Acidification at the Surface in the East Sea: A Coupled Climate-carbon Cycle Model Study

This modeling study investigates the impacts of increasing atmospheric CO 2 concentration on acidification in the East Sea. A historical simulation for the past three decades (1980 to 2010) was performed using the Hadley Centre Global Environmental Model (version 2), a coupled climate model with atm...

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Bibliographic Details
Published in:Ocean science journal 2018, 53(3), , pp.437-448
Main Authors: Park, Young-Gyu, Seol, Kyung-Hee, Boo, Kyung-On, Lee, Johan, Cho, Chunho, Byun, Young-Hwa, Seo, Seongbong
Format: Article
Language:English
Subjects:
Acidification
Aquatic Pollution
Carbon cycle
Carbon dioxide
Climate
Dissolved inorganic carbon
Earth and Environmental Science
Earth Sciences
Marginal seas
Marine & Freshwater Sciences
Modelling
Oceanography
Surface water
Terrestrial environments
Uptake
Waste Water Technology
Water Management
Water Pollution Control
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Summary:This modeling study investigates the impacts of increasing atmospheric CO 2 concentration on acidification in the East Sea. A historical simulation for the past three decades (1980 to 2010) was performed using the Hadley Centre Global Environmental Model (version 2), a coupled climate model with atmospheric, terrestrial and ocean cycles. As the atmospheric CO 2 concentration increased, acidification progressed in the surface waters of the marginal sea. The acidification was similar in magnitude to observations and models of acidification in the global ocean. However, in the global ocean, the acidification appears to be due to increased in-situ oceanic CO 2 uptake, whereas local processes had stronger effects in the East Sea. pH was lowered by surface warming and by the influx of water with higher dissolved inorganic carbon (DIC) from the northwestern Pacific. Due to the enhanced advection of DIC, the partial pressure of CO 2 increased faster than in the overlying air; consequently, the in-situ oceanic uptake of CO 2 decreased.
ISSN:1738-5261
2005-7172
DOI:10.1007/s12601-018-0018-y