|
Mission |
Time Span |
Repeat cycle (days) |
Objective |
|
SeaSat |
July 1978 - October 1978 |
3 |
Study oceanographic phenomena |
|
GeoSat |
Nov 1986 - Jan 1990 |
17; 176 |
Measure sea surface heights |
|
ERS-1 |
July 1991 - June 1996 |
3; 35; 168 |
Measure ice sheet surface elevations over Antartica and Greenland |
|
ERS-2 |
May 1995 - Present(???) |
35 |
Measure ice sheet surface elevations over Antartica and Greenland |
|
GFO (GeoSat Follow-on) |
2001 - present |
17 |
Provide operation altimetry data for the US Navy and NOAA |
|
ENVISAT |
March 2002 - Present |
35 |
Continuation and improvment of ERS satellite measurements |
|
CryoSat |
Launch September 2005 |
369 days(30 day sub-cycle) |
Measure Earth's continental ice sheet thickness. Test prediction of thinning arctic ice due to global warming |
