Characterization of Sea Breeze Circulation Related Precipitation on the DelMarVa Peninsula

Authors: Daniel Moore*, University of Delaware, Dana Veron, University of Delaware
Topics: Climatology and Meteorology
Keywords: Sea Breeze, Meteorology, Land-Atmosphere Interactions
Session Type: Poster
Day: 4/13/2018
Start / End Time: 10:00 AM / 11:40 AM
Room: Napoleon Foyer/Common St. Corridor, Sheraton, 3rd Floor
Presentation File: Download

Sea breeze circulation (SBC) is a local meteorological phenomenon that occurs when coastal regions experience a significant daytime temperature gradient between the land and sea surfaces, leading to a surface pressure gradient, and causing moist, cool air to move over land, heat, and rise. The DelMarVa peninsula, located between the Chesapeake and Delaware Bays, experiences SBC regularly in the summer, with occasional convergence of multiple sea breeze fronts from the two Bays and adjoining Atlantic coastline. In some cases, there is enough uplift and convection related to the SBC that precipitation will form. We explore the environmental factors that lead to convective precipitation associated with the SBC on the DelMarVa . Using a variety of data sources, including meteorological stations, radiosondes, RADAR, and SODAR, we have developed objective criteria to identify precipitation occurrences related to sea breeze circulations. Characteristics of the associated precipitation events, such as precipitation intensity, spatial coverage, and inland penetration are presented. This characterization is part of a larger study to determine the impact of coastal urbanization on the local summertime climate, in which SBC plays a central role.

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