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Topex / Poseidon

Topex / Poseidon

An Earth satellite designed to measure ocean surface topography with unprecedented accuracy, Topex/Poseidon spent 13-plus years in orbit improving understanding of ocean circulation and its impact on global climate.

Visit Mission Website

Mission Statistics

Launch Date

Aug. 10, 1992

Type

Orbiter

Target

Earth

Status

Past

About the mission

An Earth satellite designed to measure ocean surface topography with unprecedented accuracy, Topex/Poseidon spent 13-plus years in orbit improving understanding of ocean circulation and its impact on global climate. In addition to producing the first global views of seasonal current changes, it enabled scientists to forecast and better understand the El Nino phenomenon of the late 1990s.

Topex/Poseidon was a joint project between NASA and France's National Center for Space Studies, or CNES.

Instruments

  • Radar altimeter
  • Microwave radiometer
  • Laser Retroreflector Array (LRA)
  • Global Positioning System Demonstration Receiver (GPSDR)
  • Doppler Orbitography Radiopositioning Integrated by Satellite (DORIS)
  • Single-Frequency Poseidon Altimeter (SSALT)

More about Earth, Climate Change and Weather

News.

US-Indian Space Mission Maps Extreme Subsidence in Mexico City

Image.

US-Indian Spacecraft Captures Mexico City Subsidence

Image.

US-Indian Spacecraft Captures Mexico City Subsidence

Infographic.

Pi in the Sky: A Pi Day Infographic

Image.

NISAR Views Mount St. Helens

Image.

NISAR’s View of Mount Rainier

Image.

NISAR Views Mount St. Helens

Image.

NISAR Views Mount St. Helens

Image.

NISAR’s View of Mount Rainier

Image.

NISAR’s View of Mount Rainier

  • › Mission Website
  • › Press Kit
  • › Fact Sheet
  • › Ocean Surface Topography Website
  • › Topex/Poseidon Information on National Space Science Data Center

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