A103-02
Land-Sea Breezes and the Diurnal Cycle in Rainfall in the MC

Thursday, 10 December 2020: 17:34
Virtual
Chidong Zhang1, Furqon Alfahmi, Furqon Alfahmi3, Yesi Sianturi4, Nelly Florida Riama5, Brandon W Kerns6, Zhaoxia Pu7, Samson M Hagos8, Shuyi Chen9 and Ajda Savarin6,10, (1)NOAA Pacific Marine Environmental Laboratory, Seattle, WA, United States, (2)Indonesian Agency for Meteorology, Climatology and Geophysics, Meteorology, Jakarta, Indonesia, (3)Indonesian Agency for Meteorology, Climatology and Geophysics, Jakarta, Indonesia, (4)Indonesian Agency for Meteorology, Climatology and Geophysics, Center for Research and Development, Jakarta, Indonesia, (5)University of Washington, Atmospheric Sciences, Seattle, WA, United States, (6)University of Utah, Salt Lake City, UT, United States, (7)Pacific Northwest National Laboratory, Richland, WA, United States, (8)University of Washington Seattle Campus, Atmospheric Sciences, Seattle, WA, United States, (9)University of Washington Seattle, Seattle, United States
Recorded Presentation
Abstract:
Land-sea breezes are closely connected with the diurnal cycle in rainfall in the Indo-Pacific Maritime Continent (MC). Most studies on land-sea breezes in the MC have so far been based on numerical simulations. In this study, observations from coastal stations and satellites are used to document the connection between land-sea breezes and the diurnal cycle in rainfall. The results illustrate the extent to which they are synchronized and the extent to which they are independent of each other. Metrics for this connection include the time of wind direction switches vs. the diurnal rainfall onset, seasonal dependence of the diurnal evolution in both wind and rainfall, etc. Observations are compared to high-resolution numerical simulations to assess the capability of the state-of-the-art cloud-allowing models to accurately reproduce the observed connection between land-sea breezes and the diurnal cycle in rainfall.
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