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revision 1.2107 by jmc, Wed Dec 17 17:58:39 2014 UTC revision 1.2261 by jmc, Fri Jul 29 19:49:59 2016 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint65y (2016/07/29)
8    o pkg/debug (stats):
9      - change GLOBAL_SUM to GLOBAL_SUM_TILE (result independent of tile to
10        proc/thread mapping);
11      - fix Min & Max for case where 1 thread has only empty tiles;
12      - use RL variable to count number of wet grid points (with big domain,
13        can be too large to fit into integer*4).
14    o pkg/monitor:
15      - use RL variable to count number of wet grid points (but used only for del2)
16      - add new routine to compute Advective CFL within tracer time-stepping with
17        writing delayed until next monitor output.
18    o pkg/obcs:
19      - fix bug in OBCS_BALANCE_FLOW (OBCS_balanceFacN misspelled OBCS_balanceFacW)
20    o pkg/dic & seaice:
21      - fix compilation of ocean component for coupled atm+ocn model with
22        seaice dynamics & dic.
23    
24    checkpoint65x (2016/06/11)
25    o add a license text file in main MITgcm tree.
26    o added pkg/bling:
27      - intermediate complexity biogeochemical model
28      - see bling_description.txt for details
29      - verification experiment is global_oce_biogeo_bling (for now, in
30        Contrib/verification_other/); tested daily on baudelaire with gfortran.
31      - add entry point in pkg/gchem for new pkg "bling".
32    o pkg/seaice: fix tensile stength computation
33      - replace global field tensileStrength by tensileStrFac
34      - tensileStrFac can be computed once in S/R seaice_init_varia
35      - fortunately that does not affect any verification results
36    
37    checkpoint65w (2016/05/12)
38    o pkg/ctrl/ctrl.h: fix a comma in common block list, so that code compiles
39         with ECCO_CTRL_DEPRECATED defined
40    o verification/global_ocean.cs32x15:
41      - change secondary test "viscA4" to also test "selectP_inEOS_Zc=3"
42        with "selectNHfreeSurf=1".
43    o model/src (non-hydrostatic free-surface):
44      - More "natural" expression of NH free-surface term (case selectNHfreeSurf=1):
45        was: tmpSurf/(1+tmpSurf); changed to: 1/(1+Gamma) with Gamma=1/tmpSurf.
46      - Calculate surface vertical velocity after 2-D solver adjustment (accounts
47        for EmPmR if RealFreshWaterFlux); used in RHS (cg3d_b) if exactConserv
48        and used to compute dPhiNH (in post_cg3d.F) if selectNHfreeSurf=1.
49        This fixes EmPmR contribution when selectNHfreeSurf=1 & RealFreshWaterFlux.
50      - Update output (changes at machine truncation level) of verification exp:
51        exp4 (11 digits for cg2d), global_ocean.cs32x15.viscA4 (11.d),
52        short_surf_wave (13.d) and tutorial_deep_convection.smag3d (12.d).
53    o pkg/seaice: ITD code
54      - fix picking up from a single category model by initialising
55        heff/area/hsnowITD = 0. in seaice_itd_pickup.F
56      - split a long warning message in seaice_check_pickup.F into two lines,
57        because NEC SX-ACE cannot deal with the long line.
58    o model/src:
59      - fix missing dPhiNH in pressure_for_eos.F (case: selectP_inEOS_Zc=3)
60    o pkg/seaice:
61      - add missing checks for SEAICE_ALLOW_KRYLOV and SEAICE_ALLOW_BOTTOMDRAG
62    o pkg/seaice:
63      - add basal stress as parameterisation for grounding ice
64        following Lemieux et al. (2015)
65      - turn on by setting new parameter SEAICEbasalDragK2 to a value
66        larger than 0. Lemieux et al. (2015) recommend 15.
67      - The adjoint complains with extra recomputations so there is also a
68        new cpp-flag SEAICE_ALLOW_BOTTOMDRAG that is undefined by default in
69        order to postpone the problem
70      - compile the new code in lab_sea
71    o verification/halfpipe_streamice:
72      - update both TAF and OpenAD adm output (machine truncation differences)
73    
74    checkpoint65v (2016/04/08)
75    o verification/advect_xz:
76      - increase overlap size from 3 to 4 and add new secondary test for PQM
77        advection scheme (with mono & wino limiter).
78      - change main exp. to test PPM (with weno limiter) adv.scheme on Temp.
79    o model/src:
80      - new parameters "top_Pres" & "seaLev_Z" (replacing Ro_SeaLevel and recently
81        added phi0Ref) to set vertical axis origin and phiRef origin;
82        keep Ro_SeaLevel for backward compatibility (with a warning).
83       According to coordinate and fluid type:
84        OCN in Z: top_Pres(Ref) (=rhoConst*PhiRef(1)), seaLev_Z (=rF(1), @ the top)
85        ATM in Z: top_Pres(Ref) (=rhoConst*PhiRef(1)), seaLev_Z (=rF(Nr+1) @ bottom)
86        OCN in P: top_Pres (=rF(Nr+1)), seaLev_Z (= PhiRef(Nr+1)/g, @ the top)
87        ATM in P: top_Pres (=rF(Nr+1)), seaLev_Z (= PhiRef(1)/g, @ the bottom)
88      - remove Ro_SeaLevel from ATM experiment parameter files;
89      - in tutorial_global_oce_in_p, remove Ro_SeaLevel and set top_Pres to the
90        complement; update output.txt (changes at machine truncation level).
91    o pkg/seaice/seaice_evp.F
92      - simplify computation of deltaZ and zetaZ to simple averaging following
93        Bouillon et al. (2013). This removes a lot of code, but also changes
94        verification experiment lab_sea.hb87 -> updated
95    
96    checkpoint65u (2016/03/14)
97    o pkg/generic_advdiff:
98      - from Darren: add PPM and PQM advection schemes (number 40-42 and 50-52)
99        with 2 types of limiter (see: Engwirda & Kelley, submit. to JCP);
100        Note (from Darren): unlimited PPM/PQM scheme (40 & 50) are just for
101        testing and not for actual use.
102    o model/src:
103      - add parameter "phi0Ref" to specify reference [pressure/geo] potential at
104        origin r = rF(1);
105      - add options (parameter selectP_inEOS_Zc) to select which pressure to use
106        in EOS for height coordinate: enable to include NH Pressure or to use
107        more accurate pressure vertical profile; options not linked to EOS type
108        (as previously, e.g., JMD95P/JMD95Z) but set default according to EOS type;
109      - start to implement variable gravity (along vertical): for now, only with
110        z-coords (not even z*).
111      - add Ideal Gas equation of state for height coordinate.
112      - update OpenAD output (affected at machine truncation level) of exp:
113        global_ocean.90x40x15, OpenAD (std) and tutorial_global_oce_biogeo.
114    o pkg/exf:
115      - add ALLOW_EXF_OUTPUT_INTERP cpp switch to output the result
116        of exf interpolation (before any rescaling, rotation or interpolation
117        to velocity point) for each field that gets loaded from file. This option
118        identically mimics the input file organization (e.g. record numbers in year
119        by year input files) besides the change in horizontal grid.
120      - add rotateStressOnAgrid run-time switch so that wind stress fields
121        can be provided on the A-grid in zonal/meridional direction and
122        rotated on the fly. This only applies to the case when the exf
123        interpolation is off and rotateStressOnAgrid is false by default.
124    o model/src:
125      - rename internal parameter "useDynP_inEos_Zc" to "storePhiHyd4Phys" (since
126        it's also used with pkg/atm_phys) and add few more parameters (but still
127        inactive, src code yet to come)
128    
129    checkpoint65t (2016/02/10)
130    o pkg/atm_phys:
131      - from Ruth Geen: add optical depth dependence on CO2 concentration.
132    o model/src:
133      - fix vertical inter/extra-polation of density factor rhoFacF (for anelastic)
134        for the case setCenterDr=T (delRc set from "data"); add output of rhoFacC&F.
135        Update output of exp. deep_anelastic (changes at truncation level).
136    o tools:
137      - add a hack in "remove_comments_sed" (used only with TAF) for recent
138        version of OpenMPI (shipped with FC.23): comment out the new header
139        file "mpif-sizeof.h" which causes problems to TAF.
140    o pkg/seaice:
141      - change the termination criterion so that maxits (SEAICElinearIterMax)
142        has an effect
143      - unify iteration parameters for implicit solvers (JFNK and Picard)
144        SEAICEnonLinIterMax replaces SEAICEnewtonIterMax/NPSEUDOTIMESTEPS
145        SEAICElinearIterMax replaces SEAICEkrylovIterMax/SOLV_MAX_ITER
146        SEAICEpreLinIterMax replaces SOLV_MAX_ITER in preconditioner
147        SEAICEpreNL_IterMax replaces NPSEUDOTIMESTEPS in preconditioner
148        SEAICEnonLinTol     replaces JFNKgamma_nonlin
149      - remove S/R SEAICE_FGMRES_DRIVER and put content into S/R SEAICE_JFKN
150      - add new Picard-Krylov solver, compile with SEAICE_ALLOW_KRYLOV and
151        use with SEAICEuseKrylov
152    o pkg/seaice/seaice_lsr.F
153        fix small bug: replace zetaZ by zetaZloc in S/R seaice_lsr_rhsu/v; only
154        relevant if SEAICEuseStrImpCpl=T, and even then it does not seem to have
155        an effect.
156    o pkg/seaice: add two new parameters
157      - SEAICEuseLSR to simplify the logic in seaice_dynsolver (this
158        parameter is not in any namelist)
159      - SEAICEusrPicardAsPrecon to allow s/r seaice_lsr to be used as
160        a preconditioner for the non-linear Newton iteration of the JFNK
161        solver
162    o pkg/seaice/seaice_lsr.F: replace 1./SEAICE_deltaTdyn with recip_deltaT,
163      affects some experiments at truncation level:
164      - global_ocean.cs32x15.icedyn (11 digits),
165      - global_ocean.cs32x15.seaice (11 digits),
166      - seaice_itd (12 digits), seaice_itd.lipscomb07 (12 digits) -> update
167      - also update global_ocean.cs32x15 adjoint and tangent-linear results
168    o pkg/salt_plume & pkg/thsice:
169      - for coupled  set-up with pkg/thsice in ATM and pkg/salt_plume in OCN,
170        connect salt_plume flux to ATM-OCN coupling pkgs interface:
171       a) in ATM: also cumulate salt-plume flux in S/R THSICE_SALT_PLUME (for
172         export to coupler interface) even without compiling pkg/salt_plume ;
173       b) in OCN: apply coupler salt-plume flux to pkg/salt_plume field
174         (saltPlumeFlux) just before exch call, in S/R SALT_PLUME_DO_EXCH.
175    o pkg/dic:
176      - use the updated seaice fraction (from seaice pkgs) for DIC forcing
177        instead of the previous time-step value ; done in new S/R DIC_FIELDS_UPDATE
178        called from the top of dic_biotic_forcing.F (instead of in DIC_FIELDS_LOAD);
179      - move also update with values from ATM-OCN Coupler in the same new S/R
180        (previously done in ocn_apply_import.F).
181    o tools/adjoint_options:
182      - specify explicitly "-f77" or "-f90" in default ad-optfile since TAF (default)
183        has been changed on Jan 14, 2016.
184    o pkg/ggl90:
185      - add alternative discretisation of vertical shear (off by default), to
186        compute the mean (@ grid-cell center) of vertical shear compon instead of
187        vertical shear of mean flow (@ grid-cell center).
188      - add correct parenthesis in ALLOW_GGL90_SMOOTH code to get the same truncated
189        results on adjacent faces of cubed-sphere grids; this fix the restart.
190    o pkg/atm_compon_interf:
191      - skip time-ave over cpl_atmSendFrq of Sea-Level Pressure (atmSLPr) and just
192        pass last value, stored directly before export to CPL ;
193        Note: this affects results of Coupled set-up where OCN uses useImportSLP=T
194      - remove atmSLPr from pickup files (no longer needed for restart)
195    
196    checkpoint65s (2016/01/13)
197    o eesupp & genmake2:
198       - first check for Function ETIME and, if it fails, then check for subroutine
199         ETIME and consistent output; use the appropriate version in timers.F
200    o model/src:
201      - to check restart test, add option to apply EXCH to U,V earlier, just before
202        integr_continuity; turned off by default.
203    o pkg/dic:
204      - remove CPP option USE_ATMOSCO2 (not needed)
205    o tools/tst_2+2:
206      - try to ignore difference between +0 and -0 in binary file, causing test
207        to fail for no good reason.
208    o eesupp & genmake2:
209      - put back modif from Jinxuan Zhu - change etime fct call to S/R call -
210        but also check (in genmake2) that test runs and returns meaningful results.
211    o coupler pkgs:
212      Finish implementation of optionally-exchanged variable switches (started on
213       Nov 12) with addition of few more exchanged fields, including 2-way exchange
214       of pkg/thsice vars to allow to use seaice dynamics (from pkg/seaice) & seaice
215       advection in OCN component; this requires sequential coupling.
216      coupler (pkg/atm_ocn_coupler):
217      - add argument msgUnit and iter number to CPL_SEND/RECV_ATM/OCN_FIELDS
218        routines (useful for debug).
219      - only export/import optionally exchanged fields (RunOff, seaice, Salt-Plume
220         flux, DIC fields) if corresponding switch is ON.
221      - add option to export RunOff to OCN (to use for DIC river input)
222      - add 2-way thSIce vars exchange; check for consistent cpl_sequential setting.
223      components (pkg/atm_ & ocn_compon_interf):
224      - to save memory space in ATM & OCN comp: add some #ifdef ALLOW_${PKG} around
225        optionally exchanged fields; add a check & stop in cpl_readparms.F.
226        ATMCPL.h: ALLOW_LAND for RunOff, ALLOW_THSICE for seaice, ALLOW_AIM for CO2;
227        OCNCPL.h: ALLOW_SALT_PLUME, ALLOW_DIC for DIC, ALLOW_THSICE for 2-W thsice.
228      - rename:   fracIce     -> sIceFrac_cpl (<- match coupler var name)
229        + in ATM: fracIceTime -> sIceFracTime ; seaIceTime -> sIceMassTime.
230      - add 2-way thSIce vars exchange ; add Salt-Plume flux ; add RunOff in OCN.
231      - hold in common block coupler optionally-exchanged variable switch
232        and set default "useImportXXX" accordingly; + check & stop if inconsistent.
233      - add diagnostics for all imported fields from coupler (in both OCN & ATM);
234        this is intended to replace the OCN cplFldtave.* output files (not updated
235        to contain new additional exchanged fields).
236    o pkg/dic:
237      - fix an other bug (also from 2014/08/30) in dic_atmos.F, in dic_int1=3 code.
238    o pkg/thsice:
239      - when coupled to ATM (useCoupler) with thSIce_skipThermo=T, skip reading
240        and writing of thsice pickup files.
241    o pkg/atm_compon_interf:
242      - move all field individual export-call out of cpl_export_import_data.F
243        into new S/R ATM_EXPORT_FIELDS
244    o pkg/atm_compon_interf:
245      - store state variables (for now, only thSIce fields) just before beeing
246        exported (in cpl_export_import_data.F, like on ocean side) instead of from
247        atm_store_my_data.F like all exported fluxes.
248      - new version of pickup_cpl: write field names into meta file and read meta
249        file to find field postion in pickup. Also only write/read fields meeded for
250        restart (same logic as main pickup file ; also using pickupStrictlyMatch)
251    o pkg/dic:
252      - fix bug (added on 2014/08/30) in dic_atmos.F for the case dic_int1= 2 or 3.
253    o pkg/seaice: add new parameter SEAICEpressReplFac to choose between
254        pressure replacement method (=1., default) or original Hibler (1979) (=0.)
255        value can be from domain [0,1] to average between the two methods
256    o pkg/atm_phys:
257      - allow to provide 2-d map of albedo and mixed-layer depth from files (but
258        hold fixed in time).
259    
260    checkpoint65r (2015/12/21)
261    o pkg/seaice:
262        fix bug in tridiagonal solvers for SEAICE_OLx/y>0, this affects the JFNK
263        solver (offline.dyn_jfnk) and global_ocean.cs32x15.seaice -> updated
264    o pkg/seaice:
265      - fix a bug in computing areaS in (J-J -> J-1) that affects runs
266        when SEAICEscaleSurfStress=.TRUE.,
267      - apply areaW and areaS in S/R seaice_calc_lhs
268    o pkg/atm_phys:
269      - add diagnostics for 3-D, Nr+1 levels diagnostics of radiative fluxes
270        (shortwave & longwave, net & downward) and diagnostics of temp. tendency
271        for individual contribution (convection, LSC cond, radiation)
272      - add Ruth Geen etal, GRL 2016, radiation options (see paper supp.
273        information); activated with: solar_exponent=0. and wv_exponent=-1.
274    o pkg/ggl90:
275      - within IDEMIX add upper limit for horizontal group velocity to
276        avoid instability problems in the explicit horizontal diffusion term for
277        long time steps or high resolution
278    o pkg/diagnostics:
279      - simplify setting of local-array size in diagstats_output.F: uses "numLevels"
280        (from DIAGNOSTICS_SIZE.h) to allow to write out more than Nr levels.
281    o testreport:
282      - remove "-v" (verbose option) in default mpirun command.
283    o pkg/seaice/seaice_growth:
284      - catch potential division by zero in ITD code, does not change
285        verification results
286    o pkg/ecco:
287      - retire old codes to the Attic. The calls to retired functions are
288        left in a commented form in case they ever need to be re-activated.
289      - ecco_check.F: issue warning if any old CPP option is
290        defined that corresponds to retired codes -- then stop.
291    o pkg/atm_compon_interf:
292      - change seaice fraction (use for OCN dic surf.flux) stored and sent to
293        coupler: use last time-step value instead of average over cplSendFrq_iter
294        time-step, similar to what is done for seaIceMass.
295        This will affect results (pkg/dic) of coupled ATM-OCN+dic set-up.
296    o eesupp & genmake2:
297      - from Jinxuan Zhu: change etime fct call to S/R call (fix gfortran ETIME);
298        <= remove until a fix is found for some ifort version on ia32 machine.
299    o pkg/seaice/seaice_evp:
300      - refine residual computation
301    
302    checkpoint65q (2015/11/18)
303    o pkg/seaice/seaice_evp:
304      - fix residual computations so that they no longer affect the actual
305        simulation code
306      - fix seaice_readparams to be able to actually set new parameters
307        SEAICEaEVPcStar and SEAICEaEVPalphaMin, also fix logic a little
308    o model/src:
309      - fix wrong truncation (single prec) from "FLOAT" function in expressions
310        like: deltaT*FLOAT(myIter) when myIter is large:
311         a) replaced by DFLOAT (if not seen by TAF);
312         b) remove "FLOAT" and use implicit type conversion (if seen by TAF).
313    o pkg/aim_v23:
314      - write/read the expected CO2 pickups (from S/R AIM_DO_CO2): fix reading
315        when pickupSuff is set ; do write rolling pickups + at the end of the run.
316    o pkg/atm_ocn_coupler + ocn_compon_interf:
317      - in prep for using pkg/seaice Dyn in coupled set-up, implement sequential
318        coupling option-1: ATM -(cpl)-> OCN and then OCN -(cpl)-> ATM ;
319        add corresponding call in DO_OCEANIC_PHYS.
320    o coupler pkgs:
321      Start a new way to set-up optionally-exchanged variables (previously, only
322       there for exchange_DIC): switch on/off from 1 place, at run-time, in coupler
323       data.cpl (new) instead of at compile time in ATMIDS.h & OCNIDS.h ;
324       send switch to ATM & OCN compon before reading their own "data.cpl" (so that
325       compononent param default can be set accordingly).
326      Note: this new switch (cpl_exchange_[xxx]) is not a per variable switch
327       but rather applies to a group a fields (going both ways like for DIC)
328       and corresponds to an option of coupling config.
329      coupler (pkg/atm_ocn_coupler):
330      - change parameter file from "data" to "data.cpl" (in cpl_read_params.F),
331        and read namelist directly (without eessup S/R calls) instead of
332        in the very un-flexible old way, 1 param per line, in fixed order;
333      - add error-counter to track errors (e.g., missing "data.cpl") and to stop
334        cleanly in CPL_CHECK_CPLCONFIG
335      - add new coupling-exchange selectors (some not yet active) including
336        cpl_exchange_DIC (to set to 3 to replace atmCpl_exchange_DIC=T in ATMIDS.h
337                                             and ocnCpl_exchange_DIC=T in OCNIDS.h);
338      - add 2 new S/R (CPL_SEND_ATM/OCN_CPLPARMS) to send coupler-params to each
339        component ; called directly from coupler.F, after comp. registrations;
340      - rename few variable-ID names (in ATMIDS.h & OCNIDS.h):
341         atm/ocnSeaIceName --> atm/ocnSIceMassName ; atm/ocnFCO2Name ->
342          -> atm/ocnCO2FluxName ; atm/ocnWSpdName --> atm/ocnWindSpdName
343      components (pkg/atm_ & ocn_compon_interf):
344      - add ATM/OCN_CPL_OPTIONS.h in component pkgs and include the corresponding
345        CPP header file in all pkg source files.
346      - move checking of comp. configs out of cpl_exch_configs.F into new S/R
347        ATM/OCN_CHECK_CPLCONFIG;
348      - add error-counter to track errors (e.g., in "data.cpl") and to stop
349        cleanly in ATM/OCN_CHECK_CPLCONFIG;
350      - add new S/R CPL_IMPORT_CPLPARMS to import coupling-exchange selectors
351        from coupler ; called from initialise_fixed.F, after PACKAGES_BOOT and
352        before PACKAGES_READPARMS;
353      verification/cpl_aim+ocn/:
354      - update ATMIDS.h & OCNIDS.h (in shared_code) and use new parameter file
355        "data.cpl" for coupler (in input_cpl).
356    o eesupp/inc:
357      - change the MPI-global-sum default (in CPP_EEOPTIONS.h) to:
358        #define GLOBAL_SUM_ORDER_TILES (only affects MPI built of global_sum_tile.F)
359        to always cumulate tile local-sum in the same order (still uses
360        MPI_Allreduce like standard code).
361      - in verification experiment code, remove local CPP_EEOPTIONS.h_mpi files
362        that are now identical to standard version (in eesupp/inc).
363    o pkg/shelfice:
364      - add SHELFICETransCoeffTFile for initializing spatially varying
365        heat and salt transfer coefficients
366    o pkg/atm_compon_interf & ocn_compon_interf:
367      - combine into 1 (new) S/R CPL_EXPORT_IMPORT_DATA the two previous
368        S/R CPL_EXPORT_MY_DATA & CPL_IMPORT_EXTERNAL_DATA
369      - move bi,bj loops inside S/R OCN_STORE_MY_DATA
370    o pkg/atm_ocn_coupler:
371      - initialise to zero ATMVARS.h & OCNVARS.h arrays.
372    o pkg/rbcs:
373      - select RBCS-mask for Temp & Salt the same way as for pTracer ; this allows
374        to compile with maskLEN=1 when all tracers use the same RBCS-mask.
375      - add a short report (to STDOUT) about RBCS-mask settings.
376    
377    checkpoint65p (2015/10/23)
378    o pkg/seaice/seaice_evp.F: fix store directives and key computations, since
379        there is no adjoint test for EVP, we don't know what it does to the adjoint
380        solution, but at least there are no more recomputation warnings left
381    o pkg/seaice/seaice_evp.F: slight modification of averaging so that EVP stands
382        a chance of giving the same results as a fully converged VP (JFNK) solver
383    o tools/adjoint_options/adjoint_diva:
384      - fix bug (typo) in Tang-Linear FLAGS setting for MPI + DIVA
385    o pkg/streamice:
386      - spotted bug in streamice_driving_stress using dyG where should have been dxG
387    o pkg/exf:
388      - remove STOP statement that prevented to use wind or (wind-)stress
389        interpolation for constant-in-time forcing fields (wind/stress period = 0).
390    o pkg/seaice:
391      - replace SEAICE_EVP_USE_ADAPTATION by run time parameters, requires
392        5 additionals 2D fields and 6 new store directives
393      - change logic in seaice_readparms.F: EVP code can now be turned on in
394        various ways, setting SEAICE_deltaTev is no longer required,
395        alternatively set SEAICE_evpAlpha/Beta, SEAICEuseEVPstar, SEAICEuseEVPrev,
396        or SEAICEaEVPcoeff
397    o pkg/shelfice/shelfice_thermodynamics.F
398      - redefining uLoc/vLoc to u/v, instead of 2u/v
399    o pkg/seaice/seaice_evp.F: introduce "adaptive EVP" by Madlen Kimmritz
400      - this is an intermediate state of a truely converging EVP that has
401        the potential of outperforming implicit VP methods, I do not recommend
402        using it yet.
403      - for now, "adaptive EVP" is turned on by setting SEAICE_EVP_USE_ADAPTATION
404        and all parameters are hardwired
405      - for convergence it still requires very smooth regularisations, that means,
406        if SEAICE_DELTA_SMOOTHREG is defined, deltaCreg=deltaC+deltaMin, which is
407        different from the VP case with deltaCreg=sqrt(deltaC**2+deltaMin**2); also
408        specific averaging appears to be required, still subject to tuning
409      - still needs cleaning and I need to turn parameter into runtime parameters
410      - add code to compute and print residuals of iteration, compile with
411        defining ALLOW_SEAICE_EVP_RESIDUAL to enable it
412    o pkg/seaice/seaice_evp.F: fix a bug (factor of four in front of e12Csq)
413      that entered with r1.54 on Sep04, 2015, -> update results
414    
415    checkpoint65o (2015/09/14)
416    o pkg/mom_vecinv & mom_common:
417      - add deep-atmosphere geometry factor in mom_calc_visc.F + in routines
418        called from there.
419      - add anelastic and deep-atmosphere geometry factor in pkg/mom_vecinv ; this
420        allows to use Vector-Invariant form in deep atmos and anelastic formulation
421    o pkg/seaice: introduce fast ice parameterisation following Itkin et al. (2015)
422      and Koenig-Beatty+Holland (2012)
423      - two new parameters SEAICE_tensilFac and SEAICE_tensilDepth
424      - global 2D field tensileStrength, computed in seaice_calc_ice_strength
425      - requires an extra input argument for S/R seaice_calc_viscosities
426      - tensileStrength's depth dependence is different from Itkin et al. (2015)
427        (to be changed and played with, for now exponential)
428    o pkg/seaice: introduce new parameter SEAICEscaleSurfStress (default = .FALSE.)
429      - if TRUE scale ice-ocean and ice-atmosphere stress acting on sea ice
430        by AREA according to Connelly et al. (2004), JPO.
431      - For EVP and the LSR solver, the implicit part of the drag term is
432        the only non-zero term in the denominator when there is no ice (which
433        prevented running the model with zero ice-ocean drag). If
434        SEAICEscaleSurfStress = .TRUE., this results in a division by zero
435        (or zero main diagonals BU/BV) which need to be caught. A practical
436        consequence is that for open water, the momentum equation reduce
437        to trivially 0 = 0 + 0 (for EVP). For LSR, BU/BV are reset to 1, if
438        they happen to be zero, often leading to a non-zero solution over
439        open water.
440    o pkg/seaice: revise EVP code (seaice_evp.F) in preparation for a more
441        efficient EVP method.
442      - introduce area-weighted averages for e12 (analogously to
443        seaice_calc_viscosities.F); this totally changes lab_sea.hb87 (2 digits
444        remain, but also changing the order of terms in the previous average
445        changed the results as much) -> update experiment
446      - add SEAICE_DELTA_SMOOTHREG code
447      - disentangle computation of zetaC/deltaC and zetaZ/deltaZ, also for
448        TEM-code
449      - adjust loop bounds so that only required fields are computed
450      - add new averaging code for zetaZ/deltaZ (again similar to
451        seaice_calc_viscosities.F), inactive by default for now (will change
452        results again), but will replace old code eventually
453    o eesupp/src:
454      - add an other alternative for multi-proc GLOBAL_SUM (in global_sum_tile.F)
455        to always cumulate tile local-sum in the same order
456        (option #define GLOBAL_SUM_ORDER_TILES in CPP_EEOPTIONS.h).
457        Still uses MPI_Allreduce (like standard code) but on array of tiles
458        and should be faster than GLOBAL_SUM_SEND_RECV code.
459      - switch almost all verification experiments that use GLOBAL_SUM_SEND_RECV
460        (defined in CPP_EEOPTIONS.h_mpi) to GLOBAL_SUM_ORDER_TILES instead.
461      - add CPP_EEOPTIONS.h_mpi with GLOBAL_SUM_ORDER_TILES defined in 14 more exp.:
462         aim.5l_cs, cheapAML_box, deep_anelastic, dome, fizhi-cs-32x32x40,
463         fizhi-cs-aqualev20, fizhi-gridalt-hs, global_ocean_ebm, matrix_example,
464         natl_box, solid-body.cs-32x32x1, tutorial_advection_in_gyre,
465         tutorial_baroclinic_gyre and tutorial_held_suarez_cs.
466    
467    checkpoint65n (2015/07/29)
468    o pkg/thsice:
469      - add a warning when used with pkg/aim but without updating SST
470        (stepFwd_oceMxL=F & useCoupler=F & tauRelax_MxL<>-1 ).
471    o pkg/offline:
472      - change where Offline-Fields are loaded, from load_fields_driver.F to
473        directly within FORWARD_STEP, just after updating iter number and time;
474      - move setting of GM and KPP diffusivity out of OFFLINE_FIELDS_LOAD into new
475        S/R OFFLINE_GET_DIFFUS that is called towards the end of DO_OCEANIC_PHYS;
476       These changes allow:
477        a) to recover exactly on-line results using deltaToffline=deltaTClock,
478        tested (using offlineIter0= nIter0 -1 and offlineTimeOffset= -deltaT/2)
479        both with Lin & Non-Lin Free-Surf, both with staggerTimeStep & synchronous
480        time-step, both with GM & KPP files and with recomputing these fields;
481        b) no needs to switch on staggerTimeStep anymore;
482        c) simplify rescaling of offline horiz. velocity with Non-Lin Free-Surf.
483      - update output of experiment tutorial_dic_adjoffline (only 3 digits left).
484    o pkg/offline:
485      - change (rarely used) offset-iteration parameter to an offset time (in s):
486        can easily recover previous offset-iter effect by setting offset-time
487        (offlineTimeOffset) to offset-iter x deltaToffline;
488      - do not turn-off Temp & Salinity surface relaxation when using KPP (used
489        in KPP as part of surface buoyancy forcing) in offline run.
490      - fix ptracers KPP non-local term in the case where KPP is re-computed.
491    o OpenAD
492      - Adding preliminary ggl90 test to OpenAD verification.
493        Config. with ggl90 currently diverges after 64 time steps
494        so will need more work to become more stable
495      - Adding preliminary kpp test to OpenAD verification.
496        required small tweakes in kpp_routines.F
497      - Merge and update from Krishna Narayanan's contrib area:
498        * Add one variable for preliminary OpenAD DIVA
499        * Add replacement time-stepping for OpenAD DIVA
500        * genmake2 flag -diva (but only for OpenAD; preliminary)
501        * required modifs for OAD_support
502        successful preliminary test for tutorial_global_oce_biogeo/
503    o pkg/seaice:
504      - initialise deltaC in seaice_lsr, cosmetic changes in seaice_lsr
505      - add cpp-flag SEAICE_DELTA_SMOOTHREG for option of regularising
506        delta with a smooth function in s/r seaice_calc_viscosity
507        (no effect on EVP)
508      - rename local suffix "sqr" into "sq" for more consistent variable names
509    o pkg/seaice:
510        add new parameter SEAICE_deltaMin that is used ***only***
511        for regularizing Delta (and nothing else, like the parameter
512        which is also used for all sorts of things SEAICE_EPS).
513        Defaults to SEAICE_EPS for backward compatibility only.
514    o pkg/seaice: replace erroneously storing e12Csqr on the wrong tape with
515        the wrong key by inialising it before use -> fixes a recomputation
516        problem but does not fix the gradient
517    o pkg/layers:
518      - move resetting of flux arrays to outside the iLa loop
519        (this caused layers_diapycnal to not work with more than one layer coord.)
520      - fix bug in calculation of layers_recip_delta in layers_init_fixed.F
521    o pkg/layers:
522      - remove from common block 3D layers fields (used to diagnose transport
523        in tracer coords) and declare them as local arrays in layers_calc.F
524    o pkg/seaice:
525      - Rename SEAICE_VECTORIZE_LSR_ZEBRA to SEAICE_LSR_ZEBRA and define it
526        in lab_sea forward experiment (changes results -> updated)
527      - update adjoint experiment lab_sea after cleaning up seaice_lsr_tridiagu/v
528    o pkg/seaice: modify seaice_lsr.F in order to improve the gradient
529       computations; for SEAICE_VECTORIZE_LSR
530      - move the loops over which the tridiagonal solvers (seaice_lsr_tridiagu/v)
531        sweep to the outside,
532      - remove store directives and add "CADJ loop sequential" directives
533        in analogy to model/src/solve_tridiagonal.F
534      - replace many "#ifdef SEAICE_VECTORIZE_LSR_ZEBRA" by variable loop
535        boundaries to yield more readable code. This has also the charming side
536        effect that your can use SEAICE_VECTORIZE_LSR_ZEBRA without
537        SEAICE_VECTORIZE_LSR (i.e. adjoint without recomputations in
538        seaice_lsr_tridiagu/v now requires either of these flags, vectorization
539        still requires SEAICE_VECTORIZE_LSR with SEAICE_VECTORIZE_LSR_ZEBRA as
540        an additional option)
541       The tridiagonal solvers are now completely analoguous to solve_tridiagonal.F
542       but the adjoint gradients (which are affected by this change) still explode.
543    o coupler (atm & ocn _compon_interf):
544      - avoid using Exch2 IO mapping if not suitable.
545    
546    checkpoint65m (2015/06/15)
547    o pkg/layers:
548      - clean-up old parameters setting (from Sep 2012):
549        + remove old parameters setting from common block (declared locally);
550        + stop if any old parameter is mixed with new parameters;
551        + check for valid or consistent parameter setting (e.g., layers_name)
552      - check that layers_bounds for Pot.Density are in the right range;
553        this is supposed to catch un-updated setting after recently shifting
554        potential density field "prho" by -1000 (now in "sigma" scale).
555    o pkg/layers:
556      - Added missing call to layers_fill for keeping track of tottend in
557        pkg/diagnostics/diagnostics_fill_state.F
558    o pkg/layers:
559      - added CPP flux LAYERS_FINEGRID_DIAPYCNAL to disable fine-grid binning
560        of diapycnal fluxes
561    o pkg/layers:
562      - reverted changes to interpolation to previous treatment; there
563        was never actually a problem
564    o pkg/layers:
565      - fix interpolation of layers tracers in the presence of partial cells
566      - add lots of new functionality to compute water mass transformation
567        (enabled by CPP flag LAYERS_THERMODYNAMICS)
568      - add new calls from main code (diags_oceanic_surf_flux.F,
569        thermodynamics.F, impldiff.F) and gad to save the necessary fields
570        for layers_thermodynamics calculations
571    o pkg/ptracers:
572      - add capability of stepping a passive tracer forward without advection
573        by setting PTRACERS_advScheme to 0.
574    o pkg/diagnostics:
575      - add few (threads) _BARRIER around any update of "diag_pkgStatus".
576    o pkg/layers:
577      - shift potential density field "prho" by -1000 for density layer averaging so
578        that it corresponds to usual "sigma" definition (i.e., rho(p=const)-1000);
579        Note that density bin boundaries (layers_bounds in data.layers) have
580        to be set accordingly (i.e., shifted, in sigma scale).
581    o pkg/layers:
582      - fix snap-shot output of layer thickness @ V.pt and output of pot.density
583      - fix calculation of layer non-weighted velocity and layer probability
584      - add diagnostics for pot.density used for layer averaging
585    o pkg/seaice:
586      - seaice_calc_viscosity.F: change computation of deltaC**2 to ensure
587        positiveness, modify a few comments and improve variable names,
588      - the changed computation of deltaC affects most seaice-related
589        experiments at the truncation level.
590        seaice_itd.thermo is affected by far the most, with
591        only 7 digits of agreement remaining; update experiments.
592    
593    checkpoint65l (2015/05/04)
594    o pkg/shelfice:
595      - in shelfice_thermodynamics.F, if SHELFICEBoundaryLayer=.true., then set
596        factor drKp1 to zero where it is negative (ie. do not use
597        SHELFICEBoundaryLayer if hFacC>1)
598      - the same for factor drLoc in shelfice_forcing.F
599    o tools/genmake2: move FEXTRAFLAGS from FFLAGS to FOPTIM to avoid a problem
600        with modules in ptracers, when using testreport option "-small_f"
601    o pkg/seaice/seaice_growth.F (in case of SEAICE_ITD)
602      - replace tmpscal1**1.36 by faster exp(1.36*log(tmpscal1))
603    o verification/testreport
604      - add new option -small_f
605        with this option testreport first makes the target small_f (*.f files)
606        before running make (all). This is useful for explicit inlining when
607        all sources need to be full available.
608    o pkg/exf/exf_interp.F:
609        remove previous changes related to reverse (decreasing) input grids latitude
610    
611    checkpoint65k (2015/04/01)
612    o pkg/ecco:
613        fix missing cosphi initialization; use eccoiter in place of optimcycle;
614        if autodiff is not compiled then use READ_REC_XY_RL/READ_REC_XYZ_RL
615        instead of active read/write
616    o pkg/ctrl:
617        if autodiff is not compiled then use READ_REC_XY_RL/READ_REC_XYZ_RL
618        instead of active read/write.
619    o pkg/autodiff: make autodiff_readparms.F and autodiff_whtapeio_sync.F
620        return if .NOT.useAUTODIFF
621    o pkg/seaice: add CPP brackets (cost function related).
622    o model/src:
623        add useAUTODIFF run time switch.
624    o pkg/exf/exf_interp.F:
625        add code to allow input grids with latitude starting in the north (i.e. when
626        j=1 corresponds to northern edge of field); modify global_with_exf to test
627        this feature.
628    o verification/testreport:
629      - replace "grep -A3" with POSIX conformal sed command, because there are
630        implementations of grep that cannot do contextual searches
631      - replace "cat -n" by "nl" (two occurrences), because not all implementations
632        of "cat" have the option "-n"
633    o model/src:
634        add new file gsw_teos10.F that contains 3 functions, more or less a copy
635        of the gsw_toolbox.f90 of the TEOS-10 fortran interface, that are used to
636        convert from conservative to potential temperature. For now they are not
637        called anywhere.
638    o pkg/ggl90: make "useIDEMIX" useful
639      - re-organize code in s/r ggl90_calc a little to move computations that
640        are different for idemix into separate loops (changes verification
641        experiment idemix at truncation level, 12 digits remain -> updated)
642      - requires 2 new 2D fields KappaM, verticalShear
643      - make hFacI and recip_hFacI local 3D variables that are passed to
644        s/r ggl90_idemix
645      - fix and improve some comments
646    
647    checkpoint65j (2015/02/25)
648    o pkg/openad
649      - synchronize seawater.F with version in model/src: replace routine
650        body of sw_temp by calling sw_ptmp and fix/add a few comments.
651    o pkg/mnc:
652      - change default value of pickup_read/write_mnc params to FALSE
653        (since few features are missing in reading MNC pickup files).
654    o model/src:
655      - change default (background) vertical diffusivity for salt to be the
656        temperature (background) vertical diffusivity.
657      - change background vertical diffusivity in vertical mixing pkgs ggl90,
658        kl10, my82 and pp81 from temperature diffusivity to salinity diffusivity.
659        This makes ptracers default diffusivity (that uses salt diffKr) more
660        consistent with vertical mixing schemes.
661    o verification/testreport:
662      - fix typo in "-pcls" option ;
663      - put temp files in /tmp (instead of in local dir)
664      - add option "-ncad" to use genmake2 new option "-nocat4ad"
665      - allow to use "-j" option (for multi-procs make) for AD, OAD and TLM.
666    o pkg/ggl90 (idemix code):
667      - apply few fixes ; add some missing "_d 0" ; update output of exp.
668        global_ocean.90x40x15.idemix
669    o OpenAD
670      - enable active file I/O and begin removal of work-around code
671        for OpenAD for handling control variables (memory vs. active files)
672      - new CPP options file OPENAD_OPTIONS.h
673      - revert to genarr2d gradient check for hs94.1x64x5
674      - (genarr3d tested by tutorial_global_oce_biogeo, tutorial_tracer_adjsens)
675      - gentim2d works for halfpipe_streamice but not yet hs94.1x64x5
676    o tools/genmake2:
677      - add option for an alternative Makefile (from Martin) where multiple
678        source files are sent to TAF (instead of all in one file).
679    o pkg/ggl90: add IDEMIX (Olbers and Eden, 2013)
680      - code provided by Carsten Eden as an extension of ggl90
681      - so far the code is turned on within ggl90 by setting a CPP-flag at
682        compile time; a runtime flag implementation is not yet complete
683      - tested in new verification experiment global_ocean.90x40x15.idemix
684    o verification:
685      - reduce length of the AD test run by half for experiments
686        global_ocean.cs32x15 (std + thsice) and isomip
687      - enable active file I/O for OpenAD, adjust verifications accordingly
688      - halfpipe_streamice: change gradient check from genarr2d to gentim2d
689    o verification/testreport:
690      - fix two non-POSIX sed statements so that there are no error messages
691        on Mac OS X
692      - replace hostname -s with hostname | sed 's/\..*$//'
693    o model/src/seawater.F:
694      - simplify SW_TEMP to just calling SW_PTMP with P and PR exchanged
695        (following the matlab code), which would have avoided the bug caught
696        by Matt (see below) in the first place
697    o pkg/shelfice:
698      - implement alternative discretisation of quadratic drag (selectBotDragQuadr)
699        and true distance in no-slip BC (bottomVisc_pCell) similar to bottom-drag.
700      - fix sign of friction tendency (no-slip BC) and fix u,v drag for thin
701        ice-shelf case (i.e., within surface level).
702      - add config summary in shelfice_check.F
703      - remove global variable recip_SHELFICElatentHeat and replace by a local
704        variable recip_latentHeat
705      - introduce diagnostics for friction velocity uStar (in case of
706        SHELFICEuseGammaFrict)
707      - change verification experiment isomip.htd:
708        + start from pickup (as input_ad at nIter0=8640)
709        + start from SHELFICEmassFile instead of SHELFICEloadAnomaly file
710        + test SHELFICEuseGammaFrict = .TRUE.
711        + test SHELFICEadvDiffHeatFlux = .TRUE.
712    o model/src:
713      - fix bug (Thanks to Matt) in function SW_TEMP (to convert Pot.Temp to
714        in-situ Temp) and in routine SW_TEMP (in pkg/openad);
715        update output of experiments global_with_exf.yearly and isomip (all 6).
716    o pkg/shelfice:
717      - change setting of kTopC to also be zero where there is no ice-shelf.
718      - zero out surface forcing arrays (for now, for T & S + EmPmR) where
719        ice-shelf is.
720      - first attempt to get RealFreshWaterFlux effects: for now, only without
721        SHELFICEboundaryLayer ; not consistent if using synchronous time-stepping.
722    o pkg/seaice: add the option to prescribe a fixed thickness PDF
723      for thermodynamic calculations
724      - because of divisions of the type 7/7 not exactly equal to 1, this change
725        affects results of some verification experiments by up to 4 digits:
726        global_ocean.cs32x15.seaice, lab_sea, lab_sea.fd, lab_sea.salt_plume,
727        seaice_obcs, seaice_obcs.seaiceSponge, seaice_obcs.tides
728        adjoint: lab_sea, lab_sea.noseaicedyn
729        -> updated
730    
731    checkpoint65i (2015/01/23)
732    o model/src:
733      - change units of frictionHeating field from W to W/m^2
734      - fix bug in frictional heating from stratospheric drag in
735        S/R ATM_PHYS_TENDENCY_APPLY_V
736      - with synchronous time-stepping: move resetting to zero of frictionHeating
737        field from load_fields_driver.F to thermodynamics.F ;
738      - add diagnostics for frictional heating.
739    o model/src & gmredi K3D:
740      - add frictionHeating field to pickup-files (for synchronous time-stepping)
741      - move ALLOW_EDDYPSI block out of DYNVARS.h and merge it into FFIELDS.h
742      - rename uMean,vMean --> uEulerMean,vEulerMean (+ change diagnostics name
743        and name in pickup file).
744      - fix arguments of few DIAGNOSTICS_FILL calls in gmredi_k3d.F
745    o model/src:
746      - move (from ini_forcing.F) initialisation of all arrays in header file
747        FFIELDS.h into new S/R ini_ffields.F ; this fix broken restart
748        (since Nov 2012) with option selectAddFluid=1.
749    o pkg/shelfice:
750      - change units (+ document) of newly added field "shelfIceMassDynTendency"
751      - upgrade from _RS to _RL shelficeMass & shelficeLoadAnomaly arrays.
752    o pkg/obcs: re-organize obcs_calc_stevens.F to prepare for passive tracers
753    o pkg/seaice: two new runtime parameters:
754      - SEAICE_cStar replaces the hard wired "20" in the strength formulation,
755        long overdue
756      - SEAICE_tensilFac: preparation for Koenig-Beatty+Holland (2012)
757        parameterization of tensil stress for fast ice (does not do anything yet)
758    o pkg/seaice/seaice_check.F: left over from restricted addtive Schwarz method
759        for LSR: move checking overlaps out of JFNK-if-block
760    o pkg/atm_phys:
761      - move copy of grid and dynamical fields out of atm_phys_driver.F into
762        new S/R ATM_PHYS_DYN2PHYS.
763      - fix level height for Linear Free-Surf case (to be consistent with
764        fixed-in-time pressure levels).
765    o pkg/mom_common (bottomdrag):
766      - average bottomDragFld (ALLOW_BOTTOMDRAG_CONTROL) from grid-cell center
767        to correct location (U & V point) in S/R MOM_U/V_BOTTOMDRAG;
768        update output (adm & tlm) of experiment global_ocean.90x40x15.bottomdrag.
769    o pkg/shelfice (u/v_drag):
770      - add one argument (the other velocity component) to S/R SHELFICE_U/V_DRAG;
771      - use SHELFICEDragLinear & SHELFICEDragQuadratic in shelfice_v_drag.F
772        (now similar to shelfice_u_drag.F)
773      - remove condition on bottomDragTerms when calling SHELFICE_U/V_DRAG
774        from mom_vecinv.F (similar to mom_fluxform calls).
775    o pkg/mom_common (bottomdrag):
776      - add one argument (the other velocity component) to S/R MOM_U/V_BOTTOMDRAG;
777      - add options for alternative discretisation of velocity norm in quadratic
778        bottom drag: averaging of grid-cell-center KE to U.point and V.point
779        (selectBotDragQuadr=0, original code) can produce noisy patterns; this
780        improves when averaging only the other component (e.g. vVel for U bottom
781        drag) using wet-point method (selectBotDragQuadr=2) or not (=1).
782      - add options (bottomVisc_pCell) to account for partial-cell in bottom
783        friction (no-slip BC) thus getting the true distance from the bottom;
784        off by default since this also reduces model stability (explicit bottom
785        friction). Changes produce different machine truncation with linear-drag
786        + no-slip BC: update output of experiments exp4.stevens (10 digits) and
787        front_relax (bvp & mxl, 10 & 11 digits).
788    o model/src & mom pkgs:
789      - add one more level to vertical viscosity local arrays (Nr+1, previously Nr)
790        since no-slip bottom BC uses viscosity @ k+1 to update velocity @ level k
791      - for now and until vertical mixing scheme are updated to fill up level Nr+1,
792        just copy level Nr value to level Nr+1.
793    o doc:
794      - add notes form Abhisek Chakraborty on how to close Heat & Salt budgets.
795    o pkg/shelfice:
796      - shelfice_init_varia.F, shelfice_init_fixed.F, shelfice_readparms.F,
797        SHELFICE.h: move array shelficemass to init_varia, initialise
798        from array shelficemassinit, which is set in init_fixed and
799        has option to be set from file; introduce array
800        shelficeMassDynTend array, set thru file in init_fixed
801      - NEW FILE: shelfice_step_icemass.F: update shelficemass from either
802        shelfIceFreshWaterFlux and shelficeMassDynTend or H_streamice in
803        pkg/streamice
804      - shelfice_thermodynamics.F: call shelfice_step_icemass if
805        SHELFICEMassStepping = .true.
806      - shelfice_ad_diff.list: add new subroutine shelfice_step_icemass.f
807    
808  checkpoint65h (2014/12/17)  checkpoint65h (2014/12/17)
809  o verification/global_ocean.90x40x15, global_ocean_ebm:  o verification/global_ocean.90x40x15, global_ocean_ebm:
810    - update to generic controls.    - update to generic controls.

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