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revision 1.2173 by jmc, Sat Jul 18 22:15:07 2015 UTC revision 1.2205 by jmc, Fri Nov 20 22:51:39 2015 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/atm_compon_interf:
8      - change seaice fraction (use for OCN dic surf.flux) stored and sent to
9        coupler: use last time-step value instead of average over cplSendFrq_iter
10        time-step, similar to what is done for seaIceMass.
11        This will affect results (pkg/dic) of coupled ATM-OCN+dic set-up.
12    o eesupp & genmake2:
13      - from Jinxuan Zhu: change etime fct call to S/R call (fix gfortran ETIME);
14        <= remove until a fix is found for some ifort version on ia32 machine.
15    o pkg/seaice/seaice_evp:
16      - refine residual computation
17    
18    checkpoint65q (2015/11/18)
19    o pkg/seaice/seaice_evp:
20      - fix residual computations so that they no longer affect the actual
21        simulation code
22      - fix seaice_readparams to be able to actually set new parameters
23        SEAICEaEVPcStar and SEAICEaEVPalphaMin, also fix logic a little
24    o model/src:
25      - fix wrong truncation (single prec) from "FLOAT" function in expressions
26        like: deltaT*FLOAT(myIter) when myIter is large:
27         a) replaced by DFLOAT (if not seen by TAF);
28         b) remove "FLOAT" and use implicit type conversion (if seen by TAF).
29    o pkg/aim_v23:
30      - write/read the expected CO2 pickups (from S/R AIM_DO_CO2): fix reading
31        when pickupSuff is set ; do write rolling pickups + at the end of the run.
32    o pkg/atm_ocn_coupler + ocn_compon_interf:
33      - in prep for using pkg/seaice Dyn in coupled set-up, implement sequential
34        coupling option-1: ATM -(cpl)-> OCN and then OCN -(cpl)-> ATM ;
35        add corresponding call in DO_OCEANIC_PHYS.
36    o coupler pkgs:
37      Start a new way to set-up optionally-exchanged variables (previously, only
38       there for exchange_DIC): switch on/off from 1 place, at run-time, in coupler
39       data.cpl (new) instead of at compile time in ATMIDS.h & OCNIDS.h ;
40       send switch to ATM & OCN compon before reading their own "data.cpl" (so that
41       compononent param default can be set accordingly).
42      Note: this new switch (cpl_exchange_[xxx]) is not a per variable switch
43       but rather applies to a group a fields (going both ways like for DIC)
44       and corresponds to an option of coupling config.
45      coupler (pkg/atm_ocn_coupler):
46      - change parameter file from "data" to "data.cpl" (in cpl_read_params.F),
47        and read namelist directly (without eessup S/R calls) instead of
48        in the very un-flexible old way, 1 param per line, in fixed order;
49      - add error-counter to track errors (e.g., missing "data.cpl") and to stop
50        cleanly in CPL_CHECK_CPLCONFIG
51      - add new coupling-exchange selectors (some not yet active) including
52        cpl_exchange_DIC (to set to 3 to replace atmCpl_exchange_DIC=T in ATMIDS.h
53                                             and ocnCpl_exchange_DIC=T in OCNIDS.h);
54      - add 2 new S/R (CPL_SEND_ATM/OCN_CPLPARMS) to send coupler-params to each
55        component ; called directly from coupler.F, after comp. registrations;
56      - rename few variable-ID names (in ATMIDS.h & OCNIDS.h):
57         atm/ocnSeaIceName --> atm/ocnSIceMassName ; atm/ocnFCO2Name ->
58          -> atm/ocnCO2FluxName ; atm/ocnWSpdName --> atm/ocnWindSpdName
59      components (pkg/atm_ & ocn_compon_interf):
60      - add ATM/OCN_CPL_OPTIONS.h in component pkgs and include the corresponding
61        CPP header file in all pkg source files.
62      - move checking of comp. configs out of cpl_exch_configs.F into new S/R
63        ATM/OCN_CHECK_CPLCONFIG;
64      - add error-counter to track errors (e.g., in "data.cpl") and to stop
65        cleanly in ATM/OCN_CHECK_CPLCONFIG;
66      - add new S/R CPL_IMPORT_CPLPARMS to import coupling-exchange selectors
67        from coupler ; called from initialise_fixed.F, after PACKAGES_BOOT and
68        before PACKAGES_READPARMS;
69      verification/cpl_aim+ocn/:
70      - update ATMIDS.h & OCNIDS.h (in shared_code) and use new parameter file
71        "data.cpl" for coupler (in input_cpl).
72    o eesupp/inc:
73      - change the MPI-global-sum default (in CPP_EEOPTIONS.h) to:
74        #define GLOBAL_SUM_ORDER_TILES (only affects MPI built of global_sum_tile.F)
75        to always cumulate tile local-sum in the same order (still uses
76        MPI_Allreduce like standard code).
77      - in verification experiment code, remove local CPP_EEOPTIONS.h_mpi files
78        that are now identical to standard version (in eesupp/inc).
79    o pkg/shelfice:
80      - add SHELFICETransCoeffTFile for initializing spatially varying
81        heat and salt transfer coefficients
82    o pkg/atm_compon_interf & ocn_compon_interf:
83      - combine into 1 (new) S/R CPL_EXPORT_IMPORT_DATA the two previous
84        S/R CPL_EXPORT_MY_DATA & CPL_IMPORT_EXTERNAL_DATA
85      - move bi,bj loops inside S/R OCN_STORE_MY_DATA
86    o pkg/atm_ocn_coupler:
87      - initialise to zero ATMVARS.h & OCNVARS.h arrays.
88    o pkg/rbcs:
89      - select RBCS-mask for Temp & Salt the same way as for pTracer ; this allows
90        to compile with maskLEN=1 when all tracers use the same RBCS-mask.
91      - add a short report (to STDOUT) about RBCS-mask settings.
92    
93    checkpoint65p (2015/10/23)
94    o pkg/seaice/seaice_evp.F: fix store directives and key computations, since
95        there is no adjoint test for EVP, we don't know what it does to the adjoint
96        solution, but at least there are no more recomputation warnings left
97    o pkg/seaice/seaice_evp.F: slight modification of averaging so that EVP stands
98        a chance of giving the same results as a fully converged VP (JFNK) solver
99    o tools/adjoint_options/adjoint_diva:
100      - fix bug (typo) in Tang-Linear FLAGS setting for MPI + DIVA
101    o pkg/streamice:
102      - spotted bug in streamice_driving_stress using dyG where should have been dxG
103    o pkg/exf:
104      - remove STOP statement that prevented to use wind or (wind-)stress
105        interpolation for constant-in-time forcing fields (wind/stress period = 0).
106    o pkg/seaice:
107      - replace SEAICE_EVP_USE_ADAPTATION by run time parameters, requires
108        5 additionals 2D fields and 6 new store directives
109      - change logic in seaice_readparms.F: EVP code can now be turned on in
110        various ways, setting SEAICE_deltaTev is no longer required,
111        alternatively set SEAICE_evpAlpha/Beta, SEAICEuseEVPstar, SEAICEuseEVPrev,
112        or SEAICEaEVPcoeff
113    o pkg/shelfice/shelfice_thermodynamics.F
114      - redefining uLoc/vLoc to u/v, instead of 2u/v
115    o pkg/seaice/seaice_evp.F: introduce "adaptive EVP" by Madlen Kimmritz
116      - this is an intermediate state of a truely converging EVP that has
117        the potential of outperforming implicit VP methods, I do not recommend
118        using it yet.
119      - for now, "adaptive EVP" is turned on by setting SEAICE_EVP_USE_ADAPTATION
120        and all parameters are hardwired
121      - for convergence it still requires very smooth regularisations, that means,
122        if SEAICE_DELTA_SMOOTHREG is defined, deltaCreg=deltaC+deltaMin, which is
123        different from the VP case with deltaCreg=sqrt(deltaC**2+deltaMin**2); also
124        specific averaging appears to be required, still subject to tuning
125      - still needs cleaning and I need to turn parameter into runtime parameters
126      - add code to compute and print residuals of iteration, compile with
127        defining ALLOW_SEAICE_EVP_RESIDUAL to enable it
128    o pkg/seaice/seaice_evp.F: fix a bug (factor of four in front of e12Csq)
129      that entered with r1.54 on Sep04, 2015, -> update results
130    
131    checkpoint65o (2015/09/14)
132    o pkg/mom_vecinv & mom_common:
133      - add deep-atmosphere geometry factor in mom_calc_visc.F + in routines
134        called from there.
135      - add anelastic and deep-atmosphere geometry factor in pkg/mom_vecinv ; this
136        allows to use Vector-Invariant form in deep atmos and anelastic formulation
137    o pkg/seaice: introduce fast ice parameterisation following Itkin et al. (2015)
138      and Koenig-Beatty+Holland (2012)
139      - two new parameters SEAICE_tensilFac and SEAICE_tensilDepth
140      - global 2D field tensileStrength, computed in seaice_calc_ice_strength
141      - requires an extra input argument for S/R seaice_calc_viscosities
142      - tensileStrength's depth dependence is different from Itkin et al. (2015)
143        (to be changed and played with, for now exponential)
144    o pkg/seaice: introduce new parameter SEAICEscaleSurfStress (default = .FALSE.)
145      - if TRUE scale ice-ocean and ice-atmosphere stress acting on sea ice
146        by AREA according to Connelly et al. (2004), JPO.
147      - For EVP and the LSR solver, the implicit part of the drag term is
148        the only non-zero term in the denominator when there is no ice (which
149        prevented running the model with zero ice-ocean drag). If
150        SEAICEscaleSurfStress = .TRUE., this results in a division by zero
151        (or zero main diagonals BU/BV) which need to be caught. A practical
152        consequence is that for open water, the momentum equation reduce
153        to trivially 0 = 0 + 0 (for EVP). For LSR, BU/BV are reset to 1, if
154        they happen to be zero, often leading to a non-zero solution over
155        open water.
156    o pkg/seaice: revise EVP code (seaice_evp.F) in preparation for a more
157        efficient EVP method.
158      - introduce area-weighted averages for e12 (analogously to
159        seaice_calc_viscosities.F); this totally changes lab_sea.hb87 (2 digits
160        remain, but also changing the order of terms in the previous average
161        changed the results as much) -> update experiment
162      - add SEAICE_DELTA_SMOOTHREG code
163      - disentangle computation of zetaC/deltaC and zetaZ/deltaZ, also for
164        TEM-code
165      - adjust loop bounds so that only required fields are computed
166      - add new averaging code for zetaZ/deltaZ (again similar to
167        seaice_calc_viscosities.F), inactive by default for now (will change
168        results again), but will replace old code eventually
169    o eesupp/src:
170      - add an other alternative for multi-proc GLOBAL_SUM (in global_sum_tile.F)
171        to always cumulate tile local-sum in the same order
172        (option #define GLOBAL_SUM_ORDER_TILES in CPP_EEOPTIONS.h).
173        Still uses MPI_Allreduce (like standard code) but on array of tiles
174        and should be faster than GLOBAL_SUM_SEND_RECV code.
175      - switch almost all verification experiments that use GLOBAL_SUM_SEND_RECV
176        (defined in CPP_EEOPTIONS.h_mpi) to GLOBAL_SUM_ORDER_TILES instead.
177      - add CPP_EEOPTIONS.h_mpi with GLOBAL_SUM_ORDER_TILES defined in 14 more exp.:
178         aim.5l_cs, cheapAML_box, deep_anelastic, dome, fizhi-cs-32x32x40,
179         fizhi-cs-aqualev20, fizhi-gridalt-hs, global_ocean_ebm, matrix_example,
180         natl_box, solid-body.cs-32x32x1, tutorial_advection_in_gyre,
181         tutorial_baroclinic_gyre and tutorial_held_suarez_cs.
182    
183    checkpoint65n (2015/07/29)
184    o pkg/thsice:
185      - add a warning when used with pkg/aim but without updating SST
186        (stepFwd_oceMxL=F & useCoupler=F & tauRelax_MxL<>-1 ).
187  o pkg/offline:  o pkg/offline:
188    - change where Offline-Fields are loaded, from load_fields_driver.F to    - change where Offline-Fields are loaded, from load_fields_driver.F to
189      directly within FORWARD_STEP, just after updating iter number and time;      directly within FORWARD_STEP, just after updating iter number and time;
# Line 16  o pkg/offline: Line 196  o pkg/offline:
196      time-step, both with GM & KPP files and with recomputing these fields;      time-step, both with GM & KPP files and with recomputing these fields;
197      b) no needs to switch on staggerTimeStep anymore;      b) no needs to switch on staggerTimeStep anymore;
198      c) simplify rescaling of offline horiz. velocity with Non-Lin Free-Surf.      c) simplify rescaling of offline horiz. velocity with Non-Lin Free-Surf.
199    - update output of experiments tutorial_cfc_offline (11 to 13 digits left)    - update output of experiment tutorial_dic_adjoffline (only 3 digits left).
     and tutorial_dic_adjoffline (only 3 digits left).  
200  o pkg/offline:  o pkg/offline:
201    - change (rarely used) offset-iteration parameter to an offset time (in s):    - change (rarely used) offset-iteration parameter to an offset time (in s):
202      can easily recover previous offset-iter effect by setting offset-time      can easily recover previous offset-iter effect by setting offset-time
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