Steep momentum gradients play a major role in coastal precipitation

phys.org | 6/20/2017 | Staff
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Steep gradients of wind stress and potential temperature enable sustainable nearshore precipitation systems along the western coastal region of Korea, according to Prof. Dong-In Lee, lead scientist at the Group of Environmental Atmospheric Research (GEAR), Pukyong National University, and one of the authors of a recently published study.

"Coastal precipitation, which refers to the occurrence of heavy precipitation in coastal areas, has always been an interesting study area, but it is difficult to prove its cause from the mesoscale point of view, although surface discontinuity is known to play an important role," says the corresponding author of the study, Prof. Lee. "In order to reveal the effect of surface discontinuity on coastal precipitation from the mesoscale perspective, we investigated the process of momentum transportation using the radar-retrieved wind field and a model experiment."

Data - Radars - C-band - Radar - Surface

By using observational data from two S-band radars, C-band radar, and surface weather variables, Prof. Dong-In Lee and his team—a group of researchers from GEAR at Pukyong National University, the New and Renewable Energy Resource Center at the Korea Institute of Energy Research, and the Storm, Flood and Landslide Research Department at the National Research Institute for Earth Science and Disaster Resilience—have had their findings on the causes of coastal precipitation in...
(Excerpt) Read more at: phys.org
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