Abstract

Abstract Summer convective regimes over south Florida can be broadly, classified as either sea breeze or disturbed. Sea-breeze circulations develop on one or both coasts on most days with relatively little high cloudiness during the morning hours. The sea breeze strongly modulates the development of deep convection and produces a sharp midafternoon peak in rainfall. Disturbed days, which are characterized by extensive high cloudiness near sunrise, also have a rainfall maximum during the afternoon. Relationships between rainfall and thermodynamic and kinematic variables on disturbed and sca-breeze days have some significant differences. Comparison of rainfall records from the south Florida peninsula with observations from the Florida Keys, where sea-breeze circulations are relatively weak, indicates that the sea breeze accounts for about 35-40% of south Florida peninsula rainfall during the summer months. Area-averaged rainfall and the time variations of peninsula-scale surface divergence and hourly rainfa...

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