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revision 1.75 by jmc, Thu Jun 20 23:52:03 2002 UTC revision 1.426 by dimitri, Wed Dec 22 00:49:36 2004 UTC
# Line 2  $Header$ Line 2  $Header$
2    
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o pkg/seaice: some test code for ice-modified ocean stress
7    o exf_getffields interpolation defaults to bilinear for all scalar forcing
8      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
9      spurious negative numbers for precipitation and humidity.  Will cause
10      some small numerical differences for integrations using pkg/exf/exf_interp.F.
11    
12    checkpoint57b_post
13    o simplify options in diagnostics_fill arguments (remove weird combinations)
14    o fix MNC coordinate variables so that they now contain per-face index
15      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
16      general, EXCH2 grids are only aligned to a "local" coordinate system
17    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
18    o Implement instantaneous output within pkg diagnostics:
19      setting a negative frequency in data.diagnostics produces
20     "snap-shot" output (as opposed to time-average if freq > 0)
21    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
22      NOTE: change ptracer diagnostics name: use 2 characters to work with
23            more than 9 tracers. Add also diagnostics of advect & diffus flux.
24    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
25      becomes the coordinate variable for the 'T' dimension
26    o add CF-style coordinate variables to MNC
27      - just a first cut:  numbers are meaningless on the cubesphere and
28        missing along the T axis but otherwise it works!
29    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
30    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
31    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
32      this is based directly on what the model compute, so that the content of
33      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
34    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
35    o clean up build options files for SunOS, in particular
36      - remove -traditional from xmakedepend
37      - change -xarch=v9 to -xarch=native for f77
38      - restore use of make (not gmake)
39      - add CC=gcc if using g77
40    o changes per discussion of AM, JMC, & EH3 today:
41      - move redundant "grid" variables out of "state" -- in preparation of
42        creating proper CF-style coordinate variables and in recognition
43        that any/all grid variables can be easily copied (eg. w/NCO) from
44        the grid files into any of the other NetCDF files
45      - *always* output grid variables with MDSIO (this will eventually be
46        changed)
47      - output MNC grid file if useMNC is true
48    o every instance of _END_MASTER() has been found and replaced with
49      _END_MASTER( myThid ) in order to satisfy certain picky Sun
50      preprocessors
51    o re-arrange diagnostics pkg initialisation:
52     - allow each package to extend the available diagnostics list
53     - add some checking and fix small problems (multi-threaded, ...)
54     - new S/R diagnostics_fill (replace fill_diagnostics):
55       look through the short list of active diag. (instead of the long list)
56       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
57    
58    checkpoint57a_post
59    o this set of changes restores TAMC compatibility
60      tested for global_ocean.90x40x15 adjoint on trough
61      (what a pain)
62    
63    checkpoint57a_pre
64    o some modifs in tools/build_options for sunos
65    o call ctrl_pack for ctrl at end for optimcycle=0
66    
67    checkpoint57
68    o add horizontal bi-harmonic viscosity for vertical velocity
69      - new parameter viscA4W (defaults to viscA4)
70      - affects only non-hydrostatic code
71      - to be done: no-slip lateral boundary conditions
72    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
73    o implement Implicit Vertical advection for pTracers
74    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
75      (implemented also for implicit vertical diffusion & advection)
76    o OBCS: extend application of tracer open boundary conditions
77      to a strip beyond the boundary of width Olx/Oly
78    o add call monitor to TAF set of required calls (flow directives)
79      and include in natl_box_adjoint
80    o untangle a few ifdefs related to cost, ctrl, autodiff
81      untangel a few ALLOW_ECCO_OPTIMIZATION
82    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
83      (theta2, salt2 in ecco_cost_weights)
84    
85    checkpoint56c_post
86    o OBCS as control variables
87      - update ctrl_ad_diff.list, obcs_ad_diff.list
88      - remove balance of obcs controls from default
89      - fix index bug nobcs in ctrl_init
90      - fix dummy fields filen in ctrl_pack
91      - add dummy weights for obcs
92    o lsopt: comment out fort.94 output
93    o optim:
94      - remove unnecessary header files
95      - adjusted namelists
96      - add xerbla.F to Makefile
97    o exf:
98      - multiple modifications of exf_check_range
99      - unit change in exf_init_runoff from [m/year] to [m/s]
100    o mdsio:
101      - i/o-vector change debugLevel from debLevA to debLevB
102    
103    checkpoint56b_post
104    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
105      is called from DO_THE_MODEL_IO
106      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
107      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
108      - clean up PTRACERS_WRITE_TIMEAVE a little
109    o add another verification experiment that tests both the cfc-pkg and
110      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
111      reactive tendencies treated inline with regular timestepping
112    o testreport previously did a lousy job of comparing small numbers, so
113      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
114      implemented in the little c-progam tmp_cmpnum.c which is embedded in
115      testreport.
116    o ptracers_monitor: bug fix for MPI
117    
118    checkpoint56a_post
119    o GCHEM: finish reorganizating the package
120      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
121        (introduces another 3D-array for each passive tracer, but only if
122        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
123        gchemTendency is not needed because the timestep is done separately)
124      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
125      - GCHEM is now---more or less cleanly---separate from PTRACERS
126      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
127        so clear to me how that should be done in a general way.
128    o CFC: improve formatting of output in CFC_ATMOS
129    o PTRACERS:
130      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
131        that ALL experiments with ptracers enable can be checked. This makes
132        GCHEM_MONITOR obsolete.
133      - include a runtime parameter PTRACERS_monitorFreq that defaults to
134        monitorFreq
135      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
136    o add PTRACERS (PTR0[1-5]) to testreport output
137    o exf_check_range:
138      * default changed to .TRUE.
139      * will check values for niter0 if debLevA, every timestep if debLevB
140      * STOP in exf_check_range if 'out of range'
141      * range chosen generous to allow for potential extema
142      TBD: a version with stricter range
143           permitted range would be runtime parameters
144    o GMredi:
145      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
146      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
147      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
148    o GCHEM:
149      - move call to GCHEM_FORCING_SEP, so that it is now called before
150        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
151      - introduced a useGCHEM runtime flag and applied it everywhere.
152      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
153        this flag is now only visible within GCHEM-pkg routines.
154      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
155        be replaced by a 3D array that is computed before thermodynamics; for
156        this, the tracer ID iTracer had to be included into the parameter list
157        of ptracers_forcing
158      - set up forward_step to call gchem_forcing, that will replace
159        gchem_forcing_int in ptracers_forcing
160      - cleaning up
161    o small cleaning of exch2: remove files that are also in eesupp/src
162    
163    checkpoint56
164    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
165    o mnc: cleanup "full" files--fixes out-of-memory problem
166    o ECCO-GODAE
167      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
168      * fully merged and updated from SIO code
169        windstress sign change affects
170        - exf_inscal_[u/v]stress
171        - sign of xx_tau[u/v] adjustments
172        - signs in cost_scat
173      * ctrl_get_gen: avoid update of tau[u/v] for first few days
174      * natl_box_adjoint updated and compressed
175      * 2-level checkpoint switch added
176        (tested in EXP. 1 of natl_box_adjoint)
177      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
178    o SVD
179      * first complete, non-hacked version for SVD calculations
180      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
181        performed via direct access files admtlm_vector.it????
182        (via ctrl_[un]pack)
183      * optimcycle is used for ARPACK iteration counter
184        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
185      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
186        and add linear transforms where necessary
187      * controls are initial/final SST, SSS (can be extended; need to check
188        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
189    o mdsio: filename info to both stderr, stdout
190    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
191      from sign change
192    
193    checkpoint55j_post
194    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
195      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
196    o add consistent build directories and .cvsignore files to verification
197    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
198    o make all subroutines 30 or less characters in length for certain older
199      compilers to work (a thorough search only turns up two routines in
200      pkg/ptracers)
201    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
202      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
203    
204    checkpoint55i_post
205    o change arrays for total vertical diffusivity (2.D if explicit,
206      3.D if implicit) ; each ptracer uses its own background value.
207    o added mnc/NetCDF output capability to ocn_compon_interf
208      - added bits to verification/cpl_aim+ocn so that it can run on
209        ITRDA and other clusters without the mpirun "-wd" option
210    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
211      configuration
212    o give MNC the ability to create additional files rather than
213      exceeding a specified file size limit "MNC_MAX_FILESIZE"
214      - the default is just less than 2GB which is a practical limit
215        on many systems
216    o Compute the non-local term using either KPP vertical diffusivity (=default)
217       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
218    
219    checkpoint55h_post
220    o add verification test "vermix"
221    o remove all the *_ioinc flags and replace with the single global
222      outputTypesInclusive flag
223    o allow to set a vertical profile of vertical diffusivity for T & S
224    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
225    o useMNC moved from data.mnc to data.pkg
226    
227    checkpoint55g_post
228    o Renaming carbon AD experiments to comply with testreport conventions
229    o Updating adjoint of Held-Suarez hs94.1x64x5
230    o Fixing directives for non-ECCO forward_step, after ECCO directives
231      have been fixed to avoid recomp. of do_oceanic_phys
232      Works well for global_ocean.90x40x15,
233      but recomp. issue remains for carbon
234    o Updating adjoint output for natl_box_adjoint after
235      pkg/ecco has been modified (see taga c55d_post)
236    
237    checkpoint55f_post
238    o rename to timeave_init_fixed
239    
240    checkpoint55e_post
241    o some delicate re-shuffle of store directives to avoid one
242      extra call of do_oceanic_physics
243      affects ecco_the_main_loop.F, do_oceanic_physics.F
244      checkpoint_lev1_directives.h
245    o NB: this may break global_ocean adjoint temporarily,
246      but it is clear how to fix it. Will do later, need this now.
247    
248    checkpoint55d_post
249    o ECCO specific cost function terms (up-to-date with 1x1 runs)
250    o ecco_cost_weights is modified to 1x1 runs
251    o modifs to allow observations to be read in as
252      single file or yearly files
253    o enable to read exf forcing fields as either
254      single file or yearly files (flag useExfYearlyFields)
255    checkpoint55d_pre
256    
257    o switch between 2-level and 3-level checkpointing
258    o add ability of MNC to write local and "partial" (eg. 2D slices where
259      the full 3D field is never actually stored) arrays to NetCDF files
260      with the correct (that is, the complete multi-dimensional) set of
261      array indicies
262      - used in mom_vecinv() to write the diagFreq output
263      - tested (demonstrated) in verification/aim.5l_cs
264    o further mnc-ification
265      - add verification/lab_sea to the list with mnc setups
266      - fix undefined mnc v-names in cd_code
267      - add kpp to mnc output (both snapshot and timeave)
268    o non-hydrostatic code
269      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
270        in calc_gw.F
271      - defaults to viscAh
272      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
273        friction or Leith) in non-hydrostatic mode, as long as there is
274        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
275    o pkg/cost
276      extend simple cost functions to treat time mean quantities
277      (T,U,V) via cost_accumulate_state from cost_tile
278    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
279        be 2 times larger than the minimum size the advection scheme requires.
280        now get a perfect conservation of salt in advect_cs test-exp (updated)
281    o GGL90 (Gaspar's TKE mixed layer)
282      - add horizontal diffusion of TKE, requires exchanges in
283        do_fields_blocking_exchanges, horizontal diffusivity is zero by
284        default. In OPA there is no horizontal diffusion of TKE but the
285        mixing coefficients are computed from a horizontal average of TKE of
286        6 points or so. I think that diffusion has a little more physical
287        justification.
288      - clean up ggl90_calc in the hope of reducing memory usage (this hope
289        was in vain)
290      - mask tke-variable in ggl90_init
291    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
292    o fix biharmonic diffusion on CS-grid.
293    o more obcs stuff
294      - added obcs_external_fields_load as an alternative to the EXF-pkg option
295        for reading boundary values. This routine is called from
296        obcs_prescribe_read
297      - updated obcs_check
298      - changed sponge layer relaxation parameter units for days to seconds
299      - turned off sponge layer by default
300      - changed argument list of OBCS_CALC to myTime+deltaTclock
301      - fixed about 35 bugs in obcs_external_fields_load
302    
303    checkpoint55c_post
304    o obcs stuff
305      - new runtime flags useOBCSprescribe, useOBCSbalance
306      - re-arranged obcs_calc
307      - moved exf_getobcs to obcs_prescibe_read
308        obcs_prescibe_read is called after ORLANSKI stuff
309        and independent of it (executable can contain all).
310      - updated obcs_check
311      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
312        These may be necessary only if tangential velocities are
313        prescribed at OB, not sure, needs testing.
314    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
315      which simplifies the calls and passes the ifc check-bounds test
316    
317    checkpoint55b_post
318    o add a 2D scalar, Z location, exchange_2 routine.
319    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
320      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
321      affects advect_cs results (for the wrong reason): update output.txt
322    o use a more standard discretization for biharmonic viscosity ;
323     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
324      affects results of dome set-up: update output.txt
325    o fix gad_advection.F (CubedSphere part), back to version 1.23
326    o fix bug in mom_vi_del2uv.F (CubedSphere part).
327    
328    checkpoint55a_post
329    o merged code to
330      * prescribe/read time-dependent open boundaries
331        (works in conjunction with exf, cal)
332      * sponge layer code for open boundaries
333      * each boundary N/S/E/W now has its own CPP option
334        (healthy for the adjoint)
335    
336    checkpoint55
337    o up-to-date adjoint of previous breaks
338      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
339      - global_ocean_ebm: adjoint still needs fix (TLM ok)
340      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
341      - carbon: * remove tr1-related adjoint verification
342                * add ptracer as control variable
343    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
344      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
345    
346    checkpoint54f_post
347    o in verification/carbin/ remove experiment related to
348      ALLOW_PASSIVE_TRACER (array tr1 etc)
349      code_ad/ input_ad/ results_ad
350    
351    o add two new packages
352      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
353        + subject to optimization (memory)
354      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
355        + subject to reordering (many GOTOs in the original code)
356        + so far opps is called for every (i,j) point, and then operates in
357          the vertical; one may want to reorder the scheme in order operate in
358          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
359          fields)
360    o overhaul of IO so that we now have flags for MDSIO and/or MNC
361      - all verification tests compile and run with linux_ia32_g77
362      - defaults are compatible with current input files--nothing
363        should change if you were not previously using MNC
364      - MNC output has been added in numerous places (eg. timeave)
365        but there are still a few writes not yet do-able with MNC
366        (this is in progress)
367      - flags now allow for either/or/both use of MDSIO and MNC and
368        documentation will soon follow
369      - numerous small formatting cleanups for ProTeX
370    o add version info (via BUILD_INFO.h) to MNC and stdout
371    
372    checkpoint54e_post
373    o add two new packages
374      - pp81 (Packanowski and Philander, 1981), Richardson number and
375        stratification dependent mixing
376      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
377      - these scheme operate in a similar manner as KPP (without ghat, of
378        course), however there is only one diffusivity that is used for both
379        temperature and salinity (and passive tracers)ç
380    o add offline package
381    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
382      provided by Stephanie Dutkiewicz
383    o genmake2: add ability to search for C compilers and cleanup test output
384      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
385    
386    checkpoint54d_post
387    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
388    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
389      leading to additional shift by 5 days each year of integration
390       (i.e. leading to considerable offset over the years)
391    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
392    o start with no AB and no initial filtering (staggerTimeStep):
393      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
394    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
395      (external loading & cpl import/export stay in forward_step.F)
396    o update coupling interface to work with new staggerTimeStep
397    o change MDSIO ptracers_pickup.
398    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
399    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
400    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
401    
402    checkpoint54c_post
403    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
404      this affects (truncation error) output.txt of test-exp:
405       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
406    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
407    o change Qnet to always be the net heat flux, (+upward).
408      affects (truncation error) output of natl_box exp.: updated
409    o define the max number of passive tracers in PTRACERS_SIZE.h
410    o start to test mnc routinely in exp0
411    o add sea-ice loading (sIceLoad) as a new forcing field.
412    
413    checkpoint54b_post
414    o add testreport "-j JOBS" option for parallel builds (tested and pretty
415       impressive on Altix and Opteron systems)
416    o diagnostics can now write NetCDF files through the mnc package
417    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
418    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
419    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
420      affects (truncation error) output of lab_sea & natl_box exp.: updated
421    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
422    
423    checkpoint54a_post
424    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
425    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
426    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
427    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
428      + internal_wave (shift in writing cg2d_ini_res)
429    checkpoint54a_pre
430    
431    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
432      - modified verification/lab_sea and natl_box_adjoint accordingly
433    
434    checkpoint54
435    checkpoint53g_post
436    o prepare splitting of thermodynamics: store convect.counter in common block
437    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
438      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
439    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
440    o new parameter "nShapS": allow to treat differently S from T (nShapT)
441    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
442    o restore adjointability
443    
444    checkpoint53f_post
445    o modifications that affect AIM experiment results (update output.txt):
446      - no advection of S at top interface Nr (pkg/generic_advdiff)
447      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
448    o AIM pkg:
449      - include stability function into surf.Flux derivative relative to Tsurf
450      - calculate clear-sky radiation & surface temp. change (for diagnostics)
451    
452    checkpoint53e_post
453    o merged cylindrical coord configuration
454    o added rotating_tank experiment
455    checkpoint53e_pre
456    
457    checkpoint53d_post
458    o faulks upgraded: re-generate output.txt that have changed:
459       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
460    o Added Bryan and Lewis, 1979, vertical diffusivity profile
461    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
462    o added Sadourny discretization of Coriolis
463      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
464      - re-enabled use of omega3 (useAbsVorticity)
465    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
466      vector-invariant equations
467      - note: does *NOT* yet use same variable visc. for no-slip BC's.
468    o recoded the lateral boundary conditions for non-hydrostatic w, this time
469      hopefully without new bugs
470      - still to do: biharmonic friction for non-hydrostatic w
471    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
472    o regenerated output for global_ocean_ebm (using -ieee)
473    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
474      of mom_common/
475      - simple re-arrangement of instructions within computing loop
476    checkpoint53d_pre
477    
478    checkpoint53c_post
479    o new version of coupler for AIM+thSIce and Ocean models
480     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
481     - land: change Evaporation of snow
482     - aim with thSIce: fix bug in snow-precip.
483    o changes to calc_gw.F
484     - bug fix for w^2 term near the bottom boundary
485     - (hopefully) improve the lateral slip boundary condtions for use with
486        partial/looped cells
487      - because the bug fix changes two verification experiments anyway (exp5
488        and plume on slope), change the lateral boundary condition from half slip
489        to the value of no_slip_sides
490    o ebm package wasnt quite up to the parallel task. Fixed that.
491    o Adjoint of EBM package + verification
492      * TLM OK
493      * ADM not sufficient accuracy yet (needs further testing)
494    
495    checkpoint53b_post
496    o Commiting new energy balance model to repository
497      * package is pkg/ebm
498      * verif. is verification/global_ocean_ebm
499      * references are in ebm_driver.F
500    C      * X. Wang, P. Stone and J. Marotzke, 1999:
501    C        Global thermohaline circulation. Part I:
502    C        Sensitivity to atmospheric moisture transport.
503    C        J. Climate 12(1), 71-82
504    C      * X. Wang, P. Stone and J. Marotzke, 1999:
505    C        Global thermohaline circulation. Part II:
506    C        Sensitivity with interactive transport.
507    C        J. Climate 12(1), 83-91
508    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
509    C        Destabilization of the thermohaline circulation
510    C        by atmospheric eddy transports.
511    C        J. Climate 7(12), 1870-1882
512    o Will need long integration testing.
513    checkpoint53b_pre
514    
515    o created pkg/mom_common in preparation for variable viscosity code
516    o renamed and split ini_mnc_io
517    o pkg/land: only liquid water can diffuse or run-off
518    o AIM using land: soil wetness availability account for snow
519    o added printMapIncludesZeros to EEPARMS namelist
520    
521    checkpoint53a_post
522    o restore TAMC compatiility for exf_constants.h
523      (no usage of _d in .h)
524    o Additional storing in KPP in an attempt to fix
525      TAMC problem with adjoint of KPP code.
526      (no success...)
527      Identical code works fine with TAF.
528    o Fixed verification/natl_box_adjoint experiments.
529      Initial conditions for Experiments 4 and 5 are now
530      set to "SEAICE_initialHEFF=0", which is more reasonable,
531      and hence gives results closer to that of Experiment 2.
532      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
533    
534    checkpoint53
535    o stable checkpoint with up to date adjoint
536      TLM tests only run for 1st grdchk at the moment. Its unclear if
537      this is a code problem or a problem with resetting code for g_
538      variables that is being autogenerated wrong.
539      Otherwise:
540       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
541       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
542         are both still in chaos following their security messes.
543    
544    checkpoint52n_post
545    o various build (mostly genmake2) changes including:
546      - ability to build/run more easily within Cygwin and MacOS X
547      - more complicated Makefiles with a stronger dependence on Gnu Make
548    o pkg/seaice modifications
549      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
550        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
551        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
552      - changed proxy for geostrophic velocity and updated
553        verification/lab_sea/results/* accordingly
554      - removed ADI dynamic solver from pkg/seaice
555      - replaced all occurrences of 1/CSTICE or 1/CSUICE
556        they caused a segmentation fault under certain circumstances
557      - removed unused field WATR
558    o bug fix in exf-package:
559      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
560         now reflect that.
561    o small fixes in the cal-package:
562      - set reference date to first of January for the 'model'-calendar
563      - failing of cal_CheckDate in cal_FullDate now actually results in a
564        warning
565    o small modifications in exf-package to increase flexibility:
566      - change climtempfreeze from a constant to a runtime parameter that
567        is specified in data.exf_clim (default = -1.9)
568      - introduce runtime parameter windstressmax (default = 2.0) that is
569        specified in data.exf
570    o fix in pkg/thsice:
571      - update Evap (Tsf changes) to be consistent with Latent heat flux
572      - maintain snow precipitation unchanged (even if Tsf >=0).
573     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
574    
575    checkpoint52m_post
576    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
577      this does not change any of the results, because myIter=0 in swfrac always
578      lead to jwtype=2 (the default anyway), but the call makes little sense
579      as a default
580    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
581    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
582      atmospheric model (AIM) to use it ; add a "slab ocean" component.
583    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
584    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
585    o extending useSingleCpuIO option to work with new exch2 I/O format
586      - old-style, missing-tile I/O is still accessible by defining CPP
587        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
588    o monitor package can write to NetCDF files and/or STDOUT
589    o fix re-definition bug in MNC_GRID_INIT_ALL()
590    o doc/api_reference added
591      - a framework for building an API Reference Manual using all
592        the "protex" comments embedded in the code
593      - see pkg/generic_advdiff, pkg/mnc for examples
594    o MNC:
595      - make myThid the last argument for all subroutines
596      - new default for the grid files: NO halos
597      - add useMNC and other run-time flags
598      - separate per-file-group handling of the unlimited dimension
599      - early initialization of MNC w/ flags read at the eeboot stage
600        and lookup tables set in initialize_fixed
601      - write all MNC output to a freshly-created directory
602    o thermodynamics sea-ice (thsice) is now tested with testreport.
603    o test exp. advect_cs: use the standard cs32 grid ; update output.
604    o Added functionality to grdchk:
605      pick global i,j,k position (or nearest wet) where to perform check.
606    
607    checkpoint52l_post
608    o new land formulation:
609      a) use ground enthalpy as prognostic variable to ensure exact
610         energy conservation.
611      b) account for water temperature and for latent heat of freezing
612         in all processes (rain, run-off, ground storage)
613      c) compute surface and ground temperature implicitly.
614    o aim_v23 modification for new land model:
615      a) Treat separately land / ocean / sea-ice surface fluxes
616         to allow implicit computation of land & sea-ice surface temp.
617      b) add snow precipitation.
618    checkpoint52l_pre
619    
620    o fix problem (when 1 tile is empty) in min/max monitor.
621    o fix bug in timeAve (u,vZetatave in common block)
622    o no restoring terms under ice for pkg/seaice
623    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
624    o bug fix for pkg/seaice pickups
625    o change MNC call locations and add coordinate attributes
626    o mask vorticity at the corner ; affects global_ocean.cs output
627    o fix ini_curvilinear_grid ; test CS experiments with mpi
628    o aim.5l_cs: modify sea-ice fraction input file ; update output
629    o exf: Adding simple range check routine for exf fields after read
630    
631    checkpoint52k_post
632    o removed top-level directory "diags"
633      - we migrated these functions to pkg/timeave a long time ago
634    o fixed bug introduced in pkg/monitor
635    o accuracy ctrlprec = 32 insuffient for gradient checks using
636      averaged fields (I/O via cost_averages)
637      -> use ctrl.h in active_file*.F to control I/O precision.
638    o paramter list of CALL ADTHE_MAIN_LOOP
639    o added initial do_the_model_io to ecco
640    o set all ...Freq to zero after cost_final
641      taveFreq, dumpFreq, pChkptFreq
642    o MAIN and ECCO differentiability restored
643    
644    checkpoint52j_post
645    o fix nchklev in tamc.h for global_ocean...
646    o Bringing flow and store directives up-to-date
647    o Really weird thing!
648      call do_the_model_io from the_main_loop with parameters
649      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
650      TAF places a faulty re-call of initialise_varia
651      after cost_final call which should not be there!
652    checkpoint52j_pre
653    
654    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
655      error messages
656    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
657    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
658      debug output
659    o modfied mdsio_writefield.F to handle non-global files under exch2
660    o update AIM Cubed-Sphere exp (aim.5l_cs):
661      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
662    o update AIM Equatorial Channel exp:
663      use standard aim_v23 pkg and change the SST fields to be more realistic.
664    o globalFile now works with exch2
665    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
666      mon_vort3.F to make exch2 friendly with >1 tile per cube face
667    o limit timeave output for hi-res integrations
668    
669    checkpoint52i_post
670    o removed CPP_EEOPTIONS.h from verification/*/code
671    o updated the tiling for global_ocean_pressure
672    checkpoint52i_pre
673    
674    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
675      the old pkg/aim).
676    
677    checkpoint52h_pre
678    o shortened offending lines in exch2_send_rx?.template
679    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
680    o genmake2: add build & execute test for NetCDF code
681    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
682      old grid files, moved CPP_EEMACROS.h to pkg/exch2
683    o added useSingleCPUIO flag to monitor.F and mon_out.F
684    o added temporary hack for sea-ice dynamics on the cube:
685      metric terms are ignored and it is assumed that
686      there is no sea-ice on cube faces 1, 2, 4, and 5.
687    
688    checkpoint52f_post
689    o added exch2 cube routines to pkg/exch2
690    o modified hs94.cs-32x32x5 to use it
691    o added new grid files to hs94.cs-32x32x5
692    checkpoint52f_pre
693    
694    checkpoint52e_post
695    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
696      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
697    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
698      to work with implicit vertical advection and AB ;
699    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
700    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
701     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
702    checkpoint52e_pre
703    
704    o fix bug in impldiff when Nr=1 or Nr=2.
705    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
706    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
707    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
708      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
709    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
710    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
711    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
712    
713    checkpoint52d_post
714    o re-tiled many expts to allow comparison in multi-processor mode
715      - updated output accordingly
716      - changed hs94.128x64x5 to use intial T from file rather than use the
717        random number generator
718    o add infrastructure in model routines for fizhi and gridalt packages
719    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
720    o changes to permit hi-res, cubed-sphere, configuration
721      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
722      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
723      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
724        of surface winds for the cube
725      (A verification experiment, based on global_ocean.cs32x15, but with
726       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
727       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
728       complete with example surface forcing files and matlab scripts to look
729       at the output and compare it with that of global_ocean.cs32x15.)
730    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
731       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
732       to conform to the common rule.
733    o check-in the first version of the coupler + interfaces for multi-components
734       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
735       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
736       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
737       - ocean and atmos. share the same horizontal grid (no interpolation).
738       - exchanges between component and coupler is done in forward_step
739    o new verification experiment, cpl_aim+ocn:
740       coupled ocean - AIM atmosphere on cs32 grid.
741    
742    checkpoint52d_pre
743    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
744    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
745    
746    checkpoint52c_post
747    o Fixing OPTIONS files for use of exf:
748      - ALLOW_ECCO not needed
749      - ECCO_CPPOPTIONS.h should not be included from
750        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
751        as has been the case in the past
752      - All cal/exf related options are currently set in
753        single header file. Should remain so until we
754        agree on a consistent new policy.
755    o Removed all CPP options for cal package.
756      cal has no more CPP options.
757    o modified STOREs in GAD_ADVECTION
758    o corrected key comp. for passkey
759    
760    checkpoint52b_post
761    o new version: "thsice" of thermodynamic sea-ice pkg:
762     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
763     - modify fluxes but do not change theta directly;
764     - light cleaning of bulk_force pkg (still needed with thsice).
765     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
766       + output_thsice.txt to test thsice & bulk_force pkgs.
767    o put back grid & coriolis monitor output.
768    checkpoint52b_pre
769    
770    o call "do_the_model_io" at the beginning (=> dump initial state)
771    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
772    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
773      (need info on NUMBER_OF_PTRACERS)
774    o missing PTRACERS headers in some routines
775    o default tamc.h in pkg/autodiff supposed to crash
776      to ensure proper customization
777    
778    checkpoint52a_post
779    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
780      - moved surfaceTendencyTice from pkg/seaice to main code
781      - subroutine FREEZE_SURFACE now limits only surface temperature
782        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
783        => new output.txt for global_ocean.cs32x15 & global_with_exf
784      - keep the old version of FREEZE for backward compatibility;
785        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
786      - corresponding modifs for TAF directives
787    o added surface flux output variables to TIMEAVE_STATVARS
788    o time-averaged output for pkg/ptracers
789    o fix problem with ECCO-related divided adjoint
790      snapshot file was missing some ad-variables,
791      but no warning issued by TAF
792    
793    checkpoint52a_pre
794    o some bug fixes for #undef REAL4_IS_SLOW
795    
796    checkpoint52 = ecco_c52_e35
797    o after testing adjoints of checkpoint51u_post
798    
799    checkpoint51u_post
800    o this is the post-merge tag of the ecco-branch
801      (needs another clean checkout and re-testing)
802    o various natl_box_adjoint configs and results
803      but no input fields
804    o obcs adjoint not yet merged!
805    o adding ECCO global 1x1 and 2x2 degree configs
806    o updated/extended some store directives for seaice
807    o pkg/ecco now containes ecco-specific part of cost function
808    o top level routines the_main_loop, forward_step
809      supersede those in model/src/
810      previous input data.cost now in data.ecco
811      (new namelist ecco_cost_nml)
812    o in ctrl/ cleaned some cross-dependencies and updated CPP options
813    
814    checkpoint51t_post
815    o this is the pre-merge tag of the ecco-branch
816    
817    checkpoint51s_post
818    o cleanup: removed various obsolete #define-s
819    o pkg/grdchk
820      - renamed 'ph-grd 3' to 'grad-res'
821      - merged from ecco-branch
822        (remaining bug fixes for obcs gradient checks)
823      - additional high-precision output for testreport
824        (grep for 'precision_grdchk_result')
825    
826    checkpoint51r_post
827    o cleaned up or removed CPP_OPTIONS.h files
828    o updated results for some of the tests to reflect the new
829      optfiles (-ieee: -O0 instead of -O3)
830    
831    checkpoint51q_post
832    o cd_code:
833      - moved cd_scheme.F -> cd_code_scheme.F
834      - separate read_checkpoint from cd_code_ini_vars.F
835      - separated cd_code part from write_checkpoint
836      - updated AD_SOURCE, generated .flow
837      - added CD_CODE_VARS.h to the_main_loop
838      - Moving cd_code specific store dir.s to pkg/cd_code
839    o ctrl package totally restructured
840      - pack/unpack now optional and decoupled from
841        xx_/adxx_ I/O
842      - ctrl_pack/unpack cleaned
843        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
844      - confined inclusion of AD_CONFIG.h to where necessary.
845    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
846    
847    checkpoint51p_post
848    o create initial cd_code package
849      - WARNING: the initialization of fields within packages
850        is broken because INI_FIELDS (where READ_CHECKPOINT is
851        called) is called *before* PACKAGES_INIT_VARIABLES.
852        This seems to be backwards since
853        1) its important to initially zero the entire field including
854           the "halo" region
855        2) zeroing needs to be done *before* reading pickup info
856           and the pickup call might or might not happen in any
857           particular run
858      - this needs an overhaul for R2
859    o cleanup verification/*/code/GMREDI_OPTIONS.h
860    o cleanup testreport
861    
862    checkpoint51o_post
863    o bringing AD-related verif's up to date with genmake2
864      - carbon/
865      - global_ocean.90x40x15/
866      - hs.94.1x64x5/
867      - (front_relax/ )
868    o (more) consistent directory structure for AD-related verif.'s
869    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
870    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
871    o bug fix in find_alpha.F for MDJWF:
872      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
873        change rho -> rho-rhoConst
874      - replace call find_rho to find_rhonum
875    o initialisation of rFlx extended to full array (required by TAF)
876      and shifted to thermodynamics
877    o removed PTRACERS.h in ptracers routine
878    o added surfacetendencyPtr to S/R parameter list pracers_forcing
879    o Correcting initialisations for fVerU, fVerV.
880    o helping TAF to recognize dependency on kUp for
881      fVerU, fVerV
882    o Replacing delZ by delR in pkg/ctrl/
883    checkpoint51o_pre
884    
885    o undid all of cp51 pending some cleanups and discussion
886    o added the [#include "AD_CONFIG.h"] statement to all files that need
887       it for adjoint/tl #defines
888     o re-worked the build logic in genmake2 to support AD_CONFIG.h
889     o removed tools/genmake since it no longer works
890    
891    checkpoint51n_post
892    o modifications to make FREEZE flux visible to pkg/kpp
893      - moved surfaceTendencyTice from pkg/seaice to main code
894      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
895      - subroutine FREEZE now limits only surface temperature
896        (this means new output.txt for global_ocean.90x40x15,
897         global_ocean.cs32x15, and global_with_exf)
898    o added surface flux output variables to TIMEAVE_STATVARS
899    
900    checkpoint51n_pre
901    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
902    o added [#include "AD_CONFIG.h"] to all files that use the following
903      defines:
904      - ALLOW_ADJOINT_RUN
905      - ALLOW_TANGENTLINEAR_RUN
906      - ALLOW_ECCO_OPTIMIZATION
907    
908    checkpoint51m_post
909    o incorporating changes to get TAMC/TAF working in genmake2
910      - added new TAMC/TAF targets to the Makefile
911      - various cleanups related to package handling
912      - these changes should have no impact on the forward model
913    
914    checkpoint51l_post
915    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
916     - faster algorithm for cal_addtime.F
917     - higher precision arithmetic, where needed
918     - pkg/exf *startdate variables changed from calendar date to
919       model integration time
920    
921    checkpoint51l_pre
922    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
923    o enable to apply restoring on S & T only in a latitude band.
924    o update output (external_forcing_surf modif. change truncation errors)
925       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
926    
927    checkpoint51k_post
928    o change default to: useNHMTerms=.FALSE.
929     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
930       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
931     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
932        exp1, ideal_2D_oce
933     - change data file of oceanic exp (leave the results unchanged for now)
934       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
935    o set gravitySign automatically according to the vertical coordinate used
936      (and change sign: back to "logical" value: +1 when R increases downward)
937    o added an include barrier to the default CPP_OPTIONS.h and
938      removed the #include "PACKAGES_CONFIG.h" from it
939    o fix a bug in mom_fluxform (from chk51j_post)
940    
941    checkpoint51j_post
942    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
943    o adjusted some flow directives (dynamics, thermodynamics)
944    o added cubed-sphere case to test cost function
945    o heckpoint_lev?_directives.h now include
946      pkg-specific directives, whenever those are enabled.
947    o Moving pkg-specific flow directives to corresponding pkg
948      Moving pkg-specific differentiation list to corresponding pkg
949      Moving pkg-specific checkpoint-lev storing to corresponding pkg
950      ---> conventions are
951           - pkg_ad.flow
952           - pkg_ad_diff.list
953           - pkg_ad_check_lev?_dir.h
954    
955    checkpoint51i_post
956    o merge of the branch-genmake2
957      - knowingly breaks the older genmake
958      - automatic generation of all ALLOW_${PKG_NAME} defines
959      - new testreport supersedes older testscript
960    o large number of package inclusion and header cleanups
961    checkpoint51i_pre
962    
963    o new output for adjoin of global ocean vector invariant
964    o fix for checkpoint of thermodynamic seaice and bulk_force
965    o Steph gchem various cleanups
966    
967    checkpoint 51h_pre
968    o fixed some single quotes
969    o modify gchem pkg to be more versatile
970    o modifications to clean up dic pkg
971    o add pkg/cfc
972    
973    checkpoint51g_post
974    o provide links for ARPACK and ADM*TLM
975    o start removing verification/vero/
976    o update AD-related stuff
977      (in particular some IF-statements in model/src/ routines)
978    o adding to verification/global_ocean.90x40x15/ adjoint of
979      vector invariant setup
980    
981    checkpoint51f_post
982    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
983    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
984      of tracer Green's fucntions for ocean inversion project.
985    
986    checkpoint51f_pre
987    o Added on-the-fly spatial interpolation capability
988        "USE_EXF_INTERPOLATION" to pkg/exf.
989      - This is a temporary Cartesian-grid hack until
990        the super-duper ESMF coupler becomes available.
991      - See verification/global_with_exf/README for usage example.
992      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
993        flags and modified pkg/seaice accordingly.
994    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
995        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
996        non-local transport term.
997    
998    checkpoint51e_post
999    o pkg/mom_vecinv:
1000      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1001      - add time-ave diagnostic of vorticity advection.
1002    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1003    o atmospheric geopotential: - include water vapor effect;
1004                                - use p^kappa in p* scaling.
1005    o land pkg: read initial state from files.
1006    o AIM : add stratospheric drag in the upper level
1007    
1008    checkpoint51d_post
1009    o change function ILNBLNK (=> last non-blank char.) to return zero
1010      (instead of the string length) when the string. char is empty
1011    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1012    o modif's to restore TAMC compatibility
1013      - avoid "_d" constructs in PARAMETER declarations
1014      - avoid interrupting lines by comment lines
1015    o Use cluster local disks for purely local I/O
1016      vs. globally visible disks needed for ctrl stuff
1017      (merged from ecco-branch)
1018      - new active_file_loc... and mdsio_..._loc routines
1019      - affected packages: autodiff, ctrl, grdchk, mdsio
1020    
1021    checkpoint51c_post
1022    o introducing integer flag debugLevel
1023      - debLevZero: suppress all output
1024      - debLevA: standard
1025      - debLevB: equivalent to current debugMode=.TRUE.
1026    o introducing pathname variable mdsioLocalDir for mdsio
1027      that can be specified at runtime
1028      (relevant for cluster I/O to local disk)
1029    `
1030    >>>checkpoint51b_post
1031    adjoint of ptracers
1032    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1033    o extended state in checkpoint_lev?, etc.
1034    o alternative ctrl/cost with tr1 or ptracer
1035    o new comlev1_bibj_ptracers
1036    o new ptracers.flow
1037    o made ptracers_forcing same as external_forcing_s
1038    o added verification for adjoint with ptracers
1039      - adm. grdchk fail so far
1040      - tlm. grdchk OK
1041      - checked tapelev/comlev recomputations: OK
1042    <<<checkpoint51b_pre
1043    
1044    checkpoint51a_post
1045    o added code for biogeochemistry package
1046      - new pkgs: dic, gchem
1047      - new subroutine in ptracers
1048    o modify code for biogeo packages
1049      - in model/src and pkg/ptracers
1050    
1051    checkpoint51
1052    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1053      - autodiff, ctrl, exf, grdchk, seaice
1054      kept separate packages
1055      - cost, ecco, obcs
1056    o updating verification/internal_wave, verification/lab_sea
1057      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1058    
1059    checkpoint50i_post
1060    o Preparing next differentiable checkpoint and sync
1061      of MAIN vs. ecco-branch
1062      - 1st step: this one is differentiable
1063      - 2nd step: next(! not this) checkpoint will have updated packages
1064                  from ecco-branch)
1065    
1066    checkpoint50h_post
1067    o new package "land": provide surface BC for AIM.
1068    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1069    o AIM: use true log-P extrapolation for near surface temp (= as in
1070        F.Molteni paper) ; update aim.5l_cs output.
1071    o New variable in PARM03 for more flexible pickups
1072    o somewhat cleaned package initialisation sequence for
1073      ctrl/ cost/ ecco/ in packages_... routines
1074    
1075    checkpoint50g_post
1076    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1077      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1078      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1079        made the default because of faster convergence than ADI
1080    
1081    checkpoint50f_post
1082    o exf totally restructured
1083      - replaced all exf_set_ routines by one generic exf_set_gen.F
1084        and made sure it's still differentiable
1085      - split exf_getffields.F into new exf_bulkformulae.F
1086      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1087      - updated adjoint/makefile and relevant verif. accordingly
1088    
1089    checkpoint50f_pre
1090     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1091          + change Evap over land. (update aim.5l_cs output)
1092     o added missing .cvsignores and made uniform across expts
1093     o changed configuration of tidal_basin_2d expt
1094     o added pkg/debug functions for tracing code in fatal crashes
1095     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1096     o new fn in pkg/monitor to stop model if solution grows too big
1097     o removed lots of single quotes from comments
1098    
1099    checkpoint50e_post
1100    o make KPP work with PTRACERS
1101     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1102       nearly a copy of kpp_transport_s
1103     - there is no analogue to SurfaceTendencyS, so I have to use
1104       gPtr(of the surface layer) instead
1105    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1106    checkpoint50e_pre
1107    
1108    checkpoint50d_post
1109    o change kpp output from multiple-record state files to single-record state
1110      files analogous to write_state.F
1111    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1112      analogous to the cg2d-related output.
1113    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1114      so that writing to internal file fn (with length 512) fails.
1115    checkpoint50d_pre
1116    
1117    checkpoint50c_post
1118    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1119    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1120    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1121    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1122    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1123    
1124    checkpoint50c_pre
1125    Merging from release1_p13:
1126    o bug fix for pkg/seaice dynamic solver
1127    o Added SEAICE_initialHEFF to pkg/seaice
1128    
1129    checkpoint50b_post
1130    o store u*,v* in gU,V instead of in guNm1,gvNm1
1131    o in order to put the momForcing out of the Adams-Bashforth:
1132      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1133      to timestep.F
1134    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1135    o re-generate output for highly sensitive test-exp:
1136       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1137    
1138    checkpoint50b_pre
1139    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1140    o corrected CPP option mismatch in exf_Bulk... functions for case
1141      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1142    
1143    checkpoint50a_post
1144    o Bug fix for merging between c50 and KPP.
1145      ikey was passed from thermodynamics to kpp_calc via
1146      common block rather than being recomputed in kpp_calc,
1147      in contradiction with new key itdkey.
1148      New key ikppkey created, and tamc.h headers updated.
1149    
1150    checkpoint50
1151    - 2nd step of merge with ecco-branch:
1152      merge changes in ecco-branch back into main trunk
1153    - bug fix in find_alpha
1154    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1155    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1156    - merged some sliced AD support routines
1157    
1158    checkpoint49
1159    merged from ecco-branch:
1160    o exf:
1161      - Enable initialisation of forcing fields to constant
1162        (runtime) values.
1163      - in exf_getffields.F
1164        Reduce i-/j-loop to interior domain, discarding overlaps.
1165        That also fixes wrong TAF-key computations for key_1, key_2
1166        with bulf formulae.
1167      - exf_init.F modify #ifdef for exf_init_evap
1168      - exf_getffieldrec.F, ctrl_getrec.F
1169        The following INT-usages are not safe:
1170          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1171          fldcount = int(fldsecs/fldperiod) + 1
1172        and were modified.
1173    o autodiff: checkpoint_lev...
1174      - updated storing for bulk formulae (some arrays were missing)
1175      - added state for seaice package
1176      - synchronized with main branch
1177    o DIVA:
1178      Modif.s in
1179      - the_main_loop.F
1180      - the_model_main.F
1181      and added cost_final_restore.F cost_final_store.F
1182      o With these changes, it is possible to fully separate
1183        the first forward run to compute the cost function (mdthe_main_loop)
1184        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1185        into separate model executions.
1186        This enables better tuning of DIVA to given queue sizes.
1187      o Loss of cost function value in consecutive DIVA runs is
1188        fixed by storing to 'costfinal' file.
1189      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1190        beginning/end of adjoint integration is accounted for.
1191      The current changes apply to TAF-1.4.26.
1192      TAF has one remaining bug, requiring one manual change
1193      (see MITgcm manual).
1194    o cal: synchronized between MAIN and ecco-branch
1195    
1196    checkpoint48i_post
1197    o Changes to restore differentiability of code w.r.t. previous tag
1198      (mostly adding new routines to make list and replacing
1199      pressure by totPhiHyd).
1200    o Updated and merged grdchk package
1201      - has both ADM and TLM checks
1202      - works for single- and multi-proc.
1203      - output cleaned
1204      - worked successfully for parallel DIVA
1205    o genmake:
1206      - Adding -platform=SP4
1207      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1208    o Modif. for DIVA:
1209      ctrl_unpack should not be called in intermediate DIVA interval.
1210      (similar thing would apply for active files such as
1211      tbar, sbar, psbar, which should not be reinitialised;
1212      only relevant for ecco-branch)
1213    
1214    checkpoint48h_post
1215    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1216    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1217    o Added SEAICE_initialHEFF to pkg/seaice
1218    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1219    
1220    checkpoint48g_post
1221    --- EOS:
1222    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1223      store total Potential in totPhyHyd for diagnostics & EOS.
1224    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1225    --- Pressure/geopotential gradient:
1226    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1227    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1228      ( changes results of global_ocean_pressure )
1229    o NLFS + z-coord.: add eta*Rho' contribution.
1230    o accurate phiHyd when using interface-W at the middle between 2 centers
1231     ( changes results of ideal_2D_oce )
1232    o includes r* 2nd term in potential gradient.
1233    
1234    checkpoint48f_post
1235    Merging from release1_p12:
1236    o Modifications for using pkg/exf with pkg/seaice
1237      - improved description of the various forcing configurations
1238      - added basic radiation bulk formulae to pkg/exf
1239      - units/sign fix for evap computation in exf_getffields.F
1240      - updated verification/global_with_exf/results/output.txt
1241    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1242      (SBO) core products, including oceanic mass, center-of-mass,
1243      angular, and bottom pressure (see pkg/sbo/README.sbo).
1244    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1245      to avoid negative values in shallow regions.
1246      - updated verification/natl_box/results/output.txt
1247      - updated verification/lab_sea/results/output.txt
1248    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1249    o Added useSingleCpuIO option (see PARAMS.h).
1250    o Updated useSingleCpuIO option in mdsio_writefield.F to
1251      work with multi-field files, e.g., for single-file pickup.
1252    o pkg/seaice:
1253      - bug fix in growth.F: QNET for no shortwave case
1254      - added HeffFile for specifying initial sea-ice thickness
1255      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1256    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1257      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1258    o pkg/seaice:
1259      - adjoint-friendly modifications
1260      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1261    
1262    checkpoint48e_post
1263    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1264    o dynamics: change definition of computational domain & adapt mom_fluxform
1265      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1266    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1267        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1268        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1269        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1270        inverted_barometer solid-body.cs-32x32x1
1271      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1272    
1273    checkpoint48d_post
1274    o in preparation for r*:
1275     a) use pre-computed gradient of hydrostatic potential:
1276        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1277     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1278        => affects results of glob_oce_pressure (different truncation error)  
1279      update output.txt of ideal_2D_oce & global_ocean_pressure
1280    
1281    checkpoint48d_pre
1282    o in preparation for r*:
1283      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1284      pass the 2 comp. of the grad. as arguments to momentum S/R.
1285      but for the moment, only used if it does not change the results.
1286    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1287    
1288    checkpoint48c_post
1289    Modifications in treatment of initial flux forcing controls
1290    to avoid extra storing of flux fields.
1291    
1292    checkpoint48c_pre
1293    o Added tidal_basin_2d experiment (currently 1D!)
1294    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1295    
1296    checkpoint48b_post
1297    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1298     (modification to pressure gradient not yet implemented)
1299    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1300      (for U & V) that are used for vertical advection of momentum.
1301    
1302    checkpoint48a_post
1303    o In preparation for r*, use temp. array to compute vertical transport
1304       in flux-form momentum pkg. => change results of few test-exp.
1305      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1306                        lab_sea, natl_box & plume_on_slope
1307    
1308    checkpoint48
1309    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1310    
1311    checkpoint47j_post
1312    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1313    o moved adexch from forward_step to addummy_in_stepping
1314    o added exch in ctrl_map_...
1315    o aveFreq.=0. at end of cost_final to avoid overwrite in
1316      reverse checkpointing loop
1317    o Yet more changes in gmredi:
1318      * adgmredi_calc_tensor
1319        avoiding all recomputation of gmredi_slope_limit
1320      * adgmredi_x/y/rtransport
1321        added flag for excessive storing to avoid recomp. of
1322        u/v/rtans, dTdx/y/z
1323        -> this is not really necessary and very memory-consuming
1324      * adgmredi_slope_psi:
1325        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1326      * gmredi_slope_limit
1327        re-activated full calculation of taperfct for case 'ac02'
1328    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1329    
1330    checkpoint47i_post
1331    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1332    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1333      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1334    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1335    o gmredi: fix few bugs.
1336    
1337    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1338    This will be a good checkpoint to plug into the ecco-branch.
1339    o few modif.'s to get latest version adjointed
1340      (mainly kick out code in ini_linear_phisurf)
1341    o modif's to run adjoint with exactConserv
1342    o case GM_BOLUS_ADVEC should be cleaned
1343      S/R gmredi_slope_psi should be cleaned
1344    o verification/carbon now has exactConserv=.TRUE.
1345    
1346    checkpoint47g_post
1347    o time-average AIM output: becomes independent from statvars time-average
1348      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1349    o After TAF bug fix:
1350      Tested adjoint of gmredi package.
1351      Tests were done with checkpoint47 rather than with latest
1352      checkpoint47f_post since the latter is broken for the adjoint
1353      verification/carbon/ contains both ADM and TLM gradient checks.
1354    Here they are, before they get changed/lost/stolen.
1355    Mostly modif.'s to fix numerical sensitivities.
1356    Gradient checks OK for
1357    - GM_taper_scheme:
1358      * clipping
1359      * ac02
1360      * linear
1361      * glw91
1362      * dm95
1363      * ldd97
1364    - GMREDI_OPTIONS:
1365      * GM_VISBECK_VARIABLE_K
1366      * GM_NON_UNITY_DIAGONAL
1367      * GM_EXTRA_DIAGONAL
1368      * GM_BOLUS_ADVEC
1369    in conjunction with data.gmredi parameters to be checked in
1370    in a few minutes under verification/carbon/code/
1371    
1372    checkpoint47f_post
1373    Merging from release1_p10:
1374    o modifications for using pkg/exf with pkg/seaice
1375      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1376        and SEAICE_EXTERNAL_FLUXES
1377      - pkg/exf CPP options EXF_READ_EVAP and
1378        EXF_NO_BULK_COMPUTATIONS
1379      - usage examples are Experiments 8 and 9 in
1380        verification/lab_sea/README
1381      - verification/lab_sea default experiment now uses
1382        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1383    
1384    checkpoint47e_post
1385    o created a tag prior to creating a branch
1386    
1387    checkpoint47d_post
1388    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1389      at the bottom boundary had an erroneous half slip boundary condition
1390    o added bottom drag and no slip boundary condition capabilities to
1391      oceanic pressure coordinates code
1392    o added new verification experiment global_ocean_pressure, this experiment is
1393      also described in the tutorial section of the manual
1394    checkpoint47d_pre
1395    
1396    checkpoint47c_post
1397    o Added a verification experiment for a global cubed-sphere ocean run
1398      -  verification/global_ocean.cubed32x32x30
1399      -  uses pkg/therm_seaice and pkg/bulk_forcing
1400    
1401    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1402    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1403      when using P-coordinate; only implemented for atmospheric config.
1404    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1405      NOTES: requires option NONLIN_FRSURF to be "#define".
1406    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1407    
1408    checkpoint47b_post
1409    Merging from release1_p9:
1410    o pkg/seaice
1411      - removed GOTO's and added taf directives
1412      - double precision constants to reduce the g77 (Linux)
1413        to F77 (SGI) differences reported in release1_p8
1414    o tools/genmake
1415      - added SGI options
1416    o verification/testscript
1417      - updated to that of checkpoint47a_post
1418    o verification/global_ocean.90x40x15/input/eedata
1419      - modified for SGI f77 compatibility
1420    o verification/lab_sea
1421      - added description of sea-ice model
1422      - added missing matlab routines
1423      - added test of thermodynamics parallelization
1424    
1425    checkpoint47a_post
1426    o new pkg: aim_v23
1427     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1428       for now, keep the same surface forcing as before.
1429     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1430     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1431     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1432    o add diagnostic of surface correction term in monitor output
1433    
1434    o bulk_force and therm_seaice
1435    - Two packages:  bulk_force (Bulk forcing)
1436      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1437    - Earlier integration from Stephaine Dutkiewicz
1438      and Patrick Heimbach.
1439    - Two ifdef statements for compile time,
1440       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1441    
1442    checkpoint47
1443    differentiable version of checkpoint46n_post
1444    o bug fix in quasihydrostaticterms
1445    o * "clean" adjoint code (in terms of extensive recomputations)
1446        can now be obtained for all GMREDI options (i.e. for
1447        - GM_VISBECK_VARIABLE_K
1448        - GM_NON_UNITY_DIAGONAL
1449        - GM_EXTRA_DIAGONAL
1450        - GM_BOLUS_ADVEC )
1451      * However, wrong gradient check problem remains unsolved.
1452      * New CPP options have been introduced for different
1453        tapering schemes
1454    o external_fields_load now part of differentiation list
1455    o pressure needs multiple storing;
1456      would be nice to have store_pressure at beginning or
1457      end of forward_step, e.g. by having phiHyd global (5-dim.)
1458      (NB: pressure is needed for certain cases in find_rho,
1459      which is also invoked through convective_adjustment).
1460    o recomputations in find_rho for cases
1461     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1462    o #define ATMOSPHERIC_LOADING should be differentiable
1463    o ini_forcing shifted to begining of initialise_varia
1464    o Incorporating QNVS line search routines into MITgcm
1465      (this is separate code, and therefore not under pkg)
1466      lsopt/, optim/
1467    o Updated verification/carbon/
1468      - #define GM_VISBECK_VARIABLE_K
1469      - GM_taper_scheme    = 'ldd97'    
1470    
1471    checkpoint46n_post
1472    Merging from release1_p8:
1473    o verification/natl_box:
1474      updating new external_fields_load routine
1475    o New package: pkg/seaice
1476      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1477      The sea-ice code is based on Hibler (1979-1980).
1478      Two sea-ice dynamic solvers, ADI and LSR, are included.
1479      In addition to computing prognostic sea-ice variables and diagnosing
1480      the forcing/external data fields that drive the ocean model,
1481      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1482      The implied surface heat flux is then stored in variable
1483      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1484      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1485      non-local transport term.  Because this call precedes model
1486      thermodynamics, temperature under sea-ice may not be "exactly" at
1487      the freezing point by the time theta is dumped or time-averaged.
1488      N.B.: fairly large differences in accuracy occur across
1489            different platforms/compilers; comparison between
1490            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1491            generated output gives:
1492       T           S           U           V
1493      C D M    c        m  s        m  s        m  s        m  s
1494      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1495      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1496      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1497    
1498      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1499    o GAD:
1500      - generated new common blocks to account for call of
1501        same gad routines with differing traceridentities
1502        (needed to modify tracerIdentity indices in GAD.h)
1503      - generated separate common blocks for case useCubedSphereExchange
1504        (Department of Futurology)
1505      - parameter lists to gmredi_?transport: added tracerIdentity
1506      - added new key indices to tamc.h
1507    o external_fields_load:
1508      - added this routine to TAF list
1509      - needed to make some common blocks global and additional storing
1510        along the same lines as exf package (checkpoint_lev?_directives.h)
1511    o exf:
1512      updated external forcing package
1513      - bug fixes carried over from ecco-branch
1514        (missing OBCS_OPTIONS.h in two routines)
1515      - enable easy to use "no forcing".
1516      - added exf I/O for atmospheric loading
1517      - added exf I/O for runoff data
1518      - transfered scaling between exf <-> MITgcm to exf namelist
1519    o Adding new verification experiment global_with_exf.
1520      This verification experiment is almost identical to the
1521      global_ocean.90x40x15 experiment, except that it uses
1522      the exf (and cal) package instead of the
1523      external_fields_load routine (cf README file).
1524    
1525    checkpoint46m_post
1526    o modified testscript to return -- when there are no lines of "%MON" output
1527    o added new flag "quasiHydrostatic" for QH mode
1528      and new routine quasihydrostaticterms()
1529    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1530      New routine: mom_u_coriolis_nh()
1531    o fixed sign of non-hydrostatic metric terms in u and v equations.
1532      Depend on correct sign of gravitySign.
1533    o added work.pc* to .cvsignore in aim directories using ifc
1534    o introduced flag for controllin non-hydrostatic metric terms
1535    o removed gravitySign from PARM04
1536    o switched to g77/ifc from pgf77 in aim experiments
1537    
1538    checkpoint46l_post
1539    o made convective adjustment work with pressure coordinates:
1540     - changed the direction of k-loop in convective_adjustment.F for the
1541       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1542     - adjusted the reference pressure k-index in convective_adjustment.F
1543     - adjusted the convection condition in convect.F (in analogy to
1544       calc_ivdc.F)
1545     - convective_adjustment no longer computes anything on the halos
1546     - removed the warnings about negative salinity from find_rho.F and
1547       find_alpha.F; instead the new routine look_for_neg_salinity, called
1548       at the beginning of find_rho, find_alpha, and find_beta, does a
1549       check of the entire slice, if CPP-option
1550       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1551    checkpoint46l_pre
1552    
1553    checkpoint46k_post
1554    o fixed the verification/global_ocean.90x40x15 experiment:
1555     - new bathymetry (the world according to A., JMC, and M.)
1556     - new initial fields and forcing fields (*.bin files)
1557     - new POLY3.COEFFS (for the next release one should switch to a full
1558       equation of state: JMD95P or MDJWF)
1559     - fixed several errors and redundancies in the data file
1560     - experiment uses looped cells
1561     - added matlab directory with diagnostic scripts for plotting of output
1562    
1563    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1564     - read AIM physics parameters from a file (data.aimphys)
1565     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1566    
1567    checkpoint46j_post
1568    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1569    o move wVel computation at the end of the time step, in S/R integr_continuity
1570    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1571    o update timeave pkg for wVel diagnostic.
1572    checkpoint46j_pre
1573    
1574    checkpoint46i_post
1575    o Clean up AIM package (and keep the results unchanged):
1576      include CPP_OPTION and use IMPLICT NONE in all routines ;
1577      declare all the variables _RL ; use _d 0 for all numerical constants.
1578      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1579    
1580    checkpoint46h_post
1581    o cleaned up the use of rhoNil and rhoConst.
1582      - rhoNil should only appear in the LINEAR equation of state, everywhere
1583        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1584        and the dynamical equations are all divided by rhoConst
1585    o introduced new parameter rhoConstFresh, a reference density of fresh
1586      water, to remove the fresh water flux's dependence on rhoNil. The default
1587      value is 999.8 kg/m^3
1588    o cleanup up external_forcing.F and external_forcing_surf.F
1589      - can now be used by both OCEANIC and OCEANICP
1590    checkpoint46h_pre
1591    
1592     Added code to convert surface volume flux (fresh water) into
1593     a mass flux when using P coordinates in the ocean (OCEANICP).
1594     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1595    
1596    checkpoint46g_post
1597    o Include a new diagnostic variable phiHydLow for the ocean model
1598      - in z-coordinates, it is the bottom pressure anomaly
1599      - in p-coordinates, it is the sea surface elevation
1600      - in both cases, these variable have global drift, reflecting the mass
1601        drift in z-coordinates and the volume drift in p-coordinates
1602      - included time averaging for phiHydLow, be aware of the drift!
1603    o depth-dependent computation of Bo_surf for pressure coordinates
1604      in the ocean (buoyancyRelation='OCEANICP')
1605      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1606        Theta, Salinity, and Pressure in the parameter list. This routine is
1607        presently contained in find_rho.F. This routine does not give the
1608        correct density for 'POLY3', which would be a z-dependent reference
1609        density.
1610    o cleaned up find_rho
1611      - removed obsolete 'eqn' from the parameter list.
1612    o added two new verification experiments: gop and goz
1613      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1614    checkpoint46g_pre
1615    
1616    checkpoint46f_post
1617    o Enable tangent linear (forward mode) gradient checks:
1618      - extended active file handling to g_... files
1619      - added TANGENT_SIMULATION to theSimulationMode
1620      - extended grdchk package accordingly
1621    o added tangent linear setup in verification/carbon/code_ftl
1622    o added adjoint setup in verification/front_relax/code_ad
1623    
1624    checkpoint46e_post
1625    o Added new equation of state -> MDJWF
1626      - EOS of McDougall et al., 2002, JAOT, submitted
1627      - caveat: the equation of state is only valid for a smaller (more
1628        realistic?) range of values than JMD95P/Z and UNESCO
1629      - added masks to the calculation of pressure in store_pressure
1630      - added more check values for density in check_eos (ini_eos.F), some of
1631        the old check values are out of the range of the MDJWF-eos, so don't
1632        expect perfect matches for those
1633    checkpoint46e_pre
1634    
1635    checkpoint46d_post
1636    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1637      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1638      case of pressure coordinates. eosType='JMD95Z' in
1639      combination with buoyancyRelation='OCEANICP' now causes an error.
1640    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1641      in find_alpha/beta.
1642    checkpoint46d_pre
1643    
1644    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1645      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1646    
1647    checkpoint46c_post
1648    o Changes necessary for ocean in p-coordinates
1649     -  Added new buoyancy relation = 'OCEANICP'
1650     -  Added new parameters = gravitySign (this used to be contained inside
1651        the factor dRdZ which I added when we first switched to R coordinates).
1652     X GM/Redi is not compatible (yet)
1653     X bottom drag and no-slip need to be debugged.
1654    checkpoint46c_pre
1655    
1656    checkpoint46b_post
1657    o Added new equation of state -> JMD95Z and JMD95P
1658      - EOS of Jackett and McDougall, 1995, JAOT
1659      - moved all EOS parameters into EOS.h
1660      - new routines ini_eos.F, store_pressure.F
1661    o Added UNESCO EOS, but not recommended because it requires
1662      in-situ temperature (see JMD95)
1663    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1664      unesco.f to be used with POLY3
1665    checkpoint46b_pre
1666    
1667    checkpoint46a_post
1668    o Added (atmospheric) pressure loading
1669      - new field in FFIELDS.h, etc...
1670      - new cpp flag ATMOSPHERIC_LOADING
1671    o Changed hFacC to _hFacC in calc_phi_hyd.F
1672    o Added SHORTWAVE_HEATING to some files for consistency
1673    checkpoint46a_pre
1674    
1675    checkpoint46
1676    further merges from release1_p5
1677    o new ctrl package
1678      - adopted from ECCO environment to enable optimization
1679      - added Eliassen Palm fluxes to controls
1680    o added Eliassen Palm flux controls to gradient check package
1681    o cost package
1682      - Compatible with new ctrl package
1683      - added Eliassen Palm cost hooks
1684      - modif's of existing cost functions
1685    o Adjoint-related bug fixes in kpp:
1686      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1687      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1688    o autodiff package
1689      - flow directives:
1690        + new for S/R do_the_model_io
1691        + enhanced for S/R checkpoint
1692        + new gmredi.flow
1693      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1694        disable adcommon.h/g_common.h by default.
1695      - fixed problem for adjoint of global_max
1696    o modified verification/carbon/
1697    o New setup for adjoint of global_ocean
1698    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1699    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1700    o incorporated hooks for sponge layer code (external_forcing.F)
1701    
1702    checkpoint45d_post
1703    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1704    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1705      (affects plume_on_slope "cg2d" output)
1706    o add new parameter deltaTfreesurf for free-surface time stepping
1707    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1708  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
1709  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
1710  o add new flags:  o add new flags:

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