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

• EUMETSAT IASI page
• ESA IASI page
• IASI/Metop-B calendar