Publishing WaterML2 Time Series Data using GeoServer
by Florence Tan, Rini Angreani, Peter Taylor, Simon Cox
A team from Commonwealth Scientific and Industrial Research Organisation (CSIRO) in Australia has successfully upgraded OpenGeo GeoServer Software and WaterML2.0 application schema to publish water storage time series information from the Australian Bureau of Meteorology (BOM).
Australia has a water scarcity crisis that is being addressed through new water policy, regulatory, investment and management strategies. Under Australia’s 2007 Water Act, BOM collects observations of storage level and stream flow from over 200 providers across the nation. Through the Australian Water Resource Information System (AWRIS), the time series data is being standardised, organised, interpreted and used to generate multiple data products – e.g. national water storage product .
Through a research alliance with CSIRO, work has been undertaken to define exchange and interface standards for the time series water observations data based on suitable community data models and standards for services . The recently adopted OGC WaterML2.0 has been selected as the application schema, and a modified OGC WFS as the service interface, based on GeoServer software. CSIRO has previously made major contributions to GeoServer, particularly in the form of the “application schema” plugin for WFS, which supports mapping from a local schema to a community model for serving data using a standard schema. This has now been upgraded with new functionality to enable the mapping of the time series observations data base on WaterML2.0 .
Using the upgraded GeoServer software, OGC WFS is delivering valid time series data using the newly published WaterML2.0 application schema for the first time . This has enabled BOM to demonstrate and validate Spatial Data Infrastructure (SDI) standards and architecture for building the National Environmental Information Infrastructure (NEII).