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Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.
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John Graybeal wrote:
I think 'requiring a Z' and 'requiring a Z with every point' are two different things. I don't think anyone meant to argue for the latter, or they'll correct me if I'm wrong.
To take an easy case first, for surface-based measurements like ship point observations, specifying 'surface' in one place for all Z coordinates (e.g., via an attribute) seems like a reasonable approach.
You can use a scalar, "nominal" coordinate variable, like: variables; char z(z_strlen); float lon(obs); float lat(obs); double time(obs); float dataVar(obs); dataVar:coordinates = “lon lat z time”; data: z = "tropopause";
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