摘要
采用1951—2005年全国主要省会城市逐日最高气温资料,探讨了主要大城市近50年的年高温日数、热浪过程的时空变化特征。分析结果表明:长江流域地区是我国连续5天以上长时间高温热浪过程频发区。全国主要省会城市历年高温日数变化,自东南向西北呈现出的这种"增—减—增"的趋势,但是近年来绝大多数城市呈现增温趋势。不同地域的高温呈现不同的季节内分布特征,高温出现的早晚和强度有明显差别。
The daily maximum temperature from 1951 to 2005 for the main capital cities of China is used to analyze the characteristics of temporal and spatial distribution of the number of hot days and heat waves.The results show that the Yangtze River basin is the area attacked by heat waves frequently with long duration(more than 5 days);the temperature increase in main capital cites in China exhibited a 'increase-decrease-increase' pattern from southeast to northwest,but most cities experienced increasing temperature in the recent years;the appearance dates and density of high temperature weather are different in different regions.
出处
《气象科技》
2013年第2期347-351,共5页
Meteorological Science and Technology
基金
上海市重点实验室建设项目(11DZ2260900)
国家科技支撑计划项目(2007BAC29B05)资助
关键词
高温
热浪
时空分布
high temperature,heat wave,temporal and spatial distribution
