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revision 1.1502 by jmc, Wed Sep 21 16:29:49 2011 UTC revision 1.1554 by mlosch, Mon Dec 19 16:33:53 2011 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice:
8      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
9        what the name implies (and not emissivity*BoltzmannConstant), this means
10        the old default value of 5.5e-8 now means
11        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
12        S/R exf_readparms
13      - FV-discretization of the B-grid LSOR solver, turn on with
14      SEAICE_LSRBNEW. This new solver also involves a slight re-organization
15      of the calling routine dynsolver, so that B and C-grid code look a
16      little more alike.
17    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
18    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
19      default for SEAICE_emissivity, if useEXF; requires setting a wrong
20      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
21      backward compatiblity
22    o model/src: use sigmaR in calc_ivdc
23    
24    checkpoint63g (2011/12/16)
25    o pkg/seaice/seaice_growth.F:
26      fix heat conservation of the coupled ocean-seaice system.
27      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
28      solid vs liquid water treatment is resolved via QNET.
29    o pkg/seaice/seaice_growth.F:
30      add missing term for sublimation in saltFlux, which was breaking conservation.
31    o pkg/seaice/seaice_model.F:
32      Remove this patholigical case treatment in evolution branch,
33      where it is un-necessary and breaks conservation.
34      Update global_ocean.cs32x15/results accordingly for
35      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
36    o model/src:
37      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
38      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
39    o pkg/obcs:
40      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
41      tendency for temperature and salinity that is then applied to update
42      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
43      horizontal advection and diffusion contributions on the boundary (in
44      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
45      removing the mask in S/R timestep_tracer. The advantage of this approach is
46      that the updated tracer values include contributions from the surface
47      forcing and vertical diffusion.
48      This modification changes exp4.stevens because of vertical diffusion.
49    o model/src:
50      change non-curvilinear grid setting to also work with exch2 + blank tiles:
51      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
52        face dimensions.
53      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
54        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
55        and INI_SPHERICAL_POLAR_GRID.
56      change test-experiment global_ocean.90x40x15:
57      - split the domain in many more tiles (9x4 tiles of 10x10 each);
58      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
59      - update results of both test (std & dwnslp).
60    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
61       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
62    o model/src:
63      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
64        and fix initialisation when using sigma-coords.
65    o model/src:
66     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
67       to their current value at the beginning of forward_step.F": add a new run-time
68       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
69     - set doResetHFactors=T in the following test exp:
70        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
71        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
72        and tutorial_global_oce_in_p (nonLinFS in p)
73    o pkg/ecco
74      - added IES cost term
75    o verification/advect_xz
76      - scale down the depth by 1/100 (from 200 km to just 2.km)
77      - add secondary test using divergent flow, r-star and implicit vertical advection.
78      - add note (check_conserve_TS.txt) and matlab script to check global
79        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
80    o pkg/rbcs:
81      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
82    o pkg/obcs (Stevens BCs):
83      - fix various problems in the phase speed computations of the Stevens
84        boundary conditions:
85        - sign error for western and southern boundaries,
86        - time tendencies were underestimated by factor of dTracerLev and some just
87          zero (for multidim advection schemes) -> now estimate time tendencies
88          from difference between previous (n) time level and the one before (n-1);
89          this requires storing a field per tracer per boundary, also in the pickup
90          files.
91        - replace deltaTmom in cflMer/Zon computation with dTracerLev
92        - set default phase velocity to cflMer/Zon
93      - update verification experiment exp4.stevens
94    o pkg/generic_advdiff (implicit_r):
95      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
96        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
97      - fix implicit vertical diffusion or advection with NonLin FreeSurf
98        (was using current recip_hFacC instead of future recip_hFacC): set future
99        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
100        solver S/R ;
101      - fill diagnostics of vertical advective fluxes (computed from tendency)
102        when using implicit vert. advection;
103      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
104         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
105         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
106         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
107    o pkg/diagnostics:
108      - add diags for T & S tendency which goes through Adams-Bashforth.
109    
110    checkpoint63f (2011/11/30)
111    o pkg/obcs/obcs_calc_stevens.F:
112      - join some loops to reduce number of if-statements
113      - fix a bug in code for northern and southern boundaries.
114    o pkg/seaice/seaice_init_varia.F
115      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
116        caused zero ice-velocities for the B-grid code
117    o pkg/seaice/seaice_init_fixed.F
118      - fix a bug in the initialisation of the second metric terms
119        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
120      - this affects all seaice configurations with useCurviLinearGrid = .true.
121        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
122        = .true. (default)
123      - the only verification experiment affected is global_ocean.cs32x15:
124        icedyn, seaice, and seaice_dynmix (AD)
125    o pkg/thsice/thsice_diagnostics_state.F
126      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
127        not contain garbage that can lead to surprises in diagstats_calc.F
128    o model/src:
129      - move bi,bj loops inside INTEGR_CONTINUITY ;
130      - call INTEGR_CONTINUITY directly from forward_step.F
131        (previously called from momentum_correction_step.F)
132      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
133        forward_step.F and pkg/ecco/the_main_loop.F
134    o model/src/do_oceanic_phys.F:
135      - reset addMass to zero only if useICEFRONT ;
136      - separated k-loop for rhoInSitu calculation ;
137      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
138        and at constant T,S (= WdRHOdP);
139      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
140        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
141        transport of locally-referenced potential density);
142        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
143    o gluemnc:
144      - replace ncrcat with ncks when adding variables to *.glob.nc
145      - change the way variables without record dimensions are handled so that
146        files that have variables with and without record variables can be glued:
147        add a record dimension with a new unique name to be able to differentiate
148        between variable with and without a-prior record dimensions. Remove
149        this record dimension before adding the variable to the *.glob.nc file.
150        This procedure automatically works also for grid.*.nc files that do not
151        have any record dimension.
152    o verification/cpl_aim+ocn:
153      - generate new reference output on baudelaire (gfortran, mpich2) (previously
154        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
155    o pkg/obcs/obcs_calc_stevens.F:
156      - add code for northern and southern boundaries.
157      - reorder some loops to save some operations and so that drFBar can be scalar
158    o model/src:
159      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
160        truncation) and add diagnostics for Adams-Bashforth tendency increment.
161      - update test-exp. AD output:
162        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
163      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
164        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
165        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
166        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
167        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
168        tutorial_plume_on_slope.
169    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
170      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
171      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
172      does not even come with an F77 compiler anymore, this should not be
173      a limitation
174    
175    checkpoint63e (2011/11/06)
176    o pkg/seaice adjoint of LSR:
177      - substantially rework STORE dirs.
178      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
179        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
180        and only perform SOLV_MAX_FIXED adjoint iters.
181        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
182        always goes to same record, meaning that the last forward field will be
183        the one used in the adjoint - an approximation.
184      - now produces non-zero LSR-related gradients, and acceptable gradients for
185        An's zonal (x-z) test case (to be checked in)
186      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
187        (but these are screwed up by the thermodynamics in the first place);
188        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
189        output_adm.txt also reflects changes to seaice_lsr
190      - global_ocean.cs32x15:
191        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
192          (output_adm.seaice.txt was updated)
193        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
194          (output_adm.seaice_dynmix.txt)
195    o test-exp. exp4+stevens:
196      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
197    o pkg/seaice (lsr solver):
198      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
199        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
200      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
201      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
202        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
203      - compute (with new S/R) and print initial (+ free-driff sol. if available)
204        and final residual of linearised system.
205    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
206      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
207    o pkg/obcs: Stevens BCs (still only for east and west)
208      - fix Stevens BCs by using intermediate velocities of previous
209        time step as "baroclinic" contribution rather velocity of one grid cell
210        inside the boundaries; more consistent but makes the entire treatment
211        more complicated, requires new pickup files and two new S/Rs:
212        obcs_copy_uv_n and obcs_save_uv_n
213        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
214        (undefined by default)
215      - silently move computation of some grid factors into separate loops to
216        save some recomputations
217      - add a hack for non-linear free surface
218      - add a verification experiment to exp4 that tests this code
219    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
220    
221    checkpoint63d (2011/10/25)
222    o pkg/obcs + seaice-dynamics:
223      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
224        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
225        values (consistent with an implicit method).
226      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
227        return to older implementation (same results as before); note that none of
228        the "experimental" OBCS_SEAICE options are implemented in the new version.
229      - switch test exp. seaice_obcs to use new version (update output).
230    o pkg/seaice:
231      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
232      - add parenthesis in Water-Ice drag calculations (evp & lsr);
233      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
234        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
235      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
236        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
237    o pkg/layers:
238      - Include potential density as new coordinate (Thanks to David Munday)
239    o pkg/dic:
240      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
241        carbonate computation/output to CALC_PCO2_APPROX
242    o pkg/generic_advdiff
243      - make TAF generate code that vectorizes:
244        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
245    o model/src:
246      - improve vectorization also for adjoint code of
247        solve_tridiagonal and solve_pentadiagonal. As this requires up to
248        5 new 3D-fields, this code is only turned on for the combination of
249        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
250        for singular matrix check (only for TARGET_NEC_SX).
251      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
252        ALLOW_AUTODIFF. This flag now needs to be set outside of
253        solve_tri/pentadiagonal.F
254    o pkg/exf:
255      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
256        optional namelist EXF_NML_OBCS).
257      - add many debug-print (to trace down where pkg/cal error msg comes from)
258    o pkg/mom_vecinv/mom_vi_hdissip.F
259      - rearrange loops so that vectorization is improved and in particular
260        the adjoint routine vectorizes. The code is a little longer now, but I
261        think easier to read.
262        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
263    o pkg/seaice:
264      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
265    o pkg/exch2:
266      - alternative code (without tile x tile matrix) for cumulated (global) sum;
267        used as default; keep using matrix version in adjustment.cs-32x32x1.
268    o tools/build_options:
269      - after merging some MPI and/or multi-threads specific optfiles so that
270        the modified default optfile support both built (using genmake2 -mpi
271        for the MPI built, using genmake2 -omp for OpenMP built),
272        move now obsolete optfiles to tools/build_options/unsupported/
273       (add copy of email sent to support list in doc/optfiles_changes.txt)
274    
275    checkpoint63c (2011/09/28)
276    o pkg/ebm:
277      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
278        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
279    o pkg/seaice (SItracer pickup)
280    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
281      To be done:
282      - thorough testing of missing fields in S/R seaice_read_pickup
283      - thorough matching between generic tracers and specific fields used
284        (e.g. volume-weighted age, area-weighted age, salinity, ...)
285    o pkg/grdchk:
286      - all procs calculate and print finite-difference gradient (for testreport)
287      - change description output used by testreport;
288      - AD testing: also compare and report Finite-difference gradient;
289        => update all output_adm*.txt
290    o test exp. global_ocean_ebm:
291      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
292        and turn on exactConserve; update (fwd) output.
293    o pkg/seaice (LSR):
294      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
295      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
296        * identical results with non-CS topology (but save up to half of EXCH calls)
297        * no much changes in cs-32 verification tests since no ice at face edges
298         (differences due to convergence criteria, since nb of iterations changed)
299        * expect some differences on lat-lon-cap grid.
300        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
301  o pkg/exch2:  o pkg/exch2:
302    - add new CPP option to disable Cumul-Sum matrix (to save storage when using    - add new CPP option to disable Cumul-Sum matrix (to save storage when using
303      many tiles); until alternative coding is added, just add a stop.      many tiles); until alternative coding is added, just add a stop.

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