Mean meridional winds in the mid‐ and high‐latitude summer mesosphere

Mean meridional winds in the mid‐ and high‐latitude summer mesosphere
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中高纬度夏季中间层平均经向风

DOI:
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发表时间:
1982
期刊:
影响因子:
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通讯作者:
D. A. Carter
D. A. Carter
中科院分区:
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文献类型:
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作者:
G. Nastrom;B. Balsley;D. A. Carter

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我们使用来自 Poker Flat MST 雷达和所有其他可用站的数据检查夏季上层中间层的平均经向流。观测到的平均流量在 60°N 附近大约 10-15 ms−1 处朝向赤道,比数值模型结果预期的大约大一个数量级。平衡与该流动相关的科里奥利扭矩所需的瑞利摩擦系数约为 4 天−1,大约比当前数值模型中使用的值大十倍。
We examine the mean meridional flow in the summer upper mesosphere using data from the Poker Flat MST radar and all other available stations. The observed mean flow is equatorward at about 10-15 ms−1 near 60°N, about an order of magnitude larger than expected from numerical model results. The Rayleigh friction coefficient required to balance the coriolis torque associated with this flow is about 4 days−1, about ten times larger than values currently used in numerical models.