“…Empirical and theoretical analyses indicate that microbursts are an important loss process since they can substantially deplete the radiation belt electrons on the order of 1 day (e.g., Breneman et al, ; Lorentzen et al, ; O'Brien et al, ; Thorne et al, ). Previously, microbursts have been observed in the upper atmosphere in the form of bremsstrahlung X‐rays (e.g., Anderson et al, ; Parks, ; Woodger et al, ) and directly in low Earth orbit (LEO; e.g., Blake et al, ; Blum et al, ; Breneman et al, ; Crew et al, ; Lee et al, , ; Lorentzen et al, , ; Mozer et al, ; Nakamura et al, , ; O'Brien et al, , ).…”