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revision 1.905 by mlosch, Wed Nov 7 11:13:21 2007 UTC revision 1.1031 by jmc, Tue Oct 21 18:07:02 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 bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
8      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
9    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
10    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
11      does not become too large (to avoid precision problems in implicit-diffusion
12      solver); update ideal_2D_oce output.
13    o pkg ggl90:
14      - in ggl90_cal.F: compute only one set of visc/diff, used to
15        step forward TKE/T/S/momentum
16      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
17        have Prandlt =1)
18    o gmredi(fm07):
19      - add lower limit on Transition layer thickness + lower limit on 1/lambda
20      - allow to set few more params from data.gmredi
21    o pkg ggl90:
22          - add missing sqrt(2) factor in computation of mixing length
23            scale in ggl90_calc.F
24            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
25    
26    checkpoint61d
27    o adjoint modifs
28      - adapt to new field rhoInSitu
29      - allow to revert from StoreDynVars2D, StoreDynVars3D
30        to individual fields
31        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
32    o store 3-D (in-situ) density in commom block (DYNVARS.h)
33     - save 1 rho computation.
34     - no longer modify T & S inland when using down_slope pkg.
35    o gad_som : allow to switch to SOM advection for T & S without corresponding
36      pickup files (using new S/R: MDS_CHECK4FILE).
37    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
38      (for useSingleCpuIO to work in multi-threaded)
39    o pkg/shelfice:
40     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
41       with SHELFICEtopoFile in data.shelfice
42     - move code for reading ice shelf topography and modifying hFacC into separate
43       subroutines of the shelfice package
44     - separate initialisation of "fixed" and "variable" variables
45     - kTopC is not (yet) replaced by kSurfC, although this is possible
46    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
47    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
48      and rename:
49      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
50      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
51    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
52    
53    checkpoint61c
54    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
55      to add mass source/sink of fluid in the interior (3-D generalisation
56      of oceanic real-fresh water flux).
57    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
58    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
59    o new pkg: down_slope
60      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
61      - presently, modify T & S inland (dwnslp_calc_rho.F).
62        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
63      - implementation for ocean in P-coords not tested.
64      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
65    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
66      (to facilitate conversion of oceanic pkg to p-coordinate).
67    o change FIND_RHO to FIND_RHO_2D :
68      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
69    o new pkg: cheapaml
70    
71    checkpoint61b
72    o exch2:
73      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
74      - no longer depend on the order sequence (N,S,E,W).
75      - 3rd exchange no longer needed (tested with 24 tiles).
76      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
77      - exch_UV_A-grid readily available (but not yet tested).
78      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
79      (both are no longer needed) in exch_uv: no effect in forward run; but
80       get truncation error differences with adjoint exch.
81    o exch2:
82     - change index-bounds storage (moved from target to local tile,
83       more intuitive this way) ; rename/remove some variables.
84     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
85    
86    checkpoint61a
87    o exch2/matlab-topology-generator:
88      fix bug in index bounds for N-S internal exchange (hard to tell if this
89      had any effect on the solution).
90    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
91      is exceeded
92    o testreport: modify syntax of awk, so that it works also with
93      awk, and not only with nawk and gawk
94    
95    checkpoint61
96    o autodiff
97      Change default for TAF usage by removing argument '-nonew_arg'
98      This changes TAF subroutine argument list (ordering of active var.)
99      Omission of this flag leads to incompatibility w.r.t. TAMC
100      To restore TAMC-compatibility, need following modifs:
101      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
102      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
103      Tested TAF version is 1.9.22
104      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
105    
106    checkpoint60
107    --->>> This is the last checkpoint for which generating the adjoint
108    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
109    --->>> by default.
110    --->>> Future checkpoints will ommit this flag by default.
111    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
112    o pkg/grdchk: Add gradient check to etan0 perturbations.
113    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
114    o pkg/autodiff: more flexibility in zeroadj.
115      model/src: modifying do_oceanic_phys.F accordingly.
116    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
117    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
118      special setup of gmredi for which the adjoint is stable
119      enough for parameter optimization.
120    o bridging the gap between eddy stress and GM.
121      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
122          along with a change in CPP option (now ALLOW_EDDYPSI).
123      -> when using GM w/ GM_AdvForm:
124          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
125          is applied either in the tracer Eq. or in momentum Eq.
126          depending on data.gmredi (intro. GM_InMomAsStress).
127      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
128      The key modifications are in model/src/taueddy_external_forcing.F
129      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
130    
131    checkpoint59r
132    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
133      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
134      fix option to read coriolis(@ cell-corner) from files with CS-grid.
135    o pkg/mnc: add some attributes to standard 1D-coordinate variables
136    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
137      mass points, when using mnc for output
138      - add runtime parameter (missing_value, missing_value_int) to override
139        default (which is the value of getcon('UNDEF'))
140    o pkg/mnc: prepare mnc for the actual use of missing values with the
141      diagnostics package: small fix in mnc_cw_readwrite.template and more
142      initialisation of never used fields
143      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
144      versions
145    o pkg/thsice/thsice_ini_vars.F added default initial values so that
146      thermodynamics sea ice solver does not blow up when some initial fields
147      are missing.
148    o move from external_forcing_surf.F to ini_forcing.F
149      the p-coord. hack consisting in using pLoad to set phi0surf ;
150      update output of tutorial_global_oce_in_p (affected @ truncation level).
151    o Freshen up a bit hs94.1x64x5, notably:
152      remove rotationPeriod and tRef=5*0. (adjoint only), and add
153      exactConserv=.TRUE.
154    o pkg/generic_advdiff:
155      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
156      applies to files where Temperature & Salinity 2nd Order moments are used.
157    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
158      this uses a dynamically allocated internal state data structure
159      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
160      and requires a fortran 90 compiler
161    
162    checkpoint59q
163    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
164       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
165    o Refresh tutorial_global_oce_biogeo, notably:
166      - change bathymetry (put back seamounts in ACC, use hFacs)
167      - change EOS (POLY3 --> JMD95Z)
168      - use Bryan-Lewis vertical diffusivity
169      - use multidimensional advection
170      - remove old virtual virtual in dic pkg, now done through ptracer pkg
171      - change a couple of parameters in dic pkg
172    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
173    o pkg/obcs: change default to OBCSfixTopo = .true.,
174      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
175      - replace "debugMode" with "debugLevel .GE. debLevB"
176    o implementation of TAF directives for gchem,cfc,dic
177    o remove "exp5" (replaced by tutorial_deep_convection).
178    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
179      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
180      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
181      --> changes results in exp4, seaice_obcs
182    o tutorial_deep_convection :
183      update the set-up and increase resolution and domain size ; start
184      from pseudo initial conditions = output at t=120mn in order to see
185      something happening when running testreport.
186    o pkg/seaice: add os7mp as an advection scheme
187                  add check for advection schemes
188                  add a flag for restoring T and S underneath sea ice
189    o pkg/my82: add netcdf-support and diagnostics
190    o thsice pkg:
191      - Now hsMax limits snow height by turning it into ice following
192        flooding scheme (and now conserving energy)
193      - Slight rewriting of the formula in thsice_calc_thick.F
194      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
195      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
196    
197    checkpoint59p
198    o gchem / dic / cfc :
199      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
200      - add new parameter files: "data.dic" & "data.cfc" ;
201      - various re-arrangement in initialisation & header file ;
202      - fix tutorial_global_oce_biogeo for multi-threaded test.
203    o pkg/dic: test for "pickup_dic" file when restarting ;
204      if no pickup-file, can restart with a re-initialised pH (same as it did
205      before) providing pickupStrictlyMatch is set to False.
206    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
207      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
208    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
209      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
210    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
211     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
212       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
213    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
214       scheme to use for vorticty-term ;
215     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
216       (with default selectVortScheme, return to original discretisation)
217     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
218    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
219    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
220      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
221      also fix diagnostics VISCAHW & VISCA4W.
222    
223    checkpoint59o
224    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
225    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
226      move a few statemens out the main loop into separate loops
227    o pkg/shelfice:
228      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
229        (kg/m^2/s), does not break tests, because in verification/isomip,
230        rhoConstFresh=rhoConst (by accident)
231      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
232      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
233        new file model/src/seawater.F, so that they are available for all pkgs.
234      - convert potential temperature into in-situ temperature. This changes the
235        isomip tests => update tests
236    o add a flag writePickupAtEnd (default=true) to be able to suppress
237      writing a pickup at the last timestep
238    o tools/mpack-1.6 :
239      - disable automake (not working) and autoconf (not needed).
240      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
241        also cleaner with much less compilation warnings.
242    o pkg/profiles:
243      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
244      (for "less than 32 characters name" compiler requirement)
245    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
246      conditions that have a different sampling frequency than S/T/U/V obcs
247    o pkg/diagnostics (stats-diags):
248      - fix global Min/Max in case 1 processor get only empty tiles
249    o genmake2: replace (4 times)
250         make genmake_tc_1.o >> genmake_warnings 2>&1
251      with
252         COMM="$CC $CFLAGS -c genmake_tc_1.c"
253         echo $COMM >> genmake_warnings
254         $COMM >> genmake_warnings 2>&1
255      to make genmake2 always see the value of CC as specified in the optfile.
256    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
257      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
258      - modify verification advect_cs test to test SOM-advection on CS-grid.
259    o pkg/ctrl:
260      - Rewrite of ctrl_map_ini_ecco.F,
261        introducing a generic routine (ctrl_map_ini_gen.F).
262      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
263    
264    checkpoint59n
265    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
266      number in dedicate array "hdiag":
267      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
268        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
269      - many small changes (integer format) for large number of diagnostics
270      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
271        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
272    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
273      usingSphericalGrid, this allows to define the rotated grid coordinates
274      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
275      geographical coordinates according to the inverse of the rotation defined
276      by the Euler angles, so that Coriolis parameter and online-interpolation by
277      exf works with the geographical coordinates on XC/YC/XG/YG.
278      Naturally, this feature does not work with all packages, so some
279      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
280      profiles), because there the coordinates are assumed to be regular
281      spherical grid coordinates.
282    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
283      - introduce isopycnal diffusion coefficient control.
284    o tools/adjoint_options:
285      - additional control vector components.
286    o pkg/mnc: have mnc create marginally meaning full coordinate variables
287      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
288    o pkg/mypackage:
289      - add example of read/write pickup for state-var ;
290      - add entry points to the main code for state-vars diags & write-pickup.
291    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
292      transitions for useExfYearlyFields
293      - add new subroutine that determines the file to read from for
294        use*YearlyFields = .TRUE. and .FALSE.
295      - add a verification experiment to global_with_exf that tests
296        useExfYearlyFields with USE_EXF_INTERPOLATION defined
297    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
298      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
299      subroutines (which could be generated from a template, because they are
300      almost identical), for now they are included in obcs_prescribe_read.F for
301      simplicity
302    o pkg/exf:
303      - add a little more diagnostic to exf_interp_read (in analogy to
304        mds_read_field, can be turned off with debugLevel < debugLevA=1)
305      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
306        ugly but fast by unrolling short inner loops, inserting a unroll=8
307        directive in routine lagran, and splitting a loop and making do while the
308        outermost loop (the latter requires the intoduction of index arrays)
309    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
310    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
311      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
312    o verification/seaice_obcs: updated for restart test and latest options
313    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
314      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
315      for now this is only available for the C-grid code and also within
316      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
317    
318    checkpoint59m
319    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
320      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
321    o gad_som : fix flux output (& diagnostics) to have same units as other  
322      advection scheme fluxes (was previously multiplied by deltaT).  
323    o added verification/seaice_obcs both to test seaice open boundaries
324      and to provide an example matlab scrpt for generating them
325    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
326    o pkg/salt_plume: clean up salt_plume_frac.F to
327      remove redundancy in PlumeMethod 1 and 4
328    o pkg/kpp: added saltplume diagnostics
329    o pkg/obcs and pkg/seaice:
330      - do not set uice and vice to zero when OB*icefile are unspecified
331      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
332      - moved seaice tracer obcs after call to seaice_growth
333    o pkg/salt_plume: added various options for salt plume depth
334      criterion and for vertical distribution of the salt
335    
336    checkpoint59l
337    o pkg/ptracers: new version of ptracers pickup:
338      read meta file and write only fields which are needed to restart.
339      ( same logic as main pickup file ; also using pickupStrictlyMatch )
340    o pkg/seaice:
341      - add timescale for melting due to warm mixed layer as a means of
342        setting SEAICE_availHeatFrac more conveniently
343      - add a CPP-flag/runtime parameter check for flooding algorithm
344      - reformulated availHeat in seaice_growth.F to be independent of AREA
345    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
346      unit changes
347    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
348    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
349      SX vector computer.
350    o pkg/seaice:
351      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
352        seaice forcing fields can now be read only through pkg/exf
353      - removed some unused halos
354    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
355    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
356      or U/VICE from U/VWIND before computing U/VSTRESS
357    
358    checkpoint59k
359    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
360      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
361    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
362      all experiments pass when compile with un-initialised var. checking option.
363    o added pkg/salt_plume
364    o script to test restart (for now, in MITgcm_contrib/jmc_script)
365    o pkg/seaice: new read/write pickup version.
366      read meta file and write only fields which are needed to restart.
367      ( same logic as main pickup file ; also using pickupStrictlyMatch )
368    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
369    o lab_sea.hb87: modify the domain & update output.hb87.txt :
370      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
371      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
372      process. Fixed here by closing the domain at the Northern boundary.
373    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
374    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
375      a set of consecutive levels in/from a 3-D array.
376    o pkg/ptracers:
377      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
378      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
379    
380    checkpoint59j
381    o in pkgs: dic, obcs, offline, rbcs:
382      standard way to compute coeff. for time interpolation between 2 time reccords
383      which retains full precision (& make results less dependent on compiler).
384      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
385  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
386    packages instead of reading ice cover and wind speed separately    packages instead of reading ice cover and wind speed separately
387  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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