[gradsusr] help required in using "maskout" function in grads

[Clark, Douglas B.]

You need some extra information, as you can't do all this from just one precipitation field.

You need to acquire or develop a land/sea mask on the same grid as the precipitation data - you could look around for a land mask from a model, or create one given some other dataset on land/sea distribution (e.g. look at ISLSCP II website, although there are dozens of other possible sources, and you will need something on the same grid as your precip).

Doug


From: gradsusr-bounces at gradsusr.org [mailto:gradsusr-bounces at gradsusr.org] On Behalf Of Farah Ikram
Sent: 18 July 2012 16:13
To: gradsusr at gradsusr.org
Subject: Re: [gradsusr] help required in using "maskout" function in grads

i have only one variable of precipitation in the data. how can i make land and sea variables from it to mask the ocean area. plus the variable has positive values in the ocean area aswell
On Wed, Jul 18, 2012 at 4:59 PM, Farah Ikram <farahuni at gmail.com<mailto:farahuni at gmail.com>> wrote:
i am trying to mask the data of sea precipitation in  my calculations. please tell me how to use 'maskout" function in for this.

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