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A Study of Teleconnection between the South Asian and East Asian Monsoons: Comparison of Summer Monsoon Precipitation of Nepal and South Korea
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  • A Study of Teleconnection between the South Asian and East Asian Monsoons: Comparison of Summer Monsoon Precipitation of Nepal and South Korea
  • A Study of Teleconnection between the South Asian and East Asian Monsoons: Comparison of Summer Monsoon Precipitation of Nepal and South Korea
저자명
Choi. Ki-Seon,Shrestha. Rijana,Kim. Baek-Jo,Lu. Riyu,Kim. Jeoung-Yun,Park. Ki-Jun,Jung. Ji-Hoon,Nam. Jae-Cheol
간행물명
Journal of environmental science international
권/호정보
2014년|23권 10호|pp.1719-1729 (11 pages)
발행정보
한국환경과학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
서지반출

기타언어초록

This study is carried out in order to bridge the gap to understand the relationships between South Asian and East Asian monsoon systems by comparing the summer (June-September) precipitation of Nepal and South Korea. Summer monsoon precipitation data from Nepal and South Korea during 30 years (1981-2010) are used in this research to investigate the association. NCEP/NCAR reanalysis data are also used to see the nature of large scale phenomena. Statistical applications are used to analyze these data. The analyzed results show that summer monsoon precipitation is higher over Nepal ($1513.98{pm}159.29mm;y^{-1}$) than that of South Korea ($907.80{pm}204.71mm;y^{-1}$) and the wettest period in both the countries is July. However, the coefficient of variation shows that amplitude of interannual variation of summer monsoon over South Korea (22.55%) is larger in comparison to that of Nepal (10.52%). Summer monsoon precipitation of Nepal is found to be significantly correlated to that of South Korea with a correlation coefficient of 0.52 (99% confidence level). Large-scale circulations are studied to further investigate the relationship between the two countries. wind and specific humidity at 850 hPa show a strong westerly from Arabian Sea to BOB and from BOB, wind moves towards Nepal in a northwestward direction during the positive rainfall years. In case of East Asia, strong northward displacement of wind can be observed from Pacific to South Korea and strong anticyclone over the northwestern Pacific Ocean. However, during the negative rainfall years, in the South Asian region we can find weak westerly from the Arabian Sea to BOB, wind is blowing in a southerly direction from Nepal and Bangladesh to BOB.