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revision 1.2173 by jmc, Sat Jul 18 22:15:07 2015 UTC revision 1.2217 by jmc, Fri Dec 25 00:55:07 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/dic:
8      - fix bug (added on 2014/08/30) in dic_atmos.F for the case dic_int1= 2 or 3.
9    o pkg/seaice: add new parameter SEAICEpressReplFac to choose between
10        pressure replacement method (=1., default) or original Hibler (1979) (=0.)
11        value can be from domain [0,1] to average between the two methods
12    o pkg/atm_phys:
13      - allow to provide 2-d map of albedo and mixed-layer depth from files (but
14        hold fixed in time).
15    
16    checkpoint65r (2015/12/21)
17    o pkg/seaice:
18        fix bug in tridiagonal solvers for SEAICE_OLx/y>0, this affects the JFNK
19        solver (offline.dyn_jfnk) and global_ocean.cs32x15.seaice -> updated
20    o pkg/seaice:
21      - fix a bug in computing areaS in (J-J -> J-1) that affects runs
22        when SEAICEscaleSurfStress=.TRUE.,
23      - apply areaW and areaS in S/R seaice_calc_lhs
24    o pkg/atm_phys:
25      - add diagnostics for 3-D, Nr+1 levels diagnostics of radiative fluxes
26        (shortwave & longwave, net & downward) and diagnostics of temp. tendency
27        for individual contribution (convection, LSC cond, radiation)
28      - add Ruth Geen etal, GRL 2016, radiation optionis (see paper supp.
29        information); activated with: solar_exponent=0. and wv_exponent=-1.
30    o pkg/ggl90:
31      - within IDEMIX add upper limit for horizontal group velocity to
32        avoid instability problems in the explicit horizontal diffusion term for
33        long time steps or high resolution
34    o pkg/diagnostics:
35      - simplify setting of local-array size in diagstats_output.F: uses "numLevels"
36        (from DIAGNOSTICS_SIZE.h) to allow to write out more than Nr levels.
37    o testreport:
38      - remove "-v" (verbose option) in default mpirun command.
39    o pkg/seaice/seaice_growth:
40      - catch potential division by zero in ITD code, does not change
41        verification results
42    o pkg/ecco:
43      - retire old codes to the Attic. The calls to retired functions are
44        left in a commented form in case they ever need to be re-activated.
45      - ecco_check.F: issue warning if any old CPP option is
46        defined that corresponds to retired codes -- then stop.
47    o pkg/atm_compon_interf:
48      - change seaice fraction (use for OCN dic surf.flux) stored and sent to
49        coupler: use last time-step value instead of average over cplSendFrq_iter
50        time-step, similar to what is done for seaIceMass.
51        This will affect results (pkg/dic) of coupled ATM-OCN+dic set-up.
52    o eesupp & genmake2:
53      - from Jinxuan Zhu: change etime fct call to S/R call (fix gfortran ETIME);
54        <= remove until a fix is found for some ifort version on ia32 machine.
55    o pkg/seaice/seaice_evp:
56      - refine residual computation
57    
58    checkpoint65q (2015/11/18)
59    o pkg/seaice/seaice_evp:
60      - fix residual computations so that they no longer affect the actual
61        simulation code
62      - fix seaice_readparams to be able to actually set new parameters
63        SEAICEaEVPcStar and SEAICEaEVPalphaMin, also fix logic a little
64    o model/src:
65      - fix wrong truncation (single prec) from "FLOAT" function in expressions
66        like: deltaT*FLOAT(myIter) when myIter is large:
67         a) replaced by DFLOAT (if not seen by TAF);
68         b) remove "FLOAT" and use implicit type conversion (if seen by TAF).
69    o pkg/aim_v23:
70      - write/read the expected CO2 pickups (from S/R AIM_DO_CO2): fix reading
71        when pickupSuff is set ; do write rolling pickups + at the end of the run.
72    o pkg/atm_ocn_coupler + ocn_compon_interf:
73      - in prep for using pkg/seaice Dyn in coupled set-up, implement sequential
74        coupling option-1: ATM -(cpl)-> OCN and then OCN -(cpl)-> ATM ;
75        add corresponding call in DO_OCEANIC_PHYS.
76    o coupler pkgs:
77      Start a new way to set-up optionally-exchanged variables (previously, only
78       there for exchange_DIC): switch on/off from 1 place, at run-time, in coupler
79       data.cpl (new) instead of at compile time in ATMIDS.h & OCNIDS.h ;
80       send switch to ATM & OCN compon before reading their own "data.cpl" (so that
81       compononent param default can be set accordingly).
82      Note: this new switch (cpl_exchange_[xxx]) is not a per variable switch
83       but rather applies to a group a fields (going both ways like for DIC)
84       and corresponds to an option of coupling config.
85      coupler (pkg/atm_ocn_coupler):
86      - change parameter file from "data" to "data.cpl" (in cpl_read_params.F),
87        and read namelist directly (without eessup S/R calls) instead of
88        in the very un-flexible old way, 1 param per line, in fixed order;
89      - add error-counter to track errors (e.g., missing "data.cpl") and to stop
90        cleanly in CPL_CHECK_CPLCONFIG
91      - add new coupling-exchange selectors (some not yet active) including
92        cpl_exchange_DIC (to set to 3 to replace atmCpl_exchange_DIC=T in ATMIDS.h
93                                             and ocnCpl_exchange_DIC=T in OCNIDS.h);
94      - add 2 new S/R (CPL_SEND_ATM/OCN_CPLPARMS) to send coupler-params to each
95        component ; called directly from coupler.F, after comp. registrations;
96      - rename few variable-ID names (in ATMIDS.h & OCNIDS.h):
97         atm/ocnSeaIceName --> atm/ocnSIceMassName ; atm/ocnFCO2Name ->
98          -> atm/ocnCO2FluxName ; atm/ocnWSpdName --> atm/ocnWindSpdName
99      components (pkg/atm_ & ocn_compon_interf):
100      - add ATM/OCN_CPL_OPTIONS.h in component pkgs and include the corresponding
101        CPP header file in all pkg source files.
102      - move checking of comp. configs out of cpl_exch_configs.F into new S/R
103        ATM/OCN_CHECK_CPLCONFIG;
104      - add error-counter to track errors (e.g., in "data.cpl") and to stop
105        cleanly in ATM/OCN_CHECK_CPLCONFIG;
106      - add new S/R CPL_IMPORT_CPLPARMS to import coupling-exchange selectors
107        from coupler ; called from initialise_fixed.F, after PACKAGES_BOOT and
108        before PACKAGES_READPARMS;
109      verification/cpl_aim+ocn/:
110      - update ATMIDS.h & OCNIDS.h (in shared_code) and use new parameter file
111        "data.cpl" for coupler (in input_cpl).
112    o eesupp/inc:
113      - change the MPI-global-sum default (in CPP_EEOPTIONS.h) to:
114        #define GLOBAL_SUM_ORDER_TILES (only affects MPI built of global_sum_tile.F)
115        to always cumulate tile local-sum in the same order (still uses
116        MPI_Allreduce like standard code).
117      - in verification experiment code, remove local CPP_EEOPTIONS.h_mpi files
118        that are now identical to standard version (in eesupp/inc).
119    o pkg/shelfice:
120      - add SHELFICETransCoeffTFile for initializing spatially varying
121        heat and salt transfer coefficients
122    o pkg/atm_compon_interf & ocn_compon_interf:
123      - combine into 1 (new) S/R CPL_EXPORT_IMPORT_DATA the two previous
124        S/R CPL_EXPORT_MY_DATA & CPL_IMPORT_EXTERNAL_DATA
125      - move bi,bj loops inside S/R OCN_STORE_MY_DATA
126    o pkg/atm_ocn_coupler:
127      - initialise to zero ATMVARS.h & OCNVARS.h arrays.
128    o pkg/rbcs:
129      - select RBCS-mask for Temp & Salt the same way as for pTracer ; this allows
130        to compile with maskLEN=1 when all tracers use the same RBCS-mask.
131      - add a short report (to STDOUT) about RBCS-mask settings.
132    
133    checkpoint65p (2015/10/23)
134    o pkg/seaice/seaice_evp.F: fix store directives and key computations, since
135        there is no adjoint test for EVP, we don't know what it does to the adjoint
136        solution, but at least there are no more recomputation warnings left
137    o pkg/seaice/seaice_evp.F: slight modification of averaging so that EVP stands
138        a chance of giving the same results as a fully converged VP (JFNK) solver
139    o tools/adjoint_options/adjoint_diva:
140      - fix bug (typo) in Tang-Linear FLAGS setting for MPI + DIVA
141    o pkg/streamice:
142      - spotted bug in streamice_driving_stress using dyG where should have been dxG
143    o pkg/exf:
144      - remove STOP statement that prevented to use wind or (wind-)stress
145        interpolation for constant-in-time forcing fields (wind/stress period = 0).
146    o pkg/seaice:
147      - replace SEAICE_EVP_USE_ADAPTATION by run time parameters, requires
148        5 additionals 2D fields and 6 new store directives
149      - change logic in seaice_readparms.F: EVP code can now be turned on in
150        various ways, setting SEAICE_deltaTev is no longer required,
151        alternatively set SEAICE_evpAlpha/Beta, SEAICEuseEVPstar, SEAICEuseEVPrev,
152        or SEAICEaEVPcoeff
153    o pkg/shelfice/shelfice_thermodynamics.F
154      - redefining uLoc/vLoc to u/v, instead of 2u/v
155    o pkg/seaice/seaice_evp.F: introduce "adaptive EVP" by Madlen Kimmritz
156      - this is an intermediate state of a truely converging EVP that has
157        the potential of outperforming implicit VP methods, I do not recommend
158        using it yet.
159      - for now, "adaptive EVP" is turned on by setting SEAICE_EVP_USE_ADAPTATION
160        and all parameters are hardwired
161      - for convergence it still requires very smooth regularisations, that means,
162        if SEAICE_DELTA_SMOOTHREG is defined, deltaCreg=deltaC+deltaMin, which is
163        different from the VP case with deltaCreg=sqrt(deltaC**2+deltaMin**2); also
164        specific averaging appears to be required, still subject to tuning
165      - still needs cleaning and I need to turn parameter into runtime parameters
166      - add code to compute and print residuals of iteration, compile with
167        defining ALLOW_SEAICE_EVP_RESIDUAL to enable it
168    o pkg/seaice/seaice_evp.F: fix a bug (factor of four in front of e12Csq)
169      that entered with r1.54 on Sep04, 2015, -> update results
170    
171    checkpoint65o (2015/09/14)
172    o pkg/mom_vecinv & mom_common:
173      - add deep-atmosphere geometry factor in mom_calc_visc.F + in routines
174        called from there.
175      - add anelastic and deep-atmosphere geometry factor in pkg/mom_vecinv ; this
176        allows to use Vector-Invariant form in deep atmos and anelastic formulation
177    o pkg/seaice: introduce fast ice parameterisation following Itkin et al. (2015)
178      and Koenig-Beatty+Holland (2012)
179      - two new parameters SEAICE_tensilFac and SEAICE_tensilDepth
180      - global 2D field tensileStrength, computed in seaice_calc_ice_strength
181      - requires an extra input argument for S/R seaice_calc_viscosities
182      - tensileStrength's depth dependence is different from Itkin et al. (2015)
183        (to be changed and played with, for now exponential)
184    o pkg/seaice: introduce new parameter SEAICEscaleSurfStress (default = .FALSE.)
185      - if TRUE scale ice-ocean and ice-atmosphere stress acting on sea ice
186        by AREA according to Connelly et al. (2004), JPO.
187      - For EVP and the LSR solver, the implicit part of the drag term is
188        the only non-zero term in the denominator when there is no ice (which
189        prevented running the model with zero ice-ocean drag). If
190        SEAICEscaleSurfStress = .TRUE., this results in a division by zero
191        (or zero main diagonals BU/BV) which need to be caught. A practical
192        consequence is that for open water, the momentum equation reduce
193        to trivially 0 = 0 + 0 (for EVP). For LSR, BU/BV are reset to 1, if
194        they happen to be zero, often leading to a non-zero solution over
195        open water.
196    o pkg/seaice: revise EVP code (seaice_evp.F) in preparation for a more
197        efficient EVP method.
198      - introduce area-weighted averages for e12 (analogously to
199        seaice_calc_viscosities.F); this totally changes lab_sea.hb87 (2 digits
200        remain, but also changing the order of terms in the previous average
201        changed the results as much) -> update experiment
202      - add SEAICE_DELTA_SMOOTHREG code
203      - disentangle computation of zetaC/deltaC and zetaZ/deltaZ, also for
204        TEM-code
205      - adjust loop bounds so that only required fields are computed
206      - add new averaging code for zetaZ/deltaZ (again similar to
207        seaice_calc_viscosities.F), inactive by default for now (will change
208        results again), but will replace old code eventually
209    o eesupp/src:
210      - add an other alternative for multi-proc GLOBAL_SUM (in global_sum_tile.F)
211        to always cumulate tile local-sum in the same order
212        (option #define GLOBAL_SUM_ORDER_TILES in CPP_EEOPTIONS.h).
213        Still uses MPI_Allreduce (like standard code) but on array of tiles
214        and should be faster than GLOBAL_SUM_SEND_RECV code.
215      - switch almost all verification experiments that use GLOBAL_SUM_SEND_RECV
216        (defined in CPP_EEOPTIONS.h_mpi) to GLOBAL_SUM_ORDER_TILES instead.
217      - add CPP_EEOPTIONS.h_mpi with GLOBAL_SUM_ORDER_TILES defined in 14 more exp.:
218         aim.5l_cs, cheapAML_box, deep_anelastic, dome, fizhi-cs-32x32x40,
219         fizhi-cs-aqualev20, fizhi-gridalt-hs, global_ocean_ebm, matrix_example,
220         natl_box, solid-body.cs-32x32x1, tutorial_advection_in_gyre,
221         tutorial_baroclinic_gyre and tutorial_held_suarez_cs.
222    
223    checkpoint65n (2015/07/29)
224    o pkg/thsice:
225      - add a warning when used with pkg/aim but without updating SST
226        (stepFwd_oceMxL=F & useCoupler=F & tauRelax_MxL<>-1 ).
227  o pkg/offline:  o pkg/offline:
228    - change where Offline-Fields are loaded, from load_fields_driver.F to    - change where Offline-Fields are loaded, from load_fields_driver.F to
229      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 236  o pkg/offline:
236      time-step, both with GM & KPP files and with recomputing these fields;      time-step, both with GM & KPP files and with recomputing these fields;
237      b) no needs to switch on staggerTimeStep anymore;      b) no needs to switch on staggerTimeStep anymore;
238      c) simplify rescaling of offline horiz. velocity with Non-Lin Free-Surf.      c) simplify rescaling of offline horiz. velocity with Non-Lin Free-Surf.
239    - 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).  
240  o pkg/offline:  o pkg/offline:
241    - change (rarely used) offset-iteration parameter to an offset time (in s):    - change (rarely used) offset-iteration parameter to an offset time (in s):
242      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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