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Wind, Rain, and the Closed to Open Cell Transition in Subtropical Marine Stratocumulus
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2022
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Source: Journal of Geophysical Research: Atmospheres, 127(20)
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Journal Title:Journal of Geophysical Research: Atmospheres
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Description:Lagrangian transitions in mesoscale cellular convective (MCC) clouds beginning as closed cell MCC and transitioning to open cells or disorganized but cellular MCC are explored on timescales from 12 to 72 hr. Potential drivers of MCC transitions are shown to act on multiple timescales. Closed-to-open MCC cloud transitions are preceded by strong surface winds and large moisture fluxes at lead times of up to 72 hr; and by high cloud water content, reduced cloud drop concentrations, and intense rain rates at lead times of 12–36 hr. The relationship between intense rain and the formation of open cells is consistent with a cold pool convergence mechanism. A Lagrangian analysis shows that anomalously strong surface winds are associated with higher
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Source:Journal of Geophysical Research: Atmospheres, 127(20)
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ISSN:2169-897X;2169-8996;
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Rights Information:Other
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