PREDICTION OF SPATIAL AND TEMPORAL VARIATION OF AIR-SEA CO₂ FLUX DURING SPRING FLOOD IN LAKE KOMUKE

• TADA Kazufumi

  中電技術コンサルタント（株）沿岸整備部

• NAKAYAMA Keisuke

  神戸大学大学院 工学研究科市民工学専攻

• TOKORO Tatsuki

  （国研）港湾空港技術研究所 沿岸環境研究グループ

• WATANABE Kenta

  （国研）港湾空港技術研究所 沿岸環境研究グループ

• KUWAE Tomohiro

  （国研）港湾空港技術研究所 沿岸環境研究グループ

Bibliographic Information

Other Title

• 春季出水期におけるコムケ湖の水質変動解析と大気－海水間CO₂フラックスの推定

Abstract

 In Lake Komuke, which is an important lagoon as carbon sinks, we analyzed previous data and found that salinity and biological metabolism (e.g., photosynthesis and respiration as shown by ΔDIC) are the two key environmental factors affecting CO₂ fugacity in the water column. Further, the data were analyzed using an approximate expression and the numerical computations using three-dimensional numerical model during spring flood to predict spatial and temporal variation of air-sea CO₂ flux. Results show that air-sea CO₂ flux changes into negative (i.e., absorption) when the lake is autotrophic with ΔDIC being < -100μmol/kg.

Journal

• Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)

  Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 72 (2), I_982-I_987, 2016

  Japan Society of Civil Engineers

Keywords

• blue carbon
• coastal lagoon
• air-sea CO₂ flux
• numerical computations
• metabolism

Details

• CRID: 1390282680330208000
• NII Article ID: 130005263430
• DOI: 10.2208/jscejoe.72.i_982
• ISSN: 21854688
• Web Site: https://www.jstage.jst.go.jp/article/jscejoe/72/2/72_I_982/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed