The Monsoon Rainband over China and Relationships with the Eurasian Circulation
The Monsoon Rainband over China and Relationships with the Eurasian Circulation
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DOI：
10.1175/1520-0442-12.1.115
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发表时间：
1999
影响因子：
4.9
通讯作者：
A. N. Samel;Wei‐Chyung Wang;Xin‐Zhong Liang
中科院分区：
文献类型：
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作者：
A. N. Samel;Wei‐Chyung Wang;Xin‐Zhong Liang
摘要本文对我国季风雨带强降水的初、终日的年际变化进行了定量分析。一个半客观的分析，确定这些值的发展也使得有可能计算年雨带持续时间和总降雨量。总雨带降水和欧亚环流之间的关系，然后确定。这项研究的目的是，所观察到的雨带特性可以用于未来的调查，以评估GCM模拟。本文分析了1951 ~ 1990年中国85个测站的日降水量时间序列，建立了描述中国雨带特征的判据。如果某个地点的日降雨量大于年平均降雨量的1.5%，则定义为“大雨”。然后，强降水被证明是“持续的”，因此当25天内至少6次超过1.5%阈值时，就被识别为雨带。芬...
Abstract Yearly variations in the observed initial and final dates of heavy, persistent monsoon rainband precipitation across China are quantified. The development of a semiobjective analysis that identifies these values also makes it possible to calculate annual rainband duration and total rainfall. Relationships between total rainband precipitation and the Eurasian circulation are then determined. This research is designed such that observed rainband characteristics can be used in future investigations to evaluate GCM simulations. Normalized daily precipitation time series are analyzed between 1951 and 1990 for 85 observation stations to develop criteria that describe general rainband characteristics throughout China. Rainfall is defined to be “heavy” if the daily value at a given location is greater than 1.5% of the annual mean total. Heavy precipitation is then shown to be “persistent” and is thus identified with the rainband when the 1.5% threshold is exceeded at least 6 times in a 25-day period. Fin...