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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.631 by mlosch, Wed Mar 15 15:05:53 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 seaice:
8  o moved ptracer ctrl index 17 -> 32    - modify advection so that it works also on the C-grid
9      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
10        problem in multi-tile runs with C-grid
11      - remove velocity clipping from seaice_dynsolver with C-grid
12      - fix drag (ocean on ice) formulation and a bug that caused noise in the
13        C-grid solver
14    
15    checkpoint58b_post
16    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
17      update output.txt of exp. aim.5l_cs.thSI
18    o various mnc cleanups and improvements:
19      + shrink lookup tables by factor of ~4
20      + better error reporting when running out of lookup space
21      + able to handle longer path/file names (up to 500 chars)
22    o adjoint:
23      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
24      - TBD: "hidden" mom_vecinv recomp. in dynamics
25    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
26     (allow to differentiate between forcing components using new integer flags:
27      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
28     and add new flag to put Dissipation tendency out of Adams-Bashforth.
29    o ecco
30      - enable trend removal from SSH anomaly obs.
31    o adjoint
32      - a fix for PmEpR when #undef EXACT_CONSERV
33      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
34      - try to fix "hidden" recomp. in forward_step for NLFS
35        (NLFS seems broken sometimes after I checked it in)
36    o seaice:
37     - add c-grid version of the dynamic solver:
38       + three new routines that are the c-grid substitute lsr, dynsolver
39         and ostres
40       + put a few fields that were local to dynsolver into global common
41         blocks, so that I can move the computation of stresses etc into
42         seaice_lsr (saves coding but may break the adjoint).
43     - replace more hardwired parameters by runtime parameters
44     - add ice masks that mask the rhs of the implicit solvers where there
45       is no ice (commented out in seaice_dynsolver, because i am not sure
46       if this works properly), eventually this should replace the clipping
47       of ice velocities in seaice_dynsolver to +/-40cm/s.
48    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
49      include it only where its needed
50    o move balancing of fluxes before the call of external_forcing_surf
51    o seaice:
52      - correct units of turning angles (now they are really in degrees)
53      - move computation of GWATX/Y out of main routine into dynsolver
54      - initialize GWATX/Y in seaice_init
55    o Apply mask on Fresh-Water flux (needed for SSH forcing).
56      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
57    o seaice: add runtime flags for turning angles (default to zero)
58    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
59      and trend from exf forcing and ctrl control adjustments
60    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
61      (since checkpoint57x_post)
62    o change the default rotation period to 86164.s = the Earth rotation
63    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
64      and based on a reference stratification. Tested within hs94.cs-32x32x5.
65    o seaice advection: add code for choosing between the default (2nd order
66      central differences) and multiDim advection schemes provided by
67      pkg/generic_advdiff
68    o seaice:
69      - removed all references to SEAICE_GRID.h fields from
70        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
71        (cubed-sphere configuration will change a little)
72      - grid computations in seaice_init are obsolete now.
73      - cleaned up code a little so that is easier to read (hopefully).
74      - added new (better?) discretizations of default advection and diffusion
75        (turn on with SEAICEuseFluxForm)
76      - replace 1 in 3d global fields by kSurface in growth.F
77      
78    checkpoint58a_post
79    o seaice:
80      - bug fix in advect.F
81    o shelfice:
82      - separate shelfice load anomaly from pload (breaks with time
83        dependent forcing), => introduce constant field shelficeLoadAnomaly.
84        Its default is 0., but it may be computed more cleverly from (unknown)
85        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
86        done offline. A good approximation of the pressure load anomaly is
87        necessary to avoid large initial adjustment processes underneath
88        deep-reaching shelfice.
89      - small fix in ISOMIP shelfice_thermodynamics
90      - add more sophisticated thermodynamics of Hellmer (1989), this is
91        now the default
92      - give a few constants more intuitive names
93    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
94      if bulk formulae are used in long integration (especially EmPmR). Turn
95      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
96      if balancePrintMean, the imbalance that is substracted is printed to
97      STDOUT.
98    o fix bug (typo) in obcs_apply_eta.F
99    o add a new package shelfice which enables us to model the circulation
100      underneath shelf-ice with draughts of hundreds of meters.
101     - works
102     - to do: + include improved thermodynamics
103              + check whether kSurfC (from model/inc/SURFACE.h) can be used
104                instead of new field kTopC
105              + can we use topoFile, Ro_surf and existing code in ini_depth.F
106                instead of new field R_shelfIce and new code in ini_depth.F
107                and ini_mask_etc.F?
108              + adjust vertical mixing schemes?
109    o seaice pkg:
110     - add a cpp-flag to include a simple formula for a salinity dependent
111       freezing point of sea water at the surface
112     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
113       meridional stresses are now different (and hopefully correct)
114    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
115       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
116       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
117    o pkg/diagnostics: add options and parameters for regional-statistics
118       diagnostics ; define regions by reading a region-mask from a file
119       (might add other options later)
120    o pkg/bulk_force:
121     - add option and parameters to use AIM surface-flux formulae.
122     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
123       others forcing fields (defined in PARM05, parameter file "data") are loaded
124       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
125     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
126     - use the right EXCH call for uwind,vwind (to work on CS-grid).
127     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
128       and parameters (note: calcWindStress replaces .NOT.readwindstress).
129     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
130    
131    checkpoint58
132    o add "--embed-source" option to genmake2 which, when the supporting
133      tools can be compiled (as determined by genmake2) will turn on the
134      embed_files package which then embeds the entire MITgcm source code
135      (*.[fFhc] + Makefile) used for the build within the executable
136      - requested by CNH but off by default
137      - adds a paltry <9MB to the mitgcmuv executable in most cases
138      - only writes the output when useEMBEDSRC in eedata is true
139    o clean up 3-dim. relaxation codes:
140      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
141      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
142      * Thanks to Tom Haine for testing!
143    
144    checkpoint57z_post
145    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
146      affects output (@ truncation level) of exp. plume_on_slope ; updated.
147    o fix the pickup behavior for obcs in combination with ptracers
148    o fix a bug in ptracers_external_fields_load
149    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
150      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
151    o transfered surface NH pressure to eta field (if exactConserv).
152    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
153         and update lab_sea output.txt file.
154    o completing 3-dim. relaxation code: additional term
155         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
156      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
157      * At compile time, in "EXF_OPTIONS.h" set
158          #define  ALLOW_CLIMTEMP_RELAXATION
159          #define  ALLOW_CLIMSALT_RELAXATION
160      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
161          tauThetaClimRelax3Dim = 15552000.0,
162          tauSaltClimRelax3Dim  = 15552000.0,
163      * 3 cases:
164          1) Use a constant-in-time 3-dim. field
165          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
166          3) Real-time relax. to time-evolving prescribed field
167    o Adding Laplacian-type smoothness constraint on
168      initial and boundary (forcing) controls (ic, bc)
169      * enable at compile-time via
170        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
171      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
172      * Absolute scale somewhat unclear so far
173      * no area weighting was included since no other cost term does so far
174    
175    checkpoint57y_post
176    First step for a NLFS adjoint
177    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
178    o new init. routines for calc_r_star, calc_surf_dr
179    o still need to deal with ini_masks_etc
180    o testreport seemed happy
181    checkpoint57y_pre
182    
183    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
184    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
185    o add new offset feature to offline pkg (plus minor cleanup)
186    o cfc fixes for final year of integration
187    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
188      be in GCHEM_OPTIONS).
189    
190    checkpoint57x_post
191    o fix testreport Pb in multiple test experiment.
192    o cleanup our namelist syntax in verification:
193      - make it more F95 standards compliant (some work still needed)
194      - allows the vast majority of our tests to work with gfortran
195    o Non-Hydrostatic:
196     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
197     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
198    o Allow to apply AB on T,S rather than on AB(gT,gS):
199     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
200     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
201       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
202     - need a "clever" read_pickup to restart from the other AB formulation
203    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
204    o remove some unused variables (reduces number of compiler warnings)
205    o adjoint
206      * Disable useVariableViscosity for adjoint for time being
207        (there are a number of extensive recomputations)
208      * Initialize certain variables needed for adjoint
209    
210    checkpoint57w_post
211    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
212                 fix the singleCpuIO RS version of MDSWRITEFIELD
213       and add a WARNING if using globalFiles=T with multi-processors.
214    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
215      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
216    o tracer advection scheme:
217      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
218       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
219       was not very convenient).
220      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
221       (further tests needed for the implicit DST & Flux-Limiter schemes).
222    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
223      and sRef for convenience, handy, when you want to initialize
224      ptracers in a large domain with a constant non-zero value. Also,
225      untangle ptracers_init.F a little.
226    
227    checkpoint57v_post
228    o change dome exp. to use variable viscosity in side-drag terms.
229    o remove all the files from the cfc_offline test since they are now
230      incorporated into tutorial_cfc_offline which has been producing
231      identical results for a few days of testing
232    o add new parameter: sideDragFactor to enable half-slip-side BC
233      and change side-drag S/R to use viscosity from mom_calc_visc
234      (can switch back by setting sideDragFactor=0.); affects results at
235      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
236       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
237    o vorticity & strain are now computed without masking, to account for
238      no-slip-side BC in variable viscosity calculation ; mask is applied
239      anyway later on, before computing advection/coriolis terms.
240    o modify exp4 to test new obcs support for reading from external files
241      and for passive tracers
242    o fix behavior of ptracers_monitor when monitor output is written to a
243      netcdf-file; still not independent of monitor.F (writes in the same
244      file).
245    o change default value of tRef (put a uniform, meaningful value for ocean
246      & atmos) and initialize sRef (was missing, as Martin mentioned).
247    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
248      to be proportional to enstrophy dissipation length.  Thus,
249       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
250      This is now consistent with Smagorinsky and with the manual.
251    
252    checkpoint57u_post
253    o OBCS and PTRACERS: add open boundary support for passive tracers
254      - either use homogenous (pseudo) v.Neumann conditions or prescribe
255        OB-values from file; this is not different from the way theta and salinity
256        are treated
257      - however, Orlanski-radiation conditions are not supported, and the model
258        will stop if you use pTracers and Orlanski at the same time.
259      - beefed up the rountine obcs_external_fields_load: now only those open
260        boundary values are overwritten with values from files for which there
261        are really files, otherwise the OB-fields remain untouched. This makes
262        it possible to use different OBs at different ends of the domain (as
263        with EXF)
264    o reduce number of exch calls in shap_filt (s2).
265    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
266      truncation level) 4/5 MLAdjust test results (11&12 digits match).
267    
268    checkpoint57t_post
269    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
270    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
271      same truncation, independent of the face number: affects affects several
272      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
273    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
274      note that biharmonic viscosity + no-slip was not tested in any experiment.
275    o fix bug in non-linear free-surf side-drag ; generate new output for
276      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
277    o make mnc honor the writeBinaryPrec flag for most kinds of output
278    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
279    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
280      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
281    o add brackets in multi-terms sum to get same truncation, independent of
282      the face number (manage to get exactly same value of gU,gV at the cs-edge)
283      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
284    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
285      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
286      a maximum grid-scale Reynolds number.  Also, changes all length calculations
287      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
288      Suggested values of viscosity parameters found in mom_calc_visc.
289      Many new viscosity diagnostics available.
290    
291    checkpoint57s_post
292    o Add clearing-house for viscosity calculations, mom_calc_visc and
293      correct numerous bugs in LeithD and Smagorinsky discretizations.  
294      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
295      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
296      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
297      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
298      The Strain-Tension form is now called with useStrainTensonVisc=.true.
299      ViscAhStrain and viscAhTension are now retired.
300    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
301    o In response to JMC's bug report, genmake2 now ignores any soft-links
302      that it finds in the *current* directory when searching for files.
303      Soft-links found in any other source directories will still work as
304      they did before.
305    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
306      a C routine to unlimit the stack size
307    o mnc-ify pkg/aim snapshot vars
308    o mnc-ify pkg/land as requested by Daniel
309    o various changes to mnc including:
310      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
311      - output can now be grouped so that all files within a group
312          change the ITER portion of their names in lock-step together
313      - can now read ("global") PER-FACE (in addition to PER-TILE) files
314          and works with both EXCH1 and EXCH2 (but needs more testing)
315      - writing works for all verification test cases w/ g77 on Linux
316    
317    checkpoint57r_post
318    o make MNC variable initialization happen earlier
319    o add diagnostics for (almost) each term of the momentum Eq.
320    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
321    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
322    o remove MINIMAL_TAVE_OUTPUT option ;
323      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
324    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
325      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
326    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
327    o add time-dependent SST, SSS control
328    o cost terms in ecco/ modularized (new cost_generic.F)
329    o cost_averages routines are modularized (new cost_averagesgeneric.F)
330    o new infrastructure for seaice model vs. obs misfits in seaice/
331      * driver from the_main_loop.F is seaice_cost_driver.F
332      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
333      * gradient check in Exp. 6a of natl_box_adjoint/
334    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
335      (see README file)
336    
337    checkpoint57q_post
338    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
339    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
340      - bug was reported by Jean-Michel and Ian Fenty
341    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
342      update exp. cpl_aim+ocn output.
343    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
344      Needed for high-res. runs with large global files
345      to be able to limit tapelev size
346    o Changed some tests for adjoint:
347      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
348      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
349      * global_ocean.90x40x15/ back to default 3-level checkpointing
350    o Modifications to enable scripted COMMON to MODULE conversion
351      * verification/OpenAD/code/ has necessary scripts and description;
352      * converts, compiles and runs successfully;
353    
354    checkpoint57p_post
355    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
356    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
357      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
358    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
359    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
360      (was already the case for dissipation with mom_vecinv,
361       and also the case for grad.PhiHyd when staggered-timeStep)
362      This will allow to put dissipation out-off the AB time-stepping.
363     Unfortunately, affects truncation error. Update output of exp. that "fails"
364      (cg2d matching number) and leave the others for later: front_relax(10),
365      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
366      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
367    
368    checkpoint57o_post
369    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
370      (2) its ready to be documented during the 20050801 DocFest
371    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
372      for ideal_2D_oce and lab_sea on linux_ia32_g77
373    o set to #undef CTRL_SET_OLD_MAXCVARS_30
374      in global1x1_tot/code_seaice_adj to access indices 32, 33
375      (worth another tag)
376    
377    checkpoint57n_post
378    o adding precip control xx_precip 32
379    o adding swflux control xx_swflux 33
380    o Replacing 10 forcing penalty cost routines by 1 generic.
381    o Implementing partitioning in time-mean and variable adjustment
382      for atmos. state.
383    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
384  o in natl_box_adjoint:  o in natl_box_adjoint:
385    * updated: results_bulk/    * updated exp 1 to 10
386    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
387    o updated global1x1/*_seaice_adj/
388      to incorporate latest changes
389    o enable useSingleCpuIO for mdsio vector routines
390      (applies in particular to tapelev I/O)
391    o removed inefficient K-loop in all active_file*control*.F
392    
393  checkpoint57m_post  checkpoint57m_post
394  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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