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 _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
