SA037-09
A comparison of thermospheric FUV radiance and composition from TIMED, GOLD and ICON

Wednesday, 16 December 2020: 09:02
Virtual
Yongliang Zhang1, Larry J Paxton2, Robert K Schaefer2, Richard Eastes3, William E McClintock3 and Thomas J Immel4, (1)Johns Hopkins University, Baltimore, MD, United States, (2)The Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States, (3)University of Colorado, Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, (4)Univ of California, Berkeley, CA, United States
Recorded Presentation
Abstract:
Far Ultraviolet (FUV) imagers on a satellite are used to observe thermospheric and ionospheric parameters, such as density (O, N2, O2, O/N2, H), temperature (neutral and plasma) and auroral precipitation (characteristic energy and flux). The NASA TIMED, GOLD and ICON missions are now making concurrent observations, offering a unique opportunity to monitor the thermospheric variation in O/N2 more comprehensively than is possible individually. However, the FUV radiances and thermospheric products from the missions need to be inter-calibrated or inter-compared. At the time of the writing of this abstract, a preliminary comparison shows that the morphology of the radiances and composition (O/N2) are consistent between GOLD and TIMED/GUVI. But there are differences in their absolute values. The possible sources of the differences will be discussed. This intercomparison is an important and necessary step. By connecting GOLD and ICON measurements to TIMED/GUVI we can create a contiguous record of the behavior of the thermosphere.
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