| DOI: | 10.1002/2014GL061706
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| 论文题名: | Dynamic and thermal responses of the Kuroshio to typhoon Megi (2004) |
| 作者: | Wei J.; Liu X.; Wang D.-X.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9544
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| EISSN: | 1944-9275
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| 出版年: | 2014
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| 卷: | 41, 期:23 | | 起始页码: | 8495
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| 结束页码: | 8502
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| 语种: | 英语
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| 英文关键词: | baroclinicity
; kinetic energy
; Kuroshio
; SST cooling
; tropical cyclone
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| Scopus关键词: | Atmospheric temperature
; Budget control
; Cooling
; Dynamic response
; Hurricanes
; Kinetic energy
; Kinetics
; Mixing
; Potential energy
; Storms
; Surface waters
; Thermal conductivity
; Baroclinic pressure
; Baroclinicity
; Current velocity
; Induced temperature
; Kuroshio
; Ocean mixed layers
; Sea surface temperature (SST)
; Tropical cyclone
; Ocean currents
; advection
; baroclinic wave
; climate change
; cooling
; kinetic energy
; open ocean
; sea surface temperature
; tropical cyclone
; typhoon
; Kuroshio Current
; Pacific Ocean
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| 英文摘要: | Relatively weak hurricane-induced cooling (<1-C) is often observed in the Loop Current, while observed sea surface temperature (SST) cooling is much stronger in the Kuroshio. This was previously attributed to strong advection effects by the Loop Current. Based on a budget analysis, this study quantitatively diagnoses the dynamic and thermal responses of the Kuroshio to typhoon Megi and four additional tropical cyclones (TCs), which produce up to ∼3-C SST cooling within the Kuroshio itself. The results show that the surface thermal response of the Kuroshio is a wind-induced temperature cooling primarily due to vertical mixing (up to 96%). The dynamic response of the Kuroshio depends not only on TC conditions (intensity and wind direction) but also on prestorm ocean conditions (e.g., ocean mixed layer depth, baroclinicity, and current velocity). Differently from the open ocean where the ocean gains kinetic energy mainly from wind stress work, the Kuroshio can obtain greater kinetic energy from its baroclinic pressure work, especially in the upper ocean. The strong SST cooling observed in the Kuroshio region is therefore likely associated with the kinetic energy extracted from the Kuroshio baroclinic potential energy, which greatly enhances local vertical mixing. © 2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921617063&doi=10.1002%2f2014GL061706&partnerID=40&md5=4e2c8d27c4e4b03c85840bf42c1a08f6
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/6808
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Laboratory for Climate and Ocean - Atmosphere Studies, Department of Atmospheric and Oceanic Sciences, Peking University, Beijing, China
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| Recommended Citation: | |
Wei J.,Liu X.,Wang D.-X.. Dynamic and thermal responses of the Kuroshio to typhoon Megi (2004)[J]. Geophysical Research Letters,2014-01-01,41(23).
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