Vertical Velocity in Oceanic Convection off Tropical Australia.

摘要: Abstract Time series of 1-Hz vertical velocity data collected during aircraft penetrations oceanic cumulonimbus clouds over the western Pacific warm pool as part Equatorial Mesoscale Experiment (EMEX) are analyzed for updraft and downdraft events called cores. An core is defined occurring whenever exceeds 1 m s−1 at least 500 m. A analogously. Over 19 000 km straight level flight legs used in analysis. Five hundred eleven cores 253 included dataset. Core properties summarized distributions average maximum velocity, diameter, mass flux four altitude intervals between 0.2 5.8 km. Distributions approximately lognormal all levels. Examination variation statistics with height suggests a 2 3 km; slightly lower or equal indicated 5 Near freezing level, virtual t...