Re: [CF-metadata] Units of projection_x_coordinate values in "Geospatial projection"

Hi Jonathan, Yes, the change of units is unfortunate. However, there are now operational platforms generating data using this projection as it stands. It will be years (if ever) before a change like this would propagate through those operational systems. This means software would have to support

Re: [CF-metadata] Units of projection_x_coordinate values in "Geospatial projection"

Hi. Is it possible that we just need to loosen the definition of projection_x_coordinate and projection_y_coordinate? Jim [image: CICS-NC] Visit us on Facebook *Jim Biard* *Research Scholar* Cooperative Institute for Climate and

Re: [CF-metadata] Units of projection_x_coordinate values in "Geospatial projection"

Hi Randy, This projection was added to CF with Trac #72 . There's some discussion around the x,y coordinates. I think comment 12 from John Caron addresses the issue of using radians instead of meters:

Re: [CF-metadata] Units of projection_x_coordinate values in "Geospatial projection"

Dear all Metres and radians are not interconvertible, so projection_[xy]_coordinate should not be used as a standard name for a quantity in radians. I think that a defect ticket is needed to change App F for this projection. Possibly we might need new standard names if there aren't appropriate

Re: [CF-metadata] Units of projection_x_coordinate values in "Geospatial projection"

Hi. It sounds like perhaps we should avoid the word "canonical". Perhaps we should change the relevant bit of the definition to read The x (abscissa) and y (ordinate) rectangular coordinates are identified by the standard_name attribute values projection_x_coordinate and projection_y_coordinate

Re: [CF-metadata] Units of projection_x_coordinate values in "Geospatial projection"

Ethan: What you suggest is fine. As an aside …. If you look at the CF standard name table, the canonical units for standard name “ projection_x_coordinate” and “projection_y_coordinate” are meters (not radians). The GOES-R designers (specifically me) inadvertently used these two standard

Re: [CF-metadata] how to use ocean_mixed_layer_thickness_defined_by_*

Dear CF list, I took a bit longer to write down the proposed definitions of these 3 standard names. standard name: sea_water_temperature_difference units: K description: Sea water temperature is the in situ temperature of the sea water. The standard name "sea_water_temperature_difference"