land ocean mask

[Ricardo Marcelo]

Which resolution CO data has? You can use a land mask from GFS "land use"
parameter in any grib file, it comes with 0.5o degree resolution.


On Wed, Jun 18, 2008 at 1:37 AM, Sachin Ghude <sachinghude at tropmet.res.in>
wrote:

>  Thanks. But its not working.
>
> From where I can get the Mask Grid where sea values are set to negative.
>
> Sachin
>
> *---------- Original Message -----------*
> From: Charles Seman <Charles.Seman at NOAA.GOV>
> To: GRADSUSR at LIST.CINECA.IT
> Sent: Tue, 17 Jun 2008 11:12:21 -0400
> Subject: Re: land ocean mask
>
> > Sachin,
> >
> > Perhaps the GrADS maskout function may be helpful...
> > http://grads.iges.org/grads/gadoc/gradfuncmaskout.html
> >
> > Chuck
> >
> > Sachin Ghude wrote:
> > > Dear All,
> > >
> > > I am using following set of expressions to plot an area averaged time
> series of the CO
> > > data (which covers data over land and also over ocean). Could somebody
> advice me how
> > > to plot a time series which will take only data over land and not data
> over ocean.
> > >
> > > 'set x 1'
> > > 'set y 1'
> > > 'set t 1 132'
> > > 'set gxout print'
> > > 'set prnopts %g 1 1'
> > > 'd tloop(aave(CO,lon=81,lon=91,lat=20,lat=27))'
> > > say result
> > > write ('C:\CO_timeseries.xls',result)
> > > 'reinit'
> > >
> > > thanks in advance
> > >
> > > Sachin Ghude
> > >
> >
> > --
> >
> > Please note that Charles.Seman at noaa.gov should be considered my NOAA
> > email address, not cjs at gfdl.noaa.gov.
> >
> > ********************************************************************
> > Charles Seman                                Charles.Seman at noaa.gov
> > U.S. Department of Commerce / NOAA / OAR
> > Geophysical Fluid Dynamics Laboratory         voice: (609) 452-6547
> > 201 Forrestal Road                              fax: (609) 987-5063
> > Princeton, NJ  08540-6649            http://www.gfdl.noaa.gov/~cjs/<http://www.gfdl.noaa.gov/%7Ecjs/>
> > ********************************************************************
> >
> > "The contents of this message are mine personally and do not necessarily
> > reflect any position of the Government or NOAA."
> *------- End of Original Message -------*
>



-- 
============================================================
Ricardo Marcelo da Silva
LAMMA - Laboratório de Modelagem de Processos Marinhos e Atmosféricos
Depto de Meteorologia - Instituto de Geociências
Centro de Ciências Matemáticas e da Natureza
Universidade Federal do Rio de Janeiro
e-mail: ricardom at acd.ufrj.br
phone: 55 21 2598-9470 r 24
============================================================
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