Archived SAR Data as of September 29, 2008

The UNAVCO GeoEarthscope SAR Archive obtains data files from ESA and ASF.

Scene and Frame Counts in the Archive

A "scene" is one unbroken sequence of SAR signal, of any length, in a single data file.
The "frame" counts are based on 15 seconds of SAR signal per frame. Most scenes are one or more frames.

Sep. 29. ASF-delivered ERS1 and ERS2 scene counts and sizes are being verified and values shown may be slightly incorrect; values for ESA-delivered files are correct.

Mission	Total scenes	Total frames	frames from ESA	frames from ASF	scenes from ESA	scenes from ASF
ERS1	4275	16671	2876	13905	2489	1399
ERS2	18804	41235	13629	27606	11950	6854
Envisat	2108	7786	7786	0	2108	0
RSAT1	6441	40829	0	40829	0	6441
Total	31628	106,521	24291	82230	16547	15081

Data Volume in the Archive

Mission	GB from ESA	GB from ASF	Total GB
ERS1	511 GB	3288 GB	3799 GB
ERS2	1910 GB	4489 GB	6399 GB
Envisat	814 GB	0 GB	814 GB
RSAT1	0 GB	3481 GB	3481 GB
Total	3235 GB	11258 GB	14493 GB

Archive data volume is 13.83 TB

Scene Maps by Mission

ERS1 scenes (18-9-08)

ERS2 scenes (01-7-08)

RSAT scenes (18-9-08)

Envi   scenes (18-9-08)

Last updated May 23, 2008 postscript version of plot

Google Earth KML Files of Archived SAR Scene Footprints

Detail of UNAVCO ERS2 Scenes in Google Earth for southern California

Open these KML files (links below) in Google Earth to see footprints and labels of archived SAR scene holdings. You can use Google Earth to zoom in to scene locations and archive details. These files are each about 5 to 15 MB in size.
Note: the footprint outlines are only approximations. Do not use for precise determinations.

You can use the GeoEarthscope Archive Search Tool to create smaller KML files of scenes in areas of interest to you.

ERS1 scenes
ERS2 scenes; 00 to 35 North
ERS2 scenes; 35 to 40 North
ERS2 scenes; 40 to 45 North
ERS2 scenes; 45 to 55 North
ERS2 scenes; 55 to 89 North
Envisat scenes
RSAT1 scenes, 55-89 N
RSAT1 scenes, 42-55 N
RSAT1 scenes, 0-42 N