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首页> 外文期刊>Geoscience and Remote Sensing Letters, IEEE >Temporal Scales of Satellite-Derived Atmospheric Winds Over the Asian Monsoon Region
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Temporal Scales of Satellite-Derived Atmospheric Winds Over the Asian Monsoon Region

机译：亚洲季风区上来自卫星的大气风的时标

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摘要

The autocorrelation function of Meteosat-7-derived atmospheric motion vectors (AMVs) has been calculated over the Indian Ocean region for the Asian summer and winter monsoon seasons. The time where the autocorrelation function dropped to 0.5 was defined as the decorrelation time. It was observed that seasonal forcing caused the circulation patterns to be highly stable with decorrelation timescales on the order of 24 h or more at some regions. The analysis was done for the vector wind ($u + iv$), the zonal component $u$, and the meridional component $v$. The nature of the autocorrelation function clearly followed the changing wind circulations with season and pressure levels.
机译：在亚洲夏季和冬季季风季节，已经计算出印度洋地区Meteosat-7衍生的大气运动矢量（AMV）的自相关函数。自相关函数下降到0.5的时间被定义为去相关时间。观察到，季节性强迫使循环模式在某些区域的去相关时标高度稳定在24 h或更长时间。对矢量风（$ u + iv $），纬向分量$ u $和子午分量$ v $进行了分析。自相关函数的性质显然遵循随季节和压力水平变化的风环。

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