--- MITgcm/doc/tag-index	2005/07/30 00:58:40	1.525
+++ MITgcm/doc/tag-index	2005/10/12 02:13:40	1.569
@@ -1,13 +1,148 @@
-$Header: /home/ubuntu/mnt/e9_copy/MITgcm/doc/tag-index,v 1.525 2005/07/30 00:58:40 edhill Exp $
+$Header: /home/ubuntu/mnt/e9_copy/MITgcm/doc/tag-index,v 1.569 2005/10/12 02:13:40 jmc Exp $
 $Name:  $
 
     Notes on tags used in MITgcmUV
     ==============================
 
+o vorticity & strain are now computed without masking, to account for 
+  no-slip-side BC in variable viscosity calculation ; mask is applied
+  anyway later on, before computing advection/coriolis terms.
+o modify exp4 to test new obcs support reading from external files
+  and for passive tracers
+o fix behavior of ptracers_monitor when monitor output is written to a 
+  netcdf-file; still not independent of monitor.F (writes in the same
+  file).
+o change default value of tRef (put a uniform, meaningful value for ocean 
+  & atmos) and initialize sRef (was missing, as Martin mentioned).
+o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity 
+  to be proportional to enstrophy dissipation length.  Thus,
+   viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
+  This is now consistent with Smagorinsky and with the manual.
+
+checkpoint57u_post
+o OBCS and PTRACERS: add open boundary support for passive tracers
+  - either use homogenous (pseudo) v.Neumann conditions or prescribe 
+    OB-values from file; this is not different from the way theta and salinity
+    are treated
+  - however, Orlanski-radiation conditions are not supported, and the model
+    will stop if you use pTracers and Orlanski at the same time. 
+  - beefed up the rountine obcs_external_fields_load: now only those open
+    boundary values are overwritten with values from files for which there 
+    are really files, otherwise the OB-fields remain untouched. This makes
+    it possible to use different OBs at different ends of the domain (as 
+    with EXF)
+o reduce number of exch calls in shap_filt (s2). 
+o CS-grid: fix divergence contribution to Leith viscosity. Affects (@ 
+  truncation level) 4/5 MLAdjust test results (11&12 digits match).
+
+checkpoint57t_post
+o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
+o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
+  same truncation, independent of the face number: affects affects several
+  test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
+o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
+  note that biharmonic viscosity + no-slip was not tested in any experiment.
+o fix bug in non-linear free-surf side-drag ; generate new output for
+  global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
+o make mnc honor the writeBinaryPrec flag for most kinds of output
+o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
+o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
+  error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
+o add brackets in multi-terms sum to get same truncation, independent of
+  the face number (manage to get exactly same value of gU,gV at the cs-edge)
+  affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
+o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
+  and viscA4Remax, which allow one to limit the minimum viscosity by specifying
+  a maximum grid-scale Reynolds number.  Also, changes all length calculations
+  in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
+  Suggested values of viscosity parameters found in mom_calc_visc. 
+  Many new viscosity diagnostics available.
+
+checkpoint57s_post
+o Add clearing-house for viscosity calculations, mom_calc_visc and 
+  correct numerous bugs in LeithD and Smagorinsky discretizations.  
+  mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be 
+  used simultaneously, and to be used in mom_vecinv and mom_fluxform. 
+  Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
+  and with Strain-Tension viscous term calculation (mom_hdissip.F).  
+  The Strain-Tension form is now called with useStrainTensonVisc=.true.
+  ViscAhStrain and viscAhTension are now retired.
+o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
+o In response to JMC's bug report, genmake2 now ignores any soft-links
+  that it finds in the *current* directory when searching for files.
+  Soft-links found in any other source directories will still work as
+  they did before.
+o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls 
+  a C routine to unlimit the stack size
+o mnc-ify pkg/aim snapshot vars
+o mnc-ify pkg/land as requested by Daniel
+o various changes to mnc including:
+  - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
+  - output can now be grouped so that all files within a group 
+      change the ITER portion of their names in lock-step together
+  - can now read ("global") PER-FACE (in addition to PER-TILE) files
+      and works with both EXCH1 and EXCH2 (but needs more testing)
+  - writing works for all verification test cases w/ g77 on Linux
+
+checkpoint57r_post
+o make MNC variable initialization happen earlier
+o add diagnostics for (almost) each term of the momentum Eq.
+o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
+o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
+o remove MINIMAL_TAVE_OUTPUT option ; 
+  add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
+o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
+  allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
+o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
+o add time-dependent SST, SSS control
+o cost terms in ecco/ modularized (new cost_generic.F)
+o cost_averages routines are modularized (new cost_averagesgeneric.F)
+o new infrastructure for seaice model vs. obs misfits in seaice/
+  * driver from the_main_loop.F is seaice_cost_driver.F
+  * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
+  * gradient check in Exp. 6a of natl_box_adjoint/
+o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
+  (see README file)
+
+checkpoint57q_post
+o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
+o fix annoying months-old bug in mnc/mdsio output for seaice pkg
+  - bug was reported by Jean-Michel and Ian Fenty
+o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
+  update exp. cpl_aim+ocn output. 
+o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
+  Needed for high-res. runs with large global files 
+  to be able to limit tapelev size
+o Changed some tests for adjoint:
+  * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
+  * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
+  * global_ocean.90x40x15/ back to default 3-level checkpointing
+o Modifications to enable scripted COMMON to MODULE conversion
+  * verification/OpenAD/code/ has necessary scripts and description;
+  * converts, compiles and runs successfully;
+
+checkpoint57p_post
+o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
+o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
+  (already the case for some pkgs, including recent MNC_init, e.g. thsice)
+o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
+o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
+  (was already the case for dissipation with mom_vecinv,
+   and also the case for grad.PhiHyd when staggered-timeStep)
+  This will allow to put dissipation out-off the AB time-stepping.
+ Unfortunately, affects truncation error. Update output of exp. that "fails"
+  (cg2d matching number) and leave the others for later: front_relax(10),
+  global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
+  matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
+
+checkpoint57o_post
 o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and 
   (2) its ready to be documented during the 20050801 DocFest
 o MNC-ify the gmredi package -- tested and works w/ and w/o mnc 
   for ideal_2D_oce and lab_sea on linux_ia32_g77
+o set to #undef CTRL_SET_OLD_MAXCVARS_30
+  in global1x1_tot/code_seaice_adj to access indices 32, 33
+  (worth another tag)
 
 checkpoint57n_post
 o adding precip control xx_precip 32