| Analysis of the Trends of Thunderstorms in 1951–2007 in Jiangsu Province |
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| 引用本文： | 魏建苏,刘 梅,张 备,俞剑蔚.Analysis of the Trends of Thunderstorms in 1951–2007 in Jiangsu Province[J].热带气象学报(英文版),2011,17(1):58-63. |
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| 作者姓名： | 魏建苏 刘 梅 张 备 俞剑蔚 |
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| 作者单位： | Jiangsu Meteorological Center; |
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| 基金项目： | Social Development Program of Jiangsu Science and Technology (BS2007088) |
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| 摘 要： | Based on the 1951–2007 thunderstorms in Jiangsu, a study is conducted for their climate trends, periodicity, spatiotemporal patterns, and the distributions of the first and last days of the thunderstorms at different guarantee rates (GRs) using climate tendency rate, wavelet analysis, and GR for diagnosis. Results suggest that the inter-annual number of thunderstorm days (TSDs) exhibits a decreasing trend in this province. The trend is displayed mainly in the decreasing TSD number in summer and autumn except in spring, when the variation is not significant in the study period. In this province, the TSD number declines by ~2 days per 10 years. On an inter-annual basis, the pronounced positive departures of the number take place chiefly in the early 1960s, the late 1960s to the early-mid-1970s, the late 1980s, and the late 1990s compared with the negative anomalies dominant in the late 1970s to the mid-1980s, the mid-to-late-1990s, and the late 1990s to 2007. There are vast differences in the initial and ending days at diverse GRs in different areas of the province. At 50% GR, the earliest (last) days occur from mid-March to early April (early to late September) while at 80% GR, the initial (last) days are from late March to early May (early to late October). For the distribution of periods, the periods >8–10 years are relatively stable for the entire province. Based on 1951–2007 period analysis, the region north (south) of the Huaihe River experiences TSDs less (more) than normal days in recent years.
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ANALYSIS OF THE TRENDS OF THUNDERSTORMS IN 1951-2007 IN JIANGSU PROVINCE |
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| WEI Jian-su,LIU Mei,ZHANG Bei and YU Jian-wei.ANALYSIS OF THE TRENDS OF THUNDERSTORMS IN 1951-2007 IN JIANGSU PROVINCE[J].Journal of Tropical Meteorology,2011,17(1):58-63. |
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| Authors: | WEI Jian-su LIU Mei ZHANG Bei and YU Jian-wei |
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| Institution: | Jiangsu Meteorological Center,Nanjing 210008 China |
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| Abstract: | Based on the 1951-2007 thunderstorms in Jiangsu,a study is conducted for their climate trends,periodicity,spatiotemporal patterns,and the distributions of the first and last days of the thunderstorms at different guarantee rates (GRs) using climate tendency rate,wavelet analysis,and GR for diagnosis.Results suggest that the inter-annual number of thunderstorm days (TSDs) exhibits a decreasing trend in this province.The trend is displayed mainly in the decreasing TSD number in summer and autumn except in spr... |
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| Keywords: | thunderstorm climate tendency wavelet analysis guarantee rate initial and ending days |
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