--- MITgcm/doc/tag-index	2000/11/13 16:49:41	1.31
+++ MITgcm/doc/tag-index	2001/04/10 22:35:24	1.38
@@ -1,7 +1,72 @@
-$Header: /home/ubuntu/mnt/e9_copy/MITgcm/doc/tag-index,v 1.31 2000/11/13 16:49:41 heimbach Exp $
+$Header: /home/ubuntu/mnt/e9_copy/MITgcm/doc/tag-index,v 1.38 2001/04/10 22:35:24 heimbach Exp $
 
     Notes on tags used in MITgcmUV
     ==============================
+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-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
+
+checkpoint35
+ o subtantial rewrite of dynamics.f
+ o allows staggered time-stepping
+ o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
+ o added bottom drag (linear + quadratic)
+
+checkpoint34
+ o Modified exchange routines for correct reverse simulation.
+ o Added verification output to comply with bug fix in impldiff.F
+   as of c33 (exp2, natl_box).
+ o Corrected store directives in dynamics.F
+ o Corrected array boundaries in impldiff.F
+ o Corrected array dimensions in gmredi.
+   Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
+ o Added routine GLOBAL_SUM_INT to global_sum.F
+ o Added mdsio_gl.F for ECCO purposes.
+
+checkpoint33
+ o Fixed bug in lower BC in impldiff.F
+ o Fixed confusion about units of forcing arrays in FFIELDS.h
+   namely Fu,Fv,Qnet,Qsw,EmPmR:
+   - Removed verification/natl_box/code/external_fields_scale.F
+     (did not differ from that in model/src)
+   - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
+     (see FFIELDS.h for description)
+   - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
+     kpp_calc.F and kpp_transport_t.F
+   - Removed model/src/external_fields_scale.F and calls to it
+   - verification/natl_box uses flux data with "atmospheric" sign so
+     a special version of external_fields_load.F is used to
+     change the data as it's read in. This way, the arrays
+     have the right units and signs at all times tha a user could
+     possibly use them.
+ o Corrected genmake to delete a temporary file during configuration
 
 checkpoint32
  o Scaling of forcing fields moved from external_forcing.F to