--- MITgcm/doc/tag-index	2004/11/22 21:12:48	1.391
+++ MITgcm/doc/tag-index	2004/11/29 22:50:47	1.396
@@ -1,8 +1,36 @@
-$Header: /home/ubuntu/mnt/e9_copy/MITgcm/doc/tag-index,v 1.391 2004/11/22 21:12:48 heimbach Exp $
+$Header: /home/ubuntu/mnt/e9_copy/MITgcm/doc/tag-index,v 1.396 2004/11/29 22:50:47 mlosch Exp $
 
     Notes on tags used in MITgcmUV
     ==============================
 
+o add another verification experiment that tests both the cfc-pkg and
+  the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with 
+  reactive tendencies treated inline with regular timestepping
+o testreport previously did a lousy job of comparing small numbers, so
+  we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
+  implemented in the little c-progam tmp_cmpnum.c which is embedded in
+  testreport. 
+o ptracers_monitor: bug fix for MPI
+
+checkpoint56a_post
+o GCHEM: finish reorganizating the package
+  - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency 
+    (introduces another 3D-array for each passive tracer, but only if
+    GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
+    gchemTendency is not needed because the timestep is done separately)
+  - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
+  - GCHEM is now---more or less cleanly---separate from PTRACERS
+  - to bo done: handling of surfaceForcingPtr that is needed for KPP not
+    so clear to me how that should be done in a general way.
+o CFC: improve formatting of output in CFC_ATMOS
+o PTRACERS:
+  - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
+    that ALL experiments with ptracers enable can be checked. This makes
+    GCHEM_MONITOR obsolete.
+  - include a runtime parameter PTRACERS_monitorFreq that defaults to
+    monitorFreq
+  - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true 
+o add PTRACERS (PTR0[1-5]) to testreport output
 o exf_check_range:
   * default changed to .TRUE.
   * will check values for niter0 if debLevA, every timestep if debLevB
@@ -18,6 +46,15 @@
   - move call to GCHEM_FORCING_SEP, so that it is now called before
     the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
   - introduced a useGCHEM runtime flag and applied it everywhere. 
+  - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
+    this flag is now only visible within GCHEM-pkg routines.
+  - moved gchem_forcing_int temporarily into ptracers_forcing, this will
+    be replaced by a 3D array that is computed before thermodynamics; for 
+    this, the tracer ID iTracer had to be included into the parameter list
+    of ptracers_forcing
+  - set up forward_step to call gchem_forcing, that will replace 
+    gchem_forcing_int in ptracers_forcing
+  - cleaning up
 o small cleaning of exch2: remove files that are also in eesupp/src
 
 checkpoint56