# Changes between Version 6 and Version 7 of WRF4G2.0/Geogrid

Ignore:
Timestamp:
Oct 7, 2015 12:02:11 PM (7 years ago)
Comment:

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### Legend:

Unmodified
 v6 * parent_id --> List of integers specifying the domain number of the nest’s parent (One per domain). ||   parent_id=1,1 ||   parent_id=1,1 * parent_grid_ratio  --> It is a list of integers specifying for each domain the nesting ratio relative to the domain's parent. ||   parent_grid_ratio=1,3 ||   parent_grid_ratio=1,3 * i_parent_start, j_parent_start --> Coordinates of the lower left corner of the nest in the domain's parent. ||   i_parent_start=1,16, j_parent_start=1,34 ||   i_parent_start=1,16, j_parent_start=1,34 * e_we -->  It represents the nest’s full west-east dimension. For nested domains, e_we must be one greater than an integer multiple of the nest's parent_grid_ratio ||   e_we=60,82 ||   e_we=60,82 * e_sn --> It represents the nest’s full south-north dimension. For nested domains, e_sn must be one greater than an integer multiple of the nest's parent_grid_ratio. ||   e_sn=81,112 ||   e_sn=81,112 * dx --> Number specifying the grid distance in the x-direction where the map scale factor is 1. It should be in meters for the 'polar', 'lambert', and 'mercator' projection, and in degrees longitude for the 'lat-lon' projection. ||   dx=0.15 ||   dx=0.15 * dy --> Number specifying the grid distance in the y-direction where the map scale factor is 1. As stated for dx, this value should be in meters for the 'polar', 'lambert', and 'mercator' projection, but for the 'lat-lon' projection, it should be in degrees latitude. ||   dy=0.15 ||   dy=0.15 * map_proj --> Name of the projections available 'lambert', 'polar', 'mercator', and 'lat-lon' ||   map_proj='lat-lon' ||   map_proj='lat-lon' * ref_x, ref_y --> Location of the latitude and longitude of reference for the domain ||   ref_x=1, ref_y=1 ||   ref_x=1, ref_y=1 * ref_lat, ref_lon --> Reference coordinates of the domain. ||   ref_lat=-8.85, ref_lon=24.1 ||   ref_lat=-8.85, ref_lon=24.1 * pole_lat -->  For the latitude-longitude projection, it represents the latitude of the North Pole with respect to the computational latitude-longitude grid in which -90.0° latitude is at the bottom of a global domain and 90.0° latitude is at the top. * pole_lon --> For the latitude-longitude projection, it represents the longitude of the North Pole with respect to the computational latitude-longitude grid in which 180.0° longitude is at the center. * stand_lon --> A real value specifying the longitude that is parallel with the y-axis in the Lambert conformal and polar stereographic projections. For the regular latitude-longitude projection, this value gives the rotation about the earth's geographic poles. * geog_data_path --> Path to the directory where the geographical data directories may be found. ||   geog_data_path='$HOME/WRF/wps_topo/geog' || geog_data_path='$HOME/WRF/wps_topo/geog'