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NSIDC Showcases the State of the Cryosphere
via Google Earth
Lisa Ballagh, Mark Parsons, Ross Swick and Richard ArmstrongMarch 2006
Additional contributors: Mary Jo Brodzik and Clark Judy
36th International Arctic Workshop 2006, INSTAAR, Boulder, CO
Overview
• NSIDC’s State of the Cryosphere• Google Earth overview• Keyhole Markup Language (KML) sample• How to view NSIDC data via Google Earth• State of the Cryosphere in Google Earth
Static and dynamic data
• Conclusion
36th International Arctic Workshop 2006, INSTAAR, Boulder, CO
State of the Cryosphere at NSIDC
Project science lead: Richard Armstrong
State of the Cryosphere: http://nsidc.org/sotc/
Glaciers Permafrost Sea Ice Ice Shelves Snow
Sea Ice Index (February 2006)http://nsidc.org/data/seaice_index
36th International Arctic Workshop 2006, INSTAAR, Boulder, CO
Google Earth Overview
• Google Earth http://earth.google.com
• Viewing capabilities no analysis
• Earth in 3-D• Can add data layers to
Google Earth through the use of the Keyhole Markup Language (KML)
• KMZ file is a compressed KML file Image from Google Earth web page
36th International Arctic Workshop 2006, INSTAAR, Boulder, CO
Google Earth Overview
Keyhole Markup Language (KML): Sample Ground Overlay code:
<GroundOverlay> <name>overlay</name> <color>aaffffff</color> <visibility>1</visibility> <Icon>
<href>http://nsidc.org/cryosphere/images/nise_daily_ece.png</href>
</Icon> <LatLonBox id="snow_and_sea_ice"> <north>90</north> <south>-90</south> <east>180</east> <west>-180</west> <rotation>0</rotation> </LatLonBox></GroundOverlay>
36th International Arctic Workshop 2006, INSTAAR, Boulder, CO
How to view NSIDC data via Google Earth
Steps to view NSIDC data in Google Earth:
1. Download Google Earth:o http://earth.google.com
2. Download KMZ file from NSIDC web pageo http://nsidc.org/sotc/
3. Double click on KMZ file on your Desktop
36th International Arctic Workshop 2006, INSTAAR, Boulder, CO
State of the Cryosphere via Google Earth
Online Glacier Photograph Database (approx. 3,000 glacier images) http://nsidc.org/data/g00472.html
36th International Arctic Workshop 2006, INSTAAR, Boulder, CO
State of the Cryosphere via Google Earth
Glacier Pairs (images contributed by Dr. Bruce F. Molnia, USGS) http://nsidc.org/data/glacier_photo/special_collection.html
36th International Arctic Workshop 2006, INSTAAR, Boulder, CO
State of the Cryosphere via Google EarthGlacier Pairs - http://nsidc.org/data/glacier_photo/special_collection.html
36th International Arctic Workshop 2006, INSTAAR, Boulder, CO
State of the Cryosphere via Google EarthPermafrost data (Circum-Arctic Map of Permafrost
and Ground-Ice Conditions) – Static data set
http://nsidc.org/data/ggd318.html - Brown et al. (1998)
Permafrost Map Legend
36th International Arctic Workshop 2006, INSTAAR, Boulder, CO
State of the Cryosphere via Google EarthSnow and ice data
(Near Real-Time SSM/I EASE-Grid Daily Global Ice Concentration and Snow Extent) http://nsidc.org/data/nise1.html
Dynamically created (file on NSIDC web page updated daily)
DataLegend
36th International Arctic Workshop 2006, INSTAAR, Boulder, CO
State of the Cryosphere via Google Earth
Importance of cryospheric data in Google Earth:
Easy to use (download KMZ file from NSIDC) Spatially view cryospheric data sets Outreach to the public, educators, scientists
and more
36th International Arctic Workshop 2006, INSTAAR, Boulder, CO
Conclusion• Provided an overview
of Google Earth and cryospheric data sets in KML file
• Sample KML code
• Outreach
• Please try it out and send us feedback Email:
[email protected] User Services:
Field, William O. 1931. Columbia Glacier: From the Online glacier photograph database.Boulder, CO: National Snow and Ice Data Center/World Data Center for Glaciology. Digital media.
