Build-up, air mass transformation and propagation of Siberian high and its relations to cold surge in East Asia
Build-up, air mass transformation and propagation of Siberian high and its relations to cold surge in East Asia
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DOI：
10.1007/bf01026822
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发表时间：
1990-03
影响因子：
2
通讯作者：
D. Yihui
中科院分区：
文献类型：
--
作者：
D. Yihui
本文讨论了西伯利亚高压的形成、气团转变和传播及其与东亚冷潮发展的关系。结果表明：(1)西伯利亚高压的发生和发展是中高层质量辐合和辐射冷却共同作用的结果；(2)冬季西伯利亚高压在陆地上的明显转变，这是由下垫面上升的感热和潜热通量引起的；(3)西伯利亚高压及其伴随的冷空气爆发通常经历一个明显的低频率南下传播，周期为10 ~ 20天；(4)东、南海冷潮活动与西伯利亚高压强度密切相关。活跃的寒潮发生在西伯利亚高压通常很强的时候。
The present paper discusses the build-up, the air mass transformation and the propagation of the Siberian high as well as its relations to the development of cold surges in East Asia. It has been found that (1) the genesis and development of the Siberian high result from the combined effects of the mass convergence at middle and upper-level and the radiative cooling; (2) the apparent transformation of the Siberian high over land is observed in winter, which is caused by the upward sensible heat and latent heat flux from the underlying surface; (3) the Siberian high and its attendant cold air outbreaks usually undergo a marked low-frequency, southward propagation with the period of 10–20 days; (4) activity of cold surge over the East China Sea and the South China Sea is closely related to the intensity of the Siberian high. The active cold surge occurs when the Siberian high is usually strong.