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revision 1.525 by edhill, Sat Jul 30 00:58:40 2005 UTC revision 1.611 by mlosch, Wed Feb 15 09:06:20 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      - removed all references to SEAICE_GRID.h fields from
9        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
10        (cubed-sphere configuration will change a little)
11      - grid computations in seaice_init are obsolete now.
12      - cleaned up code a little so that is easier to read (hopefully).
13      - added new (better?) discretizations of advection and diffusion
14        (still commented out)
15      
16    checkpoint58a_post
17    o shelfice:
18      - separate shelfice load anomaly from pload (breaks with time
19        dependent forcing), => introduce constant field shelficeLoadAnomaly.
20        Its default is 0., but it may be computed more cleverly from (unknown)
21        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
22        done offline. A good approximation of the pressure load anomaly is
23        necessary to avoid large initial adjustment processes underneath
24        deep-reaching shelfice.
25      - small fix in ISOMIP shelfice_thermodynamics
26      - add more sophisticated thermodynamics of Hellmer (1989), this is
27        now the default
28      - give a few constants more intuitive names
29    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
30      if bulk formulae are used in long integration (especially EmPmR). Turn
31      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
32      if balancePrintMean, the imbalance that is substracted is printed to
33      STDOUT.
34    o fix bug (typo) in obcs_apply_eta.F
35    o add a new package shelfice which enables us to model the circulation
36      underneath shelf-ice with draughts of hundreds of meters.
37     - works
38     - to do: + include improved thermodynamics
39              + check whether kSurfC (from model/inc/SURFACE.h) can be used
40                instead of new field kTopC
41              + can we use topoFile, Ro_surf and existing code in ini_depth.F
42                instead of new field R_shelfIce and new code in ini_depth.F
43                and ini_mask_etc.F?
44              + adjust vertical mixing schemes?
45    o seaice pkg:
46     - add a cpp-flag to include a simple formula for a salinity dependent
47       freezing point of sea water at the surface
48     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
49       meridional stresses are now different (and hopefully correct)
50    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
51       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
52       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
53    o pkg/diagnostics: add options and parameters for regional-statistics
54       diagnostics ; define regions by reading a region-mask from a file
55       (might add other options later)
56    o pkg/bulk_force:
57     - add option and parameters to use AIM surface-flux formulae.
58     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
59       others forcing fields (defined in PARM05, parameter file "data") are loaded
60       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
61     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
62     - use the right EXCH call for uwind,vwind (to work on CS-grid).
63     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
64       and parameters (note: calcWindStress replaces .NOT.readwindstress).
65     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
66    
67    checkpoint58
68    o add "--embed-source" option to genmake2 which, when the supporting
69      tools can be compiled (as determined by genmake2) will turn on the
70      embed_files package which then embeds the entire MITgcm source code
71      (*.[fFhc] + Makefile) used for the build within the executable
72      - requested by CNH but off by default
73      - adds a paltry <9MB to the mitgcmuv executable in most cases
74      - only writes the output when useEMBEDSRC in eedata is true
75    o clean up 3-dim. relaxation codes:
76      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
77      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
78      * Thanks to Tom Haine for testing!
79    
80    checkpoint57z_post
81    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
82      affects output (@ truncation level) of exp. plume_on_slope ; updated.
83    o fix the pickup behavior for obcs in combination with ptracers
84    o fix a bug in ptracers_external_fields_load
85    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
86      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
87    o transfered surface NH pressure to eta field (if exactConserv).
88    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
89         and update lab_sea output.txt file.
90    o completing 3-dim. relaxation code: additional term
91         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
92      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
93      * At compile time, in "EXF_OPTIONS.h" set
94          #define  ALLOW_CLIMTEMP_RELAXATION
95          #define  ALLOW_CLIMSALT_RELAXATION
96      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
97          tauThetaClimRelax3Dim = 15552000.0,
98          tauSaltClimRelax3Dim  = 15552000.0,
99      * 3 cases:
100          1) Use a constant-in-time 3-dim. field
101          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
102          3) Real-time relax. to time-evolving prescribed field
103    o Adding Laplacian-type smoothness constraint on
104      initial and boundary (forcing) controls (ic, bc)
105      * enable at compile-time via
106        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
107      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
108      * Absolute scale somewhat unclear so far
109      * no area weighting was included since no other cost term does so far
110    
111    checkpoint57y_post
112    First step for a NLFS adjoint
113    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
114    o new init. routines for calc_r_star, calc_surf_dr
115    o still need to deal with ini_masks_etc
116    o testreport seemed happy
117    checkpoint57y_pre
118    
119    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
120    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
121    o add new offset feature to offline pkg (plus minor cleanup)
122    o cfc fixes for final year of integration
123    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
124      be in GCHEM_OPTIONS).
125    
126    checkpoint57x_post
127    o fix testreport Pb in multiple test experiment.
128    o cleanup our namelist syntax in verification:
129      - make it more F95 standards compliant (some work still needed)
130      - allows the vast majority of our tests to work with gfortran
131    o Non-Hydrostatic:
132     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
133     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
134    o Allow to apply AB on T,S rather than on AB(gT,gS):
135     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
136     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
137       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
138     - need a "clever" read_pickup to restart from the other AB formulation
139    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
140    o remove some unused variables (reduces number of compiler warnings)
141    o adjoint
142      * Disable useVariableViscosity for adjoint for time being
143        (there are a number of extensive recomputations)
144      * Initialize certain variables needed for adjoint
145    
146    checkpoint57w_post
147    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
148                 fix the singleCpuIO RS version of MDSWRITEFIELD
149       and add a WARNING if using globalFiles=T with multi-processors.
150    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
151      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
152    o tracer advection scheme:
153      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
154       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
155       was not very convenient).
156      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
157       (further tests needed for the implicit DST & Flux-Limiter schemes).
158    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
159      and sRef for convenience, handy, when you want to initialize
160      ptracers in a large domain with a constant non-zero value. Also,
161      untangle ptracers_init.F a little.
162    
163    checkpoint57v_post
164    o change dome exp. to use variable viscosity in side-drag terms.
165    o remove all the files from the cfc_offline test since they are now
166      incorporated into tutorial_cfc_offline which has been producing
167      identical results for a few days of testing
168    o add new parameter: sideDragFactor to enable half-slip-side BC
169      and change side-drag S/R to use viscosity from mom_calc_visc
170      (can switch back by setting sideDragFactor=0.); affects results at
171      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
172       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
173    o vorticity & strain are now computed without masking, to account for
174      no-slip-side BC in variable viscosity calculation ; mask is applied
175      anyway later on, before computing advection/coriolis terms.
176    o modify exp4 to test new obcs support for reading from external files
177      and for passive tracers
178    o fix behavior of ptracers_monitor when monitor output is written to a
179      netcdf-file; still not independent of monitor.F (writes in the same
180      file).
181    o change default value of tRef (put a uniform, meaningful value for ocean
182      & atmos) and initialize sRef (was missing, as Martin mentioned).
183    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
184      to be proportional to enstrophy dissipation length.  Thus,
185       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
186      This is now consistent with Smagorinsky and with the manual.
187    
188    checkpoint57u_post
189    o OBCS and PTRACERS: add open boundary support for passive tracers
190      - either use homogenous (pseudo) v.Neumann conditions or prescribe
191        OB-values from file; this is not different from the way theta and salinity
192        are treated
193      - however, Orlanski-radiation conditions are not supported, and the model
194        will stop if you use pTracers and Orlanski at the same time.
195      - beefed up the rountine obcs_external_fields_load: now only those open
196        boundary values are overwritten with values from files for which there
197        are really files, otherwise the OB-fields remain untouched. This makes
198        it possible to use different OBs at different ends of the domain (as
199        with EXF)
200    o reduce number of exch calls in shap_filt (s2).
201    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
202      truncation level) 4/5 MLAdjust test results (11&12 digits match).
203    
204    checkpoint57t_post
205    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
206    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
207      same truncation, independent of the face number: affects affects several
208      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
209    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
210      note that biharmonic viscosity + no-slip was not tested in any experiment.
211    o fix bug in non-linear free-surf side-drag ; generate new output for
212      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
213    o make mnc honor the writeBinaryPrec flag for most kinds of output
214    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
215    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
216      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
217    o add brackets in multi-terms sum to get same truncation, independent of
218      the face number (manage to get exactly same value of gU,gV at the cs-edge)
219      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
220    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
221      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
222      a maximum grid-scale Reynolds number.  Also, changes all length calculations
223      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
224      Suggested values of viscosity parameters found in mom_calc_visc.
225      Many new viscosity diagnostics available.
226    
227    checkpoint57s_post
228    o Add clearing-house for viscosity calculations, mom_calc_visc and
229      correct numerous bugs in LeithD and Smagorinsky discretizations.  
230      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
231      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
232      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
233      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
234      The Strain-Tension form is now called with useStrainTensonVisc=.true.
235      ViscAhStrain and viscAhTension are now retired.
236    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
237    o In response to JMC's bug report, genmake2 now ignores any soft-links
238      that it finds in the *current* directory when searching for files.
239      Soft-links found in any other source directories will still work as
240      they did before.
241    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
242      a C routine to unlimit the stack size
243    o mnc-ify pkg/aim snapshot vars
244    o mnc-ify pkg/land as requested by Daniel
245    o various changes to mnc including:
246      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
247      - output can now be grouped so that all files within a group
248          change the ITER portion of their names in lock-step together
249      - can now read ("global") PER-FACE (in addition to PER-TILE) files
250          and works with both EXCH1 and EXCH2 (but needs more testing)
251      - writing works for all verification test cases w/ g77 on Linux
252    
253    checkpoint57r_post
254    o make MNC variable initialization happen earlier
255    o add diagnostics for (almost) each term of the momentum Eq.
256    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
257    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
258    o remove MINIMAL_TAVE_OUTPUT option ;
259      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
260    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
261      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
262    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
263    o add time-dependent SST, SSS control
264    o cost terms in ecco/ modularized (new cost_generic.F)
265    o cost_averages routines are modularized (new cost_averagesgeneric.F)
266    o new infrastructure for seaice model vs. obs misfits in seaice/
267      * driver from the_main_loop.F is seaice_cost_driver.F
268      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
269      * gradient check in Exp. 6a of natl_box_adjoint/
270    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
271      (see README file)
272    
273    checkpoint57q_post
274    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
275    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
276      - bug was reported by Jean-Michel and Ian Fenty
277    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
278      update exp. cpl_aim+ocn output.
279    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
280      Needed for high-res. runs with large global files
281      to be able to limit tapelev size
282    o Changed some tests for adjoint:
283      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
284      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
285      * global_ocean.90x40x15/ back to default 3-level checkpointing
286    o Modifications to enable scripted COMMON to MODULE conversion
287      * verification/OpenAD/code/ has necessary scripts and description;
288      * converts, compiles and runs successfully;
289    
290    checkpoint57p_post
291    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
292    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
293      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
294    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
295    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
296      (was already the case for dissipation with mom_vecinv,
297       and also the case for grad.PhiHyd when staggered-timeStep)
298      This will allow to put dissipation out-off the AB time-stepping.
299     Unfortunately, affects truncation error. Update output of exp. that "fails"
300      (cg2d matching number) and leave the others for later: front_relax(10),
301      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
302      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
303    
304    checkpoint57o_post
305  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
306    (2) its ready to be documented during the 20050801 DocFest    (2) its ready to be documented during the 20050801 DocFest
307  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
308    for ideal_2D_oce and lab_sea on linux_ia32_g77    for ideal_2D_oce and lab_sea on linux_ia32_g77
309    o set to #undef CTRL_SET_OLD_MAXCVARS_30
310      in global1x1_tot/code_seaice_adj to access indices 32, 33
311      (worth another tag)
312    
313  checkpoint57n_post  checkpoint57n_post
314  o adding precip control xx_precip 32  o adding precip control xx_precip 32

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