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revision 1.61 by heimbach, Fri Feb 15 21:31:57 2002 UTC revision 1.397 by mlosch, Wed Dec 1 22:54:42 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6  o real fresh water flux implemented with non-linear free-surface.  o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
7      is called from DO_THE_MODEL_IO
8      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
9      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
10      - clean up PTRACERS_WRITE_TIMEAVE a little
11    o add another verification experiment that tests both the cfc-pkg and
12      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
13      reactive tendencies treated inline with regular timestepping
14    o testreport previously did a lousy job of comparing small numbers, so
15      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
16      implemented in the little c-progam tmp_cmpnum.c which is embedded in
17      testreport.
18    o ptracers_monitor: bug fix for MPI
19    
20    checkpoint56a_post
21    o GCHEM: finish reorganizating the package
22      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
23        (introduces another 3D-array for each passive tracer, but only if
24        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
25        gchemTendency is not needed because the timestep is done separately)
26      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
27      - GCHEM is now---more or less cleanly---separate from PTRACERS
28      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
29        so clear to me how that should be done in a general way.
30    o CFC: improve formatting of output in CFC_ATMOS
31    o PTRACERS:
32      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
33        that ALL experiments with ptracers enable can be checked. This makes
34        GCHEM_MONITOR obsolete.
35      - include a runtime parameter PTRACERS_monitorFreq that defaults to
36        monitorFreq
37      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
38    o add PTRACERS (PTR0[1-5]) to testreport output
39    o exf_check_range:
40      * default changed to .TRUE.
41      * will check values for niter0 if debLevA, every timestep if debLevB
42      * STOP in exf_check_range if 'out of range'
43      * range chosen generous to allow for potential extema
44      TBD: a version with stricter range
45           permitted range would be runtime parameters
46    o GMredi:
47      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
48      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
49      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
50    o GCHEM:
51      - move call to GCHEM_FORCING_SEP, so that it is now called before
52        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
53      - introduced a useGCHEM runtime flag and applied it everywhere.
54      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
55        this flag is now only visible within GCHEM-pkg routines.
56      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
57        be replaced by a 3D array that is computed before thermodynamics; for
58        this, the tracer ID iTracer had to be included into the parameter list
59        of ptracers_forcing
60      - set up forward_step to call gchem_forcing, that will replace
61        gchem_forcing_int in ptracers_forcing
62      - cleaning up
63    o small cleaning of exch2: remove files that are also in eesupp/src
64    
65    checkpoint56
66    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
67    o mnc: cleanup "full" files--fixes out-of-memory problem
68    o ECCO-GODAE
69      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
70      * fully merged and updated from SIO code
71        windstress sign change affects
72        - exf_inscal_[u/v]stress
73        - sign of xx_tau[u/v] adjustments
74        - signs in cost_scat
75      * ctrl_get_gen: avoid update of tau[u/v] for first few days
76      * natl_box_adjoint updated and compressed
77      * 2-level checkpoint switch added
78        (tested in EXP. 1 of natl_box_adjoint)
79      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
80    o SVD
81      * first complete, non-hacked version for SVD calculations
82      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
83        performed via direct access files admtlm_vector.it????
84        (via ctrl_[un]pack)
85      * optimcycle is used for ARPACK iteration counter
86        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
87      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
88        and add linear transforms where necessary
89      * controls are initial/final SST, SSS (can be extended; need to check
90        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
91    o mdsio: filename info to both stderr, stdout
92    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
93      from sign change
94    
95    checkpoint55j_post
96    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
97      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
98    o add consistent build directories and .cvsignore files to verification
99    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
100    o make all subroutines 30 or less characters in length for certain older
101      compilers to work (a thorough search only turns up two routines in
102      pkg/ptracers)
103    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
104      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
105    
106    checkpoint55i_post
107    o change arrays for total vertical diffusivity (2.D if explicit,
108      3.D if implicit) ; each ptracer uses its own background value.
109    o added mnc/NetCDF output capability to ocn_compon_interf
110      - added bits to verification/cpl_aim+ocn so that it can run on
111        ITRDA and other clusters without the mpirun "-wd" option
112    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
113      configuration
114    o give MNC the ability to create additional files rather than
115      exceeding a specified file size limit "MNC_MAX_FILESIZE"
116      - the default is just less than 2GB which is a practical limit
117        on many systems
118    o Compute the non-local term using either KPP vertical diffusivity (=default)
119       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
120    
121    checkpoint55h_post
122    o add verification test "vermix"
123    o remove all the *_ioinc flags and replace with the single global
124      outputTypesInclusive flag
125    o allow to set a vertical profile of vertical diffusivity for T & S
126    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
127    o useMNC moved from data.mnc to data.pkg
128    
129    checkpoint55g_post
130    o Renaming carbon AD experiments to comply with testreport conventions
131    o Updating adjoint of Held-Suarez hs94.1x64x5
132    o Fixing directives for non-ECCO forward_step, after ECCO directives
133      have been fixed to avoid recomp. of do_oceanic_phys
134      Works well for global_ocean.90x40x15,
135      but recomp. issue remains for carbon
136    o Updating adjoint output for natl_box_adjoint after
137      pkg/ecco has been modified (see taga c55d_post)
138    
139    checkpoint55f_post
140    o rename to timeave_init_fixed
141    
142    checkpoint55e_post
143    o some delicate re-shuffle of store directives to avoid one
144      extra call of do_oceanic_physics
145      affects ecco_the_main_loop.F, do_oceanic_physics.F
146      checkpoint_lev1_directives.h
147    o NB: this may break global_ocean adjoint temporarily,
148      but it is clear how to fix it. Will do later, need this now.
149    
150    checkpoint55d_post
151    o ECCO specific cost function terms (up-to-date with 1x1 runs)
152    o ecco_cost_weights is modified to 1x1 runs
153    o modifs to allow observations to be read in as
154      single file or yearly files
155    o enable to read exf forcing fields as either
156      single file or yearly files (flag useExfYearlyFields)
157    checkpoint55d_pre
158    
159    o switch between 2-level and 3-level checkpointing
160    o add ability of MNC to write local and "partial" (eg. 2D slices where
161      the full 3D field is never actually stored) arrays to NetCDF files
162      with the correct (that is, the complete multi-dimensional) set of
163      array indicies
164      - used in mom_vecinv() to write the diagFreq output
165      - tested (demonstrated) in verification/aim.5l_cs
166    o further mnc-ification
167      - add verification/lab_sea to the list with mnc setups
168      - fix undefined mnc v-names in cd_code
169      - add kpp to mnc output (both snapshot and timeave)
170    o non-hydrostatic code
171      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
172        in calc_gw.F
173      - defaults to viscAh
174      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
175        friction or Leith) in non-hydrostatic mode, as long as there is
176        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
177    o pkg/cost
178      extend simple cost functions to treat time mean quantities
179      (T,U,V) via cost_accumulate_state from cost_tile
180    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
181        be 2 times larger than the minimum size the advection scheme requires.
182        now get a perfect conservation of salt in advect_cs test-exp (updated)
183    o GGL90 (Gaspar's TKE mixed layer)
184      - add horizontal diffusion of TKE, requires exchanges in
185        do_fields_blocking_exchanges, horizontal diffusivity is zero by
186        default. In OPA there is no horizontal diffusion of TKE but the
187        mixing coefficients are computed from a horizontal average of TKE of
188        6 points or so. I think that diffusion has a little more physical
189        justification.
190      - clean up ggl90_calc in the hope of reducing memory usage (this hope
191        was in vain)
192      - mask tke-variable in ggl90_init
193    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
194    o fix biharmonic diffusion on CS-grid.
195    o more obcs stuff
196      - added obcs_external_fields_load as an alternative to the EXF-pkg option
197        for reading boundary values. This routine is called from
198        obcs_prescribe_read
199      - updated obcs_check
200      - changed sponge layer relaxation parameter units for days to seconds
201      - turned off sponge layer by default
202      - changed argument list of OBCS_CALC to myTime+deltaTclock
203      - fixed about 35 bugs in obcs_external_fields_load
204    
205    checkpoint55c_post
206    o obcs stuff
207      - new runtime flags useOBCSprescribe, useOBCSbalance
208      - re-arranged obcs_calc
209      - moved exf_getobcs to obcs_prescibe_read
210        obcs_prescibe_read is called after ORLANSKI stuff
211        and independent of it (executable can contain all).
212      - updated obcs_check
213      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
214        These may be necessary only if tangential velocities are
215        prescribed at OB, not sure, needs testing.
216    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
217      which simplifies the calls and passes the ifc check-bounds test
218    
219    checkpoint55b_post
220    o add a 2D scalar, Z location, exchange_2 routine.
221    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
222      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
223      affects advect_cs results (for the wrong reason): update output.txt
224    o use a more standard discretization for biharmonic viscosity ;
225     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
226      affects results of dome set-up: update output.txt
227    o fix gad_advection.F (CubedSphere part), back to version 1.23
228    o fix bug in mom_vi_del2uv.F (CubedSphere part).
229    
230    checkpoint55a_post
231    o merged code to
232      * prescribe/read time-dependent open boundaries
233        (works in conjunction with exf, cal)
234      * sponge layer code for open boundaries
235      * each boundary N/S/E/W now has its own CPP option
236        (healthy for the adjoint)
237    
238    checkpoint55
239    o up-to-date adjoint of previous breaks
240      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
241      - global_ocean_ebm: adjoint still needs fix (TLM ok)
242      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
243      - carbon: * remove tr1-related adjoint verification
244                * add ptracer as control variable
245    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
246      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
247    
248    checkpoint54f_post
249    o in verification/carbin/ remove experiment related to
250      ALLOW_PASSIVE_TRACER (array tr1 etc)
251      code_ad/ input_ad/ results_ad
252    
253    o add two new packages
254      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
255        + subject to optimization (memory)
256      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
257        + subject to reordering (many GOTOs in the original code)
258        + so far opps is called for every (i,j) point, and then operates in
259          the vertical; one may want to reorder the scheme in order operate in
260          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
261          fields)
262    o overhaul of IO so that we now have flags for MDSIO and/or MNC
263      - all verification tests compile and run with linux_ia32_g77
264      - defaults are compatible with current input files--nothing
265        should change if you were not previously using MNC
266      - MNC output has been added in numerous places (eg. timeave)
267        but there are still a few writes not yet do-able with MNC
268        (this is in progress)
269      - flags now allow for either/or/both use of MDSIO and MNC and
270        documentation will soon follow
271      - numerous small formatting cleanups for ProTeX
272    o add version info (via BUILD_INFO.h) to MNC and stdout
273    
274    checkpoint54e_post
275    o add two new packages
276      - pp81 (Packanowski and Philander, 1981), Richardson number and
277        stratification dependent mixing
278      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
279      - these scheme operate in a similar manner as KPP (without ghat, of
280        course), however there is only one diffusivity that is used for both
281        temperature and salinity (and passive tracers)ç
282    o add offline package
283    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
284      provided by Stephanie Dutkiewicz
285    o genmake2: add ability to search for C compilers and cleanup test output
286      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
287    
288    checkpoint54d_post
289    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
290    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
291      leading to additional shift by 5 days each year of integration
292       (i.e. leading to considerable offset over the years)
293    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
294    o start with no AB and no initial filtering (staggerTimeStep):
295      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
296    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
297      (external loading & cpl import/export stay in forward_step.F)
298    o update coupling interface to work with new staggerTimeStep
299    o change MDSIO ptracers_pickup.
300    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
301    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
302    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
303    
304    checkpoint54c_post
305    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
306      this affects (truncation error) output.txt of test-exp:
307       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
308    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
309    o change Qnet to always be the net heat flux, (+upward).
310      affects (truncation error) output of natl_box exp.: updated
311    o define the max number of passive tracers in PTRACERS_SIZE.h
312    o start to test mnc routinely in exp0
313    o add sea-ice loading (sIceLoad) as a new forcing field.
314    
315    checkpoint54b_post
316    o add testreport "-j JOBS" option for parallel builds (tested and pretty
317       impressive on Altix and Opteron systems)
318    o diagnostics can now write NetCDF files through the mnc package
319    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
320    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
321    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
322      affects (truncation error) output of lab_sea & natl_box exp.: updated
323    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
324    
325    checkpoint54a_post
326    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
327    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
328    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
329    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
330      + internal_wave (shift in writing cg2d_ini_res)
331    checkpoint54a_pre
332    
333    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
334      - modified verification/lab_sea and natl_box_adjoint accordingly
335    
336    checkpoint54
337    checkpoint53g_post
338    o prepare splitting of thermodynamics: store convect.counter in common block
339    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
340      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
341    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
342    o new parameter "nShapS": allow to treat differently S from T (nShapT)
343    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
344    o restore adjointability
345    
346    checkpoint53f_post
347    o modifications that affect AIM experiment results (update output.txt):
348      - no advection of S at top interface Nr (pkg/generic_advdiff)
349      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
350    o AIM pkg:
351      - include stability function into surf.Flux derivative relative to Tsurf
352      - calculate clear-sky radiation & surface temp. change (for diagnostics)
353    
354    checkpoint53e_post
355    o merged cylindrical coord configuration
356    o added rotating_tank experiment
357    checkpoint53e_pre
358    
359    checkpoint53d_post
360    o faulks upgraded: re-generate output.txt that have changed:
361       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
362    o Added Bryan and Lewis, 1979, vertical diffusivity profile
363    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
364    o added Sadourny discretization of Coriolis
365      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
366      - re-enabled use of omega3 (useAbsVorticity)
367    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
368      vector-invariant equations
369      - note: does *NOT* yet use same variable visc. for no-slip BC's.
370    o recoded the lateral boundary conditions for non-hydrostatic w, this time
371      hopefully without new bugs
372      - still to do: biharmonic friction for non-hydrostatic w
373    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
374    o regenerated output for global_ocean_ebm (using -ieee)
375    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
376      of mom_common/
377      - simple re-arrangement of instructions within computing loop
378    checkpoint53d_pre
379    
380    checkpoint53c_post
381    o new version of coupler for AIM+thSIce and Ocean models
382     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
383     - land: change Evaporation of snow
384     - aim with thSIce: fix bug in snow-precip.
385    o changes to calc_gw.F
386     - bug fix for w^2 term near the bottom boundary
387     - (hopefully) improve the lateral slip boundary condtions for use with
388        partial/looped cells
389      - because the bug fix changes two verification experiments anyway (exp5
390        and plume on slope), change the lateral boundary condition from half slip
391        to the value of no_slip_sides
392    o ebm package wasnt quite up to the parallel task. Fixed that.
393    o Adjoint of EBM package + verification
394      * TLM OK
395      * ADM not sufficient accuracy yet (needs further testing)
396    
397    checkpoint53b_post
398    o Commiting new energy balance model to repository
399      * package is pkg/ebm
400      * verif. is verification/global_ocean_ebm
401      * references are in ebm_driver.F
402    C      * X. Wang, P. Stone and J. Marotzke, 1999:
403    C        Global thermohaline circulation. Part I:
404    C        Sensitivity to atmospheric moisture transport.
405    C        J. Climate 12(1), 71-82
406    C      * X. Wang, P. Stone and J. Marotzke, 1999:
407    C        Global thermohaline circulation. Part II:
408    C        Sensitivity with interactive transport.
409    C        J. Climate 12(1), 83-91
410    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
411    C        Destabilization of the thermohaline circulation
412    C        by atmospheric eddy transports.
413    C        J. Climate 7(12), 1870-1882
414    o Will need long integration testing.
415    checkpoint53b_pre
416    
417    o created pkg/mom_common in preparation for variable viscosity code
418    o renamed and split ini_mnc_io
419    o pkg/land: only liquid water can diffuse or run-off
420    o AIM using land: soil wetness availability account for snow
421    o added printMapIncludesZeros to EEPARMS namelist
422    
423    checkpoint53a_post
424    o restore TAMC compatiility for exf_constants.h
425      (no usage of _d in .h)
426    o Additional storing in KPP in an attempt to fix
427      TAMC problem with adjoint of KPP code.
428      (no success...)
429      Identical code works fine with TAF.
430    o Fixed verification/natl_box_adjoint experiments.
431      Initial conditions for Experiments 4 and 5 are now
432      set to "SEAICE_initialHEFF=0", which is more reasonable,
433      and hence gives results closer to that of Experiment 2.
434      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
435    
436    checkpoint53
437    o stable checkpoint with up to date adjoint
438      TLM tests only run for 1st grdchk at the moment. Its unclear if
439      this is a code problem or a problem with resetting code for g_
440      variables that is being autogenerated wrong.
441      Otherwise:
442       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
443       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
444         are both still in chaos following their security messes.
445    
446    checkpoint52n_post
447    o various build (mostly genmake2) changes including:
448      - ability to build/run more easily within Cygwin and MacOS X
449      - more complicated Makefiles with a stronger dependence on Gnu Make
450    o pkg/seaice modifications
451      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
452        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
453        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
454      - changed proxy for geostrophic velocity and updated
455        verification/lab_sea/results/* accordingly
456      - removed ADI dynamic solver from pkg/seaice
457      - replaced all occurrences of 1/CSTICE or 1/CSUICE
458        they caused a segmentation fault under certain circumstances
459      - removed unused field WATR
460    o bug fix in exf-package:
461      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
462         now reflect that.
463    o small fixes in the cal-package:
464      - set reference date to first of January for the 'model'-calendar
465      - failing of cal_CheckDate in cal_FullDate now actually results in a
466        warning
467    o small modifications in exf-package to increase flexibility:
468      - change climtempfreeze from a constant to a runtime parameter that
469        is specified in data.exf_clim (default = -1.9)
470      - introduce runtime parameter windstressmax (default = 2.0) that is
471        specified in data.exf
472    o fix in pkg/thsice:
473      - update Evap (Tsf changes) to be consistent with Latent heat flux
474      - maintain snow precipitation unchanged (even if Tsf >=0).
475     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
476    
477    checkpoint52m_post
478    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
479      this does not change any of the results, because myIter=0 in swfrac always
480      lead to jwtype=2 (the default anyway), but the call makes little sense
481      as a default
482    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
483    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
484      atmospheric model (AIM) to use it ; add a "slab ocean" component.
485    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
486    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
487    o extending useSingleCpuIO option to work with new exch2 I/O format
488      - old-style, missing-tile I/O is still accessible by defining CPP
489        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
490    o monitor package can write to NetCDF files and/or STDOUT
491    o fix re-definition bug in MNC_GRID_INIT_ALL()
492    o doc/api_reference added
493      - a framework for building an API Reference Manual using all
494        the "protex" comments embedded in the code
495      - see pkg/generic_advdiff, pkg/mnc for examples
496    o MNC:
497      - make myThid the last argument for all subroutines
498      - new default for the grid files: NO halos
499      - add useMNC and other run-time flags
500      - separate per-file-group handling of the unlimited dimension
501      - early initialization of MNC w/ flags read at the eeboot stage
502        and lookup tables set in initialize_fixed
503      - write all MNC output to a freshly-created directory
504    o thermodynamics sea-ice (thsice) is now tested with testreport.
505    o test exp. advect_cs: use the standard cs32 grid ; update output.
506    o Added functionality to grdchk:
507      pick global i,j,k position (or nearest wet) where to perform check.
508    
509    checkpoint52l_post
510    o new land formulation:
511      a) use ground enthalpy as prognostic variable to ensure exact
512         energy conservation.
513      b) account for water temperature and for latent heat of freezing
514         in all processes (rain, run-off, ground storage)
515      c) compute surface and ground temperature implicitly.
516    o aim_v23 modification for new land model:
517      a) Treat separately land / ocean / sea-ice surface fluxes
518         to allow implicit computation of land & sea-ice surface temp.
519      b) add snow precipitation.
520    checkpoint52l_pre
521    
522    o fix problem (when 1 tile is empty) in min/max monitor.
523    o fix bug in timeAve (u,vZetatave in common block)
524    o no restoring terms under ice for pkg/seaice
525    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
526    o bug fix for pkg/seaice pickups
527    o change MNC call locations and add coordinate attributes
528    o mask vorticity at the corner ; affects global_ocean.cs output
529    o fix ini_curvilinear_grid ; test CS experiments with mpi
530    o aim.5l_cs: modify sea-ice fraction input file ; update output
531    o exf: Adding simple range check routine for exf fields after read
532    
533    checkpoint52k_post
534    o removed top-level directory "diags"
535      - we migrated these functions to pkg/timeave a long time ago
536    o fixed bug introduced in pkg/monitor
537    o accuracy ctrlprec = 32 insuffient for gradient checks using
538      averaged fields (I/O via cost_averages)
539      -> use ctrl.h in active_file*.F to control I/O precision.
540    o paramter list of CALL ADTHE_MAIN_LOOP
541    o added initial do_the_model_io to ecco
542    o set all ...Freq to zero after cost_final
543      taveFreq, dumpFreq, pChkptFreq
544    o MAIN and ECCO differentiability restored
545    
546    checkpoint52j_post
547    o fix nchklev in tamc.h for global_ocean...
548    o Bringing flow and store directives up-to-date
549    o Really weird thing!
550      call do_the_model_io from the_main_loop with parameters
551      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
552      TAF places a faulty re-call of initialise_varia
553      after cost_final call which should not be there!
554    checkpoint52j_pre
555    
556    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
557      error messages
558    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
559    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
560      debug output
561    o modfied mdsio_writefield.F to handle non-global files under exch2
562    o update AIM Cubed-Sphere exp (aim.5l_cs):
563      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
564    o update AIM Equatorial Channel exp:
565      use standard aim_v23 pkg and change the SST fields to be more realistic.
566    o globalFile now works with exch2
567    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
568      mon_vort3.F to make exch2 friendly with >1 tile per cube face
569    o limit timeave output for hi-res integrations
570    
571    checkpoint52i_post
572    o removed CPP_EEOPTIONS.h from verification/*/code
573    o updated the tiling for global_ocean_pressure
574    checkpoint52i_pre
575    
576    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
577      the old pkg/aim).
578    
579    checkpoint52h_pre
580    o shortened offending lines in exch2_send_rx?.template
581    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
582    o genmake2: add build & execute test for NetCDF code
583    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
584      old grid files, moved CPP_EEMACROS.h to pkg/exch2
585    o added useSingleCPUIO flag to monitor.F and mon_out.F
586    o added temporary hack for sea-ice dynamics on the cube:
587      metric terms are ignored and it is assumed that
588      there is no sea-ice on cube faces 1, 2, 4, and 5.
589    
590    checkpoint52f_post
591    o added exch2 cube routines to pkg/exch2
592    o modified hs94.cs-32x32x5 to use it
593    o added new grid files to hs94.cs-32x32x5
594    checkpoint52f_pre
595    
596    checkpoint52e_post
597    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
598      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
599    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
600      to work with implicit vertical advection and AB ;
601    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
602    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
603     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
604    checkpoint52e_pre
605    
606    o fix bug in impldiff when Nr=1 or Nr=2.
607    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
608    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
609    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
610      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
611    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
612    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
613    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
614    
615    checkpoint52d_post
616    o re-tiled many expts to allow comparison in multi-processor mode
617      - updated output accordingly
618      - changed hs94.128x64x5 to use intial T from file rather than use the
619        random number generator
620    o add infrastructure in model routines for fizhi and gridalt packages
621    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
622    o changes to permit hi-res, cubed-sphere, configuration
623      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
624      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
625      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
626        of surface winds for the cube
627      (A verification experiment, based on global_ocean.cs32x15, but with
628       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
629       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
630       complete with example surface forcing files and matlab scripts to look
631       at the output and compare it with that of global_ocean.cs32x15.)
632    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
633       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
634       to conform to the common rule.
635    o check-in the first version of the coupler + interfaces for multi-components
636       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
637       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
638       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
639       - ocean and atmos. share the same horizontal grid (no interpolation).
640       - exchanges between component and coupler is done in forward_step
641    o new verification experiment, cpl_aim+ocn:
642       coupled ocean - AIM atmosphere on cs32 grid.
643    
644    checkpoint52d_pre
645    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
646    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
647    
648    checkpoint52c_post
649    o Fixing OPTIONS files for use of exf:
650      - ALLOW_ECCO not needed
651      - ECCO_CPPOPTIONS.h should not be included from
652        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
653        as has been the case in the past
654      - All cal/exf related options are currently set in
655        single header file. Should remain so until we
656        agree on a consistent new policy.
657    o Removed all CPP options for cal package.
658      cal has no more CPP options.
659    o modified STOREs in GAD_ADVECTION
660    o corrected key comp. for passkey
661    
662    checkpoint52b_post
663    o new version: "thsice" of thermodynamic sea-ice pkg:
664     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
665     - modify fluxes but do not change theta directly;
666     - light cleaning of bulk_force pkg (still needed with thsice).
667     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
668       + output_thsice.txt to test thsice & bulk_force pkgs.
669    o put back grid & coriolis monitor output.
670    checkpoint52b_pre
671    
672    o call "do_the_model_io" at the beginning (=> dump initial state)
673    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
674    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
675      (need info on NUMBER_OF_PTRACERS)
676    o missing PTRACERS headers in some routines
677    o default tamc.h in pkg/autodiff supposed to crash
678      to ensure proper customization
679    
680    checkpoint52a_post
681    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
682      - moved surfaceTendencyTice from pkg/seaice to main code
683      - subroutine FREEZE_SURFACE now limits only surface temperature
684        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
685        => new output.txt for global_ocean.cs32x15 & global_with_exf
686      - keep the old version of FREEZE for backward compatibility;
687        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
688      - corresponding modifs for TAF directives
689    o added surface flux output variables to TIMEAVE_STATVARS
690    o time-averaged output for pkg/ptracers
691    o fix problem with ECCO-related divided adjoint
692      snapshot file was missing some ad-variables,
693      but no warning issued by TAF
694    
695    checkpoint52a_pre
696    o some bug fixes for #undef REAL4_IS_SLOW
697    
698    checkpoint52 = ecco_c52_e35
699    o after testing adjoints of checkpoint51u_post
700    
701    checkpoint51u_post
702    o this is the post-merge tag of the ecco-branch
703      (needs another clean checkout and re-testing)
704    o various natl_box_adjoint configs and results
705      but no input fields
706    o obcs adjoint not yet merged!
707    o adding ECCO global 1x1 and 2x2 degree configs
708    o updated/extended some store directives for seaice
709    o pkg/ecco now containes ecco-specific part of cost function
710    o top level routines the_main_loop, forward_step
711      supersede those in model/src/
712      previous input data.cost now in data.ecco
713      (new namelist ecco_cost_nml)
714    o in ctrl/ cleaned some cross-dependencies and updated CPP options
715    
716    checkpoint51t_post
717    o this is the pre-merge tag of the ecco-branch
718    
719    checkpoint51s_post
720    o cleanup: removed various obsolete #define-s
721    o pkg/grdchk
722      - renamed 'ph-grd 3' to 'grad-res'
723      - merged from ecco-branch
724        (remaining bug fixes for obcs gradient checks)
725      - additional high-precision output for testreport
726        (grep for 'precision_grdchk_result')
727    
728    checkpoint51r_post
729    o cleaned up or removed CPP_OPTIONS.h files
730    o updated results for some of the tests to reflect the new
731      optfiles (-ieee: -O0 instead of -O3)
732    
733    checkpoint51q_post
734    o cd_code:
735      - moved cd_scheme.F -> cd_code_scheme.F
736      - separate read_checkpoint from cd_code_ini_vars.F
737      - separated cd_code part from write_checkpoint
738      - updated AD_SOURCE, generated .flow
739      - added CD_CODE_VARS.h to the_main_loop
740      - Moving cd_code specific store dir.s to pkg/cd_code
741    o ctrl package totally restructured
742      - pack/unpack now optional and decoupled from
743        xx_/adxx_ I/O
744      - ctrl_pack/unpack cleaned
745        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
746      - confined inclusion of AD_CONFIG.h to where necessary.
747    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
748    
749    checkpoint51p_post
750    o create initial cd_code package
751      - WARNING: the initialization of fields within packages
752        is broken because INI_FIELDS (where READ_CHECKPOINT is
753        called) is called *before* PACKAGES_INIT_VARIABLES.
754        This seems to be backwards since
755        1) its important to initially zero the entire field including
756           the "halo" region
757        2) zeroing needs to be done *before* reading pickup info
758           and the pickup call might or might not happen in any
759           particular run
760      - this needs an overhaul for R2
761    o cleanup verification/*/code/GMREDI_OPTIONS.h
762    o cleanup testreport
763    
764    checkpoint51o_post
765    o bringing AD-related verif's up to date with genmake2
766      - carbon/
767      - global_ocean.90x40x15/
768      - hs.94.1x64x5/
769      - (front_relax/ )
770    o (more) consistent directory structure for AD-related verif.'s
771    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
772    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
773    o bug fix in find_alpha.F for MDJWF:
774      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
775        change rho -> rho-rhoConst
776      - replace call find_rho to find_rhonum
777    o initialisation of rFlx extended to full array (required by TAF)
778      and shifted to thermodynamics
779    o removed PTRACERS.h in ptracers routine
780    o added surfacetendencyPtr to S/R parameter list pracers_forcing
781    o Correcting initialisations for fVerU, fVerV.
782    o helping TAF to recognize dependency on kUp for
783      fVerU, fVerV
784    o Replacing delZ by delR in pkg/ctrl/
785    checkpoint51o_pre
786    
787    o undid all of cp51 pending some cleanups and discussion
788    o added the [#include "AD_CONFIG.h"] statement to all files that need
789       it for adjoint/tl #defines
790     o re-worked the build logic in genmake2 to support AD_CONFIG.h
791     o removed tools/genmake since it no longer works
792    
793    checkpoint51n_post
794    o modifications to make FREEZE flux visible to pkg/kpp
795      - moved surfaceTendencyTice from pkg/seaice to main code
796      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
797      - subroutine FREEZE now limits only surface temperature
798        (this means new output.txt for global_ocean.90x40x15,
799         global_ocean.cs32x15, and global_with_exf)
800    o added surface flux output variables to TIMEAVE_STATVARS
801    
802    checkpoint51n_pre
803    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
804    o added [#include "AD_CONFIG.h"] to all files that use the following
805      defines:
806      - ALLOW_ADJOINT_RUN
807      - ALLOW_TANGENTLINEAR_RUN
808      - ALLOW_ECCO_OPTIMIZATION
809    
810    checkpoint51m_post
811    o incorporating changes to get TAMC/TAF working in genmake2
812      - added new TAMC/TAF targets to the Makefile
813      - various cleanups related to package handling
814      - these changes should have no impact on the forward model
815    
816    checkpoint51l_post
817    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
818     - faster algorithm for cal_addtime.F
819     - higher precision arithmetic, where needed
820     - pkg/exf *startdate variables changed from calendar date to
821       model integration time
822    
823    checkpoint51l_pre
824    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
825    o enable to apply restoring on S & T only in a latitude band.
826    o update output (external_forcing_surf modif. change truncation errors)
827       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
828    
829    checkpoint51k_post
830    o change default to: useNHMTerms=.FALSE.
831     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
832       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
833     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
834        exp1, ideal_2D_oce
835     - change data file of oceanic exp (leave the results unchanged for now)
836       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
837    o set gravitySign automatically according to the vertical coordinate used
838      (and change sign: back to "logical" value: +1 when R increases downward)
839    o added an include barrier to the default CPP_OPTIONS.h and
840      removed the #include "PACKAGES_CONFIG.h" from it
841    o fix a bug in mom_fluxform (from chk51j_post)
842    
843    checkpoint51j_post
844    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
845    o adjusted some flow directives (dynamics, thermodynamics)
846    o added cubed-sphere case to test cost function
847    o heckpoint_lev?_directives.h now include
848      pkg-specific directives, whenever those are enabled.
849    o Moving pkg-specific flow directives to corresponding pkg
850      Moving pkg-specific differentiation list to corresponding pkg
851      Moving pkg-specific checkpoint-lev storing to corresponding pkg
852      ---> conventions are
853           - pkg_ad.flow
854           - pkg_ad_diff.list
855           - pkg_ad_check_lev?_dir.h
856    
857    checkpoint51i_post
858    o merge of the branch-genmake2
859      - knowingly breaks the older genmake
860      - automatic generation of all ALLOW_${PKG_NAME} defines
861      - new testreport supersedes older testscript
862    o large number of package inclusion and header cleanups
863    checkpoint51i_pre
864    
865    o new output for adjoin of global ocean vector invariant
866    o fix for checkpoint of thermodynamic seaice and bulk_force
867    o Steph gchem various cleanups
868    
869    checkpoint 51h_pre
870    o fixed some single quotes
871    o modify gchem pkg to be more versatile
872    o modifications to clean up dic pkg
873    o add pkg/cfc
874    
875    checkpoint51g_post
876    o provide links for ARPACK and ADM*TLM
877    o start removing verification/vero/
878    o update AD-related stuff
879      (in particular some IF-statements in model/src/ routines)
880    o adding to verification/global_ocean.90x40x15/ adjoint of
881      vector invariant setup
882    
883    checkpoint51f_post
884    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
885    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
886      of tracer Green's fucntions for ocean inversion project.
887    
888    checkpoint51f_pre
889    o Added on-the-fly spatial interpolation capability
890        "USE_EXF_INTERPOLATION" to pkg/exf.
891      - This is a temporary Cartesian-grid hack until
892        the super-duper ESMF coupler becomes available.
893      - See verification/global_with_exf/README for usage example.
894      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
895        flags and modified pkg/seaice accordingly.
896    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
897        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
898        non-local transport term.
899    
900    checkpoint51e_post
901    o pkg/mom_vecinv:
902      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
903      - add time-ave diagnostic of vorticity advection.
904    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
905    o atmospheric geopotential: - include water vapor effect;
906                                - use p^kappa in p* scaling.
907    o land pkg: read initial state from files.
908    o AIM : add stratospheric drag in the upper level
909    
910    checkpoint51d_post
911    o change function ILNBLNK (=> last non-blank char.) to return zero
912      (instead of the string length) when the string. char is empty
913    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
914    o modif's to restore TAMC compatibility
915      - avoid "_d" constructs in PARAMETER declarations
916      - avoid interrupting lines by comment lines
917    o Use cluster local disks for purely local I/O
918      vs. globally visible disks needed for ctrl stuff
919      (merged from ecco-branch)
920      - new active_file_loc... and mdsio_..._loc routines
921      - affected packages: autodiff, ctrl, grdchk, mdsio
922    
923    checkpoint51c_post
924    o introducing integer flag debugLevel
925      - debLevZero: suppress all output
926      - debLevA: standard
927      - debLevB: equivalent to current debugMode=.TRUE.
928    o introducing pathname variable mdsioLocalDir for mdsio
929      that can be specified at runtime
930      (relevant for cluster I/O to local disk)
931    `
932    >>>checkpoint51b_post
933    adjoint of ptracers
934    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
935    o extended state in checkpoint_lev?, etc.
936    o alternative ctrl/cost with tr1 or ptracer
937    o new comlev1_bibj_ptracers
938    o new ptracers.flow
939    o made ptracers_forcing same as external_forcing_s
940    o added verification for adjoint with ptracers
941      - adm. grdchk fail so far
942      - tlm. grdchk OK
943      - checked tapelev/comlev recomputations: OK
944    <<<checkpoint51b_pre
945    
946    checkpoint51a_post
947    o added code for biogeochemistry package
948      - new pkgs: dic, gchem
949      - new subroutine in ptracers
950    o modify code for biogeo packages
951      - in model/src and pkg/ptracers
952    
953    checkpoint51
954    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
955      - autodiff, ctrl, exf, grdchk, seaice
956      kept separate packages
957      - cost, ecco, obcs
958    o updating verification/internal_wave, verification/lab_sea
959      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
960    
961    checkpoint50i_post
962    o Preparing next differentiable checkpoint and sync
963      of MAIN vs. ecco-branch
964      - 1st step: this one is differentiable
965      - 2nd step: next(! not this) checkpoint will have updated packages
966                  from ecco-branch)
967    
968    checkpoint50h_post
969    o new package "land": provide surface BC for AIM.
970    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
971    o AIM: use true log-P extrapolation for near surface temp (= as in
972        F.Molteni paper) ; update aim.5l_cs output.
973    o New variable in PARM03 for more flexible pickups
974    o somewhat cleaned package initialisation sequence for
975      ctrl/ cost/ ecco/ in packages_... routines
976    
977    checkpoint50g_post
978    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
979      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
980      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
981        made the default because of faster convergence than ADI
982    
983    checkpoint50f_post
984    o exf totally restructured
985      - replaced all exf_set_ routines by one generic exf_set_gen.F
986        and made sure it's still differentiable
987      - split exf_getffields.F into new exf_bulkformulae.F
988      - exf_inscal_/exf_outscal_ suffixes consistent with field names
989      - updated adjoint/makefile and relevant verif. accordingly
990    
991    checkpoint50f_pre
992     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
993          + change Evap over land. (update aim.5l_cs output)
994     o added missing .cvsignores and made uniform across expts
995     o changed configuration of tidal_basin_2d expt
996     o added pkg/debug functions for tracing code in fatal crashes
997     o tidied pkg/monitor to use MONITOR_OPTIONS.h
998     o new fn in pkg/monitor to stop model if solution grows too big
999     o removed lots of single quotes from comments
1000    
1001    checkpoint50e_post
1002    o make KPP work with PTRACERS
1003     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1004       nearly a copy of kpp_transport_s
1005     - there is no analogue to SurfaceTendencyS, so I have to use
1006       gPtr(of the surface layer) instead
1007    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1008    checkpoint50e_pre
1009    
1010    checkpoint50d_post
1011    o change kpp output from multiple-record state files to single-record state
1012      files analogous to write_state.F
1013    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1014      analogous to the cg2d-related output.
1015    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1016      so that writing to internal file fn (with length 512) fails.
1017    checkpoint50d_pre
1018    
1019    checkpoint50c_post
1020    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1021    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1022    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1023    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1024    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1025    
1026    checkpoint50c_pre
1027    Merging from release1_p13:
1028    o bug fix for pkg/seaice dynamic solver
1029    o Added SEAICE_initialHEFF to pkg/seaice
1030    
1031    checkpoint50b_post
1032    o store u*,v* in gU,V instead of in guNm1,gvNm1
1033    o in order to put the momForcing out of the Adams-Bashforth:
1034      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1035      to timestep.F
1036    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1037    o re-generate output for highly sensitive test-exp:
1038       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1039    
1040    checkpoint50b_pre
1041    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1042    o corrected CPP option mismatch in exf_Bulk... functions for case
1043      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1044    
1045    checkpoint50a_post
1046    o Bug fix for merging between c50 and KPP.
1047      ikey was passed from thermodynamics to kpp_calc via
1048      common block rather than being recomputed in kpp_calc,
1049      in contradiction with new key itdkey.
1050      New key ikppkey created, and tamc.h headers updated.
1051    
1052    checkpoint50
1053    - 2nd step of merge with ecco-branch:
1054      merge changes in ecco-branch back into main trunk
1055    - bug fix in find_alpha
1056    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1057    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1058    - merged some sliced AD support routines
1059    
1060    checkpoint49
1061    merged from ecco-branch:
1062    o exf:
1063      - Enable initialisation of forcing fields to constant
1064        (runtime) values.
1065      - in exf_getffields.F
1066        Reduce i-/j-loop to interior domain, discarding overlaps.
1067        That also fixes wrong TAF-key computations for key_1, key_2
1068        with bulf formulae.
1069      - exf_init.F modify #ifdef for exf_init_evap
1070      - exf_getffieldrec.F, ctrl_getrec.F
1071        The following INT-usages are not safe:
1072          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1073          fldcount = int(fldsecs/fldperiod) + 1
1074        and were modified.
1075    o autodiff: checkpoint_lev...
1076      - updated storing for bulk formulae (some arrays were missing)
1077      - added state for seaice package
1078      - synchronized with main branch
1079    o DIVA:
1080      Modif.s in
1081      - the_main_loop.F
1082      - the_model_main.F
1083      and added cost_final_restore.F cost_final_store.F
1084      o With these changes, it is possible to fully separate
1085        the first forward run to compute the cost function (mdthe_main_loop)
1086        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1087        into separate model executions.
1088        This enables better tuning of DIVA to given queue sizes.
1089      o Loss of cost function value in consecutive DIVA runs is
1090        fixed by storing to 'costfinal' file.
1091      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1092        beginning/end of adjoint integration is accounted for.
1093      The current changes apply to TAF-1.4.26.
1094      TAF has one remaining bug, requiring one manual change
1095      (see MITgcm manual).
1096    o cal: synchronized between MAIN and ecco-branch
1097    
1098    checkpoint48i_post
1099    o Changes to restore differentiability of code w.r.t. previous tag
1100      (mostly adding new routines to make list and replacing
1101      pressure by totPhiHyd).
1102    o Updated and merged grdchk package
1103      - has both ADM and TLM checks
1104      - works for single- and multi-proc.
1105      - output cleaned
1106      - worked successfully for parallel DIVA
1107    o genmake:
1108      - Adding -platform=SP4
1109      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1110    o Modif. for DIVA:
1111      ctrl_unpack should not be called in intermediate DIVA interval.
1112      (similar thing would apply for active files such as
1113      tbar, sbar, psbar, which should not be reinitialised;
1114      only relevant for ecco-branch)
1115    
1116    checkpoint48h_post
1117    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1118    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1119    o Added SEAICE_initialHEFF to pkg/seaice
1120    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1121    
1122    checkpoint48g_post
1123    --- EOS:
1124    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1125      store total Potential in totPhyHyd for diagnostics & EOS.
1126    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1127    --- Pressure/geopotential gradient:
1128    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1129    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1130      ( changes results of global_ocean_pressure )
1131    o NLFS + z-coord.: add eta*Rho' contribution.
1132    o accurate phiHyd when using interface-W at the middle between 2 centers
1133     ( changes results of ideal_2D_oce )
1134    o includes r* 2nd term in potential gradient.
1135    
1136    checkpoint48f_post
1137    Merging from release1_p12:
1138    o Modifications for using pkg/exf with pkg/seaice
1139      - improved description of the various forcing configurations
1140      - added basic radiation bulk formulae to pkg/exf
1141      - units/sign fix for evap computation in exf_getffields.F
1142      - updated verification/global_with_exf/results/output.txt
1143    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1144      (SBO) core products, including oceanic mass, center-of-mass,
1145      angular, and bottom pressure (see pkg/sbo/README.sbo).
1146    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1147      to avoid negative values in shallow regions.
1148      - updated verification/natl_box/results/output.txt
1149      - updated verification/lab_sea/results/output.txt
1150    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1151    o Added useSingleCpuIO option (see PARAMS.h).
1152    o Updated useSingleCpuIO option in mdsio_writefield.F to
1153      work with multi-field files, e.g., for single-file pickup.
1154    o pkg/seaice:
1155      - bug fix in growth.F: QNET for no shortwave case
1156      - added HeffFile for specifying initial sea-ice thickness
1157      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1158    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1159      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1160    o pkg/seaice:
1161      - adjoint-friendly modifications
1162      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1163    
1164    checkpoint48e_post
1165    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1166    o dynamics: change definition of computational domain & adapt mom_fluxform
1167      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1168    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1169        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1170        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1171        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1172        inverted_barometer solid-body.cs-32x32x1
1173      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1174    
1175    checkpoint48d_post
1176    o in preparation for r*:
1177     a) use pre-computed gradient of hydrostatic potential:
1178        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1179     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1180        => affects results of glob_oce_pressure (different truncation error)  
1181      update output.txt of ideal_2D_oce & global_ocean_pressure
1182    
1183    checkpoint48d_pre
1184    o in preparation for r*:
1185      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1186      pass the 2 comp. of the grad. as arguments to momentum S/R.
1187      but for the moment, only used if it does not change the results.
1188    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1189    
1190    checkpoint48c_post
1191    Modifications in treatment of initial flux forcing controls
1192    to avoid extra storing of flux fields.
1193    
1194    checkpoint48c_pre
1195    o Added tidal_basin_2d experiment (currently 1D!)
1196    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1197    
1198    checkpoint48b_post
1199    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1200     (modification to pressure gradient not yet implemented)
1201    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1202      (for U & V) that are used for vertical advection of momentum.
1203    
1204    checkpoint48a_post
1205    o In preparation for r*, use temp. array to compute vertical transport
1206       in flux-form momentum pkg. => change results of few test-exp.
1207      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1208                        lab_sea, natl_box & plume_on_slope
1209    
1210    checkpoint48
1211    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1212    
1213    checkpoint47j_post
1214    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1215    o moved adexch from forward_step to addummy_in_stepping
1216    o added exch in ctrl_map_...
1217    o aveFreq.=0. at end of cost_final to avoid overwrite in
1218      reverse checkpointing loop
1219    o Yet more changes in gmredi:
1220      * adgmredi_calc_tensor
1221        avoiding all recomputation of gmredi_slope_limit
1222      * adgmredi_x/y/rtransport
1223        added flag for excessive storing to avoid recomp. of
1224        u/v/rtans, dTdx/y/z
1225        -> this is not really necessary and very memory-consuming
1226      * adgmredi_slope_psi:
1227        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1228      * gmredi_slope_limit
1229        re-activated full calculation of taperfct for case 'ac02'
1230    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1231    
1232    checkpoint47i_post
1233    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1234    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1235      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1236    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1237    o gmredi: fix few bugs.
1238    
1239    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1240    This will be a good checkpoint to plug into the ecco-branch.
1241    o few modif.'s to get latest version adjointed
1242      (mainly kick out code in ini_linear_phisurf)
1243    o modif's to run adjoint with exactConserv
1244    o case GM_BOLUS_ADVEC should be cleaned
1245      S/R gmredi_slope_psi should be cleaned
1246    o verification/carbon now has exactConserv=.TRUE.
1247    
1248    checkpoint47g_post
1249    o time-average AIM output: becomes independent from statvars time-average
1250      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1251    o After TAF bug fix:
1252      Tested adjoint of gmredi package.
1253      Tests were done with checkpoint47 rather than with latest
1254      checkpoint47f_post since the latter is broken for the adjoint
1255      verification/carbon/ contains both ADM and TLM gradient checks.
1256    Here they are, before they get changed/lost/stolen.
1257    Mostly modif.'s to fix numerical sensitivities.
1258    Gradient checks OK for
1259    - GM_taper_scheme:
1260      * clipping
1261      * ac02
1262      * linear
1263      * glw91
1264      * dm95
1265      * ldd97
1266    - GMREDI_OPTIONS:
1267      * GM_VISBECK_VARIABLE_K
1268      * GM_NON_UNITY_DIAGONAL
1269      * GM_EXTRA_DIAGONAL
1270      * GM_BOLUS_ADVEC
1271    in conjunction with data.gmredi parameters to be checked in
1272    in a few minutes under verification/carbon/code/
1273    
1274    checkpoint47f_post
1275    Merging from release1_p10:
1276    o modifications for using pkg/exf with pkg/seaice
1277      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1278        and SEAICE_EXTERNAL_FLUXES
1279      - pkg/exf CPP options EXF_READ_EVAP and
1280        EXF_NO_BULK_COMPUTATIONS
1281      - usage examples are Experiments 8 and 9 in
1282        verification/lab_sea/README
1283      - verification/lab_sea default experiment now uses
1284        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1285    
1286    checkpoint47e_post
1287    o created a tag prior to creating a branch
1288    
1289    checkpoint47d_post
1290    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1291      at the bottom boundary had an erroneous half slip boundary condition
1292    o added bottom drag and no slip boundary condition capabilities to
1293      oceanic pressure coordinates code
1294    o added new verification experiment global_ocean_pressure, this experiment is
1295      also described in the tutorial section of the manual
1296    checkpoint47d_pre
1297    
1298    checkpoint47c_post
1299    o Added a verification experiment for a global cubed-sphere ocean run
1300      -  verification/global_ocean.cubed32x32x30
1301      -  uses pkg/therm_seaice and pkg/bulk_forcing
1302    
1303    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1304    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1305      when using P-coordinate; only implemented for atmospheric config.
1306    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1307      NOTES: requires option NONLIN_FRSURF to be "#define".
1308    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1309    
1310    checkpoint47b_post
1311    Merging from release1_p9:
1312    o pkg/seaice
1313      - removed GOTO's and added taf directives
1314      - double precision constants to reduce the g77 (Linux)
1315        to F77 (SGI) differences reported in release1_p8
1316    o tools/genmake
1317      - added SGI options
1318    o verification/testscript
1319      - updated to that of checkpoint47a_post
1320    o verification/global_ocean.90x40x15/input/eedata
1321      - modified for SGI f77 compatibility
1322    o verification/lab_sea
1323      - added description of sea-ice model
1324      - added missing matlab routines
1325      - added test of thermodynamics parallelization
1326    
1327    checkpoint47a_post
1328    o new pkg: aim_v23
1329     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1330       for now, keep the same surface forcing as before.
1331     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1332     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1333     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1334    o add diagnostic of surface correction term in monitor output
1335    
1336    o bulk_force and therm_seaice
1337    - Two packages:  bulk_force (Bulk forcing)
1338      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1339    - Earlier integration from Stephaine Dutkiewicz
1340      and Patrick Heimbach.
1341    - Two ifdef statements for compile time,
1342       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1343    
1344    checkpoint47
1345    differentiable version of checkpoint46n_post
1346    o bug fix in quasihydrostaticterms
1347    o * "clean" adjoint code (in terms of extensive recomputations)
1348        can now be obtained for all GMREDI options (i.e. for
1349        - GM_VISBECK_VARIABLE_K
1350        - GM_NON_UNITY_DIAGONAL
1351        - GM_EXTRA_DIAGONAL
1352        - GM_BOLUS_ADVEC )
1353      * However, wrong gradient check problem remains unsolved.
1354      * New CPP options have been introduced for different
1355        tapering schemes
1356    o external_fields_load now part of differentiation list
1357    o pressure needs multiple storing;
1358      would be nice to have store_pressure at beginning or
1359      end of forward_step, e.g. by having phiHyd global (5-dim.)
1360      (NB: pressure is needed for certain cases in find_rho,
1361      which is also invoked through convective_adjustment).
1362    o recomputations in find_rho for cases
1363     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1364    o #define ATMOSPHERIC_LOADING should be differentiable
1365    o ini_forcing shifted to begining of initialise_varia
1366    o Incorporating QNVS line search routines into MITgcm
1367      (this is separate code, and therefore not under pkg)
1368      lsopt/, optim/
1369    o Updated verification/carbon/
1370      - #define GM_VISBECK_VARIABLE_K
1371      - GM_taper_scheme    = 'ldd97'    
1372    
1373    checkpoint46n_post
1374    Merging from release1_p8:
1375    o verification/natl_box:
1376      updating new external_fields_load routine
1377    o New package: pkg/seaice
1378      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1379      The sea-ice code is based on Hibler (1979-1980).
1380      Two sea-ice dynamic solvers, ADI and LSR, are included.
1381      In addition to computing prognostic sea-ice variables and diagnosing
1382      the forcing/external data fields that drive the ocean model,
1383      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1384      The implied surface heat flux is then stored in variable
1385      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1386      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1387      non-local transport term.  Because this call precedes model
1388      thermodynamics, temperature under sea-ice may not be "exactly" at
1389      the freezing point by the time theta is dumped or time-averaged.
1390      N.B.: fairly large differences in accuracy occur across
1391            different platforms/compilers; comparison between
1392            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1393            generated output gives:
1394       T           S           U           V
1395      C D M    c        m  s        m  s        m  s        m  s
1396      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1397      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1398      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1399    
1400      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1401    o GAD:
1402      - generated new common blocks to account for call of
1403        same gad routines with differing traceridentities
1404        (needed to modify tracerIdentity indices in GAD.h)
1405      - generated separate common blocks for case useCubedSphereExchange
1406        (Department of Futurology)
1407      - parameter lists to gmredi_?transport: added tracerIdentity
1408      - added new key indices to tamc.h
1409    o external_fields_load:
1410      - added this routine to TAF list
1411      - needed to make some common blocks global and additional storing
1412        along the same lines as exf package (checkpoint_lev?_directives.h)
1413    o exf:
1414      updated external forcing package
1415      - bug fixes carried over from ecco-branch
1416        (missing OBCS_OPTIONS.h in two routines)
1417      - enable easy to use "no forcing".
1418      - added exf I/O for atmospheric loading
1419      - added exf I/O for runoff data
1420      - transfered scaling between exf <-> MITgcm to exf namelist
1421    o Adding new verification experiment global_with_exf.
1422      This verification experiment is almost identical to the
1423      global_ocean.90x40x15 experiment, except that it uses
1424      the exf (and cal) package instead of the
1425      external_fields_load routine (cf README file).
1426    
1427    checkpoint46m_post
1428    o modified testscript to return -- when there are no lines of "%MON" output
1429    o added new flag "quasiHydrostatic" for QH mode
1430      and new routine quasihydrostaticterms()
1431    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1432      New routine: mom_u_coriolis_nh()
1433    o fixed sign of non-hydrostatic metric terms in u and v equations.
1434      Depend on correct sign of gravitySign.
1435    o added work.pc* to .cvsignore in aim directories using ifc
1436    o introduced flag for controllin non-hydrostatic metric terms
1437    o removed gravitySign from PARM04
1438    o switched to g77/ifc from pgf77 in aim experiments
1439    
1440    checkpoint46l_post
1441    o made convective adjustment work with pressure coordinates:
1442     - changed the direction of k-loop in convective_adjustment.F for the
1443       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1444     - adjusted the reference pressure k-index in convective_adjustment.F
1445     - adjusted the convection condition in convect.F (in analogy to
1446       calc_ivdc.F)
1447     - convective_adjustment no longer computes anything on the halos
1448     - removed the warnings about negative salinity from find_rho.F and
1449       find_alpha.F; instead the new routine look_for_neg_salinity, called
1450       at the beginning of find_rho, find_alpha, and find_beta, does a
1451       check of the entire slice, if CPP-option
1452       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1453    checkpoint46l_pre
1454    
1455    checkpoint46k_post
1456    o fixed the verification/global_ocean.90x40x15 experiment:
1457     - new bathymetry (the world according to A., JMC, and M.)
1458     - new initial fields and forcing fields (*.bin files)
1459     - new POLY3.COEFFS (for the next release one should switch to a full
1460       equation of state: JMD95P or MDJWF)
1461     - fixed several errors and redundancies in the data file
1462     - experiment uses looped cells
1463     - added matlab directory with diagnostic scripts for plotting of output
1464    
1465    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1466     - read AIM physics parameters from a file (data.aimphys)
1467     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1468    
1469    checkpoint46j_post
1470    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1471    o move wVel computation at the end of the time step, in S/R integr_continuity
1472    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1473    o update timeave pkg for wVel diagnostic.
1474    checkpoint46j_pre
1475    
1476    checkpoint46i_post
1477    o Clean up AIM package (and keep the results unchanged):
1478      include CPP_OPTION and use IMPLICT NONE in all routines ;
1479      declare all the variables _RL ; use _d 0 for all numerical constants.
1480      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1481    
1482    checkpoint46h_post
1483    o cleaned up the use of rhoNil and rhoConst.
1484      - rhoNil should only appear in the LINEAR equation of state, everywhere
1485        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1486        and the dynamical equations are all divided by rhoConst
1487    o introduced new parameter rhoConstFresh, a reference density of fresh
1488      water, to remove the fresh water flux's dependence on rhoNil. The default
1489      value is 999.8 kg/m^3
1490    o cleanup up external_forcing.F and external_forcing_surf.F
1491      - can now be used by both OCEANIC and OCEANICP
1492    checkpoint46h_pre
1493    
1494     Added code to convert surface volume flux (fresh water) into
1495     a mass flux when using P coordinates in the ocean (OCEANICP).
1496     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1497    
1498    checkpoint46g_post
1499    o Include a new diagnostic variable phiHydLow for the ocean model
1500      - in z-coordinates, it is the bottom pressure anomaly
1501      - in p-coordinates, it is the sea surface elevation
1502      - in both cases, these variable have global drift, reflecting the mass
1503        drift in z-coordinates and the volume drift in p-coordinates
1504      - included time averaging for phiHydLow, be aware of the drift!
1505    o depth-dependent computation of Bo_surf for pressure coordinates
1506      in the ocean (buoyancyRelation='OCEANICP')
1507      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1508        Theta, Salinity, and Pressure in the parameter list. This routine is
1509        presently contained in find_rho.F. This routine does not give the
1510        correct density for 'POLY3', which would be a z-dependent reference
1511        density.
1512    o cleaned up find_rho
1513      - removed obsolete 'eqn' from the parameter list.
1514    o added two new verification experiments: gop and goz
1515      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1516    checkpoint46g_pre
1517    
1518    checkpoint46f_post
1519    o Enable tangent linear (forward mode) gradient checks:
1520      - extended active file handling to g_... files
1521      - added TANGENT_SIMULATION to theSimulationMode
1522      - extended grdchk package accordingly
1523    o added tangent linear setup in verification/carbon/code_ftl
1524    o added adjoint setup in verification/front_relax/code_ad
1525    
1526    checkpoint46e_post
1527    o Added new equation of state -> MDJWF
1528      - EOS of McDougall et al., 2002, JAOT, submitted
1529      - caveat: the equation of state is only valid for a smaller (more
1530        realistic?) range of values than JMD95P/Z and UNESCO
1531      - added masks to the calculation of pressure in store_pressure
1532      - added more check values for density in check_eos (ini_eos.F), some of
1533        the old check values are out of the range of the MDJWF-eos, so don't
1534        expect perfect matches for those
1535    checkpoint46e_pre
1536    
1537    checkpoint46d_post
1538    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1539      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1540      case of pressure coordinates. eosType='JMD95Z' in
1541      combination with buoyancyRelation='OCEANICP' now causes an error.
1542    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1543      in find_alpha/beta.
1544    checkpoint46d_pre
1545    
1546    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1547      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1548    
1549    checkpoint46c_post
1550    o Changes necessary for ocean in p-coordinates
1551     -  Added new buoyancy relation = 'OCEANICP'
1552     -  Added new parameters = gravitySign (this used to be contained inside
1553        the factor dRdZ which I added when we first switched to R coordinates).
1554     X GM/Redi is not compatible (yet)
1555     X bottom drag and no-slip need to be debugged.
1556    checkpoint46c_pre
1557    
1558    checkpoint46b_post
1559    o Added new equation of state -> JMD95Z and JMD95P
1560      - EOS of Jackett and McDougall, 1995, JAOT
1561      - moved all EOS parameters into EOS.h
1562      - new routines ini_eos.F, store_pressure.F
1563    o Added UNESCO EOS, but not recommended because it requires
1564      in-situ temperature (see JMD95)
1565    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1566      unesco.f to be used with POLY3
1567    checkpoint46b_pre
1568    
1569    checkpoint46a_post
1570    o Added (atmospheric) pressure loading
1571      - new field in FFIELDS.h, etc...
1572      - new cpp flag ATMOSPHERIC_LOADING
1573    o Changed hFacC to _hFacC in calc_phi_hyd.F
1574    o Added SHORTWAVE_HEATING to some files for consistency
1575    checkpoint46a_pre
1576    
1577    checkpoint46
1578    further merges from release1_p5
1579    o new ctrl package
1580      - adopted from ECCO environment to enable optimization
1581      - added Eliassen Palm fluxes to controls
1582    o added Eliassen Palm flux controls to gradient check package
1583    o cost package
1584      - Compatible with new ctrl package
1585      - added Eliassen Palm cost hooks
1586      - modif's of existing cost functions
1587    o Adjoint-related bug fixes in kpp:
1588      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1589      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1590    o autodiff package
1591      - flow directives:
1592        + new for S/R do_the_model_io
1593        + enhanced for S/R checkpoint
1594        + new gmredi.flow
1595      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1596        disable adcommon.h/g_common.h by default.
1597      - fixed problem for adjoint of global_max
1598    o modified verification/carbon/
1599    o New setup for adjoint of global_ocean
1600    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1601    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1602    o incorporated hooks for sponge layer code (external_forcing.F)
1603    
1604    checkpoint45d_post
1605    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1606    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1607      (affects plume_on_slope "cg2d" output)
1608    o add new parameter deltaTfreesurf for free-surface time stepping
1609    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1610    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1611    o change phiMin in exp1 (to agree with documentation)
1612    o add new flags:
1613     - T,S forcing inside/outside Adams-Bashforth
1614     - turn off temp,salt advection and/or forcing
1615     - for each tracer, define internal flag for multiDimAdvection & A-B
1616    o monitor: change definition of KE to check conservation of Energy
1617    
1618    checkpoint45c_post
1619    o Removed f90 comments ("!")
1620    o Modified initialisations to enable exf package for MITgcm
1621      (without invoking ECCO_PACKAGE).
1622    o modifications to gradient check package (Martin Losch)
1623      - enable centered differences
1624      - modified format of standard output
1625    
1626    checkpoint45b_post
1627    o cleaned exchange calls in cg2d
1628    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1629    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1630      to configure barotropic setup (Martin Losch)
1631    o moved some initialisations within bi,bj loop in dynamics
1632      (TAF flow dependency)
1633    o in initialise_varia, moved call packages_init_variables
1634      before convective_adjustment_init
1635      (corresponding adjustment of TAF tape initialisation).
1636    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1637    
1638    checkpoint45a_post
1639    o compute Rho over the whole domain (extend iMin,jMin indices)
1640    o specific exchange for X-slice domain (case Ny=1)
1641    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1642    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1643    
1644    checkpoint44h_post = checkpoint45
1645    o Fix to restore differentiability:
1646      place at which packages_init_variables is called in
1647      initialise_varia is crucial for reverse control flow.
1648    o modifications in GMRedi to enable stable adjoint
1649      (corresponding modif's in thermodynamics, dynamics)
1650    o added missing hook for sponge layer code in external_forcing
1651    o modified test cost functions
1652    o storing in gad_advection (plus removal of write(0,*)!
1653    o missing headers TR1.h added in convective_adjustment routines
1654    o errorMessageUnit set non-equal zero in eeboot
1655      (conflict on some platforms, e.g. IBM SP3)
1656    o modified carbon verif.
1657    
1658    checkpoint44h_pre
1659    o vertical grid option: allow to put the Interface at the middle between
1660      2 cell-centers ; replace delZ in pkg/kpp by drF.
1661    o GM Advective form: Tracers are advected using the residual transport (=
1662      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1663    
1664    checkpoint44g_post
1665    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1666      results) ; ifdef missing in thermodynamics.F
1667    
1668    checkpoint44f_pre,checkpoint44f_post
1669    o added PTRACERS package
1670      This allows an arbitrary number of passive tracers to be integrated
1671      forward simultaneously with the dynamicaly model.
1672      + Implemented so far:
1673        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1674        - I/O and checkpointing
1675        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1676      + Not implemented so far:
1677        - KPP
1678        - OBCS
1679      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1680        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1681        line in data.pkg.
1682      + This package is disabled by default since it increases storage.
1683    
1684    
1685    o testscript: added -cleanup option
1686    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1687                 b) enable to filter 2D fields.
1688    
1689    checkpoint44e_pre,post
1690    o re-wrote convective adjustment to use pre-calculated weights
1691      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1692      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1693      Original calls to convect() still in place.
1694    
1695  chkpt44d_pre,post  chkpt44d_pre,post
1696  o added missing EXCLUDE_MONITOR flags  o added missing EXCLUDE_MONITOR flags
# Line 17  o removed variables in dynamics Line 1704  o removed variables in dynamics
1704  !!! I forgot to create tag chkpt44d_pre !!!  !!! I forgot to create tag chkpt44d_pre !!!
1705  !!! But chkpt44d_pre = chkpt44c_post    !!!  !!! But chkpt44d_pre = chkpt44c_post    !!!
1706    
1707    o real fresh water flux implemented with non-linear free-surface.
1708    
1709  chkpt44c_pre,post  chkpt44c_pre,post
1710  o few fix (mask in shap_s2, EmPmR in external_field_load,  o few fix (mask in shap_s2, EmPmR in external_field_load,
1711    USE_NATURAL_BCS in solve_for_P);    USE_NATURAL_BCS in solve_for_P);

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