--- MITgcm/doc/tag-index	2001/02/20 22:24:48	1.36
+++ MITgcm/doc/tag-index	2001/07/13 20:20:12	1.42
@@ -1,10 +1,59 @@
-$Header: /home/ubuntu/mnt/e9_copy/MITgcm/doc/tag-index,v 1.36 2001/02/20 22:24:48 jmc Exp $
+$Header: /home/ubuntu/mnt/e9_copy/MITgcm/doc/tag-index,v 1.42 2001/07/13 20:20:12 heimbach Exp $
 
     Notes on tags used in MITgcmUV
     ==============================
+checkpoint40pre3
+o created calc_gtr1.F for gad package
+o split the_main_loop and re-introduced forward_step
+o some recomputations of nIter0 for TAMC
+
+checkpoint40pre2
+o Updated to latest branch of AJA, JMC
+o Added gradient check package
+o Added routines for passive tracer handling
+o Added carbon sequestration sensitivity experiment
+
+checkpoint39
+ o Modifications and fixes to support TAMC
+   (mainly missing or wrong directives)
+ o Corrected common blocks when fooling TAMC to produce adjoint I/O
+   in addummy_in_stepping
+ o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
+ o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
+ o Included following packages:
+   cal: calendar
+   exf: external forcing
+   ecco: essential routines to control use of cal, exf
+         (NB: this is not the full ECCO environment)
+ o disabled some packages by default in genmake
+
+checkpoint38
+ o see notes_c37_adj.txt
+ o corrected wrong layer index in external_forcing_t
+ o replaced the_main_loop/forward_step by the_main_loop
+ o removed forceoutput from write_state
+   (replaced criteria for initial/final state)
+ o added runtime flag for pre-C35 pickups: usePickupBeforeC35
+
+checkpoint37
+ o mdsio.F routine split and packaged in pkg/mdsio
+   (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
+    used unless genmake -disable=mdsio)
+ o allow a more precise surface-geopotential gradient for the atmosphere
+   taking into account the change in space of Alpha (=1/rho) at the surface.
+ o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
+   (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
+ o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
+   Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
+   [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
+ o Time-Average diagnostics defined as a pseudo package "timeave".
+ o pickup files : old pickup (before c35) did not work with new code (c35
+   and after) unless activating 2 commented lines in initialise-varia.
+ o Non-Hydrostatic pickup file Pb fixed.
+ o bug with Rigid-lid version (since c35) fixed.  
 
 checkpoint36
- o implement Crank-Nirotropic time-stepping
+ o implement Crank-Nickelson barotropic time-stepping
  o recover Time-Average diagnostics
  o fix Pb in checkpoint (PR#19) 
  o AIM become a standard package ; clean unused CPP_kees