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revision 1.526 by heimbach, Sat Jul 30 11:47:39 2005 UTC revision 1.575 by jmc, Mon Oct 24 18:20:11 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 write grid-file(s) in only one format (MDS or MNC): default=MNC (if
8      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
9    o tracer advection scheme:
10      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
11       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
12       was not very convenient).
13      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
14       (further tests needed for the implicit DST & Flux-Limiter schemes).
15    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
16      and sRef for convenience, handy, when you want to initialize
17      ptracers in a large domain with a constant non-zero value. Also,
18      untangle ptracers_init.F a little.
19    
20    checkpoint57v_post
21    o change dome exp. to use variable viscosity in side-drag terms.
22    o remove all the files from the cfc_offline test since they are now
23      incorporated into tutorial_cfc_offline which has been producing
24      identical results for a few days of testing
25    o add new parameter: sideDragFactor to enable half-slip-side BC
26      and change side-drag S/R to use viscosity from mom_calc_visc
27      (can switch back by setting sideDragFactor=0.); affects results at
28      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
29       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
30    o vorticity & strain are now computed without masking, to account for
31      no-slip-side BC in variable viscosity calculation ; mask is applied
32      anyway later on, before computing advection/coriolis terms.
33    o modify exp4 to test new obcs support for reading from external files
34      and for passive tracers
35    o fix behavior of ptracers_monitor when monitor output is written to a
36      netcdf-file; still not independent of monitor.F (writes in the same
37      file).
38    o change default value of tRef (put a uniform, meaningful value for ocean
39      & atmos) and initialize sRef (was missing, as Martin mentioned).
40    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
41      to be proportional to enstrophy dissipation length.  Thus,
42       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
43      This is now consistent with Smagorinsky and with the manual.
44    
45    checkpoint57u_post
46    o OBCS and PTRACERS: add open boundary support for passive tracers
47      - either use homogenous (pseudo) v.Neumann conditions or prescribe
48        OB-values from file; this is not different from the way theta and salinity
49        are treated
50      - however, Orlanski-radiation conditions are not supported, and the model
51        will stop if you use pTracers and Orlanski at the same time.
52      - beefed up the rountine obcs_external_fields_load: now only those open
53        boundary values are overwritten with values from files for which there
54        are really files, otherwise the OB-fields remain untouched. This makes
55        it possible to use different OBs at different ends of the domain (as
56        with EXF)
57    o reduce number of exch calls in shap_filt (s2).
58    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
59      truncation level) 4/5 MLAdjust test results (11&12 digits match).
60    
61    checkpoint57t_post
62    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
63    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
64      same truncation, independent of the face number: affects affects several
65      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
66    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
67      note that biharmonic viscosity + no-slip was not tested in any experiment.
68    o fix bug in non-linear free-surf side-drag ; generate new output for
69      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
70    o make mnc honor the writeBinaryPrec flag for most kinds of output
71    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
72    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
73      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
74    o add brackets in multi-terms sum to get same truncation, independent of
75      the face number (manage to get exactly same value of gU,gV at the cs-edge)
76      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
77    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
78      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
79      a maximum grid-scale Reynolds number.  Also, changes all length calculations
80      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
81      Suggested values of viscosity parameters found in mom_calc_visc.
82      Many new viscosity diagnostics available.
83    
84    checkpoint57s_post
85    o Add clearing-house for viscosity calculations, mom_calc_visc and
86      correct numerous bugs in LeithD and Smagorinsky discretizations.  
87      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
88      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
89      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
90      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
91      The Strain-Tension form is now called with useStrainTensonVisc=.true.
92      ViscAhStrain and viscAhTension are now retired.
93    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
94    o In response to JMC's bug report, genmake2 now ignores any soft-links
95      that it finds in the *current* directory when searching for files.
96      Soft-links found in any other source directories will still work as
97      they did before.
98    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
99      a C routine to unlimit the stack size
100    o mnc-ify pkg/aim snapshot vars
101    o mnc-ify pkg/land as requested by Daniel
102    o various changes to mnc including:
103      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
104      - output can now be grouped so that all files within a group
105          change the ITER portion of their names in lock-step together
106      - can now read ("global") PER-FACE (in addition to PER-TILE) files
107          and works with both EXCH1 and EXCH2 (but needs more testing)
108      - writing works for all verification test cases w/ g77 on Linux
109    
110    checkpoint57r_post
111    o make MNC variable initialization happen earlier
112    o add diagnostics for (almost) each term of the momentum Eq.
113    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
114    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
115    o remove MINIMAL_TAVE_OUTPUT option ;
116      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
117    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
118      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
119    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
120    o add time-dependent SST, SSS control
121    o cost terms in ecco/ modularized (new cost_generic.F)
122    o cost_averages routines are modularized (new cost_averagesgeneric.F)
123    o new infrastructure for seaice model vs. obs misfits in seaice/
124      * driver from the_main_loop.F is seaice_cost_driver.F
125      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
126      * gradient check in Exp. 6a of natl_box_adjoint/
127    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
128      (see README file)
129    
130    checkpoint57q_post
131    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
132    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
133      - bug was reported by Jean-Michel and Ian Fenty
134    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
135      update exp. cpl_aim+ocn output.
136    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
137      Needed for high-res. runs with large global files
138      to be able to limit tapelev size
139    o Changed some tests for adjoint:
140      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
141      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
142      * global_ocean.90x40x15/ back to default 3-level checkpointing
143    o Modifications to enable scripted COMMON to MODULE conversion
144      * verification/OpenAD/code/ has necessary scripts and description;
145      * converts, compiles and runs successfully;
146    
147    checkpoint57p_post
148    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
149    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
150      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
151    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
152    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
153      (was already the case for dissipation with mom_vecinv,
154       and also the case for grad.PhiHyd when staggered-timeStep)
155      This will allow to put dissipation out-off the AB time-stepping.
156     Unfortunately, affects truncation error. Update output of exp. that "fails"
157      (cg2d matching number) and leave the others for later: front_relax(10),
158      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
159      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
160    
161  checkpoint57o_post  checkpoint57o_post
162  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
163    (2) its ready to be documented during the 20050801 DocFest    (2) its ready to be documented during the 20050801 DocFest

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