Citation

Hyo C. Disaster Adv. 2013; 6(2): 12-20.

Copyright

(Copyright © 2013, Shankar Gargh)

DOI

unavailable

PMID

unavailable

Abstract

The occurrence of cold sea waters induced by cyclogenesis along the eastern coastal sea of Korean peninsula was investigated from March 28 through 30, 2004, using NOAA MCSST sea surface temperature (SST) satellite pictures and a three-dimensional Weather Research and Forecasting Model (WRF)-version 3.3 with a one way-triple techniques. On March 28, westerly wind under a high pressure prevailed in the Gangneung coast and the open sea produced northeastward wind driven current, resulting in the northward intrusion of warm sea waters by the East Korea Warm Current toward the north along the Korean eastern coast. Under this situation, daily mean SST near Gangneung coastal sea and open seas of the East Sea were 10.5 degrees C. On March 29, low pressure with cold front in Bohai Sea between China and Korea produced a cyclonic air flow, which could cause strong southwesterly marine surface wind in the Korean eastern coastal sea near the study area and a strong southeastward wind driven current. This current resulted in both upwelling of deep cold waters towards the sea surface and spreading outward in the coastal sea and the intrusion of cold waters of the North Korea Cold Current from the Korean northeastern coast toward Gangneung city along the coastline. On March 30, as the low pressure of 1013 hPa was more intensified with a decrease of 5 hPa to 1008 hPa in the East Sea (cyclogenesis) could cause the strong intrusion of cold waters from the northeastern coast into the southeastern and its cold front passed by the study area, both northwesterly wind along the coast and westerly wind in the offshore, resulting in a cold sea outbreak of 9 degrees C with a decrease of 1.5 degrees C than one on March 28.