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Simulations of chlorofluorocarbons in and around the Sea of Okhotsk : Effects of tidal mixing and brine rejection on the ventilation

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Title: Simulations of chlorofluorocarbons in and around the Sea of Okhotsk : Effects of tidal mixing and brine rejection on the ventilation
Authors: Uchimoto, K. Browse this author →KAKEN DB
Nakamura, T. Browse this author
Nishioka, J. Browse this author
Mitsudera, H. Browse this author
Yamamoto-Kawai, M. Browse this author
Misumi, K. Browse this author
Tsumune, D. Browse this author
Issue Date: 25-Feb-2011
Publisher: American Geophysical Union
Journal Title: Journal of Geophysical Research, Oceans
Volume: 116
Start Page: C02034
Publisher DOI: 10.1029/2010JC006487
Abstract: Ventilation of waters in and around the Sea of Okhotsk was investigated using simulations of chlorofluorocarbons (CFCs) in the northwestern North Pacific. We used an ocean general circulation model coupled with a sea ice model. The model reproduces the distributions of CFCs similar to observed values and indicates the importance of tidal mixing along the Kuril Islands and brine rejection to ventilation of waters in and around the Sea of Okhotsk. To clarify the role of each process, numerical experiments excluding one of the two processes were carried out. Results show that brine rejection transports CFCs into the intermediate layer as deep as 200-400 m along the path of dense shelf water in the western Sea of Okhotsk, but hardly to other areas and layers. On the other hand, tidal mixing transports CFCs into the intermediate and deeper layers throughout the Sea of Okhotsk. We conclude that the tidal mixing has a greater influence than brine rejection on the ventilation of layers below the winter mixed layer.
Rights: Copyright 2011 by the American Geophysical Union.
Type: article
URI: http://hdl.handle.net/2115/46975
Appears in Collections:低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 内本 圭亮

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