Dissemination of the UAE solar resource atlas over the web: preliminary results

DISSEMINATION OF THE UAE SOLAR
RESOURCE ATLAS OVER THE WEB:
PRELIMINARY RESULTS

Jacinto Estima and Hosni Ghedira
Research Center for Renewable Energy Mapping and Assessment
Masdar Institute of Science and Technology, Abu Dhabi, United Arab Emirates

1st regional Geospatial Scientific Summit (GSS), 2012
American University in Dubai, United Arab Emirates
12-13 November 2012

CONTENTS
• Introduction
• Open Geospatial Consortium, open standards and Web Map
Service
• Development of the application
• Preliminary results
• Conclusions and future work (Global Atlas Initiative)

Jacinto Estima 1st regional Geospatial Scientific Summit (GSS), 12-13 November 2012
2
Hosni Ghedira American University in Dubai

INTRODUCTION (1)
• The Research Center for Renewable Energy Mapping and
Assessment at Masdar Institute was mandated by the UAE
Government to develop the UAE solar and wind atlases
• It is part of the UAE commitment to support the International
Renewable Energy Agency (IRENA) in its advancement of a publicly-
accessible atlas of solar and wind resources

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INTRODUCTION (2)
• The resultant atlases should be disseminated to end-users and
stakeholders and included on the future Global Atlas platform
• Dissemination should take advantage of the World Wide Web
– Allows data sharing between different users at different locations
• Ongoing project on the development of an application to make the
produced solar and wind maps available to end users and
stakeholders:
– technology independent and based on open standards

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OGC, OPEN STANDARDS AND WMS (1)
• The first attempts to develop systems to share information were
mostly based on proprietary technologies
• Interoperability problems arise:
– “Interoperability refers in general to the ability of various autonomous
systems to bring together parts and to operate in collaboration. In most cases
this means the exchange of meaningful information” (Vckovaki, 1998)
• Use of clear standards or specifications in order to avoid issues
related with interoperability
– Applications developed using open specifications can talk the same language
which means that they can understand each other and easily exchange
information

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• Open Geospatial Consortium (OGC)
– Created in 1994, is an international consortium of 475
companies, government agencies and universities that develops publicly
available interface standards, called specifications
– Several standards developed:
• Web Map Service (WMS)*
• Web Feature Service (WFS)
• Web Coverage Service (WCS)
• Web Processing Service (WPS)
• Sensor Observation Service (SOS)
• Styled Layer Descriptor (SLD)*
• Among many others…

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• Web Map Service (WMS)
– One of the most famous OGC specifications
– Based on XML language
– Defines the rules to request some geographic layers of an area of
interest, and obtains, as result, one or more geo-registered map images
(returned as JPEG, PNG, etc.)
– Implements 3 Operations:
– GetCapabilities (mandatory) – to know what the server has to offer
– GetMap (mandatory) – to get the map image
– GetFeatureInfo (optional) – to get more information about a particular
location

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– WMS GetCapabilities operation example
Request:
http://localhost:8080/geoserver/wms?request=getcapabilities
Answer:
<Layer queryable="1">
<Name>masdar:2004_DHI_apr</Name>
<Title>2004_DHI_apr</Title>
<Abstract/>
<KeywordList>
<Keyword>GeoTIFF</Keyword>
<Keyword>2004_DHI_apr_geo</Keyword>
</KeywordList>
<CRS>EPSG:4326</CRS>
………

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DEVELOPMENT OF THE APPLICATION
• 3 Components:
– Data source (GeoTIFF images)
– Geospatial data server (Geoserver – implements WMS, SLD and others)
– User (Web Portal + Remote Client)

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PRELIMINARY RESULTS

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PRELIMINARY RESULTS – AVAILABLE DATA
• Yearly and monthly solar maps
– Years:
• 2004 trough 2012 (some not complete)
– Components:
• Diffuse Horizontal Irradiation (DHI)
• Direct Normal Irradiation (DNI)
• Global Horizontal Irradiation (GHI)

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CONCLUSIONS AND FUTURE WORK (1)
• Conclusions:
– Tool very Important for the region
– Provides a good way for users and stakeholders to have a better picture of
the available solar resources in the country
– Technology independent and based on open standards
• Future work:
– Move from individual GeoTIFF images to a geospatial database improving
data management and maintenance
– The dissemination of the data itself for certain types of users need to be
considered

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• Need of authentication mechanism:
– Track the portal usage and get feedbacks from end-users
– Different profiles of users accessing different types of information
• A Technology Simulator is under development (technology layer)
• Add other interesting datasets like the grid network, land
occupation, RE Policies, etc.

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• The Center is also involved in the Development of the Global Atlas
for Wind and Solar resources for IRENA
– Partners in the Global Atlas developer’s team:

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• Global Atlas:
– First version will be launched in January 2013
– UAE solar and wind maps will be included in the Global Atlas
– The Global Atlas will be hosted at Masdar Institute

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Jacinto Estima
jestima@masdar.ac.ae
http://www.linkedin.com/in/jacintoestima

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Dissemination of the UAE solar resource atlas over the web: preliminary results

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