--- MITgcm/doc/tag-index	2008/07/29 18:42:35	1.1010
+++ MITgcm/doc/tag-index	2008/10/27 22:52:15	1.1037
@@ -1,9 +1,114 @@
-$Header: /home/ubuntu/mnt/e9_copy/MITgcm/doc/tag-index,v 1.1010 2008/07/29 18:42:35 jmc Exp $
+$Header: /home/ubuntu/mnt/e9_copy/MITgcm/doc/tag-index,v 1.1037 2008/10/27 22:52:15 jmc Exp $
 $Name:  $
 
     Notes on tags used in MITgcmUV
     ==============================
 
+o gmredi (Visbeck-variable-K):
+ - add more parameters to Visbeck-variable-K.
+ - use a 5 points average for dSigmaR in Visbeck-K calculation
+   (more "homogenous": same stencil and same weights as in dSigmaH)
+ - update output of ideal_2D_oce experiment.
+o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4 
+  (#undef REAL4_IS_SLOW)
+ - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4 
+   coordinate variable
+ - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables 
+   (surface forcing fields), removes some of the functionality
+ - model/src/write_grid.F: write _RS variables as RS-netcdf variables 
+ - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but 
+   probably not all: copy _RS surface flux fields to RL field before 
+   calling DIAGNOSTICS_FILL
+ - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into 
+   real*4 (CALL EXCH_*_RS) versions.
+ - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
+   (generate new output).
+
+checkpoint61e
+o gmredi (Visbeck-variable-K):
+  - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
+  - change computation of Visbeck-K where Slope > Smax :        
+    now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
+    previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
+o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
+  to be the same as with Z-coord. (i.e., m/s & no-units respectively).
+o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
+o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
+  does not become too large (to avoid precision problems in implicit-diffusion
+  solver); update ideal_2D_oce output.
+o pkg ggl90:
+  - in ggl90_cal.F: compute only one set of visc/diff, used to
+    step forward TKE/T/S/momentum
+  - default value of GGL90viscMax/GGL90diffMax larger and equal (to
+    have Prandlt =1)
+o gmredi (fm07):
+  - add lower limit on Transition layer thickness + lower limit on 1/lambda
+  - allow to set few more params from data.gmredi
+o pkg ggl90:
+      - add missing sqrt(2) factor in computation of mixing length 
+        scale in ggl90_calc.F
+        (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
+
+checkpoint61d
+o adjoint modifs
+  - adapt to new field rhoInSitu
+  - allow to revert from StoreDynVars2D, StoreDynVars3D
+    to individual fields
+    (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
+o store 3-D (in-situ) density in commom block (DYNVARS.h)
+ - save 1 rho computation.
+ - no longer modify T & S inland when using down_slope pkg.
+o gad_som : allow to switch to SOM advection for T & S without corresponding 
+  pickup files (using new S/R: MDS_CHECK4FILE).
+o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
+  (for useSingleCpuIO to work in multi-threaded)
+o pkg/shelfice:
+ - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
+   with SHELFICEtopoFile in data.shelfice
+ - move code for reading ice shelf topography and modifying hFacC into separate
+   subroutines of the shelfice package
+ - separate initialisation of "fixed" and "variable" variables
+ - kTopC is not (yet) replaced by kSurfC, although this is possible
+o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
+o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
+  and rename:
+  ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
+  ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
+o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
+
+checkpoint61c
+o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid" 
+  to add mass source/sink of fluid in the interior (3-D generalisation 
+  of oceanic real-fresh water flux).
+o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
+o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
+o new pkg: down_slope
+  density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
+  - presently, modify T & S inland (dwnslp_calc_rho.F).
+    can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
+  - implementation for ocean in P-coords not tested.
+  - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
+o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
+  (to facilitate conversion of oceanic pkg to p-coordinate).
+o change FIND_RHO to FIND_RHO_2D : 
+  pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
+o new pkg: cheapaml
+
+checkpoint61b
+o exch2: 
+  change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
+  - no longer depend on the order sequence (N,S,E,W).
+  - 3rd exchange no longer needed (tested with 24 tiles).
+  - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
+  - exch_UV_A-grid readily available (but not yet tested).
+  comment out 3rd exch call and remove copy of V to U at SE & NE face-corners 
+  (both are no longer needed) in exch_uv: no effect in forward run; but 
+   get truncation error differences with adjoint exch.
+o exch2: 
+ - change index-bounds storage (moved from target to local tile,
+   more intuitive this way) ; rename/remove some variables.
+ - change utils/exch2/matlab-topology-generator & code_mods accordingly.
+
 checkpoint61a
 o exch2/matlab-topology-generator: 
   fix bug in index bounds for N-S internal exchange (hard to tell if this