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revision 1.1794 by jmc, Thu Dec 27 20:09:11 2012 UTC revision 1.1864 by jmc, Mon May 6 18:04:38 2013 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 (ITD code):
8      - simplify and fix the writing of pickup-files for ITD case
9    o pkg/seaice (ITD code):
10      - introduce floe size dependent lateral melt for ITD case;
11      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
12      - update seaice_itd experiment main output.
13    o pkg/thsice:
14      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
15        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
16        changed accordingly pkg/atm2d.
17    
18    checkpoint64g (2013/05/01)
19    o pkg/exf ALLOW_RUNOFTEMP
20      - if defined,  river and glacier runoff temperature can be read-in from
21        runoftempfile; runoftempfile needs to have same format as runofffile
22    o pkg/thsice (& pkg/bulk_force):
23      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
24        for energy content of Precip + RunOff & Evap (like with pkg/exf).
25      - change computation domain to always be the interior (without overlap).
26      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
27    o verification/tutorial_global_oce_biogeo:
28      - add preliminary OpenAD setup (still has problems)
29    o pkg/seaice:
30      - turn some parameters for choosing the convergence criterion of
31        the inexact Newton method (JFNK) into runtime parameters for convenience
32      - clean up seaice_calc_viscosities.F: remove/retire two options for
33        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
34        the results of lab_sea/input because a division has been replaced by
35        a multiplication with the reciprocal (sumNorm)
36      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
37        convergence of solver (changes results, of course), and to test some
38        new features
39    o model/src:
40      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
41      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
42      - move forcing adjustment (balancing surface forcing) in specific S/R
43        where might also be applied exchanges (if needed) to forcing arrays.
44    o pkg/shelfice:
45      - allow to specify the Ice-Shelf mass per unit area (instead of
46        shelficeLoadAnomaly) and do the conversion from one to the other
47      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
48        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
49        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
50        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
51      - update isomip experiment forward output (get machine truncation error
52        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
53    o verification/offline_exf_seaice:
54      revise data.seaice in input.thermo and input_ad and update results accordingly
55        HO = 0.2, SEAICE_areaLossFormula = 2,
56        SEAICE_growMeltByConv = .TRUE.,
57        SEAICE_doOpenWaterMelt = .TRUE.,
58      Improve consistency with input.thsice and fix the spurious 500m ice corners
59    o verification/global_ocean.cs32x15:
60      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
61        in icedyn (thsice+seaice-dyn) test and update output.
62    o verification/offline_exf_seaice:
63      - adjust list of tested variables (with testreport) and update
64        standard test output with better slection of monitored fields.
65    o pkg/cd_code:
66      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
67        experiment lab_sea.hb87
68    o tools/genmake2:
69      - change default makedepend from the system default to tools/xmakedepend:
70        When no makedepend is specified, select tools/xmakedepend it the test pass,
71        otherwise select the system default (if exist and pass the test) or
72        try to build cyrus-makedepend ; stop if none of the 3 works.
73    o pkg/exf & pkg/thsice:
74      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
75        for energy content of Precip + RunOff & Evap. Assumes:
76       1) Rain has same temp as Air.
77       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
78       3) Run-Off comes at the temp of surface water (with same Cp)
79       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
80        put directly into Latent Heat flux & should use water-vapor heat capacity.
81       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
82        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
83    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
84        (compile when SEAICE_ALLOW_JFNK is defined)
85    o pkg/thsice:
86      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
87        implementation): move THSICE_AVE call after the advection (called directly
88        from thsice_do_advect.F).
89    o verification/global_ocean.90x40x15 and OpenAD:
90      New experiment for OpenAD is identical to the one in input_ad except that
91        multiDimAdvection=.FALSE.,
92      There is still an issue with this.
93    o pkg/thsice:
94      - account for ice velocity (ocean relative velocity) in turbulent heat flux
95        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
96        and offline_exf_seaice (main test).
97    
98    checkpoint64f (2013/03/31)
99    o verification/OpenAD:
100      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
101    o verification/isomip, pkg/shelfice and OpenAD:
102      - add OpenAD setup to this exp and make shelfice package work with OpenAD
103    o verification/tutorial_global_oce_biogeo:
104      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
105    o verification/offline_exf_seaice:
106      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
107    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
108      - add OpenAD setup to this exp and make ptracers package work with OpenAD
109    o pkg/seaice/seaice_evp.F:
110       mask the asymmetric contribution of the ice-ocean stress (when
111       the turningAngle is non-zero) over open water to avoid stripes
112       in the EVP-solutions after many EVP-substeps. This does not change
113       the verification experiment (because turningAngle=0 in that experiment),
114       but will affect other EVP solutions with turningAngle.ne.0
115    o verification, AD & TLM output:
116      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
117        additions and multiplications which affect results at machine truncation
118        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
119        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
120        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
121        digits of matching.
122    o pkg/seaice:
123       modify lsr-algorithm so that it vectorizes AND converges by using a
124       "zebra" method: split vector loop into two with step size 2; this
125       solves a general convergence problem for the JFNK solver on a vector
126       computer. It has the potential to even improve convergence for
127       non-vector machines, but it does change the results so it is turned
128       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
129       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
130    
131    checkpoint64e (2013/03/05)
132    o pkg/ecco and several verification experiments:
133       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
134       from ecco package, and revert to unified routine in model/src/
135       Adjust verification experiments accordingly, especially gloal_oce_llc90
136       Should conclude long-standing work by Gael to reconsile the_main_loop with
137       ECCO and will enable OpenAD's revolve loop in ECCO setup.
138    o pkg/generic_advdiff:
139      - implement compressible flow method for multi-dim advection (similar to
140        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
141        TAF generates many recomputations) to use it; no yet coded with implicit
142        vertical advection.
143      - change experiment advect_cs (new output) and advect_xy (same output)
144        to test compressible flow multi-dim advection.
145    o pkg/generic_advdiff:
146      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
147        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
148    o pkg/seaice:
149      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
150        bug affects two verification experiments (lab_sea and lab_sea.hb87),
151        recover old (wrong) results by setting noSlipFac = 2. in
152        seaice_calc_strainrates.F;
153      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
154      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
155        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
156      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
157    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
158      - new subroutines seaice_lsr_tridiagu/v
159      - introduce loop bounds i/jmin/max to be able to use a restricted
160        additive Schwarz method, but not used for now.
161      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
162      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
163    o OpenAD support
164       Reorganize S/R call for overall time-stepping loop to facilitate
165       OpenAD revolve loop replacement
166       (new S/R main_do_loop.F)
167    o model/src:
168      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
169      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
170        ADAMS_BASHFORTH2.
171    o pkg/cheapaml:
172      - add new parameter (default=F, same as before) to disable full domain
173        (including land) periodicity in X & Y dir.
174      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
175        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
176        into single S/R CHEAPAML_TIMESTEP.
177    
178    checkpoint64d (2013/02/17)
179    o pkg/monitor (angular momentum):
180      - do not add Eta contribution to the total AM if using rigid-lid;
181      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
182      - horizontal discretisation: compute Zonal wind contribution separately for
183        each component (instead of from cell centered averaged) and use the 4
184        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
185      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
186        FreeSurf) if using vectorInvariant momentum.
187    o model/src (horizontal grid):
188      - move initialisation of all horizontal grid arrays to null value
189        from specific horizontal grid S/R to main S/R INI_GRID;
190      - add 2 new arrays to project model C-grid velocity on to zonal direction
191        (similar to AngleCosC & -AngleSinC but at U and V point location) and
192        compute them in S/R CALC_GRID_ANGLES.
193    o pkg/seaice: replace a hard coded parameter by a runtime parameter
194        SEAICE_JFNK_tolIter
195    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
196        preconditioner for JFNK (run LSR into the overlaps as far as possible,
197        i.e OLx/y-2, but overwrite the solution in the overlaps)
198      - extend loop range in seaice_calc_viscosity
199      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
200      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
201      - slightly modify loops in tridiagonal solver lsr-preconditioner
202      - by default remove the extra exchange in seaice_preconditioner with a
203        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
204      - modify offline_exf_seaice so that old results without RAS are reproduced
205        for output.dyn_jfnk.txt
206      in seaice_fgmres.F (unrelated to RAS)
207      - add a cpp-flag option for a re-ordered mapping (potentially more
208        efficient), but because this changes the results, turn it off by
209        default
210      - replace the save statement by local common blocks
211    o utils/matlab:
212      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
213      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
214        instead of local script "load_cs.m".
215    o pkg/seaice:
216      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
217        to the scalarProductMetric and the unrolling. By chance this does not
218        change the verification experiment, because of the particular domain
219        decomposition
220    o pkg/diagnostics:
221      - change default missing_value from UNSET_RL to -999.
222    o pkg/layers: improve vectorization of layers_fluxcalc.F
223      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
224        time spent in this routine by more than a factor of 3 on an NEC-SX8
225      - step 2: replace search algorithm by a bisection algorithm found in
226        Press et al. Numerical Recipes in Fortran. This algorithm can be
227        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
228        For now, use this algorithm only for TARGET_NEC_SX defined.
229      - moved the search algorithm into a separate subroutine, that is kept
230        within the same file for automatic inlining.
231      - modified catching potential errors
232    o pkg/ecco:
233      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
234    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
235      - modifications for ALLOW_GENTIM2D_CONTROL
236      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
237      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
238      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
239      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
240    o model/src:
241      - account for moist thermodynamics in (dry) potential temperature equation;
242        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
243        and cpl_aim+ocn.
244      - also switch to standard compiler (gfortran, was using ifort previously)
245        for fizhi-cs experiments reference output.
246    o pkg/ctrl:
247      - 1st step toward generic time-varying control variable (2D) via CPP option
248        ALLOW_GENTIM2D_CONTROL
249      - note new namelist ctrl_nml_genarr in data.ctrl
250    o verification/global_ocean.cs32x15:
251      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
252        thsice calling sequence and update "output.icedyn.txt" output file.
253    o pkg/ptracers:
254      - from Ryan A.: code to allow to restart a tracer at regular time interval
255        specifying a reset frequency and a reset-phase (for each tracers).
256    o pkg/thsice:
257      - implement new sequence of calls for thsice+seaice:
258          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
259          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
260      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
261        in CPP_OPTIONS.h) to recover old sequence;
262      - update diagnostics for Intermediate State thsice diagnostics: now filled
263        just before advection (instead of just after advection in old sequence);
264      - update output of experiment offline_exf_seaice (standard test);
265      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
266        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
267    o pkg/aim_v23:
268      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
269      - use standard pkg/mdsio routines to read & write CO2 pickup file;
270      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
271      - Implement new sequence of calls for seaice advection (with thsice and
272        seaice diffusion): do ice advection after ice-Thermodynamic (previously
273        was done before); change aim_do_physics.F (split the bi,bj loops block);
274      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
275    o pkg/thsice:
276      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
277        where just seaice diffusion is used without seaice-dynamics.
278    
279    checkpoint64c (2013/01/18)
280    o pkg/seaice:
281      - add a parameter JFNKres_tFac that can replace JFNKres_t
282        (= JFNKres_tFac*JFNKresidual before JFNK solver)
283      - add a line search option to the JFNK solver
284      - move update of u/vIce and computation of initial residual into a separate
285        routine (same file); makes the code a little easier to read (?)
286      - the line search requires computation of the residual and for some reason
287        I cannot do the update of u/vIce at the beginning of the Newton loop
288        without changing the results, so we move computation of the new residual
289        also to the end of the Newton loop, even without the line search
290    o pkg/mdsio:
291      - write missing value (corresponding to undefined array value) to meta files;
292        skip this if missing value is one (UNSET_RL would be a better value for the
293        case of undefined missing value but it's current the default missing-value);
294        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
295    o pkg/exf & thsice:
296      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
297        diagnostics) even when SHORTWAVE_HEATING is #undef;
298    o verification/cfc_example:
299      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
300        illustrate how to use it).
301    o verification/offline_exf_seaice:
302      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
303        files to only one time-record.
304      in input.thermo: narrow the 2 bands of low initial ice-concentration near
305        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
306        snapshot output; same mcPheePiston value as in thsice with
307        surf-current=0.2m/s.
308      in input.thsice: similar set-up as in input.thermo (channel with same seaice
309        initial conditions).
310    o verification/cfc_example:
311      - update file "data" with more standard choice (default rotationPeriod,
312        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
313        set deltaTFreeSurf to deltaTtracer) and update the output.
314    o pkg/layers:
315      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
316      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
317    o verification/offline_exf_seaice:
318      - set all {field}period to zero for constant-in-time forcing (not tested
319        anywhere else).
320    o verification/offline_exf_seaice:
321      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
322      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
323    o model/src:
324      - implement Finite-Volume method for (hydrostatic) presure gradient
325        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
326    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
327      - In order to be compatible with the default EVP code, this requires changing
328        the EVP code around a little; and because any small change immediately
329        breaks the lab_sea.hb87 verification experiment, the reference output is
330        updated two times (each time the remaining aggrement was only 2 digits):
331        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
332        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
333        The adjoint test lab_sea.evp also needed to be updated.
334      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
335        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
336        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
337        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
338        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
339        kept obscure, because I need to test it a little more.
340    o pkg/cheapaml:
341      - fix few incorrect type (_RL/_RS) in subroutine calls.
342    o pkg/seaice:
343      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
344        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
345    o model/src:
346      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
347        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
348        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
349    o pkg/cheapaml:
350      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
351        update output of experiment cheapAML_box.
352      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
353        and set them only in one place (cheapaml_readparms.F).
354      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
355      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
356        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
357    o model/src/the_main_loop.F:
358      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
359    o pkg/seaice:
360      - remove legacy branch code.
361      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
362    o verification/*/code*/SEAICE_OPTIONS.h:
363      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
364        SEAICE_CAP_HEFF).
365  o pkg/cheapaml:  o pkg/cheapaml:
366    - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time    - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
367      to load new forcing fields.      to load new forcing fields.

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