In the hydrology domain, a very heterogeneous landscape of data sources exists. Water related (sensor) data are served through a large variety of interfaces and data formats. This complicates the integration of new hydrological data sources into application systems.
To facilitate the exchange of hydrological data, GEOWOW contributes to international standardization processes
within the Hydrology Domain Working Group, a joint working group of the Open Geospatial Consortium (OGC)
and the World Meteorological Organization (WMO).
An emphasis is put on aligning the international standardization processes with the development of the GEOSS Common Infrastructure (GCI).
In the opposite direction, GEOWOW partners ensure that the requirements of the Water community and the related developed international standards are fed back into the enhancement of the GCI. To achieve this, GEOWOW partners develop accordingly hydrological data services for the integration and enhancement of the GCI.
To respond to the needs of the Water community for an improved hydrological data sharing,
GEOWOW developed for the first time a common global exchange infrastructure for hydrological data
based on standardized formats and services.
In cooperation with the OGC/WMO Hydrology Domain Working Group, a fully interoperable Hydrology Profile of the OGC Sensor Observation Service (SOS 2.0) has been created, that uses the common OGC Water ML 2.0 data model/format for encoding time series data. Server and client implementations are provided by two project partners: Kisters and 52°North.
Standards and services used serve the specific requirements of the Water community and allow harmonized access to different hydrological data sources.
Based on these international standards, several software components have been implemented and integrated as improved functionalities into the GEO Discovery and Access Broker. The provided hydrological data services enhance the GEOSS Common Infrastructure (GCI) regarding the discovery, access and use of hydrological data. Together with the advancement of formats and services, clients and tools have been enhanced that specifically meet the requirements for displaying and comparing hydrological time series data.