JpGU-AGU Joint Meeting 2017

講演情報

[EE] ポスター発表

セッション記号 A (大気水圏科学) » A-CG 大気水圏科学複合領域・一般

[A-CG44] [EE] Asian monsoon hydro-climate and water resources research for GEWEX

2017年5月21日(日) 10:45 〜 12:15 ポスター会場 (国際展示場 7ホール)

コンビーナ:鼎 信次郎(東京工業大学 環境・社会理工学院)、樋口 篤志(千葉大学環境リモートセンシング研究センター)、松本 淳(首都大学東京大学院都市環境科学研究科地理環境科学専攻)、横井 覚(海洋研究開発機構)

[ACG44-P08] Seasonal Responses of Pacific Japan Teleconnection on Indo-China Peninsula

*Menaka Revel1Utsumi Nobuyuki 2Sayaka Yoshikawa1Shinjiro Kanae1 (1.Department of Civil and Environmental Engineering, Tokyo Institute of Technology、2.Institute of Industrial Science, The University of Tokyo)

キーワード:Pacific Japan teleconnection, westward-propagating disturbance

Summer monsoon precipitation provides a valuable support to the livelihood of the people live in Southeast Asia where the population density is very high. But monsoon precipitation shows high variation in seasonal and yearly time scales affecting daily life of the people in the regions such Indo-China Peninsula where most of the countries depend on agricultural economy. Tropical cyclones (TCs) and westward-propagation disturbances (WDs) are some of the major summer precipitation providing weather systems of this region. Pacific-Japan (PJ) teleconnection is a meridional teleconnection pattern which dominate the summer in Western North Pacific (WNP). TC locations were identified by TC best track dataset and WDs were detected subjectively using reanalysis dataset. PJ pattern timeseries is represented as 1st principle component seasonal average of relative vorticity at 850 hPa. High interannual and interseasonal variation of occurrence frequency was observed in Indo-China Peninsula which is not understood well enough. TC occurrence and genesis showed increasing trend in PJ pattern whereas it is negative for WDs. TCs and WDs have positive correlation with landfall in Indo-China Peninsula.