--- MITgcm_contrib/tides/README	2013/03/25 08:58:45	1.2
+++ MITgcm_contrib/tides/README	2013/03/25 21:31:29	1.3
@@ -6,21 +6,26 @@
 
 Steps  to add tide boundary conditions  to regional MITgcm 
 0) Download the Circum-Antarctic Tide (CATS) Solution (Padman et al. 2002)
-   from Earth and Space Research, http://www.esr.org.
-   Modify CAT directory in test_tide_bc.m 
+   from Earth and Space Research,   http://www.esr.org/~padman/cats2008b/ 
+   Modify CATS directory in test_tide_bc.m   
+   Download the TMD2.03 software for extracting the tidal solution from 
+   http://www.esr.org. 
+   Modifications  are needed in the original /TMD2.03/tmd_extract_HC.m in order 
+   to have the correct path of tidal solution as shown in the sample_tmd_extract_HC.m. 
 
-1) use create_bc_grid.m (test_bc_grid.m) to generate bc grid files. 
+
+1) use create_bc_grid.m (called by test_bc_grid.m) to generate bc grid files. 
    create_bc_grid.m will generate files with names like 
    bdry_grid_[snwe].mat for south, north, west, and east boundary.  
    This script needs a directory path for MITgcm domain related files, 
-   especially YC.data, XC.data, hFacC.data, AngleCS.data, AngleSN.data. 
+   specifically  YC.data, XC.data, hFacC.data, AngleCS.data, AngleSN.data. 
 
 2) use test_tide_bc.m to generate tidal bc files which calls 
-   create_tide_bc_4bdry.m 
-   or dummy tidal bc files (zero amplitde and phase) for land boundary 
-   if there is such a need. 
+   create_tide_bc_second.m 
+   or dummy tidal bc files (zero amplitude and phase, tide_bc_empty.m) 
+   for land boundary if there is such a need. 
 
-   create_tide_bc_second.m will generate tidal bounday files with names 
+   create_tide_bc_second.m will generate tidal boundary files with names 
    like OB[SNWE]{am ph}.seaice_obcs.  
    The tidal current and phase will be used in  obcs_add_tides.F.