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Thermospheric conditions associated with the loss of 40 Starlink satellites


AuthorZhang, Yongliang; Paxton, Larry; Schaefer, Robert; Swartz, William;
Keywords
AbstractWe analyzed far ultraviolet data from Defense Meteorological Satellite Program (DMSP)/Special Sensor Ultraviolet Spectrographic Imager (SSUSI) and Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED)/Global Ultraviolet Imager (GUVI) and found significant changes in the thermospheric density and composition during the 3–5 February 2022 storm when 40 Starlink satellites started to re-enter the atmosphere associated with increased neutral drag at an altitude around 210 km. The standard NRLMSISE-00 model predicts only ∼5\% increase in neutral density at 210 km. TIMED/GUVI observations showed a clear increase in the thermospheric N2/O column density ratio and an increase in the nitric oxide (NO) column density, indicating high thermospheric density, and temperature
Year of Publication2022
JournalSpace Weather
Volume20
Number of Pagese2022SW003168
Section
Date Published
ISBN
URL
DOI10.1029/2022SW003168