[CF-metadata] Fwd: surface_air_pressure vs air_pressure_at_sea_level

From: Jonathan Gregory <j.m.gregory>
Date: Thu, 15 Mar 2012 18:27:34 +0000

Dear Nan

If the quantity has "surface" in its standard name, it should not have a
z-coordinate, because "surface" quantities are defined as being values on
"the surface" (i.e. bottom of the atmosphere) z(x,y). Given x and y, z
is known. The same applies to quantities with standard names that contain
other named surfaces, such as toa (rather a vague surface!) or sea_floor.

Best wishes

Jonathan
Received on Thu Mar 15 2012 - 12:27:34 GMT