| DOI: | 10.1007/s00382-016-3020-z
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| Scopus记录号: | 2-s2.0-84957975948
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| 论文题名: | Multi-year wind dynamics around Lake Tanganyika |
| 作者: | Docquier D.; Thiery W.; Lhermitte S.; van Lipzig N.
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| 刊名: | Climate Dynamics
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| ISSN: | 9307575
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| 出版年: | 2016
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| 卷: | 47, 期:2017-09-10 | | 起始页码: | 3191
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| 结束页码: | 3202
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| 语种: | 英语
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| 英文关键词: | Lake Tanganyika
; Orography
; Regional climate model
; Wind
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| 英文摘要: | Lake Tanganyika is the second largest freshwater lake in the world by volume and is of prime importance for the regional economy in East Africa. Although the lake is recognized as a key component of the regional climate system, little is known about atmospheric dynamics in its surroundings. To understand this role, we analyze winds around Lake Tanganyika as modeled by a high resolution (7 km) regional climate model (Consortium for Small-scale Modeling in Climate Mode) over the period 1999–2008. Modeled surface wind speed and direction are in very good agreement with high resolution (12.5 km) Quick Scatterometer (QuikSCAT) satellite wind observations during the dry season. Comparison of a control run with a model simulation where all lake pixels are replaced by representative land pixels indicates that mean surface wind speed over Lake Tanganyika almost doubles due to lake presence. Furthermore, a region of higher surface wind speed in the central part of the lake is identified and confirmed by QuikSCAT observations. A combination of wind channeling along valley mountains and wind confluence on the upwind side of the lake is responsible for this speed-up. The lower wind speeds in the rest of the lake result from blocked conditions due to more pronounced orography. Finally, the model captures a zone of higher wind speed at around 2 km height, associated with the low-level Somali jet. These results demonstrate that high resolution climate modeling allows a detailed understanding of wind dynamics in the vicinity of Lake Tanganyika. © 2016, Springer-Verlag Berlin Heidelberg. |
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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/53491
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| Appears in Collections: | 过去全球变化的重建
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作者单位: | Department of Earth and Environmental Sciences, K.U.Leuven, Celestijnenlaan 200E, Louvain, Belgium
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| Recommended Citation: | |
Docquier D.,Thiery W.,Lhermitte S.,et al. Multi-year wind dynamics around Lake Tanganyika[J]. Climate Dynamics,2016-01-01,47(2017-09-10)
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