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revision 1.589 by jmc, Thu Dec 8 22:25:07 2005 UTC revision 1.775 by mlosch, Thu Mar 8 14:46:12 2007 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
8      directly to drive seaice model (C-grid only)
9    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
10     - reintroduce computation of wind from stress,
11     - compute tau (in exf_bulkformulae.F) from windstress averaged to
12       mass points to avoid tau = 0
13     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
14    o rdmnc.m: make it work with "global" files created with gluemnc
15    o rdmnc.m : some improvements in dealing with singleton dimension
16      (tested on all testreport mnc output files).
17    o genmake2: disable pkg/profiles if netcdf test fails.
18    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
19    o move call to cal_readparms up to make calendar parameters/variable available
20      to all packages
21    
22    checkpoint58v_post
23    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
24      useDynP_inEos_Zc tested.
25    o pkg/exf: changes to properly interpolate/mask/scale initial fields
26    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
27      and portions thereof.  See read_cs.txt for description and examples.
28    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
29      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
30      following the great-circle arc between those 2 points.
31    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
32      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
33    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
34     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
35     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
36     - still needs work (not working with some options ; efficiency to improve)
37       and serious testing.
38     - use this scheme for temperature & salinity in 2 advection test exp.:
39       advect_xy & advect_xz, respectively.
40    
41    checkpoint58u_post
42    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
43    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
44    o testreport: add option "-skipdir" to skip some test.
45    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
46      momentum calculation.
47    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
48    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
49      remove checkpoint.F and the_correction_step.F (no longer used);
50      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
51    o add option (linFSConserveTr) to correct for tracer source/sink due to
52      Linear Free surface
53    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
54    o pkg/thsice: fix reading mnc-pickups
55    
56    checkpoint58t_post
57    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
58    o pkg/mdsio:
59     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
60       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
61       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
62     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
63     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
64       either MDS_READ_FIELD or MDS_WRITE_FIELD )
65     - new S/R (to replace MDSWRITEMETA), which allows to write more
66       informations (variable names, time ...) to meta files.
67     - modify rdmds.m to give back the meta file content.
68    o pkg/diagnostics: change vertical interpolation to be safer, and more
69       flexible (define p-levels to interpolate to in data.diagnostics);
70      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
71       diagnostic pointer.
72    o pkg/seaice: more cleaning up of seaice_growth, added many comments
73    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
74    o fix multi-category seaice:
75     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
76       SEAICE_MULTICATEGORY
77     - fix short wave heat flux
78    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
79       and allow to use EVP solver. Change forward lab_sea: test both EVP
80       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
81    o Initial check-in of lab_sea adjoint
82      (very similar to natl_box_adjoint/code_seaice)
83      * used C-grid and EVP solver
84      * used KPP, GM/Redi
85      * uses inAdExact=.TRUE.
86      * gradient checks fail for both ADM and TLM
87        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
88        f.d. gradients actually seem more problematic than ADM, TLM gradients;
89        issue is related to forward mismatch between g77 an ifort
90    o pkg/seaice: overhaul of thermodynamics
91     - growth.F and groatb.F are replaced by new routine seaice_growth.F
92     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
93     - move a few global fields out of SEAICE.h into seaice_growth.F and
94       make them 2D (FICE/QNETO/ ...)
95     - remove FO (it is the same as QNETO)
96     - introduce a few local fields to avoid modifying external fields such
97       as atemp, etc.
98    
99    checkpoint58s_post
100    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
101      changed exf_set_gen.F so that
102        genperiod=0 means input file is one time-constant field and
103        genperiod=-12 means input file contains 12 monthly means
104    o CG2D: use pre-computed solver main-diagonal (stored in common block);
105      this affects truncation error ; generate new output file for exp. which
106      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
107        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
108        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
109        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
110        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
111        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
112    o start implementation of deep-atmosphere and anelastic formulation
113    o verification: remove 2nd copy of input files and use script "prepare_run"
114      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
115    o mom_common/vecinv/fluxform: fix a few initialisation isssues
116    o profiles: fix for multithreaded case
117    
118    o diagnostics: rename few diags:
119      s/'PRESSURE'/'RCENTER '/g
120      s/'TICE    '/'oceFreez'/g
121      s/'TAUX    '/'oceTAUX '/g
122      s/'TAUY    '/'oceTAUY '/g
123      s/'SWFLUX  '/'oceQsw  '/g
124      s/DIFx/DFxE/g
125      s/DIFy/DFyE/g
126      and add few ocean-forcing diagnostics:
127      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
128    o modifications to pkg/seaice/growth.F and budget.F, which change results of
129      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
130      as actual snow thickness.  It now refers everywhere to effective snow
131      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
132    
133    checkpoint58r_post
134    o modifications to pkg/seaice/growth.F, which change results of
135      lab_sea experiment: fixes pertain to melting snow over open water, to
136      masking EVAP under sea ice, and to using the correct AREA variable for
137      computations of EVAP, PRECIP, HSNOW, and GHEFF
138    o add ability to read bathy, salt, and theta using MNC (off by def)
139    o add flooding algorithm and advection of HSNOW for pkg/seaice;
140      both are turned off by default and do no change any results
141    o seaice advection with pkg/thsice: a step toward the use of non-linear
142      advection scheme, but #ifdef or commented out for now (requires more EXCH).
143    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
144      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
145      in natl_box (affects results @ truncation level: update output.txt)
146    o multi-threading and IO:
147      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
148      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
149        (needed to work with SingleCpuIO): tested in all verif. exp.
150    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
151      affects the results (but none of the verification test uses this scheme).
152    o Adding some pkg/diagnostics capability to pkg/seaice
153      (will certainly be subject to changes)
154    o ctrl: adding new control variables:
155      lwflux, lwdown, evap, snowprecip, apressure, runoff
156    
157    checkpoint58q_post
158    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
159      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
160      high_res_cube configuration by 4% on Columbia.
161    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
162      add (in global_with_exf/code) a version of EXF_INTERP_READ without
163      dynamical allocation (seems to work in multi-threaded).
164    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
165      single CPU io) so that TAF does not have to see EESUPPORT.h
166    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
167    
168    checkpoint58p_post
169    o obcs: stop if obcs is used with useCDscheme = .true.
170    o shelfice:
171     - fix a sign error so that no slip at shelfice interface works
172     - remove stop for combination non-hydrostatic code and shelfice. That does
173       not mean, that the results are correct, but at least they are numerically
174       stable
175    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
176    o added adjoint exch routined for all exch*3d* routines
177      and updated flow directives
178    
179    checkpoint58o_post
180    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
181      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
182    o change controling S/R for writing pickup file (new S/R do_write_pickup)
183      and clean-up reading/writing of pickup files.
184    o fix local version of read/write pickup (NH part) in rotating_tank/code
185    o simplify EXCH interface:
186     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
187     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
188    o added the regrid package
189    o shelfice:
190     - add a simple boundary layer scheme to reduce noise
191     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
192    
193    checkpoint58n_post
194    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
195       local variable (not in common block).
196    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
197      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
198      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
199        to work with SingleCpuIO.
200    o add "_d 0" to real constant of pkg/cfc subroutines ;
201       update exp. cfc_exemple & tutorial_cfc_offline output files.
202    o multi-threading and IO:
203      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
204        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
205      - barrier before and after reading.
206      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
207      - avoid using MDS_WRITELOCAL for LAND pkg output.
208      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
209        common-block variables ; Allows multi-threading with master-thread IO.
210    o change default MAX_NO_THREADS from 32 to 4 ;
211      and stop cleanly when MAX_NO_THREADS is too small.
212    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
213    
214    checkpoint58m_post
215    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
216       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
217    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
218       keep global_ocean.90x40x15 (for AD testing) with former secondary test
219       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
220    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
221        add MITgcm_tutorials (= code + all the tutorials)
222    o ecco, option to compute cost for total ssh (mean+anom)
223    o consistent with addition of ptracer and ssh in pkg/profiles
224    o profiles: adding ptracer and ssh
225    o testreport: change multi-test output-file name
226      (from output.txt.{name} to output.{name}.txt)
227    o profiles: now ok for mutli-tiles case
228    o seaice: add 4 parameters for different advection schemes for area,
229      (effective) seaice thickness, enthalphy, and snow height. Their default
230      is the standard parameter SEAICEadvScheme
231    o calc_gw:
232     - add cosFacU in zonal viscous flux (harmonic.visc.).
233     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
234       of tutorial_plume_on_slope.
235    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
236    o calc_gw: true flux-form, account for horizontal grid spacing.
237      update rotating_tank results, but not plume_on_slope (affected at
238      truncation level, 11 digits).
239    
240    checkpoint58l_post
241    o calc_gw:
242     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
243     - remove side-drag for now (need to fix it); update plume_on_slope results.
244     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
245    o commit code to make SST/SSS weights spatially variable
246      (based on either variable in-situ or variable initial T/S weights)
247    o pkg/ecco:
248      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
249        now based on horizontally varying weights wthetaLev, wsaltLev
250      * cost_averagesflags now returns year indices in addition to day, month
251      * sflux balance is performed on annual basis
252        (sflxumm, sfluxmm2, bal_sfluxmm)
253      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
254        including separate counting and multipliers
255    o pkg/rbcs
256      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
257    
258    checkpoint58k_post
259    o testreport:
260     - always build in dir. "build" (if not there, mkdir build instead of building
261       & running in input)
262     - run in dir run (if it exists), in build otherwise.
263     - call prepare_run (if input/prepare_run exists)
264     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
265    o pkg/exf modifications to interpolation and rotation routines for more
266       reasonable treatment of North Pole singularity: for tracers North Pole
267       value is set to northernmost zonal-mean value, for zonal velocity it is
268       set to zero, and for meridional velocity it is set to northernmost value.
269    o pkg/exf/exf_check_range.F
270     - add tile index to diagnostics and move stop statement to the very
271       end of the routine.
272    o pkg/diagnostics: (diagnostics_main_init.F)
273      define title of isomorphic variables according to the current config.
274    o pkg/thsice with pkg/seaice dynamics:
275    - fix domain of computation (interior only, required for exf) and do exchanges
276    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
277    o towards a standard way of dealing with multi-threading in MONITOR
278      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
279    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
280       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
281    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
282    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
283    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
284       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
285    o tracer advection:
286     - clean-up and simplify calc_common_factors.F
287     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
288       advection subroutine (but still not used within DST advection S/R)
289    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
290    
291    checkpoint58j_post
292    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
293      from file (collects calls previously in FORWARD_STEP)
294    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
295    o adjoint store dir. adjusted accordingly
296    o genmake2
297      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
298    
299    checkpoint58i_post
300    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
301      on wind stress (SEAICEstressFactor defaults to 1.)
302    o Total number of Timers is finite (<=40): comment out 2 non-essential one
303      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
304    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
305      on CS-grid: no longer loosing mass.
306    o exf & curvilinear-grid: no longer modify longitude xC & xG.
307    o pkg/ggl90: fix sloppy output and fix a bug
308    o pkg/seaice: added SEAICEuseEVPpickup parameter
309      - Set to false in order to start EVP solver with
310        non-EVP pickup files when using SEAICEuseEVP
311      - fix sign error in diffusion in seaice_calc_rhs
312    
313    checkpoint58h_post
314    * Modifications for bottom topography control
315      o replace hFacC by _hFacC at various places
316      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
317      o add non-self-adjoint cg2d_nsa
318      o update autodiff support routines
319      o re-initialise hfac after ctrl_depth_ini
320      o works for 5x5 box, doesnt work for global_ocean.90x40x15
321    * Adding verification for 5x5 box (4-layer) bottom topography control
322    
323    checkpoint58g_post
324    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
325       used for mean seasonal cycle, mean diurnal cycle); add an example
326       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
327    o pkg/ggl90:
328      - add parameter (minimum surface kinetic energy)
329      - fix bug (avoiding division by zero)
330    o couple pkg/thsice to pkg/seaice:
331      - modify advection in seaice to accomodate new scalar fields to be advected
332      - only muliDimAdection scheme work with seaice/thsice
333      - mapping of thsice-variables to seaice-variables, back and forth
334      - does not break the verification experiments, but does not give the
335        desired results either
336    o pkg/seaice
337      - make (default) second order advection a bit less confusing?
338    
339    checkpoint58f_post
340    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
341      to pkg/seaice):
342      - new routines thsice_map_exf and thsice_get_exf provide the interface
343      - add an additional formal parameter to thsice_solve4temp
344    o pkg/exf:
345      - add new fields wspeed, snowprecip (to be able to couple to thsice)
346      - correct Stefan-Boltzmann constant
347      - new parameter for longwave surface emittance
348      - separate some stuff from exf_bulkformulae into new routines  
349        exf_radiation, exf_wind
350      - add new parameters and constants: longwave emissivity for ocean, ice
351        and snow, evaporation parameters over ice
352      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
353        either wind from stress or stress from wind
354    o pkg/thSIce:
355    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
356    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
357       and THSICE_CALC_THICKN
358    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
359    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
360      to make debugging easier.
361    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
362    o pkg/bulk_force:
363      - clean-up comments and parameters ;
364      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
365    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
366      generate new output for test-experiment: aim.5l_cs.thSI
367    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
368      testreport accordingly
369    
370    checkpoint58e_post
371    o SEAICE_CGRID adjoint done
372    o R_STAR adjoint implemented.
373      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
374      * need to sort out init. of h0facc, etc.
375    o Make pkg/profile fully independent of ecco,cost, etc. stuff
376      to be able to use it in pure forward.
377    
378    checkpoint58d_post
379    o upgrade simple test-experiment to tutorial example:
380     step.1: duplicate the experiment and (step.2) will remove the old copy.
381      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
382      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
383      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
384      tutorial_global_oce_biogeo    <- copy of dic_example
385      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
386      tutorial_plume_on_slope       <- copy of plume_on_slope
387      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
388      tutorial_global_oce_optim     <- empty for now (David ?)
389      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
390     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
391    o correct a sign problem in cost_scat.F
392    o obcs and ptracers: fix boundary conditions for advections schemes
393      with larger stencil
394    o thsice adjoint: start
395    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
396      completeness
397    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
398      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
399    o ptracers adjoint:
400      * avoid extensive recomputatations
401      * fix missing re-init. of gptr (missed by TAF)
402    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
403      me to turn off the excessive output to STDOUT that this package produces
404    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
405      and add those terms in Vector-Invariant formulation.
406    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
407      if the control period (xx_hfluxperiod etc) is 0
408    o in profiles pkg, clean routines and fix details
409    o in ecco pkg, reading ssh data:
410      fix problem in case the model does not start at iter0=0
411    o fix mnc-pickup/restart for ptracers
412    o new package prifiles:
413      code to compute profile-based cost by Gael Forget
414      (modifs in ecco, ctrl, autodiff)
415    o Benign bug fix in initialization (spotted by M. Mazloff) of
416      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
417    
418    checkpoint58c_post
419    o adjoint: finish NLFS adjoint and provide reference output in
420      verification/global_ocean.90x40x15/results_ad_nlfs
421    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
422      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
423      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
424      with SEAICE_CGRID defined.
425    o move calendarDumps from "data" to "data.cal" and clean-up the code
426      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
427    o add useEXF & useCAL flags (for now, set in hard-coded way)
428    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
429      (were missing in NH mode, and wrong in quasihydrostatic mode).
430      waiting for Chris updated version of calc_gw to add those CALLs.
431    o fix bug in quasihydrostatic S/R ;
432      add a test for this option: global_ocean.90x40x15.qshyd
433    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
434      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
435    o add on/off flag useOffLine for package OFFLINE
436    o seaice:
437      - modify advection so that it works also on the C-grid
438      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
439        problem in multi-tile runs with C-grid
440      - add flags for clipping ice velocities and/or masking solver forcing
441      - fix drag (ocean on ice) formulation and a bug that caused noise in the
442        C-grid solver
443      - added a few comments to seaice_diffusion.F
444      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
445        are now exclusive)
446      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
447        required re-ordering the code a little:
448       + make DAIRN global variable (defined in SEAICE)
449       + move computation of the viscosities eta and zeta into a new separate
450         routine (because I need to recompute them in seaice_ocean_stress.F)
451    
452    checkpoint58b_post
453    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
454      update output.txt of exp. aim.5l_cs.thSI
455    o various mnc cleanups and improvements:
456      + shrink lookup tables by factor of ~4
457      + better error reporting when running out of lookup space
458      + able to handle longer path/file names (up to 500 chars)
459    o adjoint:
460      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
461      - TBD: "hidden" mom_vecinv recomp. in dynamics
462    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
463     (allow to differentiate between forcing components using new integer flags:
464      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
465     and add new flag to put Dissipation tendency out of Adams-Bashforth.
466    o ecco
467      - enable trend removal from SSH anomaly obs.
468    o adjoint
469      - a fix for PmEpR when #undef EXACT_CONSERV
470      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
471      - try to fix "hidden" recomp. in forward_step for NLFS
472        (NLFS seems broken sometimes after I checked it in)
473    o seaice:
474     - add c-grid version of the dynamic solver:
475       + three new routines that are the c-grid substitute lsr, dynsolver
476         and ostres
477       + put a few fields that were local to dynsolver into global common
478         blocks, so that I can move the computation of stresses etc into
479         seaice_lsr (saves coding but may break the adjoint).
480     - replace more hardwired parameters by runtime parameters
481     - add ice masks that mask the rhs of the implicit solvers where there
482       is no ice (commented out in seaice_dynsolver, because i am not sure
483       if this works properly), eventually this should replace the clipping
484       of ice velocities in seaice_dynsolver to +/-40cm/s.
485    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
486      include it only where its needed
487    o move balancing of fluxes before the call of external_forcing_surf
488    o seaice:
489      - correct units of turning angles (now they are really in degrees)
490      - move computation of GWATX/Y out of main routine into dynsolver
491      - initialize GWATX/Y in seaice_init
492    o Apply mask on Fresh-Water flux (needed for SSH forcing).
493      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
494    o seaice: add runtime flags for turning angles (default to zero)
495    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
496      and trend from exf forcing and ctrl control adjustments
497    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
498      (since checkpoint57x_post)
499    o change the default rotation period to 86164.s = the Earth rotation
500    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
501      and based on a reference stratification. Tested within hs94.cs-32x32x5.
502    o seaice advection: add code for choosing between the default (2nd order
503      central differences) and multiDim advection schemes provided by
504      pkg/generic_advdiff
505    o seaice:
506      - removed all references to SEAICE_GRID.h fields from
507        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
508        (cubed-sphere configuration will change a little)
509      - grid computations in seaice_init are obsolete now.
510      - cleaned up code a little so that is easier to read (hopefully).
511      - added new (better?) discretizations of default advection and diffusion
512        (turn on with SEAICEuseFluxForm)
513      - replace 1 in 3d global fields by kSurface in growth.F
514      
515    checkpoint58a_post
516    o seaice:
517      - bug fix in advect.F
518    o shelfice:
519      - separate shelfice load anomaly from pload (breaks with time
520        dependent forcing), => introduce constant field shelficeLoadAnomaly.
521        Its default is 0., but it may be computed more cleverly from (unknown)
522        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
523        done offline. A good approximation of the pressure load anomaly is
524        necessary to avoid large initial adjustment processes underneath
525        deep-reaching shelfice.
526      - small fix in ISOMIP shelfice_thermodynamics
527      - add more sophisticated thermodynamics of Hellmer (1989), this is
528        now the default
529      - give a few constants more intuitive names
530    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
531      if bulk formulae are used in long integration (especially EmPmR). Turn
532      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
533      if balancePrintMean, the imbalance that is substracted is printed to
534      STDOUT.
535    o fix bug (typo) in obcs_apply_eta.F
536    o add a new package shelfice which enables us to model the circulation
537      underneath shelf-ice with draughts of hundreds of meters.
538     - works
539     - to do: + include improved thermodynamics
540              + check whether kSurfC (from model/inc/SURFACE.h) can be used
541                instead of new field kTopC
542              + can we use topoFile, Ro_surf and existing code in ini_depth.F
543                instead of new field R_shelfIce and new code in ini_depth.F
544                and ini_mask_etc.F?
545              + adjust vertical mixing schemes?
546    o seaice pkg:
547     - add a cpp-flag to include a simple formula for a salinity dependent
548       freezing point of sea water at the surface
549     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
550       meridional stresses are now different (and hopefully correct)
551    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
552       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
553       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
554    o pkg/diagnostics: add options and parameters for regional-statistics
555       diagnostics ; define regions by reading a region-mask from a file
556       (might add other options later)
557    o pkg/bulk_force:
558     - add option and parameters to use AIM surface-flux formulae.
559     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
560       others forcing fields (defined in PARM05, parameter file "data") are loaded
561       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
562     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
563     - use the right EXCH call for uwind,vwind (to work on CS-grid).
564     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
565       and parameters (note: calcWindStress replaces .NOT.readwindstress).
566     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
567    
568    checkpoint58
569    o add "--embed-source" option to genmake2 which, when the supporting
570      tools can be compiled (as determined by genmake2) will turn on the
571      embed_files package which then embeds the entire MITgcm source code
572      (*.[fFhc] + Makefile) used for the build within the executable
573      - requested by CNH but off by default
574      - adds a paltry <9MB to the mitgcmuv executable in most cases
575      - only writes the output when useEMBEDSRC in eedata is true
576    o clean up 3-dim. relaxation codes:
577      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
578      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
579      * Thanks to Tom Haine for testing!
580    
581    checkpoint57z_post
582    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
583      affects output (@ truncation level) of exp. plume_on_slope ; updated.
584    o fix the pickup behavior for obcs in combination with ptracers
585    o fix a bug in ptracers_external_fields_load
586    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
587      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
588    o transfered surface NH pressure to eta field (if exactConserv).
589  o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)  o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
590       and update lab_sea output.txt file.       and update lab_sea output.txt file.
591    o completing 3-dim. relaxation code: additional term
592         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
593      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
594      * At compile time, in "EXF_OPTIONS.h" set
595          #define  ALLOW_CLIMTEMP_RELAXATION
596          #define  ALLOW_CLIMSALT_RELAXATION
597      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
598          tauThetaClimRelax3Dim = 15552000.0,
599          tauSaltClimRelax3Dim  = 15552000.0,
600      * 3 cases:
601          1) Use a constant-in-time 3-dim. field
602          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
603          3) Real-time relax. to time-evolving prescribed field
604    o Adding Laplacian-type smoothness constraint on
605      initial and boundary (forcing) controls (ic, bc)
606      * enable at compile-time via
607        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
608      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
609      * Absolute scale somewhat unclear so far
610      * no area weighting was included since no other cost term does so far
611    
612  checkpoint57y_post  checkpoint57y_post
613  First step for a NLFS adjoint  First step for a NLFS adjoint

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