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revision 1.526 by heimbach, Sat Jul 30 11:47:39 2005 UTC revision 1.618 by jmc, Thu Mar 2 22:52:09 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 Apply mask on Fresh-Water flux (needed for SSH forcing).
8      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
9    o seaice: add runtime flags for turning angles (default to zero)
10    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
11      and trend from exf forcing and ctrl control adjustments
12    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
13      (since checkpoint57x_post)
14    o change the default rotation period to 86164.s = the Earth rotation
15    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
16      and based on a reference stratification. Tested within hs94.cs-32x32x5.
17    o seaice advection: add code for choosing between the default (2nd order
18      central differences) and multiDim advection schemes provided by
19      pkg/generic_advdiff
20    o seaice:
21      - removed all references to SEAICE_GRID.h fields from
22        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
23        (cubed-sphere configuration will change a little)
24      - grid computations in seaice_init are obsolete now.
25      - cleaned up code a little so that is easier to read (hopefully).
26      - added new (better?) discretizations of default advection and diffusion
27        (turn on with SEAICEuseFluxForm)
28      - replace 1 in 3d global fields by kSurface in growth.F
29      
30    checkpoint58a_post
31    o seaice:
32      - bug fix in advect.F
33    o shelfice:
34      - separate shelfice load anomaly from pload (breaks with time
35        dependent forcing), => introduce constant field shelficeLoadAnomaly.
36        Its default is 0., but it may be computed more cleverly from (unknown)
37        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
38        done offline. A good approximation of the pressure load anomaly is
39        necessary to avoid large initial adjustment processes underneath
40        deep-reaching shelfice.
41      - small fix in ISOMIP shelfice_thermodynamics
42      - add more sophisticated thermodynamics of Hellmer (1989), this is
43        now the default
44      - give a few constants more intuitive names
45    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
46      if bulk formulae are used in long integration (especially EmPmR). Turn
47      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
48      if balancePrintMean, the imbalance that is substracted is printed to
49      STDOUT.
50    o fix bug (typo) in obcs_apply_eta.F
51    o add a new package shelfice which enables us to model the circulation
52      underneath shelf-ice with draughts of hundreds of meters.
53     - works
54     - to do: + include improved thermodynamics
55              + check whether kSurfC (from model/inc/SURFACE.h) can be used
56                instead of new field kTopC
57              + can we use topoFile, Ro_surf and existing code in ini_depth.F
58                instead of new field R_shelfIce and new code in ini_depth.F
59                and ini_mask_etc.F?
60              + adjust vertical mixing schemes?
61    o seaice pkg:
62     - add a cpp-flag to include a simple formula for a salinity dependent
63       freezing point of sea water at the surface
64     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
65       meridional stresses are now different (and hopefully correct)
66    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
67       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
68       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
69    o pkg/diagnostics: add options and parameters for regional-statistics
70       diagnostics ; define regions by reading a region-mask from a file
71       (might add other options later)
72    o pkg/bulk_force:
73     - add option and parameters to use AIM surface-flux formulae.
74     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
75       others forcing fields (defined in PARM05, parameter file "data") are loaded
76       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
77     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
78     - use the right EXCH call for uwind,vwind (to work on CS-grid).
79     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
80       and parameters (note: calcWindStress replaces .NOT.readwindstress).
81     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
82    
83    checkpoint58
84    o add "--embed-source" option to genmake2 which, when the supporting
85      tools can be compiled (as determined by genmake2) will turn on the
86      embed_files package which then embeds the entire MITgcm source code
87      (*.[fFhc] + Makefile) used for the build within the executable
88      - requested by CNH but off by default
89      - adds a paltry <9MB to the mitgcmuv executable in most cases
90      - only writes the output when useEMBEDSRC in eedata is true
91    o clean up 3-dim. relaxation codes:
92      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
93      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
94      * Thanks to Tom Haine for testing!
95    
96    checkpoint57z_post
97    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
98      affects output (@ truncation level) of exp. plume_on_slope ; updated.
99    o fix the pickup behavior for obcs in combination with ptracers
100    o fix a bug in ptracers_external_fields_load
101    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
102      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
103    o transfered surface NH pressure to eta field (if exactConserv).
104    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
105         and update lab_sea output.txt file.
106    o completing 3-dim. relaxation code: additional term
107         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
108      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
109      * At compile time, in "EXF_OPTIONS.h" set
110          #define  ALLOW_CLIMTEMP_RELAXATION
111          #define  ALLOW_CLIMSALT_RELAXATION
112      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
113          tauThetaClimRelax3Dim = 15552000.0,
114          tauSaltClimRelax3Dim  = 15552000.0,
115      * 3 cases:
116          1) Use a constant-in-time 3-dim. field
117          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
118          3) Real-time relax. to time-evolving prescribed field
119    o Adding Laplacian-type smoothness constraint on
120      initial and boundary (forcing) controls (ic, bc)
121      * enable at compile-time via
122        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
123      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
124      * Absolute scale somewhat unclear so far
125      * no area weighting was included since no other cost term does so far
126    
127    checkpoint57y_post
128    First step for a NLFS adjoint
129    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
130    o new init. routines for calc_r_star, calc_surf_dr
131    o still need to deal with ini_masks_etc
132    o testreport seemed happy
133    checkpoint57y_pre
134    
135    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
136    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
137    o add new offset feature to offline pkg (plus minor cleanup)
138    o cfc fixes for final year of integration
139    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
140      be in GCHEM_OPTIONS).
141    
142    checkpoint57x_post
143    o fix testreport Pb in multiple test experiment.
144    o cleanup our namelist syntax in verification:
145      - make it more F95 standards compliant (some work still needed)
146      - allows the vast majority of our tests to work with gfortran
147    o Non-Hydrostatic:
148     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
149     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
150    o Allow to apply AB on T,S rather than on AB(gT,gS):
151     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
152     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
153       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
154     - need a "clever" read_pickup to restart from the other AB formulation
155    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
156    o remove some unused variables (reduces number of compiler warnings)
157    o adjoint
158      * Disable useVariableViscosity for adjoint for time being
159        (there are a number of extensive recomputations)
160      * Initialize certain variables needed for adjoint
161    
162    checkpoint57w_post
163    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
164                 fix the singleCpuIO RS version of MDSWRITEFIELD
165       and add a WARNING if using globalFiles=T with multi-processors.
166    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
167      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
168    o tracer advection scheme:
169      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
170       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
171       was not very convenient).
172      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
173       (further tests needed for the implicit DST & Flux-Limiter schemes).
174    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
175      and sRef for convenience, handy, when you want to initialize
176      ptracers in a large domain with a constant non-zero value. Also,
177      untangle ptracers_init.F a little.
178    
179    checkpoint57v_post
180    o change dome exp. to use variable viscosity in side-drag terms.
181    o remove all the files from the cfc_offline test since they are now
182      incorporated into tutorial_cfc_offline which has been producing
183      identical results for a few days of testing
184    o add new parameter: sideDragFactor to enable half-slip-side BC
185      and change side-drag S/R to use viscosity from mom_calc_visc
186      (can switch back by setting sideDragFactor=0.); affects results at
187      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
188       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
189    o vorticity & strain are now computed without masking, to account for
190      no-slip-side BC in variable viscosity calculation ; mask is applied
191      anyway later on, before computing advection/coriolis terms.
192    o modify exp4 to test new obcs support for reading from external files
193      and for passive tracers
194    o fix behavior of ptracers_monitor when monitor output is written to a
195      netcdf-file; still not independent of monitor.F (writes in the same
196      file).
197    o change default value of tRef (put a uniform, meaningful value for ocean
198      & atmos) and initialize sRef (was missing, as Martin mentioned).
199    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
200      to be proportional to enstrophy dissipation length.  Thus,
201       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
202      This is now consistent with Smagorinsky and with the manual.
203    
204    checkpoint57u_post
205    o OBCS and PTRACERS: add open boundary support for passive tracers
206      - either use homogenous (pseudo) v.Neumann conditions or prescribe
207        OB-values from file; this is not different from the way theta and salinity
208        are treated
209      - however, Orlanski-radiation conditions are not supported, and the model
210        will stop if you use pTracers and Orlanski at the same time.
211      - beefed up the rountine obcs_external_fields_load: now only those open
212        boundary values are overwritten with values from files for which there
213        are really files, otherwise the OB-fields remain untouched. This makes
214        it possible to use different OBs at different ends of the domain (as
215        with EXF)
216    o reduce number of exch calls in shap_filt (s2).
217    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
218      truncation level) 4/5 MLAdjust test results (11&12 digits match).
219    
220    checkpoint57t_post
221    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
222    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
223      same truncation, independent of the face number: affects affects several
224      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
225    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
226      note that biharmonic viscosity + no-slip was not tested in any experiment.
227    o fix bug in non-linear free-surf side-drag ; generate new output for
228      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
229    o make mnc honor the writeBinaryPrec flag for most kinds of output
230    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
231    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
232      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
233    o add brackets in multi-terms sum to get same truncation, independent of
234      the face number (manage to get exactly same value of gU,gV at the cs-edge)
235      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
236    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
237      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
238      a maximum grid-scale Reynolds number.  Also, changes all length calculations
239      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
240      Suggested values of viscosity parameters found in mom_calc_visc.
241      Many new viscosity diagnostics available.
242    
243    checkpoint57s_post
244    o Add clearing-house for viscosity calculations, mom_calc_visc and
245      correct numerous bugs in LeithD and Smagorinsky discretizations.  
246      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
247      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
248      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
249      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
250      The Strain-Tension form is now called with useStrainTensonVisc=.true.
251      ViscAhStrain and viscAhTension are now retired.
252    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
253    o In response to JMC's bug report, genmake2 now ignores any soft-links
254      that it finds in the *current* directory when searching for files.
255      Soft-links found in any other source directories will still work as
256      they did before.
257    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
258      a C routine to unlimit the stack size
259    o mnc-ify pkg/aim snapshot vars
260    o mnc-ify pkg/land as requested by Daniel
261    o various changes to mnc including:
262      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
263      - output can now be grouped so that all files within a group
264          change the ITER portion of their names in lock-step together
265      - can now read ("global") PER-FACE (in addition to PER-TILE) files
266          and works with both EXCH1 and EXCH2 (but needs more testing)
267      - writing works for all verification test cases w/ g77 on Linux
268    
269    checkpoint57r_post
270    o make MNC variable initialization happen earlier
271    o add diagnostics for (almost) each term of the momentum Eq.
272    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
273    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
274    o remove MINIMAL_TAVE_OUTPUT option ;
275      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
276    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
277      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
278    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
279    o add time-dependent SST, SSS control
280    o cost terms in ecco/ modularized (new cost_generic.F)
281    o cost_averages routines are modularized (new cost_averagesgeneric.F)
282    o new infrastructure for seaice model vs. obs misfits in seaice/
283      * driver from the_main_loop.F is seaice_cost_driver.F
284      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
285      * gradient check in Exp. 6a of natl_box_adjoint/
286    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
287      (see README file)
288    
289    checkpoint57q_post
290    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
291    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
292      - bug was reported by Jean-Michel and Ian Fenty
293    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
294      update exp. cpl_aim+ocn output.
295    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
296      Needed for high-res. runs with large global files
297      to be able to limit tapelev size
298    o Changed some tests for adjoint:
299      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
300      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
301      * global_ocean.90x40x15/ back to default 3-level checkpointing
302    o Modifications to enable scripted COMMON to MODULE conversion
303      * verification/OpenAD/code/ has necessary scripts and description;
304      * converts, compiles and runs successfully;
305    
306    checkpoint57p_post
307    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
308    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
309      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
310    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
311    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
312      (was already the case for dissipation with mom_vecinv,
313       and also the case for grad.PhiHyd when staggered-timeStep)
314      This will allow to put dissipation out-off the AB time-stepping.
315     Unfortunately, affects truncation error. Update output of exp. that "fails"
316      (cg2d matching number) and leave the others for later: front_relax(10),
317      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
318      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
319    
320  checkpoint57o_post  checkpoint57o_post
321  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
322    (2) its ready to be documented during the 20050801 DocFest    (2) its ready to be documented during the 20050801 DocFest

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