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revision 1.2173 by jmc, Sat Jul 18 22:15:07 2015 UTC revision 1.2211 by mlosch, Wed Dec 16 12:16:46 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/seaice: fix a bug computing areaS in seaice_calc_lhs/rhs (J-J -> J-1)
8      that affects runs when SEAICEscaleSurfStress=.TRUE. (only for JFNK)
9    o pkg/atm_phys:
10      - add diagnostics for 3-D, Nr+1 levels diagnostics of radiative fluxes
11        (shortwave & longwave, net & downward) and diagnostics of temp. tendency
12        for individual contribution (convection, LSC cond, radiation)
13      - add Ruth Geen etal, GRL 2016, radiation optionis (see paper supp.
14        information); activated with: solar_exponent=0. and wv_exponent=-1.
15    o pkg/ggl90:
16      - within IDEMIX add upper limit for horizontal group velocity to
17        avoid instability problems in the explicit horizontal diffusion term for
18        long time steps or high resolution
19    o pkg/diagnostics:
20      - simplify setting of local-array size in diagstats_output.F: uses "numLevels"
21        (from DIAGNOSTICS_SIZE.h) to allow to write out more than Nr levels.
22    o testreport:
23      - remove "-v" (verbose option) in default mpirun command.
24    o pkg/seaice/seaice_growth:
25      - catch potential division by zero in ITD code, does not change
26        verification results
27    o pkg/ecco:
28      - retire old codes to the Attic. The calls to retired functions are
29        left in a commented form in case they ever need to be re-activated.
30      - ecco_check.F: issue warning if any old CPP option is
31        defined that corresponds to retired codes -- then stop.
32    o pkg/atm_compon_interf:
33      - change seaice fraction (use for OCN dic surf.flux) stored and sent to
34        coupler: use last time-step value instead of average over cplSendFrq_iter
35        time-step, similar to what is done for seaIceMass.
36        This will affect results (pkg/dic) of coupled ATM-OCN+dic set-up.
37    o eesupp & genmake2:
38      - from Jinxuan Zhu: change etime fct call to S/R call (fix gfortran ETIME);
39        <= remove until a fix is found for some ifort version on ia32 machine.
40    o pkg/seaice/seaice_evp:
41      - refine residual computation
42    
43    checkpoint65q (2015/11/18)
44    o pkg/seaice/seaice_evp:
45      - fix residual computations so that they no longer affect the actual
46        simulation code
47      - fix seaice_readparams to be able to actually set new parameters
48        SEAICEaEVPcStar and SEAICEaEVPalphaMin, also fix logic a little
49    o model/src:
50      - fix wrong truncation (single prec) from "FLOAT" function in expressions
51        like: deltaT*FLOAT(myIter) when myIter is large:
52         a) replaced by DFLOAT (if not seen by TAF);
53         b) remove "FLOAT" and use implicit type conversion (if seen by TAF).
54    o pkg/aim_v23:
55      - write/read the expected CO2 pickups (from S/R AIM_DO_CO2): fix reading
56        when pickupSuff is set ; do write rolling pickups + at the end of the run.
57    o pkg/atm_ocn_coupler + ocn_compon_interf:
58      - in prep for using pkg/seaice Dyn in coupled set-up, implement sequential
59        coupling option-1: ATM -(cpl)-> OCN and then OCN -(cpl)-> ATM ;
60        add corresponding call in DO_OCEANIC_PHYS.
61    o coupler pkgs:
62      Start a new way to set-up optionally-exchanged variables (previously, only
63       there for exchange_DIC): switch on/off from 1 place, at run-time, in coupler
64       data.cpl (new) instead of at compile time in ATMIDS.h & OCNIDS.h ;
65       send switch to ATM & OCN compon before reading their own "data.cpl" (so that
66       compononent param default can be set accordingly).
67      Note: this new switch (cpl_exchange_[xxx]) is not a per variable switch
68       but rather applies to a group a fields (going both ways like for DIC)
69       and corresponds to an option of coupling config.
70      coupler (pkg/atm_ocn_coupler):
71      - change parameter file from "data" to "data.cpl" (in cpl_read_params.F),
72        and read namelist directly (without eessup S/R calls) instead of
73        in the very un-flexible old way, 1 param per line, in fixed order;
74      - add error-counter to track errors (e.g., missing "data.cpl") and to stop
75        cleanly in CPL_CHECK_CPLCONFIG
76      - add new coupling-exchange selectors (some not yet active) including
77        cpl_exchange_DIC (to set to 3 to replace atmCpl_exchange_DIC=T in ATMIDS.h
78                                             and ocnCpl_exchange_DIC=T in OCNIDS.h);
79      - add 2 new S/R (CPL_SEND_ATM/OCN_CPLPARMS) to send coupler-params to each
80        component ; called directly from coupler.F, after comp. registrations;
81      - rename few variable-ID names (in ATMIDS.h & OCNIDS.h):
82         atm/ocnSeaIceName --> atm/ocnSIceMassName ; atm/ocnFCO2Name ->
83          -> atm/ocnCO2FluxName ; atm/ocnWSpdName --> atm/ocnWindSpdName
84      components (pkg/atm_ & ocn_compon_interf):
85      - add ATM/OCN_CPL_OPTIONS.h in component pkgs and include the corresponding
86        CPP header file in all pkg source files.
87      - move checking of comp. configs out of cpl_exch_configs.F into new S/R
88        ATM/OCN_CHECK_CPLCONFIG;
89      - add error-counter to track errors (e.g., in "data.cpl") and to stop
90        cleanly in ATM/OCN_CHECK_CPLCONFIG;
91      - add new S/R CPL_IMPORT_CPLPARMS to import coupling-exchange selectors
92        from coupler ; called from initialise_fixed.F, after PACKAGES_BOOT and
93        before PACKAGES_READPARMS;
94      verification/cpl_aim+ocn/:
95      - update ATMIDS.h & OCNIDS.h (in shared_code) and use new parameter file
96        "data.cpl" for coupler (in input_cpl).
97    o eesupp/inc:
98      - change the MPI-global-sum default (in CPP_EEOPTIONS.h) to:
99        #define GLOBAL_SUM_ORDER_TILES (only affects MPI built of global_sum_tile.F)
100        to always cumulate tile local-sum in the same order (still uses
101        MPI_Allreduce like standard code).
102      - in verification experiment code, remove local CPP_EEOPTIONS.h_mpi files
103        that are now identical to standard version (in eesupp/inc).
104    o pkg/shelfice:
105      - add SHELFICETransCoeffTFile for initializing spatially varying
106        heat and salt transfer coefficients
107    o pkg/atm_compon_interf & ocn_compon_interf:
108      - combine into 1 (new) S/R CPL_EXPORT_IMPORT_DATA the two previous
109        S/R CPL_EXPORT_MY_DATA & CPL_IMPORT_EXTERNAL_DATA
110      - move bi,bj loops inside S/R OCN_STORE_MY_DATA
111    o pkg/atm_ocn_coupler:
112      - initialise to zero ATMVARS.h & OCNVARS.h arrays.
113    o pkg/rbcs:
114      - select RBCS-mask for Temp & Salt the same way as for pTracer ; this allows
115        to compile with maskLEN=1 when all tracers use the same RBCS-mask.
116      - add a short report (to STDOUT) about RBCS-mask settings.
117    
118    checkpoint65p (2015/10/23)
119    o pkg/seaice/seaice_evp.F: fix store directives and key computations, since
120        there is no adjoint test for EVP, we don't know what it does to the adjoint
121        solution, but at least there are no more recomputation warnings left
122    o pkg/seaice/seaice_evp.F: slight modification of averaging so that EVP stands
123        a chance of giving the same results as a fully converged VP (JFNK) solver
124    o tools/adjoint_options/adjoint_diva:
125      - fix bug (typo) in Tang-Linear FLAGS setting for MPI + DIVA
126    o pkg/streamice:
127      - spotted bug in streamice_driving_stress using dyG where should have been dxG
128    o pkg/exf:
129      - remove STOP statement that prevented to use wind or (wind-)stress
130        interpolation for constant-in-time forcing fields (wind/stress period = 0).
131    o pkg/seaice:
132      - replace SEAICE_EVP_USE_ADAPTATION by run time parameters, requires
133        5 additionals 2D fields and 6 new store directives
134      - change logic in seaice_readparms.F: EVP code can now be turned on in
135        various ways, setting SEAICE_deltaTev is no longer required,
136        alternatively set SEAICE_evpAlpha/Beta, SEAICEuseEVPstar, SEAICEuseEVPrev,
137        or SEAICEaEVPcoeff
138    o pkg/shelfice/shelfice_thermodynamics.F
139      - redefining uLoc/vLoc to u/v, instead of 2u/v
140    o pkg/seaice/seaice_evp.F: introduce "adaptive EVP" by Madlen Kimmritz
141      - this is an intermediate state of a truely converging EVP that has
142        the potential of outperforming implicit VP methods, I do not recommend
143        using it yet.
144      - for now, "adaptive EVP" is turned on by setting SEAICE_EVP_USE_ADAPTATION
145        and all parameters are hardwired
146      - for convergence it still requires very smooth regularisations, that means,
147        if SEAICE_DELTA_SMOOTHREG is defined, deltaCreg=deltaC+deltaMin, which is
148        different from the VP case with deltaCreg=sqrt(deltaC**2+deltaMin**2); also
149        specific averaging appears to be required, still subject to tuning
150      - still needs cleaning and I need to turn parameter into runtime parameters
151      - add code to compute and print residuals of iteration, compile with
152        defining ALLOW_SEAICE_EVP_RESIDUAL to enable it
153    o pkg/seaice/seaice_evp.F: fix a bug (factor of four in front of e12Csq)
154      that entered with r1.54 on Sep04, 2015, -> update results
155    
156    checkpoint65o (2015/09/14)
157    o pkg/mom_vecinv & mom_common:
158      - add deep-atmosphere geometry factor in mom_calc_visc.F + in routines
159        called from there.
160      - add anelastic and deep-atmosphere geometry factor in pkg/mom_vecinv ; this
161        allows to use Vector-Invariant form in deep atmos and anelastic formulation
162    o pkg/seaice: introduce fast ice parameterisation following Itkin et al. (2015)
163      and Koenig-Beatty+Holland (2012)
164      - two new parameters SEAICE_tensilFac and SEAICE_tensilDepth
165      - global 2D field tensileStrength, computed in seaice_calc_ice_strength
166      - requires an extra input argument for S/R seaice_calc_viscosities
167      - tensileStrength's depth dependence is different from Itkin et al. (2015)
168        (to be changed and played with, for now exponential)
169    o pkg/seaice: introduce new parameter SEAICEscaleSurfStress (default = .FALSE.)
170      - if TRUE scale ice-ocean and ice-atmosphere stress acting on sea ice
171        by AREA according to Connelly et al. (2004), JPO.
172      - For EVP and the LSR solver, the implicit part of the drag term is
173        the only non-zero term in the denominator when there is no ice (which
174        prevented running the model with zero ice-ocean drag). If
175        SEAICEscaleSurfStress = .TRUE., this results in a division by zero
176        (or zero main diagonals BU/BV) which need to be caught. A practical
177        consequence is that for open water, the momentum equation reduce
178        to trivially 0 = 0 + 0 (for EVP). For LSR, BU/BV are reset to 1, if
179        they happen to be zero, often leading to a non-zero solution over
180        open water.
181    o pkg/seaice: revise EVP code (seaice_evp.F) in preparation for a more
182        efficient EVP method.
183      - introduce area-weighted averages for e12 (analogously to
184        seaice_calc_viscosities.F); this totally changes lab_sea.hb87 (2 digits
185        remain, but also changing the order of terms in the previous average
186        changed the results as much) -> update experiment
187      - add SEAICE_DELTA_SMOOTHREG code
188      - disentangle computation of zetaC/deltaC and zetaZ/deltaZ, also for
189        TEM-code
190      - adjust loop bounds so that only required fields are computed
191      - add new averaging code for zetaZ/deltaZ (again similar to
192        seaice_calc_viscosities.F), inactive by default for now (will change
193        results again), but will replace old code eventually
194    o eesupp/src:
195      - add an other alternative for multi-proc GLOBAL_SUM (in global_sum_tile.F)
196        to always cumulate tile local-sum in the same order
197        (option #define GLOBAL_SUM_ORDER_TILES in CPP_EEOPTIONS.h).
198        Still uses MPI_Allreduce (like standard code) but on array of tiles
199        and should be faster than GLOBAL_SUM_SEND_RECV code.
200      - switch almost all verification experiments that use GLOBAL_SUM_SEND_RECV
201        (defined in CPP_EEOPTIONS.h_mpi) to GLOBAL_SUM_ORDER_TILES instead.
202      - add CPP_EEOPTIONS.h_mpi with GLOBAL_SUM_ORDER_TILES defined in 14 more exp.:
203         aim.5l_cs, cheapAML_box, deep_anelastic, dome, fizhi-cs-32x32x40,
204         fizhi-cs-aqualev20, fizhi-gridalt-hs, global_ocean_ebm, matrix_example,
205         natl_box, solid-body.cs-32x32x1, tutorial_advection_in_gyre,
206         tutorial_baroclinic_gyre and tutorial_held_suarez_cs.
207    
208    checkpoint65n (2015/07/29)
209    o pkg/thsice:
210      - add a warning when used with pkg/aim but without updating SST
211        (stepFwd_oceMxL=F & useCoupler=F & tauRelax_MxL<>-1 ).
212  o pkg/offline:  o pkg/offline:
213    - change where Offline-Fields are loaded, from load_fields_driver.F to    - change where Offline-Fields are loaded, from load_fields_driver.F to
214      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 221  o pkg/offline:
221      time-step, both with GM & KPP files and with recomputing these fields;      time-step, both with GM & KPP files and with recomputing these fields;
222      b) no needs to switch on staggerTimeStep anymore;      b) no needs to switch on staggerTimeStep anymore;
223      c) simplify rescaling of offline horiz. velocity with Non-Lin Free-Surf.      c) simplify rescaling of offline horiz. velocity with Non-Lin Free-Surf.
224    - 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).  
225  o pkg/offline:  o pkg/offline:
226    - change (rarely used) offset-iteration parameter to an offset time (in s):    - change (rarely used) offset-iteration parameter to an offset time (in s):
227      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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