--- MITgcm/doc/tag-index	2009/06/10 03:59:51	1.1120
+++ MITgcm/doc/tag-index	2009/06/26 23:19:03	1.1134
@@ -1,9 +1,59 @@
-$Header: /home/ubuntu/mnt/e9_copy/MITgcm/doc/tag-index,v 1.1120 2009/06/10 03:59:51 jmc Exp $
+$Header: /home/ubuntu/mnt/e9_copy/MITgcm/doc/tag-index,v 1.1134 2009/06/26 23:19:03 jahn Exp $
 $Name:  $
 
     Notes on tags used in MITgcmUV
     ==============================
 
+o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
+  - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
+    GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
+  - verification experiment natl_box.longstep
+o build_options: ifort+mpi_aces optfile (following Constantinos advise):
+  allow different versions of ifort (8 or 9) and different versions
+   of mpi (mpich or mpich2) to be used with the same optfile.
+  requires to load a netcdf module and set MPI_INC_DIR (see comments inside
+   optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
+
+checkpoint61r
+o pkg/seaice: 
+ - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
+  1. introduce fields for time step (N-1)
+  2. do not use levels 2 and 3 anymore (but keep them)
+  3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This 
+     includes changes to pkg/thsice/thsice_get_velocity.F, 
+     model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
+     pkg/obcs/obcs_apply_uvice.F.
+ - completely remove code for leap-frog time stepping for second order
+   advection
+ - adjusted adjoint accordingly;
+   gradient checks have improved by an order of magnitude!
+ 
+checkpoint61q
+o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
+ - the boundary conditions along open boundaries are unclear, because the
+   associated masks are set to zero and are thus treated as closed when
+   applying the slip-boundary conditions.
+ - move initialisation of grid variables from seaice_init_varia to _fixed
+o adding doc/diags_changes.txt
+o model/src: 
+  do_the_model_io: rename few pkg S/R which are called from do_the_model_io, 
+   to avoid "_diags" naming if no relation to pkg/diagnostics.
+  ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF 
+   file and only call PLOT_FIELD_XYZ if debugMode=T.
+  remove few PLOT_FIELD_XY calls outside initialisation.
+  remove few unnecessary BARRIER.
+o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
+  of salt_plume package in Southern Ocean 
+o pkg/thsice: 
+ - fix hOceMxL in overlap (needed for sea-ice advection); 
+   update output of experiment global_ocean.cs32x15.icedyn.
+o pkg/seaice: 
+ - make the (placeholder-)tracer IceAge a little more meaningful
+  by avoiding ridging of age due to convergent ice flow
+ - add diagnostics for surface temperature, atmospheric and oceanic
+   heat flux, and atmospheric and oceanic ice growth
+
+checkpoint61p
 o eesupp (global_max & global_sum):
  - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
  - remove starting & endding barrier (no longer needed)