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On ~1613 UT, 3 February 2022 SpaceX launched 49 Starlink satellites from CapeKennedy, Florida into ~210 km altitude orbits where they were to receivesubsequent boosts. We assume that 9 satellites received subsequent boosts andsucceeded in obtaining stable orbits. Several of the Starlink satellitesreentered the atmosphere in the early morning hours of 7 February. Two magneticstorms occurred one with a peak SYM-H intensity of -80 nT at ~1056 UT on 3February and a second with a SYM-H peak intensity of -71 nT on ~2059 UT 4February. The ESA polar orbiting Swarm B satellite data show that enhancedstorm-time air mass densities occurred in dayside equatorial and midlatitudesat ~500 km altitude with a density peak increase of ~50% higher than quiet timedaytime values. The nightside density peak increase was ~100-190% compared toquiet time nighttime values. Prompt penetration electric fields causing ExBuplift of the dayside F-region O+ ions and the downward convection of thenightside O+ ions can explain the Swarm B day-night asymmetry during themagnetic storm main phases and are the probable cause of the losses of theStarlink satellites. Our scenario for the 40 Starlink satellite losses isdifferent from Dang et al. (2022) who assumed that the Starlink satellitesreceived no boosts at 210 km altitude.

The Possible Cause of the 40 SpaceX Starlink Satellite Losses in  February 2022: Prompt Penetrating Electric Fields and the Dayside Equatorial  and Midlatitude Ionospheric Convective Uplift