ANNUAL VARIATION OF AIR-SEA CO2 FLUX AT THE RIVER MOUTH AREA AND ITS FACTORS -ANALYSIS OF AN ECOSYSTEM MODEL, EMAGIN_B.C.-

• SOHMA Akio

  大阪市立大学大学院 工学研究科都市系専攻

• NAKAI Mizuki

  和歌山県庁 有田振興局建設部

• KUBO Atsushi

  静岡大学 理学部地球科学科

• KUWAE Tomohiro

  港湾空港技術研究所

Bibliographic Information

Other Title

• 東京湾河口域における大気-海洋間CO₂フラックスの通年変化とその要因 ～炭酸化学理論を組込んだ生態系モデルによる解析～
• 東京湾河口域における大気-海洋間CO₂フラックスの通年変化とその要因 : 炭酸化学理論を組込んだ生態系モデルによる解析
• トウキョウワン カコウイキ ニ オケル タイキ-カイヨウカン CO ₂ フラックス ノ ツウネン ヘンカ ト ソノ ヨウイン : タンサン カガク リロン オ クミコンダ セイタイケイ モデル ニ ヨル カイセキ

Abstract

 The carbon capture and storage in the coastal shallow ecosystem is a hot topic because of its high potential. The release and uptake of atmospheric CO₂ at the air-sea boundary is an important element consisting the series of carbon capture and storage of the shallow waters. In this study, we applied an ecosystem model, EMAGIN_B.C., considering carbonate chemistry, food-web, and Carbon-Nutrients-Oxygen cycling in the benthic-pelagic coupled system to Tokyo Bay, and analyzed the dynamics of air-sea CO₂ flux and its factors especially focusing on the river mouth area. As the result of the model analysis, CO₂ was released from the ocean to air at the river mouth area on an annual average basis, although CO₂ was taken up at other areas in Tokyo Bay. In addition, the CO₂ release and CO₂ uptake are repeated in the period from the end of April to the end of November. The CO₂ absorption period is thought to be dominated by the consumption of DIC by photosynthesis, and the release period is thought to be dominated by consumption of total alkalinity by nitrification.

Journal

• Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)

  Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 74 (2), I_1267-I_1272, 2018

  Japan Society of Civil Engineers

Keywords

• air-sea CO₂ flux
• climate change
• river mouth
• ecosystem model
• blue carbon

Details

• CRID: 1390282763064270976
• NII Article ID: 130007503955
• NII Article ID: 40021715349
• DOI: 10.2208/kaigan.74.i_1267
• ISSN: 18838944
• ISSN: 18842399
• NDL BIB ID: 029327544
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I029327544
• Web Site: https://www.jstage.jst.go.jp/article/kaigan/74/2/74_I_1267/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed