摘要
利用全国541个站的均一化日最高气温资料,分析了高温日数的时空变化特征及其对全球变暖的响应。结果表明:1956—2006年我国高温日数有两个高值中心,分别出现在吐鲁番盆地和江南地区。高温日数呈现"增加-减少-增加"的趋势;新疆的高温日数有准3a的周期变化,中国东部4个地区的高温日数都存在3～6a的周期变化。中东部地区高温日数由减少转变为增加趋势的时间并不一致,随着纬度的增加而逐渐延迟。
By using 541-station uniform maximum temperature in China, the temporal and spatial distributions of yearly high temperature days with daily maximum temperature ≥ 35 ℃ and their responses to global warming were analyzed. The results show that the average high temperature days have two high centers in Turpan Basin and Jiangnan region. The high temperature days have an evolutional trend of increasing-decreasing-increasing and show the significant 3-year period in Xinjiang and the 3- to 6-year period in the 4 regions of eastern China. The time of trend changing from decreasing to increasing is not synchronous for the whole country, and it gets later with the increasing latitude.
出处
《气候变化研究进展》
CSCD
2008年第3期177-181,共5页
Climate Change Research
基金
国家自然科学基金项目(40705031)
中国气象局轨道建设项目“高温热浪监测预警业务系统的研制”和“气象灾害风险区划与影响评估”资助
关键词
高温日数
全球变暖
区域响应
high temperature days
global warming
regional response
