Package 'Meteorological basic types' contains:<br /></p><p>- a palette of quantity value [1] classes specialising Measure (or subclasses thereof) for meteorological, hydrological and oceanographic physical properties;<br /></p><p>- a palette of «CodeList» classes for expressing nominal values of meteorological, hydrological and oceanographic physical properties; and<br /></p><p>- various other common basic types used in describing meteorological phenomena.<br /></p><p><br /></p><p>As GML is currently specified, Measure (from ISO 19103 Basic types) _CANNOT_ be specialised. Therefore, the definition of quantity-value classes such as ThermodynamicTemperature and AirTemperature as specialisations of Measure is _ILLEGAL_ with respect to GML.<br /></p><p><br /></p><p>For this reason 'Meteorological basic types' is published as a separate package outside the scope of METCE.<br /></p><p><br /></p><p>As a complement to "ISO 19103 Basic types", "Meteorological basic types" will provide a set of classes and XML types required to describe the physical quantities of interest to meteorologists.<br /></p><p><br /></p><p>[1] Quantity Value: number and reference together expressing magnitude of a Quantity (from the 'International vocabulary of metrology' [http://www.bipm.org/utils/common/documents/jcgm/JCGM_200_2008.pdf])<br /></p>