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revision 1.1534 by jmc, Sun Nov 13 04:03:54 2011 UTC revision 1.1589 by gforget, Fri Feb 3 15:21:38 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/seaice:
8      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
9    o pkg/seaice:
10      - seaice_solve4temp.F (keeping results unchanged):
11        * add 2 future run-time params to select which saturation vapor pressure
12          formula is used and how post-iteration fluxes are set.
13          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
14        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
15          the linearized expression to stay consistent with tsurf finding.
16      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
17        can be < 0.
18    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
19      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
20        conductive heat flux F_c , and add it explicitly when updating tsurf as
21        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
22        so that now F_ia has a consistent meaning through the entire routine.
23        This causes differences at truncation level: update output of fwd exp.
24        global_ocean.cs32x15.seaice.
25    o pkg/seaice:
26      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
27        of arrays, sign/direction of fluxes; no effect on results.
28      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
29        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
30        note: this should have been done before changing celsius2K default.
31      - to keep results unchanged, add back old value of celsius2K in verification
32        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
33      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
34        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
35        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
36        freezing temp is consistent with value in seaice_growth.F ; this causes
37        differences at machine truncation level: update lab_sea AD output (3/4).
38    o pkg/seaice:
39      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
40        and climsst/sss even when using seaice (to prevent calculation that might
41        use SST on land); does not affect any verification exp.
42      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
43        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
44    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
45      over land (non-legacy code)
46    o vectorize salt_plume package:
47      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
48      - this code computes plumebk everywhere (also over land), thus requires
49        code to avoid divisions by zero and catch the case of kLev=Nr.
50      - efficiency of salt_plume_frac is still sub-optimal
51    o tools (genmake2):
52      - fix makefile NAME specification (option: -makefile NAME) by adding
53        "-f $MAKEFILE" in few places where it was missing including makedepend
54        command (contribution from Paul).
55    
56    checkpoint63i (2012/01/24)
57    o model/src:
58      - add factorized versions of some EOS code to find_rho.F,
59        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
60    o model/src:
61      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
62      - change default celsius2K from 273.16 to 273.15
63      - to keep results unchanged, add back old value of celsius2K in verification
64        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
65         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
66    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
67      to make TAF generate vectorizable code
68    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
69       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
70       have flags that do this more efficiently.
71    o pkg/diagnostics/diagstats_calc.F
72      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
73    o pkg/obcs (with exch2):
74      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
75        and remove code (in obcs_readparms.F) which was based on EXCH of indices
76        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
77    o pkg/exf and seaice exp:
78      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
79        so that switching off area & heff advection flags does not affect results.
80      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
81      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
82        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
83        results of verification experiments: 1D_ocean_ice_column(fwd),
84        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
85        and offline_exf_seaice (all 4).
86    o pkg/seaice:
87      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
88        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
89      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
90        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
91        not multi-dim advection;
92      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
93        SHORTWAVE_HEATING #undef.
94    o optim: make Makefile more robust (?)
95    o pkg/obcs:
96      * fix treatment of obcs_read_pickup for TAF
97    o pkg/shelfice:
98      * add missing initialisation of num_shifwflx
99      * new adjoint verification exp. for isomip
100      * change Prandtl and Schmidt numbers from generic formulations
101        (in terms of model diffus. and visc.) to separate runtime
102        parameters, with Holland and Jenkins (1999) default values.
103    o pkg/exf (interpolation):
104      - extended input field (2 rows) near the N & S poles:
105        * fill in with the symetric value (when even Nb of data in longitude)
106        * add average value at the poles only for scalar quantities ; for vector
107          component interpolation, skip the averaging and keep duplicated values,
108          unless the 2 components have same location (uvInterp=T) in which case
109          interpolate the 2 components together using S/R EXF_INTERP_UV.
110      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
111        together: this allows to account properly for local orientation when
112        averaging at N & S pole.
113      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
114        exf-interpolation near N & S poles. Undef by default.
115      - add debug check/print on 1rst iter if debugLevel >=2.
116    o pkg/exf:
117      - change masking flags definition (no longer "parameter"), put them in
118        common block and set them in S/R EXF_INIT_FIXED.
119      - change recognized masking flag from s,u,v to c,w,s since the mask
120        to use (maskC,W,S) depends on position on model grid and has little to
121        do with scalar/vector difference; fix masking if using P-coordinates.
122      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
123        and update results of exp. global_with_exf (x2).
124      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
125    o pkg/obcs
126      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
127    o pkg/exf (interpolation):
128      - assume periodicity in X only if input field cover full longitude range.
129      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
130        and should vectorise).
131      - fix input lat of the 2 added row (in case we provide N.pole data).
132    
133    checkpoint63h (2011/12/30)
134    o pkg/seaice:
135      - change declaration of UVM from _RL to _RS in order to get B-grid
136        uIce,vIce monitor when _RS = real*4
137    o pkg/offline:
138      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
139      - compute vertical velocity if not read from file (switch on exactConserv
140        & staggerTimeStep);
141      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
142    o verification:
143      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
144        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
145        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
146      - update output of exp. global_ocean.cs32x15.viscA4 after changing
147        grid-file angles (used here for coriolis-3d);
148      - remove (or gzip) few files not needed to run fizhi-cs experiments.
149    o pkg/exf (vector interpolation):
150      - rotate vector component toward local grid-axis orientation using grid-angles
151        (stored in GRID.h) instead of locally computed rotation angle; keep old code
152        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
153    o pkg/seaice:
154      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
155        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
156    o pkg/PKG_OPTIONS.h files:
157      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
158        outside of the #ifdef ALLOW_THISPKG / #endif block.
159      - update verification/*/code/PKG_OPTIONS.h files.
160    o add a verification experiment (offline_exf_seaice/input.seaice) that test
161      the B-grid LSOR solver
162    o pkg/seaice: sort out emissivity and long wave radiation step 2:
163      - add emissivity for snow and ice as new run-time parameters
164        (unfortunately) that default to the corresponding exf values; this
165        changes results in most verification experiments so that for backward
166        compatibility these parameter have to be set explicitly to inconsistent
167        values (ugly);
168      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
169        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
170        until we agree how to handle this bug properly
171    o pkg/exf (interpolation):
172      - add a set of run-time param ({inputfield}_interpMethod), one for
173        each interpolated input field, to select the interpolation method
174        with a value of zero switching off the interpolation;
175      - print interpolation parameters to standard output;
176      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
177        (to use instead runoff_interpMethod=0 in data.exf).
178      - simplify default setting of interpolation parameters (for all fields,
179        set position to match model grid cell-center position, leading to trivial
180        interpolation in case of regular Lat-Lon grid) and fix for the case of
181        non-uniform delY.
182    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
183       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
184       this factor is absolutely required, because the lw exitance (= out-going
185       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
186       where the reflectivity rho = 1-emissivity for conservation reasons. Once
187       this is established, we can remove the CPP-Flag (if we want to).
188    o pkg/seaice:
189      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
190        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
191      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
192        what the name implies (and not emissivity*BoltzmannConstant), this means
193        the old default value of 5.5e-8 now means
194        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
195        S/R exf_readparms
196      - FV-discretization of the B-grid LSOR solver, turn on with
197        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
198        of the calling routine dynsolver, so that B and C-grid code look a
199        little more alike.
200      - fix index bugs in ostres.F (B-grid code)
201    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
202    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
203      default for SEAICE_emissivity, if useEXF; requires setting a wrong
204      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
205      backward compatiblity
206    o model/src: use sigmaR in calc_ivdc
207    
208    checkpoint63g (2011/12/16)
209    o pkg/seaice/seaice_growth.F:
210      fix heat conservation of the coupled ocean-seaice system.
211      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
212      solid vs liquid water treatment is resolved via QNET.
213    o pkg/seaice/seaice_growth.F:
214      add missing term for sublimation in saltFlux, which was breaking conservation.
215    o pkg/seaice/seaice_model.F:
216      Remove this patholigical case treatment in evolution branch,
217      where it is un-necessary and breaks conservation.
218      Update global_ocean.cs32x15/results accordingly for
219      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
220    o model/src:
221      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
222      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
223    o pkg/obcs:
224      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
225      tendency for temperature and salinity that is then applied to update
226      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
227      horizontal advection and diffusion contributions on the boundary (in
228      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
229      removing the mask in S/R timestep_tracer. The advantage of this approach is
230      that the updated tracer values include contributions from the surface
231      forcing and vertical diffusion.
232      This modification changes exp4.stevens because of vertical diffusion.
233    o model/src:
234      change non-curvilinear grid setting to also work with exch2 + blank tiles:
235      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
236        face dimensions.
237      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
238        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
239        and INI_SPHERICAL_POLAR_GRID.
240      change test-experiment global_ocean.90x40x15:
241      - split the domain in many more tiles (9x4 tiles of 10x10 each);
242      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
243      - update results of both test (std & dwnslp).
244    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
245       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
246    o model/src:
247      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
248        and fix initialisation when using sigma-coords.
249    o model/src:
250     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
251       to their current value at the beginning of forward_step.F": add a new run-time
252       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
253     - set doResetHFactors=T in the following test exp:
254        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
255        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
256        and tutorial_global_oce_in_p (nonLinFS in p)
257    o pkg/ecco
258      - added IES cost term
259    o verification/advect_xz
260      - scale down the depth by 1/100 (from 200 km to just 2.km)
261      - add secondary test using divergent flow, r-star and implicit vertical advection.
262      - add note (check_conserve_TS.txt) and matlab script to check global
263        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
264    o pkg/rbcs:
265      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
266    o pkg/obcs (Stevens BCs):
267      - fix various problems in the phase speed computations of the Stevens
268        boundary conditions:
269        - sign error for western and southern boundaries,
270        - time tendencies were underestimated by factor of dTracerLev and some just
271          zero (for multidim advection schemes) -> now estimate time tendencies
272          from difference between previous (n) time level and the one before (n-1);
273          this requires storing a field per tracer per boundary, also in the pickup
274          files.
275        - replace deltaTmom in cflMer/Zon computation with dTracerLev
276        - set default phase velocity to cflMer/Zon
277      - update verification experiment exp4.stevens
278    o pkg/generic_advdiff (implicit_r):
279      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
280        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
281      - fix implicit vertical diffusion or advection with NonLin FreeSurf
282        (was using current recip_hFacC instead of future recip_hFacC): set future
283        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
284        solver S/R ;
285      - fill diagnostics of vertical advective fluxes (computed from tendency)
286        when using implicit vert. advection;
287      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
288         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
289         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
290         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
291    o pkg/diagnostics:
292      - add diags for T & S tendency which goes through Adams-Bashforth.
293    
294    checkpoint63f (2011/11/30)
295    o pkg/obcs/obcs_calc_stevens.F:
296      - join some loops to reduce number of if-statements
297      - fix a bug in code for northern and southern boundaries.
298    o pkg/seaice/seaice_init_varia.F
299      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
300        caused zero ice-velocities for the B-grid code
301    o pkg/seaice/seaice_init_fixed.F
302      - fix a bug in the initialisation of the second metric terms
303        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
304      - this affects all seaice configurations with useCurviLinearGrid = .true.
305        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
306        = .true. (default)
307      - the only verification experiment affected is global_ocean.cs32x15:
308        icedyn, seaice, and seaice_dynmix (AD)
309    o pkg/thsice/thsice_diagnostics_state.F
310      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
311        not contain garbage that can lead to surprises in diagstats_calc.F
312  o model/src:  o model/src:
313    - move bi,bj loops inside INTEGR_CONTINUITY ;    - move bi,bj loops inside INTEGR_CONTINUITY ;
314    - call INTEGR_CONTINUITY directly from forward_step.F    - call INTEGR_CONTINUITY directly from forward_step.F

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