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