Re: question about convert ECMWFds117.0 data into fix grid data

From: Yinghui Liu <yinghuil_at_nyahnyahspammersnyahnyah>
Date: Wed, 19 Jul 2006 18:38:23 -0500

Hi Dennis:

Thank you very much for your reply. The reason using ds117.0 is that
ds118.0 does not give vertical integrals data. Following Francois's
I am wondering how high-resolution of the regular grid the ERA ds117* data
can be converted to in NCL?



Dennis Shea wrote:

>>I am trying to convert the ECMWFds117.0 data to 2.5*2.5 degree data.
>>I am using the NCL g2fsh function to do that. The problem is that
>>ECMWFds117.0 data is in reduced N80 Gaussian grid, which need
>>to be converted to regular N80 Gaussian grid first, I guess. Does anyone
>>know a way to convert the reduced N80 Gaussian grid to regular N80
>>Gaussian grid in NCL?
>[1] NCL *automatically* converts the data to a
> regular N80 Gaussian grid. NCL uses an ECMWF
> supplied code to do this.
>[2] Why not use ds118.0? It is already on a 2.5 x 2.5 grid
> ERA40 2.5 Degree Latitude-Longitude Gridded Surface
> and Single Level Analysis from ECMWF
>[3] If you want to convert from GRIB to netCDF use NCL's
> ncl_grib2nc ... a command line operator.
>good luck

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Received on Wed Jul 19 2006 - 17:38:23 MDT

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