If you're working Earth sciences, there are at least four different dialects for the terms: 1. Global Change Master Directory 2. ESDIS and derivatives 3. ISO 19115-2 and other, related geospatial metadata standards 4. CF Profile of Unidata (probably the most even handed of the lot - albeit with a fair influence from the general circulation modeling community - and therefore somewhat deficient with respect to various observations)
There are serious divergences in the vocabularies (GCMD and CF Profile have some parameter names with each dialect having about 1,000 terms and only about five to ten exact matches when all the terms are cast into upper case. The JPSS terms for the upcoming operational system may have more than 100,000 individual items, but their vocabulary probably doesn't match up exactly with the World Meteorological Organization's terms, etc. In short, there's exactly the mishmash one might expect from trying to find the "common language" of isolated Amazonian tribes who suddenly encounter each other on the streets of Rio. Best of luck trying to get to some commonality in describing either data formats or time-space sampling patterns. Bruce B. On Sun, Jan 15, 2012 at 3:12 PM, Mattmann, Chris A (388J) <[email protected]> wrote: > On Jan 15, 2012, at 9:05 AM, Crichton, Daniel J (4231) wrote: > >> Building a solid data architecture requires someone with extensive >> experience. The planetary science data architecture, for example, is an >> international effort with many sub-disciplines. Capturing data compliant >> to that data architecture requires defining a solid, consensus-based model >> and that takes time and it is a community effort. Other efforts aren't as >> rigorous, so I think it depends on the application and use of OODT. In >> some cases, it may be a simple model. > > +1, agreed. > > Cheers, > Chris > > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > Chris Mattmann, Ph.D. > Senior Computer Scientist > NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA > Office: 171-266B, Mailstop: 171-246 > Email: [email protected] > WWW: http://sunset.usc.edu/~mattmann/ > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > Adjunct Assistant Professor, Computer Science Department > University of Southern California, Los Angeles, CA 90089 USA > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >
