1. WMS Implementation of Surface Weather Observations
Tom Kralidis
Meteorological Service of Canada
25 February 2014

2. Data Quality Dashboard

3. Data Quality Dashboard OWS
Realtime surface weather observations
Automated Quality assessment
Powered by OGC:WMS 1.1.1/1.3.0 (+WFS 1.0.0/1.1.0)
Supports WMS-Time, but not BP per se (yet)
MapServer

4. OWS Implementation Network of Hourly Observations ( Layer)
Datetime ( Dimension [time])
Extent automagically generated in Capabilities XML via automated process
If no TIME parameter is supplied, display ‘latest observation’
Elements (air temperature, relative humidity, etc.) ( Style Names/Titles, Layer Keywords)
Quality assessment flags ( Style Names)
Overall rollup ( Default Style)
Per element

5. WMS Visualization of Qa Flags
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6. Pros / Cons Pros Cons OGC CSW Best Practice for MetOcean can help
Fits into existing implementations
Works with off the shelf software
Manageable Capabilities for downstream harvesters
Cons
Catalogue Harvest / Search Granularity
Searching for air temperature will return entire layer
Client needs to do WMS GetCapabilities, present layers/styles and then bind based on selection
OGC CSW Best Practice for MetOcean can help
*How* an OGC WMS BP for Met is harvested and made searchable
e.g. 1 WMS Server with 1 Layer with 5 styles becomes 7 CSW records
One click find/bind