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FIDUCEO / FCDR_HIRS

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Azimuth angles need to define reference direction (north) #325

Open gerritholl opened 5 years ago

gerritholl commented 5 years ago

We need to add data variable attributes to the azimuth angles (solar_azimuth_angle and satellite_azimuth_angle) to define that the reference is north. That needs to be included with the FCDRTools as developed by @TomBlock.

From the CF standard names on platform_azimuth_angle, which should also apply to other azimuth angles:

A comment attribute should be added to a data variable with the standard name platform_azimuth_angle to specify the reference direction.

The CF standard names also state it should be clockwise positive eastward, we may also include this in the variable attributes but I'm not sure how.

gerritholl commented 5 years ago

And I should get rid of the -180 add_offset, which just confuses things.

gerritholl commented 5 years ago

See also #304 and https://github.com/FIDUCEO/FCDRTools/pull/18