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revision 1.1517 by jmc, Sat Oct 22 14:11:04 2011 UTC revision 1.1600 by gforget, Thu Feb 16 01:40:04 2012 UTC
# Line 3  $Name$ Line 3  $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    o pkg/seaice: overhaul of seaice_summary.F after jan 2012 clean-up of seaice_growth.F etc.
7    o pkg/seaice SItracer :  added run time params, and allow coupling to ocn salinity.
8    o pkg/seaice: remove (almost) all divisions by constants within loops
9      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
10      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
11      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
12      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
13    o pkg/seaice :
14      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula.EQ.
15      1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
16      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
17      - add permanent SItflux diag that corresponds to TFLUX but includes
18      ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
19      - allow activation/testing of a fix for suspected missing term in
20      ocn-ice heat budget (to be confirmed). To test this, you want to
21      undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
22      SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
23      - no change in results, fwd or ad.
24    o global_ocean.cs32x15/results: three changes following from the pkg/seaice commit below.
25      - switch to variable freezing point.
26           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
27      - bug fix : the sublimation term that was missing is now activated.
28           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
29      - bug fix : flooding sign term for SIsal0.NE.0.
30           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
31    o pkg/seaice:
32      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
33     is now the default, and the old default constant freezing point is recovered with
34     SEAICE_tempFrz0    = -1.96,
35     SEAICE_dTempFrz_dS = 0.,
36      - retire SEAICE_freeze that was the old way of specifycing the constant freezing point.
37      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
38      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
39     activated. To reproduce old results that had this bug define SEAICE_DISABLE_SUBLIM.
40      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
41     was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
42      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
43     seaice_growth r149 for legacy branch (no results change).
44      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code from I. Fenty).
45      - results did not change except for global_ocean.cs32x15, mostly due to the switch
46      to variable freezing point (see above item for detail).
47    o pkg/thsice:
48      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
49        seawater freezing in thsice_calc_thickn (not used).
50    o pkg/seaice: turbulent flux term specification via run time params.
51      - replace CPP switches with run time switches to facilitate testing
52      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX, GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
53      - added runtime parameter : SEAICEturbFluxFormula
54      - move Mcphee constants to SEAICE_PARAMS.h
55      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
56        SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply); remove
57        seaice_summary call (moved to seaice_init_fixed)
58      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
59        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
60      - seaice_summary.F : add missing report of read turbulent flux term set up (and SITRACER).
61      - seaice_check.F : check range; inform and stop if retired CPPs are used (incl. SEAICE_AGE).
62      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
63            CPP switch, same computation as before for the different options.
64      - change results at the truncation level.
65    o pkg/seaice:
66      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
67        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
68        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
69      - update verification/*/input*/data.seaice:
70        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
71        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
72        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
73        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
74    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
75      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
76        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
77        difference in results only due to machine truncation.
78      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
79        MaykutPolySatVap; keep MIN_LWDOWN.
80      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
81      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
82        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
83    o pkg/salt_plume:
84      - isolate saltPlumeFlux array exch into a specific S/R called from
85        do_oceanic_phys.F
86      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
87    o verification:
88      - move untested set-up to MITgcm_contrib/verification_other.
89    o pkg/seaice:
90      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
91    o pkg/seaice:
92      - seaice_solve4temp.F (keeping results unchanged):
93        * add 2 future run-time params to select which saturation vapor pressure
94          formula is used and how post-iteration fluxes are set.
95          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
96        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
97          the linearized expression to stay consistent with tsurf finding.
98      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
99        can be < 0.
100    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
101      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
102        conductive heat flux F_c , and add it explicitly when updating tsurf as
103        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
104        so that now F_ia has a consistent meaning through the entire routine.
105        This causes differences at truncation level: update output of fwd exp.
106        global_ocean.cs32x15.seaice.
107    o pkg/seaice:
108      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
109        of arrays, sign/direction of fluxes; no effect on results.
110      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
111        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
112        note: this should have been done before changing celsius2K default.
113      - to keep results unchanged, add back old value of celsius2K in verification
114        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
115      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
116        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
117        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
118        freezing temp is consistent with value in seaice_growth.F ; this causes
119        differences at machine truncation level: update lab_sea AD output (3/4).
120    o pkg/seaice:
121      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
122        and climsst/sss even when using seaice (to prevent calculation that might
123        use SST on land); does not affect any verification exp.
124      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
125        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
126    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
127      over land (non-legacy code)
128    o vectorize salt_plume package:
129      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
130      - this code computes plumebk everywhere (also over land), thus requires
131        code to avoid divisions by zero and catch the case of kLev=Nr.
132      - efficiency of salt_plume_frac is still sub-optimal
133    o tools (genmake2):
134      - fix makefile NAME specification (option: -makefile NAME) by adding
135        "-f $MAKEFILE" in few places where it was missing including makedepend
136        command (contribution from Paul).
137    
138    checkpoint63i (2012/01/24)
139    o model/src:
140      - add factorized versions of some EOS code to find_rho.F,
141        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
142    o model/src:
143      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
144      - change default celsius2K from 273.16 to 273.15
145      - to keep results unchanged, add back old value of celsius2K in verification
146        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
147         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
148    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
149      to make TAF generate vectorizable code
150    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
151       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
152       have flags that do this more efficiently.
153    o pkg/diagnostics/diagstats_calc.F
154      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
155    o pkg/obcs (with exch2):
156      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
157        and remove code (in obcs_readparms.F) which was based on EXCH of indices
158        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
159    o pkg/exf and seaice exp:
160      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
161        so that switching off area & heff advection flags does not affect results.
162      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
163      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
164        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
165        results of verification experiments: 1D_ocean_ice_column(fwd),
166        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
167        and offline_exf_seaice (all 4).
168    o pkg/seaice:
169      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
170        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
171      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
172        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
173        not multi-dim advection;
174      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
175        SHORTWAVE_HEATING #undef.
176    o optim: make Makefile more robust (?)
177    o pkg/obcs:
178      * fix treatment of obcs_read_pickup for TAF
179    o pkg/shelfice:
180      * add missing initialisation of num_shifwflx
181      * new adjoint verification exp. for isomip
182      * change Prandtl and Schmidt numbers from generic formulations
183        (in terms of model diffus. and visc.) to separate runtime
184        parameters, with Holland and Jenkins (1999) default values.
185    o pkg/exf (interpolation):
186      - extended input field (2 rows) near the N & S poles:
187        * fill in with the symetric value (when even Nb of data in longitude)
188        * add average value at the poles only for scalar quantities ; for vector
189          component interpolation, skip the averaging and keep duplicated values,
190          unless the 2 components have same location (uvInterp=T) in which case
191          interpolate the 2 components together using S/R EXF_INTERP_UV.
192      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
193        together: this allows to account properly for local orientation when
194        averaging at N & S pole.
195      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
196        exf-interpolation near N & S poles. Undef by default.
197      - add debug check/print on 1rst iter if debugLevel >=2.
198    o pkg/exf:
199      - change masking flags definition (no longer "parameter"), put them in
200        common block and set them in S/R EXF_INIT_FIXED.
201      - change recognized masking flag from s,u,v to c,w,s since the mask
202        to use (maskC,W,S) depends on position on model grid and has little to
203        do with scalar/vector difference; fix masking if using P-coordinates.
204      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
205        and update results of exp. global_with_exf (x2).
206      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
207    o pkg/obcs
208      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
209    o pkg/exf (interpolation):
210      - assume periodicity in X only if input field cover full longitude range.
211      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
212        and should vectorise).
213      - fix input lat of the 2 added row (in case we provide N.pole data).
214    
215    checkpoint63h (2011/12/30)
216    o pkg/seaice:
217      - change declaration of UVM from _RL to _RS in order to get B-grid
218        uIce,vIce monitor when _RS = real*4
219    o pkg/offline:
220      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
221      - compute vertical velocity if not read from file (switch on exactConserv
222        & staggerTimeStep);
223      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
224    o verification:
225      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
226        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
227        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
228      - update output of exp. global_ocean.cs32x15.viscA4 after changing
229        grid-file angles (used here for coriolis-3d);
230      - remove (or gzip) few files not needed to run fizhi-cs experiments.
231    o pkg/exf (vector interpolation):
232      - rotate vector component toward local grid-axis orientation using grid-angles
233        (stored in GRID.h) instead of locally computed rotation angle; keep old code
234        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
235    o pkg/seaice:
236      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
237        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
238    o pkg/PKG_OPTIONS.h files:
239      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
240        outside of the #ifdef ALLOW_THISPKG / #endif block.
241      - update verification/*/code/PKG_OPTIONS.h files.
242    o add a verification experiment (offline_exf_seaice/input.seaice) that test
243      the B-grid LSOR solver
244    o pkg/seaice: sort out emissivity and long wave radiation step 2:
245      - add emissivity for snow and ice as new run-time parameters
246        (unfortunately) that default to the corresponding exf values; this
247        changes results in most verification experiments so that for backward
248        compatibility these parameter have to be set explicitly to inconsistent
249        values (ugly);
250      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
251        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
252        until we agree how to handle this bug properly
253    o pkg/exf (interpolation):
254      - add a set of run-time param ({inputfield}_interpMethod), one for
255        each interpolated input field, to select the interpolation method
256        with a value of zero switching off the interpolation;
257      - print interpolation parameters to standard output;
258      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
259        (to use instead runoff_interpMethod=0 in data.exf).
260      - simplify default setting of interpolation parameters (for all fields,
261        set position to match model grid cell-center position, leading to trivial
262        interpolation in case of regular Lat-Lon grid) and fix for the case of
263        non-uniform delY.
264    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
265       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
266       this factor is absolutely required, because the lw exitance (= out-going
267       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
268       where the reflectivity rho = 1-emissivity for conservation reasons. Once
269       this is established, we can remove the CPP-Flag (if we want to).
270    o pkg/seaice:
271      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
272        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
273      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
274        what the name implies (and not emissivity*BoltzmannConstant), this means
275        the old default value of 5.5e-8 now means
276        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
277        S/R exf_readparms
278      - FV-discretization of the B-grid LSOR solver, turn on with
279        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
280        of the calling routine dynsolver, so that B and C-grid code look a
281        little more alike.
282      - fix index bugs in ostres.F (B-grid code)
283    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
284    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
285      default for SEAICE_emissivity, if useEXF; requires setting a wrong
286      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
287      backward compatiblity
288    o model/src: use sigmaR in calc_ivdc
289    
290    checkpoint63g (2011/12/16)
291    o pkg/seaice/seaice_growth.F:
292      fix heat conservation of the coupled ocean-seaice system.
293      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
294      solid vs liquid water treatment is resolved via QNET.
295    o pkg/seaice/seaice_growth.F:
296      add missing term for sublimation in saltFlux, which was breaking conservation.
297    o pkg/seaice/seaice_model.F:
298      Remove this patholigical case treatment in evolution branch,
299      where it is un-necessary and breaks conservation.
300      Update global_ocean.cs32x15/results accordingly for
301      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
302    o model/src:
303      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
304      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
305    o pkg/obcs:
306      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
307      tendency for temperature and salinity that is then applied to update
308      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
309      horizontal advection and diffusion contributions on the boundary (in
310      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
311      removing the mask in S/R timestep_tracer. The advantage of this approach is
312      that the updated tracer values include contributions from the surface
313      forcing and vertical diffusion.
314      This modification changes exp4.stevens because of vertical diffusion.
315    o model/src:
316      change non-curvilinear grid setting to also work with exch2 + blank tiles:
317      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
318        face dimensions.
319      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
320        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
321        and INI_SPHERICAL_POLAR_GRID.
322      change test-experiment global_ocean.90x40x15:
323      - split the domain in many more tiles (9x4 tiles of 10x10 each);
324      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
325      - update results of both test (std & dwnslp).
326    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
327       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
328    o model/src:
329      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
330        and fix initialisation when using sigma-coords.
331    o model/src:
332     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
333       to their current value at the beginning of forward_step.F": add a new run-time
334       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
335     - set doResetHFactors=T in the following test exp:
336        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
337        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
338        and tutorial_global_oce_in_p (nonLinFS in p)
339    o pkg/ecco
340      - added IES cost term
341    o verification/advect_xz
342      - scale down the depth by 1/100 (from 200 km to just 2.km)
343      - add secondary test using divergent flow, r-star and implicit vertical advection.
344      - add note (check_conserve_TS.txt) and matlab script to check global
345        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
346    o pkg/rbcs:
347      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
348    o pkg/obcs (Stevens BCs):
349      - fix various problems in the phase speed computations of the Stevens
350        boundary conditions:
351        - sign error for western and southern boundaries,
352        - time tendencies were underestimated by factor of dTracerLev and some just
353          zero (for multidim advection schemes) -> now estimate time tendencies
354          from difference between previous (n) time level and the one before (n-1);
355          this requires storing a field per tracer per boundary, also in the pickup
356          files.
357        - replace deltaTmom in cflMer/Zon computation with dTracerLev
358        - set default phase velocity to cflMer/Zon
359      - update verification experiment exp4.stevens
360    o pkg/generic_advdiff (implicit_r):
361      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
362        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
363      - fix implicit vertical diffusion or advection with NonLin FreeSurf
364        (was using current recip_hFacC instead of future recip_hFacC): set future
365        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
366        solver S/R ;
367      - fill diagnostics of vertical advective fluxes (computed from tendency)
368        when using implicit vert. advection;
369      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
370         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
371         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
372         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
373    o pkg/diagnostics:
374      - add diags for T & S tendency which goes through Adams-Bashforth.
375    
376    checkpoint63f (2011/11/30)
377    o pkg/obcs/obcs_calc_stevens.F:
378      - join some loops to reduce number of if-statements
379      - fix a bug in code for northern and southern boundaries.
380    o pkg/seaice/seaice_init_varia.F
381      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
382        caused zero ice-velocities for the B-grid code
383    o pkg/seaice/seaice_init_fixed.F
384      - fix a bug in the initialisation of the second metric terms
385        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
386      - this affects all seaice configurations with useCurviLinearGrid = .true.
387        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
388        = .true. (default)
389      - the only verification experiment affected is global_ocean.cs32x15:
390        icedyn, seaice, and seaice_dynmix (AD)
391    o pkg/thsice/thsice_diagnostics_state.F
392      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
393        not contain garbage that can lead to surprises in diagstats_calc.F
394    o model/src:
395      - move bi,bj loops inside INTEGR_CONTINUITY ;
396      - call INTEGR_CONTINUITY directly from forward_step.F
397        (previously called from momentum_correction_step.F)
398      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
399        forward_step.F and pkg/ecco/the_main_loop.F
400    o model/src/do_oceanic_phys.F:
401      - reset addMass to zero only if useICEFRONT ;
402      - separated k-loop for rhoInSitu calculation ;
403      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
404        and at constant T,S (= WdRHOdP);
405      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
406        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
407        transport of locally-referenced potential density);
408        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
409    o gluemnc:
410      - replace ncrcat with ncks when adding variables to *.glob.nc
411      - change the way variables without record dimensions are handled so that
412        files that have variables with and without record variables can be glued:
413        add a record dimension with a new unique name to be able to differentiate
414        between variable with and without a-prior record dimensions. Remove
415        this record dimension before adding the variable to the *.glob.nc file.
416        This procedure automatically works also for grid.*.nc files that do not
417        have any record dimension.
418    o verification/cpl_aim+ocn:
419      - generate new reference output on baudelaire (gfortran, mpich2) (previously
420        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
421    o pkg/obcs/obcs_calc_stevens.F:
422      - add code for northern and southern boundaries.
423      - reorder some loops to save some operations and so that drFBar can be scalar
424    o model/src:
425      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
426        truncation) and add diagnostics for Adams-Bashforth tendency increment.
427      - update test-exp. AD output:
428        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
429      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
430        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
431        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
432        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
433        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
434        tutorial_plume_on_slope.
435    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
436      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
437      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
438      does not even come with an F77 compiler anymore, this should not be
439      a limitation
440    
441    checkpoint63e (2011/11/06)
442    o pkg/seaice adjoint of LSR:
443      - substantially rework STORE dirs.
444      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
445        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
446        and only perform SOLV_MAX_FIXED adjoint iters.
447        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
448        always goes to same record, meaning that the last forward field will be
449        the one used in the adjoint - an approximation.
450      - now produces non-zero LSR-related gradients, and acceptable gradients for
451        An's zonal (x-z) test case (to be checked in)
452      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
453        (but these are screwed up by the thermodynamics in the first place);
454        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
455        output_adm.txt also reflects changes to seaice_lsr
456      - global_ocean.cs32x15:
457        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
458          (output_adm.seaice.txt was updated)
459        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
460          (output_adm.seaice_dynmix.txt)
461    o test-exp. exp4+stevens:
462      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
463    o pkg/seaice (lsr solver):
464      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
465        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
466      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
467      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
468        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
469      - compute (with new S/R) and print initial (+ free-driff sol. if available)
470        and final residual of linearised system.
471    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
472      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
473    o pkg/obcs: Stevens BCs (still only for east and west)
474      - fix Stevens BCs by using intermediate velocities of previous
475        time step as "baroclinic" contribution rather velocity of one grid cell
476        inside the boundaries; more consistent but makes the entire treatment
477        more complicated, requires new pickup files and two new S/Rs:
478        obcs_copy_uv_n and obcs_save_uv_n
479        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
480        (undefined by default)
481      - silently move computation of some grid factors into separate loops to
482        save some recomputations
483      - add a hack for non-linear free surface
484      - add a verification experiment to exp4 that tests this code
485    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
486    
487    checkpoint63d (2011/10/25)
488  o pkg/obcs + seaice-dynamics:  o pkg/obcs + seaice-dynamics:
489    - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before    - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
490      solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB      solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
# Line 24  o pkg/layers: Line 505  o pkg/layers:
505  o pkg/dic:  o pkg/dic:
506    - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add    - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
507      carbonate computation/output to CALC_PCO2_APPROX      carbonate computation/output to CALC_PCO2_APPROX
508    o pkg/generic_advdiff
509      - make TAF generate code that vectorizes:
510        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
511  o model/src:  o model/src:
512    - improve vectorization also for adjoint code of    - improve vectorization also for adjoint code of
513      solve_tridiagonal and solve_pentadiagonal. As this requires up to      solve_tridiagonal and solve_pentadiagonal. As this requires up to
514      5 new 3D-fields, this code is only turned on for the combination of      5 new 3D-fields, this code is only turned on for the combination of
515      ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX.      ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
516        for singular matrix check (only for TARGET_NEC_SX).
517    - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to    - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
518      ALLOW_AUTODIFF. This flag now needs to be set outside of      ALLOW_AUTODIFF. This flag now needs to be set outside of
519      solve_tri/pentadiagonal.F      solve_tri/pentadiagonal.F

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