热带气象学报2012，Vol.28Issue(2)：251-257,7.DOI:10.3969/j.issn.1004-4965.2012.02.013
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
INVESTIGATION OF THE SPATIAL AND TEMPORAL DISTRIBUTION OF EXTREME HEAT IN MAINLAND OF CHINA WITH DETRENDED FLUCTUATION AND PERMUTATION ENTROPY
摘要
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.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Key words
atmospheric environment/ extreme heat/ detrended fluctuation analysis/ permutation entropy/ spatial and temporal distribution分类
天文与地球科学引用本文复制引用
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,2012,28(2):251-257,7.基金项目
国家科技支撑计划项目(2007BAC29B05) （2007BAC29B05）
江苏省社会发展面上项目(BS2007066) （BS2007066）
江苏省气象灾害重点实验室项目(KLME05005)共同资助 （KLME05005）
