The Low-Level Jet as a Western Boundary Current
The Low-Level Jet as a Western Boundary Current
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作为西边界流的低空急流
DOI：
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发表时间：
1976
期刊：
影响因子：
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通讯作者：
David Anderson
中科院分区：
文献类型：
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作者：
David Anderson
摘要 穿过赤道并沿索马里海岸向上流动的低空急流被认为是东非山脉的西边界流。据推测，这股急流是受到南半球副热带高压带低层辐散和季风槽辐合的推动。提出了具有此类强迫的简单模型，并获得了解析和数值解。这些似乎与观察结果相当一致。研究了模型射流对强迫空间变化的敏感性、低层辐合强度的时间变化以及非线性。
Abstract The low-level jet which flows across the equator and up the Somali coast is considered as a western boundary current of the East African mountain chain. The jet is assumed to be forced by the low-level divergence in the subtropical high pressure belt of the Southern Hemisphere and convergence in the monsoon trough. A simple model with this type of forcing is proposed and analytic and numerical solutions obtained. These appear to be in reasonable agreement with observation. The sensitivity of the model jet to spatial variation in the forcing, temporal changes in the intensity of the low-level convergence, and nonlinearity are examined.