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revision 1.905 by mlosch, Wed Nov 7 11:13:21 2007 UTC revision 1.1012 by jmc, Sat Aug 2 23:12:23 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o exch2:
8      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
9      - no longer depend on the order sequence (N,S,E,W).
10      - 3rd exchange no longer needed (tested with 24 tiles).
11      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
12      - exch_UV_A-grid readily available (but not yet tested).
13      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
14      (both are no longer needed) in exch_uv: no effect in forward run; but
15       get truncation error differences with adjoint exch.
16    o exch2:
17     - change index-bounds storage (moved from target to local tile,
18       more intuitive this way) ; rename/remove some variables.
19     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
20    
21    checkpoint61a
22    o exch2/matlab-topology-generator:
23      fix bug in index bounds for N-S internal exchange (hard to tell if this
24      had any effect on the solution).
25    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
26      is exceeded
27    o testreport: modify syntax of awk, so that it works also with
28      awk, and not only with nawk and gawk
29    
30    checkpoint61
31    o autodiff
32      Change default for TAF usage by removing argument '-nonew_arg'
33      This changes TAF subroutine argument list (ordering of active var.)
34      Omission of this flag leads to incompatibility w.r.t. TAMC
35      To restore TAMC-compatibility, need following modifs:
36      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
37      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
38      Tested TAF version is 1.9.22
39      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
40    
41    checkpoint60
42    --->>> This is the last checkpoint for which generating the adjoint
43    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
44    --->>> by default.
45    --->>> Future checkpoints will ommit this flag by default.
46    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
47    o pkg/grdchk: Add gradient check to etan0 perturbations.
48    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
49    o pkg/autodiff: more flexibility in zeroadj.
50      model/src: modifying do_oceanic_phys.F accordingly.
51    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
52    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
53      special setup of gmredi for which the adjoint is stable
54      enough for parameter optimization.
55    o bridging the gap between eddy stress and GM.
56      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
57          along with a change in CPP option (now ALLOW_EDDYPSI).
58      -> when using GM w/ GM_AdvForm:
59          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
60          is applied either in the tracer Eq. or in momentum Eq.
61          depending on data.gmredi (intro. GM_InMomAsStress).
62      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
63      The key modifications are in model/src/taueddy_external_forcing.F
64      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
65    
66    checkpoint59r
67    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
68      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
69      fix option to read coriolis(@ cell-corner) from files with CS-grid.
70    o pkg/mnc: add some attributes to standard 1D-coordinate variables
71    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
72      mass points, when using mnc for output
73      - add runtime parameter (missing_value, missing_value_int) to override
74        default (which is the value of getcon('UNDEF'))
75    o pkg/mnc: prepare mnc for the actual use of missing values with the
76      diagnostics package: small fix in mnc_cw_readwrite.template and more
77      initialisation of never used fields
78      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
79      versions
80    o pkg/thsice/thsice_ini_vars.F added default initial values so that
81      thermodynamics sea ice solver does not blow up when some initial fields
82      are missing.
83    o move from external_forcing_surf.F to ini_forcing.F
84      the p-coord. hack consisting in using pLoad to set phi0surf ;
85      update output of tutorial_global_oce_in_p (affected @ truncation level).
86    o Freshen up a bit hs94.1x64x5, notably:
87      remove rotationPeriod and tRef=5*0. (adjoint only), and add
88      exactConserv=.TRUE.
89    o pkg/generic_advdiff:
90      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
91      applies to files where Temperature & Salinity 2nd Order moments are used.
92    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
93      this uses a dynamically allocated internal state data structure
94      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
95      and requires a fortran 90 compiler
96    
97    checkpoint59q
98    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
99       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
100    o Refresh tutorial_global_oce_biogeo, notably:
101      - change bathymetry (put back seamounts in ACC, use hFacs)
102      - change EOS (POLY3 --> JMD95Z)
103      - use Bryan-Lewis vertical diffusivity
104      - use multidimensional advection
105      - remove old virtual virtual in dic pkg, now done through ptracer pkg
106      - change a couple of parameters in dic pkg
107    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
108    o pkg/obcs: change default to OBCSfixTopo = .true.,
109      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
110      - replace "debugMode" with "debugLevel .GE. debLevB"
111    o implementation of TAF directives for gchem,cfc,dic
112    o remove "exp5" (replaced by tutorial_deep_convection).
113    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
114      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
115      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
116      --> changes results in exp4, seaice_obcs
117    o tutorial_deep_convection :
118      update the set-up and increase resolution and domain size ; start
119      from pseudo initial conditions = output at t=120mn in order to see
120      something happening when running testreport.
121    o pkg/seaice: add os7mp as an advection scheme
122                  add check for advection schemes
123                  add a flag for restoring T and S underneath sea ice
124    o pkg/my82: add netcdf-support and diagnostics
125    o thsice pkg:
126      - Now hsMax limits snow height by turning it into ice following
127        flooding scheme (and now conserving energy)
128      - Slight rewriting of the formula in thsice_calc_thick.F
129      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
130      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
131    
132    checkpoint59p
133    o gchem / dic / cfc :
134      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
135      - add new parameter files: "data.dic" & "data.cfc" ;
136      - various re-arrangement in initialisation & header file ;
137      - fix tutorial_global_oce_biogeo for multi-threaded test.
138    o pkg/dic: test for "pickup_dic" file when restarting ;
139      if no pickup-file, can restart with a re-initialised pH (same as it did
140      before) providing pickupStrictlyMatch is set to False.
141    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
142      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
143    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
144      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
145    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
146     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
147       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
148    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
149       scheme to use for vorticty-term ;
150     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
151       (with default selectVortScheme, return to original discretisation)
152     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
153    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
154    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
155      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
156      also fix diagnostics VISCAHW & VISCA4W.
157    
158    checkpoint59o
159    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
160    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
161      move a few statemens out the main loop into separate loops
162    o pkg/shelfice:
163      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
164        (kg/m^2/s), does not break tests, because in verification/isomip,
165        rhoConstFresh=rhoConst (by accident)
166      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
167      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
168        new file model/src/seawater.F, so that they are available for all pkgs.
169      - convert potential temperature into in-situ temperature. This changes the
170        isomip tests => update tests
171    o add a flag writePickupAtEnd (default=true) to be able to suppress
172      writing a pickup at the last timestep
173    o tools/mpack-1.6 :
174      - disable automake (not working) and autoconf (not needed).
175      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
176        also cleaner with much less compilation warnings.
177    o pkg/profiles:
178      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
179      (for "less than 32 characters name" compiler requirement)
180    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
181      conditions that have a different sampling frequency than S/T/U/V obcs
182    o pkg/diagnostics (stats-diags):
183      - fix global Min/Max in case 1 processor get only empty tiles
184    o genmake2: replace (4 times)
185         make genmake_tc_1.o >> genmake_warnings 2>&1
186      with
187         COMM="$CC $CFLAGS -c genmake_tc_1.c"
188         echo $COMM >> genmake_warnings
189         $COMM >> genmake_warnings 2>&1
190      to make genmake2 always see the value of CC as specified in the optfile.
191    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
192      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
193      - modify verification advect_cs test to test SOM-advection on CS-grid.
194    o pkg/ctrl:
195      - Rewrite of ctrl_map_ini_ecco.F,
196        introducing a generic routine (ctrl_map_ini_gen.F).
197      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
198    
199    checkpoint59n
200    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
201      number in dedicate array "hdiag":
202      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
203        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
204      - many small changes (integer format) for large number of diagnostics
205      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
206        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
207    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
208      usingSphericalGrid, this allows to define the rotated grid coordinates
209      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
210      geographical coordinates according to the inverse of the rotation defined
211      by the Euler angles, so that Coriolis parameter and online-interpolation by
212      exf works with the geographical coordinates on XC/YC/XG/YG.
213      Naturally, this feature does not work with all packages, so some
214      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
215      profiles), because there the coordinates are assumed to be regular
216      spherical grid coordinates.
217    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
218      - introduce isopycnal diffusion coefficient control.
219    o tools/adjoint_options:
220      - additional control vector components.
221    o pkg/mnc: have mnc create marginally meaning full coordinate variables
222      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
223    o pkg/mypackage:
224      - add example of read/write pickup for state-var ;
225      - add entry points to the main code for state-vars diags & write-pickup.
226    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
227      transitions for useExfYearlyFields
228      - add new subroutine that determines the file to read from for
229        use*YearlyFields = .TRUE. and .FALSE.
230      - add a verification experiment to global_with_exf that tests
231        useExfYearlyFields with USE_EXF_INTERPOLATION defined
232    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
233      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
234      subroutines (which could be generated from a template, because they are
235      almost identical), for now they are included in obcs_prescribe_read.F for
236      simplicity
237    o pkg/exf:
238      - add a little more diagnostic to exf_interp_read (in analogy to
239        mds_read_field, can be turned off with debugLevel < debugLevA=1)
240      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
241        ugly but fast by unrolling short inner loops, inserting a unroll=8
242        directive in routine lagran, and splitting a loop and making do while the
243        outermost loop (the latter requires the intoduction of index arrays)
244    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
245    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
246      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
247    o verification/seaice_obcs: updated for restart test and latest options
248    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
249      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
250      for now this is only available for the C-grid code and also within
251      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
252    
253    checkpoint59m
254    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
255      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
256    o gad_som : fix flux output (& diagnostics) to have same units as other  
257      advection scheme fluxes (was previously multiplied by deltaT).  
258    o added verification/seaice_obcs both to test seaice open boundaries
259      and to provide an example matlab scrpt for generating them
260    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
261    o pkg/salt_plume: clean up salt_plume_frac.F to
262      remove redundancy in PlumeMethod 1 and 4
263    o pkg/kpp: added saltplume diagnostics
264    o pkg/obcs and pkg/seaice:
265      - do not set uice and vice to zero when OB*icefile are unspecified
266      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
267      - moved seaice tracer obcs after call to seaice_growth
268    o pkg/salt_plume: added various options for salt plume depth
269      criterion and for vertical distribution of the salt
270    
271    checkpoint59l
272    o pkg/ptracers: new version of ptracers pickup:
273      read meta file and write only fields which are needed to restart.
274      ( same logic as main pickup file ; also using pickupStrictlyMatch )
275    o pkg/seaice:
276      - add timescale for melting due to warm mixed layer as a means of
277        setting SEAICE_availHeatFrac more conveniently
278      - add a CPP-flag/runtime parameter check for flooding algorithm
279      - reformulated availHeat in seaice_growth.F to be independent of AREA
280    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
281      unit changes
282    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
283    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
284      SX vector computer.
285    o pkg/seaice:
286      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
287        seaice forcing fields can now be read only through pkg/exf
288      - removed some unused halos
289    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
290    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
291      or U/VICE from U/VWIND before computing U/VSTRESS
292    
293    checkpoint59k
294    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
295      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
296    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
297      all experiments pass when compile with un-initialised var. checking option.
298    o added pkg/salt_plume
299    o script to test restart (for now, in MITgcm_contrib/jmc_script)
300    o pkg/seaice: new read/write pickup version.
301      read meta file and write only fields which are needed to restart.
302      ( same logic as main pickup file ; also using pickupStrictlyMatch )
303    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
304    o lab_sea.hb87: modify the domain & update output.hb87.txt :
305      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
306      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
307      process. Fixed here by closing the domain at the Northern boundary.
308    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
309    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
310      a set of consecutive levels in/from a 3-D array.
311    o pkg/ptracers:
312      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
313      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
314    
315    checkpoint59j
316    o in pkgs: dic, obcs, offline, rbcs:
317      standard way to compute coeff. for time interpolation between 2 time reccords
318      which retains full precision (& make results less dependent on compiler).
319      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
320  o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those  o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
321    packages instead of reading ice cover and wind speed separately    packages instead of reading ice cover and wind speed separately
322  o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h  o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h

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