Re: [CF-metadata] relationship between CF model and netCDF-classic data model

2011-04-04 Thread Steve Hankin
On 4/2/2011 2:03 AM, Stefano Nativi wrote: Hi Upendra, My plane was delayed ... Please, find attached the draft CF-netCDF data model specification that Ben and I are developing for the OGC. In this version of the specification, the CF conventions are still version 1.1. However, I have

Re: [CF-metadata] physical vs dimensional units

2011-04-04 Thread Schultz, Martin
Dear all, Jonathan wrote: I don't really agree with this. Units are units, not descriptins of quantities. grams of CO2 per grams of air is a mass mixing ratio and is dimensionless. [...] Steve wrote: The National Institute of Science and Technology (NIST) agrees that information

Re: [CF-metadata] physical vs dimensional units

2011-04-04 Thread Steve Emmerson
Martin, On 04/04/2011 09:37 AM, Schultz, Martin wrote: if this is the direction to take, then we will need several expressed_as standard_names for atmospheric chemistry. Typical example: volatile organic compounds are often expressed as mass mixing ratio based on either their molecular

Re: [CF-metadata] relationship between CF model and netCDF-classic data model

2011-04-04 Thread Stefano Nativi
Hi Steve, I am happy you found our work useful. You raised very good discussion points ! Presently, we are working to include CF ver.1.5 in the diagram and, hence, in the clauses. Indeed, any comment and/or contribution is very welcome. Thanks, Stefano On 4/2/2011 2:03 AM, Stefano

Re: [CF-metadata] udunits time unit question

2011-04-04 Thread Christopher Barker
On 3/31/11 10:18 AM, Seth McGinnis wrote: For those who have never encountered a non-standard calendar in the wild, here's one place they show up: Thanks for the clarification. I draw the following conclusions: 1) converting between Calendars is ripe for error/mis-interpretation, and