Orographic effect on heavy rainfall in the east coast of the Korean Peninsula induced by a tropical cyclone

Abstract

The orographic effect on the heavy rainfall in the east coast of the Korean peninsula due to a tropical cyclone was investigated using a mesoscale numerical model. An intense tropical cyclone, Typhoon Rusa, passed over the Korean Peninsula in late August 2002. It made landfall on the south coast of the peninsula and crossed over the central eastern coast. It was found that strong easterly flow over the northern part of Rusa resulted in orographically induced convective rainfall and increased the amount of rainfall that would have occurred over flat terrain.