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revision 1.526 by heimbach, Sat Jul 30 11:47:39 2005 UTC revision 1.608 by mlosch, Fri Feb 10 10:01:03 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 shelfice:
8      - separate shelfice load anomaly from pload (breaks with time
9        dependent forcing), => introduce constant field shelficeLoadAnomaly.
10        Its default is 0., but it may be computed more cleverly from (unknown)
11        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
12        done offline. A good approximation of the pressure load anomaly is
13        necessary to avoid large initial adjustment processes underneath
14        deep-reaching shelfice.
15      - small fix in shelfice_thermodynamics
16    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
17      if bulk formulae are used in long integration (especially EmPmR). Turn
18      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
19      if balancePrintMean, the imbalance that is substracted is printed to
20      STDOUT.
21    o fix bug (typo) in obcs_apply_eta.F
22    o add a new package shelfice which enables us to model the circulation
23      underneath shelf-ice with draughts of hundreds of meters.
24     - works
25     - to do: + include improved thermodynamics
26              + check whether kSurfC (from model/inc/SURFACE.h) can be used
27                instead of new field kTopC
28              + can we use topoFile, Ro_surf and existing code in ini_depth.F
29                instead of new field R_shelfIce and new code in ini_depth.F
30                and ini_mask_etc.F?
31              + adjust vertical mixing schemes?
32    o seaice pkg:
33     - add a cpp-flag to include a simple formula for a salinity dependent
34       freezing point of sea water at the surface
35     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
36       meridional stresses are now different (and hopefully correct)
37    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
38       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
39       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
40    o pkg/diagnostics: add options and parameters for regional-statistics
41       diagnostics ; define regions by reading a region-mask from a file
42       (might add other options later)
43    o pkg/bulk_force:
44     - add option and parameters to use AIM surface-flux formulae.
45     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
46       others forcing fields (defined in PARM05, parameter file "data") are loaded
47       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
48     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
49     - use the right EXCH call for uwind,vwind (to work on CS-grid).
50     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
51       and parameters (note: calcWindStress replaces .NOT.readwindstress).
52     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
53    
54    checkpoint58
55    o add "--embed-source" option to genmake2 which, when the supporting
56      tools can be compiled (as determined by genmake2) will turn on the
57      embed_files package which then embeds the entire MITgcm source code
58      (*.[fFhc] + Makefile) used for the build within the executable
59      - requested by CNH but off by default
60      - adds a paltry <9MB to the mitgcmuv executable in most cases
61      - only writes the output when useEMBEDSRC in eedata is true
62    o clean up 3-dim. relaxation codes:
63      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
64      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
65      * Thanks to Tom Haine for testing!
66    
67    checkpoint57z_post
68    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
69      affects output (@ truncation level) of exp. plume_on_slope ; updated.
70    o fix the pickup behavior for obcs in combination with ptracers
71    o fix a bug in ptracers_external_fields_load
72    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
73      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
74    o transfered surface NH pressure to eta field (if exactConserv).
75    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
76         and update lab_sea output.txt file.
77    o completing 3-dim. relaxation code: additional term
78         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
79      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
80      * At compile time, in "EXF_OPTIONS.h" set
81          #define  ALLOW_CLIMTEMP_RELAXATION
82          #define  ALLOW_CLIMSALT_RELAXATION
83      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
84          tauThetaClimRelax3Dim = 15552000.0,
85          tauSaltClimRelax3Dim  = 15552000.0,
86      * 3 cases:
87          1) Use a constant-in-time 3-dim. field
88          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
89          3) Real-time relax. to time-evolving prescribed field
90    o Adding Laplacian-type smoothness constraint on
91      initial and boundary (forcing) controls (ic, bc)
92      * enable at compile-time via
93        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
94      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
95      * Absolute scale somewhat unclear so far
96      * no area weighting was included since no other cost term does so far
97    
98    checkpoint57y_post
99    First step for a NLFS adjoint
100    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
101    o new init. routines for calc_r_star, calc_surf_dr
102    o still need to deal with ini_masks_etc
103    o testreport seemed happy
104    checkpoint57y_pre
105    
106    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
107    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
108    o add new offset feature to offline pkg (plus minor cleanup)
109    o cfc fixes for final year of integration
110    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
111      be in GCHEM_OPTIONS).
112    
113    checkpoint57x_post
114    o fix testreport Pb in multiple test experiment.
115    o cleanup our namelist syntax in verification:
116      - make it more F95 standards compliant (some work still needed)
117      - allows the vast majority of our tests to work with gfortran
118    o Non-Hydrostatic:
119     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
120     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
121    o Allow to apply AB on T,S rather than on AB(gT,gS):
122     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
123     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
124       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
125     - need a "clever" read_pickup to restart from the other AB formulation
126    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
127    o remove some unused variables (reduces number of compiler warnings)
128    o adjoint
129      * Disable useVariableViscosity for adjoint for time being
130        (there are a number of extensive recomputations)
131      * Initialize certain variables needed for adjoint
132    
133    checkpoint57w_post
134    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
135                 fix the singleCpuIO RS version of MDSWRITEFIELD
136       and add a WARNING if using globalFiles=T with multi-processors.
137    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
138      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
139    o tracer advection scheme:
140      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
141       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
142       was not very convenient).
143      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
144       (further tests needed for the implicit DST & Flux-Limiter schemes).
145    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
146      and sRef for convenience, handy, when you want to initialize
147      ptracers in a large domain with a constant non-zero value. Also,
148      untangle ptracers_init.F a little.
149    
150    checkpoint57v_post
151    o change dome exp. to use variable viscosity in side-drag terms.
152    o remove all the files from the cfc_offline test since they are now
153      incorporated into tutorial_cfc_offline which has been producing
154      identical results for a few days of testing
155    o add new parameter: sideDragFactor to enable half-slip-side BC
156      and change side-drag S/R to use viscosity from mom_calc_visc
157      (can switch back by setting sideDragFactor=0.); affects results at
158      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
159       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
160    o vorticity & strain are now computed without masking, to account for
161      no-slip-side BC in variable viscosity calculation ; mask is applied
162      anyway later on, before computing advection/coriolis terms.
163    o modify exp4 to test new obcs support for reading from external files
164      and for passive tracers
165    o fix behavior of ptracers_monitor when monitor output is written to a
166      netcdf-file; still not independent of monitor.F (writes in the same
167      file).
168    o change default value of tRef (put a uniform, meaningful value for ocean
169      & atmos) and initialize sRef (was missing, as Martin mentioned).
170    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
171      to be proportional to enstrophy dissipation length.  Thus,
172       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
173      This is now consistent with Smagorinsky and with the manual.
174    
175    checkpoint57u_post
176    o OBCS and PTRACERS: add open boundary support for passive tracers
177      - either use homogenous (pseudo) v.Neumann conditions or prescribe
178        OB-values from file; this is not different from the way theta and salinity
179        are treated
180      - however, Orlanski-radiation conditions are not supported, and the model
181        will stop if you use pTracers and Orlanski at the same time.
182      - beefed up the rountine obcs_external_fields_load: now only those open
183        boundary values are overwritten with values from files for which there
184        are really files, otherwise the OB-fields remain untouched. This makes
185        it possible to use different OBs at different ends of the domain (as
186        with EXF)
187    o reduce number of exch calls in shap_filt (s2).
188    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
189      truncation level) 4/5 MLAdjust test results (11&12 digits match).
190    
191    checkpoint57t_post
192    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
193    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
194      same truncation, independent of the face number: affects affects several
195      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
196    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
197      note that biharmonic viscosity + no-slip was not tested in any experiment.
198    o fix bug in non-linear free-surf side-drag ; generate new output for
199      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
200    o make mnc honor the writeBinaryPrec flag for most kinds of output
201    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
202    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
203      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
204    o add brackets in multi-terms sum to get same truncation, independent of
205      the face number (manage to get exactly same value of gU,gV at the cs-edge)
206      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
207    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
208      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
209      a maximum grid-scale Reynolds number.  Also, changes all length calculations
210      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
211      Suggested values of viscosity parameters found in mom_calc_visc.
212      Many new viscosity diagnostics available.
213    
214    checkpoint57s_post
215    o Add clearing-house for viscosity calculations, mom_calc_visc and
216      correct numerous bugs in LeithD and Smagorinsky discretizations.  
217      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
218      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
219      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
220      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
221      The Strain-Tension form is now called with useStrainTensonVisc=.true.
222      ViscAhStrain and viscAhTension are now retired.
223    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
224    o In response to JMC's bug report, genmake2 now ignores any soft-links
225      that it finds in the *current* directory when searching for files.
226      Soft-links found in any other source directories will still work as
227      they did before.
228    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
229      a C routine to unlimit the stack size
230    o mnc-ify pkg/aim snapshot vars
231    o mnc-ify pkg/land as requested by Daniel
232    o various changes to mnc including:
233      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
234      - output can now be grouped so that all files within a group
235          change the ITER portion of their names in lock-step together
236      - can now read ("global") PER-FACE (in addition to PER-TILE) files
237          and works with both EXCH1 and EXCH2 (but needs more testing)
238      - writing works for all verification test cases w/ g77 on Linux
239    
240    checkpoint57r_post
241    o make MNC variable initialization happen earlier
242    o add diagnostics for (almost) each term of the momentum Eq.
243    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
244    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
245    o remove MINIMAL_TAVE_OUTPUT option ;
246      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
247    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
248      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
249    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
250    o add time-dependent SST, SSS control
251    o cost terms in ecco/ modularized (new cost_generic.F)
252    o cost_averages routines are modularized (new cost_averagesgeneric.F)
253    o new infrastructure for seaice model vs. obs misfits in seaice/
254      * driver from the_main_loop.F is seaice_cost_driver.F
255      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
256      * gradient check in Exp. 6a of natl_box_adjoint/
257    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
258      (see README file)
259    
260    checkpoint57q_post
261    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
262    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
263      - bug was reported by Jean-Michel and Ian Fenty
264    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
265      update exp. cpl_aim+ocn output.
266    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
267      Needed for high-res. runs with large global files
268      to be able to limit tapelev size
269    o Changed some tests for adjoint:
270      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
271      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
272      * global_ocean.90x40x15/ back to default 3-level checkpointing
273    o Modifications to enable scripted COMMON to MODULE conversion
274      * verification/OpenAD/code/ has necessary scripts and description;
275      * converts, compiles and runs successfully;
276    
277    checkpoint57p_post
278    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
279    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
280      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
281    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
282    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
283      (was already the case for dissipation with mom_vecinv,
284       and also the case for grad.PhiHyd when staggered-timeStep)
285      This will allow to put dissipation out-off the AB time-stepping.
286     Unfortunately, affects truncation error. Update output of exp. that "fails"
287      (cg2d matching number) and leave the others for later: front_relax(10),
288      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
289      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
290    
291  checkpoint57o_post  checkpoint57o_post
292  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
293    (2) its ready to be documented during the 20050801 DocFest    (2) its ready to be documented during the 20050801 DocFest

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