Global Drought Monitoring Service through the GEOSS Architecture ...

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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/ Page 44
Architectural Implementation Pilot, Phase 3 Version: 2.0 Global Drought Monitoring and European Drought Observatory-Water SBA Engineering Report Date: 11/Feb/2011 installed Minnesota MapServer (University College London, Princeton, and EDO) and ESRI GIS Server (NIDIS). Additional web services are slated for installation. See section for more details in interoperability of EuroGEOSS with GEOSS. 4.6 Remote Sensing Soil Moisture Integration Figure 7’s lowest tier displayed both numeric and sensor sources of data originating from the observing system. The numerical models are forced by real-time meteorological data from the observing system. Sections 2.6.2 and 2.6.3 showed how space-based scatterometers could provide soil profile and root zone soil moisture. These results can be displayed alongside modeled soil moisture data; direct data assimilation into a common product is also a possibility or even the latter with the display of separate inputs. The US National Aeronautics and Space Administration (NASA) Soil Moisture Active and Passive (SMAP) results can also be added when they go live and come on line. 4.7 Adding Water Usage Information Layers, including Agriculture GLOWASIS may provide a basis for incorporating water usage information and data into the GDMP. This would also be a prerequisite for assessing drought vulnerability. Page 45
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