Global Drought Monitoring Service through the GEOSS Architecture ...
Global Drought Monitoring Service through the GEOSS Architecture ...
Global Drought Monitoring Service through the GEOSS Architecture ...
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Architectural Implementation Pilot, Phase 3 Version: 2.0<br />
<strong>Global</strong> <strong>Drought</strong> <strong>Monitoring</strong> and European <strong>Drought</strong><br />
Observatory-Water SBA Engineering Report<br />
Date: 11/Feb/2011<br />
video. Note that <strong>the</strong> interface and tool has not only has a list of scientific terms but also has<br />
<strong>the</strong>se terms “arranged,” so that <strong>the</strong> terms are linked to one ano<strong>the</strong>r. This tool enables a user to go<br />
from <strong>the</strong> general term—“drought”—to an associated term “drought indicator” to specific drought<br />
indicators, such as “meteorological drought indicator,” <strong>the</strong>n to “precipitation” and <strong>the</strong>n to<br />
“Standard Precipitation Index.” Alternative branches are “drought” to “drought indicator” to<br />
“agricultural drought indicator” to “soil moisture” or “drought” to “drought indicator” to<br />
“hydrologic drought indicator” to “groundwater” to “terrestrial water storage change.” Datasets<br />
also have tags to <strong>the</strong> appropriate geographic area, such as “England.”<br />
4. <strong>Global</strong> Implementation of <strong>the</strong> <strong>Drought</strong> <strong>Monitoring</strong> <strong>Service</strong> <strong>through</strong> <strong>GEOSS</strong><br />
4.1 Components of <strong>the</strong> System <strong>Architecture</strong> of <strong>the</strong> <strong>Global</strong> <strong>Drought</strong> <strong>Monitoring</strong><br />
Portal<br />
The <strong>Global</strong> <strong>Drought</strong> Monitor utilizes and is designed to have a “drill-down” capability.<br />
One begins at <strong>the</strong> global (and coarsest spatial resolution) and <strong>the</strong>n is directed toward higher<br />
spatial resolution regional maps. The user can follow <strong>the</strong> sequence of events by accompanying<br />
<strong>the</strong> steps while watching <strong>the</strong> “<strong>Drought</strong>—<strong>Global</strong>” video. 24<br />
One begins with a <strong>Global</strong> World Map (a <strong>Global</strong> <strong>Drought</strong> Map, as well), accessible on <strong>the</strong><br />
Graphical User Interface (GUI). The <strong>Global</strong> <strong>Drought</strong> <strong>Monitoring</strong> Portal is accessible from <strong>the</strong><br />
World Wide Web. 25<br />
The layout of <strong>the</strong> entry web page (index or home page) includes <strong>the</strong> title bar “”Beyond<br />
<strong>Drought</strong>: <strong>Global</strong> Participation for Better Planning and Response,” underneath of which are four<br />
underlying header tabs, arranged from left to right: “Current Conditions,” “Interactive Maps and<br />
Data,” “Regional <strong>Drought</strong> monitoring,” and “About.”<br />
The “Current Conditions” tab displays <strong>the</strong> “<strong>Global</strong> <strong>Drought</strong> Monitor” of <strong>the</strong> University<br />
College London global drought monitor. 26 As noted in <strong>the</strong> Disclaimer to <strong>the</strong> University College<br />
London <strong>Global</strong> <strong>Drought</strong> Monitor, <strong>the</strong> (UCL) <strong>Global</strong> <strong>Drought</strong> Monitor provides <strong>the</strong> 'overall<br />
drought picture' on a ~100km spatial scale. The maps are not designed to depict local conditions.<br />
As a consequence, <strong>the</strong>re could be water shortages or crop failures within an area not designated<br />
as drought, just as <strong>the</strong>re could be locations with adequate water supplies in an area designated as<br />
'extreme' or 'exceptional' drought.”<br />
24 http://www.ogcnetwork.net/pub/ogcnetwork/<strong>GEOSS</strong>/AIP3/pages/Demo.html<br />
25 http://www.drought.gov/portal/server.pt/community/global_drought<br />
26<br />
http://drought.mssl.ucl.ac.uk/drought.html?map=%2Fwww%2Fdrought%2Fweb_pages%2Fdrou<br />
ght.map&program=%2Fcgibin%2Fmapserv&root=%2Fwww%2Fdrought2%2F&map_web_imagepath=%2Ftmp%2F&map<br />
_web_imageurl=%2Ftmp%2F&map_web_template=%2Fdrought.html<br />
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