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revision 1.1026 by dfer, Mon Sep 29 14:05:54 2008 UTC revision 1.1080 by mlosch, Thu Mar 19 11:45:36 2009 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:
8      Major overhaul of the LSOR solver: change discretization from original
9      finite differences to finite volume. The old routine is still in the
10      file seaice_lsr.F and can be turned on with the CPP-flag
11      SEAICE_OLD_AND_BAD_DISCRETIZATION
12      Along with this change, the discretization of the strain rates is changed.
13      The same flag turns on the old discretization in seaice_calc_strainrates.F
14      All verification experiments with seaice are affected (except for
15      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
16      results by setting the above flag.
17      Further changes involve changes in defaults:
18      - ALLOW_FLOODING is defined and turned on by default
19      - SEAICE_advSnow = .true. is now the default
20      - SEAICE_advSalt = .true. is now the default
21      - SEAICE_advAge  = .true. is now the default
22      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
23        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
24      - seaice_growth: replace computation of UG by a simple copy from wspeed
25    
26    checkpoint61k
27    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
28      seaice_lsr: fixed a few metric terms,
29                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
30                  add more debugging diagnostics
31      seaice_evp: removed superfluous many metric terms of FV discretization
32                  of stress divergence
33                  affects lab_sea, lab_sea.hb87
34      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
35                  of stress divergence for non-evp solver
36                  (this part is not tested anywhere)
37      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
38                  they were effectively only half slip
39                  affects lab_sea.hb87
40      updated all relevant verification experiments
41    
42    checkpoint61j
43    o pkg/seaice: turn a few hard wired parameters into run time parameters
44    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
45      time in seconds as promised by the usints in seaice_monitor and exf_monitor
46    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
47      that are not cubed-sphere grids
48    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
49    o pkg/ctrl:
50      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
51    o non-hydrostatic (calc_gw.F):
52      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
53      update output of exp. global_ocean.cs32x15.viscA4
54    o remove backward compatibility for thetaMin,phiMin
55      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
56    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
57      interpolated wind field not only for curvilineargrid=.true., but also
58      for a rotated grid (rotateGrid=.true.)
59    o pkg/exf: add capability to bypass interpolation for runoff
60      by setting yet another CPP-flag
61    o eesupp/src, B-grid exchange:
62      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
63    o autodiff
64      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
65      allows to switch to single-prec common blocks;
66      corresponding switch occurs in tamc.h, integer isbyte
67      TAF store directivs "byte" and "kind" seem equivalent;
68      Most tamc.h have been updated correspondingly.
69    
70    checkpoint61i
71    o autodiff:
72      fix autodiff_sore/_restore indices for obcs
73      (spotted by I. Hoteit, M. Mazloff)
74    o pkg/autodiff, pkg/ctrl:
75      Add flag to reduce all tapelev I/O to single-prec.
76      In data.ctrl set
77        doSinglePrecTapelev = .TRUE.
78    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
79      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
80    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
81      real fresh water flux (not yet)
82    o pkg/mdsio & rw:
83     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
84     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
85    o pkg/flt:
86     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
87       init_fixed & ini_varia.
88     - clean-up & simplify linear interpolation S/R:
89       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
90     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
91     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
92     - add vert. coordinate & horiz. indices to output files.
93     - change vertical position in initial condition, from index to depth [m].
94     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
95       (easier to get to a curvilinear grid) ; delX,delY no longer used.
96    o pkg/ggl90: a few modifications:
97     - fix bottom boundary condition, and interpolation of KappaE
98       near top and bottom
99     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
100     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
101     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
102    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
103      (maintain temporary backward compatibility, until next checkpoint)
104    
105    checkpoint61h
106    o pkg/diagnostics with "periodic averaging diagnostics":
107      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
108    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
109    o pkg/obcs: fix loop ranges for balancing code
110    o pkg/flt:
111     - improve criteria for finding which tile owns a float.
112     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
113    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
114      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
115      with ocean biogeo)
116    o pkg/flt:
117     - do some cleaning and fix the restart ;
118     - add output.txt in flt_example/results to get this pkg tested.
119    o genmake2: add an EXTENDED_SRC option and flag.
120       for now, cannot be turned on on command line (only through genmake_local)
121    o pkg/mdsio: read/write vector:
122     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
123     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
124       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
125     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
126      (drop to 4 digits matching for grad). But this test does not look very
127      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
128    
129    checkpoint61g
130    o pkg/flt:
131      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
132       + make OPTIONS file more standard.
133      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
134      - fix _BYTESWAPIO CPP-Flag
135      - standard reading of file-parameter "data.flt"
136      - fix argument list of S/R FLT_RESTART
137      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
138    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
139    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
140      a still unfixed compiler/optimization bug
141    
142    checkpoint61f
143    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
144      update results of global_ocean.cs32x15.icedyn test.
145    o move getcon.F from model/src to pkg/fizhi.
146    o pkg/exf: add parameter for extrapolation of temp up to the surface
147       and option to prevent negative evap (in bulk_largeyeager04 only).
148    o Prather Advection scheme: fix tracer conservation for divergent flow
149      (e.g., when using NonLin Free-Surface).
150    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
151    o gmredi (Visbeck-variable-K):
152     - add more parameters to Visbeck-variable-K.
153     - use a 5 points average for dSigmaR in Visbeck-K calculation
154       (more "homogenous": same stencil and same weights as in dSigmaH)
155     - update output of ideal_2D_oce experiment.
156    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
157      (#undef REAL4_IS_SLOW)
158     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
159       coordinate variable
160     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
161       (surface forcing fields), removes some of the functionality
162     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
163     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
164       probably not all: copy _RS surface flux fields to RL field before
165       calling DIAGNOSTICS_FILL
166     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
167       real*4 (CALL EXCH_*_RS) versions.
168     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
169       (generate new output).
170    
171    checkpoint61e
172    o gmredi (Visbeck-variable-K):
173      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
174      - change computation of Visbeck-K where Slope > Smax :        
175        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
176        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
177    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
178      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
179    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
180    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
181      does not become too large (to avoid precision problems in implicit-diffusion
182      solver); update ideal_2D_oce output.
183    o pkg ggl90:
184      - in ggl90_cal.F: compute only one set of visc/diff, used to
185        step forward TKE/T/S/momentum
186      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
187        have Prandlt =1)
188    o gmredi (fm07):
189      - add lower limit on Transition layer thickness + lower limit on 1/lambda
190      - allow to set few more params from data.gmredi
191  o pkg ggl90:  o pkg ggl90:
192        - add missing sqrt(2) factor in computation of mixing length        - add missing sqrt(2) factor in computation of mixing length
193          scale in ggl90_calc.F          scale in ggl90_calc.F
# Line 2238  o add two new packages Line 2422  o add two new packages
2422    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2423    - these scheme operate in a similar manner as KPP (without ghat, of    - these scheme operate in a similar manner as KPP (without ghat, of
2424      course), however there is only one diffusivity that is used for both      course), however there is only one diffusivity that is used for both
2425      temperature and salinity (and passive tracers)ç      temperature and salinity (and passive tracers)
2426  o add offline package  o add offline package
2427  o add "verification/dic_example" which contains a dic-gchem-ptracer setup  o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2428    provided by Stephanie Dutkiewicz    provided by Stephanie Dutkiewicz

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