Skip Navigation Links www.nws.noaa.gov 
NOAA logo - Click to go to the NOAA home page National Weather Service   NWS logo - Click to go to the NWS home page
Climate Prediction Center
 
 

 
About Us
   Our Mission
   Who We Are

Contact Us
   CPC Information
   CPC Web Team

 
HOME > Monitoring_and_Data > Oceanic and Atmospheric Data > Reanalysis: Atmospheric Data > wgrib2-set_radius
 

wgrib2: -set_radius

Introduction

Most grib2 Grid Definition Templates (PDT) include the shape and size of Earth. Such information is necessary for finding the latitude and longitude of the grid points in various projections. The -set_radius option sets the shape and size of Earth and the -radius option shows the the shape and size.

Usage

-set_radius N      N=0,2,4,5,6,8,9
                   Code Table 3.2 is set to N
-set_radius 1:R    R=radius in meters (spherical)
                   Code Table 3.2 is set to 1
-set_radius 3:X:Y  X=major axis Y=minor axis (oblate spheroid), X, Y in km
                   Code Table 3.2 is set to 3
-set_radius 7:X:Y  X=major axis Y=minor axis (oblate spheroid), X, Y in m
                   Code Table 3.2 is set to 7

Example

$ wgrib2 small.grb2 -set_radius 0 -radius
1:0:code3.2=0 sphere predefined radius=6367470.0 m
$ wgrib2 small.grb2 -set_radius 1:6300000 -radius
1:0:code3.2=1 sphere user defined radius=6300000.0 m
See also: -radius

NOAA/ National Weather Service
National Centers for Environmental Prediction
Climate Prediction Center
5830 University Research Court
College Park, Maryland 20740
Climate Prediction Center Web Team
Page last modified: July 8, 2015
Disclaimer Privacy Policy