4.6 Article

Leading modes of wind field variability over the western Tibet Plateau

期刊

CLIMATE DYNAMICS
卷 60, 期 3-4, 页码 1239-1251

出版社

SPRINGER
DOI: 10.1007/s00382-022-06358-2

关键词

Western Tibet Plateau; Western Tibetan Vortex; MV-EOF; Leading mode; Horizontal wind fields

向作者/读者索取更多资源

This study identifies the dominant wind patterns over the western Tibet Plateau using MV-EOF analysis. It finds that the wind field in most seasons over the plateau shows high similarity to the Western Tibetan Vortex.
Atmospheric circulations bring moisture from above the ocean to the high mountains of the western Tibet Plateau (TP), thus wind variability is of great importance to the water cycle centered on the western TP. This study therefore examines the leading modes of the wind fields over the western TP. We use the multivariate empirical orthogonal function (MV-EOF) analysis method to detect the dominant wind patterns above the western TP. This method extracts the leading modes of combined meridional and zonal wind variability at 200-hPa in the region of 22 degrees N-50 degrees N, 50 degrees E-92 degrees E. We find the first leading mode of the combined zonal and meridional wind field in the annual mean and in most seasons (spring, summer and autumn) over the western TP shows high similarity to the Western Tibetan Vortex (WTV), a large-scale atmospheric vortex-like pattern recently recognized over the western TP. In winter, the WTV, however, is closer to the second leading mode. We estimate the sensitivity of our results by changing the domain of the MV-EOF analysis region surrounding the western. We find the influence of the WTV is less sensitive to analysis location around the western TP. In short, the WTV generally represents the first leading mode of the wind field in most seasons over the western TP. This study augments our knowledge on wind variability over the western TP.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据