Re: [CF-metadata] fixed sensors, depth, datum

2008-09-30 Thread olivier lauret
CF conventions. Hope this will help.. Best wishes Olivier. -Message d'origine- De : [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] De la part de Ethan Davis Envoyé : mardi 30 septembre 2008 06:44 À : Philip Bentley Cc : cf-metadata@cgd.ucar.edu Objet : Re: [CF-metadata] fixed sensors

Re: [CF-metadata] fixed sensors, depth, datum

2008-09-29 Thread Jonathan Gregory
Dear Ethan I agree that different definitions of the reference ellipsoid do not constitute different geophysical quantities. Likewise different definitions of the geoid all give the same geophysical quantity. Therefore I agree that the geoid should be identified as part of the CRS (naming it in

Re: [CF-metadata] fixed sensors, depth, datum

2008-09-26 Thread Ethan Davis
Hi Jonathan, I would argue against them being different quantities because there exist transformations between these various heights. Is that not enough to indicate they are the same quantity? Ethan Jonathan Gregory wrote: Dear Jon - height relative to the ellipsoid - height relative

[CF-metadata] fixed sensors, depth, datum

2008-09-25 Thread Jonathan Gregory
Dear all Referring to Dale's list of requirements, this is my understanding of where we are: - height relative to the ellipsoid - height relative to the geoid Olivier pointed out we have already agreed to add height_above_reference_ellipsoid, and Dale reminded us that height relative to the

[CF-metadata] fixed sensors, depth, datum

2008-09-02 Thread Dale Robinson
Good afternoon, The CeNCOOS Bays group is developing a netCDF standard for our water monitoring instruments. We've receive some fantastic help from John Graybeal and the folks at MMI. We are to a point where we have a couple of questions that are stumping us. I was hoping the CF group could