The statistic and variance of cyclones entering coastal waters of China in 1979-2012

Qin Ting; Wei Lixin

doi:10.3969/j.issn.0253-4193.2015.01.005

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Qin Ting, Wei Lixin. The statistic and variance of cyclones entering coastal waters of China in 1979-2012[J]. Haiyang Xuebao, 2015, 37(1): 43-52. doi: 10.3969/j.issn.0253-4193.2015.01.005

Citation:

Qin Ting, Wei Lixin. The statistic and variance of cyclones entering coastal waters of China in 1979-2012[J]. Haiyang Xuebao, 2015, 37(1): 43-52. doi: 10.3969/j.issn.0253-4193.2015.01.005

Qin Ting, Wei Lixin. The statistic and variance of cyclones entering coastal waters of China in 1979-2012[J]. Haiyang Xuebao, 2015, 37(1): 43-52. doi: 10.3969/j.issn.0253-4193.2015.01.005

Citation:

Qin Ting, Wei Lixin. The statistic and variance of cyclones entering coastal waters of China in 1979-2012[J]. Haiyang Xuebao, 2015, 37(1): 43-52. doi: 10.3969/j.issn.0253-4193.2015.01.005

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The statistic and variance of cyclones entering coastal waters of China in 1979-2012

doi: 10.3969/j.issn.0253-4193.2015.01.005

Qin Ting,
Wei Lixin

Key Laboratory of Marine Environmental Information Technology, State Oceanic Administration, Beijing 100081, China;National Marine Environmental Forecasting Center, Beijing 100081, China

Received Date: 2013-07-17
Rev Recd Date: 2014-11-09

Abstract

Abstract

Based on the 6 hourly sea level pressure data of ERA-Interim reanalysis over the period 1979-2012 and automated cyclone detection and tracking algorithm from Reading University,extratropical cyclones entering coastal waters of China are examined and their activities such as source,distribution,intensity,frequency,life time,annual and seasonal variability and so on are investigated. Conclusions are as follows:(1)From 1979 to 2012,there are 1 530 extratropical cyclones are detected in coastal waters of China,45 per year on average. Since the early 1990s the number of extratropical cyclone in coastal waters of China shows positive trend,and the route has a tendency to move northward. This is consistent with previous research conclusion of extratropical cyclone in the northern hemisphere. Especially in the north of coastal waters of China ,cyclone number increased significantly. (2)These cyclones mainly come from four regions,Jianghuai,Yellow River,East China Sea and Mongolia,and the most proportion is Jianghuai,the least is Mongolia,especially in summer. When atmospheric and ocean conditions meet the requirements,the cyclones can growth explosively.The main sources of explosive cyclones are east ocean of Japan and the east ocean of of Korean Peninsula,compare to this tow place,there are less cyclones can growth explosively in coastal waters of China .The number of explosive cyclones is the largest in spring,the least in summer. More than half of the cyclone's life is for 1 to 4 days,the number of long life cyclones(more than 10 days) is the largest in summer,the least in winter. The cyclones are more stronger in winter and more weaker in summer.
- coastal waters of China,
- automated cyclone detection and tracking algorithm,
- extratropical cyclones,
- explosive cyclones,
- temporal and spatial distribution

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