日本地球惑星科学連合2018年大会

講演情報

[JJ] 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-CG40] 陸域生態系の物質循環

2018年5月24日(木) 15:30 〜 17:00 ポスター会場 (幕張メッセ国際展示場 7ホール)

コンビーナ:加藤 知道(北海道大学農学研究院)、平野 高司(北海道大学大学院農学研究院)、佐藤 永(海洋研究開発機構 地球表層物質循環研究分野、共同)、平田 竜一(国立環境研究所)

[ACG40-P11] Plans for developing an Earth system model with CH4 dynamics

*井上 忠雄1羽島 知洋1伊藤 昭彦2 (1.国立研究開発法人海洋研究開発機構、2.国立研究開発法人国立環境研究所)

キーワード:気候変動、メタン、地球システムモデル

Methane (CH4) is one of the important GHGs for climate prediction due to its relatively high radiative forcing next to that of CO2, and now it is necessary to pay more attention to global CH4 dynamics after Paris agreement. Under the control of CO2 emission to keep a global temperature rise this century below 2 degrees Celsius above pre-industrial level, concentration of CH4 in the atmosphere will be more influential to climate change. Furthermore, the atmospheric life time of CH4 is around 9 years, it could be a good target for climate change mitigation. However, current Earth system models (ESMs) cannot project CH4 concentration with fully coupled manner: some models can predict atmospheric CH4 concentration but its predicted concentration is not based on the anthropogenic/natural CH4 emission under climate interactions. In order to make climate projection with fully coupled CH4 processes, we have started to couple CH4 dynamics into our ESM, by introducing atmospheric chemistry model and the terrestrial CH4 emission scheme into an ESM. In this presentation, brief introduction and the progress of our ESM development will be made, and plans for application of the ESM to CH4-related simulations will be shown.