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revision 1.2157 by rpa, Tue Jun 9 16:31:45 2015 UTC revision 1.2262 by mlosch, Mon Aug 22 14:38:37 2016 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/ptracers: add Bruno Deremble's code to complete the linear surface
8      correction for tracer conservation
9    
10    checkpoint65y (2016/07/29)
11    o pkg/debug (stats):
12      - change GLOBAL_SUM to GLOBAL_SUM_TILE (result independent of tile to
13        proc/thread mapping);
14      - fix Min & Max for case where 1 thread has only empty tiles;
15      - use RL variable to count number of wet grid points (with big domain,
16        can be too large to fit into integer*4).
17    o pkg/monitor:
18      - use RL variable to count number of wet grid points (but used only for del2)
19      - add new routine to compute Advective CFL within tracer time-stepping with
20        writing delayed until next monitor output.
21    o pkg/obcs:
22      - fix bug in OBCS_BALANCE_FLOW (OBCS_balanceFacN misspelled OBCS_balanceFacW)
23    o pkg/dic & seaice:
24      - fix compilation of ocean component for coupled atm+ocn model with
25        seaice dynamics & dic.
26    
27    checkpoint65x (2016/06/11)
28    o add a license text file in main MITgcm tree.
29    o added pkg/bling:
30      - intermediate complexity biogeochemical model
31      - see bling_description.txt for details
32      - verification experiment is global_oce_biogeo_bling (for now, in
33        Contrib/verification_other/); tested daily on baudelaire with gfortran.
34      - add entry point in pkg/gchem for new pkg "bling".
35    o pkg/seaice: fix tensile stength computation
36      - replace global field tensileStrength by tensileStrFac
37      - tensileStrFac can be computed once in S/R seaice_init_varia
38      - fortunately that does not affect any verification results
39    
40    checkpoint65w (2016/05/12)
41    o pkg/ctrl/ctrl.h: fix a comma in common block list, so that code compiles
42         with ECCO_CTRL_DEPRECATED defined
43    o verification/global_ocean.cs32x15:
44      - change secondary test "viscA4" to also test "selectP_inEOS_Zc=3"
45        with "selectNHfreeSurf=1".
46    o model/src (non-hydrostatic free-surface):
47      - More "natural" expression of NH free-surface term (case selectNHfreeSurf=1):
48        was: tmpSurf/(1+tmpSurf); changed to: 1/(1+Gamma) with Gamma=1/tmpSurf.
49      - Calculate surface vertical velocity after 2-D solver adjustment (accounts
50        for EmPmR if RealFreshWaterFlux); used in RHS (cg3d_b) if exactConserv
51        and used to compute dPhiNH (in post_cg3d.F) if selectNHfreeSurf=1.
52        This fixes EmPmR contribution when selectNHfreeSurf=1 & RealFreshWaterFlux.
53      - Update output (changes at machine truncation level) of verification exp:
54        exp4 (11 digits for cg2d), global_ocean.cs32x15.viscA4 (11.d),
55        short_surf_wave (13.d) and tutorial_deep_convection.smag3d (12.d).
56    o pkg/seaice: ITD code
57      - fix picking up from a single category model by initialising
58        heff/area/hsnowITD = 0. in seaice_itd_pickup.F
59      - split a long warning message in seaice_check_pickup.F into two lines,
60        because NEC SX-ACE cannot deal with the long line.
61    o model/src:
62      - fix missing dPhiNH in pressure_for_eos.F (case: selectP_inEOS_Zc=3)
63    o pkg/seaice:
64      - add missing checks for SEAICE_ALLOW_KRYLOV and SEAICE_ALLOW_BOTTOMDRAG
65    o pkg/seaice:
66      - add basal stress as parameterisation for grounding ice
67        following Lemieux et al. (2015)
68      - turn on by setting new parameter SEAICEbasalDragK2 to a value
69        larger than 0. Lemieux et al. (2015) recommend 15.
70      - The adjoint complains with extra recomputations so there is also a
71        new cpp-flag SEAICE_ALLOW_BOTTOMDRAG that is undefined by default in
72        order to postpone the problem
73      - compile the new code in lab_sea
74    o verification/halfpipe_streamice:
75      - update both TAF and OpenAD adm output (machine truncation differences)
76    
77    checkpoint65v (2016/04/08)
78    o verification/advect_xz:
79      - increase overlap size from 3 to 4 and add new secondary test for PQM
80        advection scheme (with mono & wino limiter).
81      - change main exp. to test PPM (with weno limiter) adv.scheme on Temp.
82    o model/src:
83      - new parameters "top_Pres" & "seaLev_Z" (replacing Ro_SeaLevel and recently
84        added phi0Ref) to set vertical axis origin and phiRef origin;
85        keep Ro_SeaLevel for backward compatibility (with a warning).
86       According to coordinate and fluid type:
87        OCN in Z: top_Pres(Ref) (=rhoConst*PhiRef(1)), seaLev_Z (=rF(1), @ the top)
88        ATM in Z: top_Pres(Ref) (=rhoConst*PhiRef(1)), seaLev_Z (=rF(Nr+1) @ bottom)
89        OCN in P: top_Pres (=rF(Nr+1)), seaLev_Z (= PhiRef(Nr+1)/g, @ the top)
90        ATM in P: top_Pres (=rF(Nr+1)), seaLev_Z (= PhiRef(1)/g, @ the bottom)
91      - remove Ro_SeaLevel from ATM experiment parameter files;
92      - in tutorial_global_oce_in_p, remove Ro_SeaLevel and set top_Pres to the
93        complement; update output.txt (changes at machine truncation level).
94    o pkg/seaice/seaice_evp.F
95      - simplify computation of deltaZ and zetaZ to simple averaging following
96        Bouillon et al. (2013). This removes a lot of code, but also changes
97        verification experiment lab_sea.hb87 -> updated
98    
99    checkpoint65u (2016/03/14)
100    o pkg/generic_advdiff:
101      - from Darren: add PPM and PQM advection schemes (number 40-42 and 50-52)
102        with 2 types of limiter (see: Engwirda & Kelley, submit. to JCP);
103        Note (from Darren): unlimited PPM/PQM scheme (40 & 50) are just for
104        testing and not for actual use.
105    o model/src:
106      - add parameter "phi0Ref" to specify reference [pressure/geo] potential at
107        origin r = rF(1);
108      - add options (parameter selectP_inEOS_Zc) to select which pressure to use
109        in EOS for height coordinate: enable to include NH Pressure or to use
110        more accurate pressure vertical profile; options not linked to EOS type
111        (as previously, e.g., JMD95P/JMD95Z) but set default according to EOS type;
112      - start to implement variable gravity (along vertical): for now, only with
113        z-coords (not even z*).
114      - add Ideal Gas equation of state for height coordinate.
115      - update OpenAD output (affected at machine truncation level) of exp:
116        global_ocean.90x40x15, OpenAD (std) and tutorial_global_oce_biogeo.
117    o pkg/exf:
118      - add ALLOW_EXF_OUTPUT_INTERP cpp switch to output the result
119        of exf interpolation (before any rescaling, rotation or interpolation
120        to velocity point) for each field that gets loaded from file. This option
121        identically mimics the input file organization (e.g. record numbers in year
122        by year input files) besides the change in horizontal grid.
123      - add rotateStressOnAgrid run-time switch so that wind stress fields
124        can be provided on the A-grid in zonal/meridional direction and
125        rotated on the fly. This only applies to the case when the exf
126        interpolation is off and rotateStressOnAgrid is false by default.
127    o model/src:
128      - rename internal parameter "useDynP_inEos_Zc" to "storePhiHyd4Phys" (since
129        it's also used with pkg/atm_phys) and add few more parameters (but still
130        inactive, src code yet to come)
131    
132    checkpoint65t (2016/02/10)
133    o pkg/atm_phys:
134      - from Ruth Geen: add optical depth dependence on CO2 concentration.
135    o model/src:
136      - fix vertical inter/extra-polation of density factor rhoFacF (for anelastic)
137        for the case setCenterDr=T (delRc set from "data"); add output of rhoFacC&F.
138        Update output of exp. deep_anelastic (changes at truncation level).
139    o tools:
140      - add a hack in "remove_comments_sed" (used only with TAF) for recent
141        version of OpenMPI (shipped with FC.23): comment out the new header
142        file "mpif-sizeof.h" which causes problems to TAF.
143    o pkg/seaice:
144      - change the termination criterion so that maxits (SEAICElinearIterMax)
145        has an effect
146      - unify iteration parameters for implicit solvers (JFNK and Picard)
147        SEAICEnonLinIterMax replaces SEAICEnewtonIterMax/NPSEUDOTIMESTEPS
148        SEAICElinearIterMax replaces SEAICEkrylovIterMax/SOLV_MAX_ITER
149        SEAICEpreLinIterMax replaces SOLV_MAX_ITER in preconditioner
150        SEAICEpreNL_IterMax replaces NPSEUDOTIMESTEPS in preconditioner
151        SEAICEnonLinTol     replaces JFNKgamma_nonlin
152      - remove S/R SEAICE_FGMRES_DRIVER and put content into S/R SEAICE_JFKN
153      - add new Picard-Krylov solver, compile with SEAICE_ALLOW_KRYLOV and
154        use with SEAICEuseKrylov
155    o pkg/seaice/seaice_lsr.F
156        fix small bug: replace zetaZ by zetaZloc in S/R seaice_lsr_rhsu/v; only
157        relevant if SEAICEuseStrImpCpl=T, and even then it does not seem to have
158        an effect.
159    o pkg/seaice: add two new parameters
160      - SEAICEuseLSR to simplify the logic in seaice_dynsolver (this
161        parameter is not in any namelist)
162      - SEAICEusrPicardAsPrecon to allow s/r seaice_lsr to be used as
163        a preconditioner for the non-linear Newton iteration of the JFNK
164        solver
165    o pkg/seaice/seaice_lsr.F: replace 1./SEAICE_deltaTdyn with recip_deltaT,
166      affects some experiments at truncation level:
167      - global_ocean.cs32x15.icedyn (11 digits),
168      - global_ocean.cs32x15.seaice (11 digits),
169      - seaice_itd (12 digits), seaice_itd.lipscomb07 (12 digits) -> update
170      - also update global_ocean.cs32x15 adjoint and tangent-linear results
171    o pkg/salt_plume & pkg/thsice:
172      - for coupled  set-up with pkg/thsice in ATM and pkg/salt_plume in OCN,
173        connect salt_plume flux to ATM-OCN coupling pkgs interface:
174       a) in ATM: also cumulate salt-plume flux in S/R THSICE_SALT_PLUME (for
175         export to coupler interface) even without compiling pkg/salt_plume ;
176       b) in OCN: apply coupler salt-plume flux to pkg/salt_plume field
177         (saltPlumeFlux) just before exch call, in S/R SALT_PLUME_DO_EXCH.
178    o pkg/dic:
179      - use the updated seaice fraction (from seaice pkgs) for DIC forcing
180        instead of the previous time-step value ; done in new S/R DIC_FIELDS_UPDATE
181        called from the top of dic_biotic_forcing.F (instead of in DIC_FIELDS_LOAD);
182      - move also update with values from ATM-OCN Coupler in the same new S/R
183        (previously done in ocn_apply_import.F).
184    o tools/adjoint_options:
185      - specify explicitly "-f77" or "-f90" in default ad-optfile since TAF (default)
186        has been changed on Jan 14, 2016.
187    o pkg/ggl90:
188      - add alternative discretisation of vertical shear (off by default), to
189        compute the mean (@ grid-cell center) of vertical shear compon instead of
190        vertical shear of mean flow (@ grid-cell center).
191      - add correct parenthesis in ALLOW_GGL90_SMOOTH code to get the same truncated
192        results on adjacent faces of cubed-sphere grids; this fix the restart.
193    o pkg/atm_compon_interf:
194      - skip time-ave over cpl_atmSendFrq of Sea-Level Pressure (atmSLPr) and just
195        pass last value, stored directly before export to CPL ;
196        Note: this affects results of Coupled set-up where OCN uses useImportSLP=T
197      - remove atmSLPr from pickup files (no longer needed for restart)
198    
199    checkpoint65s (2016/01/13)
200    o eesupp & genmake2:
201       - first check for Function ETIME and, if it fails, then check for subroutine
202         ETIME and consistent output; use the appropriate version in timers.F
203    o model/src:
204      - to check restart test, add option to apply EXCH to U,V earlier, just before
205        integr_continuity; turned off by default.
206    o pkg/dic:
207      - remove CPP option USE_ATMOSCO2 (not needed)
208    o tools/tst_2+2:
209      - try to ignore difference between +0 and -0 in binary file, causing test
210        to fail for no good reason.
211    o eesupp & genmake2:
212      - put back modif from Jinxuan Zhu - change etime fct call to S/R call -
213        but also check (in genmake2) that test runs and returns meaningful results.
214    o coupler pkgs:
215      Finish implementation of optionally-exchanged variable switches (started on
216       Nov 12) with addition of few more exchanged fields, including 2-way exchange
217       of pkg/thsice vars to allow to use seaice dynamics (from pkg/seaice) & seaice
218       advection in OCN component; this requires sequential coupling.
219      coupler (pkg/atm_ocn_coupler):
220      - add argument msgUnit and iter number to CPL_SEND/RECV_ATM/OCN_FIELDS
221        routines (useful for debug).
222      - only export/import optionally exchanged fields (RunOff, seaice, Salt-Plume
223         flux, DIC fields) if corresponding switch is ON.
224      - add option to export RunOff to OCN (to use for DIC river input)
225      - add 2-way thSIce vars exchange; check for consistent cpl_sequential setting.
226      components (pkg/atm_ & ocn_compon_interf):
227      - to save memory space in ATM & OCN comp: add some #ifdef ALLOW_${PKG} around
228        optionally exchanged fields; add a check & stop in cpl_readparms.F.
229        ATMCPL.h: ALLOW_LAND for RunOff, ALLOW_THSICE for seaice, ALLOW_AIM for CO2;
230        OCNCPL.h: ALLOW_SALT_PLUME, ALLOW_DIC for DIC, ALLOW_THSICE for 2-W thsice.
231      - rename:   fracIce     -> sIceFrac_cpl (<- match coupler var name)
232        + in ATM: fracIceTime -> sIceFracTime ; seaIceTime -> sIceMassTime.
233      - add 2-way thSIce vars exchange ; add Salt-Plume flux ; add RunOff in OCN.
234      - hold in common block coupler optionally-exchanged variable switch
235        and set default "useImportXXX" accordingly; + check & stop if inconsistent.
236      - add diagnostics for all imported fields from coupler (in both OCN & ATM);
237        this is intended to replace the OCN cplFldtave.* output files (not updated
238        to contain new additional exchanged fields).
239    o pkg/dic:
240      - fix an other bug (also from 2014/08/30) in dic_atmos.F, in dic_int1=3 code.
241    o pkg/thsice:
242      - when coupled to ATM (useCoupler) with thSIce_skipThermo=T, skip reading
243        and writing of thsice pickup files.
244    o pkg/atm_compon_interf:
245      - move all field individual export-call out of cpl_export_import_data.F
246        into new S/R ATM_EXPORT_FIELDS
247    o pkg/atm_compon_interf:
248      - store state variables (for now, only thSIce fields) just before beeing
249        exported (in cpl_export_import_data.F, like on ocean side) instead of from
250        atm_store_my_data.F like all exported fluxes.
251      - new version of pickup_cpl: write field names into meta file and read meta
252        file to find field postion in pickup. Also only write/read fields meeded for
253        restart (same logic as main pickup file ; also using pickupStrictlyMatch)
254    o pkg/dic:
255      - fix bug (added on 2014/08/30) in dic_atmos.F for the case dic_int1= 2 or 3.
256    o pkg/seaice: add new parameter SEAICEpressReplFac to choose between
257        pressure replacement method (=1., default) or original Hibler (1979) (=0.)
258        value can be from domain [0,1] to average between the two methods
259    o pkg/atm_phys:
260      - allow to provide 2-d map of albedo and mixed-layer depth from files (but
261        hold fixed in time).
262    
263    checkpoint65r (2015/12/21)
264    o pkg/seaice:
265        fix bug in tridiagonal solvers for SEAICE_OLx/y>0, this affects the JFNK
266        solver (offline.dyn_jfnk) and global_ocean.cs32x15.seaice -> updated
267    o pkg/seaice:
268      - fix a bug in computing areaS in (J-J -> J-1) that affects runs
269        when SEAICEscaleSurfStress=.TRUE.,
270      - apply areaW and areaS in S/R seaice_calc_lhs
271    o pkg/atm_phys:
272      - add diagnostics for 3-D, Nr+1 levels diagnostics of radiative fluxes
273        (shortwave & longwave, net & downward) and diagnostics of temp. tendency
274        for individual contribution (convection, LSC cond, radiation)
275      - add Ruth Geen etal, GRL 2016, radiation options (see paper supp.
276        information); activated with: solar_exponent=0. and wv_exponent=-1.
277    o pkg/ggl90:
278      - within IDEMIX add upper limit for horizontal group velocity to
279        avoid instability problems in the explicit horizontal diffusion term for
280        long time steps or high resolution
281    o pkg/diagnostics:
282      - simplify setting of local-array size in diagstats_output.F: uses "numLevels"
283        (from DIAGNOSTICS_SIZE.h) to allow to write out more than Nr levels.
284    o testreport:
285      - remove "-v" (verbose option) in default mpirun command.
286    o pkg/seaice/seaice_growth:
287      - catch potential division by zero in ITD code, does not change
288        verification results
289    o pkg/ecco:
290      - retire old codes to the Attic. The calls to retired functions are
291        left in a commented form in case they ever need to be re-activated.
292      - ecco_check.F: issue warning if any old CPP option is
293        defined that corresponds to retired codes -- then stop.
294    o pkg/atm_compon_interf:
295      - change seaice fraction (use for OCN dic surf.flux) stored and sent to
296        coupler: use last time-step value instead of average over cplSendFrq_iter
297        time-step, similar to what is done for seaIceMass.
298        This will affect results (pkg/dic) of coupled ATM-OCN+dic set-up.
299    o eesupp & genmake2:
300      - from Jinxuan Zhu: change etime fct call to S/R call (fix gfortran ETIME);
301        <= remove until a fix is found for some ifort version on ia32 machine.
302    o pkg/seaice/seaice_evp:
303      - refine residual computation
304    
305    checkpoint65q (2015/11/18)
306    o pkg/seaice/seaice_evp:
307      - fix residual computations so that they no longer affect the actual
308        simulation code
309      - fix seaice_readparams to be able to actually set new parameters
310        SEAICEaEVPcStar and SEAICEaEVPalphaMin, also fix logic a little
311    o model/src:
312      - fix wrong truncation (single prec) from "FLOAT" function in expressions
313        like: deltaT*FLOAT(myIter) when myIter is large:
314         a) replaced by DFLOAT (if not seen by TAF);
315         b) remove "FLOAT" and use implicit type conversion (if seen by TAF).
316    o pkg/aim_v23:
317      - write/read the expected CO2 pickups (from S/R AIM_DO_CO2): fix reading
318        when pickupSuff is set ; do write rolling pickups + at the end of the run.
319    o pkg/atm_ocn_coupler + ocn_compon_interf:
320      - in prep for using pkg/seaice Dyn in coupled set-up, implement sequential
321        coupling option-1: ATM -(cpl)-> OCN and then OCN -(cpl)-> ATM ;
322        add corresponding call in DO_OCEANIC_PHYS.
323    o coupler pkgs:
324      Start a new way to set-up optionally-exchanged variables (previously, only
325       there for exchange_DIC): switch on/off from 1 place, at run-time, in coupler
326       data.cpl (new) instead of at compile time in ATMIDS.h & OCNIDS.h ;
327       send switch to ATM & OCN compon before reading their own "data.cpl" (so that
328       compononent param default can be set accordingly).
329      Note: this new switch (cpl_exchange_[xxx]) is not a per variable switch
330       but rather applies to a group a fields (going both ways like for DIC)
331       and corresponds to an option of coupling config.
332      coupler (pkg/atm_ocn_coupler):
333      - change parameter file from "data" to "data.cpl" (in cpl_read_params.F),
334        and read namelist directly (without eessup S/R calls) instead of
335        in the very un-flexible old way, 1 param per line, in fixed order;
336      - add error-counter to track errors (e.g., missing "data.cpl") and to stop
337        cleanly in CPL_CHECK_CPLCONFIG
338      - add new coupling-exchange selectors (some not yet active) including
339        cpl_exchange_DIC (to set to 3 to replace atmCpl_exchange_DIC=T in ATMIDS.h
340                                             and ocnCpl_exchange_DIC=T in OCNIDS.h);
341      - add 2 new S/R (CPL_SEND_ATM/OCN_CPLPARMS) to send coupler-params to each
342        component ; called directly from coupler.F, after comp. registrations;
343      - rename few variable-ID names (in ATMIDS.h & OCNIDS.h):
344         atm/ocnSeaIceName --> atm/ocnSIceMassName ; atm/ocnFCO2Name ->
345          -> atm/ocnCO2FluxName ; atm/ocnWSpdName --> atm/ocnWindSpdName
346      components (pkg/atm_ & ocn_compon_interf):
347      - add ATM/OCN_CPL_OPTIONS.h in component pkgs and include the corresponding
348        CPP header file in all pkg source files.
349      - move checking of comp. configs out of cpl_exch_configs.F into new S/R
350        ATM/OCN_CHECK_CPLCONFIG;
351      - add error-counter to track errors (e.g., in "data.cpl") and to stop
352        cleanly in ATM/OCN_CHECK_CPLCONFIG;
353      - add new S/R CPL_IMPORT_CPLPARMS to import coupling-exchange selectors
354        from coupler ; called from initialise_fixed.F, after PACKAGES_BOOT and
355        before PACKAGES_READPARMS;
356      verification/cpl_aim+ocn/:
357      - update ATMIDS.h & OCNIDS.h (in shared_code) and use new parameter file
358        "data.cpl" for coupler (in input_cpl).
359    o eesupp/inc:
360      - change the MPI-global-sum default (in CPP_EEOPTIONS.h) to:
361        #define GLOBAL_SUM_ORDER_TILES (only affects MPI built of global_sum_tile.F)
362        to always cumulate tile local-sum in the same order (still uses
363        MPI_Allreduce like standard code).
364      - in verification experiment code, remove local CPP_EEOPTIONS.h_mpi files
365        that are now identical to standard version (in eesupp/inc).
366    o pkg/shelfice:
367      - add SHELFICETransCoeffTFile for initializing spatially varying
368        heat and salt transfer coefficients
369    o pkg/atm_compon_interf & ocn_compon_interf:
370      - combine into 1 (new) S/R CPL_EXPORT_IMPORT_DATA the two previous
371        S/R CPL_EXPORT_MY_DATA & CPL_IMPORT_EXTERNAL_DATA
372      - move bi,bj loops inside S/R OCN_STORE_MY_DATA
373    o pkg/atm_ocn_coupler:
374      - initialise to zero ATMVARS.h & OCNVARS.h arrays.
375    o pkg/rbcs:
376      - select RBCS-mask for Temp & Salt the same way as for pTracer ; this allows
377        to compile with maskLEN=1 when all tracers use the same RBCS-mask.
378      - add a short report (to STDOUT) about RBCS-mask settings.
379    
380    checkpoint65p (2015/10/23)
381    o pkg/seaice/seaice_evp.F: fix store directives and key computations, since
382        there is no adjoint test for EVP, we don't know what it does to the adjoint
383        solution, but at least there are no more recomputation warnings left
384    o pkg/seaice/seaice_evp.F: slight modification of averaging so that EVP stands
385        a chance of giving the same results as a fully converged VP (JFNK) solver
386    o tools/adjoint_options/adjoint_diva:
387      - fix bug (typo) in Tang-Linear FLAGS setting for MPI + DIVA
388    o pkg/streamice:
389      - spotted bug in streamice_driving_stress using dyG where should have been dxG
390    o pkg/exf:
391      - remove STOP statement that prevented to use wind or (wind-)stress
392        interpolation for constant-in-time forcing fields (wind/stress period = 0).
393    o pkg/seaice:
394      - replace SEAICE_EVP_USE_ADAPTATION by run time parameters, requires
395        5 additionals 2D fields and 6 new store directives
396      - change logic in seaice_readparms.F: EVP code can now be turned on in
397        various ways, setting SEAICE_deltaTev is no longer required,
398        alternatively set SEAICE_evpAlpha/Beta, SEAICEuseEVPstar, SEAICEuseEVPrev,
399        or SEAICEaEVPcoeff
400    o pkg/shelfice/shelfice_thermodynamics.F
401      - redefining uLoc/vLoc to u/v, instead of 2u/v
402    o pkg/seaice/seaice_evp.F: introduce "adaptive EVP" by Madlen Kimmritz
403      - this is an intermediate state of a truely converging EVP that has
404        the potential of outperforming implicit VP methods, I do not recommend
405        using it yet.
406      - for now, "adaptive EVP" is turned on by setting SEAICE_EVP_USE_ADAPTATION
407        and all parameters are hardwired
408      - for convergence it still requires very smooth regularisations, that means,
409        if SEAICE_DELTA_SMOOTHREG is defined, deltaCreg=deltaC+deltaMin, which is
410        different from the VP case with deltaCreg=sqrt(deltaC**2+deltaMin**2); also
411        specific averaging appears to be required, still subject to tuning
412      - still needs cleaning and I need to turn parameter into runtime parameters
413      - add code to compute and print residuals of iteration, compile with
414        defining ALLOW_SEAICE_EVP_RESIDUAL to enable it
415    o pkg/seaice/seaice_evp.F: fix a bug (factor of four in front of e12Csq)
416      that entered with r1.54 on Sep04, 2015, -> update results
417    
418    checkpoint65o (2015/09/14)
419    o pkg/mom_vecinv & mom_common:
420      - add deep-atmosphere geometry factor in mom_calc_visc.F + in routines
421        called from there.
422      - add anelastic and deep-atmosphere geometry factor in pkg/mom_vecinv ; this
423        allows to use Vector-Invariant form in deep atmos and anelastic formulation
424    o pkg/seaice: introduce fast ice parameterisation following Itkin et al. (2015)
425      and Koenig-Beatty+Holland (2012)
426      - two new parameters SEAICE_tensilFac and SEAICE_tensilDepth
427      - global 2D field tensileStrength, computed in seaice_calc_ice_strength
428      - requires an extra input argument for S/R seaice_calc_viscosities
429      - tensileStrength's depth dependence is different from Itkin et al. (2015)
430        (to be changed and played with, for now exponential)
431    o pkg/seaice: introduce new parameter SEAICEscaleSurfStress (default = .FALSE.)
432      - if TRUE scale ice-ocean and ice-atmosphere stress acting on sea ice
433        by AREA according to Connelly et al. (2004), JPO.
434      - For EVP and the LSR solver, the implicit part of the drag term is
435        the only non-zero term in the denominator when there is no ice (which
436        prevented running the model with zero ice-ocean drag). If
437        SEAICEscaleSurfStress = .TRUE., this results in a division by zero
438        (or zero main diagonals BU/BV) which need to be caught. A practical
439        consequence is that for open water, the momentum equation reduce
440        to trivially 0 = 0 + 0 (for EVP). For LSR, BU/BV are reset to 1, if
441        they happen to be zero, often leading to a non-zero solution over
442        open water.
443    o pkg/seaice: revise EVP code (seaice_evp.F) in preparation for a more
444        efficient EVP method.
445      - introduce area-weighted averages for e12 (analogously to
446        seaice_calc_viscosities.F); this totally changes lab_sea.hb87 (2 digits
447        remain, but also changing the order of terms in the previous average
448        changed the results as much) -> update experiment
449      - add SEAICE_DELTA_SMOOTHREG code
450      - disentangle computation of zetaC/deltaC and zetaZ/deltaZ, also for
451        TEM-code
452      - adjust loop bounds so that only required fields are computed
453      - add new averaging code for zetaZ/deltaZ (again similar to
454        seaice_calc_viscosities.F), inactive by default for now (will change
455        results again), but will replace old code eventually
456    o eesupp/src:
457      - add an other alternative for multi-proc GLOBAL_SUM (in global_sum_tile.F)
458        to always cumulate tile local-sum in the same order
459        (option #define GLOBAL_SUM_ORDER_TILES in CPP_EEOPTIONS.h).
460        Still uses MPI_Allreduce (like standard code) but on array of tiles
461        and should be faster than GLOBAL_SUM_SEND_RECV code.
462      - switch almost all verification experiments that use GLOBAL_SUM_SEND_RECV
463        (defined in CPP_EEOPTIONS.h_mpi) to GLOBAL_SUM_ORDER_TILES instead.
464      - add CPP_EEOPTIONS.h_mpi with GLOBAL_SUM_ORDER_TILES defined in 14 more exp.:
465         aim.5l_cs, cheapAML_box, deep_anelastic, dome, fizhi-cs-32x32x40,
466         fizhi-cs-aqualev20, fizhi-gridalt-hs, global_ocean_ebm, matrix_example,
467         natl_box, solid-body.cs-32x32x1, tutorial_advection_in_gyre,
468         tutorial_baroclinic_gyre and tutorial_held_suarez_cs.
469    
470    checkpoint65n (2015/07/29)
471    o pkg/thsice:
472      - add a warning when used with pkg/aim but without updating SST
473        (stepFwd_oceMxL=F & useCoupler=F & tauRelax_MxL<>-1 ).
474    o pkg/offline:
475      - change where Offline-Fields are loaded, from load_fields_driver.F to
476        directly within FORWARD_STEP, just after updating iter number and time;
477      - move setting of GM and KPP diffusivity out of OFFLINE_FIELDS_LOAD into new
478        S/R OFFLINE_GET_DIFFUS that is called towards the end of DO_OCEANIC_PHYS;
479       These changes allow:
480        a) to recover exactly on-line results using deltaToffline=deltaTClock,
481        tested (using offlineIter0= nIter0 -1 and offlineTimeOffset= -deltaT/2)
482        both with Lin & Non-Lin Free-Surf, both with staggerTimeStep & synchronous
483        time-step, both with GM & KPP files and with recomputing these fields;
484        b) no needs to switch on staggerTimeStep anymore;
485        c) simplify rescaling of offline horiz. velocity with Non-Lin Free-Surf.
486      - update output of experiment tutorial_dic_adjoffline (only 3 digits left).
487    o pkg/offline:
488      - change (rarely used) offset-iteration parameter to an offset time (in s):
489        can easily recover previous offset-iter effect by setting offset-time
490        (offlineTimeOffset) to offset-iter x deltaToffline;
491      - do not turn-off Temp & Salinity surface relaxation when using KPP (used
492        in KPP as part of surface buoyancy forcing) in offline run.
493      - fix ptracers KPP non-local term in the case where KPP is re-computed.
494    o OpenAD
495      - Adding preliminary ggl90 test to OpenAD verification.
496        Config. with ggl90 currently diverges after 64 time steps
497        so will need more work to become more stable
498      - Adding preliminary kpp test to OpenAD verification.
499        required small tweakes in kpp_routines.F
500      - Merge and update from Krishna Narayanan's contrib area:
501        * Add one variable for preliminary OpenAD DIVA
502        * Add replacement time-stepping for OpenAD DIVA
503        * genmake2 flag -diva (but only for OpenAD; preliminary)
504        * required modifs for OAD_support
505        successful preliminary test for tutorial_global_oce_biogeo/
506    o pkg/seaice:
507      - initialise deltaC in seaice_lsr, cosmetic changes in seaice_lsr
508      - add cpp-flag SEAICE_DELTA_SMOOTHREG for option of regularising
509        delta with a smooth function in s/r seaice_calc_viscosity
510        (no effect on EVP)
511      - rename local suffix "sqr" into "sq" for more consistent variable names
512    o pkg/seaice:
513        add new parameter SEAICE_deltaMin that is used ***only***
514        for regularizing Delta (and nothing else, like the parameter
515        which is also used for all sorts of things SEAICE_EPS).
516        Defaults to SEAICE_EPS for backward compatibility only.
517    o pkg/seaice: replace erroneously storing e12Csqr on the wrong tape with
518        the wrong key by inialising it before use -> fixes a recomputation
519        problem but does not fix the gradient
520    o pkg/layers:
521      - move resetting of flux arrays to outside the iLa loop
522        (this caused layers_diapycnal to not work with more than one layer coord.)
523      - fix bug in calculation of layers_recip_delta in layers_init_fixed.F
524    o pkg/layers:
525      - remove from common block 3D layers fields (used to diagnose transport
526        in tracer coords) and declare them as local arrays in layers_calc.F
527    o pkg/seaice:
528      - Rename SEAICE_VECTORIZE_LSR_ZEBRA to SEAICE_LSR_ZEBRA and define it
529        in lab_sea forward experiment (changes results -> updated)
530      - update adjoint experiment lab_sea after cleaning up seaice_lsr_tridiagu/v
531    o pkg/seaice: modify seaice_lsr.F in order to improve the gradient
532       computations; for SEAICE_VECTORIZE_LSR
533      - move the loops over which the tridiagonal solvers (seaice_lsr_tridiagu/v)
534        sweep to the outside,
535      - remove store directives and add "CADJ loop sequential" directives
536        in analogy to model/src/solve_tridiagonal.F
537      - replace many "#ifdef SEAICE_VECTORIZE_LSR_ZEBRA" by variable loop
538        boundaries to yield more readable code. This has also the charming side
539        effect that your can use SEAICE_VECTORIZE_LSR_ZEBRA without
540        SEAICE_VECTORIZE_LSR (i.e. adjoint without recomputations in
541        seaice_lsr_tridiagu/v now requires either of these flags, vectorization
542        still requires SEAICE_VECTORIZE_LSR with SEAICE_VECTORIZE_LSR_ZEBRA as
543        an additional option)
544       The tridiagonal solvers are now completely analoguous to solve_tridiagonal.F
545       but the adjoint gradients (which are affected by this change) still explode.
546    o coupler (atm & ocn _compon_interf):
547      - avoid using Exch2 IO mapping if not suitable.
548    
549    checkpoint65m (2015/06/15)
550    o pkg/layers:
551      - clean-up old parameters setting (from Sep 2012):
552        + remove old parameters setting from common block (declared locally);
553        + stop if any old parameter is mixed with new parameters;
554        + check for valid or consistent parameter setting (e.g., layers_name)
555      - check that layers_bounds for Pot.Density are in the right range;
556        this is supposed to catch un-updated setting after recently shifting
557        potential density field "prho" by -1000 (now in "sigma" scale).
558  o pkg/layers:  o pkg/layers:
559    - Added missing call to layers_fill for keeping track of tottend in    - Added missing call to layers_fill for keeping track of tottend in
560      pkg/diagnostics/diagnostics_fill_state.F      pkg/diagnostics/diagnostics_fill_state.F
# Line 21  o pkg/layers: Line 572  o pkg/layers:
572      thermodynamics.F, impldiff.F) and gad to save the necessary fields      thermodynamics.F, impldiff.F) and gad to save the necessary fields
573      for layers_thermodynamics calculations      for layers_thermodynamics calculations
574  o pkg/ptracers:  o pkg/ptracers:
575    - add capability of stepping a passive tracer forward    - add capability of stepping a passive tracer forward without advection
576      without advection by setting PTRACERS_advScheme to 0.      by setting PTRACERS_advScheme to 0.
577  o pkg/diagnostics:  o pkg/diagnostics:
578    - add few (threads) _BARRIER around any update of "diag_pkgStatus".    - add few (threads) _BARRIER around any update of "diag_pkgStatus".
579  o pkg/layers:  o pkg/layers:
# Line 244  o model/src & mom pkgs: Line 795  o model/src & mom pkgs:
795      just copy level Nr value to level Nr+1.      just copy level Nr value to level Nr+1.
796  o doc:  o doc:
797    - add notes form Abhisek Chakraborty on how to close Heat & Salt budgets.    - add notes form Abhisek Chakraborty on how to close Heat & Salt budgets.
798  o pkg/streamice:  o pkg/shelfice:
799    - shelfice_init_varia.F, shelfice_init_fixed.F, shelfice_readparms.F,    - shelfice_init_varia.F, shelfice_init_fixed.F, shelfice_readparms.F,
800      SHELFICE.h: move array shelficemass to init_varia, initialise      SHELFICE.h: move array shelficemass to init_varia, initialise
801      from array shelficemassinit, which is set in init_fixed and      from array shelficemassinit, which is set in init_fixed and

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