--- MITgcm/doc/tag-index	2012/11/07 09:59:57	1.1762
+++ MITgcm/doc/tag-index	2012/11/23 15:54:18	1.1774
@@ -1,12 +1,66 @@
-$Header: /home/ubuntu/mnt/e9_copy/MITgcm/doc/tag-index,v 1.1762 2012/11/07 09:59:57 mlosch Exp $
+$Header: /home/ubuntu/mnt/e9_copy/MITgcm/doc/tag-index,v 1.1774 2012/11/23 15:54:18 mlosch Exp $
 $Name:  $
 
     Notes on tags used in MITgcmUV
     ==============================
 
+o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
+   - remove wrong parts of the rhs and the lhs (were in there
+     because I did not understand the concept of this preconditioner)
+   - add an exchange between u- and v-sweep. This increases communication
+     by a factor of two but improves the convergence of jfnk. Ideally,
+     one would like the u- and v-sweep to be independent. So far within
+     undocumented ifdefs
+   - reorganize the extra computations for printing the residuals
+o tools/genmake2:
+  - comment out the "mpif.h" include in NetCDF test programm (for MPI built)
+    since it's not necessary (and was preventing to use MNC in some cases).
+
+checkpoint64a (2012/11/16)
+o pkg/autodiff:
+  - improve pkg-internal logical parameter switch (inAd/inFwd mode) so that
+    autodiff_readparms.F no longer depends on calling order (within
+    packages_readparms.F) and no longer requires to include ${PKG}_PARMS.h):
+    rename param turnFreeDriftInAdMode to SEAICEuseFREEDRIFTswitchInAd
+    and change param SEAICEuseDYNAMICSinAdMode to SEAICEuseDYNAMICSswitchInAd.
+o pkg/obcs:
+  - adding tidal velocity forcing capability to obcs
+    for usage example, see verification/seaice_obcs/input.tides
+o pkg/seaice:
+  - turn the LSR-relaxation parameters WFAU/V into runtime parameters
+    SEAICE_LSRrelaxU/V
+  - introduce runtime parameter SEAICEetaZmethod (=0 by default)
+o pkg/aim_v23:
+  - implement heating from friction (bottom friction and stratospheric drag).
+o pkg/shap_filt:
+  - fix diagnostic "SHAP_dKE" (was 2 time smaller); implement heating from
+    dissipation but only for Shap_funct=2, active when addFrictionHeating=T.
+o model/src:
+  - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in
+    time-constant addMass field from file (addMassFile);
+  - support for heating due to friction (and Kinetic Energy dissipation):
+    add option, run-time switch and 3-D field array + support code ; each pkg
+    or S/R can add heating contribution (if there is a sink of KE); the sum is
+    accounted for as a Temperature tendency term (EXTERNAL_FORCING_T).
 o pkg/seaice:
+  - complete merge of ITD code into seaice_growth.F
+    from MITgcm_contrib/torge/itd/code/
+    no verification so far, but Torge Martin tested
+    "1-D test case and Beaufort set up;
+    deliver okay results after 1 model year."
+  - complete merge of SEAICE_SIZE.h into all relevant routines
+  - move computation of eta at Z-points into calc_viscosities
+    + introduce global field etaZ
+    + add different methods for computing etaZ, for now the old
+      method (simple averages of eta to Z-points) is hardwired
+    + replace etaMeanZ by etaZ in seaice_lsr, seaice_calc_residual,
+      seaice_preconditioner
+  - simplify computations for SEAICE_ZETA_SMOOTHREG
+  - seaice_preconditioner:
+    + replace one remaining press by pressLoc (mistake)
+    + adjust printing of residuals
   - improve I/O of diagnostics of JFNK in seaice_jfnk.F:
-    + add (SEAICE.h) and rename some counters (initiliased in 
+    + add (SEAICE.h) and rename some counters (initiliased in
       seaice_init_fixed.F)
     + add _BEGIN/END_MASTER (myThid)  around print statements
     + print total number of iterations and failures over SEAICE_monFreq
@@ -18,13 +72,13 @@
     (seaice_jfnk.F, seaice_fgmres.F)
   - seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes
     a serious convergence problem when open boundaries are involved
-o pkg/ggl90: fix computation of control volumes for the case of 
+o pkg/ggl90: fix computation of control volumes for the case of
   ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes
   up half a grid cell from C-centered to W-centered (pointed out by C. Eden)
 o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC
 o pkg/autodiff
   - Add inAdMode switch for SEAICEuseDYNAMICS:
-    SEAICEuseDYNAMICSinAdMode 
+    SEAICEuseDYNAMICSinAdMode
     (extend logic in ADAUTODIFF_INADMODE_SET)
 o pkg/seaice
   - Step 1 of merging ice-thickness distribution (ITD) code from