邓诗茹,吴立广,王瑞芳,王超.多种再分析资料中热带气旋潜在生成指数分析.气象科学,,(): DENG Shiru,WU Liguang,WANG Ruifang,WANG Chao.Analysis of tropical cyclone genesis potential index with multiple reanalysis data.Journal of the Meteorological Sciences,,():
多种再分析资料中热带气旋潜在生成指数分析
Analysis of tropical cyclone genesis potential index with multiple reanalysis data
投稿时间:2012-12-01  修订日期:2013-03-31
DOI:10.3969/2013jms.0027
中文关键词:  热带气旋  潜在生成指数  再分析资料
英文关键词:Tropical cyclone  Genesis potential index  Reanalysis dataset
基金项目:国家重点基础研究发展计划(2009CB421503)
作者单位E-mail
邓诗茹 南京信息工程大学 气象灾害省部共建教育部重点实验室, 南京 210044  
吴立广 南京信息工程大学 气象灾害省部共建教育部重点实验室, 南京 210044 liguang@nuist.edu.cn 
王瑞芳 南京信息工程大学 气象灾害省部共建教育部重点实验室, 南京 210044  
王超 南京信息工程大学 气象灾害省部共建教育部重点实验室, 南京 210044  
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中文摘要:
      根据7套再分析资料计算的热带气旋潜在生成指数(GPI),分析了GPI对西北太平洋区域台风盛季(7—9月)热带气旋生成的表征能力。结果表明,虽然这些再分析资料计算得到的GPI的空间分布与观测的热带气旋生成特征都比较一致。但是,在时间变化上7套再分析资料计算的GPI对观测热带气旋生成的表征能力差异较大,其中ERA-40(欧州中期天气预报中心再分析资料)和MERRA(美国国家航空和航天局研究和应用再分析资料)的GPI与观测的相关系数较高。进一步分析表明,各套资料GPI之间时间变化的差异主要来自相对湿度,ERA-40和MERRA的GPI与观测较高的相关系数与相对湿度有密切关系。
英文摘要:
      The tropical cyclone genesis potential index (GPI) in the northwestern Pacific basin is calculated based on seven reanalysis datasets during peak season of tropical cyclone (July-September). Although spatial distributions of GPI derived from the datasets are consistent with the observed tropical cyclone genesis characteristic, the time series of GPI are quite different, in which, the correlation coefficient of observed tropical cyclone genesis with GPI derived from MERRA and ERA-40 is higher. Further, research reveals that the differences in time series of GPI are mainly due to relative humidity in seven reanalysis datasets. The same as the higher correlation coefficient of observed tropical cyclone genesis with GPI from ERA-40 and MERRA.
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