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최근 10년간 한반도에서 관측된 봄철 황사의 특성 분석

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Author(s)
강미선
Issued Date
2012
Abstract
The Asian dust that stays over the Korea peninsula for a long time shows a high density in ist concentration. As the Asian dust duration time increases, its negative effects increase on the living environment. Therefore, it is important to analyze the relationship between the synoptic condition and the Asian dust duration time in Korea and to review with previous studies on the Asian dust duration time. In this study, for the Asian dust cases for the recent 10 years (2002-2011), the relationship between the synoptic system and duration time in the Asian dust was analyzed via the analysis of the average hourly particulate matter (PM10) density and surface/upper air charts (850, 500 and 300 hPa) and satellite images, classifying the Asian dust cases into a long-period and a short-period case and verifing previous studies on the duration time.
Asian dust was observed 67 times and for 129 days in spring for the recent 10 years in Korea. Their average duration was approximately two days (1.9 days). Asian dust was observed 28 times in March, 25 times in April and 14 times in May. Unlike in the period from 1981 to 2010, in which the average Asian dust days in April showed highest as 2.4 days (47%), the average number of Asian dust days of the recent 10 years (2002~2011) was greatest in March (2 days; 35%). result of recently 10 years average dates showed that Asian dust days has recently increased.
The Asian dust affected the Korea peninsula originated 16 times from Manchuria, and 51 times from the Gobi Desert and inner Mongolia. No Asian dust from Manchuria affected Korea peninsula for the past 10 years (1983 – 1993), but its occurrence from Manchuria has recently increased.
The duration of three days or more (>48 h) was defined as a long-period case (12 times), and the duration of less than one day was defined as a short-period case (26 times). In the long-period cases, Asian dust appeared in March, April and May for 6, 3 and 3 times with 23, 11 and 10 Asian dust days, respectively. In the short-period cases, Asian dust appeared 11, 10 and 5 times with 11, 10 and 5 Asian dust days, respectively. The total average particulate matter (PM10) values for the long and short-period cases were 145 ㎍m-3and 84㎍m-3, respectively. In the long-period cases, all of the 12 cases (100%) rose from the Gobi Desert and inner Mongolia. In the short-period cases, 13 cases (50%) rose from Manchuria, There were no Asian dust events from Manshuria and Loess Pasteau that affected Korea peninsula in the long-period cases. and 13 cases (50%), from the Gobi Desert and inner Mongolia. When the Asian dust rises from the Gobi Desert and inner Mongolia and comes to Korea via the Gulf of Balhae, it can affect Korea for over three days (>48 h). Because Manchuria and Korean Peninsula are relatively close to each other, the Asian dust originating from Manchuria can affect Korea in one day (<24 h). These must be considered in forecasting Asian dust.
In the 12 long-period cases, the numbers of pressure troughs that passed over the Korean Peninsula were one, two and three in three, six and three cases, respectively. In the short-period cases, only one pressure trough passed through in all of the 26 times. On average, two pressure troughs passed in 3.67 days in the long-period cases, while one pressure trough passed in a day in the short-period cases. This indicated that the pressure trough moved faster in the short-period cases than in the long-period cases.
The study results of both the long- and short-period cases coincided with those of Chun et al. (2001a) in that the crossing of the pressure gradient and temperature gradient causes the baroclinic instability and thus the Asian dust, and with those of Yun (1990) and Jeon (1991) in that the west․northwest wind on the 850 hPa plane with a velocity of 15-25ms-1 delivers the Asian dust to Korea. In the long-period cases, the study results coincided with those of Jeon(1999) in that the southward movement of the cold core in the upper layer is clearly seen in the delivery of Asian dust.
Alternative Title
Analysis of the Characteristics of Asian Dust Observed in Spring Time for the Recent 10 Years(2002-2011) in Korea Peninsula
Alternative Author(s)
Kang, Mi-sun
Affiliation
조선대학교 일반대학원 대기과학과
Department
일반대학원 대기과학과
Advisor
류찬수
Awarded Date
2012-08
Table Of Contents
ABSTRACT ⅶ

제1장 서 론 1

제2장 자료 및 방법 4

제3장 황사 사례 관측 현황 6
제1절 황사 사례 관측 현황 6
제2절 황사 사례 발원지 9
제3절 봄철 장·단기 황사 사례 선정 11
제4절 봄철 장·단기 황사 사례 관측 현황 13
제5절 장·단기 황사 사례 발원지 22

제4장 봄철 장· 단기 황사 사례의 특성 분석 25
제1절 지상 미세먼지(PM10) 농도 분석 25
1. 장기사례 분석 (2011년 5월 1일 - 4일) 25
2. 단기사례 분석 (2009년 3월 14일) 27

제2절 종관 분석 29
1. 황사 일기도 분석 29
가. 장기사례 분석 (2011년 5월 1일 - 4일) 29
나. 단기사례 분석 (2009년 3월 14일) 32
2. 상층 일기도 분석 34
가. 장기사례 분석 (2011년 5월 1일 - 4일) 34
나. 단기사례 분석 (2009년 3월 14일) 43
3. 850 hPa 면의 기류 분석 48
가. 장기사례 분석 (2011년 5월 1일 - 4일) 48
나. 단기사례 분석 (2009년 3월 14일) 48
제3절 위성영상으로 본 황사 수평분포 분석 51
1. 장기사례 분석 (2011년 5월 1일 - 4일) 51
2. 단기사례 분석 (2009년 3월 14일) 53

제5장 결론 54

참고문헌 58
Degree
Master
Publisher
조선대학교 대학원
Citation
강미선. (2012). 최근 10년간 한반도에서 관측된 봄철 황사의 특성 분석.
Type
Dissertation
URI
https://oak.chosun.ac.kr/handle/2020.oak/9621
http://chosun.dcollection.net/common/orgView/200000263475
Appears in Collections:
General Graduate School > 3. Theses(Master)
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