Correct recommended units for lat and lon

[apamment]

Beate Geyer has pointed out that the recommended units for latitude and longitude coordinate variables in sections 4.1 and 4.2 of the conventions document are inconsistent with the canonical units published in the standard name table.

Sections 4.1 and 4.2 of the conventions recommend degrees_north and degrees_east for lat and lon, respectively. The standard name table uses the singular form for the canonical units, i.e. degree_north and degree_east. The two sources of documentation should be made consistent. Beate has indicated a preference for the singular form of the unit, therefore it is proposed that the conventions document should be modified to agree with the standard name table. This requires modification to the sentences in sections 4.1 and 4.2 beginning with "The recommended unit ...".

Alison

[taylor13]

Perhaps I'm wrong about this, but I don't think "canonical" implies "recomended"; "height_at_cloud_top" has canonical units of "m", but I don't think we are recommending the use of "m", say over "km". According to the conventions (section 4.2), the recommended units for longitude and latitude are "degrees_east" and "degrees_north", respectively, and these already consistent with the canonical units appearing in the standard name document ("degree_east" and "degree_north" are in fact synonymous with the recommended units). I think we should not change the recommended units without a good reason. Much data has already been written in conformance with the recommendation.

[mlaker1]

Objection is unchallenged, so I'm closing this ticket.