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저기압 통과 시 호우사례별 레이더 강우강도와 지상강수량 비교

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Author(s)
이영철
Issued Date
2016
URI
http://dcoll.jejunu.ac.kr/jsp/common/DcLoOrgPer.jsp?sItemId=000000007816
Abstract
The Korean Peninsula located in the mid-latitudes is under the influence
of westerlies. The low pressure trough and the low-pressure approaching
from south-west often pass through the Korean Peninsula. Jeju Island,
positioned to the southwest of the Korean Peninsula, is the first to be
affected by the low pressure trough and/or the low-pressure.
This study was performed to analyze the average annual rainfall for
1981-2010 normal and rainfall and the issuing situations of the special
weather reports for the last five years (2011-2015) in Jeju Island. In this
study, we try to investigate the relationship between the predicted rainfall,
the estimated rainfall by weather radar echo and the observed rainfall and
to understand the characteristics of local rainfall on Jeju Island when the
special weather reports were issued.
Jeju Island is one of the pluvial sites in Korea. Compared with
normals, the average annual rainfall for the last five years were increased
and the number of rainy days were decreased in Jeju Island. During the
last five years, special weather reports for heavy rain were issued totally
288 times and were most frequently issued at a mountainous area.
Based on the data of actual rainfall during the period of special heavy
rain reports, it could be concluded that the predicted rainfall were
overestimated in the case of the actual rainfall of below 50 mm, while
those were underestimated in the case of above 100 mm. In the eastern
part of Jeju Island, there was a relatively good relationship between the
predicted and actual rainfalls. When the special heavy rain reports were
issued, correlation between the predicted and actual rainfalls was very low
in Jeju Island.
It could be found that the very weak correlation between the actual
rainfall and the estimated rainfall by radar echo in this study. Therefore,
it is necessary to improve the conventional equation, Z = 200 R^(1.6), by
considering the geographic features of Jeju Island in order to exactly
estimate the rainfall by using weather radar echo.
Alternative Title
A Comparison of Radar Rainfall Intensity with Ground Rainfall in Heavy Rainfall Cases occurred by Low Pressure System
Department
산업대학원 환경공학과
Advisor
허철구
Awarded Date
2016. 8
Table Of Contents
Summary ⅷ
1. 서 론 1
2. 이론적 고찰 3
2.1. 기상레이더 3
2.1.1. 기상레이더 관측원리 3
2.1.2. 기상레이더 강우량 추정 4
2.1.3. 우리나라 기상레이더 현황 7
2.2. 강우량 예보 9
2.2.1. 수치모델과 강우량 예보 9
2.2.2. 제주도 강우량 예보 14
2.2.3. 기상특보 종류와 기준 16
3. 연구자료 및 방법 24
3.1. 연구자료 24
3.1.1. 연구대상지역 24
3.1.2. 연구대상기간 24
3.1.3. 연구대상자료 25
3.2. 연구방법 25
3.2.1. 강우특성분석 25
3.2.2. 호우특보 적중률과 레이더 추정값 비교 26
4. 결과 및 고찰 27
4.1. 제주도 강우 특성 27
4.1.1. 월별 계절별 강우 특성 27
4.1.2. 지역별 강우특성 31
4.2. 제주도 호우특보 분석 38
4.2.1. 호우현황 38
4.2.2. 종관 기압계 특성 41
4.2.3. 호우시 기상조건 44
4.3. 호우특보 시 기상레이더 추정강우량과 관측값 비교 49
4.3.1. 호우특보 시 기상레이더 강우에코 이동속도 49
4.3.2. 호우특보 시 예상강우량과 지상강우량의 상관관계 분석 51
4.3.3. 레이더 강우강도와 지상강우량의 비교 56
5. 결론 61
참고 문헌 63
Degree
Master
Publisher
제주대학교 산업대학원
Citation
이영철. (2016). 저기압 통과 시 호우사례별 레이더 강우강도와 지상강수량 비교
Type
Dissertation
Appears in Collections:
Graduate School of Industry > Environmental Engineering
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