The Long-Term Variability of East Asian Summer Monsoon from Rainfalls Including Chukwookee Data = 측우기 강우량 자료를 이용한 동아시아 여름몬순 장기변동

다국어 초록 (Multilingual Abstract)

The longest rainfall data in the world including historical Chukwookee data have been analyzed to investigate the long-term climate variability over the East Asian region. Some statistics on Seoul rainfall indicate that summer rainfall amounts in the Chosun period are less than those in the modern period, while the standard deviation of summer rainfall in Chosun period is larger than that in the modern period. The long-term variability of summer rainfall in Korea is characterized by decadal to centennial variations with the prominent period of 60 years and two severe-drought epochs since 1778. The East Asian monsoon is influenced by both convective activities from the tropics and the midlatitudes. The Changma rainfalls are associated with the tropical activities which are connected with El Nino and Southern Oscillation, while the rainfalls in the late summer are related to Eurasian pattern of geopotential height fields in the upper atmosphere. On the other hand, the negative correlation height between East Asian summer monsoon and western North Pacific summer monsoon is enhanced since mid-1990s. This decadal change may be associated with the change in mean fields of atmospheric circulation over the East Asian monsoon region.

목차 (Table of Contents)

• Ⅰ. Introduction
• Ⅱ. Data
• Ⅲ. Comparisons of Rainfall Characteristics
• Ⅳ. Variability of Summer Rainfall
• Ⅴ. Variations of Rainfalls under Monsoon System
• Ⅵ. Summary and Conclusion
• References