Spatial Object Types derived from the Use Cases.

Several types of spatial object were identified in the 11 Use Cases. The left hand side of this table shows which object types exist in which use cases. The right hand side shows how the object types might be mapped to known information types in existing data models or application schemas.

• CDM = Unidata Common Data Model
• CSML = Climate Science Modelling Language - CSML version 3 Poster showing O&M and CDM links
• AIXM = Aeronautical Information Exchange Model
• WOML = Weather Objects Modelling Language
• WXXM = Weather information Exchange Model

Information types	Future Aviation	Current Aviation	Severe Weather	Hurricane	Winter Highway	India Agri.	Sub Sahara	Emergency Response	Polar Year	Model Steering	Flood Forecast	Data Models ...
	1	2	3	4	5	6	7	8	9	10	11	CDM	CSML	WOML	WXXM	AIXM
Surface obs:station, buoy, road sensor	x	x	x		x			x				Point StationTimeSeries	Point PointSeries		Point PointSeries SurfaceReport
Area forecasts (e.g.AIRMETs, SIGMETs)	x	x												WeatherForecast (with any gml:Feature derived objects as collection members)	AreaForecast
Aerial Observations	x	x	x												AerialReport, same as CSML/coverages
Radar Imagery	x	x	x	x	x			x				RadialSweep	ScanningRadar		same as CSML/coverages
Satellite Data	x	x	x					x				Swath, Grid	Swath, Grid		same as CSML/coverages
Dropsondes			x									Profile	Profile		same as CSML/coverages
Model data(wind, temp, RH etc)	x	x		x								Grid	GridSeries		same as CSML/coverages
Other Gridded products*	x	x	x	x	x			x				Grid	Grid, GridSeries		same as CSML/coverages
Alerts & reports	x	x	x		x										none
Sensible Weather Objects (dynamic)			x											ColdFront WarmFront OccludedFront Jet Trough UpperTrough CloudArea SurfacePrecipitationArea TextForecastArea	Contour
Point-based probability distribution				x								Point, Grid?	Point/Grid?		same as CSML/coverages
Probabilistic hurricane track				x								Trajectory (many)	Trajectory (many)		same as CSML/coverages
Images of storm inundation				x											none
Road surface modelling					x										none
Road surface thermal mapping					x										none
Routes (road segment geometries)					x										PointSeries?
Verification statistics					x										probabilities?
Licensing conditions					x										none
Lightning Imagery								x							none

*Gridded products mentioned = turbulence, icing, ceiling, convection etc. Data assimilation, simulations or statistical processes.

-- DominicLowe - 25 May 2010