JpGU-AGU Joint Meeting 2020

講演情報

[E] ポスター発表

セッション記号 A (大気水圏科学) » A-AS 大気科学・気象学・大気環境

[A-AS02] 東アジアの異常天候・都市災害と気候変動との関わり

コンビーナ:Masaru Inatsu(北海道大学大学院理学研究院)、高薮 縁(東京大学 大気海洋研究所)

[AAS02-P01] Drawing Storylines of Extraordinary Weather Phenomena around Japan in Changing Climate

*高薮 縁1中村 尚2堀之内 武3仲江川 敏之4江守 正多5 (1.東京大学 大気海洋研究所、2.東京大学先端技術研究センター、3.北海道大学、4.気象庁気象研究所、5.国立環境研究所)

キーワード:ストーリーライン、気候変動、異常天候、CMIP6

Frequent occurrences of extraordinary weather events in recent years have disclosed the vulnerability of our society to unexperienced kinds of extreme events. Increase of such extreme weather events are attributed to the global warming. Since we expect to face even further increases of extreme events in future, it is necessary to help policy makers for making adequate adaptation plans. To this end, an essential point is to estimate the range of uncertainty for future changes of phenomena, and to adequately convey such information to the policy makers.

In this talk, we will introduce our project supported by the Environment Research and Technology Development Fund (2-1904). In this research, we employ the Storyline method, which is introduced to make physical explanations why and how extraordinary weather phenomena are affected by the global climate change. We especially focus on local phenomena around Japan, such as extreme rainfall, extreme droughts, heat waves, etc.

In our project, we study how extraordinary weather phenomena are linked to large-scale dynamics. We also discuss how to choose climate models from the CMIP5 and CMIP6 model ensembles, in order to represent a wide range of uncertainty in future change. Finally, we aim to extract small numbers of climate storylines which represent the possible range in future changes of extreme weather phenomena around Japan and their connections to changes in large-scale atmospheric condition.