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revision 1.2139 by mlosch, Tue Mar 3 15:57:00 2015 UTC revision 1.2239 by jmc, Mon Mar 14 13:31:47 2016 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint65u (2016/03/14)
8    o pkg/generic_advdiff:
9      - from Darren: add PPM and PQM advection schemes (number 40-42 and 50-52)
10        with 2 types of limiter (see: Engwirda & Kelley, submit. to JCP);
11        Note (from Darren): unlimited PPM/PQM scheme (40 & 50) are just for
12        testing and not for actual use.
13    o model/src:
14      - add parameter "phi0Ref" to specify reference [pressure/geo] potential at
15        origin r = rF(1);
16      - add options (parameter selectP_inEOS_Zc) to select which pressure to use
17        in EOS for height coordinate: enable to include NH Pressure or to use
18        more accurate pressure vertical profile; options not linked to EOS type
19        (as previously, e.g., JMD95P/JMD95Z) but set default according to EOS type;
20      - start to implement variable gravity (along vertical): for now, only with
21        z-coords (not even z*).
22      - add Ideal Gas equation of state for height coordinate.
23      - update OpenAD output (affected at machine truncation level) of exp:
24        global_ocean.90x40x15, OpenAD (std) and tutorial_global_oce_biogeo.
25    o pkg/exf:
26      - add ALLOW_EXF_OUTPUT_INTERP cpp switch to output the result
27        of exf interpolation (before any rescaling, rotation or interpolation
28        to velocity point) for each field that gets loaded from file. This option
29        identically mimics the input file organization (e.g. record numbers in year
30        by year input files) besides the change in horizontal grid.
31      - add rotateStressOnAgrid run-time switch so that wind stress fields
32        can be provided on the A-grid in zonal/meridional direction and
33        rotated on the fly. This only applies to the case when the exf
34        interpolation is off and rotateStressOnAgrid is false by default.
35    o model/src:
36      - rename internal parameter "useDynP_inEos_Zc" to "storePhiHyd4Phys" (since
37        it's also used with pkg/atm_phys) and add few more parameters (but still
38        inactive, src code yet to come)
39    
40    checkpoint65t (2016/02/10)
41    o pkg/atm_phys:
42      - from Ruth Geen: add optical depth dependence on CO2 concentration.
43    o model/src:
44      - fix vertical inter/extra-polation of density factor rhoFacF (for anelastic)
45        for the case setCenterDr=T (delRc set from "data"); add output of rhoFacC&F.
46        Update output of exp. deep_anelastic (changes at truncation level).
47    o tools:
48      - add a hack in "remove_comments_sed" (used only with TAF) for recent
49        version of OpenMPI (shipped with FC.23): comment out the new header
50        file "mpif-sizeof.h" which causes problems to TAF.
51    o pkg/seaice:
52      - change the termination criterion so that maxits (SEAICElinearIterMax)
53        has an effect
54      - unify iteration parameters for implicit solvers (JFNK and Picard)
55        SEAICEnonLinIterMax replaces SEAICEnewtonIterMax/NPSEUDOTIMESTEPS
56        SEAICElinearIterMax replaces SEAICEkrylovIterMax/SOLV_MAX_ITER
57        SEAICEpreLinIterMax replaces SOLV_MAX_ITER in preconditioner
58        SEAICEpreNL_IterMax replaces NPSEUDOTIMESTEPS in preconditioner
59        SEAICEnonLinTol     replaces JFNKgamma_nonlin
60      - remove S/R SEAICE_FGMRES_DRIVER and put content into S/R SEAICE_JFKN
61      - add new Picard-Krylov solver, compile with SEAICE_ALLOW_KRYLOV and
62        use with SEAICEuseKrylov
63    o pkg/seaice/seaice_lsr.F
64        fix small bug: replace zetaZ by zetaZloc in S/R seaice_lsr_rhsu/v; only
65        relevant if SEAICEuseStrImpCpl=T, and even then it does not seem to have
66        an effect.
67    o pkg/seaice: add two new parameters
68      - SEAICEuseLSR to simplify the logic in seaice_dynsolver (this
69        parameter is not in any namelist)
70      - SEAICEusrPicardAsPrecon to allow s/r seaice_lsr to be used as
71        a preconditioner for the non-linear Newton iteration of the JFNK
72        solver
73    o pkg/seaice/seaice_lsr.F: replace 1./SEAICE_deltaTdyn with recip_deltaT,
74      affects some experiments at truncation level:
75      - global_ocean.cs32x15.icedyn (11 digits),
76      - global_ocean.cs32x15.seaice (11 digits),
77      - seaice_itd (12 digits), seaice_itd.lipscomb07 (12 digits) -> update
78      - also update global_ocean.cs32x15 adjoint and tangent-linear results
79    o pkg/salt_plume & pkg/thsice:
80      - for coupled  set-up with pkg/thsice in ATM and pkg/salt_plume in OCN,
81        connect salt_plume flux to ATM-OCN coupling pkgs interface:
82       a) in ATM: also cumulate salt-plume flux in S/R THSICE_SALT_PLUME (for
83         export to coupler interface) even without compiling pkg/salt_plume ;
84       b) in OCN: apply coupler salt-plume flux to pkg/salt_plume field
85         (saltPlumeFlux) just before exch call, in S/R SALT_PLUME_DO_EXCH.
86    o pkg/dic:
87      - use the updated seaice fraction (from seaice pkgs) for DIC forcing
88        instead of the previous time-step value ; done in new S/R DIC_FIELDS_UPDATE
89        called from the top of dic_biotic_forcing.F (instead of in DIC_FIELDS_LOAD);
90      - move also update with values from ATM-OCN Coupler in the same new S/R
91        (previously done in ocn_apply_import.F).
92    o tools/adjoint_options:
93      - specify explicitly "-f77" or "-f90" in default ad-optfile since TAF (default)
94        has been changed on Jan 14, 2016.
95    o pkg/ggl90:
96      - add alternative discretisation of vertical shear (off by default), to
97        compute the mean (@ grid-cell center) of vertical shear compon instead of
98        vertical shear of mean flow (@ grid-cell center).
99      - add correct parenthesis in ALLOW_GGL90_SMOOTH code to get the same truncated
100        results on adjacent faces of cubed-sphere grids; this fix the restart.
101    o pkg/atm_compon_interf:
102      - skip time-ave over cpl_atmSendFrq of Sea-Level Pressure (atmSLPr) and just
103        pass last value, stored directly before export to CPL ;
104        Note: this affects results of Coupled set-up where OCN uses useImportSLP=T
105      - remove atmSLPr from pickup files (no longer needed for restart)
106    
107    checkpoint65s (2016/01/13)
108    o eesupp & genmake2:
109       - first check for Function ETIME and, if it fails, then check for subroutine
110         ETIME and consistent output; use the appropriate version in timers.F
111    o model/src:
112      - to check restart test, add option to apply EXCH to U,V earlier, just before
113        integr_continuity; turned off by default.
114    o pkg/dic:
115      - remove CPP option USE_ATMOSCO2 (not needed)
116    o tools/tst_2+2:
117      - try to ignore difference between +0 and -0 in binary file, causing test
118        to fail for no good reason.
119    o eesupp & genmake2:
120      - put back modif from Jinxuan Zhu - change etime fct call to S/R call -
121        but also check (in genmake2) that test runs and returns meaningful results.
122    o coupler pkgs:
123      Finish implementation of optionally-exchanged variable switches (started on
124       Nov 12) with addition of few more exchanged fields, including 2-way exchange
125       of pkg/thsice vars to allow to use seaice dynamics (from pkg/seaice) & seaice
126       advection in OCN component; this requires sequential coupling.
127      coupler (pkg/atm_ocn_coupler):
128      - add argument msgUnit and iter number to CPL_SEND/RECV_ATM/OCN_FIELDS
129        routines (useful for debug).
130      - only export/import optionally exchanged fields (RunOff, seaice, Salt-Plume
131         flux, DIC fields) if corresponding switch is ON.
132      - add option to export RunOff to OCN (to use for DIC river input)
133      - add 2-way thSIce vars exchange; check for consistent cpl_sequential setting.
134      components (pkg/atm_ & ocn_compon_interf):
135      - to save memory space in ATM & OCN comp: add some #ifdef ALLOW_${PKG} around
136        optionally exchanged fields; add a check & stop in cpl_readparms.F.
137        ATMCPL.h: ALLOW_LAND for RunOff, ALLOW_THSICE for seaice, ALLOW_AIM for CO2;
138        OCNCPL.h: ALLOW_SALT_PLUME, ALLOW_DIC for DIC, ALLOW_THSICE for 2-W thsice.
139      - rename:   fracIce     -> sIceFrac_cpl (<- match coupler var name)
140        + in ATM: fracIceTime -> sIceFracTime ; seaIceTime -> sIceMassTime.
141      - add 2-way thSIce vars exchange ; add Salt-Plume flux ; add RunOff in OCN.
142      - hold in common block coupler optionally-exchanged variable switch
143        and set default "useImportXXX" accordingly; + check & stop if inconsistent.
144      - add diagnostics for all imported fields from coupler (in both OCN & ATM);
145        this is intended to replace the OCN cplFldtave.* output files (not updated
146        to contain new additional exchanged fields).
147    o pkg/dic:
148      - fix an other bug (also from 2014/08/30) in dic_atmos.F, in dic_int1=3 code.
149    o pkg/thsice:
150      - when coupled to ATM (useCoupler) with thSIce_skipThermo=T, skip reading
151        and writing of thsice pickup files.
152    o pkg/atm_compon_interf:
153      - move all field individual export-call out of cpl_export_import_data.F
154        into new S/R ATM_EXPORT_FIELDS
155    o pkg/atm_compon_interf:
156      - store state variables (for now, only thSIce fields) just before beeing
157        exported (in cpl_export_import_data.F, like on ocean side) instead of from
158        atm_store_my_data.F like all exported fluxes.
159      - new version of pickup_cpl: write field names into meta file and read meta
160        file to find field postion in pickup. Also only write/read fields meeded for
161        restart (same logic as main pickup file ; also using pickupStrictlyMatch)
162    o pkg/dic:
163      - fix bug (added on 2014/08/30) in dic_atmos.F for the case dic_int1= 2 or 3.
164    o pkg/seaice: add new parameter SEAICEpressReplFac to choose between
165        pressure replacement method (=1., default) or original Hibler (1979) (=0.)
166        value can be from domain [0,1] to average between the two methods
167    o pkg/atm_phys:
168      - allow to provide 2-d map of albedo and mixed-layer depth from files (but
169        hold fixed in time).
170    
171    checkpoint65r (2015/12/21)
172    o pkg/seaice:
173        fix bug in tridiagonal solvers for SEAICE_OLx/y>0, this affects the JFNK
174        solver (offline.dyn_jfnk) and global_ocean.cs32x15.seaice -> updated
175    o pkg/seaice:
176      - fix a bug in computing areaS in (J-J -> J-1) that affects runs
177        when SEAICEscaleSurfStress=.TRUE.,
178      - apply areaW and areaS in S/R seaice_calc_lhs
179    o pkg/atm_phys:
180      - add diagnostics for 3-D, Nr+1 levels diagnostics of radiative fluxes
181        (shortwave & longwave, net & downward) and diagnostics of temp. tendency
182        for individual contribution (convection, LSC cond, radiation)
183      - add Ruth Geen etal, GRL 2016, radiation optionis (see paper supp.
184        information); activated with: solar_exponent=0. and wv_exponent=-1.
185    o pkg/ggl90:
186      - within IDEMIX add upper limit for horizontal group velocity to
187        avoid instability problems in the explicit horizontal diffusion term for
188        long time steps or high resolution
189    o pkg/diagnostics:
190      - simplify setting of local-array size in diagstats_output.F: uses "numLevels"
191        (from DIAGNOSTICS_SIZE.h) to allow to write out more than Nr levels.
192    o testreport:
193      - remove "-v" (verbose option) in default mpirun command.
194    o pkg/seaice/seaice_growth:
195      - catch potential division by zero in ITD code, does not change
196        verification results
197    o pkg/ecco:
198      - retire old codes to the Attic. The calls to retired functions are
199        left in a commented form in case they ever need to be re-activated.
200      - ecco_check.F: issue warning if any old CPP option is
201        defined that corresponds to retired codes -- then stop.
202    o pkg/atm_compon_interf:
203      - change seaice fraction (use for OCN dic surf.flux) stored and sent to
204        coupler: use last time-step value instead of average over cplSendFrq_iter
205        time-step, similar to what is done for seaIceMass.
206        This will affect results (pkg/dic) of coupled ATM-OCN+dic set-up.
207    o eesupp & genmake2:
208      - from Jinxuan Zhu: change etime fct call to S/R call (fix gfortran ETIME);
209        <= remove until a fix is found for some ifort version on ia32 machine.
210    o pkg/seaice/seaice_evp:
211      - refine residual computation
212    
213    checkpoint65q (2015/11/18)
214    o pkg/seaice/seaice_evp:
215      - fix residual computations so that they no longer affect the actual
216        simulation code
217      - fix seaice_readparams to be able to actually set new parameters
218        SEAICEaEVPcStar and SEAICEaEVPalphaMin, also fix logic a little
219    o model/src:
220      - fix wrong truncation (single prec) from "FLOAT" function in expressions
221        like: deltaT*FLOAT(myIter) when myIter is large:
222         a) replaced by DFLOAT (if not seen by TAF);
223         b) remove "FLOAT" and use implicit type conversion (if seen by TAF).
224    o pkg/aim_v23:
225      - write/read the expected CO2 pickups (from S/R AIM_DO_CO2): fix reading
226        when pickupSuff is set ; do write rolling pickups + at the end of the run.
227    o pkg/atm_ocn_coupler + ocn_compon_interf:
228      - in prep for using pkg/seaice Dyn in coupled set-up, implement sequential
229        coupling option-1: ATM -(cpl)-> OCN and then OCN -(cpl)-> ATM ;
230        add corresponding call in DO_OCEANIC_PHYS.
231    o coupler pkgs:
232      Start a new way to set-up optionally-exchanged variables (previously, only
233       there for exchange_DIC): switch on/off from 1 place, at run-time, in coupler
234       data.cpl (new) instead of at compile time in ATMIDS.h & OCNIDS.h ;
235       send switch to ATM & OCN compon before reading their own "data.cpl" (so that
236       compononent param default can be set accordingly).
237      Note: this new switch (cpl_exchange_[xxx]) is not a per variable switch
238       but rather applies to a group a fields (going both ways like for DIC)
239       and corresponds to an option of coupling config.
240      coupler (pkg/atm_ocn_coupler):
241      - change parameter file from "data" to "data.cpl" (in cpl_read_params.F),
242        and read namelist directly (without eessup S/R calls) instead of
243        in the very un-flexible old way, 1 param per line, in fixed order;
244      - add error-counter to track errors (e.g., missing "data.cpl") and to stop
245        cleanly in CPL_CHECK_CPLCONFIG
246      - add new coupling-exchange selectors (some not yet active) including
247        cpl_exchange_DIC (to set to 3 to replace atmCpl_exchange_DIC=T in ATMIDS.h
248                                             and ocnCpl_exchange_DIC=T in OCNIDS.h);
249      - add 2 new S/R (CPL_SEND_ATM/OCN_CPLPARMS) to send coupler-params to each
250        component ; called directly from coupler.F, after comp. registrations;
251      - rename few variable-ID names (in ATMIDS.h & OCNIDS.h):
252         atm/ocnSeaIceName --> atm/ocnSIceMassName ; atm/ocnFCO2Name ->
253          -> atm/ocnCO2FluxName ; atm/ocnWSpdName --> atm/ocnWindSpdName
254      components (pkg/atm_ & ocn_compon_interf):
255      - add ATM/OCN_CPL_OPTIONS.h in component pkgs and include the corresponding
256        CPP header file in all pkg source files.
257      - move checking of comp. configs out of cpl_exch_configs.F into new S/R
258        ATM/OCN_CHECK_CPLCONFIG;
259      - add error-counter to track errors (e.g., in "data.cpl") and to stop
260        cleanly in ATM/OCN_CHECK_CPLCONFIG;
261      - add new S/R CPL_IMPORT_CPLPARMS to import coupling-exchange selectors
262        from coupler ; called from initialise_fixed.F, after PACKAGES_BOOT and
263        before PACKAGES_READPARMS;
264      verification/cpl_aim+ocn/:
265      - update ATMIDS.h & OCNIDS.h (in shared_code) and use new parameter file
266        "data.cpl" for coupler (in input_cpl).
267    o eesupp/inc:
268      - change the MPI-global-sum default (in CPP_EEOPTIONS.h) to:
269        #define GLOBAL_SUM_ORDER_TILES (only affects MPI built of global_sum_tile.F)
270        to always cumulate tile local-sum in the same order (still uses
271        MPI_Allreduce like standard code).
272      - in verification experiment code, remove local CPP_EEOPTIONS.h_mpi files
273        that are now identical to standard version (in eesupp/inc).
274    o pkg/shelfice:
275      - add SHELFICETransCoeffTFile for initializing spatially varying
276        heat and salt transfer coefficients
277    o pkg/atm_compon_interf & ocn_compon_interf:
278      - combine into 1 (new) S/R CPL_EXPORT_IMPORT_DATA the two previous
279        S/R CPL_EXPORT_MY_DATA & CPL_IMPORT_EXTERNAL_DATA
280      - move bi,bj loops inside S/R OCN_STORE_MY_DATA
281    o pkg/atm_ocn_coupler:
282      - initialise to zero ATMVARS.h & OCNVARS.h arrays.
283    o pkg/rbcs:
284      - select RBCS-mask for Temp & Salt the same way as for pTracer ; this allows
285        to compile with maskLEN=1 when all tracers use the same RBCS-mask.
286      - add a short report (to STDOUT) about RBCS-mask settings.
287    
288    checkpoint65p (2015/10/23)
289    o pkg/seaice/seaice_evp.F: fix store directives and key computations, since
290        there is no adjoint test for EVP, we don't know what it does to the adjoint
291        solution, but at least there are no more recomputation warnings left
292    o pkg/seaice/seaice_evp.F: slight modification of averaging so that EVP stands
293        a chance of giving the same results as a fully converged VP (JFNK) solver
294    o tools/adjoint_options/adjoint_diva:
295      - fix bug (typo) in Tang-Linear FLAGS setting for MPI + DIVA
296    o pkg/streamice:
297      - spotted bug in streamice_driving_stress using dyG where should have been dxG
298    o pkg/exf:
299      - remove STOP statement that prevented to use wind or (wind-)stress
300        interpolation for constant-in-time forcing fields (wind/stress period = 0).
301    o pkg/seaice:
302      - replace SEAICE_EVP_USE_ADAPTATION by run time parameters, requires
303        5 additionals 2D fields and 6 new store directives
304      - change logic in seaice_readparms.F: EVP code can now be turned on in
305        various ways, setting SEAICE_deltaTev is no longer required,
306        alternatively set SEAICE_evpAlpha/Beta, SEAICEuseEVPstar, SEAICEuseEVPrev,
307        or SEAICEaEVPcoeff
308    o pkg/shelfice/shelfice_thermodynamics.F
309      - redefining uLoc/vLoc to u/v, instead of 2u/v
310    o pkg/seaice/seaice_evp.F: introduce "adaptive EVP" by Madlen Kimmritz
311      - this is an intermediate state of a truely converging EVP that has
312        the potential of outperforming implicit VP methods, I do not recommend
313        using it yet.
314      - for now, "adaptive EVP" is turned on by setting SEAICE_EVP_USE_ADAPTATION
315        and all parameters are hardwired
316      - for convergence it still requires very smooth regularisations, that means,
317        if SEAICE_DELTA_SMOOTHREG is defined, deltaCreg=deltaC+deltaMin, which is
318        different from the VP case with deltaCreg=sqrt(deltaC**2+deltaMin**2); also
319        specific averaging appears to be required, still subject to tuning
320      - still needs cleaning and I need to turn parameter into runtime parameters
321      - add code to compute and print residuals of iteration, compile with
322        defining ALLOW_SEAICE_EVP_RESIDUAL to enable it
323    o pkg/seaice/seaice_evp.F: fix a bug (factor of four in front of e12Csq)
324      that entered with r1.54 on Sep04, 2015, -> update results
325    
326    checkpoint65o (2015/09/14)
327    o pkg/mom_vecinv & mom_common:
328      - add deep-atmosphere geometry factor in mom_calc_visc.F + in routines
329        called from there.
330      - add anelastic and deep-atmosphere geometry factor in pkg/mom_vecinv ; this
331        allows to use Vector-Invariant form in deep atmos and anelastic formulation
332    o pkg/seaice: introduce fast ice parameterisation following Itkin et al. (2015)
333      and Koenig-Beatty+Holland (2012)
334      - two new parameters SEAICE_tensilFac and SEAICE_tensilDepth
335      - global 2D field tensileStrength, computed in seaice_calc_ice_strength
336      - requires an extra input argument for S/R seaice_calc_viscosities
337      - tensileStrength's depth dependence is different from Itkin et al. (2015)
338        (to be changed and played with, for now exponential)
339    o pkg/seaice: introduce new parameter SEAICEscaleSurfStress (default = .FALSE.)
340      - if TRUE scale ice-ocean and ice-atmosphere stress acting on sea ice
341        by AREA according to Connelly et al. (2004), JPO.
342      - For EVP and the LSR solver, the implicit part of the drag term is
343        the only non-zero term in the denominator when there is no ice (which
344        prevented running the model with zero ice-ocean drag). If
345        SEAICEscaleSurfStress = .TRUE., this results in a division by zero
346        (or zero main diagonals BU/BV) which need to be caught. A practical
347        consequence is that for open water, the momentum equation reduce
348        to trivially 0 = 0 + 0 (for EVP). For LSR, BU/BV are reset to 1, if
349        they happen to be zero, often leading to a non-zero solution over
350        open water.
351    o pkg/seaice: revise EVP code (seaice_evp.F) in preparation for a more
352        efficient EVP method.
353      - introduce area-weighted averages for e12 (analogously to
354        seaice_calc_viscosities.F); this totally changes lab_sea.hb87 (2 digits
355        remain, but also changing the order of terms in the previous average
356        changed the results as much) -> update experiment
357      - add SEAICE_DELTA_SMOOTHREG code
358      - disentangle computation of zetaC/deltaC and zetaZ/deltaZ, also for
359        TEM-code
360      - adjust loop bounds so that only required fields are computed
361      - add new averaging code for zetaZ/deltaZ (again similar to
362        seaice_calc_viscosities.F), inactive by default for now (will change
363        results again), but will replace old code eventually
364    o eesupp/src:
365      - add an other alternative for multi-proc GLOBAL_SUM (in global_sum_tile.F)
366        to always cumulate tile local-sum in the same order
367        (option #define GLOBAL_SUM_ORDER_TILES in CPP_EEOPTIONS.h).
368        Still uses MPI_Allreduce (like standard code) but on array of tiles
369        and should be faster than GLOBAL_SUM_SEND_RECV code.
370      - switch almost all verification experiments that use GLOBAL_SUM_SEND_RECV
371        (defined in CPP_EEOPTIONS.h_mpi) to GLOBAL_SUM_ORDER_TILES instead.
372      - add CPP_EEOPTIONS.h_mpi with GLOBAL_SUM_ORDER_TILES defined in 14 more exp.:
373         aim.5l_cs, cheapAML_box, deep_anelastic, dome, fizhi-cs-32x32x40,
374         fizhi-cs-aqualev20, fizhi-gridalt-hs, global_ocean_ebm, matrix_example,
375         natl_box, solid-body.cs-32x32x1, tutorial_advection_in_gyre,
376         tutorial_baroclinic_gyre and tutorial_held_suarez_cs.
377    
378    checkpoint65n (2015/07/29)
379    o pkg/thsice:
380      - add a warning when used with pkg/aim but without updating SST
381        (stepFwd_oceMxL=F & useCoupler=F & tauRelax_MxL<>-1 ).
382    o pkg/offline:
383      - change where Offline-Fields are loaded, from load_fields_driver.F to
384        directly within FORWARD_STEP, just after updating iter number and time;
385      - move setting of GM and KPP diffusivity out of OFFLINE_FIELDS_LOAD into new
386        S/R OFFLINE_GET_DIFFUS that is called towards the end of DO_OCEANIC_PHYS;
387       These changes allow:
388        a) to recover exactly on-line results using deltaToffline=deltaTClock,
389        tested (using offlineIter0= nIter0 -1 and offlineTimeOffset= -deltaT/2)
390        both with Lin & Non-Lin Free-Surf, both with staggerTimeStep & synchronous
391        time-step, both with GM & KPP files and with recomputing these fields;
392        b) no needs to switch on staggerTimeStep anymore;
393        c) simplify rescaling of offline horiz. velocity with Non-Lin Free-Surf.
394      - update output of experiment tutorial_dic_adjoffline (only 3 digits left).
395    o pkg/offline:
396      - change (rarely used) offset-iteration parameter to an offset time (in s):
397        can easily recover previous offset-iter effect by setting offset-time
398        (offlineTimeOffset) to offset-iter x deltaToffline;
399      - do not turn-off Temp & Salinity surface relaxation when using KPP (used
400        in KPP as part of surface buoyancy forcing) in offline run.
401      - fix ptracers KPP non-local term in the case where KPP is re-computed.
402    o OpenAD
403      - Adding preliminary ggl90 test to OpenAD verification.
404        Config. with ggl90 currently diverges after 64 time steps
405        so will need more work to become more stable
406      - Adding preliminary kpp test to OpenAD verification.
407        required small tweakes in kpp_routines.F
408      - Merge and update from Krishna Narayanan's contrib area:
409        * Add one variable for preliminary OpenAD DIVA
410        * Add replacement time-stepping for OpenAD DIVA
411        * genmake2 flag -diva (but only for OpenAD; preliminary)
412        * required modifs for OAD_support
413        successful preliminary test for tutorial_global_oce_biogeo/
414    o pkg/seaice:
415      - initialise deltaC in seaice_lsr, cosmetic changes in seaice_lsr
416      - add cpp-flag SEAICE_DELTA_SMOOTHREG for option of regularising
417        delta with a smooth function in s/r seaice_calc_viscosity
418        (no effect on EVP)
419      - rename local suffix "sqr" into "sq" for more consistent variable names
420    o pkg/seaice:
421        add new parameter SEAICE_deltaMin that is used ***only***
422        for regularizing Delta (and nothing else, like the parameter
423        which is also used for all sorts of things SEAICE_EPS).
424        Defaults to SEAICE_EPS for backward compatibility only.
425    o pkg/seaice: replace erroneously storing e12Csqr on the wrong tape with
426        the wrong key by inialising it before use -> fixes a recomputation
427        problem but does not fix the gradient
428    o pkg/layers:
429      - move resetting of flux arrays to outside the iLa loop
430        (this caused layers_diapycnal to not work with more than one layer coord.)
431      - fix bug in calculation of layers_recip_delta in layers_init_fixed.F
432    o pkg/layers:
433      - remove from common block 3D layers fields (used to diagnose transport
434        in tracer coords) and declare them as local arrays in layers_calc.F
435    o pkg/seaice:
436      - Rename SEAICE_VECTORIZE_LSR_ZEBRA to SEAICE_LSR_ZEBRA and define it
437        in lab_sea forward experiment (changes results -> updated)
438      - update adjoint experiment lab_sea after cleaning up seaice_lsr_tridiagu/v
439    o pkg/seaice: modify seaice_lsr.F in order to improve the gradient
440       computations; for SEAICE_VECTORIZE_LSR
441      - move the loops over which the tridiagonal solvers (seaice_lsr_tridiagu/v)
442        sweep to the outside,
443      - remove store directives and add "CADJ loop sequential" directives
444        in analogy to model/src/solve_tridiagonal.F
445      - replace many "#ifdef SEAICE_VECTORIZE_LSR_ZEBRA" by variable loop
446        boundaries to yield more readable code. This has also the charming side
447        effect that your can use SEAICE_VECTORIZE_LSR_ZEBRA without
448        SEAICE_VECTORIZE_LSR (i.e. adjoint without recomputations in
449        seaice_lsr_tridiagu/v now requires either of these flags, vectorization
450        still requires SEAICE_VECTORIZE_LSR with SEAICE_VECTORIZE_LSR_ZEBRA as
451        an additional option)
452       The tridiagonal solvers are now completely analoguous to solve_tridiagonal.F
453       but the adjoint gradients (which are affected by this change) still explode.
454    o coupler (atm & ocn _compon_interf):
455      - avoid using Exch2 IO mapping if not suitable.
456    
457    checkpoint65m (2015/06/15)
458    o pkg/layers:
459      - clean-up old parameters setting (from Sep 2012):
460        + remove old parameters setting from common block (declared locally);
461        + stop if any old parameter is mixed with new parameters;
462        + check for valid or consistent parameter setting (e.g., layers_name)
463      - check that layers_bounds for Pot.Density are in the right range;
464        this is supposed to catch un-updated setting after recently shifting
465        potential density field "prho" by -1000 (now in "sigma" scale).
466    o pkg/layers:
467      - Added missing call to layers_fill for keeping track of tottend in
468        pkg/diagnostics/diagnostics_fill_state.F
469    o pkg/layers:
470      - added CPP flux LAYERS_FINEGRID_DIAPYCNAL to disable fine-grid binning
471        of diapycnal fluxes
472    o pkg/layers:
473      - reverted changes to interpolation to previous treatment; there
474        was never actually a problem
475    o pkg/layers:
476      - fix interpolation of layers tracers in the presence of partial cells
477      - add lots of new functionality to compute water mass transformation
478        (enabled by CPP flag LAYERS_THERMODYNAMICS)
479      - add new calls from main code (diags_oceanic_surf_flux.F,
480        thermodynamics.F, impldiff.F) and gad to save the necessary fields
481        for layers_thermodynamics calculations
482    o pkg/ptracers:
483      - add capability of stepping a passive tracer forward without advection
484        by setting PTRACERS_advScheme to 0.
485    o pkg/diagnostics:
486      - add few (threads) _BARRIER around any update of "diag_pkgStatus".
487    o pkg/layers:
488      - shift potential density field "prho" by -1000 for density layer averaging so
489        that it corresponds to usual "sigma" definition (i.e., rho(p=const)-1000);
490        Note that density bin boundaries (layers_bounds in data.layers) have
491        to be set accordingly (i.e., shifted, in sigma scale).
492    o pkg/layers:
493      - fix snap-shot output of layer thickness @ V.pt and output of pot.density
494      - fix calculation of layer non-weighted velocity and layer probability
495      - add diagnostics for pot.density used for layer averaging
496    o pkg/seaice:
497      - seaice_calc_viscosity.F: change computation of deltaC**2 to ensure
498        positiveness, modify a few comments and improve variable names,
499      - the changed computation of deltaC affects most seaice-related
500        experiments at the truncation level.
501        seaice_itd.thermo is affected by far the most, with
502        only 7 digits of agreement remaining; update experiments.
503    
504    checkpoint65l (2015/05/04)
505    o pkg/shelfice:
506      - in shelfice_thermodynamics.F, if SHELFICEBoundaryLayer=.true., then set
507        factor drKp1 to zero where it is negative (ie. do not use
508        SHELFICEBoundaryLayer if hFacC>1)
509      - the same for factor drLoc in shelfice_forcing.F
510    o tools/genmake2: move FEXTRAFLAGS from FFLAGS to FOPTIM to avoid a problem
511        with modules in ptracers, when using testreport option "-small_f"
512    o pkg/seaice/seaice_growth.F (in case of SEAICE_ITD)
513      - replace tmpscal1**1.36 by faster exp(1.36*log(tmpscal1))
514    o verification/testreport
515      - add new option -small_f
516        with this option testreport first makes the target small_f (*.f files)
517        before running make (all). This is useful for explicit inlining when
518        all sources need to be full available.
519    o pkg/exf/exf_interp.F:
520        remove previous changes related to reverse (decreasing) input grids latitude
521    
522    checkpoint65k (2015/04/01)
523    o pkg/ecco:
524        fix missing cosphi initialization; use eccoiter in place of optimcycle;
525        if autodiff is not compiled then use READ_REC_XY_RL/READ_REC_XYZ_RL
526        instead of active read/write
527    o pkg/ctrl:
528        if autodiff is not compiled then use READ_REC_XY_RL/READ_REC_XYZ_RL
529        instead of active read/write.
530    o pkg/autodiff: make autodiff_readparms.F and autodiff_whtapeio_sync.F
531        return if .NOT.useAUTODIFF
532    o pkg/seaice: add CPP brackets (cost function related).
533    o model/src:
534        add useAUTODIFF run time switch.
535    o pkg/exf/exf_interp.F:
536        add code to allow input grids with latitude starting in the north (i.e. when
537        j=1 corresponds to northern edge of field); modify global_with_exf to test
538        this feature.
539  o verification/testreport:  o verification/testreport:
540    - replace "grep -A3" with POSIX conformal sed command, because there are    - replace "grep -A3" with POSIX conformal sed command, because there are
541      implementations of grep that cannot do contextual searches      implementations of grep that cannot do contextual searches
542    - replace "cat -n" by "nl" (two occurrences), because not all implementations    - replace "cat -n" by "nl" (two occurrences), because not all implementations
543      of "cat" have the option "-n"      of "cat" have the option "-n"
544  o model/src: add new file gsw_teos10.F that contains  o model/src:
545      3 functions, more or less a copy of the gsw_toolbox.f90 of the TEOS-10      add new file gsw_teos10.F that contains 3 functions, more or less a copy
546      fortran interface, that are used to convert from conservative to      of the gsw_toolbox.f90 of the TEOS-10 fortran interface, that are used to
547      potential temperature. For now they are not called anywhere.      convert from conservative to potential temperature. For now they are not
548        called anywhere.
549  o pkg/ggl90: make "useIDEMIX" useful  o pkg/ggl90: make "useIDEMIX" useful
550    - re-organize code in s/r ggl90_calc a little to move computations that    - re-organize code in s/r ggl90_calc a little to move computations that
551      are different for idemix into separate loops (changes verification      are different for idemix into separate loops (changes verification
552      experiment idemix at truncation level, 12 digits remain -> updated)      experiment idemix at truncation level, 12 digits remain -> updated)
553    - requires 2 new 2D fields KappaM, verticalShear    - requires 2 new 2D fields KappaM, verticalShear
554    - make hFacI and recip_hFacI local 3D variables that are passed to    - make hFacI and recip_hFacI local 3D variables that are passed to

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