OSIRIS optical spectrograph and infrared imaging system measures upper-atmosphere composition

Canada's OSIRIS instrument on Sweden's Odin satellite has collected upper-atmosphere measurements since 2001, observing ozone, aerosols and nitrogen dioxide between about 7 and 90 km altitude.

OSIRIS is Canada's optical payload aboard Sweden's Odin satellite and has been collecting atmospheric measurements since 2001. It operates alongside Odin's radiometer to observe composition in the upper atmosphere. The instrument focuses on altitudes between about 7 and 90 km. OSIRIS measures concentrations of ozone, aerosols and nitrogen dioxide and provides data for scientific study of environmental and climate influences. Key facts: - Canada's OSIRIS is the optical spectrograph and infrared imaging payload on Sweden's Odin satellite. - OSIRIS has provided measurements of the upper atmosphere since 2001. - The instrument observes altitudes from about 7 km to 90 km. - It measures concentrations of ozone, aerosols and nitrogen dioxide. - OSIRIS data complement Odin's radiometer in studying atmospheric composition. Summary: OSIRIS' long-running observations contribute to scientific understanding of how natural processes and human activities affect atmospheric composition and climate. Undetermined at this time.