[CF-metadata] Accumulation since timestep 0, cell-method

From: Heiko Klein <Heiko.Klein>
Date: Tue, 05 Aug 2008 13:34:20 +0200

Some of our models write out precipitation data as accumulated
precipitation starting at time-step 0. E.g.

Time: 0 3 6 9 12 15
Precip: 0 15 15 25 26 26

meaning that there was no precipitation between 3 and 6, and no
precipitation between 12 and 15.

One solution would be to define Time:bounds as
Time:bounds: 0,0, 0,3, 0,6, 0,9, 0,12, 0,15 but then I would need to
declare different times for the other paramters since Time:bounds belong
to Time and not to precipitation. Therefore I would prefer to give
precipitation a cell_method attribute, e.g.
percip:cell_method: "time: sum since time(0)"

Does there exist such a cell_method? Or is this a very uncommon case?

Best regards,

Heiko

-- 
Dr. Heiko Klein                              Tel. + 47 22 96 32 58
Development Section / IT Department          Fax. + 47 22 69 63 55
Norwegian Meteorological Institute           http://www.met.no
P.O. Box 43 Blindern  0313 Oslo NORWAY

Received on Tue Aug 05 2008 - 05:34:20 BST