| ZHANG Yuming,WU Kejian,ZHANG Xiaoshuang,BI Fan,SONG Zhaoyang,LIU Shouhua. 2013. Improving the estimate of wind energy input into the Ekman layer within the Antarctic Circumpolar Current. Acta Oceanologica Sinica, 32(3):19－27 |
| Improving the estimate of wind energy input into the Ekman layer within the Antarctic Circumpolar Current |
| Improving the estimate of wind energy input into the Ekman layer within the Antarctic Circumpolar Current |
| Received:June 27, 2011 Revised:May 08, 2012 |
| DOI：10.1007/s13131-013-0284-6 |
| Key words:energy input Ekman-Stokes layer Coriolis-Stokes forcing Antarctic Circumpolar Current |
| 中文关键词: energy input Ekman-Stokes layer Coriolis-Stokes forcing Antarctic Circumpolar Current |
| 基金项目:The National Natural Science Foundation of China under contract Nos 40930844 and 40976005. |
| Author Name | Affiliation | E-mail | | ZHANG Yuming | Physical Oceanography Laboratory, Ocean University of China, Qingdao 266100, China | | | WU Kejian | Physical Oceanography Laboratory, Ocean University of China, Qingdao 266100, China | kejianwu@ouc.edu.cn | | ZHANG Xiaoshuang | Key Laboratory of Marine Environmental Information Technology, State Oceanic Administration, National Marine Data and Information Service, Tianjin 300171, China | | | BI Fan | Physical Oceanography Laboratory, Ocean University of China, Qingdao 266100, China | | | SONG Zhaoyang | Physical Oceanography Laboratory, Ocean University of China, Qingdao 266100, China | | | LIU Shouhua | National Marine Data & Information Service, Tianjin 300171, China | |
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| Abstract: |
| Based on the data and method offered by Liu et al. (2009), the direct wind and Stokes drift-induced energy inputs into the Ekman layer within the Antarctic Circumpolar Current (ACC) area are reestimated since the results of the former have been proved to be underestimated. And the result shows that the total rate of energy input into the Ekman-Stokes layer within the ACC area is 852.41 GW, including 649.75 GW of direct wind energy input (76%) and 202.66 GW of Stoke drift-induced energy input (24%). Total increased energy input, due to wave-induced Coriolis-Stokes forcing added to the classical Ekman model, is 52.05 GW, accounting for 6.5% of the wind energy input into the classical Ekman layer. The long-term variability of direct wind and Stokes drift-induced energy inputs into the Ekman layer within the ACC is also investigated, and the result shows that the Stokes drift hinders the decadal increasing trend of direct wind energy input. Meanwhile, there is a period of 4-5 a in the energy spectrums, as same as the Antarctic circumpolar wave. |
| 中文摘要: |
| Based on the data and method offered by Liu et al. (2009), the direct wind and Stokes drift-induced energy inputs into the Ekman layer within the Antarctic Circumpolar Current (ACC) area are reestimated since the results of the former have been proved to be underestimated. And the result shows that the total rate of energy input into the Ekman-Stokes layer within the ACC area is 852.41 GW, including 649.75 GW of direct wind energy input (76%) and 202.66 GW of Stoke drift-induced energy input (24%). Total increased energy input, due to wave-induced Coriolis-Stokes forcing added to the classical Ekman model, is 52.05 GW, accounting for 6.5% of the wind energy input into the classical Ekman layer. The long-term variability of direct wind and Stokes drift-induced energy inputs into the Ekman layer within the ACC is also investigated, and the result shows that the Stokes drift hinders the decadal increasing trend of direct wind energy input. Meanwhile, there is a period of 4-5 a in the energy spectrums, as same as the Antarctic circumpolar wave. |
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