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revision 1.1521 by mlosch, Tue Oct 25 15:24:54 2011 UTC revision 1.1569 by jmc, Tue Jan 3 18:11:55 2012 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/exf:
8      - change masking flags definition (no longer "parameter"), put them in
9        common block and set them in S/R EXF_INIT_FIXED.
10      - change recognized masking flag from s,u,v to c,w,s since the mask
11        to use (maskC,W,S) depends on position on model grid and has little to
12        do with scalar/vector difference; fix masking if using P-coordinates.
13      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
14        and update results of exp. global_with_exf (x2).
15      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
16    o pkg/obcs
17      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
18    o pkg/exf (interpolation):
19      - assume periodicity in X only if input field cover full longitude range.
20      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
21        and should vectorise).
22      - fix input lat of the 2 added row (in case we provide N.pole data).
23    
24    checkpoint63h (2011/12/30)
25    o pkg/seaice:
26      - change declaration of UVM from _RL to _RS in order to get B-grid
27        uIce,vIce monitor when _RS = real*4
28    o pkg/offline:
29      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
30      - compute vertical velocity if not read from file (switch on exactConserv
31        & staggerTimeStep);
32      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
33    o verification:
34      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
35        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
36        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
37      - update output of exp. global_ocean.cs32x15.viscA4 after changing
38        grid-file angles (used here for coriolis-3d);
39      - remove (or gzip) few files not needed to run fizhi-cs experiments.
40    o pkg/exf (vector interpolation):
41      - rotate vector component toward local grid-axis orientation using grid-angles
42        (stored in GRID.h) instead of locally computed rotation angle; keep old code
43        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
44    o pkg/seaice:
45      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
46        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
47    o pkg/PKG_OPTIONS.h files:
48      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
49        outside of the #ifdef ALLOW_THISPKG / #endif block.
50      - update verification/*/code/PKG_OPTIONS.h files.
51    o add a verification experiment (offline_exf_seaice/input.seaice) that test
52      the B-grid LSOR solver
53    o pkg/seaice: sort out emissivity and long wave radiation step 2:
54      - add emissivity for snow and ice as new run-time parameters
55        (unfortunately) that default to the corresponding exf values; this
56        changes results in most verification experiments so that for backward
57        compatibility these parameter have to be set explicitly to inconsistent
58        values (ugly);
59      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
60        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
61        until we agree how to handle this bug properly
62    o pkg/exf (interpolation):
63      - add a set of run-time param ({inputfield}_interpMethod), one for
64        each interpolated input field, to select the interpolation method
65        with a value of zero switching off the interpolation;
66      - print interpolation parameters to standard output;
67      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
68        (to use instead runoff_interpMethod=0 in data.exf).
69      - simplify default setting of interpolation parameters (for all fields,
70        set position to match model grid cell-center position, leading to trivial
71        interpolation in case of regular Lat-Lon grid) and fix for the case of
72        non-uniform delY.
73    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
74       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
75       this factor is absolutely required, because the lw exitance (= out-going
76       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
77       where the reflectivity rho = 1-emissivity for conservation reasons. Once
78       this is established, we can remove the CPP-Flag (if we want to).
79    o pkg/seaice:
80      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
81        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
82      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
83        what the name implies (and not emissivity*BoltzmannConstant), this means
84        the old default value of 5.5e-8 now means
85        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
86        S/R exf_readparms
87      - FV-discretization of the B-grid LSOR solver, turn on with
88        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
89        of the calling routine dynsolver, so that B and C-grid code look a
90        little more alike.
91      - fix index bugs in ostres.F (B-grid code)
92    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
93    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
94      default for SEAICE_emissivity, if useEXF; requires setting a wrong
95      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
96      backward compatiblity
97    o model/src: use sigmaR in calc_ivdc
98    
99    checkpoint63g (2011/12/16)
100    o pkg/seaice/seaice_growth.F:
101      fix heat conservation of the coupled ocean-seaice system.
102      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
103      solid vs liquid water treatment is resolved via QNET.
104    o pkg/seaice/seaice_growth.F:
105      add missing term for sublimation in saltFlux, which was breaking conservation.
106    o pkg/seaice/seaice_model.F:
107      Remove this patholigical case treatment in evolution branch,
108      where it is un-necessary and breaks conservation.
109      Update global_ocean.cs32x15/results accordingly for
110      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
111    o model/src:
112      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
113      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
114    o pkg/obcs:
115      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
116      tendency for temperature and salinity that is then applied to update
117      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
118      horizontal advection and diffusion contributions on the boundary (in
119      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
120      removing the mask in S/R timestep_tracer. The advantage of this approach is
121      that the updated tracer values include contributions from the surface
122      forcing and vertical diffusion.
123      This modification changes exp4.stevens because of vertical diffusion.
124    o model/src:
125      change non-curvilinear grid setting to also work with exch2 + blank tiles:
126      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
127        face dimensions.
128      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
129        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
130        and INI_SPHERICAL_POLAR_GRID.
131      change test-experiment global_ocean.90x40x15:
132      - split the domain in many more tiles (9x4 tiles of 10x10 each);
133      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
134      - update results of both test (std & dwnslp).
135    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
136       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
137    o model/src:
138      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
139        and fix initialisation when using sigma-coords.
140    o model/src:
141     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
142       to their current value at the beginning of forward_step.F": add a new run-time
143       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
144     - set doResetHFactors=T in the following test exp:
145        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
146        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
147        and tutorial_global_oce_in_p (nonLinFS in p)
148    o pkg/ecco
149      - added IES cost term
150    o verification/advect_xz
151      - scale down the depth by 1/100 (from 200 km to just 2.km)
152      - add secondary test using divergent flow, r-star and implicit vertical advection.
153      - add note (check_conserve_TS.txt) and matlab script to check global
154        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
155    o pkg/rbcs:
156      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
157    o pkg/obcs (Stevens BCs):
158      - fix various problems in the phase speed computations of the Stevens
159        boundary conditions:
160        - sign error for western and southern boundaries,
161        - time tendencies were underestimated by factor of dTracerLev and some just
162          zero (for multidim advection schemes) -> now estimate time tendencies
163          from difference between previous (n) time level and the one before (n-1);
164          this requires storing a field per tracer per boundary, also in the pickup
165          files.
166        - replace deltaTmom in cflMer/Zon computation with dTracerLev
167        - set default phase velocity to cflMer/Zon
168      - update verification experiment exp4.stevens
169    o pkg/generic_advdiff (implicit_r):
170      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
171        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
172      - fix implicit vertical diffusion or advection with NonLin FreeSurf
173        (was using current recip_hFacC instead of future recip_hFacC): set future
174        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
175        solver S/R ;
176      - fill diagnostics of vertical advective fluxes (computed from tendency)
177        when using implicit vert. advection;
178      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
179         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
180         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
181         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
182    o pkg/diagnostics:
183      - add diags for T & S tendency which goes through Adams-Bashforth.
184    
185    checkpoint63f (2011/11/30)
186    o pkg/obcs/obcs_calc_stevens.F:
187      - join some loops to reduce number of if-statements
188      - fix a bug in code for northern and southern boundaries.
189    o pkg/seaice/seaice_init_varia.F
190      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
191        caused zero ice-velocities for the B-grid code
192    o pkg/seaice/seaice_init_fixed.F
193      - fix a bug in the initialisation of the second metric terms
194        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
195      - this affects all seaice configurations with useCurviLinearGrid = .true.
196        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
197        = .true. (default)
198      - the only verification experiment affected is global_ocean.cs32x15:
199        icedyn, seaice, and seaice_dynmix (AD)
200    o pkg/thsice/thsice_diagnostics_state.F
201      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
202        not contain garbage that can lead to surprises in diagstats_calc.F
203    o model/src:
204      - move bi,bj loops inside INTEGR_CONTINUITY ;
205      - call INTEGR_CONTINUITY directly from forward_step.F
206        (previously called from momentum_correction_step.F)
207      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
208        forward_step.F and pkg/ecco/the_main_loop.F
209    o model/src/do_oceanic_phys.F:
210      - reset addMass to zero only if useICEFRONT ;
211      - separated k-loop for rhoInSitu calculation ;
212      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
213        and at constant T,S (= WdRHOdP);
214      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
215        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
216        transport of locally-referenced potential density);
217        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
218    o gluemnc:
219      - replace ncrcat with ncks when adding variables to *.glob.nc
220      - change the way variables without record dimensions are handled so that
221        files that have variables with and without record variables can be glued:
222        add a record dimension with a new unique name to be able to differentiate
223        between variable with and without a-prior record dimensions. Remove
224        this record dimension before adding the variable to the *.glob.nc file.
225        This procedure automatically works also for grid.*.nc files that do not
226        have any record dimension.
227    o verification/cpl_aim+ocn:
228      - generate new reference output on baudelaire (gfortran, mpich2) (previously
229        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
230    o pkg/obcs/obcs_calc_stevens.F:
231      - add code for northern and southern boundaries.
232      - reorder some loops to save some operations and so that drFBar can be scalar
233    o model/src:
234      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
235        truncation) and add diagnostics for Adams-Bashforth tendency increment.
236      - update test-exp. AD output:
237        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
238      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
239        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
240        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
241        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
242        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
243        tutorial_plume_on_slope.
244    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
245      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
246      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
247      does not even come with an F77 compiler anymore, this should not be
248      a limitation
249    
250    checkpoint63e (2011/11/06)
251    o pkg/seaice adjoint of LSR:
252      - substantially rework STORE dirs.
253      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
254        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
255        and only perform SOLV_MAX_FIXED adjoint iters.
256        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
257        always goes to same record, meaning that the last forward field will be
258        the one used in the adjoint - an approximation.
259      - now produces non-zero LSR-related gradients, and acceptable gradients for
260        An's zonal (x-z) test case (to be checked in)
261      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
262        (but these are screwed up by the thermodynamics in the first place);
263        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
264        output_adm.txt also reflects changes to seaice_lsr
265      - global_ocean.cs32x15:
266        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
267          (output_adm.seaice.txt was updated)
268        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
269          (output_adm.seaice_dynmix.txt)
270    o test-exp. exp4+stevens:
271      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
272    o pkg/seaice (lsr solver):
273      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
274        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
275      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
276      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
277        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
278      - compute (with new S/R) and print initial (+ free-driff sol. if available)
279        and final residual of linearised system.
280    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
281      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
282  o pkg/obcs: Stevens BCs (still only for east and west)  o pkg/obcs: Stevens BCs (still only for east and west)
283    - fix Stevens BCs by using intermediate velocities of previous    - fix Stevens BCs by using intermediate velocities of previous
284      time step as "baroclinic" contribution rather velocity of one grid cell      time step as "baroclinic" contribution rather velocity of one grid cell
285      inside the boundaries; more consistent but makes the entire treatment      inside the boundaries; more consistent but makes the entire treatment
286      more complicated, requires new pickup files and two new S/Rs:      more complicated, requires new pickup files and two new S/Rs:
287      obcs_copy_uv_n and obcs_save_uv_n      obcs_copy_uv_n and obcs_save_uv_n
288      keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY      keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
289      (undefined by default)      (undefined by default)
290    - silently move computation of some grid factors into separate loops to    - silently move computation of some grid factors into separate loops to
291      save some recomputations      save some recomputations
292    - add a hack for non-linear free surface    - add a hack for non-linear free surface
293    - add a verification experiment to exp4 that tests this code    - add a verification experiment to exp4 that tests this code

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