Abstract
AbstractThe Special Sensor Ultraviolet Limb Imager (SSULI) instruments are ultraviolet limb scanning sensors flying on the United States Air Force Defense Meteorological Satellite Program Block 5D‐3 satellites. The SSULIs cover the 800–1700 Å wavelength range at 18 Å spectral resolution. This wavelength range contains spectral signatures of all the dominant neutral and ionized species in the thermosphere and F region ionosphere. The instruments view ahead of the spacecraft and operate as limb imagers covering the 100–750 km altitude range at 10–15 km resolution with a 90 s scan cadence. We describe these instruments and summarize their calibration and on‐orbit performance. Day‐to‐day variability of the nighttime ionosphere at low latitudes and longer‐term variability of the global mean exospheric temperature are highlighted.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
