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http://dx.doi.org/10.5467/JKESS.2010.31.4.354

An analysis of Characteristics of Heavy Rainfall Events over Yeongdong Region Associated with Tropopause Folding  

Lee, Hye-Young (Department of Earth Science Education, Kyungpook National University)
Ko, Hye-Young (Global Environment System Research Laboratory, National Institute of Meteorological Research, Korea Meteorological Administration)
Kim, Kyung-Eak (Department of Astronomy and Atmospheric Science, Kyungpook National University)
Yoon, Ill-Hee (Department of Earth Science Education, Kyungpook National University)
Publication Information
Journal of the Korean earth science society / v.31, no.4, 2010 , pp. 354-369 More about this Journal
Abstract
The synoptic and kinematic characteristics of a heavy rainfall that occurred in Gangneung region on 22 to 24 October 2006 were investigated using weather maps, infrared images, AWS observation data and NCEP global final analyses data. The total amount of rainfall observed in the region for the period was 316.5 mm, and the instanteneous maximum wind speed was $63.7m\;s^{-1}$. According to the analysis of weather maps, before the starting of the heavy rainfall, an extratropical low pressure system was developed in the middle region of the Korean Peninsula, and an inverted trough was formed in the northern region of the peninsula. In addition, a jet stream on the upper charts of 300 hPa was located over the Yellow Sea and the southern boundary of the peninsula. A cutoff low in the cyclonic shear side of the upper jet streak, which was linked to an anomaly of isentropic potential vorticity, was developed over the northwestern part of the peninsula. And there are analyzed potential vorticity and wind, time-height cross section of potential vorticity, vertical air motion, maximums of the divergence and convergence and vertical distribution of potential temperature in Gangneung region. The analyzed results of the synoptic conditions and kinematic processes strongly suggest that the tropopause folding made a significant role of initializing the heavy rainfall.
Keywords
heavy rainfall; NCEP global final analyses data; tropopause folding;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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