IASI instrument

The Infrared Atmospheric Sounding Interferometer (IASI) represents a significant advance in the quality of the measurements injected into meteorological models. It uses original technologies for a new European contribution to polar meteorology. The concept of IASI is based on the spectral decomposition of thermal heat emission from the Earth, performed with a Michelson interferometer.

IASI factsheet

  • Spectral range: 3.7-15.5 µm
  • Swath: ±1066 km
  • Sampling at nadir: 18 km
  • Earth view pixels per scan: two rows of 60 pixels each
  • Dimensions: 1.2 m x 1.1 m x 1.3 m
  • Weight: 236 kg
  • Data rate: 1.5 Mbit/s

IASI links

IASI instrument