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[CF-metadata] question about sigma level vertical coordinate.

From: Bert Jagers <Bert.Jagers>
Date: Tue, 3 Oct 2006 16:47:01 +0200

Let me continue with a question similar to Ed's regarding the ocean sigma
coordinate.

z(n,k,j,i) = eta(n,j,i) + sigma(k)*(depth(j,i)+eta(n,j,i))

The definition does not include the time (step) index n for the depth. What
if I want to store morphological developments in a netCDF CF compliant data
file. In that case, may I assume an extension of the definition to

z(n,k,j,i) = eta(n,j,i) + sigma(k)*(depth(n,j,i)+eta(n,j,i))

or would we have to introduce a completely new coordinate system for such
extensions?

Best regards,

Bert

----- Original Message -----
From: "Jonathan Gregory" <j.m.gregory at reading.ac.uk>
To: <cf-metadata at cgd.ucar.edu>
Sent: Tuesday, October 03, 2006 4:25 PM
Subject: [CF-metadata] question about sigma level vertical coordinate.


>> My question: is the ptop variable always a scalar variable?
> As far as I know, yes. Jonathan
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Received on Tue Oct 03 2006 - 08:47:01 BST

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