The Stratospheric Wind Interferometer For Transport studies (SWIFT)

The Stratospheric Wind Interferometer For Transport studies (SWIFT) is a Canadian satellite instrument designed to measure wind profiles between 20 and 45 km in the stratosphere with an accuracy of about 5 m s/sup -1/. It simultaneously provides co-located ozone density profiles with an accuracy of /spl sim/5%. SWIFT is a follow on to the highly successful WINDII instrument (WIND Imaging Interferometer) on the UARS satellite. WINDII measures winds in the upper mesosphere and lower thermosphere using Doppler shifts in visible airglow features. SWIFT will measure winds in the stratosphere using Doppler shifts of an ozone thermal emission line in the mid-IR region near 9 /spl mu/m. SWIFT has been selected by NASDA (the Japanese Space Agency) for deployment on their GCOM-A1 mission to be launched in early 2007. We describe the SWIFT science objectives, the SWIFT instrument concept, and SWIFT's synergies with the other instruments on NASDA's GCOM-A1 mission.