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Re: Transform World Ocean Atlas 1/4 x 1/4 degree to NEtCDF


I see what you are talking about now. In February, 2003, I put out the
word through both the Ferret users and LAS users mailing lists that I
was looking for a way to translate the NODC/OCL World Ocean Atlas data
from the native OCL format to NetCDF format. The OCL format is a unique
compressed ascii representation of the data, and is not conducive to
Ferret commands for reading ASCII data.

I received an answer from, among others, Mark Collier at CSIRO. Mark
actually supplied me with the NetCDF files which he created. They hold
the 1 x 1 degree resolution of the data. I only glanced at the Fortran
code which he developed to do this, but you may be able to edit and use
this same code on the .25 degree OCL formatted files to create NetCDF
files. I have cc'd Mark with this email. If Mark wishes, I can supply
the code to you. Let me know if there is more I can do to help.

namba takaya wrote:

> Dear Joe
> Thank you very much for your kind reply.
> I downloaded the high resolution files of 1/4 x 1/4 degree from
> http://www.nodc.noaa.gov/OC5/indprod.html
> The format is the same as 1 x 1 degree except for the 1440 x 720 in
> stead of 720 x 360. of 1 x 1 degree.
> The format discription is at
> http://www.nodc.noaa.gov/OC5/readqd25.html
> I would like to calculate geostrophic current from 1/4 x 1/4 degree WOA.
> What I thought is to use ferret by the way explained in the Chapter 2
> of ASCII DATA/Reading ASCII files and saving by netcdf format.
> I wonder if this is best way for the large amount of data like WOA 1/4
> x 1/4.
> If there are better and easier way, I would like to know it.
> Best regards,
> Takaya Namba

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