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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.625 by heimbach, Wed Mar 8 06:43:37 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 adjoint:
8  o moved ptracer ctrl index 17 -> 32    - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
9      - TBD: "hidden" mom_vecinv recomp. in dynamics
10    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
11     (allow to differentiate between forcing components using new integer flags:
12      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
13     and add new flag to put Dissipation tendency out of Adams-Bashforth.
14    o ecco
15      - enable trend removal from SSH anomaly obs.
16    o adjoint
17      - a fix for PmEpR when #undef EXACT_CONSERV
18      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
19      - try to fix "hidden" recomp. in forward_step for NLFS
20        (NLFS seems broken sometimes after I checked it in)
21    o seaice:
22     - add c-grid version of the dynamic solver:
23       + three new routines that are the c-grid substitute lsr, dynsolver
24         and ostres
25       + put a few fields that were local to dynsolver into global common
26         blocks, so that I can move the computation of stresses etc into
27         seaice_lsr (saves coding but may break the adjoint).
28     - replace more hardwired parameters by runtime parameters
29     - add ice masks that mask the rhs of the implicit solvers where there
30       is no ice (commented out in seaice_dynsolver, because i am not sure
31       if this works properly), eventually this should replace the clipping
32       of ice velocities in seaice_dynsolver to +/-40cm/s.
33    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
34      include it only where its needed
35    o move balancing of fluxes before the call of external_forcing_surf
36    o seaice:
37      - correct units of turning angles (now they are really in degrees)
38      - move computation of GWATX/Y out of main routine into dynsolver
39      - initialize GWATX/Y in seaice_init
40    o Apply mask on Fresh-Water flux (needed for SSH forcing).
41      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
42    o seaice: add runtime flags for turning angles (default to zero)
43    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
44      and trend from exf forcing and ctrl control adjustments
45    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
46      (since checkpoint57x_post)
47    o change the default rotation period to 86164.s = the Earth rotation
48    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
49      and based on a reference stratification. Tested within hs94.cs-32x32x5.
50    o seaice advection: add code for choosing between the default (2nd order
51      central differences) and multiDim advection schemes provided by
52      pkg/generic_advdiff
53    o seaice:
54      - removed all references to SEAICE_GRID.h fields from
55        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
56        (cubed-sphere configuration will change a little)
57      - grid computations in seaice_init are obsolete now.
58      - cleaned up code a little so that is easier to read (hopefully).
59      - added new (better?) discretizations of default advection and diffusion
60        (turn on with SEAICEuseFluxForm)
61      - replace 1 in 3d global fields by kSurface in growth.F
62      
63    checkpoint58a_post
64    o seaice:
65      - bug fix in advect.F
66    o shelfice:
67      - separate shelfice load anomaly from pload (breaks with time
68        dependent forcing), => introduce constant field shelficeLoadAnomaly.
69        Its default is 0., but it may be computed more cleverly from (unknown)
70        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
71        done offline. A good approximation of the pressure load anomaly is
72        necessary to avoid large initial adjustment processes underneath
73        deep-reaching shelfice.
74      - small fix in ISOMIP shelfice_thermodynamics
75      - add more sophisticated thermodynamics of Hellmer (1989), this is
76        now the default
77      - give a few constants more intuitive names
78    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
79      if bulk formulae are used in long integration (especially EmPmR). Turn
80      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
81      if balancePrintMean, the imbalance that is substracted is printed to
82      STDOUT.
83    o fix bug (typo) in obcs_apply_eta.F
84    o add a new package shelfice which enables us to model the circulation
85      underneath shelf-ice with draughts of hundreds of meters.
86     - works
87     - to do: + include improved thermodynamics
88              + check whether kSurfC (from model/inc/SURFACE.h) can be used
89                instead of new field kTopC
90              + can we use topoFile, Ro_surf and existing code in ini_depth.F
91                instead of new field R_shelfIce and new code in ini_depth.F
92                and ini_mask_etc.F?
93              + adjust vertical mixing schemes?
94    o seaice pkg:
95     - add a cpp-flag to include a simple formula for a salinity dependent
96       freezing point of sea water at the surface
97     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
98       meridional stresses are now different (and hopefully correct)
99    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
100       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
101       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
102    o pkg/diagnostics: add options and parameters for regional-statistics
103       diagnostics ; define regions by reading a region-mask from a file
104       (might add other options later)
105    o pkg/bulk_force:
106     - add option and parameters to use AIM surface-flux formulae.
107     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
108       others forcing fields (defined in PARM05, parameter file "data") are loaded
109       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
110     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
111     - use the right EXCH call for uwind,vwind (to work on CS-grid).
112     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
113       and parameters (note: calcWindStress replaces .NOT.readwindstress).
114     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
115    
116    checkpoint58
117    o add "--embed-source" option to genmake2 which, when the supporting
118      tools can be compiled (as determined by genmake2) will turn on the
119      embed_files package which then embeds the entire MITgcm source code
120      (*.[fFhc] + Makefile) used for the build within the executable
121      - requested by CNH but off by default
122      - adds a paltry <9MB to the mitgcmuv executable in most cases
123      - only writes the output when useEMBEDSRC in eedata is true
124    o clean up 3-dim. relaxation codes:
125      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
126      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
127      * Thanks to Tom Haine for testing!
128    
129    checkpoint57z_post
130    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
131      affects output (@ truncation level) of exp. plume_on_slope ; updated.
132    o fix the pickup behavior for obcs in combination with ptracers
133    o fix a bug in ptracers_external_fields_load
134    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
135      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
136    o transfered surface NH pressure to eta field (if exactConserv).
137    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
138         and update lab_sea output.txt file.
139    o completing 3-dim. relaxation code: additional term
140         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
141      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
142      * At compile time, in "EXF_OPTIONS.h" set
143          #define  ALLOW_CLIMTEMP_RELAXATION
144          #define  ALLOW_CLIMSALT_RELAXATION
145      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
146          tauThetaClimRelax3Dim = 15552000.0,
147          tauSaltClimRelax3Dim  = 15552000.0,
148      * 3 cases:
149          1) Use a constant-in-time 3-dim. field
150          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
151          3) Real-time relax. to time-evolving prescribed field
152    o Adding Laplacian-type smoothness constraint on
153      initial and boundary (forcing) controls (ic, bc)
154      * enable at compile-time via
155        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
156      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
157      * Absolute scale somewhat unclear so far
158      * no area weighting was included since no other cost term does so far
159    
160    checkpoint57y_post
161    First step for a NLFS adjoint
162    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
163    o new init. routines for calc_r_star, calc_surf_dr
164    o still need to deal with ini_masks_etc
165    o testreport seemed happy
166    checkpoint57y_pre
167    
168    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
169    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
170    o add new offset feature to offline pkg (plus minor cleanup)
171    o cfc fixes for final year of integration
172    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
173      be in GCHEM_OPTIONS).
174    
175    checkpoint57x_post
176    o fix testreport Pb in multiple test experiment.
177    o cleanup our namelist syntax in verification:
178      - make it more F95 standards compliant (some work still needed)
179      - allows the vast majority of our tests to work with gfortran
180    o Non-Hydrostatic:
181     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
182     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
183    o Allow to apply AB on T,S rather than on AB(gT,gS):
184     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
185     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
186       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
187     - need a "clever" read_pickup to restart from the other AB formulation
188    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
189    o remove some unused variables (reduces number of compiler warnings)
190    o adjoint
191      * Disable useVariableViscosity for adjoint for time being
192        (there are a number of extensive recomputations)
193      * Initialize certain variables needed for adjoint
194    
195    checkpoint57w_post
196    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
197                 fix the singleCpuIO RS version of MDSWRITEFIELD
198       and add a WARNING if using globalFiles=T with multi-processors.
199    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
200      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
201    o tracer advection scheme:
202      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
203       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
204       was not very convenient).
205      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
206       (further tests needed for the implicit DST & Flux-Limiter schemes).
207    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
208      and sRef for convenience, handy, when you want to initialize
209      ptracers in a large domain with a constant non-zero value. Also,
210      untangle ptracers_init.F a little.
211    
212    checkpoint57v_post
213    o change dome exp. to use variable viscosity in side-drag terms.
214    o remove all the files from the cfc_offline test since they are now
215      incorporated into tutorial_cfc_offline which has been producing
216      identical results for a few days of testing
217    o add new parameter: sideDragFactor to enable half-slip-side BC
218      and change side-drag S/R to use viscosity from mom_calc_visc
219      (can switch back by setting sideDragFactor=0.); affects results at
220      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
221       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
222    o vorticity & strain are now computed without masking, to account for
223      no-slip-side BC in variable viscosity calculation ; mask is applied
224      anyway later on, before computing advection/coriolis terms.
225    o modify exp4 to test new obcs support for reading from external files
226      and for passive tracers
227    o fix behavior of ptracers_monitor when monitor output is written to a
228      netcdf-file; still not independent of monitor.F (writes in the same
229      file).
230    o change default value of tRef (put a uniform, meaningful value for ocean
231      & atmos) and initialize sRef (was missing, as Martin mentioned).
232    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
233      to be proportional to enstrophy dissipation length.  Thus,
234       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
235      This is now consistent with Smagorinsky and with the manual.
236    
237    checkpoint57u_post
238    o OBCS and PTRACERS: add open boundary support for passive tracers
239      - either use homogenous (pseudo) v.Neumann conditions or prescribe
240        OB-values from file; this is not different from the way theta and salinity
241        are treated
242      - however, Orlanski-radiation conditions are not supported, and the model
243        will stop if you use pTracers and Orlanski at the same time.
244      - beefed up the rountine obcs_external_fields_load: now only those open
245        boundary values are overwritten with values from files for which there
246        are really files, otherwise the OB-fields remain untouched. This makes
247        it possible to use different OBs at different ends of the domain (as
248        with EXF)
249    o reduce number of exch calls in shap_filt (s2).
250    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
251      truncation level) 4/5 MLAdjust test results (11&12 digits match).
252    
253    checkpoint57t_post
254    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
255    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
256      same truncation, independent of the face number: affects affects several
257      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
258    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
259      note that biharmonic viscosity + no-slip was not tested in any experiment.
260    o fix bug in non-linear free-surf side-drag ; generate new output for
261      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
262    o make mnc honor the writeBinaryPrec flag for most kinds of output
263    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
264    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
265      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
266    o add brackets in multi-terms sum to get same truncation, independent of
267      the face number (manage to get exactly same value of gU,gV at the cs-edge)
268      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
269    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
270      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
271      a maximum grid-scale Reynolds number.  Also, changes all length calculations
272      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
273      Suggested values of viscosity parameters found in mom_calc_visc.
274      Many new viscosity diagnostics available.
275    
276    checkpoint57s_post
277    o Add clearing-house for viscosity calculations, mom_calc_visc and
278      correct numerous bugs in LeithD and Smagorinsky discretizations.  
279      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
280      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
281      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
282      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
283      The Strain-Tension form is now called with useStrainTensonVisc=.true.
284      ViscAhStrain and viscAhTension are now retired.
285    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
286    o In response to JMC's bug report, genmake2 now ignores any soft-links
287      that it finds in the *current* directory when searching for files.
288      Soft-links found in any other source directories will still work as
289      they did before.
290    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
291      a C routine to unlimit the stack size
292    o mnc-ify pkg/aim snapshot vars
293    o mnc-ify pkg/land as requested by Daniel
294    o various changes to mnc including:
295      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
296      - output can now be grouped so that all files within a group
297          change the ITER portion of their names in lock-step together
298      - can now read ("global") PER-FACE (in addition to PER-TILE) files
299          and works with both EXCH1 and EXCH2 (but needs more testing)
300      - writing works for all verification test cases w/ g77 on Linux
301    
302    checkpoint57r_post
303    o make MNC variable initialization happen earlier
304    o add diagnostics for (almost) each term of the momentum Eq.
305    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
306    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
307    o remove MINIMAL_TAVE_OUTPUT option ;
308      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
309    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
310      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
311    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
312    o add time-dependent SST, SSS control
313    o cost terms in ecco/ modularized (new cost_generic.F)
314    o cost_averages routines are modularized (new cost_averagesgeneric.F)
315    o new infrastructure for seaice model vs. obs misfits in seaice/
316      * driver from the_main_loop.F is seaice_cost_driver.F
317      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
318      * gradient check in Exp. 6a of natl_box_adjoint/
319    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
320      (see README file)
321    
322    checkpoint57q_post
323    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
324    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
325      - bug was reported by Jean-Michel and Ian Fenty
326    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
327      update exp. cpl_aim+ocn output.
328    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
329      Needed for high-res. runs with large global files
330      to be able to limit tapelev size
331    o Changed some tests for adjoint:
332      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
333      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
334      * global_ocean.90x40x15/ back to default 3-level checkpointing
335    o Modifications to enable scripted COMMON to MODULE conversion
336      * verification/OpenAD/code/ has necessary scripts and description;
337      * converts, compiles and runs successfully;
338    
339    checkpoint57p_post
340    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
341    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
342      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
343    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
344    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
345      (was already the case for dissipation with mom_vecinv,
346       and also the case for grad.PhiHyd when staggered-timeStep)
347      This will allow to put dissipation out-off the AB time-stepping.
348     Unfortunately, affects truncation error. Update output of exp. that "fails"
349      (cg2d matching number) and leave the others for later: front_relax(10),
350      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
351      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
352    
353    checkpoint57o_post
354    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
355      (2) its ready to be documented during the 20050801 DocFest
356    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
357      for ideal_2D_oce and lab_sea on linux_ia32_g77
358    o set to #undef CTRL_SET_OLD_MAXCVARS_30
359      in global1x1_tot/code_seaice_adj to access indices 32, 33
360      (worth another tag)
361    
362    checkpoint57n_post
363    o adding precip control xx_precip 32
364    o adding swflux control xx_swflux 33
365    o Replacing 10 forcing penalty cost routines by 1 generic.
366    o Implementing partitioning in time-mean and variable adjustment
367      for atmos. state.
368    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
369  o in natl_box_adjoint:  o in natl_box_adjoint:
370    * updated: results_bulk/    * updated exp 1 to 10
371    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
372    o updated global1x1/*_seaice_adj/
373      to incorporate latest changes
374    o enable useSingleCpuIO for mdsio vector routines
375      (applies in particular to tapelev I/O)
376    o removed inefficient K-loop in all active_file*control*.F
377    
378  checkpoint57m_post  checkpoint57m_post
379  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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