Global Drought Monitoring Service through the GEOSS Architecture ...

Architectural Implementation Pilot, Phase 3 Version: 2.0
Global Drought Monitoring and European Drought
Observatory-Water SBA Engineering Report
Date: 11/Feb/2011
FLUXNet controlled vocabulary, the surface water budget equation, the surface energy budget
equation, and the land use classification system of Boston University and the University of
Maryland (as modified by GlobeCover Product Specification of MERIS. These provide a
framework in which the drought vocabulary module can be included and expanded.
An example of the expansion of the land module of the water ontology is presented in
Figure 18.
Figure 18 Land Surface Module of the Water Ontology
6. Evaluating How the Advanced Semantic EuroGEOSS Search and Discovery
System Works
By the end of AIP-3, the EuroGEOSS search interface had been incorporated into the
operational European Drought Observatory web site, even though the water ontology was not
fully functional within the EuroGEOSS Discovery Augmentation Component. Be that as it may,
a specialized drought vocabulary (section 10) was available and linked to the EuroGEOSS
broker. How effectively does this system retrieve specialized drought datasets, its stated user
objective?
The EuroGEOSS Drought Catalog page pops up, containing a list of drought terms
(Section 10), followed by a list of terms representing the GEO Societal Benefit Areas (Section
11). As has been noted, the list of drought terms contains the water budget components, i.e.,
groundwater, discharge, evapotranspiration, low flow, piezometric level, precipitation, snow, soil
moisture, soil moisture deficit, and snow pack.
Clicking the groundwater term and hitting the search button brings up two pages of
references.
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