[gradsusr] Equal area map projections possible in GRADS?

Kevin Levey klevey at customweather.com
Tue Mar 6 17:42:34 EST 2018

TUE 06MAR18: 1430PST

Hi All,

For the first time, a client has come back to us with very specific map projection specifications. To cut a long story short, they currently get their maps with the following specs: 

WKID: 102008 Authority: Esri
Projection: Albers
False_Easting: 0.0
False_Northing: 0.0
Central_Meridian: -96.0
Standard_Parallel_1: 20.0
Standard_Parallel_2: 60.0
Latitude_Of_Origin: 40.0
Linear Unit: Meter (1.0)
Geographic Coordinate System: GCS_North_American_1983
Angular Unit: Degree (0.0174532925199433)
Prime Meridian: Greenwich (0.0)
Datum: D_North_American_1983
  Spheroid: GRS_1980
    Semimajor Axis: 6378137.0
    Semiminor Axis: 6356752.314140356
    Inverse Flattening: 298.257222101
Scale: 1:50 000 000
9.5cm wide x 9.0cm high
High resolution interpolation so the result does not look pixelated (we use .03 dd cell size)

(example attached)

So, before I waste any time here, is it at all possible do output maps in something like this i.e. equal area projection? I have used nothing else other than the general lat/lon outputs. 

The reasons for the stringent specifications, are for printing purposes in the client’s system.

Thanks for your help. 


Kevin M Levey, MSc in Oceans and Atmospheric Sciences (University of Cape Town)
Vice President of Operations
CustomWeather, Inc.
San Francisco, California, USA

"Taking the World by Storm!"


cell: 415-794-0411
work: 415-777-3566
email: klevey at customweather.com

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