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revision 1.525 by edhill, Sat Jul 30 00:58:40 2005 UTC revision 1.626 by edhill, Fri Mar 10 05:50:22 2006 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o various mnc cleanups and improvements:
8      + shrink lookup tables by factor of ~4
9      + better error reporting when running out of lookup space
10      + able to handle longer path/file names (up to 500 chars)
11    o adjoint:
12      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
13      - TBD: "hidden" mom_vecinv recomp. in dynamics
14    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
15     (allow to differentiate between forcing components using new integer flags:
16      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
17     and add new flag to put Dissipation tendency out of Adams-Bashforth.
18    o ecco
19      - enable trend removal from SSH anomaly obs.
20    o adjoint
21      - a fix for PmEpR when #undef EXACT_CONSERV
22      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
23      - try to fix "hidden" recomp. in forward_step for NLFS
24        (NLFS seems broken sometimes after I checked it in)
25    o seaice:
26     - add c-grid version of the dynamic solver:
27       + three new routines that are the c-grid substitute lsr, dynsolver
28         and ostres
29       + put a few fields that were local to dynsolver into global common
30         blocks, so that I can move the computation of stresses etc into
31         seaice_lsr (saves coding but may break the adjoint).
32     - replace more hardwired parameters by runtime parameters
33     - add ice masks that mask the rhs of the implicit solvers where there
34       is no ice (commented out in seaice_dynsolver, because i am not sure
35       if this works properly), eventually this should replace the clipping
36       of ice velocities in seaice_dynsolver to +/-40cm/s.
37    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
38      include it only where its needed
39    o move balancing of fluxes before the call of external_forcing_surf
40    o seaice:
41      - correct units of turning angles (now they are really in degrees)
42      - move computation of GWATX/Y out of main routine into dynsolver
43      - initialize GWATX/Y in seaice_init
44    o Apply mask on Fresh-Water flux (needed for SSH forcing).
45      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
46    o seaice: add runtime flags for turning angles (default to zero)
47    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
48      and trend from exf forcing and ctrl control adjustments
49    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
50      (since checkpoint57x_post)
51    o change the default rotation period to 86164.s = the Earth rotation
52    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
53      and based on a reference stratification. Tested within hs94.cs-32x32x5.
54    o seaice advection: add code for choosing between the default (2nd order
55      central differences) and multiDim advection schemes provided by
56      pkg/generic_advdiff
57    o seaice:
58      - removed all references to SEAICE_GRID.h fields from
59        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
60        (cubed-sphere configuration will change a little)
61      - grid computations in seaice_init are obsolete now.
62      - cleaned up code a little so that is easier to read (hopefully).
63      - added new (better?) discretizations of default advection and diffusion
64        (turn on with SEAICEuseFluxForm)
65      - replace 1 in 3d global fields by kSurface in growth.F
66      
67    checkpoint58a_post
68    o seaice:
69      - bug fix in advect.F
70    o shelfice:
71      - separate shelfice load anomaly from pload (breaks with time
72        dependent forcing), => introduce constant field shelficeLoadAnomaly.
73        Its default is 0., but it may be computed more cleverly from (unknown)
74        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
75        done offline. A good approximation of the pressure load anomaly is
76        necessary to avoid large initial adjustment processes underneath
77        deep-reaching shelfice.
78      - small fix in ISOMIP shelfice_thermodynamics
79      - add more sophisticated thermodynamics of Hellmer (1989), this is
80        now the default
81      - give a few constants more intuitive names
82    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
83      if bulk formulae are used in long integration (especially EmPmR). Turn
84      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
85      if balancePrintMean, the imbalance that is substracted is printed to
86      STDOUT.
87    o fix bug (typo) in obcs_apply_eta.F
88    o add a new package shelfice which enables us to model the circulation
89      underneath shelf-ice with draughts of hundreds of meters.
90     - works
91     - to do: + include improved thermodynamics
92              + check whether kSurfC (from model/inc/SURFACE.h) can be used
93                instead of new field kTopC
94              + can we use topoFile, Ro_surf and existing code in ini_depth.F
95                instead of new field R_shelfIce and new code in ini_depth.F
96                and ini_mask_etc.F?
97              + adjust vertical mixing schemes?
98    o seaice pkg:
99     - add a cpp-flag to include a simple formula for a salinity dependent
100       freezing point of sea water at the surface
101     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
102       meridional stresses are now different (and hopefully correct)
103    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
104       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
105       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
106    o pkg/diagnostics: add options and parameters for regional-statistics
107       diagnostics ; define regions by reading a region-mask from a file
108       (might add other options later)
109    o pkg/bulk_force:
110     - add option and parameters to use AIM surface-flux formulae.
111     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
112       others forcing fields (defined in PARM05, parameter file "data") are loaded
113       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
114     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
115     - use the right EXCH call for uwind,vwind (to work on CS-grid).
116     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
117       and parameters (note: calcWindStress replaces .NOT.readwindstress).
118     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
119    
120    checkpoint58
121    o add "--embed-source" option to genmake2 which, when the supporting
122      tools can be compiled (as determined by genmake2) will turn on the
123      embed_files package which then embeds the entire MITgcm source code
124      (*.[fFhc] + Makefile) used for the build within the executable
125      - requested by CNH but off by default
126      - adds a paltry <9MB to the mitgcmuv executable in most cases
127      - only writes the output when useEMBEDSRC in eedata is true
128    o clean up 3-dim. relaxation codes:
129      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
130      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
131      * Thanks to Tom Haine for testing!
132    
133    checkpoint57z_post
134    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
135      affects output (@ truncation level) of exp. plume_on_slope ; updated.
136    o fix the pickup behavior for obcs in combination with ptracers
137    o fix a bug in ptracers_external_fields_load
138    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
139      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
140    o transfered surface NH pressure to eta field (if exactConserv).
141    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
142         and update lab_sea output.txt file.
143    o completing 3-dim. relaxation code: additional term
144         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
145      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
146      * At compile time, in "EXF_OPTIONS.h" set
147          #define  ALLOW_CLIMTEMP_RELAXATION
148          #define  ALLOW_CLIMSALT_RELAXATION
149      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
150          tauThetaClimRelax3Dim = 15552000.0,
151          tauSaltClimRelax3Dim  = 15552000.0,
152      * 3 cases:
153          1) Use a constant-in-time 3-dim. field
154          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
155          3) Real-time relax. to time-evolving prescribed field
156    o Adding Laplacian-type smoothness constraint on
157      initial and boundary (forcing) controls (ic, bc)
158      * enable at compile-time via
159        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
160      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
161      * Absolute scale somewhat unclear so far
162      * no area weighting was included since no other cost term does so far
163    
164    checkpoint57y_post
165    First step for a NLFS adjoint
166    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
167    o new init. routines for calc_r_star, calc_surf_dr
168    o still need to deal with ini_masks_etc
169    o testreport seemed happy
170    checkpoint57y_pre
171    
172    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
173    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
174    o add new offset feature to offline pkg (plus minor cleanup)
175    o cfc fixes for final year of integration
176    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
177      be in GCHEM_OPTIONS).
178    
179    checkpoint57x_post
180    o fix testreport Pb in multiple test experiment.
181    o cleanup our namelist syntax in verification:
182      - make it more F95 standards compliant (some work still needed)
183      - allows the vast majority of our tests to work with gfortran
184    o Non-Hydrostatic:
185     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
186     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
187    o Allow to apply AB on T,S rather than on AB(gT,gS):
188     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
189     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
190       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
191     - need a "clever" read_pickup to restart from the other AB formulation
192    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
193    o remove some unused variables (reduces number of compiler warnings)
194    o adjoint
195      * Disable useVariableViscosity for adjoint for time being
196        (there are a number of extensive recomputations)
197      * Initialize certain variables needed for adjoint
198    
199    checkpoint57w_post
200    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
201                 fix the singleCpuIO RS version of MDSWRITEFIELD
202       and add a WARNING if using globalFiles=T with multi-processors.
203    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
204      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
205    o tracer advection scheme:
206      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
207       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
208       was not very convenient).
209      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
210       (further tests needed for the implicit DST & Flux-Limiter schemes).
211    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
212      and sRef for convenience, handy, when you want to initialize
213      ptracers in a large domain with a constant non-zero value. Also,
214      untangle ptracers_init.F a little.
215    
216    checkpoint57v_post
217    o change dome exp. to use variable viscosity in side-drag terms.
218    o remove all the files from the cfc_offline test since they are now
219      incorporated into tutorial_cfc_offline which has been producing
220      identical results for a few days of testing
221    o add new parameter: sideDragFactor to enable half-slip-side BC
222      and change side-drag S/R to use viscosity from mom_calc_visc
223      (can switch back by setting sideDragFactor=0.); affects results at
224      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
225       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
226    o vorticity & strain are now computed without masking, to account for
227      no-slip-side BC in variable viscosity calculation ; mask is applied
228      anyway later on, before computing advection/coriolis terms.
229    o modify exp4 to test new obcs support for reading from external files
230      and for passive tracers
231    o fix behavior of ptracers_monitor when monitor output is written to a
232      netcdf-file; still not independent of monitor.F (writes in the same
233      file).
234    o change default value of tRef (put a uniform, meaningful value for ocean
235      & atmos) and initialize sRef (was missing, as Martin mentioned).
236    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
237      to be proportional to enstrophy dissipation length.  Thus,
238       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
239      This is now consistent with Smagorinsky and with the manual.
240    
241    checkpoint57u_post
242    o OBCS and PTRACERS: add open boundary support for passive tracers
243      - either use homogenous (pseudo) v.Neumann conditions or prescribe
244        OB-values from file; this is not different from the way theta and salinity
245        are treated
246      - however, Orlanski-radiation conditions are not supported, and the model
247        will stop if you use pTracers and Orlanski at the same time.
248      - beefed up the rountine obcs_external_fields_load: now only those open
249        boundary values are overwritten with values from files for which there
250        are really files, otherwise the OB-fields remain untouched. This makes
251        it possible to use different OBs at different ends of the domain (as
252        with EXF)
253    o reduce number of exch calls in shap_filt (s2).
254    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
255      truncation level) 4/5 MLAdjust test results (11&12 digits match).
256    
257    checkpoint57t_post
258    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
259    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
260      same truncation, independent of the face number: affects affects several
261      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
262    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
263      note that biharmonic viscosity + no-slip was not tested in any experiment.
264    o fix bug in non-linear free-surf side-drag ; generate new output for
265      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
266    o make mnc honor the writeBinaryPrec flag for most kinds of output
267    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
268    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
269      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
270    o add brackets in multi-terms sum to get same truncation, independent of
271      the face number (manage to get exactly same value of gU,gV at the cs-edge)
272      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
273    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
274      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
275      a maximum grid-scale Reynolds number.  Also, changes all length calculations
276      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
277      Suggested values of viscosity parameters found in mom_calc_visc.
278      Many new viscosity diagnostics available.
279    
280    checkpoint57s_post
281    o Add clearing-house for viscosity calculations, mom_calc_visc and
282      correct numerous bugs in LeithD and Smagorinsky discretizations.  
283      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
284      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
285      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
286      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
287      The Strain-Tension form is now called with useStrainTensonVisc=.true.
288      ViscAhStrain and viscAhTension are now retired.
289    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
290    o In response to JMC's bug report, genmake2 now ignores any soft-links
291      that it finds in the *current* directory when searching for files.
292      Soft-links found in any other source directories will still work as
293      they did before.
294    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
295      a C routine to unlimit the stack size
296    o mnc-ify pkg/aim snapshot vars
297    o mnc-ify pkg/land as requested by Daniel
298    o various changes to mnc including:
299      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
300      - output can now be grouped so that all files within a group
301          change the ITER portion of their names in lock-step together
302      - can now read ("global") PER-FACE (in addition to PER-TILE) files
303          and works with both EXCH1 and EXCH2 (but needs more testing)
304      - writing works for all verification test cases w/ g77 on Linux
305    
306    checkpoint57r_post
307    o make MNC variable initialization happen earlier
308    o add diagnostics for (almost) each term of the momentum Eq.
309    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
310    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
311    o remove MINIMAL_TAVE_OUTPUT option ;
312      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
313    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
314      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
315    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
316    o add time-dependent SST, SSS control
317    o cost terms in ecco/ modularized (new cost_generic.F)
318    o cost_averages routines are modularized (new cost_averagesgeneric.F)
319    o new infrastructure for seaice model vs. obs misfits in seaice/
320      * driver from the_main_loop.F is seaice_cost_driver.F
321      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
322      * gradient check in Exp. 6a of natl_box_adjoint/
323    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
324      (see README file)
325    
326    checkpoint57q_post
327    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
328    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
329      - bug was reported by Jean-Michel and Ian Fenty
330    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
331      update exp. cpl_aim+ocn output.
332    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
333      Needed for high-res. runs with large global files
334      to be able to limit tapelev size
335    o Changed some tests for adjoint:
336      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
337      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
338      * global_ocean.90x40x15/ back to default 3-level checkpointing
339    o Modifications to enable scripted COMMON to MODULE conversion
340      * verification/OpenAD/code/ has necessary scripts and description;
341      * converts, compiles and runs successfully;
342    
343    checkpoint57p_post
344    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
345    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
346      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
347    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
348    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
349      (was already the case for dissipation with mom_vecinv,
350       and also the case for grad.PhiHyd when staggered-timeStep)
351      This will allow to put dissipation out-off the AB time-stepping.
352     Unfortunately, affects truncation error. Update output of exp. that "fails"
353      (cg2d matching number) and leave the others for later: front_relax(10),
354      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
355      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
356    
357    checkpoint57o_post
358  o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and  o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
359    (2) its ready to be documented during the 20050801 DocFest    (2) its ready to be documented during the 20050801 DocFest
360  o MNC-ify the gmredi package -- tested and works w/ and w/o mnc  o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
361    for ideal_2D_oce and lab_sea on linux_ia32_g77    for ideal_2D_oce and lab_sea on linux_ia32_g77
362    o set to #undef CTRL_SET_OLD_MAXCVARS_30
363      in global1x1_tot/code_seaice_adj to access indices 32, 33
364      (worth another tag)
365    
366  checkpoint57n_post  checkpoint57n_post
367  o adding precip control xx_precip 32  o adding precip control xx_precip 32

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