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광주에서 집중호우를 유발하는 뇌우의 특성 분석

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Author(s)
이혜민
Issued Date
2013
Abstract
Thunderstorm is considered a major phenomenon for the very-short-range forecast because it often involves thunder and lightning or hail, strong wind and heavy rainfall, and rapidly develops in a short time to locally cause a severe damage. Therefore, the study on thunderstorm is important and necessary.
This study analyzed the thunderstorm accompanied by heavy rainfall for the past 10years (2001-2010) in Gwangju
There have been 44 heavy rainfalls for the past 10 years in Gwangju, mostly in July, which is the rainy season. The thunderstorm accompanied by heavy rainfall occurred 29 times in total. Frontal thunderstorms accounted for the greatest number of days because of the seasonal rain front in summer.
The characteristics of the thunderstorm that is accompanied by heavy rainfall in Gwangju are summarized as follows. The air-mass thunderstorm had a higher instability at the time of formation than 6 hours ago, and was likely to form with a small vapor volume and a low vertical wind shear in the bottom layer, and with a high instability and vertical wind shear in the top layer. It had a high precipitation per hour, showing highly intense rainfall in a short duration. In 2003, when the air-mass thunderstorm was frequent, the air pressure distribution was south-high-north-low, the pressure ridge was located over the south area of Korea, and there was a strong northeasterly wind from the East Sea.
The frontal thunderstorm had a higher instability 6 hours before the formation than at the time of formation in terms of CAPE, and was likely to form with a large vapor volume and a high vertical wind shear in the bottom layer, and with a low instability and vertical wind shear in the top layer. In addition, the precipitation duration was long and the daily precipitation was high, showing a continuous precipitation. The analysis results of the satellite image showed that the frontal thunderstorm had higher cloud top temperature and height than air-mass thunderstorm. This was because a very large quantity of latent heat was discharged due to the vapor condensation. In 2009, when the frontal thunderstorm was frequent, the influence of low pressure expanded, and the pressure trough located from the north of China to the East Sea caused much rainfall. In addition, the counterclockwise air current made the northwesterly wind converge.
Alternative Title
An analysis of the Characteristics of Thunderstorms that causes Heavy Rainfall in Gwangju
Alternative Author(s)
Lee Hye-Min
Affiliation
조선대학교 대학원
Department
일반대학원 대기과학과
Advisor
류찬수
Awarded Date
2013-08
Table Of Contents
목 차

List of Tables ⅲ
List of Figures ⅳ
ABSTRACT ⅴ

제1장 서론 1

제2장 자료 및 분석 방법 3

제3장 분석 결과 5
제1절 집중호우 발생 특성 5
1. 집중호우 발생 빈도 5
2. 종관 지상기압계 유형 분류 8
3. 집중호우 시 뇌우 발생 특성 11
제2절 뇌우유형에 따른 기상특성 15
1. 열역학적 분석 15
2. 운동학적 분석 20
3. 강수패턴적 분석 23
4. 대기순환적 분석 27

제4장 결론 및 제언 30

참고문헌 32
Degree
Master
Publisher
조선대학교 대학원
Citation
이혜민. (2013). 광주에서 집중호우를 유발하는 뇌우의 특성 분석.
Type
Dissertation
URI
https://oak.chosun.ac.kr/handle/2020.oak/9891
http://chosun.dcollection.net/common/orgView/200000263948
Appears in Collections:
General Graduate School > 3. Theses(Master)
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