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revision 1.76 by jmc, Fri Jul 12 14:52:08 2002 UTC revision 1.986 by jmc, Mon May 5 23:16:00 2008 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
8       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
9    o Refresh tutorial_global_oce_biogeo, notably:
10      - change bathymetry (put back seamounts in ACC, use hFacs)
11      - change EOS (POLY3 --> JMD95Z)
12      - use Bryan-Lewis vertical diffusivity
13      - use multidimensional advection
14      - remove old virtual virtual in dic pkg, now done through ptracer pkg
15      - change a couple of parameters in dic pkg
16    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
17    o pkg/obcs: change default to OBCSfixTopo = .true.,
18      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
19      - replace "debugMode" with "debugLevel .GE. debLevB"
20    o implementation of TAF directives for gchem,cfc,dic
21    o remove "exp5" (replaced by tutorial_deep_convection).
22    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
23      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
24      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
25      --> changes results in exp4, seaice_obcs
26    o tutorial_deep_convection :
27      update the set-up and increase resolution and domain size ; start
28      from pseudo initial conditions = output at t=120mn in order to see
29      something happening when running testreport.
30    o pkg/seaice: add os7mp as an advection scheme
31                  add check for advection schemes
32                  add a flag for restoring T and S underneath sea ice
33    o pkg/my82: add netcdf-support and diagnostics
34    o thsice pkg:
35      - Now hsMax limits snow height by turning it into ice following
36        flooding scheme (and now conserving energy)
37      - Slight rewriting of the formula in thsice_calc_thick.F
38      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
39      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
40    
41    checkpoint59p
42    o gchem / dic / cfc :
43      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
44      - add new parameter files: "data.dic" & "data.cfc" ;
45      - various re-arrangement in initialisation & header file ;
46      - fix tutorial_global_oce_biogeo for multi-threaded test.
47    o pkg/dic: test for "pickup_dic" file when restarting ;
48      if no pickup-file, can restart with a re-initialised pH (same as it did
49      before) providing pickupStrictlyMatch is set to False.
50    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
51      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
52    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
53      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
54    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
55     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
56       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
57    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
58       scheme to use for vorticty-term ;
59     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
60       (with default selectVortScheme, return to original discretisation)
61     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
62    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
63    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
64      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
65      also fix diagnostics VISCAHW & VISCA4W.
66    
67    checkpoint59o
68    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
69    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
70      move a few statemens out the main loop into separate loops
71    o pkg/shelfice:
72      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
73        (kg/m^2/s), does not break tests, because in verification/isomip,
74        rhoConstFresh=rhoConst (by accident)
75      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
76      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
77        new file model/src/seawater.F, so that they are available for all pkgs.
78      - convert potential temperature into in-situ temperature. This changes the
79        isomip tests => update tests
80    o add a flag writePickupAtEnd (default=true) to be able to suppress
81      writing a pickup at the last timestep
82    o tools/mpack-1.6 :
83      - disable automake (not working) and autoconf (not needed).
84      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
85        also cleaner with much less compilation warnings.
86    o pkg/profiles:
87      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
88      (for "less than 32 characters name" compiler requirement)
89    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
90      conditions that have a different sampling frequency than S/T/U/V obcs
91    o pkg/diagnostics (stats-diags):
92      - fix global Min/Max in case 1 processor get only empty tiles
93    o genmake2: replace (4 times)
94         make genmake_tc_1.o >> genmake_warnings 2>&1
95      with
96         COMM="$CC $CFLAGS -c genmake_tc_1.c"
97         echo $COMM >> genmake_warnings
98         $COMM >> genmake_warnings 2>&1
99      to make genmake2 always see the value of CC as specified in the optfile.
100    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
101      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
102      - modify verification advect_cs test to test SOM-advection on CS-grid.
103    o pkg/ctrl:
104      - Rewrite of ctrl_map_ini_ecco.F,
105        introducing a generic routine (ctrl_map_ini_gen.F).
106      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
107    
108    checkpoint59n
109    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
110      number in dedicate array "hdiag":
111      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
112        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
113      - many small changes (integer format) for large number of diagnostics
114      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
115        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
116    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
117      usingSphericalGrid, this allows to define the rotated grid coordinates
118      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
119      geographical coordinates according to the inverse of the rotation defined
120      by the Euler angles, so that Coriolis parameter and online-interpolation by
121      exf works with the geographical coordinates on XC/YC/XG/YG.
122      Naturally, this feature does not work with all packages, so some
123      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
124      profiles), because there the coordinates are assumed to be regular
125      spherical grid coordinates.
126    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
127      - introduce isopycnal diffusion coefficient control.
128    o tools/adjoint_options:
129      - additional control vector components.
130    o pkg/mnc: have mnc create marginally meaning full coordinate variables
131      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
132    o pkg/mypackage:
133      - add example of read/write pickup for state-var ;
134      - add entry points to the main code for state-vars diags & write-pickup.
135    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
136      transitions for useExfYearlyFields
137      - add new subroutine that determines the file to read from for
138        use*YearlyFields = .TRUE. and .FALSE.
139      - add a verification experiment to global_with_exf that tests
140        useExfYearlyFields with USE_EXF_INTERPOLATION defined
141    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
142      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
143      subroutines (which could be generated from a template, because they are
144      almost identical), for now they are included in obcs_prescribe_read.F for
145      simplicity
146    o pkg/exf:
147      - add a little more diagnostic to exf_interp_read (in analogy to
148        mds_read_field, can be turned off with debugLevel < debugLevA=1)
149      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
150        ugly but fast by unrolling short inner loops, inserting a unroll=8
151        directive in routine lagran, and splitting a loop and making do while the
152        outermost loop (the latter requires the intoduction of index arrays)
153    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
154    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
155      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
156    o verification/seaice_obcs: updated for restart test and latest options
157    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
158      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
159      for now this is only available for the C-grid code and also within
160      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
161    
162    checkpoint59m
163    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
164      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
165    o gad_som : fix flux output (& diagnostics) to have same units as other  
166      advection scheme fluxes (was previously multiplied by deltaT).  
167    o added verification/seaice_obcs both to test seaice open boundaries
168      and to provide an example matlab scrpt for generating them
169    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
170    o pkg/salt_plume: clean up salt_plume_frac.F to
171      remove redundancy in PlumeMethod 1 and 4
172    o pkg/kpp: added saltplume diagnostics
173    o pkg/obcs and pkg/seaice:
174      - do not set uice and vice to zero when OB*icefile are unspecified
175      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
176      - moved seaice tracer obcs after call to seaice_growth
177    o pkg/salt_plume: added various options for salt plume depth
178      criterion and for vertical distribution of the salt
179    
180    checkpoint59l
181    o pkg/ptracers: new version of ptracers pickup:
182      read meta file and write only fields which are needed to restart.
183      ( same logic as main pickup file ; also using pickupStrictlyMatch )
184    o pkg/seaice:
185      - add timescale for melting due to warm mixed layer as a means of
186        setting SEAICE_availHeatFrac more conveniently
187      - add a CPP-flag/runtime parameter check for flooding algorithm
188      - reformulated availHeat in seaice_growth.F to be independent of AREA
189    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
190      unit changes
191    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
192    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
193      SX vector computer.
194    o pkg/seaice:
195      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
196        seaice forcing fields can now be read only through pkg/exf
197      - removed some unused halos
198    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
199    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
200      or U/VICE from U/VWIND before computing U/VSTRESS
201    
202    checkpoint59k
203    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
204      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
205    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
206      all experiments pass when compile with un-initialised var. checking option.
207    o added pkg/salt_plume
208    o script to test restart (for now, in MITgcm_contrib/jmc_script)
209    o pkg/seaice: new read/write pickup version.
210      read meta file and write only fields which are needed to restart.
211      ( same logic as main pickup file ; also using pickupStrictlyMatch )
212    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
213    o lab_sea.hb87: modify the domain & update output.hb87.txt :
214      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
215      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
216      process. Fixed here by closing the domain at the Northern boundary.
217    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
218    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
219      a set of consecutive levels in/from a 3-D array.
220    o pkg/ptracers:
221      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
222      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
223    
224    checkpoint59j
225    o in pkgs: dic, obcs, offline, rbcs:
226      standard way to compute coeff. for time interpolation between 2 time reccords
227      which retains full precision (& make results less dependent on compiler).
228      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
229    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
230      packages instead of reading ice cover and wind speed separately
231    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
232     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
233      to allow to compile customized code before the update)
234    o cleaning-up:
235      - fix CPP instruction syntax in pkg/obcs
236      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
237        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
238      - fix some threads issue in IO parts.
239    o pkg/dic:
240      - add tons of "_d 0" (--> much better testreports !)
241       and then update outputs of tutorial_global_oce_biogeo
242    o pkg/mom_fluxform:
243      add a special version of momentum advection intended to conserve momentum
244      next to a bathymetry step or a coastline edge. (default = off = #undef)
245    o new read/write pickup version:
246      - for now, only implemented for main (mdsio) pickup file.
247      - write out only what is needed to restart; merge pickup_nh , pickup_ph
248        and main pickup together.
249      - read meta file; read only what is needed to restart; stop if a field
250        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
251        if it make sense (even if the restart is not perfect).
252      - if no meta file, assume that pickup to read corresponds exactly to
253        a pickup that would currently be written.
254      - read pickup written in the old format (until checkpoint59i) if it
255        recognizes an old meta file (no field-list).
256      - add a meta file in exp. which starts from a pickup: 2 cases:
257        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
258         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
259        b) a meta file describing the content of the associated pickup file
260         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
261    o pkg/mdsio & pkg/rw:
262      - new routine to read a meta file ; new set of routine to read
263        Multiple-fields file (with meta file).
264    o added open boundary conditions capability for seaice
265        HSNOW, HSALT, UICE, and VICE
266    
267    checkpoint59i
268    o adjoint:
269      * fix multiDimAdvection adjoint
270        (partial recomputation problem by TAF for fVerT(:,:,kDown)
271        and comlev1 size definition (maxpass vs. max. number of tracers)
272      * verification/global_ocean.90x45x15 adjoint now tests
273        NLFS and multiDimAdvection using DST3 (=30)
274      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
275    o pkg/kpp: add "_d 0" to real constant (if missing);
276      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
277      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
278    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
279      for internal parameters related to restart process (formerly from PARAMS.h)
280      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
281    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
282      as argument. (only atm2d & obcs write_pickup have not yet been updated)
283    o pkg/monitor:
284      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
285      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
286      - account for deep Atmosphere factor and density factor (anelastic)
287    o added open boundary conditions capability for seaice HEFF and AREA
288    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
289      thermodynamics
290      - requires a little reorganization, which affects the testreport results
291        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
292        so that now the conservative form is tested
293      - add a few comments
294    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
295    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
296    o add new diagnostics to seaice: advective, diffusive fluxes (only for
297      multidim-advection, for scheme 2 they are not filled) and transports,
298      thermodynamic growth rates
299    o change units of EmPmR (inside the code, + within coupling interface)
300      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
301      Affects results @ truncation level (cg2d match) and update output of
302       experiments: lab_sea(6), global_ocean.90x40x15(10),
303      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
304      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
305      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
306      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
307    
308    checkpoint59h
309    o pkg/exf:
310      - improve vectorization by moving if-statement out of loops in
311        exf_mapfields, exf_radiation
312      - exf_bulkformulae.F: introduce 2D fields and vectorize code
313    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
314    o testreport:
315      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
316        monitor & update offline_exf_seaice exp. output.
317      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
318    o pkg/seaice:
319      - bug fix in the evp solver: boundary conditions were affected be
320        masking of zMax/zMin (changes results)
321      - minor bug fix in boundary conditions in seaice_calc_strainrates
322        (changes results for no_slip)
323      - seaice_lsr.F: make interpolation of eta dependent on boundaries
324      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
325      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
326        stress formulation and no-slip boundary conditions
327    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
328      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
329    o pkg/seaice: a first HSALT time stepping equation has been checked in
330    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
331      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
332      without requiring DO-IF statements
333    o pkg/thsice:
334      use continuous power-law function for partition of energy between lateral
335      melting/freezing and thinning/thickening ; old code using step function
336      still available with #undef THSICE_FRACEN_POWERLAW
337      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
338    o testreport: change AD testing : check against results/output_adm.txt
339      using same scripts as for forward test.
340    
341    checkpoint59g
342    o adjoint testing: in preparation for changing testreport:
343      - output format: cost and grad written on separated lines
344      - ad output results in directory "results" (instead of "results_ad")
345    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
346    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
347    o pkg/ecco: allow user defined cost function contributions
348    o testreport:
349      Allow to choose (per experiment) the list of tested output variables
350       and the main variable (used to issue a pass/FAIL ) ;
351      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
352      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
353      Also modify printing of summary:
354       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
355       b) echo the list of tested variables in the individual summary.txt of
356          each experiment.
357    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
358      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
359      (but still depend on the tile decompostion of the domain).
360    o pkg/seaice: change a discretization detail to make the B-grid code
361      "more symmetric". This change is likely to remove all "ridges/leads" that
362      where quasi-aligned with the grid in B-grid solutions. It may also be
363      the solution to the stress coupling issues with the B-grid.
364    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
365      remove .cvsignore from input dir. (since testreport no longer run here).
366    o pkg/thsice:
367     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
368     - fix reshaping of sea-ice just after advection:
369       melt all the ice only if ice-volume is too small.
370     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
371       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
372     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
373    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
374      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
375    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
376      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
377      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
378      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
379      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
380      -> update output.txt
381    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
382     this affects truncation error: -> update output.txt of exp:
383      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
384      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
385    
386    checkpoint59f
387    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
388    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
389      a bounded range (in forward mode)
390    o pkg/ecco, ctrl, autodiff and mom_common:
391     internal parameter controls, completements of implementations
392    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
393    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
394      (not seem any difference in testing results).
395    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
396       at face corners.
397    o pkg/generic_advdiff:
398     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
399      loop range indices for computing vertical advection tendency
400      and do the calculation in the interior only (no overlap) ;
401      for now, only implemented for SOM advection (to save CPU time).
402     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
403    o exch2 adjoint
404      First set of changes:
405      - add exch2 hand-written adjoint templates
406      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
407        This will require cleanup in pkg/autodiff/*.F
408        (changed routines currently kept separate in verif. code/)
409      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
410        that used to hide exch2 or cubed-sphere specific code
411        (commented via 'cph-exch2')
412    o pkg/seaice
413      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
414    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
415       output of global_ocean.cs32x15.thsice .
416    
417    checkpoint59e
418    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
419      for B-grid vector (not yet tested) and C-grid vector (<- only used
420      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
421    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
422      (#ifdef ALLOW_SALT_PLUME)
423    o gather_2d/scatter_2d: removed halo regions
424    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
425      scheme and the corresponding test case (under front_relax dir). For now,
426      only available with Skew-flux form and not yet tested in realistic set-up.
427      adjoint: store directives updated, but gradient checks deteriorated,
428      so maybe GM/Redi adjoint is now broken.
429    o seaice adjoint
430      * add AREA, HEFF, HSNOW as control variable
431        (should not change lab_sea results)
432      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
433    o pkg/seaice:
434      * added computation of saltFlux in seaice_growth;
435        For time being, sea ice salinity is assumed constant
436        contribution of snow flooding to freshening of sea ice is neglected.
437        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
438        defaults to 0.0 in order to maintain backward compatibility.
439        Typical values for SEAICE_salinity are 4 to 10 g/kg.
440      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
441      * added SEAICE_availHeatFrac, which specifies fraction of surface level
442        heat content used to melt or grow ice
443      * commented out cap of HICE: it helps keep ice thinner
444      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
445      * applied OBCS T/S mask to HEFFM sea ice mask
446    
447    checkpoint59d
448    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
449     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
450     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
451    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
452     and change default value of parameter "GM_Small_Number";
453     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
454       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
455       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
456    o pkg/ecco: cost function when applying pkg/smooth to controls
457    o pkg/ctrl: add forcingPrecond run time parameter
458    o pkg/seaice:
459     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
460     - fix bug in metric terms of u-equation in LSR solver (implicit part),
461       changes verification/lab_sea
462     - rearrange implicit part of u-equation in LSR solver to make it easier to
463       read, understand, and debug. This causes changes at the truncation level.
464     - fix (serious) bug in the boundary conditions (sign error in the implicit
465       part) of the LSR solver. Changes all LSR results.
466     - fixed problem with HSNOW initialization to avoid thick snow when AREA
467       is initilized with small values - does not change lab_sea results.
468     - added HsnowFile initialization capability
469    o pkg/smooth: addition to model/src and pkg/ctrl so allow
470     initialization of pkg/smooth and application to control vector
471    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
472    o dependencies: pkg/profiles requires pkg/cal
473    o pkg/profiles:
474     - added option ALLOW_PROFILES_GENERICGRID
475         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
476         that interpolation information (grid points and coefficients) is provided
477         within the netcdf input files.
478         -> sample matlab scripts can be found in MITgcm_contrib/gael
479         that allow you to prepare netcdf input files.
480     - also modified: cleaner include statements, cleaner error print statements,
481       cleaner stops when error, and more tests of the netcdf input files consistency.
482    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
483    o pkg/seaice:
484     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
485       requires a new routine: seaice_diagnostics_fill.F
486     - make sure that seaice does not move if not forced (pressure replacement
487       method, Hibler and Ip, 1995), changes results
488     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
489     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
490       It is turned off by default (=-1.), because it changes the results.
491     - make it possible to read AREA from a file, too.
492    
493    checkpoint59c
494    o add S/R and diagnostics for oceanic mixed-layer depth
495    o move GMRedi call after all vertical mixing schemes (including KPP)
496    o pkg/thsice:
497     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
498      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
499    o pkg/obcs:
500     - bug fix for balance code
501    o pkg/seaice:
502      - allow values of SEAICE_elasticParm > 1
503      - add new parameter SEAICE_evpTauRelax as an alternative
504        to SEAICE_elasticParm
505      - make lsr boundary conditions free slip (by default), changes result
506      - add code for no slip boundary conditions for lsr
507      - set minimum of zeta to zero (and not 4e8) (changes results)
508      - add a cap on AREA after advecting AREA if seaice_growth is not called
509    o change calculation of Visbeck K:
510      - no longer depend on tapering scheme; instead, compute slope (limited
511        by GM_maxSlope). this is equivalent to what was comuted before with
512        clipping or linear tappering.
513      - fix vertical averaging (wrong by 1/2 level)
514      - leave the old version (but will not be maintained) within
515        #ifdef OLD_VISBECK_CALC / #endif
516      - update output of exp. ideal_2D_oce
517    o change error catch in calc_r_star to improve vectorization
518    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
519      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
520    o adjoint:
521      Re-organized adjoint checkpointing according to Matt Mazloff
522      (but with modifs/completions/cleanups)
523      Storing is now bundled into large arrays to optimized I/O
524      (and second step in cleanup of the_main_loop)
525    
526    checkpoint59b
527    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
528      - export/import (between ocean & coupler) fields needed for ocean DIC.
529    o pkg/seaice:
530      - get rid of three more exchanges seaice_calc_viscosities (required
531        different loop boundaries in seaice_lsr and seaice_ocean_stress)
532      - bug fix in seaice_ocean_stress (update of lab_sea required)
533      - reduce loop boundaries to necessary minimum also in seaice_evp
534      - go back to the old way of computing deltaC/Z as the adjoint likes that
535        better
536    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
537      passive tracer to an Age Tracer) + update output.txt
538    o pkg/exf:
539      - implement A-grid / C-grid selection for wind-stress input files.
540      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
541      for now, in exf_bulk_largeyeager04.F only :
542      - change implementation for case where windspeed + 2. components wind-stress
543        are read-in. AND use rhoConstFresh to convert evap.
544    o pkg/seaice:
545      - use correct EXCH_UV for wind-forcing (on A-grid).
546      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
547        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
548    o pkg/exf:
549      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
550      EXF_INTERPOLATION:
551      - merge global_with_exf/code version of exf_interp_read.F
552        to the main code ;
553      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
554        reading the file ; Important: This options needs to be defined to recover
555        previous code.
556        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
557      - no longer loose real*8 precision along the way when using exf_iprec=64.
558    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
559      - change discretisation of evp-solver in order to avoid another exchange
560        (changes lab_sea) and clean up a little
561      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
562        help the adjoint (this also changes the results slightly)
563      - add a few "_d 0" where they had been missing in seaice_evp.F
564      - cleaning up: remove unused seaice_calc_rhs.F
565    o pkg/exf: some cleaning-up:
566      - change various "constants" into runtime parameters
567      - cleaned-up Large&Yeager04 routine which should eventually
568        replace exf_bulkformulae.F (changed names of S/R and CPP)
569        and merged various ALLOW_ATM_WIND options
570     only used with thsice pkg (in thsice_get_exf.F):
571      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
572        which are used when useStabilityFct_overIce=TRUE (= the default)
573      - change default values of ice & snow emissivity and scale downward LW
574        by ice & snow emissivity.
575    o pkg/thsice:
576     fix few little problems, in thsice_calc_thickn.F:
577      - growth vertically (and not laterally) if iceFrac == iceMaskMax
578      - melt only laterally if hIce < hThinIce (as the comments say)
579      and in thsice_extend.F:
580      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
581      - start to form ice as soon as the minimum ice-volume is reachable.
582     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
583      and cpl_aim+ocn
584    o pkg/kpp
585     - move computation of surface related input fields to KPP into a new
586       subroutine kpp_forcing_surf.F
587     - remove wrong (within bi,bj loops) EXCH calls.
588     - little cleaning (add argument myThid in last position, cvs header ...)
589     - for now, fix conservation problem by exchanging KPPviscAz (may not
590       be the best fix)
591    o pkg/seaice
592     - check for inconsistent evp parameter/cpp-flag combination
593     - remove leftover errIO flat for obsolete name list error handling
594    o OpenAD
595     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
596    
597    checkpoint59a
598    o pkg/seaice: some parameter clarifications and a little bit of clean up
599    o pkg/thsice: rename run-time parameters:
600       himin       -> hIceMin
601       himin0      -> hThinIce
602       hihig       -> hThickIce
603       i0          -> i0swFrac
604       transCoef   -> bMeltCoef
605       frac_energy -> fracMelting
606      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
607       with default values (for now) that do not change the results.
608      remove old version of thsice vars advection in pkg/seaice.
609    o in FFIELDS.h:
610      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
611      - make pLoad & sIceLoad always available (but still only used if
612         ATMOSPHERIC_LOADING is #define).
613    o pkg/kpp: replaced _KPP_RL with _RL
614    o bug fixes for vertical diffusivity computations when both KPP and
615        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
616        are no longer updating the vertical diffusivity array
617        (passed as argument) but are (re-) setting those arrays.
618    o pkg/seaice: fix bug in evp solver, while doing that
619      - change (improve?) discretization of stress computations for both
620        cgrid-lsr and evp solver
621      - add a new routine to compute strain rates
622      - the above changes lab_sea results
623      - add no slip conditions for evp solver (off by default), lsr-version
624        may follow
625      - fix exchange for shear at Z-points (does not change lab_sea)
626      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
627        (to force the user to pick a time step since there is not "safe" way
628        of choosing it)
629      - add principal stress diagnostics
630      - rearrange fields for evp a little to avoid having to call a: too many
631        exchanges and b: exchanges for stress trensor components which we do
632        not have.
633      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
634        of evp, complete rewrite for lsr case (latter is does not yet work
635        in all cases)
636    o pkg/kpp: add code to have mixing in shelf ice caverns
637      - add myThid to all kpp routines (long overdue)
638    
639    checkpoint59
640    o pkg/exf:
641      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
642        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
643      - move exf header files from lower_case.h to UPPER_CASE.h ;
644        add missing cvs Header & Name
645      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
646      - add namelist param. selectStressGridPosition, exf_monFreq
647      - retire many _CLIM routines, and remove data.exf_clim
648        + params moved to data.exf
649        + climsst, climsss now handled by exf_set_gen, i.e.
650          climss?period=0 refers to constant field,
651          climss?period=-12 to monthly forcing
652      - split up namelists in data.exf
653    o pkg/seaice:
654      - remove seaice_exch and seaice_exch_uv
655      - remove superfluous exchange of theta
656      - add myThid to seaice_budget_ocean/ice
657      - add new interface for atmospheric wind forcing (C-grid only)
658        + new routine
659        + two new field (taux, tauy for stress over ice)
660        + removed one global field (DAIRN) for C-grid case only
661    o pkg/thsise
662      - 2nd set of modifs for thsice adjoint in conjunction with exf
663    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
664    
665    checkpoint58y_post
666    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
667      vertical diffusivity, similar to that in MOM4; turned on using
668      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
669      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
670    o Added capability for 3D specification of background vertical diffusion
671      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
672      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
673      "data" file that contains the 3D vertical diffusivity coefficients.
674    o ice dynamics (pkg/seaice) with thsice thermodynamics:
675      - add code within pkg thsice to advect & diffuse sea-ice fields
676      similar to (and will replace) what has been added in  seaice_advdiff.F,
677      but: - conserving Mass, Heat & Salt.
678           - better when using non-linear advection scheme (not yet fully tested)
679           - can also be used in atmospheric set-up (for now, only the diffusion).
680    
681    checkpoint58x_post
682    o IO option for global-file compact format:
683      - add options when generating topology (utils/exch2/matlab-topology-generator)
684      - add I/O capability (pkg/mdsio).
685      - adapt utils/matlab/rdmds.m to read this format.
686      for now long-line format not yet supported by pkg/mdsio (& exch2).
687    o shelfice: add a few diagnostics
688    
689    checkpoint58w_post
690    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
691      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
692      (and replace horiVertRatio in NH code).
693      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
694                         and tutorial_plume_on_slope (sensitive to truncation)
695    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
696      directly to drive seaice model (C-grid only)
697    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
698     - reintroduce computation of wind from stress,
699     - compute tau (in exf_bulkformulae.F) from windstress averaged to
700       mass points to avoid tau = 0
701     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
702    o rdmnc.m: make it work with "global" files created with gluemnc
703    o rdmnc.m : some improvements in dealing with singleton dimension
704      (tested on all testreport mnc output files).
705    o genmake2: disable pkg/profiles if netcdf test fails.
706    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
707    o move call to cal_readparms up to make calendar parameters/variable available
708      to all packages
709    
710    checkpoint58v_post
711    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
712      useDynP_inEos_Zc tested.
713    o pkg/exf: changes to properly interpolate/mask/scale initial fields
714    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
715      and portions thereof.  See read_cs.txt for description and examples.
716    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
717      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
718      following the great-circle arc between those 2 points.
719    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
720      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
721    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
722     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
723     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
724     - still needs work (not working with some options ; efficiency to improve)
725       and serious testing.
726     - use this scheme for temperature & salinity in 2 advection test exp.:
727       advect_xy & advect_xz, respectively.
728    
729    checkpoint58u_post
730    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
731    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
732    o testreport: add option "-skipdir" to skip some test.
733    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
734      momentum calculation.
735    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
736    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
737      remove checkpoint.F and the_correction_step.F (no longer used);
738      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
739    o add option (linFSConserveTr) to correct for tracer source/sink due to
740      Linear Free surface
741    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
742    o pkg/thsice: fix reading mnc-pickups
743    
744    checkpoint58t_post
745    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
746    o pkg/mdsio:
747     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
748       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
749       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
750     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
751     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
752       either MDS_READ_FIELD or MDS_WRITE_FIELD )
753     - new S/R (to replace MDSWRITEMETA), which allows to write more
754       informations (variable names, time ...) to meta files.
755     - modify rdmds.m to give back the meta file content.
756    o pkg/diagnostics: change vertical interpolation to be safer, and more
757       flexible (define p-levels to interpolate to in data.diagnostics);
758      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
759       diagnostic pointer.
760    o pkg/seaice: more cleaning up of seaice_growth, added many comments
761    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
762    o fix multi-category seaice:
763     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
764       SEAICE_MULTICATEGORY
765     - fix short wave heat flux
766    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
767       and allow to use EVP solver. Change forward lab_sea: test both EVP
768       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
769    o Initial check-in of lab_sea adjoint
770      (very similar to natl_box_adjoint/code_seaice)
771      * used C-grid and EVP solver
772      * used KPP, GM/Redi
773      * uses inAdExact=.TRUE.
774      * gradient checks fail for both ADM and TLM
775        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
776        f.d. gradients actually seem more problematic than ADM, TLM gradients;
777        issue is related to forward mismatch between g77 an ifort
778    o pkg/seaice: overhaul of thermodynamics
779     - growth.F and groatb.F are replaced by new routine seaice_growth.F
780     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
781     - move a few global fields out of SEAICE.h into seaice_growth.F and
782       make them 2D (FICE/QNETO/ ...)
783     - remove FO (it is the same as QNETO)
784     - introduce a few local fields to avoid modifying external fields such
785       as atemp, etc.
786    
787    checkpoint58s_post
788    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
789      changed exf_set_gen.F so that
790        genperiod=0 means input file is one time-constant field and
791        genperiod=-12 means input file contains 12 monthly means
792    o CG2D: use pre-computed solver main-diagonal (stored in common block);
793      this affects truncation error ; generate new output file for exp. which
794      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
795        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
796        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
797        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
798        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
799        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
800    o start implementation of deep-atmosphere and anelastic formulation
801    o verification: remove 2nd copy of input files and use script "prepare_run"
802      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
803    o mom_common/vecinv/fluxform: fix a few initialisation isssues
804    o profiles: fix for multithreaded case
805    
806    o diagnostics: rename few diags:
807      s/'PRESSURE'/'RCENTER '/g
808      s/'TICE    '/'oceFreez'/g
809      s/'TAUX    '/'oceTAUX '/g
810      s/'TAUY    '/'oceTAUY '/g
811      s/'SWFLUX  '/'oceQsw  '/g
812      s/DIFx/DFxE/g
813      s/DIFy/DFyE/g
814      and add few ocean-forcing diagnostics:
815      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
816    o modifications to pkg/seaice/growth.F and budget.F, which change results of
817      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
818      as actual snow thickness.  It now refers everywhere to effective snow
819      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
820    
821    checkpoint58r_post
822    o modifications to pkg/seaice/growth.F, which change results of
823      lab_sea experiment: fixes pertain to melting snow over open water, to
824      masking EVAP under sea ice, and to using the correct AREA variable for
825      computations of EVAP, PRECIP, HSNOW, and GHEFF
826    o add ability to read bathy, salt, and theta using MNC (off by def)
827    o add flooding algorithm and advection of HSNOW for pkg/seaice;
828      both are turned off by default and do no change any results
829    o seaice advection with pkg/thsice: a step toward the use of non-linear
830      advection scheme, but #ifdef or commented out for now (requires more EXCH).
831    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
832      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
833      in natl_box (affects results @ truncation level: update output.txt)
834    o multi-threading and IO:
835      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
836      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
837        (needed to work with SingleCpuIO): tested in all verif. exp.
838    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
839      affects the results (but none of the verification test uses this scheme).
840    o Adding some pkg/diagnostics capability to pkg/seaice
841      (will certainly be subject to changes)
842    o ctrl: adding new control variables:
843      lwflux, lwdown, evap, snowprecip, apressure, runoff
844    
845    checkpoint58q_post
846    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
847      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
848      high_res_cube configuration by 4% on Columbia.
849    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
850      add (in global_with_exf/code) a version of EXF_INTERP_READ without
851      dynamical allocation (seems to work in multi-threaded).
852    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
853      single CPU io) so that TAF does not have to see EESUPPORT.h
854    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
855    
856    checkpoint58p_post
857    o obcs: stop if obcs is used with useCDscheme = .true.
858    o shelfice:
859     - fix a sign error so that no slip at shelfice interface works
860     - remove stop for combination non-hydrostatic code and shelfice. That does
861       not mean, that the results are correct, but at least they are numerically
862       stable
863    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
864    o added adjoint exch routined for all exch*3d* routines
865      and updated flow directives
866    
867    checkpoint58o_post
868    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
869      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
870    o change controling S/R for writing pickup file (new S/R do_write_pickup)
871      and clean-up reading/writing of pickup files.
872    o fix local version of read/write pickup (NH part) in rotating_tank/code
873    o simplify EXCH interface:
874     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
875     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
876    o added the regrid package
877    o shelfice:
878     - add a simple boundary layer scheme to reduce noise
879     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
880    
881    checkpoint58n_post
882    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
883       local variable (not in common block).
884    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
885      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
886      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
887        to work with SingleCpuIO.
888    o add "_d 0" to real constant of pkg/cfc subroutines ;
889       update exp. cfc_exemple & tutorial_cfc_offline output files.
890    o multi-threading and IO:
891      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
892        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
893      - barrier before and after reading.
894      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
895      - avoid using MDS_WRITELOCAL for LAND pkg output.
896      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
897        common-block variables ; Allows multi-threading with master-thread IO.
898    o change default MAX_NO_THREADS from 32 to 4 ;
899      and stop cleanly when MAX_NO_THREADS is too small.
900    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
901    
902    checkpoint58m_post
903    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
904       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
905    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
906       keep global_ocean.90x40x15 (for AD testing) with former secondary test
907       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
908    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
909        add MITgcm_tutorials (= code + all the tutorials)
910    o ecco, option to compute cost for total ssh (mean+anom)
911    o consistent with addition of ptracer and ssh in pkg/profiles
912    o profiles: adding ptracer and ssh
913    o testreport: change multi-test output-file name
914      (from output.txt.{name} to output.{name}.txt)
915    o profiles: now ok for mutli-tiles case
916    o seaice: add 4 parameters for different advection schemes for area,
917      (effective) seaice thickness, enthalphy, and snow height. Their default
918      is the standard parameter SEAICEadvScheme
919    o calc_gw:
920     - add cosFacU in zonal viscous flux (harmonic.visc.).
921     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
922       of tutorial_plume_on_slope.
923    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
924    o calc_gw: true flux-form, account for horizontal grid spacing.
925      update rotating_tank results, but not plume_on_slope (affected at
926      truncation level, 11 digits).
927    
928    checkpoint58l_post
929    o calc_gw:
930     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
931     - remove side-drag for now (need to fix it); update plume_on_slope results.
932     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
933    o commit code to make SST/SSS weights spatially variable
934      (based on either variable in-situ or variable initial T/S weights)
935    o pkg/ecco:
936      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
937        now based on horizontally varying weights wthetaLev, wsaltLev
938      * cost_averagesflags now returns year indices in addition to day, month
939      * sflux balance is performed on annual basis
940        (sflxumm, sfluxmm2, bal_sfluxmm)
941      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
942        including separate counting and multipliers
943    o pkg/rbcs
944      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
945    
946    checkpoint58k_post
947    o testreport:
948     - always build in dir. "build" (if not there, mkdir build instead of building
949       & running in input)
950     - run in dir run (if it exists), in build otherwise.
951     - call prepare_run (if input/prepare_run exists)
952     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
953    o pkg/exf modifications to interpolation and rotation routines for more
954       reasonable treatment of North Pole singularity: for tracers North Pole
955       value is set to northernmost zonal-mean value, for zonal velocity it is
956       set to zero, and for meridional velocity it is set to northernmost value.
957    o pkg/exf/exf_check_range.F
958     - add tile index to diagnostics and move stop statement to the very
959       end of the routine.
960    o pkg/diagnostics: (diagnostics_main_init.F)
961      define title of isomorphic variables according to the current config.
962    o pkg/thsice with pkg/seaice dynamics:
963    - fix domain of computation (interior only, required for exf) and do exchanges
964    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
965    o towards a standard way of dealing with multi-threading in MONITOR
966      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
967    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
968       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
969    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
970    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
971    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
972       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
973    o tracer advection:
974     - clean-up and simplify calc_common_factors.F
975     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
976       advection subroutine (but still not used within DST advection S/R)
977    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
978    
979    checkpoint58j_post
980    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
981      from file (collects calls previously in FORWARD_STEP)
982    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
983    o adjoint store dir. adjusted accordingly
984    o genmake2
985      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
986    
987    checkpoint58i_post
988    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
989      on wind stress (SEAICEstressFactor defaults to 1.)
990    o Total number of Timers is finite (<=40): comment out 2 non-essential one
991      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
992    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
993      on CS-grid: no longer loosing mass.
994    o exf & curvilinear-grid: no longer modify longitude xC & xG.
995    o pkg/ggl90: fix sloppy output and fix a bug
996    o pkg/seaice: added SEAICEuseEVPpickup parameter
997      - Set to false in order to start EVP solver with
998        non-EVP pickup files when using SEAICEuseEVP
999      - fix sign error in diffusion in seaice_calc_rhs
1000    
1001    checkpoint58h_post
1002    * Modifications for bottom topography control
1003      o replace hFacC by _hFacC at various places
1004      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1005      o add non-self-adjoint cg2d_nsa
1006      o update autodiff support routines
1007      o re-initialise hfac after ctrl_depth_ini
1008      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1009    * Adding verification for 5x5 box (4-layer) bottom topography control
1010    
1011    checkpoint58g_post
1012    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1013       used for mean seasonal cycle, mean diurnal cycle); add an example
1014       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1015    o pkg/ggl90:
1016      - add parameter (minimum surface kinetic energy)
1017      - fix bug (avoiding division by zero)
1018    o couple pkg/thsice to pkg/seaice:
1019      - modify advection in seaice to accomodate new scalar fields to be advected
1020      - only muliDimAdection scheme work with seaice/thsice
1021      - mapping of thsice-variables to seaice-variables, back and forth
1022      - does not break the verification experiments, but does not give the
1023        desired results either
1024    o pkg/seaice
1025      - make (default) second order advection a bit less confusing?
1026    
1027    checkpoint58f_post
1028    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1029      to pkg/seaice):
1030      - new routines thsice_map_exf and thsice_get_exf provide the interface
1031      - add an additional formal parameter to thsice_solve4temp
1032    o pkg/exf:
1033      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1034      - correct Stefan-Boltzmann constant
1035      - new parameter for longwave surface emittance
1036      - separate some stuff from exf_bulkformulae into new routines  
1037        exf_radiation, exf_wind
1038      - add new parameters and constants: longwave emissivity for ocean, ice
1039        and snow, evaporation parameters over ice
1040      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1041        either wind from stress or stress from wind
1042    o pkg/thSIce:
1043    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1044    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1045       and THSICE_CALC_THICKN
1046    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1047    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1048      to make debugging easier.
1049    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1050    o pkg/bulk_force:
1051      - clean-up comments and parameters ;
1052      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1053    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1054      generate new output for test-experiment: aim.5l_cs.thSI
1055    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1056      testreport accordingly
1057    
1058    checkpoint58e_post
1059    o SEAICE_CGRID adjoint done
1060    o R_STAR adjoint implemented.
1061      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1062      * need to sort out init. of h0facc, etc.
1063    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1064      to be able to use it in pure forward.
1065    
1066    checkpoint58d_post
1067    o upgrade simple test-experiment to tutorial example:
1068     step.1: duplicate the experiment and (step.2) will remove the old copy.
1069      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1070      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1071      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1072      tutorial_global_oce_biogeo    <- copy of dic_example
1073      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1074      tutorial_plume_on_slope       <- copy of plume_on_slope
1075      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1076      tutorial_global_oce_optim     <- empty for now (David ?)
1077      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1078     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1079    o correct a sign problem in cost_scat.F
1080    o obcs and ptracers: fix boundary conditions for advections schemes
1081      with larger stencil
1082    o thsice adjoint: start
1083    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1084      completeness
1085    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1086      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1087    o ptracers adjoint:
1088      * avoid extensive recomputatations
1089      * fix missing re-init. of gptr (missed by TAF)
1090    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1091      me to turn off the excessive output to STDOUT that this package produces
1092    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1093      and add those terms in Vector-Invariant formulation.
1094    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1095      if the control period (xx_hfluxperiod etc) is 0
1096    o in profiles pkg, clean routines and fix details
1097    o in ecco pkg, reading ssh data:
1098      fix problem in case the model does not start at iter0=0
1099    o fix mnc-pickup/restart for ptracers
1100    o new package prifiles:
1101      code to compute profile-based cost by Gael Forget
1102      (modifs in ecco, ctrl, autodiff)
1103    o Benign bug fix in initialization (spotted by M. Mazloff) of
1104      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1105    
1106    checkpoint58c_post
1107    o adjoint: finish NLFS adjoint and provide reference output in
1108      verification/global_ocean.90x40x15/results_ad_nlfs
1109    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1110      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1111      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1112      with SEAICE_CGRID defined.
1113    o move calendarDumps from "data" to "data.cal" and clean-up the code
1114      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1115    o add useEXF & useCAL flags (for now, set in hard-coded way)
1116    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1117      (were missing in NH mode, and wrong in quasihydrostatic mode).
1118      waiting for Chris updated version of calc_gw to add those CALLs.
1119    o fix bug in quasihydrostatic S/R ;
1120      add a test for this option: global_ocean.90x40x15.qshyd
1121    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1122      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1123    o add on/off flag useOffLine for package OFFLINE
1124    o seaice:
1125      - modify advection so that it works also on the C-grid
1126      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1127        problem in multi-tile runs with C-grid
1128      - add flags for clipping ice velocities and/or masking solver forcing
1129      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1130        C-grid solver
1131      - added a few comments to seaice_diffusion.F
1132      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1133        are now exclusive)
1134      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1135        required re-ordering the code a little:
1136       + make DAIRN global variable (defined in SEAICE)
1137       + move computation of the viscosities eta and zeta into a new separate
1138         routine (because I need to recompute them in seaice_ocean_stress.F)
1139    
1140    checkpoint58b_post
1141    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1142      update output.txt of exp. aim.5l_cs.thSI
1143    o various mnc cleanups and improvements:
1144      + shrink lookup tables by factor of ~4
1145      + better error reporting when running out of lookup space
1146      + able to handle longer path/file names (up to 500 chars)
1147    o adjoint:
1148      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1149      - TBD: "hidden" mom_vecinv recomp. in dynamics
1150    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1151     (allow to differentiate between forcing components using new integer flags:
1152      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1153     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1154    o ecco
1155      - enable trend removal from SSH anomaly obs.
1156    o adjoint
1157      - a fix for PmEpR when #undef EXACT_CONSERV
1158      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1159      - try to fix "hidden" recomp. in forward_step for NLFS
1160        (NLFS seems broken sometimes after I checked it in)
1161    o seaice:
1162     - add c-grid version of the dynamic solver:
1163       + three new routines that are the c-grid substitute lsr, dynsolver
1164         and ostres
1165       + put a few fields that were local to dynsolver into global common
1166         blocks, so that I can move the computation of stresses etc into
1167         seaice_lsr (saves coding but may break the adjoint).
1168     - replace more hardwired parameters by runtime parameters
1169     - add ice masks that mask the rhs of the implicit solvers where there
1170       is no ice (commented out in seaice_dynsolver, because i am not sure
1171       if this works properly), eventually this should replace the clipping
1172       of ice velocities in seaice_dynsolver to +/-40cm/s.
1173    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1174      include it only where its needed
1175    o move balancing of fluxes before the call of external_forcing_surf
1176    o seaice:
1177      - correct units of turning angles (now they are really in degrees)
1178      - move computation of GWATX/Y out of main routine into dynsolver
1179      - initialize GWATX/Y in seaice_init
1180    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1181      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1182    o seaice: add runtime flags for turning angles (default to zero)
1183    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1184      and trend from exf forcing and ctrl control adjustments
1185    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1186      (since checkpoint57x_post)
1187    o change the default rotation period to 86164.s = the Earth rotation
1188    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1189      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1190    o seaice advection: add code for choosing between the default (2nd order
1191      central differences) and multiDim advection schemes provided by
1192      pkg/generic_advdiff
1193    o seaice:
1194      - removed all references to SEAICE_GRID.h fields from
1195        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1196        (cubed-sphere configuration will change a little)
1197      - grid computations in seaice_init are obsolete now.
1198      - cleaned up code a little so that is easier to read (hopefully).
1199      - added new (better?) discretizations of default advection and diffusion
1200        (turn on with SEAICEuseFluxForm)
1201      - replace 1 in 3d global fields by kSurface in growth.F
1202      
1203    checkpoint58a_post
1204    o seaice:
1205      - bug fix in advect.F
1206    o shelfice:
1207      - separate shelfice load anomaly from pload (breaks with time
1208        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1209        Its default is 0., but it may be computed more cleverly from (unknown)
1210        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1211        done offline. A good approximation of the pressure load anomaly is
1212        necessary to avoid large initial adjustment processes underneath
1213        deep-reaching shelfice.
1214      - small fix in ISOMIP shelfice_thermodynamics
1215      - add more sophisticated thermodynamics of Hellmer (1989), this is
1216        now the default
1217      - give a few constants more intuitive names
1218    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1219      if bulk formulae are used in long integration (especially EmPmR). Turn
1220      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1221      if balancePrintMean, the imbalance that is substracted is printed to
1222      STDOUT.
1223    o fix bug (typo) in obcs_apply_eta.F
1224    o add a new package shelfice which enables us to model the circulation
1225      underneath shelf-ice with draughts of hundreds of meters.
1226     - works
1227     - to do: + include improved thermodynamics
1228              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1229                instead of new field kTopC
1230              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1231                instead of new field R_shelfIce and new code in ini_depth.F
1232                and ini_mask_etc.F?
1233              + adjust vertical mixing schemes?
1234    o seaice pkg:
1235     - add a cpp-flag to include a simple formula for a salinity dependent
1236       freezing point of sea water at the surface
1237     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1238       meridional stresses are now different (and hopefully correct)
1239    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1240       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1241       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1242    o pkg/diagnostics: add options and parameters for regional-statistics
1243       diagnostics ; define regions by reading a region-mask from a file
1244       (might add other options later)
1245    o pkg/bulk_force:
1246     - add option and parameters to use AIM surface-flux formulae.
1247     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1248       others forcing fields (defined in PARM05, parameter file "data") are loaded
1249       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1250     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1251     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1252     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1253       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1254     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1255    
1256    checkpoint58
1257    o add "--embed-source" option to genmake2 which, when the supporting
1258      tools can be compiled (as determined by genmake2) will turn on the
1259      embed_files package which then embeds the entire MITgcm source code
1260      (*.[fFhc] + Makefile) used for the build within the executable
1261      - requested by CNH but off by default
1262      - adds a paltry <9MB to the mitgcmuv executable in most cases
1263      - only writes the output when useEMBEDSRC in eedata is true
1264    o clean up 3-dim. relaxation codes:
1265      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1266      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1267      * Thanks to Tom Haine for testing!
1268    
1269    checkpoint57z_post
1270    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1271      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1272    o fix the pickup behavior for obcs in combination with ptracers
1273    o fix a bug in ptracers_external_fields_load
1274    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1275      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1276    o transfered surface NH pressure to eta field (if exactConserv).
1277    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1278         and update lab_sea output.txt file.
1279    o completing 3-dim. relaxation code: additional term
1280         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1281      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1282      * At compile time, in "EXF_OPTIONS.h" set
1283          #define  ALLOW_CLIMTEMP_RELAXATION
1284          #define  ALLOW_CLIMSALT_RELAXATION
1285      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1286          tauThetaClimRelax3Dim = 15552000.0,
1287          tauSaltClimRelax3Dim  = 15552000.0,
1288      * 3 cases:
1289          1) Use a constant-in-time 3-dim. field
1290          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1291          3) Real-time relax. to time-evolving prescribed field
1292    o Adding Laplacian-type smoothness constraint on
1293      initial and boundary (forcing) controls (ic, bc)
1294      * enable at compile-time via
1295        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1296      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1297      * Absolute scale somewhat unclear so far
1298      * no area weighting was included since no other cost term does so far
1299    
1300    checkpoint57y_post
1301    First step for a NLFS adjoint
1302    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1303    o new init. routines for calc_r_star, calc_surf_dr
1304    o still need to deal with ini_masks_etc
1305    o testreport seemed happy
1306    checkpoint57y_pre
1307    
1308    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1309    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1310    o add new offset feature to offline pkg (plus minor cleanup)
1311    o cfc fixes for final year of integration
1312    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1313      be in GCHEM_OPTIONS).
1314    
1315    checkpoint57x_post
1316    o fix testreport Pb in multiple test experiment.
1317    o cleanup our namelist syntax in verification:
1318      - make it more F95 standards compliant (some work still needed)
1319      - allows the vast majority of our tests to work with gfortran
1320    o Non-Hydrostatic:
1321     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1322     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1323    o Allow to apply AB on T,S rather than on AB(gT,gS):
1324     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1325     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1326       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1327     - need a "clever" read_pickup to restart from the other AB formulation
1328    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1329    o remove some unused variables (reduces number of compiler warnings)
1330    o adjoint
1331      * Disable useVariableViscosity for adjoint for time being
1332        (there are a number of extensive recomputations)
1333      * Initialize certain variables needed for adjoint
1334    
1335    checkpoint57w_post
1336    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1337                 fix the singleCpuIO RS version of MDSWRITEFIELD
1338       and add a WARNING if using globalFiles=T with multi-processors.
1339    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1340      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1341    o tracer advection scheme:
1342      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1343       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1344       was not very convenient).
1345      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1346       (further tests needed for the implicit DST & Flux-Limiter schemes).
1347    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1348      and sRef for convenience, handy, when you want to initialize
1349      ptracers in a large domain with a constant non-zero value. Also,
1350      untangle ptracers_init.F a little.
1351    
1352    checkpoint57v_post
1353    o change dome exp. to use variable viscosity in side-drag terms.
1354    o remove all the files from the cfc_offline test since they are now
1355      incorporated into tutorial_cfc_offline which has been producing
1356      identical results for a few days of testing
1357    o add new parameter: sideDragFactor to enable half-slip-side BC
1358      and change side-drag S/R to use viscosity from mom_calc_visc
1359      (can switch back by setting sideDragFactor=0.); affects results at
1360      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1361       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1362    o vorticity & strain are now computed without masking, to account for
1363      no-slip-side BC in variable viscosity calculation ; mask is applied
1364      anyway later on, before computing advection/coriolis terms.
1365    o modify exp4 to test new obcs support for reading from external files
1366      and for passive tracers
1367    o fix behavior of ptracers_monitor when monitor output is written to a
1368      netcdf-file; still not independent of monitor.F (writes in the same
1369      file).
1370    o change default value of tRef (put a uniform, meaningful value for ocean
1371      & atmos) and initialize sRef (was missing, as Martin mentioned).
1372    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1373      to be proportional to enstrophy dissipation length.  Thus,
1374       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1375      This is now consistent with Smagorinsky and with the manual.
1376    
1377    checkpoint57u_post
1378    o OBCS and PTRACERS: add open boundary support for passive tracers
1379      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1380        OB-values from file; this is not different from the way theta and salinity
1381        are treated
1382      - however, Orlanski-radiation conditions are not supported, and the model
1383        will stop if you use pTracers and Orlanski at the same time.
1384      - beefed up the rountine obcs_external_fields_load: now only those open
1385        boundary values are overwritten with values from files for which there
1386        are really files, otherwise the OB-fields remain untouched. This makes
1387        it possible to use different OBs at different ends of the domain (as
1388        with EXF)
1389    o reduce number of exch calls in shap_filt (s2).
1390    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1391      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1392    
1393    checkpoint57t_post
1394    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1395    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1396      same truncation, independent of the face number: affects affects several
1397      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1398    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1399      note that biharmonic viscosity + no-slip was not tested in any experiment.
1400    o fix bug in non-linear free-surf side-drag ; generate new output for
1401      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1402    o make mnc honor the writeBinaryPrec flag for most kinds of output
1403    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1404    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1405      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1406    o add brackets in multi-terms sum to get same truncation, independent of
1407      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1408      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1409    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1410      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1411      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1412      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1413      Suggested values of viscosity parameters found in mom_calc_visc.
1414      Many new viscosity diagnostics available.
1415    
1416    checkpoint57s_post
1417    o Add clearing-house for viscosity calculations, mom_calc_visc and
1418      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1419      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1420      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1421      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1422      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1423      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1424      ViscAhStrain and viscAhTension are now retired.
1425    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1426    o In response to JMC's bug report, genmake2 now ignores any soft-links
1427      that it finds in the *current* directory when searching for files.
1428      Soft-links found in any other source directories will still work as
1429      they did before.
1430    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1431      a C routine to unlimit the stack size
1432    o mnc-ify pkg/aim snapshot vars
1433    o mnc-ify pkg/land as requested by Daniel
1434    o various changes to mnc including:
1435      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1436      - output can now be grouped so that all files within a group
1437          change the ITER portion of their names in lock-step together
1438      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1439          and works with both EXCH1 and EXCH2 (but needs more testing)
1440      - writing works for all verification test cases w/ g77 on Linux
1441    
1442    checkpoint57r_post
1443    o make MNC variable initialization happen earlier
1444    o add diagnostics for (almost) each term of the momentum Eq.
1445    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1446    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1447    o remove MINIMAL_TAVE_OUTPUT option ;
1448      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1449    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1450      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1451    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1452    o add time-dependent SST, SSS control
1453    o cost terms in ecco/ modularized (new cost_generic.F)
1454    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1455    o new infrastructure for seaice model vs. obs misfits in seaice/
1456      * driver from the_main_loop.F is seaice_cost_driver.F
1457      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1458      * gradient check in Exp. 6a of natl_box_adjoint/
1459    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1460      (see README file)
1461    
1462    checkpoint57q_post
1463    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1464    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1465      - bug was reported by Jean-Michel and Ian Fenty
1466    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1467      update exp. cpl_aim+ocn output.
1468    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1469      Needed for high-res. runs with large global files
1470      to be able to limit tapelev size
1471    o Changed some tests for adjoint:
1472      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1473      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1474      * global_ocean.90x40x15/ back to default 3-level checkpointing
1475    o Modifications to enable scripted COMMON to MODULE conversion
1476      * verification/OpenAD/code/ has necessary scripts and description;
1477      * converts, compiles and runs successfully;
1478    
1479    checkpoint57p_post
1480    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1481    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1482      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1483    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1484    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1485      (was already the case for dissipation with mom_vecinv,
1486       and also the case for grad.PhiHyd when staggered-timeStep)
1487      This will allow to put dissipation out-off the AB time-stepping.
1488     Unfortunately, affects truncation error. Update output of exp. that "fails"
1489      (cg2d matching number) and leave the others for later: front_relax(10),
1490      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1491      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1492    
1493    checkpoint57o_post
1494    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1495      (2) its ready to be documented during the 20050801 DocFest
1496    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1497      for ideal_2D_oce and lab_sea on linux_ia32_g77
1498    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1499      in global1x1_tot/code_seaice_adj to access indices 32, 33
1500      (worth another tag)
1501    
1502    checkpoint57n_post
1503    o adding precip control xx_precip 32
1504    o adding swflux control xx_swflux 33
1505    o Replacing 10 forcing penalty cost routines by 1 generic.
1506    o Implementing partitioning in time-mean and variable adjustment
1507      for atmos. state.
1508    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1509    o in natl_box_adjoint:
1510      * updated exp 1 to 10
1511        (but does not have time-mean vs. variable split results yet)
1512    o updated global1x1/*_seaice_adj/
1513      to incorporate latest changes
1514    o enable useSingleCpuIO for mdsio vector routines
1515      (applies in particular to tapelev I/O)
1516    o removed inefficient K-loop in all active_file*control*.F
1517    
1518    checkpoint57m_post
1519    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1520      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1521    o pkg/exch2: filling of face-corner halo regions is optional
1522      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1523    
1524    checkpoint57l_post
1525     tag before updating tutorials (pre-release-2)
1526    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1527       for output and interpolation of input fields onto model grid)
1528    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1529       Affects results of exp. rotating_tank ; update output.txt.
1530    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1531          and taking the square quantity and/or using a fraction-weight field.
1532    o fix aim_diagnostics_init.F mate numbers.
1533    o add mnc output capability to diagnostics/diagstat and update
1534      our cvsignore files for the ACSII output generated
1535    
1536    checkpoint57k_post
1537    o lab_sea now uses diagnostics package and provides a suite of
1538      new EXF diagnostics output.
1539    
1540    checkpoint57j_post
1541    o exf
1542      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1543        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1544        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1545      * extended diagnostics output
1546        - now includes all EXF variables
1547        - hs, hl moved to common block
1548        - separate S/R for diagnostics, called after ctrl vector is added
1549        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1550        - EXFqnet contains true Qnet (i.e. includes qsw)
1551      * updated verif. lab_sea, global_with_exf
1552      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1553        to ensure that diagnostics sees a true EXFqnet
1554    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1555    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1556      several times with different frequencies.
1557    o mnc-ify the thsice package as requested by Daniel Enderton
1558      - the monitor--MNC output needs work
1559      - many attributes need to be added (most are currently blank)
1560    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1561      - many attributes need to be added (most are currently blank)
1562    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1563    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1564    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1565      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1566         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1567    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1568     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1569    
1570    checkpoint57i_post
1571    o Diagnostics package was changed: diagnostic allocation is now deactivated
1572      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1573    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1574      add 1rst Order upwind vertical Shear.
1575    o add a quick fix for A/B checkpointing in OFFLINE mode
1576    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1577      end-run around the C/Fortran linking horror in eesup/src/timers.F
1578    o added pkg/runclock: allows user to terminate run based on wall clock
1579    o added non-hydrostatic scaling parameter: nh_am2
1580    o pkg/my82: futile attempt to make results compiler-independent by adding
1581      some "_d 0", etc. no effect.
1582    o for mnc output, fill the 'T' coordinate var with myTime and create a
1583      separate 'iter' variable for iteration count
1584    o pkg/diagnostics:
1585      add new capability: output of Global/Regional & per-level statistics ;
1586      tested against monitor output (including land & thSIce) on various exp.
1587    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1588    
1589    checkpoint57h_done
1590      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1591      data.diagnostics, data.gchem, data.ptracers) is done.
1592    
1593    o pkg/diagnostics: prepare for Global/Regional statistics.
1594      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1595    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1596      and rename it: DIFFERENT_MULTIPLE
1597    
1598    checkpoint57h_post
1599    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1600    o pkg/diagnostics: change output frequency, now in seconds (instead
1601      of Nb of iterations). This requires to change data.diagnostics.
1602    checkpoint57h_pre
1603    
1604    o in mnc, let the user create the output dir if both mnc_outdir_date
1605      and mnc_outdir_num are false
1606    o add fflags() to pkg/diagnostics which allows one to specify, on a
1607      per-file basis, the file precision [default behavior is unchanged]
1608    o added diagnostics to pkg/kpp, including computation of mixed layer
1609      depth based on a temperature/density criterion
1610    o updated verification/natl_box to test the new pkg/kpp diagnostics
1611    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1612    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1613    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1614      not mnc -- this mistake was found by JMC and is now corrected
1615    
1616    checkpoint57g_post
1617    o add Adams-Bashforth 3rd Order time stepping:
1618      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1619      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1620    checkpoint57g_pre
1621    
1622    o make lambda[Theta,Salt]ClimRelax spatially varying
1623      (default remains spatially uniform constant based on tau)
1624    o added new control variables
1625      * init. uVel, vVel, etanN
1626      * lambda[Theta,Salt]ClimRelax
1627    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1628      (suggested by G. Forget)
1629    
1630    checkpoint57f_post
1631    o add parameter "baseTime" = model base time = time at iteration zero
1632      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1633      account for baseTime shift
1634    o move Coriolis arrays from PARAMS.h to GRID.h
1635    checkpoint57f_pre
1636    
1637    o mnc-ifying the seaice package
1638    o introduced an alternative length scale calculation for use in the limiting
1639      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1640    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1641    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1642      as well as grad(vort3).  Made it compatible with both approximate form
1643      for the cubed sphere and full form of these gradients.  Added flag
1644      useFullLeith to select between approximate and full form.  
1645    o add "d0" in getcon.F to reduce differences between compilers/platforms
1646      update output.txt of exp. fizhi-gridalt-hs
1647    o change port_rand funtion to allow to set the seed.
1648    o fix obscure MNC bug involving conversion between reals and integers
1649      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1650        new version is now more standards-compliant
1651    o adjoint-related modifications
1652      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1653      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1654      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1655    
1656    checkpoint57e_post
1657    o Adding eddy stress controls a la Ferreira et al.
1658    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1659    
1660    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1661      update output.txt of exp. fizhi-gridalt-hs
1662    o add more "Z" dimensions and associated coordinate vars to MNC
1663    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1664    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1665      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1666      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1667      months and years.  Requires pkg/cal.
1668    o diagnostics: add pickup functionality
1669      - off by default for backwards compatibility
1670      - current version only uses MDSIO -- MNC will be added
1671    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1672    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1673    
1674    checkpoint57d_post
1675    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1676    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1677      output from the diagnostics package
1678    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1679    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1680      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1681    o add coordinate variables to the MNC output from the diagnostics package
1682    o change MNC-flags default value: true when useMNC=TRUE
1683    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1684      the ability (off by default) to read the grid information using MNC
1685    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1686    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1687    o do snap-shot diagnostics at the middle of the time-interval (instead of
1688      at the end).
1689    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1690      new test for AIM with thSIce + slab-ocean
1691    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1692    o move state variable diagnostics to the beginning of the time step ;
1693      (note: still needs some work specially for snap-shot diagnostics)
1694      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1695    
1696    checkpoint57c_post
1697    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1698    o generate new output.txt files on faulks with g77 & the new -ieee option
1699    checkpoint57c_pre
1700    
1701    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1702      update output.txt of exp. global_ocean.90x40x15
1703    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1704      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1705    o add saltFlux(+File) forcing capability with periodicExternalForcing
1706    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1707    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1708    o improvements for the MNC output from DIAGNOSTICS:
1709      - correct handling of the unlimitied dimension
1710      - all dims now have associated coordinate variables
1711      - variables located at U, V, and Corner ("Z") points are now written
1712        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1713        *all* data points are output
1714    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1715    o added pkg/seaice/seaice_monitor.F
1716    o mdsio_readfield.F can now read files visible only to master MPI process.
1717    o pkg/seaice: some test code for ice-modified ocean stress
1718    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1719      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1720      spurious negative numbers for precipitation and humidity.  Will cause
1721      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1722    o pkg/ctrl/
1723      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1724        May be enabled via doPackDiag
1725      *  introduce z-scaling of
1726         + gradient (doZscalePack) and
1727         + control (doZscaleUnpack)
1728    o pkg/mdsio/
1729      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1730      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1731    
1732    checkpoint57b_post
1733    o simplify options in diagnostics_fill arguments (remove weird combinations)
1734    o fix MNC coordinate variables so that they now contain per-face index
1735      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1736      general, EXCH2 grids are only aligned to a "local" coordinate system
1737    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1738    o Implement instantaneous output within pkg diagnostics:
1739      setting a negative frequency in data.diagnostics produces
1740     "snap-shot" output (as opposed to time-average if freq > 0)
1741    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1742      NOTE: change ptracer diagnostics name: use 2 characters to work with
1743            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1744    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1745      becomes the coordinate variable for the 'T' dimension
1746    o add CF-style coordinate variables to MNC
1747      - just a first cut:  numbers are meaningless on the cubesphere and
1748        missing along the T axis but otherwise it works!
1749    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1750    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1751    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1752      this is based directly on what the model compute, so that the content of
1753      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1754    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1755    o clean up build options files for SunOS, in particular
1756      - remove -traditional from xmakedepend
1757      - change -xarch=v9 to -xarch=native for f77
1758      - restore use of make (not gmake)
1759      - add CC=gcc if using g77
1760    o changes per discussion of AM, JMC, & EH3 today:
1761      - move redundant "grid" variables out of "state" -- in preparation of
1762        creating proper CF-style coordinate variables and in recognition
1763        that any/all grid variables can be easily copied (eg. w/NCO) from
1764        the grid files into any of the other NetCDF files
1765      - *always* output grid variables with MDSIO (this will eventually be
1766        changed)
1767      - output MNC grid file if useMNC is true
1768    o every instance of _END_MASTER() has been found and replaced with
1769      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1770      preprocessors
1771    o re-arrange diagnostics pkg initialisation:
1772     - allow each package to extend the available diagnostics list
1773     - add some checking and fix small problems (multi-threaded, ...)
1774     - new S/R diagnostics_fill (replace fill_diagnostics):
1775       look through the short list of active diag. (instead of the long list)
1776       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1777    
1778    checkpoint57a_post
1779    o this set of changes restores TAMC compatibility
1780      tested for global_ocean.90x40x15 adjoint on trough
1781      (what a pain)
1782    
1783    checkpoint57a_pre
1784    o some modifs in tools/build_options for sunos
1785    o call ctrl_pack for ctrl at end for optimcycle=0
1786    
1787    checkpoint57
1788    o add horizontal bi-harmonic viscosity for vertical velocity
1789      - new parameter viscA4W (defaults to viscA4)
1790      - affects only non-hydrostatic code
1791      - to be done: no-slip lateral boundary conditions
1792    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1793    o implement Implicit Vertical advection for pTracers
1794    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1795      (implemented also for implicit vertical diffusion & advection)
1796    o OBCS: extend application of tracer open boundary conditions
1797      to a strip beyond the boundary of width Olx/Oly
1798    o add call monitor to TAF set of required calls (flow directives)
1799      and include in natl_box_adjoint
1800    o untangle a few ifdefs related to cost, ctrl, autodiff
1801      untangel a few ALLOW_ECCO_OPTIMIZATION
1802    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1803      (theta2, salt2 in ecco_cost_weights)
1804    
1805    checkpoint56c_post
1806    o OBCS as control variables
1807      - update ctrl_ad_diff.list, obcs_ad_diff.list
1808      - remove balance of obcs controls from default
1809      - fix index bug nobcs in ctrl_init
1810      - fix dummy fields filen in ctrl_pack
1811      - add dummy weights for obcs
1812    o lsopt: comment out fort.94 output
1813    o optim:
1814      - remove unnecessary header files
1815      - adjusted namelists
1816      - add xerbla.F to Makefile
1817    o exf:
1818      - multiple modifications of exf_check_range
1819      - unit change in exf_init_runoff from [m/year] to [m/s]
1820    o mdsio:
1821      - i/o-vector change debugLevel from debLevA to debLevB
1822    
1823    checkpoint56b_post
1824    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1825      is called from DO_THE_MODEL_IO
1826      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1827      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1828      - clean up PTRACERS_WRITE_TIMEAVE a little
1829    o add another verification experiment that tests both the cfc-pkg and
1830      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1831      reactive tendencies treated inline with regular timestepping
1832    o testreport previously did a lousy job of comparing small numbers, so
1833      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1834      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1835      testreport.
1836    o ptracers_monitor: bug fix for MPI
1837    
1838    checkpoint56a_post
1839    o GCHEM: finish reorganizating the package
1840      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1841        (introduces another 3D-array for each passive tracer, but only if
1842        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1843        gchemTendency is not needed because the timestep is done separately)
1844      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1845      - GCHEM is now---more or less cleanly---separate from PTRACERS
1846      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1847        so clear to me how that should be done in a general way.
1848    o CFC: improve formatting of output in CFC_ATMOS
1849    o PTRACERS:
1850      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1851        that ALL experiments with ptracers enable can be checked. This makes
1852        GCHEM_MONITOR obsolete.
1853      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1854        monitorFreq
1855      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1856    o add PTRACERS (PTR0[1-5]) to testreport output
1857    o exf_check_range:
1858      * default changed to .TRUE.
1859      * will check values for niter0 if debLevA, every timestep if debLevB
1860      * STOP in exf_check_range if 'out of range'
1861      * range chosen generous to allow for potential extema
1862      TBD: a version with stricter range
1863           permitted range would be runtime parameters
1864    o GMredi:
1865      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1866      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1867      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1868    o GCHEM:
1869      - move call to GCHEM_FORCING_SEP, so that it is now called before
1870        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1871      - introduced a useGCHEM runtime flag and applied it everywhere.
1872      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1873        this flag is now only visible within GCHEM-pkg routines.
1874      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1875        be replaced by a 3D array that is computed before thermodynamics; for
1876        this, the tracer ID iTracer had to be included into the parameter list
1877        of ptracers_forcing
1878      - set up forward_step to call gchem_forcing, that will replace
1879        gchem_forcing_int in ptracers_forcing
1880      - cleaning up
1881    o small cleaning of exch2: remove files that are also in eesupp/src
1882    
1883    checkpoint56
1884    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1885    o mnc: cleanup "full" files--fixes out-of-memory problem
1886    o ECCO-GODAE
1887      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1888      * fully merged and updated from SIO code
1889        windstress sign change affects
1890        - exf_inscal_[u/v]stress
1891        - sign of xx_tau[u/v] adjustments
1892        - signs in cost_scat
1893      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1894      * natl_box_adjoint updated and compressed
1895      * 2-level checkpoint switch added
1896        (tested in EXP. 1 of natl_box_adjoint)
1897      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1898    o SVD
1899      * first complete, non-hacked version for SVD calculations
1900      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1901        performed via direct access files admtlm_vector.it????
1902        (via ctrl_[un]pack)
1903      * optimcycle is used for ARPACK iteration counter
1904        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1905      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1906        and add linear transforms where necessary
1907      * controls are initial/final SST, SSS (can be extended; need to check
1908        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1909    o mdsio: filename info to both stderr, stdout
1910    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1911      from sign change
1912    
1913    checkpoint55j_post
1914    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1915      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1916    o add consistent build directories and .cvsignore files to verification
1917    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1918    o make all subroutines 30 or less characters in length for certain older
1919      compilers to work (a thorough search only turns up two routines in
1920      pkg/ptracers)
1921    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1922      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1923    
1924    checkpoint55i_post
1925    o change arrays for total vertical diffusivity (2.D if explicit,
1926      3.D if implicit) ; each ptracer uses its own background value.
1927    o added mnc/NetCDF output capability to ocn_compon_interf
1928      - added bits to verification/cpl_aim+ocn so that it can run on
1929        ITRDA and other clusters without the mpirun "-wd" option
1930    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1931      configuration
1932    o give MNC the ability to create additional files rather than
1933      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1934      - the default is just less than 2GB which is a practical limit
1935        on many systems
1936    o Compute the non-local term using either KPP vertical diffusivity (=default)
1937       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1938    
1939    checkpoint55h_post
1940    o add verification test "vermix"
1941    o remove all the *_ioinc flags and replace with the single global
1942      outputTypesInclusive flag
1943    o allow to set a vertical profile of vertical diffusivity for T & S
1944    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1945    o useMNC moved from data.mnc to data.pkg
1946    
1947    checkpoint55g_post
1948    o Renaming carbon AD experiments to comply with testreport conventions
1949    o Updating adjoint of Held-Suarez hs94.1x64x5
1950    o Fixing directives for non-ECCO forward_step, after ECCO directives
1951      have been fixed to avoid recomp. of do_oceanic_phys
1952      Works well for global_ocean.90x40x15,
1953      but recomp. issue remains for carbon
1954    o Updating adjoint output for natl_box_adjoint after
1955      pkg/ecco has been modified (see taga c55d_post)
1956    
1957    checkpoint55f_post
1958    o rename to timeave_init_fixed
1959    
1960    checkpoint55e_post
1961    o some delicate re-shuffle of store directives to avoid one
1962      extra call of do_oceanic_physics
1963      affects ecco_the_main_loop.F, do_oceanic_physics.F
1964      checkpoint_lev1_directives.h
1965    o NB: this may break global_ocean adjoint temporarily,
1966      but it is clear how to fix it. Will do later, need this now.
1967    
1968    checkpoint55d_post
1969    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1970    o ecco_cost_weights is modified to 1x1 runs
1971    o modifs to allow observations to be read in as
1972      single file or yearly files
1973    o enable to read exf forcing fields as either
1974      single file or yearly files (flag useExfYearlyFields)
1975    checkpoint55d_pre
1976    
1977    o switch between 2-level and 3-level checkpointing
1978    o add ability of MNC to write local and "partial" (eg. 2D slices where
1979      the full 3D field is never actually stored) arrays to NetCDF files
1980      with the correct (that is, the complete multi-dimensional) set of
1981      array indicies
1982      - used in mom_vecinv() to write the diagFreq output
1983      - tested (demonstrated) in verification/aim.5l_cs
1984    o further mnc-ification
1985      - add verification/lab_sea to the list with mnc setups
1986      - fix undefined mnc v-names in cd_code
1987      - add kpp to mnc output (both snapshot and timeave)
1988    o non-hydrostatic code
1989      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1990        in calc_gw.F
1991      - defaults to viscAh
1992      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1993        friction or Leith) in non-hydrostatic mode, as long as there is
1994        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1995    o pkg/cost
1996      extend simple cost functions to treat time mean quantities
1997      (T,U,V) via cost_accumulate_state from cost_tile
1998    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1999        be 2 times larger than the minimum size the advection scheme requires.
2000        now get a perfect conservation of salt in advect_cs test-exp (updated)
2001    o GGL90 (Gaspar's TKE mixed layer)
2002      - add horizontal diffusion of TKE, requires exchanges in
2003        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2004        default. In OPA there is no horizontal diffusion of TKE but the
2005        mixing coefficients are computed from a horizontal average of TKE of
2006        6 points or so. I think that diffusion has a little more physical
2007        justification.
2008      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2009        was in vain)
2010      - mask tke-variable in ggl90_init
2011    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2012    o fix biharmonic diffusion on CS-grid.
2013    o more obcs stuff
2014      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2015        for reading boundary values. This routine is called from
2016        obcs_prescribe_read
2017      - updated obcs_check
2018      - changed sponge layer relaxation parameter units for days to seconds
2019      - turned off sponge layer by default
2020      - changed argument list of OBCS_CALC to myTime+deltaTclock
2021      - fixed about 35 bugs in obcs_external_fields_load
2022    
2023    checkpoint55c_post
2024    o obcs stuff
2025      - new runtime flags useOBCSprescribe, useOBCSbalance
2026      - re-arranged obcs_calc
2027      - moved exf_getobcs to obcs_prescibe_read
2028        obcs_prescibe_read is called after ORLANSKI stuff
2029        and independent of it (executable can contain all).
2030      - updated obcs_check
2031      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2032        These may be necessary only if tangential velocities are
2033        prescribed at OB, not sure, needs testing.
2034    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2035      which simplifies the calls and passes the ifc check-bounds test
2036    
2037    checkpoint55b_post
2038    o add a 2D scalar, Z location, exchange_2 routine.
2039    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2040      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2041      affects advect_cs results (for the wrong reason): update output.txt
2042    o use a more standard discretization for biharmonic viscosity ;
2043     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2044      affects results of dome set-up: update output.txt
2045    o fix gad_advection.F (CubedSphere part), back to version 1.23
2046    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2047    
2048    checkpoint55a_post
2049    o merged code to
2050      * prescribe/read time-dependent open boundaries
2051        (works in conjunction with exf, cal)
2052      * sponge layer code for open boundaries
2053      * each boundary N/S/E/W now has its own CPP option
2054        (healthy for the adjoint)
2055    
2056    checkpoint55
2057    o up-to-date adjoint of previous breaks
2058      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2059      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2060      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2061      - carbon: * remove tr1-related adjoint verification
2062                * add ptracer as control variable
2063    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2064      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2065    
2066    checkpoint54f_post
2067    o in verification/carbin/ remove experiment related to
2068      ALLOW_PASSIVE_TRACER (array tr1 etc)
2069      code_ad/ input_ad/ results_ad
2070    
2071    o add two new packages
2072      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2073        + subject to optimization (memory)
2074      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2075        + subject to reordering (many GOTOs in the original code)
2076        + so far opps is called for every (i,j) point, and then operates in
2077          the vertical; one may want to reorder the scheme in order operate in
2078          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2079          fields)
2080    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2081      - all verification tests compile and run with linux_ia32_g77
2082      - defaults are compatible with current input files--nothing
2083        should change if you were not previously using MNC
2084      - MNC output has been added in numerous places (eg. timeave)
2085        but there are still a few writes not yet do-able with MNC
2086        (this is in progress)
2087      - flags now allow for either/or/both use of MDSIO and MNC and
2088        documentation will soon follow
2089      - numerous small formatting cleanups for ProTeX
2090    o add version info (via BUILD_INFO.h) to MNC and stdout
2091    
2092    checkpoint54e_post
2093    o add two new packages
2094      - pp81 (Packanowski and Philander, 1981), Richardson number and
2095        stratification dependent mixing
2096      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2097      - these scheme operate in a similar manner as KPP (without ghat, of
2098        course), however there is only one diffusivity that is used for both
2099        temperature and salinity (and passive tracers)ç
2100    o add offline package
2101    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2102      provided by Stephanie Dutkiewicz
2103    o genmake2: add ability to search for C compilers and cleanup test output
2104      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2105    
2106    checkpoint54d_post
2107    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2108    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2109      leading to additional shift by 5 days each year of integration
2110       (i.e. leading to considerable offset over the years)
2111    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2112    o start with no AB and no initial filtering (staggerTimeStep):
2113      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2114    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2115      (external loading & cpl import/export stay in forward_step.F)
2116    o update coupling interface to work with new staggerTimeStep
2117    o change MDSIO ptracers_pickup.
2118    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2119    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2120    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2121    
2122    checkpoint54c_post
2123    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2124      this affects (truncation error) output.txt of test-exp:
2125       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2126    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2127    o change Qnet to always be the net heat flux, (+upward).
2128      affects (truncation error) output of natl_box exp.: updated
2129    o define the max number of passive tracers in PTRACERS_SIZE.h
2130    o start to test mnc routinely in exp0
2131    o add sea-ice loading (sIceLoad) as a new forcing field.
2132    
2133    checkpoint54b_post
2134    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2135       impressive on Altix and Opteron systems)
2136    o diagnostics can now write NetCDF files through the mnc package
2137    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2138    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2139    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2140      affects (truncation error) output of lab_sea & natl_box exp.: updated
2141    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2142    
2143    checkpoint54a_post
2144    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2145    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2146    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2147    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2148      + internal_wave (shift in writing cg2d_ini_res)
2149    checkpoint54a_pre
2150    
2151    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2152      - modified verification/lab_sea and natl_box_adjoint accordingly
2153    
2154    checkpoint54
2155    checkpoint53g_post
2156    o prepare splitting of thermodynamics: store convect.counter in common block
2157    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2158      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2159    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2160    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2161    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2162    o restore adjointability
2163    
2164    checkpoint53f_post
2165    o modifications that affect AIM experiment results (update output.txt):
2166      - no advection of S at top interface Nr (pkg/generic_advdiff)
2167      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2168    o AIM pkg:
2169      - include stability function into surf.Flux derivative relative to Tsurf
2170      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2171    
2172    checkpoint53e_post
2173    o merged cylindrical coord configuration
2174    o added rotating_tank experiment
2175    checkpoint53e_pre
2176    
2177    checkpoint53d_post
2178    o faulks upgraded: re-generate output.txt that have changed:
2179       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2180    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2181    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2182    o added Sadourny discretization of Coriolis
2183      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2184      - re-enabled use of omega3 (useAbsVorticity)
2185    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2186      vector-invariant equations
2187      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2188    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2189      hopefully without new bugs
2190      - still to do: biharmonic friction for non-hydrostatic w
2191    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2192    o regenerated output for global_ocean_ebm (using -ieee)
2193    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2194      of mom_common/
2195      - simple re-arrangement of instructions within computing loop
2196    checkpoint53d_pre
2197    
2198    checkpoint53c_post
2199    o new version of coupler for AIM+thSIce and Ocean models
2200     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2201     - land: change Evaporation of snow
2202     - aim with thSIce: fix bug in snow-precip.
2203    o changes to calc_gw.F
2204     - bug fix for w^2 term near the bottom boundary
2205     - (hopefully) improve the lateral slip boundary condtions for use with
2206        partial/looped cells
2207      - because the bug fix changes two verification experiments anyway (exp5
2208        and plume on slope), change the lateral boundary condition from half slip
2209        to the value of no_slip_sides
2210    o ebm package wasnt quite up to the parallel task. Fixed that.
2211    o Adjoint of EBM package + verification
2212      * TLM OK
2213      * ADM not sufficient accuracy yet (needs further testing)
2214    
2215    checkpoint53b_post
2216    o Commiting new energy balance model to repository
2217      * package is pkg/ebm
2218      * verif. is verification/global_ocean_ebm
2219      * references are in ebm_driver.F
2220    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2221    C        Global thermohaline circulation. Part I:
2222    C        Sensitivity to atmospheric moisture transport.
2223    C        J. Climate 12(1), 71-82
2224    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2225    C        Global thermohaline circulation. Part II:
2226    C        Sensitivity with interactive transport.
2227    C        J. Climate 12(1), 83-91
2228    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2229    C        Destabilization of the thermohaline circulation
2230    C        by atmospheric eddy transports.
2231    C        J. Climate 7(12), 1870-1882
2232    o Will need long integration testing.
2233    checkpoint53b_pre
2234    
2235    o created pkg/mom_common in preparation for variable viscosity code
2236    o renamed and split ini_mnc_io
2237    o pkg/land: only liquid water can diffuse or run-off
2238    o AIM using land: soil wetness availability account for snow
2239    o added printMapIncludesZeros to EEPARMS namelist
2240    
2241    checkpoint53a_post
2242    o restore TAMC compatiility for exf_constants.h
2243      (no usage of _d in .h)
2244    o Additional storing in KPP in an attempt to fix
2245      TAMC problem with adjoint of KPP code.
2246      (no success...)
2247      Identical code works fine with TAF.
2248    o Fixed verification/natl_box_adjoint experiments.
2249      Initial conditions for Experiments 4 and 5 are now
2250      set to "SEAICE_initialHEFF=0", which is more reasonable,
2251      and hence gives results closer to that of Experiment 2.
2252      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2253    
2254    checkpoint53
2255    o stable checkpoint with up to date adjoint
2256      TLM tests only run for 1st grdchk at the moment. Its unclear if
2257      this is a code problem or a problem with resetting code for g_
2258      variables that is being autogenerated wrong.
2259      Otherwise:
2260       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2261       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2262         are both still in chaos following their security messes.
2263    
2264    checkpoint52n_post
2265    o various build (mostly genmake2) changes including:
2266      - ability to build/run more easily within Cygwin and MacOS X
2267      - more complicated Makefiles with a stronger dependence on Gnu Make
2268    o pkg/seaice modifications
2269      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2270        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2271        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2272      - changed proxy for geostrophic velocity and updated
2273        verification/lab_sea/results/* accordingly
2274      - removed ADI dynamic solver from pkg/seaice
2275      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2276        they caused a segmentation fault under certain circumstances
2277      - removed unused field WATR
2278    o bug fix in exf-package:
2279      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2280         now reflect that.
2281    o small fixes in the cal-package:
2282      - set reference date to first of January for the 'model'-calendar
2283      - failing of cal_CheckDate in cal_FullDate now actually results in a
2284        warning
2285    o small modifications in exf-package to increase flexibility:
2286      - change climtempfreeze from a constant to a runtime parameter that
2287        is specified in data.exf_clim (default = -1.9)
2288      - introduce runtime parameter windstressmax (default = 2.0) that is
2289        specified in data.exf
2290    o fix in pkg/thsice:
2291      - update Evap (Tsf changes) to be consistent with Latent heat flux
2292      - maintain snow precipitation unchanged (even if Tsf >=0).
2293     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2294    
2295    checkpoint52m_post
2296    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2297      this does not change any of the results, because myIter=0 in swfrac always
2298      lead to jwtype=2 (the default anyway), but the call makes little sense
2299      as a default
2300    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2301    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2302      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2303    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2304    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2305    o extending useSingleCpuIO option to work with new exch2 I/O format
2306      - old-style, missing-tile I/O is still accessible by defining CPP
2307        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2308    o monitor package can write to NetCDF files and/or STDOUT
2309    o fix re-definition bug in MNC_GRID_INIT_ALL()
2310    o doc/api_reference added
2311      - a framework for building an API Reference Manual using all
2312        the "protex" comments embedded in the code
2313      - see pkg/generic_advdiff, pkg/mnc for examples
2314    o MNC:
2315      - make myThid the last argument for all subroutines
2316      - new default for the grid files: NO halos
2317      - add useMNC and other run-time flags
2318      - separate per-file-group handling of the unlimited dimension
2319      - early initialization of MNC w/ flags read at the eeboot stage
2320        and lookup tables set in initialize_fixed
2321      - write all MNC output to a freshly-created directory
2322    o thermodynamics sea-ice (thsice) is now tested with testreport.
2323    o test exp. advect_cs: use the standard cs32 grid ; update output.
2324    o Added functionality to grdchk:
2325      pick global i,j,k position (or nearest wet) where to perform check.
2326    
2327    checkpoint52l_post
2328    o new land formulation:
2329      a) use ground enthalpy as prognostic variable to ensure exact
2330         energy conservation.
2331      b) account for water temperature and for latent heat of freezing
2332         in all processes (rain, run-off, ground storage)
2333      c) compute surface and ground temperature implicitly.
2334    o aim_v23 modification for new land model:
2335      a) Treat separately land / ocean / sea-ice surface fluxes
2336         to allow implicit computation of land & sea-ice surface temp.
2337      b) add snow precipitation.
2338    checkpoint52l_pre
2339    
2340    o fix problem (when 1 tile is empty) in min/max monitor.
2341    o fix bug in timeAve (u,vZetatave in common block)
2342    o no restoring terms under ice for pkg/seaice
2343    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2344    o bug fix for pkg/seaice pickups
2345    o change MNC call locations and add coordinate attributes
2346    o mask vorticity at the corner ; affects global_ocean.cs output
2347    o fix ini_curvilinear_grid ; test CS experiments with mpi
2348    o aim.5l_cs: modify sea-ice fraction input file ; update output
2349    o exf: Adding simple range check routine for exf fields after read
2350    
2351    checkpoint52k_post
2352    o removed top-level directory "diags"
2353      - we migrated these functions to pkg/timeave a long time ago
2354    o fixed bug introduced in pkg/monitor
2355    o accuracy ctrlprec = 32 insuffient for gradient checks using
2356      averaged fields (I/O via cost_averages)
2357      -> use ctrl.h in active_file*.F to control I/O precision.
2358    o paramter list of CALL ADTHE_MAIN_LOOP
2359    o added initial do_the_model_io to ecco
2360    o set all ...Freq to zero after cost_final
2361      taveFreq, dumpFreq, pChkptFreq
2362    o MAIN and ECCO differentiability restored
2363    
2364    checkpoint52j_post
2365    o fix nchklev in tamc.h for global_ocean...
2366    o Bringing flow and store directives up-to-date
2367    o Really weird thing!
2368      call do_the_model_io from the_main_loop with parameters
2369      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2370      TAF places a faulty re-call of initialise_varia
2371      after cost_final call which should not be there!
2372    checkpoint52j_pre
2373    
2374    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2375      error messages
2376    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2377    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2378      debug output
2379    o modfied mdsio_writefield.F to handle non-global files under exch2
2380    o update AIM Cubed-Sphere exp (aim.5l_cs):
2381      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2382    o update AIM Equatorial Channel exp:
2383      use standard aim_v23 pkg and change the SST fields to be more realistic.
2384    o globalFile now works with exch2
2385    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2386      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2387    o limit timeave output for hi-res integrations
2388    
2389    checkpoint52i_post
2390    o removed CPP_EEOPTIONS.h from verification/*/code
2391    o updated the tiling for global_ocean_pressure
2392    checkpoint52i_pre
2393    
2394    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2395      the old pkg/aim).
2396    
2397    checkpoint52h_pre
2398    o shortened offending lines in exch2_send_rx?.template
2399    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2400    o genmake2: add build & execute test for NetCDF code
2401    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2402      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2403    o added useSingleCPUIO flag to monitor.F and mon_out.F
2404    o added temporary hack for sea-ice dynamics on the cube:
2405      metric terms are ignored and it is assumed that
2406      there is no sea-ice on cube faces 1, 2, 4, and 5.
2407    
2408    checkpoint52f_post
2409    o added exch2 cube routines to pkg/exch2
2410    o modified hs94.cs-32x32x5 to use it
2411    o added new grid files to hs94.cs-32x32x5
2412    checkpoint52f_pre
2413    
2414    checkpoint52e_post
2415    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2416      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2417    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2418      to work with implicit vertical advection and AB ;
2419    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2420    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2421     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2422    checkpoint52e_pre
2423    
2424    o fix bug in impldiff when Nr=1 or Nr=2.
2425    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2426    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2427    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2428      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2429    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2430    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2431    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2432    
2433    checkpoint52d_post
2434    o re-tiled many expts to allow comparison in multi-processor mode
2435      - updated output accordingly
2436      - changed hs94.128x64x5 to use intial T from file rather than use the
2437        random number generator
2438    o add infrastructure in model routines for fizhi and gridalt packages
2439    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2440    o changes to permit hi-res, cubed-sphere, configuration
2441      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2442      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2443      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2444        of surface winds for the cube
2445      (A verification experiment, based on global_ocean.cs32x15, but with
2446       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2447       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2448       complete with example surface forcing files and matlab scripts to look
2449       at the output and compare it with that of global_ocean.cs32x15.)
2450    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2451       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2452       to conform to the common rule.
2453    o check-in the first version of the coupler + interfaces for multi-components
2454       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2455       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2456       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2457       - ocean and atmos. share the same horizontal grid (no interpolation).
2458       - exchanges between component and coupler is done in forward_step
2459    o new verification experiment, cpl_aim+ocn:
2460       coupled ocean - AIM atmosphere on cs32 grid.
2461    
2462    checkpoint52d_pre
2463    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2464    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2465    
2466    checkpoint52c_post
2467    o Fixing OPTIONS files for use of exf:
2468      - ALLOW_ECCO not needed
2469      - ECCO_CPPOPTIONS.h should not be included from
2470        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2471        as has been the case in the past
2472      - All cal/exf related options are currently set in
2473        single header file. Should remain so until we
2474        agree on a consistent new policy.
2475    o Removed all CPP options for cal package.
2476      cal has no more CPP options.
2477    o modified STOREs in GAD_ADVECTION
2478    o corrected key comp. for passkey
2479    
2480    checkpoint52b_post
2481    o new version: "thsice" of thermodynamic sea-ice pkg:
2482     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2483     - modify fluxes but do not change theta directly;
2484     - light cleaning of bulk_force pkg (still needed with thsice).
2485     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2486       + output_thsice.txt to test thsice & bulk_force pkgs.
2487    o put back grid & coriolis monitor output.
2488    checkpoint52b_pre
2489    
2490    o call "do_the_model_io" at the beginning (=> dump initial state)
2491    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2492    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2493      (need info on NUMBER_OF_PTRACERS)
2494    o missing PTRACERS headers in some routines
2495    o default tamc.h in pkg/autodiff supposed to crash
2496      to ensure proper customization
2497    
2498    checkpoint52a_post
2499    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2500      - moved surfaceTendencyTice from pkg/seaice to main code
2501      - subroutine FREEZE_SURFACE now limits only surface temperature
2502        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2503        => new output.txt for global_ocean.cs32x15 & global_with_exf
2504      - keep the old version of FREEZE for backward compatibility;
2505        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2506      - corresponding modifs for TAF directives
2507    o added surface flux output variables to TIMEAVE_STATVARS
2508    o time-averaged output for pkg/ptracers
2509    o fix problem with ECCO-related divided adjoint
2510      snapshot file was missing some ad-variables,
2511      but no warning issued by TAF
2512    
2513    checkpoint52a_pre
2514    o some bug fixes for #undef REAL4_IS_SLOW
2515    
2516    checkpoint52 = ecco_c52_e35
2517    o after testing adjoints of checkpoint51u_post
2518    
2519    checkpoint51u_post
2520    o this is the post-merge tag of the ecco-branch
2521      (needs another clean checkout and re-testing)
2522    o various natl_box_adjoint configs and results
2523      but no input fields
2524    o obcs adjoint not yet merged!
2525    o adding ECCO global 1x1 and 2x2 degree configs
2526    o updated/extended some store directives for seaice
2527    o pkg/ecco now containes ecco-specific part of cost function
2528    o top level routines the_main_loop, forward_step
2529      supersede those in model/src/
2530      previous input data.cost now in data.ecco
2531      (new namelist ecco_cost_nml)
2532    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2533    
2534    checkpoint51t_post
2535    o this is the pre-merge tag of the ecco-branch
2536    
2537    checkpoint51s_post
2538    o cleanup: removed various obsolete #define-s
2539    o pkg/grdchk
2540      - renamed 'ph-grd 3' to 'grad-res'
2541      - merged from ecco-branch
2542        (remaining bug fixes for obcs gradient checks)
2543      - additional high-precision output for testreport
2544        (grep for 'precision_grdchk_result')
2545    
2546    checkpoint51r_post
2547    o cleaned up or removed CPP_OPTIONS.h files
2548    o updated results for some of the tests to reflect the new
2549      optfiles (-ieee: -O0 instead of -O3)
2550    
2551    checkpoint51q_post
2552    o cd_code:
2553      - moved cd_scheme.F -> cd_code_scheme.F
2554      - separate read_checkpoint from cd_code_ini_vars.F
2555      - separated cd_code part from write_checkpoint
2556      - updated AD_SOURCE, generated .flow
2557      - added CD_CODE_VARS.h to the_main_loop
2558      - Moving cd_code specific store dir.s to pkg/cd_code
2559    o ctrl package totally restructured
2560      - pack/unpack now optional and decoupled from
2561        xx_/adxx_ I/O
2562      - ctrl_pack/unpack cleaned
2563        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2564      - confined inclusion of AD_CONFIG.h to where necessary.
2565    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2566    
2567    checkpoint51p_post
2568    o create initial cd_code package
2569      - WARNING: the initialization of fields within packages
2570        is broken because INI_FIELDS (where READ_CHECKPOINT is
2571        called) is called *before* PACKAGES_INIT_VARIABLES.
2572        This seems to be backwards since
2573        1) its important to initially zero the entire field including
2574           the "halo" region
2575        2) zeroing needs to be done *before* reading pickup info
2576           and the pickup call might or might not happen in any
2577           particular run
2578      - this needs an overhaul for R2
2579    o cleanup verification/*/code/GMREDI_OPTIONS.h
2580    o cleanup testreport
2581    
2582    checkpoint51o_post
2583    o bringing AD-related verif's up to date with genmake2
2584      - carbon/
2585      - global_ocean.90x40x15/
2586      - hs.94.1x64x5/
2587      - (front_relax/ )
2588    o (more) consistent directory structure for AD-related verif.'s
2589    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2590    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2591    o bug fix in find_alpha.F for MDJWF:
2592      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2593        change rho -> rho-rhoConst
2594      - replace call find_rho to find_rhonum
2595    o initialisation of rFlx extended to full array (required by TAF)
2596      and shifted to thermodynamics
2597    o removed PTRACERS.h in ptracers routine
2598    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2599    o Correcting initialisations for fVerU, fVerV.
2600    o helping TAF to recognize dependency on kUp for
2601      fVerU, fVerV
2602    o Replacing delZ by delR in pkg/ctrl/
2603    checkpoint51o_pre
2604    
2605    o undid all of cp51 pending some cleanups and discussion
2606    o added the [#include "AD_CONFIG.h"] statement to all files that need
2607       it for adjoint/tl #defines
2608     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2609     o removed tools/genmake since it no longer works
2610    
2611    checkpoint51n_post
2612    o modifications to make FREEZE flux visible to pkg/kpp
2613      - moved surfaceTendencyTice from pkg/seaice to main code
2614      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2615      - subroutine FREEZE now limits only surface temperature
2616        (this means new output.txt for global_ocean.90x40x15,
2617         global_ocean.cs32x15, and global_with_exf)
2618    o added surface flux output variables to TIMEAVE_STATVARS
2619    
2620    checkpoint51n_pre
2621    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2622    o added [#include "AD_CONFIG.h"] to all files that use the following
2623      defines:
2624      - ALLOW_ADJOINT_RUN
2625      - ALLOW_TANGENTLINEAR_RUN
2626      - ALLOW_ECCO_OPTIMIZATION
2627    
2628    checkpoint51m_post
2629    o incorporating changes to get TAMC/TAF working in genmake2
2630      - added new TAMC/TAF targets to the Makefile
2631      - various cleanups related to package handling
2632      - these changes should have no impact on the forward model
2633    
2634    checkpoint51l_post
2635    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2636     - faster algorithm for cal_addtime.F
2637     - higher precision arithmetic, where needed
2638     - pkg/exf *startdate variables changed from calendar date to
2639       model integration time
2640    
2641    checkpoint51l_pre
2642    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2643    o enable to apply restoring on S & T only in a latitude band.
2644    o update output (external_forcing_surf modif. change truncation errors)
2645       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2646    
2647    checkpoint51k_post
2648    o change default to: useNHMTerms=.FALSE.
2649     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2650       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2651     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2652        exp1, ideal_2D_oce
2653     - change data file of oceanic exp (leave the results unchanged for now)
2654       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2655    o set gravitySign automatically according to the vertical coordinate used
2656      (and change sign: back to "logical" value: +1 when R increases downward)
2657    o added an include barrier to the default CPP_OPTIONS.h and
2658      removed the #include "PACKAGES_CONFIG.h" from it
2659    o fix a bug in mom_fluxform (from chk51j_post)
2660    
2661    checkpoint51j_post
2662    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2663    o adjusted some flow directives (dynamics, thermodynamics)
2664    o added cubed-sphere case to test cost function
2665    o heckpoint_lev?_directives.h now include
2666      pkg-specific directives, whenever those are enabled.
2667    o Moving pkg-specific flow directives to corresponding pkg
2668      Moving pkg-specific differentiation list to corresponding pkg
2669      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2670      ---> conventions are
2671           - pkg_ad.flow
2672           - pkg_ad_diff.list
2673           - pkg_ad_check_lev?_dir.h
2674    
2675    checkpoint51i_post
2676    o merge of the branch-genmake2
2677      - knowingly breaks the older genmake
2678      - automatic generation of all ALLOW_${PKG_NAME} defines
2679      - new testreport supersedes older testscript
2680    o large number of package inclusion and header cleanups
2681    checkpoint51i_pre
2682    
2683    o new output for adjoin of global ocean vector invariant
2684    o fix for checkpoint of thermodynamic seaice and bulk_force
2685    o Steph gchem various cleanups
2686    
2687    checkpoint 51h_pre
2688    o fixed some single quotes
2689    o modify gchem pkg to be more versatile
2690    o modifications to clean up dic pkg
2691    o add pkg/cfc
2692    
2693    checkpoint51g_post
2694    o provide links for ARPACK and ADM*TLM
2695    o start removing verification/vero/
2696    o update AD-related stuff
2697      (in particular some IF-statements in model/src/ routines)
2698    o adding to verification/global_ocean.90x40x15/ adjoint of
2699      vector invariant setup
2700    
2701    checkpoint51f_post
2702    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2703    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2704      of tracer Green's fucntions for ocean inversion project.
2705    
2706    checkpoint51f_pre
2707    o Added on-the-fly spatial interpolation capability
2708        "USE_EXF_INTERPOLATION" to pkg/exf.
2709      - This is a temporary Cartesian-grid hack until
2710        the super-duper ESMF coupler becomes available.
2711      - See verification/global_with_exf/README for usage example.
2712      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2713        flags and modified pkg/seaice accordingly.
2714    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2715        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2716        non-local transport term.
2717    
2718    checkpoint51e_post
2719    o pkg/mom_vecinv:
2720      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2721      - add time-ave diagnostic of vorticity advection.
2722    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2723    o atmospheric geopotential: - include water vapor effect;
2724                                - use p^kappa in p* scaling.
2725    o land pkg: read initial state from files.
2726    o AIM : add stratospheric drag in the upper level
2727    
2728    checkpoint51d_post
2729    o change function ILNBLNK (=> last non-blank char.) to return zero
2730      (instead of the string length) when the string. char is empty
2731    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2732    o modif's to restore TAMC compatibility
2733      - avoid "_d" constructs in PARAMETER declarations
2734      - avoid interrupting lines by comment lines
2735    o Use cluster local disks for purely local I/O
2736      vs. globally visible disks needed for ctrl stuff
2737      (merged from ecco-branch)
2738      - new active_file_loc... and mdsio_..._loc routines
2739      - affected packages: autodiff, ctrl, grdchk, mdsio
2740    
2741    checkpoint51c_post
2742    o introducing integer flag debugLevel
2743      - debLevZero: suppress all output
2744      - debLevA: standard
2745      - debLevB: equivalent to current debugMode=.TRUE.
2746    o introducing pathname variable mdsioLocalDir for mdsio
2747      that can be specified at runtime
2748      (relevant for cluster I/O to local disk)
2749    `
2750    >>>checkpoint51b_post
2751    adjoint of ptracers
2752    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2753    o extended state in checkpoint_lev?, etc.
2754    o alternative ctrl/cost with tr1 or ptracer
2755    o new comlev1_bibj_ptracers
2756    o new ptracers.flow
2757    o made ptracers_forcing same as external_forcing_s
2758    o added verification for adjoint with ptracers
2759      - adm. grdchk fail so far
2760      - tlm. grdchk OK
2761      - checked tapelev/comlev recomputations: OK
2762    <<<checkpoint51b_pre
2763    
2764    checkpoint51a_post
2765    o added code for biogeochemistry package
2766      - new pkgs: dic, gchem
2767      - new subroutine in ptracers
2768    o modify code for biogeo packages
2769      - in model/src and pkg/ptracers
2770    
2771    checkpoint51
2772    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2773      - autodiff, ctrl, exf, grdchk, seaice
2774      kept separate packages
2775      - cost, ecco, obcs
2776    o updating verification/internal_wave, verification/lab_sea
2777      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2778    
2779    checkpoint50i_post
2780    o Preparing next differentiable checkpoint and sync
2781      of MAIN vs. ecco-branch
2782      - 1st step: this one is differentiable
2783      - 2nd step: next(! not this) checkpoint will have updated packages
2784                  from ecco-branch)
2785    
2786    checkpoint50h_post
2787    o new package "land": provide surface BC for AIM.
2788    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2789    o AIM: use true log-P extrapolation for near surface temp (= as in
2790        F.Molteni paper) ; update aim.5l_cs output.
2791    o New variable in PARM03 for more flexible pickups
2792    o somewhat cleaned package initialisation sequence for
2793      ctrl/ cost/ ecco/ in packages_... routines
2794    
2795    checkpoint50g_post
2796    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2797      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2798      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2799        made the default because of faster convergence than ADI
2800    
2801    checkpoint50f_post
2802    o exf totally restructured
2803      - replaced all exf_set_ routines by one generic exf_set_gen.F
2804        and made sure it's still differentiable
2805      - split exf_getffields.F into new exf_bulkformulae.F
2806      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2807      - updated adjoint/makefile and relevant verif. accordingly
2808    
2809    checkpoint50f_pre
2810     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2811          + change Evap over land. (update aim.5l_cs output)
2812     o added missing .cvsignores and made uniform across expts
2813     o changed configuration of tidal_basin_2d expt
2814     o added pkg/debug functions for tracing code in fatal crashes
2815     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2816     o new fn in pkg/monitor to stop model if solution grows too big
2817     o removed lots of single quotes from comments
2818    
2819    checkpoint50e_post
2820    o make KPP work with PTRACERS
2821     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2822       nearly a copy of kpp_transport_s
2823     - there is no analogue to SurfaceTendencyS, so I have to use
2824       gPtr(of the surface layer) instead
2825    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2826    checkpoint50e_pre
2827    
2828    checkpoint50d_post
2829    o change kpp output from multiple-record state files to single-record state
2830      files analogous to write_state.F
2831    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2832      analogous to the cg2d-related output.
2833    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2834      so that writing to internal file fn (with length 512) fails.
2835    checkpoint50d_pre
2836    
2837    checkpoint50c_post
2838    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2839    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2840    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2841    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2842    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2843    
2844    checkpoint50c_pre
2845    Merging from release1_p13:
2846    o bug fix for pkg/seaice dynamic solver
2847    o Added SEAICE_initialHEFF to pkg/seaice
2848    
2849    checkpoint50b_post
2850    o store u*,v* in gU,V instead of in guNm1,gvNm1
2851    o in order to put the momForcing out of the Adams-Bashforth:
2852      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2853      to timestep.F
2854    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2855    o re-generate output for highly sensitive test-exp:
2856       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2857    
2858    checkpoint50b_pre
2859    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2860    o corrected CPP option mismatch in exf_Bulk... functions for case
2861      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2862    
2863    checkpoint50a_post
2864    o Bug fix for merging between c50 and KPP.
2865      ikey was passed from thermodynamics to kpp_calc via
2866      common block rather than being recomputed in kpp_calc,
2867      in contradiction with new key itdkey.
2868      New key ikppkey created, and tamc.h headers updated.
2869    
2870    checkpoint50
2871    - 2nd step of merge with ecco-branch:
2872      merge changes in ecco-branch back into main trunk
2873    - bug fix in find_alpha
2874    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2875    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2876    - merged some sliced AD support routines
2877    
2878    checkpoint49
2879    merged from ecco-branch:
2880    o exf:
2881      - Enable initialisation of forcing fields to constant
2882        (runtime) values.
2883      - in exf_getffields.F
2884        Reduce i-/j-loop to interior domain, discarding overlaps.
2885        That also fixes wrong TAF-key computations for key_1, key_2
2886        with bulf formulae.
2887      - exf_init.F modify #ifdef for exf_init_evap
2888      - exf_getffieldrec.F, ctrl_getrec.F
2889        The following INT-usages are not safe:
2890          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2891          fldcount = int(fldsecs/fldperiod) + 1
2892        and were modified.
2893    o autodiff: checkpoint_lev...
2894      - updated storing for bulk formulae (some arrays were missing)
2895      - added state for seaice package
2896      - synchronized with main branch
2897    o DIVA:
2898      Modif.s in
2899      - the_main_loop.F
2900      - the_model_main.F
2901      and added cost_final_restore.F cost_final_store.F
2902      o With these changes, it is possible to fully separate
2903        the first forward run to compute the cost function (mdthe_main_loop)
2904        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2905        into separate model executions.
2906        This enables better tuning of DIVA to given queue sizes.
2907      o Loss of cost function value in consecutive DIVA runs is
2908        fixed by storing to 'costfinal' file.
2909      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2910        beginning/end of adjoint integration is accounted for.
2911      The current changes apply to TAF-1.4.26.
2912      TAF has one remaining bug, requiring one manual change
2913      (see MITgcm manual).
2914    o cal: synchronized between MAIN and ecco-branch
2915    
2916    checkpoint48i_post
2917    o Changes to restore differentiability of code w.r.t. previous tag
2918      (mostly adding new routines to make list and replacing
2919      pressure by totPhiHyd).
2920    o Updated and merged grdchk package
2921      - has both ADM and TLM checks
2922      - works for single- and multi-proc.
2923      - output cleaned
2924      - worked successfully for parallel DIVA
2925    o genmake:
2926      - Adding -platform=SP4
2927      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2928    o Modif. for DIVA:
2929      ctrl_unpack should not be called in intermediate DIVA interval.
2930      (similar thing would apply for active files such as
2931      tbar, sbar, psbar, which should not be reinitialised;
2932      only relevant for ecco-branch)
2933    
2934    checkpoint48h_post
2935    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2936    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2937    o Added SEAICE_initialHEFF to pkg/seaice
2938    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2939    
2940    checkpoint48g_post
2941    --- EOS:
2942    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2943      store total Potential in totPhyHyd for diagnostics & EOS.
2944    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2945    --- Pressure/geopotential gradient:
2946    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2947    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2948      ( changes results of global_ocean_pressure )
2949    o NLFS + z-coord.: add eta*Rho' contribution.
2950    o accurate phiHyd when using interface-W at the middle between 2 centers
2951     ( changes results of ideal_2D_oce )
2952    o includes r* 2nd term in potential gradient.
2953    
2954    checkpoint48f_post
2955    Merging from release1_p12:
2956    o Modifications for using pkg/exf with pkg/seaice
2957      - improved description of the various forcing configurations
2958      - added basic radiation bulk formulae to pkg/exf
2959      - units/sign fix for evap computation in exf_getffields.F
2960      - updated verification/global_with_exf/results/output.txt
2961    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2962      (SBO) core products, including oceanic mass, center-of-mass,
2963      angular, and bottom pressure (see pkg/sbo/README.sbo).
2964    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2965      to avoid negative values in shallow regions.
2966      - updated verification/natl_box/results/output.txt
2967      - updated verification/lab_sea/results/output.txt
2968    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2969    o Added useSingleCpuIO option (see PARAMS.h).
2970    o Updated useSingleCpuIO option in mdsio_writefield.F to
2971      work with multi-field files, e.g., for single-file pickup.
2972    o pkg/seaice:
2973      - bug fix in growth.F: QNET for no shortwave case
2974      - added HeffFile for specifying initial sea-ice thickness
2975      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2976    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2977      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2978    o pkg/seaice:
2979      - adjoint-friendly modifications
2980      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2981    
2982    checkpoint48e_post
2983    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2984    o dynamics: change definition of computational domain & adapt mom_fluxform
2985      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2986    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2987        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2988        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2989        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2990        inverted_barometer solid-body.cs-32x32x1
2991      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2992    
2993    checkpoint48d_post
2994    o in preparation for r*:
2995     a) use pre-computed gradient of hydrostatic potential:
2996        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2997     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2998        => affects results of glob_oce_pressure (different truncation error)  
2999      update output.txt of ideal_2D_oce & global_ocean_pressure
3000    
3001    checkpoint48d_pre
3002    o in preparation for r*:
3003      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3004      pass the 2 comp. of the grad. as arguments to momentum S/R.
3005      but for the moment, only used if it does not change the results.
3006    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3007    
3008    checkpoint48c_post
3009    Modifications in treatment of initial flux forcing controls
3010    to avoid extra storing of flux fields.
3011    
3012    checkpoint48c_pre
3013    o Added tidal_basin_2d experiment (currently 1D!)
3014    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3015    
3016    checkpoint48b_post
3017    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3018     (modification to pressure gradient not yet implemented)
3019    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3020      (for U & V) that are used for vertical advection of momentum.
3021    
3022    checkpoint48a_post
3023    o In preparation for r*, use temp. array to compute vertical transport
3024       in flux-form momentum pkg. => change results of few test-exp.
3025      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3026                        lab_sea, natl_box & plume_on_slope
3027    
3028    checkpoint48
3029    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3030    
3031    checkpoint47j_post
3032    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3033    o moved adexch from forward_step to addummy_in_stepping
3034    o added exch in ctrl_map_...
3035    o aveFreq.=0. at end of cost_final to avoid overwrite in
3036      reverse checkpointing loop
3037    o Yet more changes in gmredi:
3038      * adgmredi_calc_tensor
3039        avoiding all recomputation of gmredi_slope_limit
3040      * adgmredi_x/y/rtransport
3041        added flag for excessive storing to avoid recomp. of
3042        u/v/rtans, dTdx/y/z
3043        -> this is not really necessary and very memory-consuming
3044      * adgmredi_slope_psi:
3045        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3046      * gmredi_slope_limit
3047        re-activated full calculation of taperfct for case 'ac02'
3048    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3049    
3050    checkpoint47i_post
3051    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3052    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3053      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3054    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3055    o gmredi: fix few bugs.
3056    
3057    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3058    This will be a good checkpoint to plug into the ecco-branch.
3059    o few modif.'s to get latest version adjointed
3060      (mainly kick out code in ini_linear_phisurf)
3061    o modif's to run adjoint with exactConserv
3062    o case GM_BOLUS_ADVEC should be cleaned
3063      S/R gmredi_slope_psi should be cleaned
3064    o verification/carbon now has exactConserv=.TRUE.
3065    
3066    checkpoint47g_post
3067    o time-average AIM output: becomes independent from statvars time-average
3068      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3069    o After TAF bug fix:
3070      Tested adjoint of gmredi package.
3071      Tests were done with checkpoint47 rather than with latest
3072      checkpoint47f_post since the latter is broken for the adjoint
3073      verification/carbon/ contains both ADM and TLM gradient checks.
3074    Here they are, before they get changed/lost/stolen.
3075    Mostly modif.'s to fix numerical sensitivities.
3076    Gradient checks OK for
3077    - GM_taper_scheme:
3078      * clipping
3079      * ac02
3080      * linear
3081      * glw91
3082      * dm95
3083      * ldd97
3084    - GMREDI_OPTIONS:
3085      * GM_VISBECK_VARIABLE_K
3086      * GM_NON_UNITY_DIAGONAL
3087      * GM_EXTRA_DIAGONAL
3088      * GM_BOLUS_ADVEC
3089    in conjunction with data.gmredi parameters to be checked in
3090    in a few minutes under verification/carbon/code/
3091    
3092    checkpoint47f_post
3093    Merging from release1_p10:
3094    o modifications for using pkg/exf with pkg/seaice
3095      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3096        and SEAICE_EXTERNAL_FLUXES
3097      - pkg/exf CPP options EXF_READ_EVAP and
3098        EXF_NO_BULK_COMPUTATIONS
3099      - usage examples are Experiments 8 and 9 in
3100        verification/lab_sea/README
3101      - verification/lab_sea default experiment now uses
3102        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3103    
3104    checkpoint47e_post
3105    o created a tag prior to creating a branch
3106    
3107    checkpoint47d_post
3108    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3109      at the bottom boundary had an erroneous half slip boundary condition
3110    o added bottom drag and no slip boundary condition capabilities to
3111      oceanic pressure coordinates code
3112    o added new verification experiment global_ocean_pressure, this experiment is
3113      also described in the tutorial section of the manual
3114    checkpoint47d_pre
3115    
3116    checkpoint47c_post
3117    o Added a verification experiment for a global cubed-sphere ocean run
3118      -  verification/global_ocean.cubed32x32x30
3119      -  uses pkg/therm_seaice and pkg/bulk_forcing
3120    
3121    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3122    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3123      when using P-coordinate; only implemented for atmospheric config.
3124    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3125      NOTES: requires option NONLIN_FRSURF to be "#define".
3126    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3127    
3128    checkpoint47b_post
3129    Merging from release1_p9:
3130    o pkg/seaice
3131      - removed GOTO's and added taf directives
3132      - double precision constants to reduce the g77 (Linux)
3133        to F77 (SGI) differences reported in release1_p8
3134    o tools/genmake
3135      - added SGI options
3136    o verification/testscript
3137      - updated to that of checkpoint47a_post
3138    o verification/global_ocean.90x40x15/input/eedata
3139      - modified for SGI f77 compatibility
3140    o verification/lab_sea
3141      - added description of sea-ice model
3142      - added missing matlab routines
3143      - added test of thermodynamics parallelization
3144    
3145    checkpoint47a_post
3146    o new pkg: aim_v23
3147     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3148       for now, keep the same surface forcing as before.
3149     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3150     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3151     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3152    o add diagnostic of surface correction term in monitor output
3153    
3154    o bulk_force and therm_seaice
3155    - Two packages:  bulk_force (Bulk forcing)
3156      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3157    - Earlier integration from Stephaine Dutkiewicz
3158      and Patrick Heimbach.
3159    - Two ifdef statements for compile time,
3160       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3161    
3162    checkpoint47
3163    differentiable version of checkpoint46n_post
3164    o bug fix in quasihydrostaticterms
3165    o * "clean" adjoint code (in terms of extensive recomputations)
3166        can now be obtained for all GMREDI options (i.e. for
3167        - GM_VISBECK_VARIABLE_K
3168        - GM_NON_UNITY_DIAGONAL
3169        - GM_EXTRA_DIAGONAL
3170        - GM_BOLUS_ADVEC )
3171      * However, wrong gradient check problem remains unsolved.
3172      * New CPP options have been introduced for different
3173        tapering schemes
3174    o external_fields_load now part of differentiation list
3175    o pressure needs multiple storing;
3176      would be nice to have store_pressure at beginning or
3177      end of forward_step, e.g. by having phiHyd global (5-dim.)
3178      (NB: pressure is needed for certain cases in find_rho,
3179      which is also invoked through convective_adjustment).
3180    o recomputations in find_rho for cases
3181     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3182    o #define ATMOSPHERIC_LOADING should be differentiable
3183    o ini_forcing shifted to begining of initialise_varia
3184    o Incorporating QNVS line search routines into MITgcm
3185      (this is separate code, and therefore not under pkg)
3186      lsopt/, optim/
3187    o Updated verification/carbon/
3188      - #define GM_VISBECK_VARIABLE_K
3189      - GM_taper_scheme    = 'ldd97'    
3190    
3191    checkpoint46n_post
3192    Merging from release1_p8:
3193    o verification/natl_box:
3194      updating new external_fields_load routine
3195    o New package: pkg/seaice
3196      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3197      The sea-ice code is based on Hibler (1979-1980).
3198      Two sea-ice dynamic solvers, ADI and LSR, are included.
3199      In addition to computing prognostic sea-ice variables and diagnosing
3200      the forcing/external data fields that drive the ocean model,
3201      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3202      The implied surface heat flux is then stored in variable
3203      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3204      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3205      non-local transport term.  Because this call precedes model
3206      thermodynamics, temperature under sea-ice may not be "exactly" at
3207      the freezing point by the time theta is dumped or time-averaged.
3208      N.B.: fairly large differences in accuracy occur across
3209            different platforms/compilers; comparison between
3210            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3211            generated output gives:
3212       T           S           U           V
3213      C D M    c        m  s        m  s        m  s        m  s
3214      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3215      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3216      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3217    
3218      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3219    o GAD:
3220      - generated new common blocks to account for call of
3221        same gad routines with differing traceridentities
3222        (needed to modify tracerIdentity indices in GAD.h)
3223      - generated separate common blocks for case useCubedSphereExchange
3224        (Department of Futurology)
3225      - parameter lists to gmredi_?transport: added tracerIdentity
3226      - added new key indices to tamc.h
3227    o external_fields_load:
3228      - added this routine to TAF list
3229      - needed to make some common blocks global and additional storing
3230        along the same lines as exf package (checkpoint_lev?_directives.h)
3231    o exf:
3232      updated external forcing package
3233      - bug fixes carried over from ecco-branch
3234        (missing OBCS_OPTIONS.h in two routines)
3235      - enable easy to use "no forcing".
3236      - added exf I/O for atmospheric loading
3237      - added exf I/O for runoff data
3238      - transfered scaling between exf <-> MITgcm to exf namelist
3239    o Adding new verification experiment global_with_exf.
3240      This verification experiment is almost identical to the
3241      global_ocean.90x40x15 experiment, except that it uses
3242      the exf (and cal) package instead of the
3243      external_fields_load routine (cf README file).
3244    
3245    checkpoint46m_post
3246    o modified testscript to return -- when there are no lines of "%MON" output
3247    o added new flag "quasiHydrostatic" for QH mode
3248      and new routine quasihydrostaticterms()
3249    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3250      New routine: mom_u_coriolis_nh()
3251    o fixed sign of non-hydrostatic metric terms in u and v equations.
3252      Depend on correct sign of gravitySign.
3253    o added work.pc* to .cvsignore in aim directories using ifc
3254    o introduced flag for controllin non-hydrostatic metric terms
3255    o removed gravitySign from PARM04
3256    o switched to g77/ifc from pgf77 in aim experiments
3257    
3258    checkpoint46l_post
3259    o made convective adjustment work with pressure coordinates:
3260     - changed the direction of k-loop in convective_adjustment.F for the
3261       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3262     - adjusted the reference pressure k-index in convective_adjustment.F
3263     - adjusted the convection condition in convect.F (in analogy to
3264       calc_ivdc.F)
3265     - convective_adjustment no longer computes anything on the halos
3266     - removed the warnings about negative salinity from find_rho.F and
3267       find_alpha.F; instead the new routine look_for_neg_salinity, called
3268       at the beginning of find_rho, find_alpha, and find_beta, does a
3269       check of the entire slice, if CPP-option
3270       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3271    checkpoint46l_pre
3272    
3273    checkpoint46k_post
3274    o fixed the verification/global_ocean.90x40x15 experiment:
3275     - new bathymetry (the world according to A., JMC, and M.)
3276     - new initial fields and forcing fields (*.bin files)
3277     - new POLY3.COEFFS (for the next release one should switch to a full
3278       equation of state: JMD95P or MDJWF)
3279     - fixed several errors and redundancies in the data file
3280     - experiment uses looped cells
3281     - added matlab directory with diagnostic scripts for plotting of output
3282    
3283    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3284     - read AIM physics parameters from a file (data.aimphys)
3285     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3286    
3287    checkpoint46j_post
3288    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3289    o move wVel computation at the end of the time step, in S/R integr_continuity
3290    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3291    o update timeave pkg for wVel diagnostic.
3292    checkpoint46j_pre
3293    
3294    checkpoint46i_post
3295    o Clean up AIM package (and keep the results unchanged):
3296      include CPP_OPTION and use IMPLICT NONE in all routines ;
3297      declare all the variables _RL ; use _d 0 for all numerical constants.
3298      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3299    
3300    checkpoint46h_post
3301    o cleaned up the use of rhoNil and rhoConst.
3302      - rhoNil should only appear in the LINEAR equation of state, everywhere
3303        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3304        and the dynamical equations are all divided by rhoConst
3305    o introduced new parameter rhoConstFresh, a reference density of fresh
3306      water, to remove the fresh water flux's dependence on rhoNil. The default
3307      value is 999.8 kg/m^3
3308    o cleanup up external_forcing.F and external_forcing_surf.F
3309      - can now be used by both OCEANIC and OCEANICP
3310    checkpoint46h_pre
3311    
3312     Added code to convert surface volume flux (fresh water) into
3313     a mass flux when using P coordinates in the ocean (OCEANICP).
3314     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3315    
3316    checkpoint46g_post
3317    o Include a new diagnostic variable phiHydLow for the ocean model
3318      - in z-coordinates, it is the bottom pressure anomaly
3319      - in p-coordinates, it is the sea surface elevation
3320      - in both cases, these variable have global drift, reflecting the mass
3321        drift in z-coordinates and the volume drift in p-coordinates
3322      - included time averaging for phiHydLow, be aware of the drift!
3323    o depth-dependent computation of Bo_surf for pressure coordinates
3324      in the ocean (buoyancyRelation='OCEANICP')
3325      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3326        Theta, Salinity, and Pressure in the parameter list. This routine is
3327        presently contained in find_rho.F. This routine does not give the
3328        correct density for 'POLY3', which would be a z-dependent reference
3329        density.
3330    o cleaned up find_rho
3331      - removed obsolete 'eqn' from the parameter list.
3332    o added two new verification experiments: gop and goz
3333      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3334    checkpoint46g_pre
3335    
3336    checkpoint46f_post
3337    o Enable tangent linear (forward mode) gradient checks:
3338      - extended active file handling to g_... files
3339      - added TANGENT_SIMULATION to theSimulationMode
3340      - extended grdchk package accordingly
3341    o added tangent linear setup in verification/carbon/code_ftl
3342    o added adjoint setup in verification/front_relax/code_ad
3343    
3344    checkpoint46e_post
3345    o Added new equation of state -> MDJWF
3346      - EOS of McDougall et al., 2002, JAOT, submitted
3347      - caveat: the equation of state is only valid for a smaller (more
3348        realistic?) range of values than JMD95P/Z and UNESCO
3349      - added masks to the calculation of pressure in store_pressure
3350      - added more check values for density in check_eos (ini_eos.F), some of
3351        the old check values are out of the range of the MDJWF-eos, so don't
3352        expect perfect matches for those
3353    checkpoint46e_pre
3354    
3355    checkpoint46d_post
3356    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3357      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3358      case of pressure coordinates. eosType='JMD95Z' in
3359      combination with buoyancyRelation='OCEANICP' now causes an error.
3360    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3361      in find_alpha/beta.
3362    checkpoint46d_pre
3363    
3364    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3365      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3366    
3367    checkpoint46c_post
3368    o Changes necessary for ocean in p-coordinates
3369     -  Added new buoyancy relation = 'OCEANICP'
3370     -  Added new parameters = gravitySign (this used to be contained inside
3371        the factor dRdZ which I added when we first switched to R coordinates).
3372     X GM/Redi is not compatible (yet)
3373     X bottom drag and no-slip need to be debugged.
3374    checkpoint46c_pre
3375    
3376    checkpoint46b_post
3377    o Added new equation of state -> JMD95Z and JMD95P
3378      - EOS of Jackett and McDougall, 1995, JAOT
3379      - moved all EOS parameters into EOS.h
3380      - new routines ini_eos.F, store_pressure.F
3381    o Added UNESCO EOS, but not recommended because it requires
3382      in-situ temperature (see JMD95)
3383    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3384      unesco.f to be used with POLY3
3385    checkpoint46b_pre
3386    
3387    checkpoint46a_post
3388    o Added (atmospheric) pressure loading
3389      - new field in FFIELDS.h, etc...
3390      - new cpp flag ATMOSPHERIC_LOADING
3391    o Changed hFacC to _hFacC in calc_phi_hyd.F
3392    o Added SHORTWAVE_HEATING to some files for consistency
3393    checkpoint46a_pre
3394    
3395    checkpoint46
3396    further merges from release1_p5
3397    o new ctrl package
3398      - adopted from ECCO environment to enable optimization
3399      - added Eliassen Palm fluxes to controls
3400    o added Eliassen Palm flux controls to gradient check package
3401    o cost package
3402      - Compatible with new ctrl package
3403      - added Eliassen Palm cost hooks
3404      - modif's of existing cost functions
3405    o Adjoint-related bug fixes in kpp:
3406      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3407      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3408    o autodiff package
3409      - flow directives:
3410        + new for S/R do_the_model_io
3411        + enhanced for S/R checkpoint
3412        + new gmredi.flow
3413      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3414        disable adcommon.h/g_common.h by default.
3415      - fixed problem for adjoint of global_max
3416    o modified verification/carbon/
3417    o New setup for adjoint of global_ocean
3418    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3419    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3420    o incorporated hooks for sponge layer code (external_forcing.F)
3421    
3422    checkpoint45d_post
3423    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3424  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3425    (affects plume_on_slope "cg2d" output)    (affects plume_on_slope "cg2d" output)
3426    o add new parameter deltaTfreesurf for free-surface time stepping
3427    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3428  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3429  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
3430  o add new flags:  o add new flags:

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