Relationship between climate of the East and Southeast Asia and the air-sea interaction over the tropics in centennial scale

• Project/Area Number: 15K16283
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Geography
• Research Institution: Senshu University
• Principal Investigator: Akasaka Ikumi 専修大学, 文学部, 准教授 (40574140)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000); Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: 降水量 / 季節変化 / 長期変動 / フィリピン / 大気－海洋相互作用 / 長期変動特性 / モンスーン / 季節変化パターン / 長期変化傾向 / ENSO

Outline of Final Research Achievements

To clarify climate changes in the Southeast Asia and its relation to the air-sea interaction in the tropics in centennial scale, this study investigated the onset and withdrawal of the rainy season at Manila for the period 1868-2012 and the seasonal march patterns of rainfall in the Philippines for the period 1951-2012, and showed their long-term variability for the first time. While the interdecadal variability was observed in the onset and withdrawal of the rainy season since the late 19th century, the abnormalities in the seasonal march patterns of rainfall were frequently showed since the 1990s. This is because the recent ENSO (El Nino-Southern Oscillation) greatly influenced the strengths in the subtropical high around the Philippines during March-April and the Asian summer monsoon around the western North Pacific. It is suggested that their changes induced the long-term changes in the seasonal march of rainfall in the Philippines in centennial scale.

Research Products

• [Int'l Joint Research] フィリピン気象天文庁/－/－(フィリピン)
• [Journal Article] Seasonal march patterns of the summer rainy season in the Philippines and their long-term variability since the late twentieth century (2018)
  • Author(s): Akasaka Ikumi、Kubota Hisayuki、Matsumoto Jun、Cayanan Esperanza O.、de Guzman Rosalina G.、Hilario Flaviana D.
  • Journal Title: Progress in Earth and Planetary Science Volume: 5 Issue: 1
  • DOI: 10.1186/s40645-018-0178-5
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] 1881～1882年のマニラにおける気候特性に関する予備的解析 (2017)
  • Author(s): 赤坂郁美，財城真寿美
  • Journal Title: 専修自然科学紀要 Volume: 48 Pages: 19-26
  • Acknowledgement Compliant
• [Presentation] 19世紀後半のマニラにおける風向の日変化特性 (2018)
  • Author(s): 赤坂 郁美，財城 真寿美，松本 淳
  • Organizer: 日本地理学会2018年春季学術大会
• [Presentation] 1897～2016年の夏季における北太平洋高気圧の分布と日本の気温・降水量との関係 (2018)
  • Author(s): 藤宮 健太郎、赤坂郁美
  • Organizer: 日本地理学会2018年春季学術大会
• [Presentation] 19世紀後半～20世紀前半のマニラにおける降水の季節変化特性 (2017)
  • Author(s): 赤坂郁美，財城真寿美，久保田尚之，松本 淳
  • Organizer: 2017年日本地理学会春季学術大会
  • Place of Presentation: 筑波大学（茨城県つくば市）
  • Year and Date: 2017-03-28
• [Presentation] 東アジア・東南アジアにおける気象データのデータレスキューについて (2017)
  • Author(s): 久保田尚之，松本 淳，三上岳彦，財城真寿美，塚原東吾，赤坂郁美，遠藤伸彦，濱田純一，井上知栄，Rob ALLAN，Fiona WILLAMSON
  • Organizer: 2017年日本地理学会春季学術大会
  • Place of Presentation: 筑波大学（茨城県つくば市）
  • Year and Date: 2017-03-28
• [Presentation] Characteristics on the seasonal march of rainfall at Manila for the late 19th century - the early 20th century (2017)
  • Author(s): Akasaka, I., Zaiki, M., Kubota, H., Matsumoto, J.
  • Organizer: Japan Geoscience Union (JpGU)―American Geophysical Union (AGU) Joint Meeting 2017
  • Int'l Joint Research
• [Presentation] Seasonal march of rainfall at Manila for the late 19th century - the early 20th century (2017)
  • Author(s): Akasaka, I., Zaiki, M., Kubota, H., Matsumoto, J.
  • Organizer: Asia Oceania Geosciences Society (AOGS) 14th Annual Meeting
  • Int'l Joint Research
• [Presentation] Japanese rainfall data rescue activities in monsoon Asia (2017)
  • Author(s): Matsumoto, J., Kubota, H., Endo, N., Akasaka, I., Hirano, J., Mikami, T., Zaiki, M., Nishina, J., Hamada, J.-I.., Inoue, T., Hayashi, T., and Terao, T.
  • Organizer: The ACRE-China Wrokshop II
  • Place of Presentation: 香港（中国）
  • Int'l Joint Research
• [Presentation] 20世紀後半以降のフィリピンにおける降水季節変化パターンの長 期変化 (2016)
  • Author(s): 赤坂郁美，久保田尚之，松本 淳，E.O. Cayanan， F. D. Hilario
  • Organizer: 2016年日本地理学会春季学術大会
  • Place of Presentation: 早稲田大学、東京
  • Year and Date: 2016-03-22
• [Presentation] Long-term changes in seasonal change pattern of rainfall in the Philippines since the late 20th century (2016)
  • Author(s): Akasaka, I., Kubota, H., Matsumoto, J., E.O. Cayanan, F. D. Hilario
  • Organizer: The International Science Conference on MAHASRI
  • Place of Presentation: Tokyo Metropolitan University, Hachioji, Japan
  • Year and Date: 2016-03-02
  • Int'l Joint Research
• [Presentation] Data rescue activities in Japan (2016)
  • Author(s): Matsumoto, J., Kubota, H., Kobayashi, S., Yamamoto, H., Endo, N., Hirano, J., Akasaka, I., Zaiki, M., Hamada, J.-I.., Inoue, T., Hayashi, T., and Terao, T.
  • Organizer: ACRE CHINA Wrokshp: Recovery, Digitization and Analysis of Pre-mid-20th Century Climate Observational Data in East Asia
  • Place of Presentation: 北京（中国）
  • Int'l Joint Research
• [Presentation] Long-term variability in seasonal march of rainfall a t Manila since the late of the 19th century reconstructed by data rescue (2015)
  • Author(s): Akasaka, I., Kubota, H., Matsumoto, J., E.O. Cayanan, F. D. Hilario
  • Organizer: The 15th Annual Meeting & 12th European Conference of Applications of Meteorology (ECAM)
  • Place of Presentation: Marinela Hotel, Sofia, Bulgaria
  • Year and Date: 2015-09-09
  • Int'l Joint Research
• [Book] 災害 その記録と記憶（分担執筆：赤坂 郁美「マニラにおける19世紀後半の台風時の気象変化と強雨降水特性の長期変化」pp59-77） (2018)
  • Author(s): 専修大学人文科学研究所編
  • Total Pages: 253
  • Publisher: 専修大学出版局
  • ISBN: 9784881253274
• [Remarks] 専修大学研究者情報データベース（研究者紹介）：赤坂郁美
  • URL: http://reach.acc.senshu-u.ac.jp/Nornir/search.do?type=v01&uid=1208582