日本地球惑星科学連合2019年大会

講演情報

[J] ポスター発表

セッション記号 A (大気水圏科学) » A-CG 大気海洋・環境科学複合領域・一般

[A-CG42] 海洋表層-大気間の生物地球化学

2019年5月29日(水) 15:30 〜 17:00 ポスター会場 (幕張メッセ国際展示場 8ホール)

コンビーナ:宮崎 雄三(北海道大学低温科学研究所)、西岡 純(北海道大学低温科学研究所)、鈴木 光次(北海道大学)、岩本 洋子(広島大学 生物圏科学研究科)

[ACG42-P02] Influence of Deposition of Atmospheric Inorganic Nitrogen Compounds to Marine Ecosystem at Bay of Bengal

*竹谷 文一1相田 真希1山地 一代1,2関谷 高志1池田 恒平3橋岡 豪人1本多 牧生1松本 和彦1金谷 有剛1 (1.海洋研究開発機構、2.神戸大学、3.国立環境研究所)

キーワード:沈着、ベンガル湾、海洋生態系、栄養塩

To investigate the influence for the deposition of inorganic nitrogen compounds derived from the continent on the marine ecosystem at Bay of Bengal (BOB) in the North East Indian Ocean, we performed numerical simulations with and without atmospheric deposition of inorganic nitrogen compounds, using a 3-D lower trophic-marine ecosystem model (COCO-NEMURO), coupled with an atmospheric regional chemical transport model (WRF-CMAQ). The monthly mean data of wet and dry deposition of inorganic nitrogen compounds consisted of gases (HNO3 and NH3) and aerosol particles (NO3- and NH4+) at BOB region in 2009 – 2016 produced by WRF-CMAQ were inputted to the COCO-NEMURO as a new nitrogen nutrient supplying process from the atmosphere. The results indicated that monthly average chlorophyll mass concentration at the surface in BOB was significant increase. This study indicates that the supply of atmospheric inorganic nitrogen compounds from continent to the BOB could lead to a high nutrient impact on the marine ecosystem within the subtropical region.