摘要
利用京津冀区域内所辖65个站点1954—2002年的观测资料,分析了该区域内沙尘暴的气候变化特征。结果表明:京津冀区域绝大部分地区是沙尘暴的主要影响区,冀北高原是该区域沙尘暴的易发区和多发区,定州、饶阳一带是该区域沙尘暴的易发区。沙尘暴的发生时间具有明显的日变化特征和季节差异,沙尘暴的发生时间大多集中在中午至傍晚,且基本为春多秋少。该区域内沙尘暴发生的日数呈现整体减少趋势,各分区域的变化趋势具有相似性,只是在减少幅度和年代际减少趋势上略有不同。
Based on the available observation data from 65 meteorological stations in Beijing,Tianjin and Hebei region in 1954 to 2002,the climate change characteristics of dust-storms in this area have been analyzed.It was shown that the most part of this area is easily influenced area of dust-storms,the altiplano in the north of Hebei Province is easy and high incidence area,and the area of Dingzhou and Raoyang is easy incidence area.Dust-storms mostly happen from noon to dusk,with more in the spring and less in the autumn.The frequency of dust-storms is with the trend of decreasing in Beijing,Tianjin and Hebei region,with similar trend but different degree of decreasing in different areas of the region.
出处
《环境科学研究》
EI
CAS
CSCD
北大核心
2004年第3期21-24,共4页
Research of Environmental Sciences
基金
河北省科学技术研究与发展计划课题(01220602D)
关键词
京津冀区域
沙尘暴
变化趋势
Beijing, Tianjin and Hebei region
dust-storm
trend of change
