2019年12月
Incorporation of satellite-derived thin-ice data into a global OGCM simulation
CLIMATE DYNAMICS
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- 巻
- 53
- 号
- 11
- 開始ページ
- 7113
- 終了ページ
- 7130
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1007/s00382-019-04979-8
- 出版者・発行元
- SPRINGER
The presence of thin sea ice is indicative of active freezing conditions in the polar ocean. We propose a simple yet effective method to incorporate information of thin-ice category into coupled ocean-sea-ice model simulations. In our approach, the thin-ice distribution restricts thick-ice extent and constrains atmosphere-ocean heat exchange through the sea ice. Our model simulation with the incorporation of satellite-derived thin-ice data for the Arctic Ocean showed much improved representation of sea-ice and upper-ocean fields, including sea-ice thickness in the Canadian Archipelago and the region north of Greenland, mixed-layer depth over the Central Arctic, and surface-layer salinity over the open ocean. Enhanced sea-ice production by the thin-ice data constraint increased the total sea-ice volume of the Arctic Ocean by 5x103-10x103 km(3). Subsequent sea-ice melting was also enhanced, leading to the greater amplitude of the seasonal cycle by approximately 2x103 km(3) (15% of the baseline value from the experiment without the thin-ice data incorporation). Overall, our results demonstrate that the incorporation of satellite-derived information on thin sea ice has great potential for the improvement of coupled ocean-sea-ice simulations.
- リンク情報
- ID情報
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- DOI : 10.1007/s00382-019-04979-8
- ISSN : 0930-7575
- eISSN : 1432-0894
- Web of Science ID : WOS:000494681900035