Jason-1 is a joint french/american follow-on to the successful TOPEX/Poseidon mission. It provides precise sea surface height measurements (within 2 cm accuracy) in order to support operational oceanography at modelling and forecasting ocean circulation, currents, water temperature,... and to monitor sea level change at climatological scale.

Sea surface height, wave height or wind speed can be measured by the onboard radar altimeter, complemented by additional instruments for improved atmospheric and orbit correction.

Additional Info

  • Mission: Jason-1
  • Agency: NASA, CNES
  • Orbit: polar
  • Altitude: 1336 km
  • Launch date: Wednesday, 12 December 2001
  • Status: operational