WMO

4.2 A review of other data models that could be adopted for use with

weather radar data exchange

CBS/OPAG-IOS Workshop on Radar Data Exchange

Exeter, UK, 24-26 April 2013

Daniel Michelson, SMHI, Sweden

WMO

What is “other”?

Formats endorsed by WMO, from CBS-XIV (2009):

“BUFR, CREX, XML, netCDF, HDF, including BUFR/CREX/GRIB tables”

Therefore, logic has it that “other” = anything else.

Note, however, that file format and information model have been lumped together once again.

For example: TITAN (see 3.3)

WMO

Metadata model(s)

Aviation XML – METCE WMO task coordinated by Enrico Fucile, ECMWF An orthodox umbrella data model for application to

aviation messages. A framework containing logical data model that

can then be implemented in different file-format encodings.

Applies ISO/TC 211 including GML. UML to formulate the Observation & Measurement

model, and heavy use of XML to represent it.

WMO

Aviation XML – METCE (continued)

First AvXML version 1.0RC of the model, under review, to be adopted mid-2013.

Then METCE ends…

WxR could support the idea of a WMO Task Team on Weather Radar Data Model that bases its work on METCE, elaborating it if such an approach is determined to offer an appropriate means of addressing and achieving a coherent global solution for weather radar data.

WMO

Geography Markup Language (GML)

Already global de facto standard. Widespread, e.g. Open Geospatial Consortium

software. Probably not realistic alternative for weather radar.

WMO

File-format encodings

XML GeoTIFF PNG GIF Proprietary (radar industry) In-house McIdas CSV

www.wmo.int

Thank you for your attentionDaniel Michelson

Swedish Meteorological and Hydrological Institute

Norrköping, Sweden

daniel.michelson@smhi.se