Abstract

Abstract This paper investigates the interactions between the various scales of motion and, specifically, the inter-actions between convection and the surface boundary layer in the development of a mesoscale convective system within the Florida Area Cumulus Experiment (FACE) experimental area. Data used in the analysis are from a surface mesonetwork covering a 1500 km2 area which consisted of wind measuring stations, raingages, hygrothermographs, microbarographs and temperature, humidity and pressure transducers. Surface convergence was shown to exist up to 2 h before the development of precipitation over the convergence area within the mesonetwork. Convergence was not being balanced by divergence within the network, which implies mesoscale and/or synoptic-scale forcing. The subsidence warming and drying in the near environment of the mesoscale convective system appeared to play an important role in its evolution from the mature to the dissipating stage. Soundings taken in the near environment of the conv...

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