The UNAVCO GeoEarthscope SAR Archive obtains data files from ESA and the Alaska Satellite Facility (ASF).

January 7, 2009

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.

Mission	Total scenes	scenes from ESA	scenes from ASF		Total frames	frames from ESA	frames from ASF
ERS1	5023	3236	1787		14378	3722	10656
ERS2	19068	12211	6857		35817	13925	21892
Envisat	4384	4384	0		8860	8860	0
RSAT1	10930	0	10930		47421	0	47421
Total	39405	19831	19574		106476	26507	79969

Data Volume in the Archive

Mission	GB from ESA	GB from ASF	Total GB
ERS1	651 GB	1729 GB	2381 GB
ERS2	1948 GB	3445 GB	5394 GB
Envisat	1152 GB	0 GB	1152 GB
RSAT1	0 GB	8394 GB	8394 GB
Total	3751 GB	12568 GB	17321 GB

Archive data volume is 16.5 TB

Scene Maps by Mission (June 4 2009)

ERS1

ERS2

Envisat

Radarsat

(May 23, 2008) postscript version of plot

Google Earth KMZ Files of Archived SAR Scene Footprints

Detail of UNAVCO ERS2 Scenes in Google Earth for southern California

Open these KMZ 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.

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

KMZ files for Google Earth

ERS1 scenes 6146 scenes
ERS2 scenes; 00 to 35 North 2003 scenes
ERS2 scenes; 35 to 40 North 6031 scenes
ERS2 scenes; 40 to 45 North 4549
ERS2 scenes; 45 to 55 North 3258
ERS2 scenes; 55 to 78 North (Alaska) 6673
Envisat scenes
KML files for RSAT:
RSAT1 scenes, 00 to 43 North
RSAT1 scenes, 43 to 58 North
RSAT1 scenes, 65 to 75 North