[CF-metadata] date and time

From: Jonathan Gregory <j.m.gregory>
Date: Thu, 23 Oct 2008 21:33:31 +0100

Dear John

> DateTime (ISO8601), Elapsed Mission Time (seconds), Sensor Time
> (ISO8601), Sensor Date (ISO8601), Day-of-Year
> Data Record:
> 2008-08-18T18:57:55.79, 8403.33, 12:12:11,2008-08-18,262
...

Could the third and fourth fields (sensor date and time) be combined and
encoded as a single time-since-ref variable? We could give it a new standard
name e.g. sensor_time. I'd prefer that to adopting ISO8601 as a completely
different way of encoding time in CF.

> The fifth field is at least a 'days since' format, though the
> reference point will have discontinuities every new year. I'm a little
> at sea as to whether this can be called 'time' or not.

Yes, I think it would be a time - but what is it? Is just repeating the
sensor date, in effect?

Cheers

Jonathan
Received on Thu Oct 23 2008 - 14:33:31 BST