Study of the role of transient atmospheric disturbances in the climate system over the tropics

• Project/Area Number: 25400460
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: Hokkaido University
• Principal Investigator: Horinouchi Takeshi 北海道大学, 地球環境科学研究科(研究院), 准教授 (50314266)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 大気波動 / 熱帯気象 / 総観気象 / 気候システム / 降水 / 水・エネルギー輸送

Outline of Final Research Achievements

This study was conducted to elucidate the roles of transient atmospheric disturbances in the climate system over the tropics to subtropics. Relationship among convectively coupled mixed Rossby-gravity waves, seasonal precipitation and sea surface temperature was elucidated. It was shown that summertime synoptic-scale Rossby waves that propagate along subtropical jet modulate water-vapor transport and induce vertical motion to form precipitation belts that co-vary with the jet. The findings will be useful to evaluate climate prediction.

Research Products

• [Journal Article] Response of the Baiu rainband to northwest Pacific SST anomalies and its impact on atmospheric circulation (2016)
  • Author(s): Matsumura, S., T. Horinouchi, S. Sugimoto, and T. Sato
  • Journal Title: J. Climate. Volume: 29 Issue: 8 Pages: 3075-3093
  • DOI: 10.1175/jcli-d-15-0691.1
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Influence of Upper Tropospheric Disturbances on the Synoptic Variability of Precipitation and Moisture Transport over Summertime East Asia and the Northwestern Pacific (2014)
  • Author(s): Horinouchi, T.
  • Journal Title: Journal of the Meteorological Society of Japan. Ser. II Volume: 92 Issue: 6 Pages: 519-541
  • DOI: 10.2151/jmsj.2014-602
  • NAID: 130004719030
  • ISSN: 0026-1165, 2186-9057
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Presentation] 夏季の大陸東岸から洋上にかけての降水帯とその日々の分布の概念モデル (2016)
  • Author(s): 堀之内武
  • Organizer: 日本気象学会2016年春季大会
  • Place of Presentation: 国立オリンピック青少年総合センター（東京都渋谷区）
  • Year and Date: 2016-05-18
• [Presentation] 夏季の大陸東岸から洋上にかけての 降水帯の最小構成概念モデル：気候学的理解から日々の降水帯の構造まで (2015)
  • Author(s): 堀之内武
  • Organizer: 「グローバルスケールとメソスケールを貫く気象学」研究集会
  • Place of Presentation: 北海道大学（北海道札幌市）
  • Year and Date: 2015-12-28
• [Presentation] Influence of Upper Tropospheric Disturbances on the Synoptic Variability of Moisture Transport and Precipitation over Summertime East Asia and the Northwestern Pacific (2015)
  • Author(s): Horinouchi T.
  • Organizer: Third International Workshop on “Studies on future climate projection of the Asian region utilizing the CMIP5 multi-model ensemble data
  • Place of Presentation: TKPガーデンシティ御茶ノ水（東京都千代田区）
  • Year and Date: 2015-03-27
  • Invited
• [Presentation] Synoptic Variability of Moisture Transport and Precipitation over Summertime East Asia and the Northwestern Pacific in Association with Upper Tropospheric Disturbances (2014)
  • Author(s): Horinouchi T.
  • Organizer: 2014 AGU fall meeting
  • Place of Presentation: Moscone Center（San Francisco,USA）
  • Year and Date: 2014-12-14 – 2014-12-16
• [Presentation] 東アジア・北西太平洋における夏の上層渦位と降水の関係性 (2014)
  • Author(s): 林歩夢
  • Organizer: 日本気象学会2014年秋季大会
  • Place of Presentation: 福岡国際会議場（福岡県福岡市）
  • Year and Date: 2014-10-21 – 2014-10-23
• [Presentation] Influence of Upper Tropospheric Disturbances on the Synoptic Variability of Moisture Transport and Precipitation over Summertime East Asia and the Northwestern Pacific (2014)
  • Author(s): Horinouchi T.
  • Organizer: AOGS 2014
  • Place of Presentation: ロイトン札幌（北海道札幌市）
  • Year and Date: 2014-07-28 – 2014-08-01
• [Presentation] 夏季の東アジア・北西太平洋域の総観規模変動，水蒸気輸送，降水への上部対流圏の渦位擾乱の影響 (2014)
  • Author(s): 堀之内武
  • Organizer: 日本気象学会2014年春季大会
  • Place of Presentation: 横浜市開港記念会館（神奈川県横浜市）
  • Year and Date: 2014-05-21 – 2014-05-24
• [Presentation] 夏季の東アジア・北西太平洋域の総観規模変動，水蒸気輸送，降水への上部対流圏の渦位擾乱の影響 (2014)
  • Author(s): 堀之内武
  • Organizer: 日本気象学会
  • Place of Presentation: 横浜 開港記念会館
• [Presentation] 赤道付近の季節平均降水量への混合Rossby重力波の影響 (2013)
  • Author(s): 堀之内武
  • Organizer: 日本気象学会
  • Place of Presentation: 東京 国立オリンピック記念青少年総合センター