[CF-metadata] clarification using cell_methods & cell_bounds, standard name for acoustic travel time

From: Jonathan Gregory <j.m.gregory>
Date: Tue, 15 May 2012 20:33:42 +0100

Dear Matt

> Is my understanding correct that the cell_methods are attributed to the data
> variable, whereas the cell_bounds are attributed to the coordinate variable?

Yes, that's right.

> Also, is there a standard name suitable for expressing an acoustic travel time
> from an underwater echo sounder signal?

I don't think there currently is.`

The bounds variable of a coordinate (N) is dimensioned (N,2) (in CDL order)
e.g.

> DEPTH=1;
> NBOUNDS=2;
> float DEPTH(DEPTH);
> DEPTH:units="m";
> DEPTH:bounds="AUX_DEPTH_BOUNDS";
> float AUX_DEPTH_BOUNDS(DEPTH,NBOUNDS);

See CF section 7.1.

Yes, I think you are right to put "DEPTH: sum" in cell_methods.

Cheers

Jonathan
Received on Tue May 15 2012 - 13:33:42 BST