Web Mapping Web Mapping Service Service
Development For Development For DMSP Satellite DMSP Satellite
Data Data Chris Elvidge, NOAA National Chris Elvidge, NOAA National Geophysical Data CenterGeophysical Data Center
Ben Tuttle, Cooperative Institute Ben Tuttle, Cooperative Institute for Research in Environmental for Research in Environmental
Sciences, University of ColoradoSciences, University of Colorado
24th APAN Meeting (Xi'An, China)24th APAN Meeting (Xi'An, China)
Open Geospatial Open Geospatial Consortium, INC. (OGC)Consortium, INC. (OGC)
A non-profit, international, A non-profit, international, voluntary consensus voluntary consensus standards organization that standards organization that is leading the development of is leading the development of standards for geospatial and standards for geospatial and location based services. location based services.
Web Mapping Service Web Mapping Service (WMS)(WMS)
Produce maps of spatially Produce maps of spatially referenced data dynamically referenced data dynamically from geographic informationfrom geographic information
A map is not the data itself A map is not the data itself Generally rendered in a Generally rendered in a
pictorial format such as PNG, pictorial format such as PNG, GIF or JPEGGIF or JPEG
Web Coverage Service Web Coverage Service (WCS)(WCS)
A standard web service for A standard web service for exchanging geospatial dataexchanging geospatial data
Returns the actual data (not Returns the actual data (not a picture as with WMS)a picture as with WMS)
Returns georeferenced data Returns georeferenced data in formats such as GeoTiffin formats such as GeoTiff
GoalsGoals
A scalable method for data A scalable method for data visualization and distributionvisualization and distribution
Easy access to data via Easy access to data via multiple methodsmultiple methods
Access ControlAccess Control Ability for clients to select an Ability for clients to select an
ROIROI
Why OGC Web Service Why OGC Web Service Standards?Standards?
View via Virtual GlobeView via Virtual Globe
View via Web BrowserView via Web Browser
View via Map ViewerView via Map Viewer
View/Download via Custom View/Download via Custom ClientsClients
Connect via Commercial Connect via Commercial and Open Source Software and Open Source Software
PackagesPackages ENVI/IDL support WMS and ENVI/IDL support WMS and
WCSWCS ArcGIS supports WMS (ESRI ArcGIS supports WMS (ESRI
plans future support for WCS)plans future support for WCS) Geographic Data Abstraction Geographic Data Abstraction
Library (GDAL) supports WCSLibrary (GDAL) supports WCS
ArchitectureArchitecture
Products generated with IDL and Products generated with IDL and RubyRuby
Web Services Provided with Web Services Provided with Minnesota MapServer (Open Minnesota MapServer (Open Source) and Ruby (Open Source)Source) and Ruby (Open Source)
Username and password Username and password authenticationauthentication
ProductsProducts
Global Composites 1992-Global Composites 1992-20032003
Daily MosaicsDaily Mosaics
Lunar Cycle CompositesLunar Cycle Composites Average Lights, Average Vis, Cloud Average Lights, Average Vis, Cloud
Free Coverage, Coverage, Percent Free Coverage, Coverage, Percent Lights, Std. Dev. VisLights, Std. Dev. Vis
Gas FlaringGas Flaring
Red 2006Red 2006 Green 2000Green 2000 Blue 1992Blue 1992
Surfing DMSP Gas Flares Through Surfing DMSP Gas Flares Through Google Earth!Google Earth!
Pinning Down the Locations of Flares!Pinning Down the Locations of Flares!
Finding Balls of Fire in the Digital Globe Finding Balls of Fire in the Digital Globe Base Imagery!Base Imagery!
QuestionsQuestions
http://www.ngdc.noaa.gov/dmsp/http://www.ngdc.noaa.gov/dmsp/maps.htmlmaps.html