output of Global/Regional & per-level statistics ;
1618      tested against monitor output (including land & thSIce) on various exp.
1619    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1620    
1621    checkpoint57h_done
1622      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1623      data.diagnostics, data.gchem, data.ptracers) is done.
1624    
1625    o pkg/diagnostics: prepare for Global/Regional statistics.
1626      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1627    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1628      and rename it: DIFFERENT_MULTIPLE
1629    
1630    checkpoint57h_post
1631    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1632    o pkg/diagnostics: change output frequency, now in seconds (instead
1633      of Nb of iterations). This requires to change data.diagnostics.
1634    checkpoint57h_pre
1635    
1636    o in mnc, let the user create the output dir if both mnc_outdir_date
1637      and mnc_outdir_num are false
1638    o add fflags() to pkg/diagnostics which allows one to specify, on a
1639      per-file basis, the file precision [default behavior is unchanged]
1640    o added diagnostics to pkg/kpp, including computation of mixed layer
1641      depth based on a temperature/density criterion
1642    o updated verification/natl_box to test the new pkg/kpp diagnostics
1643    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1644    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1645    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1646      not mnc -- this mistake was found by JMC and is now corrected
1647    
1648    checkpoint57g_post
1649    o add Adams-Bashforth 3rd Order time stepping:
1650      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1651      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1652    checkpoint57g_pre
1653    
1654    o make lambda[Theta,Salt]ClimRelax spatially varying
1655      (default remains spatially uniform constant based on tau)
1656    o added new control variables
1657      * init. uVel, vVel, etanN
1658      * lambda[Theta,Salt]ClimRelax
1659    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1660      (suggested by G. Forget)
1661    
1662    checkpoint57f_post
1663    o add parameter "baseTime" = model base time = time at iteration zero
1664      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1665      account for baseTime shift
1666    o move Coriolis arrays from PARAMS.h to GRID.h
1667    checkpoint57f_pre
1668    
1669    o mnc-ifying the seaice package
1670    o introduced an alternative length scale calculation for use in the limiting
1671      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1672    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1673    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1674      as well as grad(vort3).  Made it compatible with both approximate form
1675      for the cubed sphere and full form of these gradients.  Added flag
1676      useFullLeith to select between approximate and full form.  
1677    o add "d0" in getcon.F to reduce differences between compilers/platforms
1678      update output.txt of exp. fizhi-gridalt-hs
1679    o change port_rand funtion to allow to set the seed.
1680    o fix obscure MNC bug involving conversion between reals and integers
1681      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1682        new version is now more standards-compliant
1683    o adjoint-related modifications
1684      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1685      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1686      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1687    
1688    checkpoint57e_post
1689    o Adding eddy stress controls a la Ferreira et al.
1690    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1691    
1692    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1693      update output.txt of exp. fizhi-gridalt-hs
1694    o add more "Z" dimensions and associated coordinate vars to MNC
1695    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1696    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1697      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1698      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1699      months and years.  Requires pkg/cal.
1700    o diagnostics: add pickup functionality
1701      - off by default for backwards compatibility
1702      - current version only uses MDSIO -- MNC will be added
1703    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1704    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1705    
1706    checkpoint57d_post
1707    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1708    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1709      output from the diagnostics package
1710    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1711    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1712      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1713    o add coordinate variables to the MNC output from the diagnostics package
1714    o change MNC-flags default value: true when useMNC=TRUE
1715    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1716      the ability (off by default) to read the grid information using MNC
1717    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1718    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1719    o do snap-shot diagnostics at the middle of the time-interval (instead of
1720      at the end).
1721    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1722      new test for AIM with thSIce + slab-ocean
1723    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1724    o move state variable diagnostics to the beginning of the time step ;
1725      (note: still needs some work specially for snap-shot diagnostics)
1726      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1727    
1728    checkpoint57c_post
1729    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1730    o generate new output.txt files on faulks with g77 & the new -ieee option
1731    checkpoint57c_pre
1732    
1733    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1734      update output.txt of exp. global_ocean.90x40x15
1735    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1736      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1737    o add saltFlux(+File) forcing capability with periodicExternalForcing
1738    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1739    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1740    o improvements for the MNC output from DIAGNOSTICS:
1741      - correct handling of the unlimitied dimension
1742      - all dims now have associated coordinate variables
1743      - variables located at U, V, and Corner ("Z") points are now written
1744        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1745        *all* data points are output
1746    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1747    o added pkg/seaice/seaice_monitor.F
1748    o mdsio_readfield.F can now read files visible only to master MPI process.
1749    o pkg/seaice: some test code for ice-modified ocean stress
1750    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1751      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1752      spurious negative numbers for precipitation and humidity.  Will cause
1753      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1754    o pkg/ctrl/
1755      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1756        May be enabled via doPackDiag
1757      *  introduce z-scaling of
1758         + gradient (doZscalePack) and
1759         + control (doZscaleUnpack)
1760    o pkg/mdsio/
1761      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1762      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1763    
1764    checkpoint57b_post
1765    o simplify options in diagnostics_fill arguments (remove weird combinations)
1766    o fix MNC coordinate variables so that they now contain per-face index
1767      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1768      general, EXCH2 grids are only aligned to a "local" coordinate system
1769    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1770    o Implement instantaneous output within pkg diagnostics:
1771      setting a negative frequency in data.diagnostics produces
1772     "snap-shot" output (as opposed to time-average if freq > 0)
1773    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1774      NOTE: change ptracer diagnostics name: use 2 characters to work with
1775            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1776    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1777      becomes the coordinate variable for the 'T' dimension
1778    o add CF-style coordinate variables to MNC
1779      - just a first cut:  numbers are meaningless on the cubesphere and
1780        missing along the T axis but otherwise it works!
1781    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1782    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1783    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1784      this is based directly on what the model compute, so that the content of
1785      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1786    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1787    o clean up build options files for SunOS, in particular
1788      - remove -traditional from xmakedepend
1789      - change -xarch=v9 to -xarch=native for f77
1790      - restore use of make (not gmake)
1791      - add CC=gcc if using g77
1792    o changes per discussion of AM, JMC, & EH3 today:
1793      - move redundant "grid" variables out of "state" -- in preparation of
1794        creating proper CF-style coordinate variables and in recognition
1795        that any/all grid variables can be easily copied (eg. w/NCO) from
1796        the grid files into any of the other NetCDF files
1797      - *always* output grid variables with MDSIO (this will eventually be
1798        changed)
1799      - output MNC grid file if useMNC is true
1800    o every instance of _END_MASTER() has been found and replaced with
1801      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1802      preprocessors
1803    o re-arrange diagnostics pkg initialisation:
1804     - allow each package to extend the available diagnostics list
1805     - add some checking and fix small problems (multi-threaded, ...)
1806     - new S/R diagnostics_fill (replace fill_diagnostics):
1807       look through the short list of active diag. (instead of the long list)
1808       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1809    
1810    checkpoint57a_post
1811    o this set of changes restores TAMC compatibility
1812      tested for global_ocean.90x40x15 adjoint on trough
1813      (what a pain)
1814    
1815    checkpoint57a_pre
1816    o some modifs in tools/build_options for sunos
1817    o call ctrl_pack for ctrl at end for optimcycle=0
1818    
1819    checkpoint57
1820    o add horizontal bi-harmonic viscosity for vertical velocity
1821      - new parameter viscA4W (defaults to viscA4)
1822      - affects only non-hydrostatic code
1823      - to be done: no-slip lateral boundary conditions
1824    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1825    o implement Implicit Vertical advection for pTracers
1826    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1827      (implemented also for implicit vertical diffusion & advection)
1828    o OBCS: extend application of tracer open boundary conditions
1829      to a strip beyond the boundary of width Olx/Oly
1830    o add call monitor to TAF set of required calls (flow directives)
1831      and include in natl_box_adjoint
1832    o untangle a few ifdefs related to cost, ctrl, autodiff
1833      untangel a few ALLOW_ECCO_OPTIMIZATION
1834    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1835      (theta2, salt2 in ecco_cost_weights)
1836    
1837    checkpoint56c_post
1838    o OBCS as control variables
1839      - update ctrl_ad_diff.list, obcs_ad_diff.list
1840      - remove balance of obcs controls from default
1841      - fix index bug nobcs in ctrl_init
1842      - fix dummy fields filen in ctrl_pack
1843      - add dummy weights for obcs
1844    o lsopt: comment out fort.94 output
1845    o optim:
1846      - remove unnecessary header files
1847      - adjusted namelists
1848      - add xerbla.F to Makefile
1849    o exf:
1850      - multiple modifications of exf_check_range
1851      - unit change in exf_init_runoff from [m/year] to [m/s]
1852    o mdsio:
1853      - i/o-vector change debugLevel from debLevA to debLevB
1854    
1855    checkpoint56b_post
1856    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1857      is called from DO_THE_MODEL_IO
1858      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1859      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1860      - clean up PTRACERS_WRITE_TIMEAVE a little
1861    o add another verification experiment that tests both the cfc-pkg and
1862      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1863      reactive tendencies treated inline with regular timestepping
1864    o testreport previously did a lousy job of comparing small numbers, so
1865      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1866      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1867      testreport.
1868    o ptracers_monitor: bug fix for MPI
1869    
1870    checkpoint56a_post
1871    o GCHEM: finish reorganizating the package
1872      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1873        (introduces another 3D-array for each passive tracer, but only if
1874        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1875        gchemTendency is not needed because the timestep is done separately)
1876      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1877      - GCHEM is now---more or less cleanly---separate from PTRACERS
1878      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1879        so clear to me how that should be done in a general way.
1880    o CFC: improve formatting of output in CFC_ATMOS
1881    o PTRACERS:
1882      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1883        that ALL experiments with ptracers enable can be checked. This makes
1884        GCHEM_MONITOR obsolete.
1885      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1886        monitorFreq
1887      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1888    o add PTRACERS (PTR0[1-5]) to testreport output
1889    o exf_check_range:
1890      * default changed to .TRUE.
1891      * will check values for niter0 if debLevA, every timestep if debLevB
1892      * STOP in exf_check_range if 'out of range'
1893      * range chosen generous to allow for potential extema
1894      TBD: a version with stricter range
1895           permitted range would be runtime parameters
1896    o GMredi:
1897      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1898      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1899      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1900    o GCHEM:
1901      - move call to GCHEM_FORCING_SEP, so that it is now called before
1902        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1903      - introduced a useGCHEM runtime flag and applied it everywhere.
1904      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1905        this flag is now only visible within GCHEM-pkg routines.
1906      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1907        be replaced by a 3D array that is computed before thermodynamics; for
1908        this, the tracer ID iTracer had to be included into the parameter list
1909        of ptracers_forcing
1910      - set up forward_step to call gchem_forcing, that will replace
1911        gchem_forcing_int in ptracers_forcing
1912      - cleaning up
1913    o small cleaning of exch2: remove files that are also in eesupp/src
1914    
1915    checkpoint56
1916    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1917    o mnc: cleanup "full" files--fixes out-of-memory problem
1918    o ECCO-GODAE
1919      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1920      * fully merged and updated from SIO code
1921        windstress sign change affects
1922        - exf_inscal_[u/v]stress
1923        - sign of xx_tau[u/v] adjustments
1924        - signs in cost_scat
1925      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1926      * natl_box_adjoint updated and compressed
1927      * 2-level checkpoint switch added
1928        (tested in EXP. 1 of natl_box_adjoint)
1929      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1930    o SVD
1931      * first complete, non-hacked version for SVD calculations
1932      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1933        performed via direct access files admtlm_vector.it????
1934        (via ctrl_[un]pack)
1935      * optimcycle is used for ARPACK iteration counter
1936        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1937      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1938        and add linear transforms where necessary
1939      * controls are initial/final SST, SSS (can be extended; need to check
1940        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1941    o mdsio: filename info to both stderr, stdout
1942    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1943      from sign change
1944    
1945    checkpoint55j_post
1946    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1947      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1948    o add consistent build directories and .cvsignore files to verification
1949    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1950    o make all subroutines 30 or less characters in length for certain older
1951      compilers to work (a thorough search only turns up two routines in
1952      pkg/ptracers)
1953    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1954      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1955    
1956    checkpoint55i_post
1957    o change arrays for total vertical diffusivity (2.D if explicit,
1958      3.D if implicit) ; each ptracer uses its own background value.
1959    o added mnc/NetCDF output capability to ocn_compon_interf
1960      - added bits to verification/cpl_aim+ocn so that it can run on
1961        ITRDA and other clusters without the mpirun "-wd" option
1962    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1963      configuration
1964    o give MNC the ability to create additional files rather than
1965      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1966      - the default is just less than 2GB which is a practical limit
1967        on many systems
1968    o Compute the non-local term using either KPP vertical diffusivity (=default)
1969       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1970    
1971    checkpoint55h_post
1972    o add verification test "vermix"
1973    o remove all the *_ioinc flags and replace with the single global
1974      outputTypesInclusive flag
1975    o allow to set a vertical profile of vertical diffusivity for T & S
1976    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1977    o useMNC moved from data.mnc to data.pkg
1978    
1979    checkpoint55g_post
1980    o Renaming carbon AD experiments to comply with testreport conventions
1981    o Updating adjoint of Held-Suarez hs94.1x64x5
1982    o Fixing directives for non-ECCO forward_step, after ECCO directives
1983      have been fixed to avoid recomp. of do_oceanic_phys
1984      Works well for global_ocean.90x40x15,
1985      but recomp. issue remains for carbon
1986    o Updating adjoint output for natl_box_adjoint after
1987      pkg/ecco has been modified (see taga c55d_post)
1988    
1989    checkpoint55f_post
1990    o rename to timeave_init_fixed
1991    
1992    checkpoint55e_post
1993    o some delicate re-shuffle of store directives to avoid one
1994      extra call of do_oceanic_physics
1995      affects ecco_the_main_loop.F, do_oceanic_physics.F
1996      checkpoint_lev1_directives.h
1997    o NB: this may break global_ocean adjoint temporarily,
1998      but it is clear how to fix it. Will do later, need this now.
1999    
2000    checkpoint55d_post
2001    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2002    o ecco_cost_weights is modified to 1x1 runs
2003    o modifs to allow observations to be read in as
2004      single file or yearly files
2005    o enable to read exf forcing fields as either
2006      single file or yearly files (flag useExfYearlyFields)
2007    checkpoint55d_pre
2008    
2009    o switch between 2-level and 3-level checkpointing
2010    o add ability of MNC to write local and "partial" (eg. 2D slices where
2011      the full 3D field is never actually stored) arrays to NetCDF files
2012      with the correct (that is, the complete multi-dimensional) set of
2013      array indicies
2014      - used in mom_vecinv() to write the diagFreq output
2015      - tested (demonstrated) in verification/aim.5l_cs
2016    o further mnc-ification
2017      - add verification/lab_sea to the list with mnc setups
2018      - fix undefined mnc v-names in cd_code
2019      - add kpp to mnc output (both snapshot and timeave)
2020    o non-hydrostatic code
2021      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2022        in calc_gw.F
2023      - defaults to viscAh
2024      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2025        friction or Leith) in non-hydrostatic mode, as long as there is
2026        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2027    o pkg/cost
2028      extend simple cost functions to treat time mean quantities
2029      (T,U,V) via cost_accumulate_state from cost_tile
2030    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2031        be 2 times larger than the minimum size the advection scheme requires.
2032        now get a perfect conservation of salt in advect_cs test-exp (updated)
2033    o GGL90 (Gaspar's TKE mixed layer)
2034      - add horizontal diffusion of TKE, requires exchanges in
2035        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2036        default. In OPA there is no horizontal diffusion of TKE but the
2037        mixing coefficients are computed from a horizontal average of TKE of
2038        6 points or so. I think that diffusion has a little more physical
2039        justification.
2040      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2041        was in vain)
2042      - mask tke-variable in ggl90_init
2043    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2044    o fix biharmonic diffusion on CS-grid.
2045    o more obcs stuff
2046      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2047        for reading boundary values. This routine is called from
2048        obcs_prescribe_read
2049      - updated obcs_check
2050      - changed sponge layer relaxation parameter units for days to seconds
2051      - turned off sponge layer by default
2052      - changed argument list of OBCS_CALC to myTime+deltaTclock
2053      - fixed about 35 bugs in obcs_external_fields_load
2054    
2055    checkpoint55c_post
2056    o obcs stuff
2057      - new runtime flags useOBCSprescribe, useOBCSbalance
2058      - re-arranged obcs_calc
2059      - moved exf_getobcs to obcs_prescibe_read
2060        obcs_prescibe_read is called after ORLANSKI stuff
2061        and independent of it (executable can contain all).
2062      - updated obcs_check
2063      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2064        These may be necessary only if tangential velocities are
2065        prescribed at OB, not sure, needs testing.
2066    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2067      which simplifies the calls and passes the ifc check-bounds test
2068    
2069    checkpoint55b_post
2070    o add a 2D scalar, Z location, exchange_2 routine.
2071    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2072      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2073      affects advect_cs results (for the wrong reason): update output.txt
2074    o use a more standard discretization for biharmonic viscosity ;
2075     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2076      affects results of dome set-up: update output.txt
2077    o fix gad_advection.F (CubedSphere part), back to version 1.23
2078    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2079    
2080    checkpoint55a_post
2081    o merged code to
2082      * prescribe/read time-dependent open boundaries
2083        (works in conjunction with exf, cal)
2084      * sponge layer code for open boundaries
2085      * each boundary N/S/E/W now has its own CPP option
2086        (healthy for the adjoint)
2087    
2088    checkpoint55
2089    o up-to-date adjoint of previous breaks
2090      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2091      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2092      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2093      - carbon: * remove tr1-related adjoint verification
2094                * add ptracer as control variable
2095    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2096      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2097    
2098    checkpoint54f_post
2099    o in verification/carbin/ remove experiment related to
2100      ALLOW_PASSIVE_TRACER (array tr1 etc)
2101      code_ad/ input_ad/ results_ad
2102    
2103    o add two new packages
2104      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2105        + subject to optimization (memory)
2106      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2107        + subject to reordering (many GOTOs in the original code)
2108        + so far opps is called for every (i,j) point, and then operates in
2109          the vertical; one may want to reorder the scheme in order operate in
2110          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2111          fields)
2112    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2113      - all verification tests compile and run with linux_ia32_g77
2114      - defaults are compatible with current input files--nothing
2115        should change if you were not previously using MNC
2116      - MNC output has been added in numerous places (eg. timeave)
2117        but there are still a few writes not yet do-able with MNC
2118        (this is in progress)
2119      - flags now allow for either/or/both use of MDSIO and MNC and
2120        documentation will soon follow
2121      - numerous small formatting cleanups for ProTeX
2122    o add version info (via BUILD_INFO.h) to MNC and stdout
2123    
2124    checkpoint54e_post
2125    o add two new packages
2126      - pp81 (Packanowski and Philander, 1981), Richardson number and
2127        stratification dependent mixing
2128      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2129      - these scheme operate in a similar manner as KPP (without ghat, of
2130        course), however there is only one diffusivity that is used for both
2131        temperature and salinity (and passive tracers)ç
2132    o add offline package
2133    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2134      provided by Stephanie Dutkiewicz
2135    o genmake2: add ability to search for C compilers and cleanup test output
2136      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2137    
2138    checkpoint54d_post
2139    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2140    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2141      leading to additional shift by 5 days each year of integration
2142       (i.e. leading to considerable offset over the years)
2143    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2144    o start with no AB and no initial filtering (staggerTimeStep):
2145      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2146    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2147      (external loading & cpl import/export stay in forward_step.F)
2148    o update coupling interface to work with new staggerTimeStep
2149    o change MDSIO ptracers_pickup.
2150    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2151    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2152    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2153    
2154    checkpoint54c_post
2155    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2156      this affects (truncation error) output.txt of test-exp:
2157       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2158    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2159    o change Qnet to always be the net heat flux, (+upward).
2160      affects (truncation error) output of natl_box exp.: updated
2161    o define the max number of passive tracers in PTRACERS_SIZE.h
2162    o start to test mnc routinely in exp0
2163    o add sea-ice loading (sIceLoad) as a new forcing field.
2164    
2165    checkpoint54b_post
2166    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2167       impressive on Altix and Opteron systems)
2168    o diagnostics can now write NetCDF files through the mnc package
2169    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2170    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2171    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2172      affects (truncation error) output of lab_sea & natl_box exp.: updated
2173    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2174    
2175    checkpoint54a_post
2176    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2177    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2178    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2179    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2180      + internal_wave (shift in writing cg2d_ini_res)
2181    checkpoint54a_pre
2182    
2183    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2184      - modified verification/lab_sea and natl_box_adjoint accordingly
2185    
2186    checkpoint54
2187    checkpoint53g_post
2188    o prepare splitting of thermodynamics: store convect.counter in common block
2189    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2190      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2191    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2192    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2193    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2194    o restore adjointability
2195    
2196    checkpoint53f_post
2197    o modifications that affect AIM experiment results (update output.txt):
2198      - no advection of S at top interface Nr (pkg/generic_advdiff)
2199      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2200    o AIM pkg:
2201      - include stability function into surf.Flux derivative relative to Tsurf
2202      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2203    
2204    checkpoint53e_post
2205    o merged cylindrical coord configuration
2206    o added rotating_tank experiment
2207    checkpoint53e_pre
2208    
2209    checkpoint53d_post
2210    o faulks upgraded: re-generate output.txt that have changed:
2211       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2212    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2213    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2214    o added Sadourny discretization of Coriolis
2215      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2216      - re-enabled use of omega3 (useAbsVorticity)
2217    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2218      vector-invariant equations
2219      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2220    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2221      hopefully without new bugs
2222      - still to do: biharmonic friction for non-hydrostatic w
2223    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2224    o regenerated output for global_ocean_ebm (using -ieee)
2225    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2226      of mom_common/
2227      - simple re-arrangement of instructions within computing loop
2228    checkpoint53d_pre
2229    
2230    checkpoint53c_post
2231    o new version of coupler for AIM+thSIce and Ocean models
2232     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2233     - land: change Evaporation of snow
2234     - aim with thSIce: fix bug in snow-precip.
2235    o changes to calc_gw.F
2236     - bug fix for w^2 term near the bottom boundary
2237     - (hopefully) improve the lateral slip boundary condtions for use with
2238        partial/looped cells
2239      - because the bug fix changes two verification experiments anyway (exp5
2240        and plume on slope), change the lateral boundary condition from half slip
2241        to the value of no_slip_sides
2242    o ebm package wasnt quite up to the parallel task. Fixed that.
2243    o Adjoint of EBM package + verification
2244      * TLM OK
2245      * ADM not sufficient accuracy yet (needs further testing)
2246    
2247    checkpoint53b_post
2248    o Commiting new energy balance model to repository
2249      * package is pkg/ebm
2250      * verif. is verification/global_ocean_ebm
2251      * references are in ebm_driver.F
2252    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2253    C        Global thermohaline circulation. Part I:
2254    C        Sensitivity to atmospheric moisture transport.
2255    C        J. Climate 12(1), 71-82
2256    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2257    C        Global thermohaline circulation. Part II:
2258    C        Sensitivity with interactive transport.
2259    C        J. Climate 12(1), 83-91
2260    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2261    C        Destabilization of the thermohaline circulation
2262    C        by atmospheric eddy transports.
2263    C        J. Climate 7(12), 1870-1882
2264    o Will need long integration testing.
2265    checkpoint53b_pre
2266    
2267    o created pkg/mom_common in preparation for variable viscosity code
2268    o renamed and split ini_mnc_io
2269    o pkg/land: only liquid water can diffuse or run-off
2270    o AIM using land: soil wetness availability account for snow
2271    o added printMapIncludesZeros to EEPARMS namelist
2272    
2273    checkpoint53a_post
2274    o restore TAMC compatiility for exf_constants.h
2275      (no usage of _d in .h)
2276    o Additional storing in KPP in an attempt to fix
2277      TAMC problem with adjoint of KPP code.
2278      (no success...)
2279      Identical code works fine with TAF.
2280    o Fixed verification/natl_box_adjoint experiments.
2281      Initial conditions for Experiments 4 and 5 are now
2282      set to "SEAICE_initialHEFF=0", which is more reasonable,
2283      and hence gives results closer to that of Experiment 2.
2284      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2285    
2286    checkpoint53
2287    o stable checkpoint with up to date adjoint
2288      TLM tests only run for 1st grdchk at the moment. Its unclear if
2289      this is a code problem or a problem with resetting code for g_
2290      variables that is being autogenerated wrong.
2291      Otherwise:
2292       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2293       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2294         are both still in chaos following their security messes.
2295    
2296    checkpoint52n_post
2297    o various build (mostly genmake2) changes including:
2298      - ability to build/run more easily within Cygwin and MacOS X
2299      - more complicated Makefiles with a stronger dependence on Gnu Make
2300    o pkg/seaice modifications
2301      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2302        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2303        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2304      - changed proxy for geostrophic velocity and updated
2305        verification/lab_sea/results/* accordingly
2306      - removed ADI dynamic solver from pkg/seaice
2307      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2308        they caused a segmentation fault under certain circumstances
2309      - removed unused field WATR
2310    o bug fix in exf-package:
2311      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2312         now reflect that.
2313    o small fixes in the cal-package:
2314      - set reference date to first of January for the 'model'-calendar
2315      - failing of cal_CheckDate in cal_FullDate now actually results in a
2316        warning
2317    o small modifications in exf-package to increase flexibility:
2318      - change climtempfreeze from a constant to a runtime parameter that
2319        is specified in data.exf_clim (default = -1.9)
2320      - introduce runtime parameter windstressmax (default = 2.0) that is
2321        specified in data.exf
2322    o fix in pkg/thsice:
2323      - update Evap (Tsf changes) to be consistent with Latent heat flux
2324      - maintain snow precipitation unchanged (even if Tsf >=0).
2325     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2326    
2327    checkpoint52m_post
2328    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2329      this does not change any of the results, because myIter=0 in swfrac always
2330      lead to jwtype=2 (the default anyway), but the call makes little sense
2331      as a default
2332    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2333    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2334      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2335    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2336    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2337    o extending useSingleCpuIO option to work with new exch2 I/O format
2338      - old-style, missing-tile I/O is still accessible by defining CPP
2339        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2340    o monitor package can write to NetCDF files and/or STDOUT
2341    o fix re-definition bug in MNC_GRID_INIT_ALL()
2342    o doc/api_reference added
2343      - a framework for building an API Reference Manual using all
2344        the "protex" comments embedded in the code
2345      - see pkg/generic_advdiff, pkg/mnc for examples
2346    o MNC:
2347      - make myThid the last argument for all subroutines
2348      - new default for the grid files: NO halos
2349      - add useMNC and other run-time flags
2350      - separate per-file-group handling of the unlimited dimension
2351      - early initialization of MNC w/ flags read at the eeboot stage
2352        and lookup tables set in initialize_fixed
2353      - write all MNC output to a freshly-created directory
2354    o thermodynamics sea-ice (thsice) is now tested with testreport.
2355    o test exp. advect_cs: use the standard cs32 grid ; update output.
2356    o Added functionality to grdchk:
2357      pick global i,j,k position (or nearest wet) where to perform check.
2358    
2359    checkpoint52l_post
2360    o new land formulation:
2361      a) use ground enthalpy as prognostic variable to ensure exact
2362         energy conservation.
2363      b) account for water temperature and for latent heat of freezing
2364         in all processes (rain, run-off, ground storage)
2365      c) compute surface and ground temperature implicitly.
2366    o aim_v23 modification for new land model:
2367      a) Treat separately land / ocean / sea-ice surface fluxes
2368         to allow implicit computation of land & sea-ice surface temp.
2369      b) add snow precipitation.
2370    checkpoint52l_pre
2371    
2372    o fix problem (when 1 tile is empty) in min/max monitor.
2373    o fix bug in timeAve (u,vZetatave in common block)
2374    o no restoring terms under ice for pkg/seaice
2375    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2376    o bug fix for pkg/seaice pickups
2377    o change MNC call locations and add coordinate attributes
2378    o mask vorticity at the corner ; affects global_ocean.cs output
2379    o fix ini_curvilinear_grid ; test CS experiments with mpi
2380    o aim.5l_cs: modify sea-ice fraction input file ; update output
2381    o exf: Adding simple range check routine for exf fields after read
2382    
2383    checkpoint52k_post
2384    o removed top-level directory "diags"
2385      - we migrated these functions to pkg/timeave a long time ago
2386    o fixed bug introduced in pkg/monitor
2387    o accuracy ctrlprec = 32 insuffient for gradient checks using
2388      averaged fields (I/O via cost_averages)
2389      -> use ctrl.h in active_file*.F to control I/O precision.
2390    o paramter list of CALL ADTHE_MAIN_LOOP
2391    o added initial do_the_model_io to ecco
2392    o set all ...Freq to zero after cost_final
2393      taveFreq, dumpFreq, pChkptFreq
2394    o MAIN and ECCO differentiability restored
2395    
2396    checkpoint52j_post
2397    o fix nchklev in tamc.h for global_ocean...
2398    o Bringing flow and store directives up-to-date
2399    o Really weird thing!
2400      call do_the_model_io from the_main_loop with parameters
2401      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2402      TAF places a faulty re-call of initialise_varia
2403      after cost_final call which should not be there!
2404    checkpoint52j_pre
2405    
2406    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2407      error messages
2408    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2409    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2410      debug output
2411    o modfied mdsio_writefield.F to handle non-global files under exch2
2412    o update AIM Cubed-Sphere exp (aim.5l_cs):
2413      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2414    o update AIM Equatorial Channel exp:
2415      use standard aim_v23 pkg and change the SST fields to be more realistic.
2416    o globalFile now works with exch2
2417    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2418      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2419    o limit timeave output for hi-res integrations
2420    
2421    checkpoint52i_post
2422    o removed CPP_EEOPTIONS.h from verification/*/code
2423    o updated the tiling for global_ocean_pressure
2424    checkpoint52i_pre
2425    
2426    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2427      the old pkg/aim).
2428    
2429    checkpoint52h_pre
2430    o shortened offending lines in exch2_send_rx?.template
2431    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2432  o genmake2: add build & execute test for NetCDF code  o genmake2: add build & execute test for NetCDF code
2433  o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed  o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2434    old grid files, moved CPP_EEMACROS.h to pkg/exch2    old grid files, moved CPP_EEMACROS.h to pkg/exch2

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