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
URL path after community, so that the path to the global drought monitor is analogous. 36
4.3.3 Implementation of Advanced Search and Discovery in the GDMP
Advanced semantic-enriched search and discovery is discussed below for the European
Drought Observatory. Eventual semantic deployment within GDMP would likely be limited to
national drought monitors that are part of GDMP. In addition, the information resources built
up by DEWFORA can be incorporated into the system, including water cycle component
datasets for Africa. The water usage datasets, such as for the Water Information System for
Europe (WISE), and other areas, from GLOWASIS can also be integrated into the system over
time, funding permitting. This type of implementation would require registration of the datasets
within GI-Cat, tantamount to the addition of another drought catalogue (Figure 13). The datasets
would also be registered with the concepts of the water ontology. More information on
establishing interoperability of EuroGEOSS with GEOSS is contained in Section 5.8.
4.4 Support of Increased Global Coverage within the web-based, real-time GDMP
server
The GDMP is a web-based, real time (RT) Geographical Information System (GIS) server,
which is built on top of a distributed database federation and ingests meteorological information
and hydrologic information in real-time, in order to provide alerts, a prototype Drought Early
Warning System. An overview of the alert system is provided for the European Drought
Observatory in Section 5.1.5.
As mentioned in the “Drought—Global” video, the global drought server is integrated
and interoperable with continental drought servers, while the national hydrometeorology drought
monitors within the continental areas are integrated with and made interoperable with the
continental drought servers. The European Framework project Drought Early Warning System
for Africa (DEWFORA) would be expected to possibly serve as an African continental (pan
Africa) continental drought monitor with intercomparisons being prepared between the
DEWFORA and Princeton African drought monitors. The meteorological forcing data sets are
being assembled for South America to integrate with real time meteorological observing system
data to create a continental scale system there. The GEO Community of Practice partner, the
Asian Water Cycle Initiative Drought Working Group (Ichiro Kaihotsu, Hiroshima University) is
developing a regional drought network (with ground-based stations) that may be made
interoperable with the GDMP. An expected, possible configuration for the continental servers is
depicted in Figures 14 through 16.
4.5 Integration of GDMP with GEOSS Architecture
The GDMP is integrated into GEOSS via: 1) metadata creation and addition; 2) catalogue
addition (via EuroGEOSS and GI-Cat; and 3) utilization of OGC Web Mapping Service, via
36 http://www.drought.gov/portal/server.pt/community/global_drought/
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