RC.data :: vertical coordinate of center of cell (m) RF.data :: vertical coordinate of face of cell (m) DRC.data :: Cell center separation along Z axis (m) DRF.data :: Cell face separation along Z axis (m) RhoRef.data :: vertical profile of reference density PHrefC.data :: reference potential density at cell centers PHrefF.data :: reference potential density at cell faces XC.data :: longitude East of center of grid cell XG.data :: longitude East of southwest corner of grid cell YC.data :: latitude North of center of grid cell YG.data :: latitude North of southwest corner of grid cell DXC.data :: Cell center separation in X across western cell wall (m) DXG.data :: Cell face separation in X along southern cell wall (m) DXF.data :: Cell face separation in X thru cell center (m) DXV.data :: V-point separation in X across south-west corner of cell (m) DYC.data :: Cell center separation in Y across southern cell wall (m) DYG.data :: Cell face separation in Y along western cell wall (m) DYF.data :: Cell face separation in Y thru cell center (m) DYU.data :: U-point separation in Y across south-west corner of cell (m) Depth.data :: Model bathymetry (m) AngleCS.data :: cosine(alpha) relative to geographic direction at grid cell center AngleSN.data :: sine(alpha) relative to geographic direction at grid cell center alpha = angle of model uVel direction vs geographical East = angle of model vVel direction vs geographical North (AngleCS*uVelc - AngleSN*vVelc, AngleSN*uVelc + AngleCN*vVelc) rotates model velocity to geographical coordinates, where (uVelc,vVelc) is model velocity vector at center of grid cell U2zonDir.data:: cosine of grid orientation angle at U point location V2zonDir.data:: minus sine of orientation angle at V point location RAC.data :: vertical face area of tracer cell (m^2) RAS.data :: vertical face area of v cell (m^2) RAW.data :: vertical face area of u cell (m^2) RAZ.data :: vertical face area of vorticity points (m^2) hFacC.data :: mask of tracer cell (0 is land, >0 is wet) hFacS.data :: mask of v cell (0 is land, >0 is wet) hFacW.data :: mask of u cell (0 is land, >0 is wet) Also look at ~dmenemen/MITgcm/model/inc/GRID.h for more details The grid is lat/lon from 70S to 57N (jx=2881:11520;) ============ Grid information can also be obtained from ~dmenemen/llc_4320/run_template/tile00[1-5].mitgrid The advantage over the output diagnostic is that: (1) they explicitly include northeast edges for each face (2) they include values for dxF, dyF, dxV, and dyU (3) there are no holes for land tiles These files are real*8 and have dimension: tile00[1-2].mitgrid (nx+1)*(3*nx+1)*16 tile003.mitgrid (nx+1)*(nx+1)*16 tile00[4-5].mitgrid (3*nx+1)*(nx+1)*16 where nx=4320; (ignore tile006.mitgrid --- it is not used) The 16 grid information fields included are: 01 xC :: X-coordinate of cell center f[X,Y] (deg) 02 yC :: Y-coordinate of center of cell f[X,Y] (deg) 03 dxF :: Cell face separation in X thru cell center (m) 04 dyF :: Cell face separation in Y thru cell center (m) 05 rA :: R-face area f[X,Y] ( m^2 ). 06 xG :: X-coordinate of corner of cell (c-grid vorticity point) (deg) 07 yG :: Y-coordinate of corner of cell (c-grid vorticity point) (deg) 08 dxV :: V-point separation in X across south-west corner of cell (m) 09 dyU :: U-point separation in Y across south-west corner of cell (m) 10 rAz :: area of c-grid vorticity cell ( m^2 ). 11 dxC :: Cell center separation in X across western cell wall (m) 12 dyC :: Cell center separation in Y across southern cell wall (m) 13 rAw :: area of c-grid Uvel cell ( m^2 ). 14 rAs :: area of c-grid Vvel cell ( m^2 ). 15 dxG :: Cell face separation in X along southern cell wall (m) 16 dyG :: Cell face separation in Y along western cell wall (m) See read_tile_mitgrid.m for an example of reading and using the tile* files. See ini_curvilinear_grid.F after lines #else /* ifndef OLD_GRID_IO */ ... #ifdef ALLOW_MDSIO for more details.