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revision 1.60 by jmc, Sun Feb 10 20:07:14 2002 UTC revision 1.372 by jmc, Wed Oct 20 21:59:35 2004 UTC
# Line 2  $Header$ Line 2  $Header$
2    
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    o Compute the non-local term using either KPP vertical diffusivity (=default)
6       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
7    
8    checkpoint55h_post
9    o add verification test "vermix"
10    o remove all the *_ioinc flags and replace with the single global
11      outputTypesInclusive flag
12    o allow to set a vertical profile of vertical diffusivity for T & S
13    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
14    o useMNC moved from data.mnc to data.pkg
15    
16    checkpoint55g_post
17    o Renaming carbon AD experiments to comply with testreport conventions
18    o Updating adjoint of Held-Suarez hs94.1x64x5
19    o Fixing directives for non-ECCO forward_step, after ECCO directives
20      have been fixed to avoid recomp. of do_oceanic_phys
21      Works well for global_ocean.90x40x15,
22      but recomp. issue remains for carbon
23    o Updating adjoint output for natl_box_adjoint after
24      pkg/ecco has been modified (see taga c55d_post)
25    
26    checkpoint55f_post
27    o rename to timeave_init_fixed
28    
29    checkpoint55e_post
30    o some delicate re-shuffle of store directives to avoid one
31      extra call of do_oceanic_physics
32      affects ecco_the_main_loop.F, do_oceanic_physics.F
33      checkpoint_lev1_directives.h
34    o NB: this may break global_ocean adjoint temporarily,
35      but it is clear how to fix it. Will do later, need this now.
36    
37    checkpoint55d_post
38    o ECCO specific cost function terms (up-to-date with 1x1 runs)
39    o ecco_cost_weights is modified to 1x1 runs
40    o modifs to allow observations to be read in as
41      single file or yearly files
42    o enable to read exf forcing fields as either
43      single file or yearly files (flag useExfYearlyFields)
44    checkpoint55d_pre
45    
46    o switch between 2-level and 3-level checkpointing
47    o add ability of MNC to write local and "partial" (eg. 2D slices where
48      the full 3D field is never actually stored) arrays to NetCDF files
49      with the correct (that is, the complete multi-dimensional) set of
50      array indicies
51      - used in mom_vecinv() to write the diagFreq output
52      - tested (demonstrated) in verification/aim.5l_cs
53    o further mnc-ification
54      - add verification/lab_sea to the list with mnc setups
55      - fix undefined mnc v-names in cd_code
56      - add kpp to mnc output (both snapshot and timeave)
57    o non-hydrostatic code
58      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
59        in calc_gw.F
60      - defaults to viscAh
61      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
62        friction or Leith) in non-hydrostatic mode, as long as there is
63        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
64    o pkg/cost
65      extend simple cost functions to treat time mean quantities
66      (T,U,V) via cost_accumulate_state from cost_tile
67    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
68        be 2 times larger than the minimum size the advection scheme requires.
69        now get a perfect conservation of salt in advect_cs test-exp (updated)
70    o GGL90 (Gaspar's TKE mixed layer)
71      - add horizontal diffusion of TKE, requires exchanges in
72        do_fields_blocking_exchanges, horizontal diffusivity is zero by
73        default. In OPA there is no horizontal diffusion of TKE but the
74        mixing coefficients are computed from a horizontal average of TKE of
75        6 points or so. I think that diffusion has a little more physical
76        justification.
77      - clean up ggl90_calc in the hope of reducing memory usage (this hope
78        was in vain)
79      - mask tke-variable in ggl90_init
80    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
81    o fix biharmonic diffusion on CS-grid.
82    o more obcs stuff
83      - added obcs_external_fields_load as an alternative to the EXF-pkg option
84        for reading boundary values. This routine is called from
85        obcs_prescribe_read
86      - updated obcs_check
87      - changed sponge layer relaxation parameter units for days to seconds
88      - turned off sponge layer by default
89      - changed argument list of OBCS_CALC to myTime+deltaTclock
90      - fixed about 35 bugs in obcs_external_fields_load
91    
92    checkpoint55c_post
93    o obcs stuff
94      - new runtime flags useOBCSprescribe, useOBCSbalance
95      - re-arranged obcs_calc
96      - moved exf_getobcs to obcs_prescibe_read
97        obcs_prescibe_read is called after ORLANSKI stuff
98        and independent of it (executable can contain all).
99      - updated obcs_check
100      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
101        These may be necessary only if tangential velocities are
102        prescribed at OB, not sure, needs testing.
103    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
104      which simplifies the calls and passes the ifc check-bounds test
105    
106    checkpoint55b_post
107    o add a 2D scalar, Z location, exchange_2 routine.
108    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
109      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
110      affects advect_cs results (for the wrong reason): update output.txt
111    o use a more standard discretization for biharmonic viscosity ;
112     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
113      affects results of dome set-up: update output.txt
114    o fix gad_advection.F (CubedSphere part), back to version 1.23
115    o fix bug in mom_vi_del2uv.F (CubedSphere part).
116    
117    checkpoint55a_post
118    o merged code to
119      * prescribe/read time-dependent open boundaries
120        (works in conjunction with exf, cal)
121      * sponge layer code for open boundaries
122      * each boundary N/S/E/W now has its own CPP option
123        (healthy for the adjoint)
124    
125    checkpoint55
126    o up-to-date adjoint of previous breaks
127      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
128      - global_ocean_ebm: adjoint still needs fix (TLM ok)
129      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
130      - carbon: * remove tr1-related adjoint verification
131                * add ptracer as control variable
132    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
133      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
134    
135    checkpoint54f_post
136    o in verification/carbin/ remove experiment related to
137      ALLOW_PASSIVE_TRACER (array tr1 etc)
138      code_ad/ input_ad/ results_ad
139    
140    o add two new packages
141      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
142        + subject to optimization (memory)
143      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
144        + subject to reordering (many GOTOs in the original code)
145        + so far opps is called for every (i,j) point, and then operates in
146          the vertical; one may want to reorder the scheme in order operate in
147          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
148          fields)
149    o overhaul of IO so that we now have flags for MDSIO and/or MNC
150      - all verification tests compile and run with linux_ia32_g77
151      - defaults are compatible with current input files--nothing
152        should change if you were not previously using MNC
153      - MNC output has been added in numerous places (eg. timeave)
154        but there are still a few writes not yet do-able with MNC
155        (this is in progress)
156      - flags now allow for either/or/both use of MDSIO and MNC and
157        documentation will soon follow
158      - numerous small formatting cleanups for ProTeX
159    o add version info (via BUILD_INFO.h) to MNC and stdout
160    
161    checkpoint54e_post
162    o add two new packages
163      - pp81 (Packanowski and Philander, 1981), Richardson number and
164        stratification dependent mixing
165      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
166      - these scheme operate in a similar manner as KPP (without ghat, of
167        course), however there is only one diffusivity that is used for both
168        temperature and salinity (and passive tracers)ç
169    o add offline package
170    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
171      provided by Stephanie Dutkiewicz
172    o genmake2: add ability to search for C compilers and cleanup test output
173      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
174    
175    checkpoint54d_post
176    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
177    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
178      leading to additional shift by 5 days each year of integration
179       (i.e. leading to considerable offset over the years)
180    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
181    o start with no AB and no initial filtering (staggerTimeStep):
182      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
183    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
184      (external loading & cpl import/export stay in forward_step.F)
185    o update coupling interface to work with new staggerTimeStep
186    o change MDSIO ptracers_pickup.
187    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
188    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
189    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
190    
191    checkpoint54c_post
192    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
193      this affects (truncation error) output.txt of test-exp:
194       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
195    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
196    o change Qnet to always be the net heat flux, (+upward).
197      affects (truncation error) output of natl_box exp.: updated
198    o define the max number of passive tracers in PTRACERS_SIZE.h
199    o start to test mnc routinely in exp0
200    o add sea-ice loading (sIceLoad) as a new forcing field.
201    
202    checkpoint54b_post
203    o add testreport "-j JOBS" option for parallel builds (tested and pretty
204       impressive on Altix and Opteron systems)
205    o diagnostics can now write NetCDF files through the mnc package
206    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
207    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
208    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
209      affects (truncation error) output of lab_sea & natl_box exp.: updated
210    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
211    
212    checkpoint54a_post
213    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
214    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
215    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
216    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
217      + internal_wave (shift in writing cg2d_ini_res)
218    checkpoint54a_pre
219    
220    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
221      - modified verification/lab_sea and natl_box_adjoint accordingly
222    
223    checkpoint54
224    checkpoint53g_post
225    o prepare splitting of thermodynamics: store convect.counter in common block
226    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
227      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
228    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
229    o new parameter "nShapS": allow to treat differently S from T (nShapT)
230    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
231    o restore adjointability
232    
233    checkpoint53f_post
234    o modifications that affect AIM experiment results (update output.txt):
235      - no advection of S at top interface Nr (pkg/generic_advdiff)
236      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
237    o AIM pkg:
238      - include stability function into surf.Flux derivative relative to Tsurf
239      - calculate clear-sky radiation & surface temp. change (for diagnostics)
240    
241    checkpoint53e_post
242    o merged cylindrical coord configuration
243    o added rotating_tank experiment
244    checkpoint53e_pre
245    
246    checkpoint53d_post
247    o faulks upgraded: re-generate output.txt that have changed:
248       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
249    o Added Bryan and Lewis, 1979, vertical diffusivity profile
250    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
251    o added Sadourny discretization of Coriolis
252      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
253      - re-enabled use of omega3 (useAbsVorticity)
254    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
255      vector-invariant equations
256      - note: does *NOT* yet use same variable visc. for no-slip BC's.
257    o recoded the lateral boundary conditions for non-hydrostatic w, this time
258      hopefully without new bugs
259      - still to do: biharmonic friction for non-hydrostatic w
260    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
261    o regenerated output for global_ocean_ebm (using -ieee)
262    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
263      of mom_common/
264      - simple re-arrangement of instructions within computing loop
265    checkpoint53d_pre
266    
267    checkpoint53c_post
268    o new version of coupler for AIM+thSIce and Ocean models
269     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
270     - land: change Evaporation of snow
271     - aim with thSIce: fix bug in snow-precip.
272    o changes to calc_gw.F
273     - bug fix for w^2 term near the bottom boundary
274     - (hopefully) improve the lateral slip boundary condtions for use with
275        partial/looped cells
276      - because the bug fix changes two verification experiments anyway (exp5
277        and plume on slope), change the lateral boundary condition from half slip
278        to the value of no_slip_sides
279    o ebm package wasnt quite up to the parallel task. Fixed that.
280    o Adjoint of EBM package + verification
281      * TLM OK
282      * ADM not sufficient accuracy yet (needs further testing)
283    
284    checkpoint53b_post
285    o Commiting new energy balance model to repository
286      * package is pkg/ebm
287      * verif. is verification/global_ocean_ebm
288      * references are in ebm_driver.F
289    C      * X. Wang, P. Stone and J. Marotzke, 1999:
290    C        Global thermohaline circulation. Part I:
291    C        Sensitivity to atmospheric moisture transport.
292    C        J. Climate 12(1), 71-82
293    C      * X. Wang, P. Stone and J. Marotzke, 1999:
294    C        Global thermohaline circulation. Part II:
295    C        Sensitivity with interactive transport.
296    C        J. Climate 12(1), 83-91
297    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
298    C        Destabilization of the thermohaline circulation
299    C        by atmospheric eddy transports.
300    C        J. Climate 7(12), 1870-1882
301    o Will need long integration testing.
302    checkpoint53b_pre
303    
304    o created pkg/mom_common in preparation for variable viscosity code
305    o renamed and split ini_mnc_io
306    o pkg/land: only liquid water can diffuse or run-off
307    o AIM using land: soil wetness availability account for snow
308    o added printMapIncludesZeros to EEPARMS namelist
309    
310    checkpoint53a_post
311    o restore TAMC compatiility for exf_constants.h
312      (no usage of _d in .h)
313    o Additional storing in KPP in an attempt to fix
314      TAMC problem with adjoint of KPP code.
315      (no success...)
316      Identical code works fine with TAF.
317    o Fixed verification/natl_box_adjoint experiments.
318      Initial conditions for Experiments 4 and 5 are now
319      set to "SEAICE_initialHEFF=0", which is more reasonable,
320      and hence gives results closer to that of Experiment 2.
321      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
322    
323    checkpoint53
324    o stable checkpoint with up to date adjoint
325      TLM tests only run for 1st grdchk at the moment. Its unclear if
326      this is a code problem or a problem with resetting code for g_
327      variables that is being autogenerated wrong.
328      Otherwise:
329       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
330       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
331         are both still in chaos following their security messes.
332    
333    checkpoint52n_post
334    o various build (mostly genmake2) changes including:
335      - ability to build/run more easily within Cygwin and MacOS X
336      - more complicated Makefiles with a stronger dependence on Gnu Make
337    o pkg/seaice modifications
338      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
339        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
340        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
341      - changed proxy for geostrophic velocity and updated
342        verification/lab_sea/results/* accordingly
343      - removed ADI dynamic solver from pkg/seaice
344      - replaced all occurrences of 1/CSTICE or 1/CSUICE
345        they caused a segmentation fault under certain circumstances
346      - removed unused field WATR
347    o bug fix in exf-package:
348      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
349         now reflect that.
350    o small fixes in the cal-package:
351      - set reference date to first of January for the 'model'-calendar
352      - failing of cal_CheckDate in cal_FullDate now actually results in a
353        warning
354    o small modifications in exf-package to increase flexibility:
355      - change climtempfreeze from a constant to a runtime parameter that
356        is specified in data.exf_clim (default = -1.9)
357      - introduce runtime parameter windstressmax (default = 2.0) that is
358        specified in data.exf
359    o fix in pkg/thsice:
360      - update Evap (Tsf changes) to be consistent with Latent heat flux
361      - maintain snow precipitation unchanged (even if Tsf >=0).
362     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
363    
364    checkpoint52m_post
365    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
366      this does not change any of the results, because myIter=0 in swfrac always
367      lead to jwtype=2 (the default anyway), but the call makes little sense
368      as a default
369    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
370    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
371      atmospheric model (AIM) to use it ; add a "slab ocean" component.
372    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
373    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
374    o extending useSingleCpuIO option to work with new exch2 I/O format
375      - old-style, missing-tile I/O is still accessible by defining CPP
376        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
377    o monitor package can write to NetCDF files and/or STDOUT
378    o fix re-definition bug in MNC_GRID_INIT_ALL()
379    o doc/api_reference added
380      - a framework for building an API Reference Manual using all
381        the "protex" comments embedded in the code
382      - see pkg/generic_advdiff, pkg/mnc for examples
383    o MNC:
384      - make myThid the last argument for all subroutines
385      - new default for the grid files: NO halos
386      - add useMNC and other run-time flags
387      - separate per-file-group handling of the unlimited dimension
388      - early initialization of MNC w/ flags read at the eeboot stage
389        and lookup tables set in initialize_fixed
390      - write all MNC output to a freshly-created directory
391    o thermodynamics sea-ice (thsice) is now tested with testreport.
392    o test exp. advect_cs: use the standard cs32 grid ; update output.
393    o Added functionality to grdchk:
394      pick global i,j,k position (or nearest wet) where to perform check.
395    
396    checkpoint52l_post
397    o new land formulation:
398      a) use ground enthalpy as prognostic variable to ensure exact
399         energy conservation.
400      b) account for water temperature and for latent heat of freezing
401         in all processes (rain, run-off, ground storage)
402      c) compute surface and ground temperature implicitly.
403    o aim_v23 modification for new land model:
404      a) Treat separately land / ocean / sea-ice surface fluxes
405         to allow implicit computation of land & sea-ice surface temp.
406      b) add snow precipitation.
407    checkpoint52l_pre
408    
409    o fix problem (when 1 tile is empty) in min/max monitor.
410    o fix bug in timeAve (u,vZetatave in common block)
411    o no restoring terms under ice for pkg/seaice
412    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
413    o bug fix for pkg/seaice pickups
414    o change MNC call locations and add coordinate attributes
415    o mask vorticity at the corner ; affects global_ocean.cs output
416    o fix ini_curvilinear_grid ; test CS experiments with mpi
417    o aim.5l_cs: modify sea-ice fraction input file ; update output
418    o exf: Adding simple range check routine for exf fields after read
419    
420    checkpoint52k_post
421    o removed top-level directory "diags"
422      - we migrated these functions to pkg/timeave a long time ago
423    o fixed bug introduced in pkg/monitor
424    o accuracy ctrlprec = 32 insuffient for gradient checks using
425      averaged fields (I/O via cost_averages)
426      -> use ctrl.h in active_file*.F to control I/O precision.
427    o paramter list of CALL ADTHE_MAIN_LOOP
428    o added initial do_the_model_io to ecco
429    o set all ...Freq to zero after cost_final
430      taveFreq, dumpFreq, pChkptFreq
431    o MAIN and ECCO differentiability restored
432    
433    checkpoint52j_post
434    o fix nchklev in tamc.h for global_ocean...
435    o Bringing flow and store directives up-to-date
436    o Really weird thing!
437      call do_the_model_io from the_main_loop with parameters
438      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
439      TAF places a faulty re-call of initialise_varia
440      after cost_final call which should not be there!
441    checkpoint52j_pre
442    
443    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
444      error messages
445    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
446    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
447      debug output
448    o modfied mdsio_writefield.F to handle non-global files under exch2
449    o update AIM Cubed-Sphere exp (aim.5l_cs):
450      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
451    o update AIM Equatorial Channel exp:
452      use standard aim_v23 pkg and change the SST fields to be more realistic.
453    o globalFile now works with exch2
454    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
455      mon_vort3.F to make exch2 friendly with >1 tile per cube face
456    o limit timeave output for hi-res integrations
457    
458    checkpoint52i_post
459    o removed CPP_EEOPTIONS.h from verification/*/code
460    o updated the tiling for global_ocean_pressure
461    checkpoint52i_pre
462    
463    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
464      the old pkg/aim).
465    
466    checkpoint52h_pre
467    o shortened offending lines in exch2_send_rx?.template
468    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
469    o genmake2: add build & execute test for NetCDF code
470    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
471      old grid files, moved CPP_EEMACROS.h to pkg/exch2
472    o added useSingleCPUIO flag to monitor.F and mon_out.F
473    o added temporary hack for sea-ice dynamics on the cube:
474      metric terms are ignored and it is assumed that
475      there is no sea-ice on cube faces 1, 2, 4, and 5.
476    
477    checkpoint52f_post
478    o added exch2 cube routines to pkg/exch2
479    o modified hs94.cs-32x32x5 to use it
480    o added new grid files to hs94.cs-32x32x5
481    checkpoint52f_pre
482    
483    checkpoint52e_post
484    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
485      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
486    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
487      to work with implicit vertical advection and AB ;
488    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
489    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
490     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
491    checkpoint52e_pre
492    
493    o fix bug in impldiff when Nr=1 or Nr=2.
494    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
495    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
496    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
497      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
498    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
499    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
500    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
501    
502    checkpoint52d_post
503    o re-tiled many expts to allow comparison in multi-processor mode
504      - updated output accordingly
505      - changed hs94.128x64x5 to use intial T from file rather than use the
506        random number generator
507    o add infrastructure in model routines for fizhi and gridalt packages
508    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
509    o changes to permit hi-res, cubed-sphere, configuration
510      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
511      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
512      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
513        of surface winds for the cube
514      (A verification experiment, based on global_ocean.cs32x15, but with
515       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
516       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
517       complete with example surface forcing files and matlab scripts to look
518       at the output and compare it with that of global_ocean.cs32x15.)
519    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
520       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
521       to conform to the common rule.
522    o check-in the first version of the coupler + interfaces for multi-components
523       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
524       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
525       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
526       - ocean and atmos. share the same horizontal grid (no interpolation).
527       - exchanges between component and coupler is done in forward_step
528    o new verification experiment, cpl_aim+ocn:
529       coupled ocean - AIM atmosphere on cs32 grid.
530    
531    checkpoint52d_pre
532    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
533    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
534    
535    checkpoint52c_post
536    o Fixing OPTIONS files for use of exf:
537      - ALLOW_ECCO not needed
538      - ECCO_CPPOPTIONS.h should not be included from
539        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
540        as has been the case in the past
541      - All cal/exf related options are currently set in
542        single header file. Should remain so until we
543        agree on a consistent new policy.
544    o Removed all CPP options for cal package.
545      cal has no more CPP options.
546    o modified STOREs in GAD_ADVECTION
547    o corrected key comp. for passkey
548    
549    checkpoint52b_post
550    o new version: "thsice" of thermodynamic sea-ice pkg:
551     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
552     - modify fluxes but do not change theta directly;
553     - light cleaning of bulk_force pkg (still needed with thsice).
554     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
555       + output_thsice.txt to test thsice & bulk_force pkgs.
556    o put back grid & coriolis monitor output.
557    checkpoint52b_pre
558    
559    o call "do_the_model_io" at the beginning (=> dump initial state)
560    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
561    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
562      (need info on NUMBER_OF_PTRACERS)
563    o missing PTRACERS headers in some routines
564    o default tamc.h in pkg/autodiff supposed to crash
565      to ensure proper customization
566    
567    checkpoint52a_post
568    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
569      - moved surfaceTendencyTice from pkg/seaice to main code
570      - subroutine FREEZE_SURFACE now limits only surface temperature
571        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
572        => new output.txt for global_ocean.cs32x15 & global_with_exf
573      - keep the old version of FREEZE for backward compatibility;
574        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
575      - corresponding modifs for TAF directives
576    o added surface flux output variables to TIMEAVE_STATVARS
577    o time-averaged output for pkg/ptracers
578    o fix problem with ECCO-related divided adjoint
579      snapshot file was missing some ad-variables,
580      but no warning issued by TAF
581    
582    checkpoint52a_pre
583    o some bug fixes for #undef REAL4_IS_SLOW
584    
585    checkpoint52 = ecco_c52_e35
586    o after testing adjoints of checkpoint51u_post
587    
588    checkpoint51u_post
589    o this is the post-merge tag of the ecco-branch
590      (needs another clean checkout and re-testing)
591    o various natl_box_adjoint configs and results
592      but no input fields
593    o obcs adjoint not yet merged!
594    o adding ECCO global 1x1 and 2x2 degree configs
595    o updated/extended some store directives for seaice
596    o pkg/ecco now containes ecco-specific part of cost function
597    o top level routines the_main_loop, forward_step
598      supersede those in model/src/
599      previous input data.cost now in data.ecco
600      (new namelist ecco_cost_nml)
601    o in ctrl/ cleaned some cross-dependencies and updated CPP options
602    
603    checkpoint51t_post
604    o this is the pre-merge tag of the ecco-branch
605    
606    checkpoint51s_post
607    o cleanup: removed various obsolete #define-s
608    o pkg/grdchk
609      - renamed 'ph-grd 3' to 'grad-res'
610      - merged from ecco-branch
611        (remaining bug fixes for obcs gradient checks)
612      - additional high-precision output for testreport
613        (grep for 'precision_grdchk_result')
614    
615    checkpoint51r_post
616    o cleaned up or removed CPP_OPTIONS.h files
617    o updated results for some of the tests to reflect the new
618      optfiles (-ieee: -O0 instead of -O3)
619    
620    checkpoint51q_post
621    o cd_code:
622      - moved cd_scheme.F -> cd_code_scheme.F
623      - separate read_checkpoint from cd_code_ini_vars.F
624      - separated cd_code part from write_checkpoint
625      - updated AD_SOURCE, generated .flow
626      - added CD_CODE_VARS.h to the_main_loop
627      - Moving cd_code specific store dir.s to pkg/cd_code
628    o ctrl package totally restructured
629      - pack/unpack now optional and decoupled from
630        xx_/adxx_ I/O
631      - ctrl_pack/unpack cleaned
632        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
633      - confined inclusion of AD_CONFIG.h to where necessary.
634    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
635    
636    checkpoint51p_post
637    o create initial cd_code package
638      - WARNING: the initialization of fields within packages
639        is broken because INI_FIELDS (where READ_CHECKPOINT is
640        called) is called *before* PACKAGES_INIT_VARIABLES.
641        This seems to be backwards since
642        1) its important to initially zero the entire field including
643           the "halo" region
644        2) zeroing needs to be done *before* reading pickup info
645           and the pickup call might or might not happen in any
646           particular run
647      - this needs an overhaul for R2
648    o cleanup verification/*/code/GMREDI_OPTIONS.h
649    o cleanup testreport
650    
651    checkpoint51o_post
652    o bringing AD-related verif's up to date with genmake2
653      - carbon/
654      - global_ocean.90x40x15/
655      - hs.94.1x64x5/
656      - (front_relax/ )
657    o (more) consistent directory structure for AD-related verif.'s
658    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
659    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
660    o bug fix in find_alpha.F for MDJWF:
661      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
662        change rho -> rho-rhoConst
663      - replace call find_rho to find_rhonum
664    o initialisation of rFlx extended to full array (required by TAF)
665      and shifted to thermodynamics
666    o removed PTRACERS.h in ptracers routine
667    o added surfacetendencyPtr to S/R parameter list pracers_forcing
668    o Correcting initialisations for fVerU, fVerV.
669    o helping TAF to recognize dependency on kUp for
670      fVerU, fVerV
671    o Replacing delZ by delR in pkg/ctrl/
672    checkpoint51o_pre
673    
674    o undid all of cp51 pending some cleanups and discussion
675    o added the [#include "AD_CONFIG.h"] statement to all files that need
676       it for adjoint/tl #defines
677     o re-worked the build logic in genmake2 to support AD_CONFIG.h
678     o removed tools/genmake since it no longer works
679    
680    checkpoint51n_post
681    o modifications to make FREEZE flux visible to pkg/kpp
682      - moved surfaceTendencyTice from pkg/seaice to main code
683      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
684      - subroutine FREEZE now limits only surface temperature
685        (this means new output.txt for global_ocean.90x40x15,
686         global_ocean.cs32x15, and global_with_exf)
687    o added surface flux output variables to TIMEAVE_STATVARS
688    
689    checkpoint51n_pre
690    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
691    o added [#include "AD_CONFIG.h"] to all files that use the following
692      defines:
693      - ALLOW_ADJOINT_RUN
694      - ALLOW_TANGENTLINEAR_RUN
695      - ALLOW_ECCO_OPTIMIZATION
696    
697    checkpoint51m_post
698    o incorporating changes to get TAMC/TAF working in genmake2
699      - added new TAMC/TAF targets to the Makefile
700      - various cleanups related to package handling
701      - these changes should have no impact on the forward model
702    
703    checkpoint51l_post
704    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
705     - faster algorithm for cal_addtime.F
706     - higher precision arithmetic, where needed
707     - pkg/exf *startdate variables changed from calendar date to
708       model integration time
709    
710    checkpoint51l_pre
711    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
712    o enable to apply restoring on S & T only in a latitude band.
713    o update output (external_forcing_surf modif. change truncation errors)
714       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
715    
716    checkpoint51k_post
717    o change default to: useNHMTerms=.FALSE.
718     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
719       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
720     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
721        exp1, ideal_2D_oce
722     - change data file of oceanic exp (leave the results unchanged for now)
723       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
724    o set gravitySign automatically according to the vertical coordinate used
725      (and change sign: back to "logical" value: +1 when R increases downward)
726    o added an include barrier to the default CPP_OPTIONS.h and
727      removed the #include "PACKAGES_CONFIG.h" from it
728    o fix a bug in mom_fluxform (from chk51j_post)
729    
730    checkpoint51j_post
731    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
732    o adjusted some flow directives (dynamics, thermodynamics)
733    o added cubed-sphere case to test cost function
734    o heckpoint_lev?_directives.h now include
735      pkg-specific directives, whenever those are enabled.
736    o Moving pkg-specific flow directives to corresponding pkg
737      Moving pkg-specific differentiation list to corresponding pkg
738      Moving pkg-specific checkpoint-lev storing to corresponding pkg
739      ---> conventions are
740           - pkg_ad.flow
741           - pkg_ad_diff.list
742           - pkg_ad_check_lev?_dir.h
743    
744    checkpoint51i_post
745    o merge of the branch-genmake2
746      - knowingly breaks the older genmake
747      - automatic generation of all ALLOW_${PKG_NAME} defines
748      - new testreport supersedes older testscript
749    o large number of package inclusion and header cleanups
750    checkpoint51i_pre
751    
752    o new output for adjoin of global ocean vector invariant
753    o fix for checkpoint of thermodynamic seaice and bulk_force
754    o Steph gchem various cleanups
755    
756    checkpoint 51h_pre
757    o fixed some single quotes
758    o modify gchem pkg to be more versatile
759    o modifications to clean up dic pkg
760    o add pkg/cfc
761    
762    checkpoint51g_post
763    o provide links for ARPACK and ADM*TLM
764    o start removing verification/vero/
765    o update AD-related stuff
766      (in particular some IF-statements in model/src/ routines)
767    o adding to verification/global_ocean.90x40x15/ adjoint of
768      vector invariant setup
769    
770    checkpoint51f_post
771    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
772    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
773      of tracer Green's fucntions for ocean inversion project.
774    
775    checkpoint51f_pre
776    o Added on-the-fly spatial interpolation capability
777        "USE_EXF_INTERPOLATION" to pkg/exf.
778      - This is a temporary Cartesian-grid hack until
779        the super-duper ESMF coupler becomes available.
780      - See verification/global_with_exf/README for usage example.
781      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
782        flags and modified pkg/seaice accordingly.
783    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
784        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
785        non-local transport term.
786    
787    checkpoint51e_post
788    o pkg/mom_vecinv:
789      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
790      - add time-ave diagnostic of vorticity advection.
791    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
792    o atmospheric geopotential: - include water vapor effect;
793                                - use p^kappa in p* scaling.
794    o land pkg: read initial state from files.
795    o AIM : add stratospheric drag in the upper level
796    
797    checkpoint51d_post
798    o change function ILNBLNK (=> last non-blank char.) to return zero
799      (instead of the string length) when the string. char is empty
800    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
801    o modif's to restore TAMC compatibility
802      - avoid "_d" constructs in PARAMETER declarations
803      - avoid interrupting lines by comment lines
804    o Use cluster local disks for purely local I/O
805      vs. globally visible disks needed for ctrl stuff
806      (merged from ecco-branch)
807      - new active_file_loc... and mdsio_..._loc routines
808      - affected packages: autodiff, ctrl, grdchk, mdsio
809    
810    checkpoint51c_post
811    o introducing integer flag debugLevel
812      - debLevZero: suppress all output
813      - debLevA: standard
814      - debLevB: equivalent to current debugMode=.TRUE.
815    o introducing pathname variable mdsioLocalDir for mdsio
816      that can be specified at runtime
817      (relevant for cluster I/O to local disk)
818    `
819    >>>checkpoint51b_post
820    adjoint of ptracers
821    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
822    o extended state in checkpoint_lev?, etc.
823    o alternative ctrl/cost with tr1 or ptracer
824    o new comlev1_bibj_ptracers
825    o new ptracers.flow
826    o made ptracers_forcing same as external_forcing_s
827    o added verification for adjoint with ptracers
828      - adm. grdchk fail so far
829      - tlm. grdchk OK
830      - checked tapelev/comlev recomputations: OK
831    <<<checkpoint51b_pre
832    
833    checkpoint51a_post
834    o added code for biogeochemistry package
835      - new pkgs: dic, gchem
836      - new subroutine in ptracers
837    o modify code for biogeo packages
838      - in model/src and pkg/ptracers
839    
840    checkpoint51
841    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
842      - autodiff, ctrl, exf, grdchk, seaice
843      kept separate packages
844      - cost, ecco, obcs
845    o updating verification/internal_wave, verification/lab_sea
846      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
847    
848    checkpoint50i_post
849    o Preparing next differentiable checkpoint and sync
850      of MAIN vs. ecco-branch
851      - 1st step: this one is differentiable
852      - 2nd step: next(! not this) checkpoint will have updated packages
853                  from ecco-branch)
854    
855    checkpoint50h_post
856    o new package "land": provide surface BC for AIM.
857    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
858    o AIM: use true log-P extrapolation for near surface temp (= as in
859        F.Molteni paper) ; update aim.5l_cs output.
860    o New variable in PARM03 for more flexible pickups
861    o somewhat cleaned package initialisation sequence for
862      ctrl/ cost/ ecco/ in packages_... routines
863    
864    checkpoint50g_post
865    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
866      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
867      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
868        made the default because of faster convergence than ADI
869    
870    checkpoint50f_post
871    o exf totally restructured
872      - replaced all exf_set_ routines by one generic exf_set_gen.F
873        and made sure it's still differentiable
874      - split exf_getffields.F into new exf_bulkformulae.F
875      - exf_inscal_/exf_outscal_ suffixes consistent with field names
876      - updated adjoint/makefile and relevant verif. accordingly
877    
878    checkpoint50f_pre
879     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
880          + change Evap over land. (update aim.5l_cs output)
881     o added missing .cvsignores and made uniform across expts
882     o changed configuration of tidal_basin_2d expt
883     o added pkg/debug functions for tracing code in fatal crashes
884     o tidied pkg/monitor to use MONITOR_OPTIONS.h
885     o new fn in pkg/monitor to stop model if solution grows too big
886     o removed lots of single quotes from comments
887    
888    checkpoint50e_post
889    o make KPP work with PTRACERS
890     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
891       nearly a copy of kpp_transport_s
892     - there is no analogue to SurfaceTendencyS, so I have to use
893       gPtr(of the surface layer) instead
894    o add a new platform SunFire+mpi (SunFire 15000) to genmake
895    checkpoint50e_pre
896    
897    checkpoint50d_post
898    o change kpp output from multiple-record state files to single-record state
899      files analogous to write_state.F
900    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
901      analogous to the cg2d-related output.
902    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
903      so that writing to internal file fn (with length 512) fails.
904    checkpoint50d_pre
905    
906    checkpoint50c_post
907    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
908    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
909    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
910    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
911    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
912    
913    checkpoint50c_pre
914    Merging from release1_p13:
915    o bug fix for pkg/seaice dynamic solver
916    o Added SEAICE_initialHEFF to pkg/seaice
917    
918    checkpoint50b_post
919    o store u*,v* in gU,V instead of in guNm1,gvNm1
920    o in order to put the momForcing out of the Adams-Bashforth:
921      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
922      to timestep.F
923    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
924    o re-generate output for highly sensitive test-exp:
925       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
926    
927    checkpoint50b_pre
928    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
929    o corrected CPP option mismatch in exf_Bulk... functions for case
930      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
931    
932    checkpoint50a_post
933    o Bug fix for merging between c50 and KPP.
934      ikey was passed from thermodynamics to kpp_calc via
935      common block rather than being recomputed in kpp_calc,
936      in contradiction with new key itdkey.
937      New key ikppkey created, and tamc.h headers updated.
938    
939    checkpoint50
940    - 2nd step of merge with ecco-branch:
941      merge changes in ecco-branch back into main trunk
942    - bug fix in find_alpha
943    - more storing in gmredi_calc_tensor.F, kpp_routines.F
944    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
945    - merged some sliced AD support routines
946    
947    checkpoint49
948    merged from ecco-branch:
949    o exf:
950      - Enable initialisation of forcing fields to constant
951        (runtime) values.
952      - in exf_getffields.F
953        Reduce i-/j-loop to interior domain, discarding overlaps.
954        That also fixes wrong TAF-key computations for key_1, key_2
955        with bulf formulae.
956      - exf_init.F modify #ifdef for exf_init_evap
957      - exf_getffieldrec.F, ctrl_getrec.F
958        The following INT-usages are not safe:
959          fldsecs  = int(fldsecs/fldperiod)*fldperiod
960          fldcount = int(fldsecs/fldperiod) + 1
961        and were modified.
962    o autodiff: checkpoint_lev...
963      - updated storing for bulk formulae (some arrays were missing)
964      - added state for seaice package
965      - synchronized with main branch
966    o DIVA:
967      Modif.s in
968      - the_main_loop.F
969      - the_model_main.F
970      and added cost_final_restore.F cost_final_store.F
971      o With these changes, it is possible to fully separate
972        the first forward run to compute the cost function (mdthe_main_loop)
973        and adjoint runs over individual DIVA intervals (adthe_main_loop)
974        into separate model executions.
975        This enables better tuning of DIVA to given queue sizes.
976      o Loss of cost function value in consecutive DIVA runs is
977        fixed by storing to 'costfinal' file.
978      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
979        beginning/end of adjoint integration is accounted for.
980      The current changes apply to TAF-1.4.26.
981      TAF has one remaining bug, requiring one manual change
982      (see MITgcm manual).
983    o cal: synchronized between MAIN and ecco-branch
984    
985    checkpoint48i_post
986    o Changes to restore differentiability of code w.r.t. previous tag
987      (mostly adding new routines to make list and replacing
988      pressure by totPhiHyd).
989    o Updated and merged grdchk package
990      - has both ADM and TLM checks
991      - works for single- and multi-proc.
992      - output cleaned
993      - worked successfully for parallel DIVA
994    o genmake:
995      - Adding -platform=SP4
996      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
997    o Modif. for DIVA:
998      ctrl_unpack should not be called in intermediate DIVA interval.
999      (similar thing would apply for active files such as
1000      tbar, sbar, psbar, which should not be reinitialised;
1001      only relevant for ecco-branch)
1002    
1003    checkpoint48h_post
1004    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1005    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1006    o Added SEAICE_initialHEFF to pkg/seaice
1007    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1008    
1009    checkpoint48g_post
1010    --- EOS:
1011    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1012      store total Potential in totPhyHyd for diagnostics & EOS.
1013    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1014    --- Pressure/geopotential gradient:
1015    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1016    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1017      ( changes results of global_ocean_pressure )
1018    o NLFS + z-coord.: add eta*Rho' contribution.
1019    o accurate phiHyd when using interface-W at the middle between 2 centers
1020     ( changes results of ideal_2D_oce )
1021    o includes r* 2nd term in potential gradient.
1022    
1023    checkpoint48f_post
1024    Merging from release1_p12:
1025    o Modifications for using pkg/exf with pkg/seaice
1026      - improved description of the various forcing configurations
1027      - added basic radiation bulk formulae to pkg/exf
1028      - units/sign fix for evap computation in exf_getffields.F
1029      - updated verification/global_with_exf/results/output.txt
1030    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1031      (SBO) core products, including oceanic mass, center-of-mass,
1032      angular, and bottom pressure (see pkg/sbo/README.sbo).
1033    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1034      to avoid negative values in shallow regions.
1035      - updated verification/natl_box/results/output.txt
1036      - updated verification/lab_sea/results/output.txt
1037    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1038    o Added useSingleCpuIO option (see PARAMS.h).
1039    o Updated useSingleCpuIO option in mdsio_writefield.F to
1040      work with multi-field files, e.g., for single-file pickup.
1041    o pkg/seaice:
1042      - bug fix in growth.F: QNET for no shortwave case
1043      - added HeffFile for specifying initial sea-ice thickness
1044      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1045    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1046      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1047    o pkg/seaice:
1048      - adjoint-friendly modifications
1049      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1050    
1051    checkpoint48e_post
1052    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1053    o dynamics: change definition of computational domain & adapt mom_fluxform
1054      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1055    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1056        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1057        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1058        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1059        inverted_barometer solid-body.cs-32x32x1
1060      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1061    
1062    checkpoint48d_post
1063    o in preparation for r*:
1064     a) use pre-computed gradient of hydrostatic potential:
1065        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1066     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1067        => affects results of glob_oce_pressure (different truncation error)  
1068      update output.txt of ideal_2D_oce & global_ocean_pressure
1069    
1070    checkpoint48d_pre
1071    o in preparation for r*:
1072      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1073      pass the 2 comp. of the grad. as arguments to momentum S/R.
1074      but for the moment, only used if it does not change the results.
1075    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1076    
1077    checkpoint48c_post
1078    Modifications in treatment of initial flux forcing controls
1079    to avoid extra storing of flux fields.
1080    
1081    checkpoint48c_pre
1082    o Added tidal_basin_2d experiment (currently 1D!)
1083    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1084    
1085    checkpoint48b_post
1086    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1087     (modification to pressure gradient not yet implemented)
1088    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1089      (for U & V) that are used for vertical advection of momentum.
1090    
1091    checkpoint48a_post
1092    o In preparation for r*, use temp. array to compute vertical transport
1093       in flux-form momentum pkg. => change results of few test-exp.
1094      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1095                        lab_sea, natl_box & plume_on_slope
1096    
1097    checkpoint48
1098    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1099    
1100    checkpoint47j_post
1101    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1102    o moved adexch from forward_step to addummy_in_stepping
1103    o added exch in ctrl_map_...
1104    o aveFreq.=0. at end of cost_final to avoid overwrite in
1105      reverse checkpointing loop
1106    o Yet more changes in gmredi:
1107      * adgmredi_calc_tensor
1108        avoiding all recomputation of gmredi_slope_limit
1109      * adgmredi_x/y/rtransport
1110        added flag for excessive storing to avoid recomp. of
1111        u/v/rtans, dTdx/y/z
1112        -> this is not really necessary and very memory-consuming
1113      * adgmredi_slope_psi:
1114        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1115      * gmredi_slope_limit
1116        re-activated full calculation of taperfct for case 'ac02'
1117    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1118    
1119    checkpoint47i_post
1120    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1121    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1122      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1123    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1124    o gmredi: fix few bugs.
1125    
1126    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1127    This will be a good checkpoint to plug into the ecco-branch.
1128    o few modif.'s to get latest version adjointed
1129      (mainly kick out code in ini_linear_phisurf)
1130    o modif's to run adjoint with exactConserv
1131    o case GM_BOLUS_ADVEC should be cleaned
1132      S/R gmredi_slope_psi should be cleaned
1133    o verification/carbon now has exactConserv=.TRUE.
1134    
1135    checkpoint47g_post
1136    o time-average AIM output: becomes independent from statvars time-average
1137      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1138    o After TAF bug fix:
1139      Tested adjoint of gmredi package.
1140      Tests were done with checkpoint47 rather than with latest
1141      checkpoint47f_post since the latter is broken for the adjoint
1142      verification/carbon/ contains both ADM and TLM gradient checks.
1143    Here they are, before they get changed/lost/stolen.
1144    Mostly modif.'s to fix numerical sensitivities.
1145    Gradient checks OK for
1146    - GM_taper_scheme:
1147      * clipping
1148      * ac02
1149      * linear
1150      * glw91
1151      * dm95
1152      * ldd97
1153    - GMREDI_OPTIONS:
1154      * GM_VISBECK_VARIABLE_K
1155      * GM_NON_UNITY_DIAGONAL
1156      * GM_EXTRA_DIAGONAL
1157      * GM_BOLUS_ADVEC
1158    in conjunction with data.gmredi parameters to be checked in
1159    in a few minutes under verification/carbon/code/
1160    
1161    checkpoint47f_post
1162    Merging from release1_p10:
1163    o modifications for using pkg/exf with pkg/seaice
1164      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1165        and SEAICE_EXTERNAL_FLUXES
1166      - pkg/exf CPP options EXF_READ_EVAP and
1167        EXF_NO_BULK_COMPUTATIONS
1168      - usage examples are Experiments 8 and 9 in
1169        verification/lab_sea/README
1170      - verification/lab_sea default experiment now uses
1171        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1172    
1173    checkpoint47e_post
1174    o created a tag prior to creating a branch
1175    
1176    checkpoint47d_post
1177    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1178      at the bottom boundary had an erroneous half slip boundary condition
1179    o added bottom drag and no slip boundary condition capabilities to
1180      oceanic pressure coordinates code
1181    o added new verification experiment global_ocean_pressure, this experiment is
1182      also described in the tutorial section of the manual
1183    checkpoint47d_pre
1184    
1185    checkpoint47c_post
1186    o Added a verification experiment for a global cubed-sphere ocean run
1187      -  verification/global_ocean.cubed32x32x30
1188      -  uses pkg/therm_seaice and pkg/bulk_forcing
1189    
1190    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1191    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1192      when using P-coordinate; only implemented for atmospheric config.
1193    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1194      NOTES: requires option NONLIN_FRSURF to be "#define".
1195    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1196    
1197    checkpoint47b_post
1198    Merging from release1_p9:
1199    o pkg/seaice
1200      - removed GOTO's and added taf directives
1201      - double precision constants to reduce the g77 (Linux)
1202        to F77 (SGI) differences reported in release1_p8
1203    o tools/genmake
1204      - added SGI options
1205    o verification/testscript
1206      - updated to that of checkpoint47a_post
1207    o verification/global_ocean.90x40x15/input/eedata
1208      - modified for SGI f77 compatibility
1209    o verification/lab_sea
1210      - added description of sea-ice model
1211      - added missing matlab routines
1212      - added test of thermodynamics parallelization
1213    
1214    checkpoint47a_post
1215    o new pkg: aim_v23
1216     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1217       for now, keep the same surface forcing as before.
1218     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1219     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1220     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1221    o add diagnostic of surface correction term in monitor output
1222    
1223    o bulk_force and therm_seaice
1224    - Two packages:  bulk_force (Bulk forcing)
1225      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1226    - Earlier integration from Stephaine Dutkiewicz
1227      and Patrick Heimbach.
1228    - Two ifdef statements for compile time,
1229       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1230    
1231    checkpoint47
1232    differentiable version of checkpoint46n_post
1233    o bug fix in quasihydrostaticterms
1234    o * "clean" adjoint code (in terms of extensive recomputations)
1235        can now be obtained for all GMREDI options (i.e. for
1236        - GM_VISBECK_VARIABLE_K
1237        - GM_NON_UNITY_DIAGONAL
1238        - GM_EXTRA_DIAGONAL
1239        - GM_BOLUS_ADVEC )
1240      * However, wrong gradient check problem remains unsolved.
1241      * New CPP options have been introduced for different
1242        tapering schemes
1243    o external_fields_load now part of differentiation list
1244    o pressure needs multiple storing;
1245      would be nice to have store_pressure at beginning or
1246      end of forward_step, e.g. by having phiHyd global (5-dim.)
1247      (NB: pressure is needed for certain cases in find_rho,
1248      which is also invoked through convective_adjustment).
1249    o recomputations in find_rho for cases
1250     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1251    o #define ATMOSPHERIC_LOADING should be differentiable
1252    o ini_forcing shifted to begining of initialise_varia
1253    o Incorporating QNVS line search routines into MITgcm
1254      (this is separate code, and therefore not under pkg)
1255      lsopt/, optim/
1256    o Updated verification/carbon/
1257      - #define GM_VISBECK_VARIABLE_K
1258      - GM_taper_scheme    = 'ldd97'    
1259    
1260    checkpoint46n_post
1261    Merging from release1_p8:
1262    o verification/natl_box:
1263      updating new external_fields_load routine
1264    o New package: pkg/seaice
1265      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1266      The sea-ice code is based on Hibler (1979-1980).
1267      Two sea-ice dynamic solvers, ADI and LSR, are included.
1268      In addition to computing prognostic sea-ice variables and diagnosing
1269      the forcing/external data fields that drive the ocean model,
1270      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1271      The implied surface heat flux is then stored in variable
1272      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1273      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1274      non-local transport term.  Because this call precedes model
1275      thermodynamics, temperature under sea-ice may not be "exactly" at
1276      the freezing point by the time theta is dumped or time-averaged.
1277      N.B.: fairly large differences in accuracy occur across
1278            different platforms/compilers; comparison between
1279            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1280            generated output gives:
1281       T           S           U           V
1282      C D M    c        m  s        m  s        m  s        m  s
1283      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1284      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1285      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1286    
1287      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1288    o GAD:
1289      - generated new common blocks to account for call of
1290        same gad routines with differing traceridentities
1291        (needed to modify tracerIdentity indices in GAD.h)
1292      - generated separate common blocks for case useCubedSphereExchange
1293        (Department of Futurology)
1294      - parameter lists to gmredi_?transport: added tracerIdentity
1295      - added new key indices to tamc.h
1296    o external_fields_load:
1297      - added this routine to TAF list
1298      - needed to make some common blocks global and additional storing
1299        along the same lines as exf package (checkpoint_lev?_directives.h)
1300    o exf:
1301      updated external forcing package
1302      - bug fixes carried over from ecco-branch
1303        (missing OBCS_OPTIONS.h in two routines)
1304      - enable easy to use "no forcing".
1305      - added exf I/O for atmospheric loading
1306      - added exf I/O for runoff data
1307      - transfered scaling between exf <-> MITgcm to exf namelist
1308    o Adding new verification experiment global_with_exf.
1309      This verification experiment is almost identical to the
1310      global_ocean.90x40x15 experiment, except that it uses
1311      the exf (and cal) package instead of the
1312      external_fields_load routine (cf README file).
1313    
1314    checkpoint46m_post
1315    o modified testscript to return -- when there are no lines of "%MON" output
1316    o added new flag "quasiHydrostatic" for QH mode
1317      and new routine quasihydrostaticterms()
1318    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1319      New routine: mom_u_coriolis_nh()
1320    o fixed sign of non-hydrostatic metric terms in u and v equations.
1321      Depend on correct sign of gravitySign.
1322    o added work.pc* to .cvsignore in aim directories using ifc
1323    o introduced flag for controllin non-hydrostatic metric terms
1324    o removed gravitySign from PARM04
1325    o switched to g77/ifc from pgf77 in aim experiments
1326    
1327    checkpoint46l_post
1328    o made convective adjustment work with pressure coordinates:
1329     - changed the direction of k-loop in convective_adjustment.F for the
1330       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1331     - adjusted the reference pressure k-index in convective_adjustment.F
1332     - adjusted the convection condition in convect.F (in analogy to
1333       calc_ivdc.F)
1334     - convective_adjustment no longer computes anything on the halos
1335     - removed the warnings about negative salinity from find_rho.F and
1336       find_alpha.F; instead the new routine look_for_neg_salinity, called
1337       at the beginning of find_rho, find_alpha, and find_beta, does a
1338       check of the entire slice, if CPP-option
1339       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1340    checkpoint46l_pre
1341    
1342    checkpoint46k_post
1343    o fixed the verification/global_ocean.90x40x15 experiment:
1344     - new bathymetry (the world according to A., JMC, and M.)
1345     - new initial fields and forcing fields (*.bin files)
1346     - new POLY3.COEFFS (for the next release one should switch to a full
1347       equation of state: JMD95P or MDJWF)
1348     - fixed several errors and redundancies in the data file
1349     - experiment uses looped cells
1350     - added matlab directory with diagnostic scripts for plotting of output
1351    
1352    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1353     - read AIM physics parameters from a file (data.aimphys)
1354     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1355    
1356    checkpoint46j_post
1357    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1358    o move wVel computation at the end of the time step, in S/R integr_continuity
1359    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1360    o update timeave pkg for wVel diagnostic.
1361    checkpoint46j_pre
1362    
1363    checkpoint46i_post
1364    o Clean up AIM package (and keep the results unchanged):
1365      include CPP_OPTION and use IMPLICT NONE in all routines ;
1366      declare all the variables _RL ; use _d 0 for all numerical constants.
1367      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1368    
1369    checkpoint46h_post
1370    o cleaned up the use of rhoNil and rhoConst.
1371      - rhoNil should only appear in the LINEAR equation of state, everywhere
1372        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1373        and the dynamical equations are all divided by rhoConst
1374    o introduced new parameter rhoConstFresh, a reference density of fresh
1375      water, to remove the fresh water flux's dependence on rhoNil. The default
1376      value is 999.8 kg/m^3
1377    o cleanup up external_forcing.F and external_forcing_surf.F
1378      - can now be used by both OCEANIC and OCEANICP
1379    checkpoint46h_pre
1380    
1381     Added code to convert surface volume flux (fresh water) into
1382     a mass flux when using P coordinates in the ocean (OCEANICP).
1383     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1384    
1385    checkpoint46g_post
1386    o Include a new diagnostic variable phiHydLow for the ocean model
1387      - in z-coordinates, it is the bottom pressure anomaly
1388      - in p-coordinates, it is the sea surface elevation
1389      - in both cases, these variable have global drift, reflecting the mass
1390        drift in z-coordinates and the volume drift in p-coordinates
1391      - included time averaging for phiHydLow, be aware of the drift!
1392    o depth-dependent computation of Bo_surf for pressure coordinates
1393      in the ocean (buoyancyRelation='OCEANICP')
1394      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1395        Theta, Salinity, and Pressure in the parameter list. This routine is
1396        presently contained in find_rho.F. This routine does not give the
1397        correct density for 'POLY3', which would be a z-dependent reference
1398        density.
1399    o cleaned up find_rho
1400      - removed obsolete 'eqn' from the parameter list.
1401    o added two new verification experiments: gop and goz
1402      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1403    checkpoint46g_pre
1404    
1405    checkpoint46f_post
1406    o Enable tangent linear (forward mode) gradient checks:
1407      - extended active file handling to g_... files
1408      - added TANGENT_SIMULATION to theSimulationMode
1409      - extended grdchk package accordingly
1410    o added tangent linear setup in verification/carbon/code_ftl
1411    o added adjoint setup in verification/front_relax/code_ad
1412    
1413    checkpoint46e_post
1414    o Added new equation of state -> MDJWF
1415      - EOS of McDougall et al., 2002, JAOT, submitted
1416      - caveat: the equation of state is only valid for a smaller (more
1417        realistic?) range of values than JMD95P/Z and UNESCO
1418      - added masks to the calculation of pressure in store_pressure
1419      - added more check values for density in check_eos (ini_eos.F), some of
1420        the old check values are out of the range of the MDJWF-eos, so don't
1421        expect perfect matches for those
1422    checkpoint46e_pre
1423    
1424    checkpoint46d_post
1425    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1426      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1427      case of pressure coordinates. eosType='JMD95Z' in
1428      combination with buoyancyRelation='OCEANICP' now causes an error.
1429    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1430      in find_alpha/beta.
1431    checkpoint46d_pre
1432    
1433    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1434      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1435    
1436    checkpoint46c_post
1437    o Changes necessary for ocean in p-coordinates
1438     -  Added new buoyancy relation = 'OCEANICP'
1439     -  Added new parameters = gravitySign (this used to be contained inside
1440        the factor dRdZ which I added when we first switched to R coordinates).
1441     X GM/Redi is not compatible (yet)
1442     X bottom drag and no-slip need to be debugged.
1443    checkpoint46c_pre
1444    
1445    checkpoint46b_post
1446    o Added new equation of state -> JMD95Z and JMD95P
1447      - EOS of Jackett and McDougall, 1995, JAOT
1448      - moved all EOS parameters into EOS.h
1449      - new routines ini_eos.F, store_pressure.F
1450    o Added UNESCO EOS, but not recommended because it requires
1451      in-situ temperature (see JMD95)
1452    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1453      unesco.f to be used with POLY3
1454    checkpoint46b_pre
1455    
1456    checkpoint46a_post
1457    o Added (atmospheric) pressure loading
1458      - new field in FFIELDS.h, etc...
1459      - new cpp flag ATMOSPHERIC_LOADING
1460    o Changed hFacC to _hFacC in calc_phi_hyd.F
1461    o Added SHORTWAVE_HEATING to some files for consistency
1462    checkpoint46a_pre
1463    
1464    checkpoint46
1465    further merges from release1_p5
1466    o new ctrl package
1467      - adopted from ECCO environment to enable optimization
1468      - added Eliassen Palm fluxes to controls
1469    o added Eliassen Palm flux controls to gradient check package
1470    o cost package
1471      - Compatible with new ctrl package
1472      - added Eliassen Palm cost hooks
1473      - modif's of existing cost functions
1474    o Adjoint-related bug fixes in kpp:
1475      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1476      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1477    o autodiff package
1478      - flow directives:
1479        + new for S/R do_the_model_io
1480        + enhanced for S/R checkpoint
1481        + new gmredi.flow
1482      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1483        disable adcommon.h/g_common.h by default.
1484      - fixed problem for adjoint of global_max
1485    o modified verification/carbon/
1486    o New setup for adjoint of global_ocean
1487    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1488    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1489    o incorporated hooks for sponge layer code (external_forcing.F)
1490    
1491    checkpoint45d_post
1492    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1493    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1494      (affects plume_on_slope "cg2d" output)
1495    o add new parameter deltaTfreesurf for free-surface time stepping
1496    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1497    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1498    o change phiMin in exp1 (to agree with documentation)
1499    o add new flags:
1500     - T,S forcing inside/outside Adams-Bashforth
1501     - turn off temp,salt advection and/or forcing
1502     - for each tracer, define internal flag for multiDimAdvection & A-B
1503    o monitor: change definition of KE to check conservation of Energy
1504    
1505    checkpoint45c_post
1506    o Removed f90 comments ("!")
1507    o Modified initialisations to enable exf package for MITgcm
1508      (without invoking ECCO_PACKAGE).
1509    o modifications to gradient check package (Martin Losch)
1510      - enable centered differences
1511      - modified format of standard output
1512    
1513    checkpoint45b_post
1514    o cleaned exchange calls in cg2d
1515    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1516    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1517      to configure barotropic setup (Martin Losch)
1518    o moved some initialisations within bi,bj loop in dynamics
1519      (TAF flow dependency)
1520    o in initialise_varia, moved call packages_init_variables
1521      before convective_adjustment_init
1522      (corresponding adjustment of TAF tape initialisation).
1523    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1524    
1525    checkpoint45a_post
1526    o compute Rho over the whole domain (extend iMin,jMin indices)
1527    o specific exchange for X-slice domain (case Ny=1)
1528    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1529    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1530    
1531    checkpoint44h_post = checkpoint45
1532    o Fix to restore differentiability:
1533      place at which packages_init_variables is called in
1534      initialise_varia is crucial for reverse control flow.
1535    o modifications in GMRedi to enable stable adjoint
1536      (corresponding modif's in thermodynamics, dynamics)
1537    o added missing hook for sponge layer code in external_forcing
1538    o modified test cost functions
1539    o storing in gad_advection (plus removal of write(0,*)!
1540    o missing headers TR1.h added in convective_adjustment routines
1541    o errorMessageUnit set non-equal zero in eeboot
1542      (conflict on some platforms, e.g. IBM SP3)
1543    o modified carbon verif.
1544    
1545    checkpoint44h_pre
1546    o vertical grid option: allow to put the Interface at the middle between
1547      2 cell-centers ; replace delZ in pkg/kpp by drF.
1548    o GM Advective form: Tracers are advected using the residual transport (=
1549      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1550    
1551    checkpoint44g_post
1552    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1553      results) ; ifdef missing in thermodynamics.F
1554    
1555    checkpoint44f_pre,checkpoint44f_post
1556    o added PTRACERS package
1557      This allows an arbitrary number of passive tracers to be integrated
1558      forward simultaneously with the dynamicaly model.
1559      + Implemented so far:
1560        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1561        - I/O and checkpointing
1562        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1563      + Not implemented so far:
1564        - KPP
1565        - OBCS
1566      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1567        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1568        line in data.pkg.
1569      + This package is disabled by default since it increases storage.
1570    
1571    
1572    o testscript: added -cleanup option
1573    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1574                 b) enable to filter 2D fields.
1575    
1576    checkpoint44e_pre,post
1577    o re-wrote convective adjustment to use pre-calculated weights
1578      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1579      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1580      Original calls to convect() still in place.
1581    
1582    chkpt44d_pre,post
1583    o added missing EXCLUDE_MONITOR flags
1584    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1585      (incompatible typ in MIN/MAX expressions caused problems
1586      on IBM SP3)
1587    o in genmake added variable MAKEDEPEND
1588      plus resetting for case SunOS
1589    o added timer_stats.c routine for IBM SP3
1590    o removed variables in dynamics
1591    !!! I forgot to create tag chkpt44d_pre !!!
1592    !!! But chkpt44d_pre = chkpt44c_post    !!!
1593    
1594  o real fresh water flux implemented with non-linear free-surface.  o real fresh water flux implemented with non-linear free-surface.
1595    

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