| 我国东部季风区夏季持续非绝热加热的特征分析和数值试验 |
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| 引用本文： | 刘向文,孙照渤,顾伟宗,等.我国东部季风区夏季持续非绝热加热的特征分析和数值试验[J].大气科学,2009,33(1):71-80. |
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| 作者姓名： | 刘向文 孙照渤 顾伟宗 等 |
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| 作者单位： | 1.南京信息工程大学 江苏省气象灾害重点实验室, 南京,210044;国家气候中心 中国气象局气候研究开放实验室, 北京,100081 |
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| 基金项目： | 国家自然科学基金资助项目40775059，江苏省气象灾害重点实验室资助项目KLME060301、KLME050304、KLME060212 |
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| 摘 要： | 首先用NCEP/NCAR再分析资料统计了我国东部季风区华南、江淮、华北的夏季持续非绝热加热情况, 然后针对非绝热加热的主要贡献因子凝结潜热进行不同区域的数值试验, 从而探讨了各区凝结潜热加热对大气环流的可能影响途径。所有数值试验都揭示了凝结加热可以首先在对流层中低层的加热区附近激发气旋性异常, 然后异常向东北传播, 并最终在中高纬地区形成正负中心相间的波列状结构, 这在一定程度上体现了潜热加热能的向东向极频散过程。此外, 不同个例年试验结果的差异说明了大气环流对凝结加热的最初响应情况比较复杂, 很大程度上依赖于加热初始阶段的大气环流场, 而呈现出与垂直环流结构相类似的异常分布是可能的响应方式之一。
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| 关 键 词： | 持续非绝热加热 凝结加热 中高纬环流 波列 |
Feature Analysis and Numerical Experiments of the Persistent Diabatic Heating in the Summer Monsoon Regions in Eastern China |
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| LIU Xiangwen,SUN Zhaobo,GU Weizong and et al.Feature Analysis and Numerical Experiments of the Persistent Diabatic Heating in the Summer Monsoon Regions in Eastern China[J].Chinese Journal of Atmospheric Sciences,2009,33(1):71-80. |
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| Authors: | LIU Xiangwen SUN Zhaobo GU Weizong and |
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| Institution: | 1.Jiangsu Key Laboratory of Meteorological Disaster, Nanjing University of Information Science & Technology, Nanjing 210044;Laboratory for Climate Studies, National Climate Center, China Meteorological Administration, Beijing 1000812.Jiangsu Key Laboratory of Meteorological Disaster, Nanjing University of Information Science & Technology, Nanjing 2100443.Climate Center of Shandong Province, Ji'nan 250031 |
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| Abstract: | The NCEP/NCAR reanalysis data is firstly used to analyse the persistent diabatic heating in the summer monsoon regions including South China,the Changjiang River-Huaihe River valley and North China.Seeing that condensation heating is the main part of diabatic heating in the monsoon region,then related numerical experiments in the above three regions are made so as to discuss the possible impacting approaches of condensation heating on general circulation.All numerical experiments reveal that,the condensatio... |
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| Keywords: | persistent diabatic heating condensation heating mid-high latitude circulation wave train |
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