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| 我国大陆极端高温基于去趋势波动及排列熵法的时空分布特征研究 | |
| 引用本文： | 郑有飞,尹继福,吴荣军.我国大陆极端高温基于去趋势波动及排列熵法的时空分布特征研究[J].热带气象学报,2012(2):251-257. |
| 作者姓名： | 郑有飞 尹继福 吴荣军 |
| 作者单位： | 1. 南京信息工程大学/江苏省大气环境监测与污染控制高技术研究重点实验室,江苏 南京 210044 2. 南京信息工程大学大气物理学院,江苏 南京 210044 3. 南京信息工程大学环境科学与工程学院, 江苏 南京 210044 |
| 基金项目： | 国家科技支撑计划项目(2007BAC29B05);江苏省社会发展面上项目(BS2007066);江苏省气象灾害重点实验室项目(KLME05005)共同资助 |
| 摘 要： | 为进一步掌握我国大陆极端高温的时空分布特征,利用去趋势波动分析法确定全国83个站点极端高温阈值,通过排列熵方法检测全国10个区的极端高温周期和突变。结果表明,我国大陆极端高温频数主要以7年、10～13年和16～20年三大周期变化;突变主要发生在1960年代、1970年代末和1980年代初;1950年代初极端高温频率年值最大,而后急剧下降,直至1980年代中后期才出现明显的增长趋势;极端高温年频数均值南方较北方大,且大、小频数分布区域集中。 |
| 关 键 词： | 大气环境学 极端高温 去趋势波动分析 排列熵 时空分布特征 |
| 收稿时间： | 2010/4/23 0:00:00 |
| 修稿时间： | 2011/10/18 0:00:00 |
INVESTIGATION OF THE SPATIAL AND TEMPORAL DISTRIBUTION OF EXTREME HEAT IN MAINLAND OF CHINA WITH DETRENDED FLUCTUATION AND PERMUTATION ENTROPY |
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| ZHENG You-fei,YIN Ji-fu and WU Rong-jun.INVESTIGATION OF THE SPATIAL AND TEMPORAL DISTRIBUTION OF EXTREME HEAT IN MAINLAND OF CHINA WITH DETRENDED FLUCTUATION AND PERMUTATION ENTROPY[J].Journal of Tropical Meteorology,2012(2):251-257. | |
| Authors: | ZHENG You-fei YIN Ji-fu and WU Rong-jun |
| Institution: | Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Province, NanjingUniversity of Information Science& Technology, Nanjing 210044, China;College of Atmospheric physics, Nanjing University of Information Science& Technology, Nanjing 210044, China;1. Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Province, NanjingUniversity of Information Science& Technology, Nanjing 210044, China; 2. College of Environmental Science and Engineering, Nanjing University o |
| Abstract: | In order to grasp the spatial and temporal distribution of extreme heat in China,a threshold is determined with Detrended Fluctuation Analysis(DFA) for 83 stations across the country,and the period and mutation in 10 regions across China are tested with Permutation Entrop(PE).It has been found that the frequency change of extreme heat in China demonstated characteristics of oscillations of 7 years,10～13 years and 16～20 years,and the mutation mainly happened in the 1960s and 1977—1983.Maximum frequency occurred in the early 1950s,and then sharply decreased until the late 1980s when an obvious growth trend appeared.The maximum frequency in the southern is higher than that in the northen part of China,with high and low frequencies concentrated in spatial distribution. |
| Keywords: | atmospheric environment extreme heat detrended fluctuation analysis permutation entropy spatial and temporal distribution |
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