Re: [CF-metadata] Vertical datums (again)

2014-02-17 Thread John Graybeal
Simple terms like height, depth, and altitude are great for onboarding -- though complicated usage ('geoid must always be defined in the grid_mapping'), lessens the onboarding benefit. And if they are ambiguous, the long-term usability is affected. (See: sea_surface_temperature.) I want a consi

Re: [CF-metadata] Vertical datums (again)

2014-02-17 Thread Signell, Richard
It looks like the OGC Met-Ocean Domain Working Group has also been thinking about this: http://external.opengeospatial.org/twiki_public/MetOceanDWG/MetOceanWMSBP20120206 This doc is two years old, so I'll ask Jeff DLB if he can summarize for the list what they came up with. -Rich -R On Mon, Fe

Re: [CF-metadata] Vertical datums (again)

2014-02-17 Thread Jonathan Gregory
Dear all Thank you for clarifications and further information. We used "altitude" for "height above geoid" because that's what it most commonly means, I think. However, it's unclear. To avoid confusion, we could rename altitude as height_above_geoid, using aliases. There are 14 standard names whi