[CF-metadata] add_offset for time dimension

From: Jonathan Gregory <j.m.gregory>
Date: Thu, 16 Sep 2010 18:04:50 +0100

Dear Upendra

add_offset is included in CF for data variables, but not coordinate variables.
Its intention is to help with packing data (CF section 8.1).

For time coordinate variables, however, an offset can effectively be included
in the units, which have the form "UNITS since TIME". You can specify any
reference TIME you like. Why would you like an offset for X and Y coordinates?

Best wishes

Jonathan
Received on Thu Sep 16 2010 - 11:04:50 BST