[A-CG33] 熱帯におけるマルチスケール大気海洋相互作用

2023年5月23日(火) 13:45 〜 15:15 104 (幕張メッセ国際会議場)

コンビーナ:堀井孝憲(国立研究開発法人海洋研究開発機構)、釜江陽一(筑波大学生命環境系)、清木亜矢子(海洋研究開発機構)、時長宏樹(九州大学応用力学研究所)、座長:堀井孝憲(国立研究開発法人海洋研究開発機構)、時長宏樹(九州大学応用力学研究所)

Tropical ocean-atmosphere interactions exert a significant impact on regional and global climate on a broad range of spatio-temporal scales. Since the 1980s, in-situ and satellite observations, reanalysis products, and advancements in climate modeling have facilitated the analysis of various aspects of variability in the tropical ocean basins. This includes variability patterns on intraseasonal (e.g., MJO), interannual (e.g., ENSO, IOD, and Atlantic Nino) and decadal (e.g., IPO) timescales, and their linkages with tropical (e.g., monsoons) and extratropical (e.g., storm track) climate. Recent studies have revealed new aspects of tropical ocean-atmosphere interaction, such as the role of salinity and its influence on tropical cyclone intensification. Others have highlighted the coupling among the tropical Pacific, Indian Ocean, and Atlantic, and its role in seasonal prediction of the Asian summer monsoon and decadal ocean variability such as the so-called global warming "hiatus". Long-term change in the Pacific Walker circulation has been recapturing attention because it is intricately linked to the fate of ENSO under global warming. Moreover, changes in the Walker circulation can alter the regional patterns of climate change and thereby modulate climate feedbacks and the sensitivity to radiative forcing.
Climate, its variability, and its long-term change under global warming are shaped by a variety of processes that are mutually interrelated. To examine these challenging issues from various perspectives and foster understanding of the role of tropical ocean-atmosphere interaction in the climate system, this session offers a forum to discuss recent progress in observational, modeling and theoretical studies of multi-scale ocean-atmosphere interaction in the tropics.

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Introduction (13:45 〜 13:50)

13:50 〜 14:10

[ACG33-01] Tropical variability under greenhouse warming

★招待講演

*Cai Wenju¹ (1.CSIRO Environment, 107 Station Street, Aspendale, Victoria 3195, Australia)

14:10 〜 14:30

[ACG33-02] Multi-year ENSO: impact, mechanisms, and predictability

★Invited Papers

*岩切友希^1,2、渡部雅浩¹ (1.東京大学大気海洋研究所、2.気象研究所)

14:30 〜 14:45

[ACG33-03] The extratropical pacemaker effect on Pacific Walker circulation trend

*戸田賢希¹、宮本歩、小坂優¹、渡部雅浩² (1.東京大学先端科学技術研究センター、2.東京大学大気海洋研究所)

14:45 〜 15:00

[ACG33-04] Pacific Meridional Mode-Equatorial Pacific Interaction Linked by Aleutian Low Variability

*Yu Zhang^1,2、Shi-Yun Yu¹、Dillon J. Amaya³、Yu Kosaka⁴、Malte F. Stuecker⁵、Jun-Chao Yang^1,2、Xiaopei Lin^1,2、Lei Fan¹ (1.Physical Oceanography Laboratory, Ocean Univ. of China、2.Lanshao Laboratory, Qingdao, China、3.Physical Science Laboratory, ESRL, NOAA、4.RCAST, The Univ. of Tokyo、5.Univ. of Hawaiʻi at Mānoa)

15:00 〜 15:15

[ACG33-05] Toward disentangling the Pacific Meridional Mode from tropical Pacific variability

*Ingo Richter¹、Malte Stuecker²、Naoya Takahashi²、Niklas Schneider² (1.JAMSTEC Japan Agency for Marine-Earth Science and Technology、2.IPRC, University of Hawaii)