Project Team
Students
Mary Bennett
Meteorology and Atmospheric Sciences
Berks, University Park
Faculty Mentors
Xingchao Chen
University Park
Meteorology and Atmospheric Sciences
Project
Project Video
Project Abstract
The Maritime Continent is among the rainiest regions globally, with frequent heavy precipitation, particularly near coastal areas. This study examines the diurnal propagation of rainfall off the coast of Sumatra during the spring season (March, April, May) using 10 years of high-resolution satellite observations and cloud tracking methods. The results suggested diurnal rainfall over the region is dominated by mesoscale convective systems. ERA5 reanalysis data and self-organizing map (SOM) techniques were employed to categorize days based on their vertical wind profiles. Hovmöller diagrams were then generated to illustrate the offshore propagation of precipitation. Surprisingly, days with strong low-level onshore winds exhibited significant offshore propagation, while days with weak low-level onshore winds showed limited offshore propagation. The study also explores the environmental factors influencing these diurnal propagation patterns.
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