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revision 1.525 by edhill, Sat Jul 30 00:58:40 2005 UTC revision 1.630 by mlosch, Wed Mar 15 13:06:14 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 seaice:
8      - modify advection so that it works also on the C-grid
9      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
10        problem in multi-tile runs with C-grid
11      - remove velocity clipping from seaice_dynsolver with C-grid
12    
13    checkpoint58b_post
14    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
15      update output.txt of exp. aim.5l_cs.thSI
16    o various mnc cleanups and improvements:
17      + shrink lookup tables by factor of ~4
18      + better error reporting when running out of lookup space
19      + able to handle longer path/file names (up to 500 chars)
20    o adjoint:
21      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
22      - TBD: "hidden" mom_vecinv recomp. in dynamics
23    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
24     (allow to differentiate between forcing components using new integer flags:
25      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
26     and add new flag to put Dissipation tendency out of Adams-Bashforth.
27    o ecco
28      - enable trend removal from SSH anomaly obs.
29    o adjoint
30      - a fix for PmEpR when #undef EXACT_CONSERV
31      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
32      - try to fix "hidden" recomp. in forward_step for NLFS
33        (NLFS seems broken sometimes after I checked it in)
34    o seaice:
35     - add c-grid version of the dynamic solver:
36       + three new routines that are the c-grid substitute lsr, dynsolver
37         and ostres
38       + put a few fields that were local to dynsolver into global common
39         blocks, so that I can move the computation of stresses etc into
40         seaice_lsr (saves coding but may break the adjoint).
41     - replace more hardwired parameters by runtime parameters
42     - add ice masks that mask the rhs of the implicit solvers where there
43       is no ice (commented out in seaice_dynsolver, because i am not sure
44       if this works properly), eventually this should replace the clipping
45       of ice velocities in seaice_dynsolver to +/-40cm/s.
46    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
47      include it only where its needed
48    o move balancing of fluxes before the call of external_forcing_surf
49    o seaice:
50      - correct units of turning angles (now they are really in degrees)
51      - move computation of GWATX/Y out of main routine into dynsolver
52      - initialize GWATX/Y in seaice_init
53    o Apply mask on Fresh-Water flux (needed for SSH forcing).
54      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
55    o seaice: add runtime flags for turning angles (default to zero)
56    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
57      and trend from exf forcing and ctrl control adjustments
58    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
59      (since checkpoint57x_post)
60    o change the default rotation period to 86164.s = the Earth rotation
61    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
62      and based on a reference stratification. Tested within hs94.cs-32x32x5.
63    o seaice advection: add code for choosing between the default (2nd order
64      central differences) and multiDim advection schemes provided by
65      pkg/generic_advdiff
66    o seaice:
67      - removed all references to SEAICE_GRID.h fields from
68        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
69        (cubed-sphere configuration will change a little)
70      - grid computations in seaice_init are obsolete now.
71      - cleaned up code a little so that is easier to read (hopefully).
72      - added new (better?) discretizations of default advection and diffusion
73        (turn on with SEAICEuseFluxForm)
74      - replace 1 in 3d global fields by kSurface in growth.F
75      
76    checkpoint58a_post
77    o seaice:
78      - bug fix in advect.F
79    o shelfice:
80      - separate shelfice load anomaly from pload (breaks with time
81        dependent forcing), => introduce constant field shelficeLoadAnomaly.
82        Its default is 0., but it may be computed more cleverly from (unknown)
83        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
84        done offline. A good approximation of the pressure load anomaly is
85        necessary to avoid large initial adjustment processes underneath
86        deep-reaching shelfice.
87      - small fix in ISOMIP shelfice_thermodynamics
88      - add more sophisticated thermodynamics of Hellmer (1989), this is
89        now the default
90      - give a few constants more intuitive names
91    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
92      if bulk formulae are used in long integration (especially EmPmR). Turn
93      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
94      if balancePrintMean, the imbalance that is substracted is printed to
95      STDOUT.
96    o fix bug (typo) in obcs_apply_eta.F
97    o add a new package shelfice which enables us to model the circulation
98      underneath shelf-ice with draughts of hundreds of meters.
99     - works
100     - to do: + include improved thermodynamics
101              + check whether kSurfC (from model/inc/SURFACE.h) can be used
102                instead of new field kTopC
103              + can we use topoFile, Ro_surf and existing code in ini_depth.F
104                instead of new field R_shelfIce and new code in ini_depth.F
105                and ini_mask_etc.F?
106              + adjust vertical mixing schemes?
107    o seaice pkg:
108     - add a cpp-flag to include a simple formula for a salinity dependent
109       freezing point of sea water at the surface
110     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
111       meridional stresses are now different (and hopefully correct)
112    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
113       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
114       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
115    o pkg/diagnostics: add options and parameters for regional-statistics
116       diagnostics ; define regions by reading a region-mask from a file
117       (might add other options later)
118    o pkg/bulk_force:
119     - add option and parameters to use AIM surface-flux formulae.
120     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
121       others forcing fields (defined in PARM05, parameter file "data") are loaded
122       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
123     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
124     - use the right EXCH call for uwind,vwind (to work on CS-grid).
125     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
126       and parameters (note: calcWindStress replaces .NOT.readwindstress).
127     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
128    
129    checkpoint58
130    o add "--embed-source" option to genmake2 which, when the supporting
131      tools can be compiled (as determined by genmake2) will turn on the
132      embed_files package which then embeds the entire MITgcm source code
133      (*.[fFhc] + Makefile) used for the build within the executable
134      - requested by CNH but off by default
135      - adds a paltry <9MB to the mitgcmuv executable in most cases
136      - only writes the output when useEMBEDSRC in eedata is true
137    o clean up 3-dim. relaxation codes:
138      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
139      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
140      * Thanks to Tom Haine for testing!
141    
142    checkpoint57z_post
143    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
144      affects output (@ truncation level) of exp. plume_on_slope ; updated.
145    o fix the pickup behavior for obcs in combination with ptracers
146    o fix a bug in ptracers_external_fields_load
147    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
148      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
149    o transfered surface NH pressure to eta field (if exactConserv).
150    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
151         and update lab_sea output.txt file.
152    o completing 3-dim. relaxation code: additional term
153         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
154      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
155      * At compile time, in "EXF_OPTIONS.h" set
156          #define  ALLOW_CLIMTEMP_RELAXATION
157          #define  ALLOW_CLIMSALT_RELAXATION
158      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
159          tauThetaClimRelax3Dim = 15552000.0,
160          tauSaltClimRelax3Dim  = 15552000.0,
161      * 3 cases:
162          1) Use a constant-in-time 3-dim. field
163          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
164          3) Real-time relax. to time-evolving prescribed field
165    o Adding Laplacian-type smoothness constraint on
166      initial and boundary (forcing) controls (ic, bc)
167      * enable at compile-time via
168        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
169      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
170      * Absolute scale somewhat unclear so far
171      * no area weighting was included since no other cost term does so far
172    
173    checkpoint57y_post
174    First step for a NLFS adjoint
175    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
176    o new init. routines for calc_r_star, calc_surf_dr
177    o still need to deal with ini_masks_etc
178    o testreport seemed happy
179    checkpoint57y_pre
180    
181    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
182    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
183    o add new offset feature to offline pkg (plus minor cleanup)
184    o cfc fixes for final year of integration
185    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
186      be in GCHEM_OPTIONS).
187    
188    checkpoint57x_post
189    o fix testreport Pb in multiple test experiment.
190    o cleanup our namelist syntax in verification:
191      - make it more F95 standards compliant (some work still needed)
192      - allows the vast majority of our tests to work with gfortran
193    o Non-Hydrostatic:
194     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
195     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
196    o Allow to apply AB on T,S rather than on AB(gT,gS):
197     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
198     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
199       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
200     - need a "clever" read_pickup to restart from the other AB formulation
201    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
202    o remove some unused variables (reduces number of compiler warnings)
203    o adjoint
204      * Disable useVariableViscosity for adjoint for time being
205        (there are a number of extensive recomputations)
206      * Initialize certain variables needed for adjoint
207    
208    checkpoint57w_post
209    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
210                 fix the singleCpuIO RS version of MDSWRITEFIELD
211       and add a WARNING if using globalFiles=T with multi-processors.
212    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
213      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
214    o tracer advection scheme:
215      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
216       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
217       was not very convenient).
218      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
219       (further tests needed for the implicit DST & Flux-Limiter schemes).
220    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
221      and sRef for convenience, handy, when you want to initialize
222      ptracers in a large domain with a constant non-zero value. Also,
223      untangle ptracers_init.F a little.
224    
225    checkpoint57v_post
226    o change dome exp. to use variable viscosity in side-drag terms.
227    o remove all the files from the cfc_offline test since they are now
228      incorporated into tutorial_cfc_offline which has been producing
229      identical results for a few days of testing
230    o add new parameter: sideDragFactor to enable half-slip-side BC
231      and change side-drag S/R to use viscosity from mom_calc_visc
232      (can switch back by setting sideDragFactor=0.); affects results at
233      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
234       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
235    o vorticity & strain are now computed without masking, to account for
236      no-slip-side BC in variable viscosity calculation ; mask is applied
237      anyway later on, before computing advection/coriolis terms.
238    o modify exp4 to test new obcs support for reading from external files
239      and for passive tracers
240    o fix behavior of ptracers_monitor when monitor output is written to a
241      netcdf-file; still not independent of monitor.F (writes in the same
242      file).
243    o change default value of tRef (put a uniform, meaningful value for ocean
244      & atmos) and initialize sRef (was missing, as Martin mentioned).
245    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
246      to be proportional to enstrophy dissipation length.  Thus,
247       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
248      This is now consistent with Smagorinsky and with the manual.
249    
250    checkpoint57u_post
251    o OBCS and PTRACERS: add open boundary support for passive tracers
252      - either use homogenous (pseudo) v.Neumann conditions or prescribe
253        OB-values from file; this is not different from the way theta and salinity
254        are treated
255      - however, Orlanski-radiation conditions are not supported, and the model
256        will stop if you use pTracers and Orlanski at the same time.
257      - beefed up the rountine obcs_external_fields_load: now only those open
258        boundary values are overwritten with values from files for which there
259        are really files, otherwise the OB-fields remain untouched. This makes
260        it possible to use different OBs at different ends of the domain (as
261        with EXF)
262    o reduce number of exch calls in shap_filt (s2).
263    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
264      truncation level) 4/5 MLAdjust test results (11&12 digits match).
265    
266    checkpoint57t_post
267    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
268    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
269      same truncation, independent of the face number: affects affects several
270      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
271    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
272      note that biharmonic viscosity + no-slip was not tested in any experiment.
273    o fix bug in non-linear free-surf side-drag ; generate new output for
274      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
275    o make mnc honor the writeBinaryPrec flag for most kinds of output
276    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
277    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
278      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
279    o add brackets in multi-terms sum to get same truncation, independent of
280      the face number (manage to get exactly same value of gU,gV at the cs-edge)
281      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
282    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
283      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
284      a maximum grid-scale Reynolds number.  Also, changes all length calculations
285      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
286      Suggested values of viscosity parameters found in mom_calc_visc.
287      Many new viscosity diagnostics available.
288    
289    checkpoint57s_post
290    o Add clearing-house for viscosity calculations, mom_calc_visc and
291      correct numerous bugs in LeithD and Smagorinsky discretizations.  
292      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
293      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
294      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
295      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
296      The Strain-Tension form is now called with useStrainTensonVisc=.true.
297      ViscAhStrain and viscAhTension are now retired.
298    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
299    o In response to JMC's bug report, genmake2 now ignores any soft-links
300      that it finds in the *current* directory when searching for files.
301      Soft-links found in any other source directories will still work as
302      they did before.
303    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
304      a C routine to unlimit the stack size
305    o mnc-ify pkg/aim snapshot vars
306    o mnc-ify pkg/land as requested by Daniel
307    o various changes to mnc including:
308      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
309      - output can now be grouped so that all files within a group
310          change the ITER portion of their names in lock-step together
311      - can now read ("global") PER-FACE (in addition to PER-TILE) files
312          and works with both EXCH1 and EXCH2 (but needs more testing)
313      - writing works for all verification test cases w/ g77 on Linux
314    
315    checkpoint57r_post
316    o make MNC variable initialization happen earlier
317    o add diagnostics for (almost) each term of the momentum Eq.
318    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
319    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
320    o remove MINIMAL_TAVE_OUTPUT option ;
321      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
322    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
323      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
324    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
325    o add time-dependent SST, SSS control
326    o cost terms in ecco/ modularized (new cost_generic.F)
327    o cost_averages routines are modularized (new cost_averagesgeneric.F)
328    o new infrastructure for seaice model vs. obs misfits in seaice/
329      * driver from the_main_loop.F is seaice_cost_driver.F
330      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
331      * gradient check in Exp. 6a of natl_box_adjoint/
332    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
333      (see README file)
334    
335    checkpoint57q_post
336    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
337    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
338      - bug was reported by Jean-Michel and Ian Fenty
339    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
340      update exp. cpl_aim+ocn output.
341    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
342      Needed for high-res. runs with large global files
343      to be able to limit tapelev size
344    o Changed some tests for adjoint:
345      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
346      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
347      * global_ocean.90x40x15/ back to default 3-level checkpointing
348    o Modifications to enable scripted COMMON to MODULE conversion
349      * verification/OpenAD/code/ has necessary scripts and description;
350      * converts, compiles and runs successfully;
351    
352    checkpoint57p_post
353    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
354    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
355      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
356    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
357    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
358      (was already the case for dissipation with mom_vecinv,
359       and also the case for grad.PhiHyd when staggered-timeStep)
360      This will allow to put dissipation out-off the AB time-stepping.
361     Unfortunately, affects truncation error. Update output of exp. that "fails"
362      (cg2d matching number) and leave the others for later: front_relax(10),
363      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
364      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
365    
366    checkpoint57o_post
367  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
368    (2) its ready to be documented during the 20050801 DocFest    (2) its ready to be documented during the 20050801 DocFest
369  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
370    for ideal_2D_oce and lab_sea on linux_ia32_g77    for ideal_2D_oce and lab_sea on linux_ia32_g77
371    o set to #undef CTRL_SET_OLD_MAXCVARS_30
372      in global1x1_tot/code_seaice_adj to access indices 32, 33
373      (worth another tag)
374    
375  checkpoint57n_post  checkpoint57n_post
376  o adding precip control xx_precip 32  o adding precip control xx_precip 32

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