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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.636 by jmc, Mon Mar 20 21:54:37 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 adding precip control xx_precip  o move calendarDumps from "data" to "data.cal" and clean-up the code
8  o moved ptracer ctrl index 17 -> 32    with a simple call to pkg/cal S/R: CAL_TIME2WRITE
9    o add useEXF & useCAL flags (for now, set in hard-coded way)
10    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
11      (were missing in NH mode, and wrong in quasihydrostatic mode).
12      waiting for Chris updated version of calc_gw to add those CALLs.
13    o fix bug in quasihydrostatic S/R ;
14      add a test for this option: global_ocean.90x40x15.qshyd
15    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
16      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
17    o add on/off flag useOffLine for package OFFLINE
18    o seaice:
19      - modify advection so that it works also on the C-grid
20      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
21        problem in multi-tile runs with C-grid
22      - add flags for clipping ice velocities and/or masking solver forcing
23      - fix drag (ocean on ice) formulation and a bug that caused noise in the
24        C-grid solver
25      - added a few comments to seaice_diffusion.F
26      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
27        are now exclusive)
28      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
29        required re-ordering the code a little:
30       + make DAIRN global variable (defined in SEAICE)
31       + move computation of the viscosities eta and zeta into a new separate
32         routine (because I need to recompute them in seaice_ocean_stress.F)
33    
34    checkpoint58b_post
35    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
36      update output.txt of exp. aim.5l_cs.thSI
37    o various mnc cleanups and improvements:
38      + shrink lookup tables by factor of ~4
39      + better error reporting when running out of lookup space
40      + able to handle longer path/file names (up to 500 chars)
41    o adjoint:
42      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
43      - TBD: "hidden" mom_vecinv recomp. in dynamics
44    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
45     (allow to differentiate between forcing components using new integer flags:
46      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
47     and add new flag to put Dissipation tendency out of Adams-Bashforth.
48    o ecco
49      - enable trend removal from SSH anomaly obs.
50    o adjoint
51      - a fix for PmEpR when #undef EXACT_CONSERV
52      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
53      - try to fix "hidden" recomp. in forward_step for NLFS
54        (NLFS seems broken sometimes after I checked it in)
55    o seaice:
56     - add c-grid version of the dynamic solver:
57       + three new routines that are the c-grid substitute lsr, dynsolver
58         and ostres
59       + put a few fields that were local to dynsolver into global common
60         blocks, so that I can move the computation of stresses etc into
61         seaice_lsr (saves coding but may break the adjoint).
62     - replace more hardwired parameters by runtime parameters
63     - add ice masks that mask the rhs of the implicit solvers where there
64       is no ice (commented out in seaice_dynsolver, because i am not sure
65       if this works properly), eventually this should replace the clipping
66       of ice velocities in seaice_dynsolver to +/-40cm/s.
67    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
68      include it only where its needed
69    o move balancing of fluxes before the call of external_forcing_surf
70    o seaice:
71      - correct units of turning angles (now they are really in degrees)
72      - move computation of GWATX/Y out of main routine into dynsolver
73      - initialize GWATX/Y in seaice_init
74    o Apply mask on Fresh-Water flux (needed for SSH forcing).
75      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
76    o seaice: add runtime flags for turning angles (default to zero)
77    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
78      and trend from exf forcing and ctrl control adjustments
79    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
80      (since checkpoint57x_post)
81    o change the default rotation period to 86164.s = the Earth rotation
82    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
83      and based on a reference stratification. Tested within hs94.cs-32x32x5.
84    o seaice advection: add code for choosing between the default (2nd order
85      central differences) and multiDim advection schemes provided by
86      pkg/generic_advdiff
87    o seaice:
88      - removed all references to SEAICE_GRID.h fields from
89        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
90        (cubed-sphere configuration will change a little)
91      - grid computations in seaice_init are obsolete now.
92      - cleaned up code a little so that is easier to read (hopefully).
93      - added new (better?) discretizations of default advection and diffusion
94        (turn on with SEAICEuseFluxForm)
95      - replace 1 in 3d global fields by kSurface in growth.F
96      
97    checkpoint58a_post
98    o seaice:
99      - bug fix in advect.F
100    o shelfice:
101      - separate shelfice load anomaly from pload (breaks with time
102        dependent forcing), => introduce constant field shelficeLoadAnomaly.
103        Its default is 0., but it may be computed more cleverly from (unknown)
104        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
105        done offline. A good approximation of the pressure load anomaly is
106        necessary to avoid large initial adjustment processes underneath
107        deep-reaching shelfice.
108      - small fix in ISOMIP shelfice_thermodynamics
109      - add more sophisticated thermodynamics of Hellmer (1989), this is
110        now the default
111      - give a few constants more intuitive names
112    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
113      if bulk formulae are used in long integration (especially EmPmR). Turn
114      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
115      if balancePrintMean, the imbalance that is substracted is printed to
116      STDOUT.
117    o fix bug (typo) in obcs_apply_eta.F
118    o add a new package shelfice which enables us to model the circulation
119      underneath shelf-ice with draughts of hundreds of meters.
120     - works
121     - to do: + include improved thermodynamics
122              + check whether kSurfC (from model/inc/SURFACE.h) can be used
123                instead of new field kTopC
124              + can we use topoFile, Ro_surf and existing code in ini_depth.F
125                instead of new field R_shelfIce and new code in ini_depth.F
126                and ini_mask_etc.F?
127              + adjust vertical mixing schemes?
128    o seaice pkg:
129     - add a cpp-flag to include a simple formula for a salinity dependent
130       freezing point of sea water at the surface
131     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
132       meridional stresses are now different (and hopefully correct)
133    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
134       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
135       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
136    o pkg/diagnostics: add options and parameters for regional-statistics
137       diagnostics ; define regions by reading a region-mask from a file
138       (might add other options later)
139    o pkg/bulk_force:
140     - add option and parameters to use AIM surface-flux formulae.
141     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
142       others forcing fields (defined in PARM05, parameter file "data") are loaded
143       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
144     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
145     - use the right EXCH call for uwind,vwind (to work on CS-grid).
146     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
147       and parameters (note: calcWindStress replaces .NOT.readwindstress).
148     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
149    
150    checkpoint58
151    o add "--embed-source" option to genmake2 which, when the supporting
152      tools can be compiled (as determined by genmake2) will turn on the
153      embed_files package which then embeds the entire MITgcm source code
154      (*.[fFhc] + Makefile) used for the build within the executable
155      - requested by CNH but off by default
156      - adds a paltry <9MB to the mitgcmuv executable in most cases
157      - only writes the output when useEMBEDSRC in eedata is true
158    o clean up 3-dim. relaxation codes:
159      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
160      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
161      * Thanks to Tom Haine for testing!
162    
163    checkpoint57z_post
164    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
165      affects output (@ truncation level) of exp. plume_on_slope ; updated.
166    o fix the pickup behavior for obcs in combination with ptracers
167    o fix a bug in ptracers_external_fields_load
168    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
169      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
170    o transfered surface NH pressure to eta field (if exactConserv).
171    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
172         and update lab_sea output.txt file.
173    o completing 3-dim. relaxation code: additional term
174         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
175      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
176      * At compile time, in "EXF_OPTIONS.h" set
177          #define  ALLOW_CLIMTEMP_RELAXATION
178          #define  ALLOW_CLIMSALT_RELAXATION
179      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
180          tauThetaClimRelax3Dim = 15552000.0,
181          tauSaltClimRelax3Dim  = 15552000.0,
182      * 3 cases:
183          1) Use a constant-in-time 3-dim. field
184          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
185          3) Real-time relax. to time-evolving prescribed field
186    o Adding Laplacian-type smoothness constraint on
187      initial and boundary (forcing) controls (ic, bc)
188      * enable at compile-time via
189        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
190      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
191      * Absolute scale somewhat unclear so far
192      * no area weighting was included since no other cost term does so far
193    
194    checkpoint57y_post
195    First step for a NLFS adjoint
196    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
197    o new init. routines for calc_r_star, calc_surf_dr
198    o still need to deal with ini_masks_etc
199    o testreport seemed happy
200    checkpoint57y_pre
201    
202    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
203    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
204    o add new offset feature to offline pkg (plus minor cleanup)
205    o cfc fixes for final year of integration
206    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
207      be in GCHEM_OPTIONS).
208    
209    checkpoint57x_post
210    o fix testreport Pb in multiple test experiment.
211    o cleanup our namelist syntax in verification:
212      - make it more F95 standards compliant (some work still needed)
213      - allows the vast majority of our tests to work with gfortran
214    o Non-Hydrostatic:
215     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
216     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
217    o Allow to apply AB on T,S rather than on AB(gT,gS):
218     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
219     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
220       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
221     - need a "clever" read_pickup to restart from the other AB formulation
222    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
223    o remove some unused variables (reduces number of compiler warnings)
224    o adjoint
225      * Disable useVariableViscosity for adjoint for time being
226        (there are a number of extensive recomputations)
227      * Initialize certain variables needed for adjoint
228    
229    checkpoint57w_post
230    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
231                 fix the singleCpuIO RS version of MDSWRITEFIELD
232       and add a WARNING if using globalFiles=T with multi-processors.
233    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
234      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
235    o tracer advection scheme:
236      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
237       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
238       was not very convenient).
239      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
240       (further tests needed for the implicit DST & Flux-Limiter schemes).
241    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
242      and sRef for convenience, handy, when you want to initialize
243      ptracers in a large domain with a constant non-zero value. Also,
244      untangle ptracers_init.F a little.
245    
246    checkpoint57v_post
247    o change dome exp. to use variable viscosity in side-drag terms.
248    o remove all the files from the cfc_offline test since they are now
249      incorporated into tutorial_cfc_offline which has been producing
250      identical results for a few days of testing
251    o add new parameter: sideDragFactor to enable half-slip-side BC
252      and change side-drag S/R to use viscosity from mom_calc_visc
253      (can switch back by setting sideDragFactor=0.); affects results at
254      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
255       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
256    o vorticity & strain are now computed without masking, to account for
257      no-slip-side BC in variable viscosity calculation ; mask is applied
258      anyway later on, before computing advection/coriolis terms.
259    o modify exp4 to test new obcs support for reading from external files
260      and for passive tracers
261    o fix behavior of ptracers_monitor when monitor output is written to a
262      netcdf-file; still not independent of monitor.F (writes in the same
263      file).
264    o change default value of tRef (put a uniform, meaningful value for ocean
265      & atmos) and initialize sRef (was missing, as Martin mentioned).
266    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
267      to be proportional to enstrophy dissipation length.  Thus,
268       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
269      This is now consistent with Smagorinsky and with the manual.
270    
271    checkpoint57u_post
272    o OBCS and PTRACERS: add open boundary support for passive tracers
273      - either use homogenous (pseudo) v.Neumann conditions or prescribe
274        OB-values from file; this is not different from the way theta and salinity
275        are treated
276      - however, Orlanski-radiation conditions are not supported, and the model
277        will stop if you use pTracers and Orlanski at the same time.
278      - beefed up the rountine obcs_external_fields_load: now only those open
279        boundary values are overwritten with values from files for which there
280        are really files, otherwise the OB-fields remain untouched. This makes
281        it possible to use different OBs at different ends of the domain (as
282        with EXF)
283    o reduce number of exch calls in shap_filt (s2).
284    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
285      truncation level) 4/5 MLAdjust test results (11&12 digits match).
286    
287    checkpoint57t_post
288    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
289    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
290      same truncation, independent of the face number: affects affects several
291      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
292    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
293      note that biharmonic viscosity + no-slip was not tested in any experiment.
294    o fix bug in non-linear free-surf side-drag ; generate new output for
295      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
296    o make mnc honor the writeBinaryPrec flag for most kinds of output
297    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
298    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
299      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
300    o add brackets in multi-terms sum to get same truncation, independent of
301      the face number (manage to get exactly same value of gU,gV at the cs-edge)
302      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
303    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
304      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
305      a maximum grid-scale Reynolds number.  Also, changes all length calculations
306      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
307      Suggested values of viscosity parameters found in mom_calc_visc.
308      Many new viscosity diagnostics available.
309    
310    checkpoint57s_post
311    o Add clearing-house for viscosity calculations, mom_calc_visc and
312      correct numerous bugs in LeithD and Smagorinsky discretizations.  
313      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
314      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
315      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
316      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
317      The Strain-Tension form is now called with useStrainTensonVisc=.true.
318      ViscAhStrain and viscAhTension are now retired.
319    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
320    o In response to JMC's bug report, genmake2 now ignores any soft-links
321      that it finds in the *current* directory when searching for files.
322      Soft-links found in any other source directories will still work as
323      they did before.
324    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
325      a C routine to unlimit the stack size
326    o mnc-ify pkg/aim snapshot vars
327    o mnc-ify pkg/land as requested by Daniel
328    o various changes to mnc including:
329      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
330      - output can now be grouped so that all files within a group
331          change the ITER portion of their names in lock-step together
332      - can now read ("global") PER-FACE (in addition to PER-TILE) files
333          and works with both EXCH1 and EXCH2 (but needs more testing)
334      - writing works for all verification test cases w/ g77 on Linux
335    
336    checkpoint57r_post
337    o make MNC variable initialization happen earlier
338    o add diagnostics for (almost) each term of the momentum Eq.
339    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
340    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
341    o remove MINIMAL_TAVE_OUTPUT option ;
342      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
343    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
344      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
345    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
346    o add time-dependent SST, SSS control
347    o cost terms in ecco/ modularized (new cost_generic.F)
348    o cost_averages routines are modularized (new cost_averagesgeneric.F)
349    o new infrastructure for seaice model vs. obs misfits in seaice/
350      * driver from the_main_loop.F is seaice_cost_driver.F
351      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
352      * gradient check in Exp. 6a of natl_box_adjoint/
353    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
354      (see README file)
355    
356    checkpoint57q_post
357    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
358    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
359      - bug was reported by Jean-Michel and Ian Fenty
360    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
361      update exp. cpl_aim+ocn output.
362    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
363      Needed for high-res. runs with large global files
364      to be able to limit tapelev size
365    o Changed some tests for adjoint:
366      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
367      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
368      * global_ocean.90x40x15/ back to default 3-level checkpointing
369    o Modifications to enable scripted COMMON to MODULE conversion
370      * verification/OpenAD/code/ has necessary scripts and description;
371      * converts, compiles and runs successfully;
372    
373    checkpoint57p_post
374    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
375    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
376      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
377    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
378    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
379      (was already the case for dissipation with mom_vecinv,
380       and also the case for grad.PhiHyd when staggered-timeStep)
381      This will allow to put dissipation out-off the AB time-stepping.
382     Unfortunately, affects truncation error. Update output of exp. that "fails"
383      (cg2d matching number) and leave the others for later: front_relax(10),
384      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
385      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
386    
387    checkpoint57o_post
388    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
389      (2) its ready to be documented during the 20050801 DocFest
390    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
391      for ideal_2D_oce and lab_sea on linux_ia32_g77
392    o set to #undef CTRL_SET_OLD_MAXCVARS_30
393      in global1x1_tot/code_seaice_adj to access indices 32, 33
394      (worth another tag)
395    
396    checkpoint57n_post
397    o adding precip control xx_precip 32
398    o adding swflux control xx_swflux 33
399    o Replacing 10 forcing penalty cost routines by 1 generic.
400    o Implementing partitioning in time-mean and variable adjustment
401      for atmos. state.
402    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
403  o in natl_box_adjoint:  o in natl_box_adjoint:
404    * updated: results_bulk/    * updated exp 1 to 10
405    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
406    o updated global1x1/*_seaice_adj/
407      to incorporate latest changes
408    o enable useSingleCpuIO for mdsio vector routines
409      (applies in particular to tapelev I/O)
410    o removed inefficient K-loop in all active_file*control*.F
411    
412  checkpoint57m_post  checkpoint57m_post
413  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)

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