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revision 1.526 by heimbach, Sat Jul 30 11:47:39 2005 UTC revision 1.579 by jmc, Sun Nov 6 23:04:38 2005 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o Allow to apply AB on T,S rather than on AB(gT,gS):
8     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
9     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
10       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
11     - need a "clever" read_pickup to restart from the other AB formulation
12    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
13    o remove some unused variables (reduces number of compiler warnings)
14    
15    checkpoint57w_post
16    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
17                 fix the singleCpuIO RS version of MDSWRITEFIELD
18       and add a WARNING if using globalFiles=T with multi-processors.
19    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
20      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
21    o tracer advection scheme:
22      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
23       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
24       was not very convenient).
25      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
26       (further tests needed for the implicit DST & Flux-Limiter schemes).
27    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
28      and sRef for convenience, handy, when you want to initialize
29      ptracers in a large domain with a constant non-zero value. Also,
30      untangle ptracers_init.F a little.
31    
32    checkpoint57v_post
33    o change dome exp. to use variable viscosity in side-drag terms.
34    o remove all the files from the cfc_offline test since they are now
35      incorporated into tutorial_cfc_offline which has been producing
36      identical results for a few days of testing
37    o add new parameter: sideDragFactor to enable half-slip-side BC
38      and change side-drag S/R to use viscosity from mom_calc_visc
39      (can switch back by setting sideDragFactor=0.); affects results at
40      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
41       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
42    o vorticity & strain are now computed without masking, to account for
43      no-slip-side BC in variable viscosity calculation ; mask is applied
44      anyway later on, before computing advection/coriolis terms.
45    o modify exp4 to test new obcs support for reading from external files
46      and for passive tracers
47    o fix behavior of ptracers_monitor when monitor output is written to a
48      netcdf-file; still not independent of monitor.F (writes in the same
49      file).
50    o change default value of tRef (put a uniform, meaningful value for ocean
51      & atmos) and initialize sRef (was missing, as Martin mentioned).
52    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
53      to be proportional to enstrophy dissipation length.  Thus,
54       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
55      This is now consistent with Smagorinsky and with the manual.
56    
57    checkpoint57u_post
58    o OBCS and PTRACERS: add open boundary support for passive tracers
59      - either use homogenous (pseudo) v.Neumann conditions or prescribe
60        OB-values from file; this is not different from the way theta and salinity
61        are treated
62      - however, Orlanski-radiation conditions are not supported, and the model
63        will stop if you use pTracers and Orlanski at the same time.
64      - beefed up the rountine obcs_external_fields_load: now only those open
65        boundary values are overwritten with values from files for which there
66        are really files, otherwise the OB-fields remain untouched. This makes
67        it possible to use different OBs at different ends of the domain (as
68        with EXF)
69    o reduce number of exch calls in shap_filt (s2).
70    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
71      truncation level) 4/5 MLAdjust test results (11&12 digits match).
72    
73    checkpoint57t_post
74    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
75    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
76      same truncation, independent of the face number: affects affects several
77      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
78    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
79      note that biharmonic viscosity + no-slip was not tested in any experiment.
80    o fix bug in non-linear free-surf side-drag ; generate new output for
81      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
82    o make mnc honor the writeBinaryPrec flag for most kinds of output
83    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
84    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
85      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
86    o add brackets in multi-terms sum to get same truncation, independent of
87      the face number (manage to get exactly same value of gU,gV at the cs-edge)
88      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
89    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
90      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
91      a maximum grid-scale Reynolds number.  Also, changes all length calculations
92      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
93      Suggested values of viscosity parameters found in mom_calc_visc.
94      Many new viscosity diagnostics available.
95    
96    checkpoint57s_post
97    o Add clearing-house for viscosity calculations, mom_calc_visc and
98      correct numerous bugs in LeithD and Smagorinsky discretizations.  
99      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
100      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
101      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
102      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
103      The Strain-Tension form is now called with useStrainTensonVisc=.true.
104      ViscAhStrain and viscAhTension are now retired.
105    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
106    o In response to JMC's bug report, genmake2 now ignores any soft-links
107      that it finds in the *current* directory when searching for files.
108      Soft-links found in any other source directories will still work as
109      they did before.
110    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
111      a C routine to unlimit the stack size
112    o mnc-ify pkg/aim snapshot vars
113    o mnc-ify pkg/land as requested by Daniel
114    o various changes to mnc including:
115      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
116      - output can now be grouped so that all files within a group
117          change the ITER portion of their names in lock-step together
118      - can now read ("global") PER-FACE (in addition to PER-TILE) files
119          and works with both EXCH1 and EXCH2 (but needs more testing)
120      - writing works for all verification test cases w/ g77 on Linux
121    
122    checkpoint57r_post
123    o make MNC variable initialization happen earlier
124    o add diagnostics for (almost) each term of the momentum Eq.
125    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
126    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
127    o remove MINIMAL_TAVE_OUTPUT option ;
128      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
129    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
130      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
131    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
132    o add time-dependent SST, SSS control
133    o cost terms in ecco/ modularized (new cost_generic.F)
134    o cost_averages routines are modularized (new cost_averagesgeneric.F)
135    o new infrastructure for seaice model vs. obs misfits in seaice/
136      * driver from the_main_loop.F is seaice_cost_driver.F
137      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
138      * gradient check in Exp. 6a of natl_box_adjoint/
139    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
140      (see README file)
141    
142    checkpoint57q_post
143    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
144    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
145      - bug was reported by Jean-Michel and Ian Fenty
146    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
147      update exp. cpl_aim+ocn output.
148    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
149      Needed for high-res. runs with large global files
150      to be able to limit tapelev size
151    o Changed some tests for adjoint:
152      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
153      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
154      * global_ocean.90x40x15/ back to default 3-level checkpointing
155    o Modifications to enable scripted COMMON to MODULE conversion
156      * verification/OpenAD/code/ has necessary scripts and description;
157      * converts, compiles and runs successfully;
158    
159    checkpoint57p_post
160    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
161    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
162      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
163    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
164    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
165      (was already the case for dissipation with mom_vecinv,
166       and also the case for grad.PhiHyd when staggered-timeStep)
167      This will allow to put dissipation out-off the AB time-stepping.
168     Unfortunately, affects truncation error. Update output of exp. that "fails"
169      (cg2d matching number) and leave the others for later: front_relax(10),
170      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
171      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
172    
173  checkpoint57o_post  checkpoint57o_post
174  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
175    (2) its ready to be documented during the 20050801 DocFest    (2) its ready to be documented during the 20050801 DocFest

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