1. AmericaView REDDnet? Geospatial Data Delivery P.R. Blackwell
Stephen F. Austin State University

2. AmericaView/REDDnet What is AmericaView? Why do we need REDDnet?
The AmericaView/REDDnet Demonstration Project
Why Do We Care?
Future Directions

3. AmericaView is:
a national program promoting satellite remote sensing technology.
a organization of state-based, academically lead, consortia.
mandated to archive and distribute satellite remote sensing data.

4. Why Do We Need Faster Access to Data?

6. Emergency Response Why are we obsessed with faster downloads?
In the aftermath of Hurricanes Katrina and Rita, the US Army Corps of Engineers commissioned post-event aerial ortho-imagery for certain areas affected by the storms. This acquisition generated nearly a terabyte of data desperately needed by researchers and individuals working on mitigation issues. Distributing these data in a timely manner was problematic, often resulting in road trips with boxes of CDs.
The difference between a minute and a half and 13 seconds may be trivial when dealing with a single 250Mb landsat scene, but it takes on great importance when trying to push terabyte datasets in times of emergency.

7. AmericaView/REDDnet Demonstration Project

8. IBP Depots IBP IBP REDDnet Depots Depots IBP L-Store IBP Depots IBP
Under the Covers
Server
Discovery (GloVis)
REDDnet
IBP
Depots
IBP
Depots
IBP
Depots
REDDnet
L-Store
IBP
Depots
Scene List
IBP
Depots
IBP
Depots
Applet
Launcher
LS Request
File Listing
Applet &
Scene List
Client
Exnoder
Downloader
File List
User Interface
(Format Selector)
File Pathnames

9. Why do we care?

10. Start! 13 Seconds! Done! Landsat ETM+ Download
Alaska features one of the first AmericaView GloVis installations and features a very nice shopping chart utility and package-on-demand. Users receive an with the files are ready for download.
California is a non-GloVis distribution featuring three mirror sites.
Indiana is a GloVis site offering multispectral, Thermal and Panchromatic bundles. Test uses multispectral
Wisconsin’s GloVis instance was offline for maintenance during the testing period, so their very nice path/row interface was used. Wisconsin offers compressed tar files of pan, thermal, and multispectral band combinations.
Arkansas’s CAST system was one of the fastest using pre-packaged and compressed bundles and good download speed.
Texas packages on the fly, drawing data from the same servers that are used for local access to the data. (Note: testing of Texas download was done in Knoxville Tennessee.)
AmericaView REDDnet uses a standard GloVis interface. The order process hands off to a Java Application that retrieves available data offering for the selected scene and allows the user to select the file(s) desired and a destination directory. A Java applet is downloaded to the client along with the L-Store path to the exnode. The applet then downloads the data…
In less than 15 seconds!
Done!

11. See it Now!

12. References Technical Background: GloVis Websites
LoCI Lab –
L-Store –
REDDnet –
GloVis
USGS GloVis –
TexasView GloVis –
Websites
Columbia Regional Geospatial Service Center –
TexasView –
AmericaView/REDDnet –
Internet2:Geospatial SIG --

13. Columbia Center Technical Team
PR Blackwell – Team Lead Mike Coffee – Database Specialist Diana Gunter – Geospatial Programmer Shane Jenson – World Wide Web Specialist Jim Bills – Systems Administration Johnny Brown – Geospatial Specialist

14. Supported by: NSF Grant PHY-0619847
AmericaView Remote Sensing Consortium
Columbia Regional Geospatial Service Center
USDA NRI Grant
The T. L. L. Temple Foundation

15. Thank you!