【作者】 张仁健； 石广玉； 金井豊； 太田充恒； 徐永福； 龚晏邦； 陈焕森；

【Author】 ZHANG Ren-jian, SHI Guang-yu, Yutaka Kanai, Atsuyuki Ohta XU Yong-fu, GONG Yan-bang, CHEN Huan-sen(/. LAPC, Institute Atmospheric Physical, CAS; 2. LASG, Institute Atmospheric Physical, CAS, Beijing 100029; 3. Geological Survey of Japan, National Inst. Advanced Industrial Science and Technology, Japan)

【机构】 LAPC,中科院大气物理所； LASG,中科院大气物理所； 日本产业技术所地球科学研究部；

【摘要】 介绍了2002年春季北京沙尘暴天气总悬浮颗粒物浓度(TSP)质量浓度和数浓度的观测结果,发现2002年3月20日沙尘暴期间总悬浮颗粒物质量浓度高达12.06mg/m~3,是1996年国家环保局颁布的TSP三级污染标准的24倍。发生在4月8日的沙尘天气颗粒物总质量浓度高达3.31mg/m~3。从颗粒物粒子谱分布特征来看,3月20日沙尘暴期间细粒子(d<2μm)浓度是沙尘暴发生前的26.4倍;粗粒子(d>2μm)的浓度是沙尘暴发生前的63.8倍.本文观测资料对卫星资料反演、输送模式验证和大气环境质量研究有重要意义。更多还原

【Abstract】 The observation results of the total mass concentration and number concentration in 2002 spring of Beijing are introduced. Dust storm on March 20, 2002, which had great influence on the wide areas in northern China, is the severest one in the last ten years. Observation results show that the visibility was less than 200 m and the TSP concentration reached 12.06 mg/m3 on March 20, 2002 in Beijing. In another sand-dust weather in Beijing on April 8, the TSP concentration reached 3.31 mg/m3. Observation by optical particles counter shows that the number concentrations of coarse particles (d>2 μm) are 63.8 times as that before dust storm while the number concentrations of fine particles (d<2μm) are only 26.4 times as that before dust storm. The observation data in this paper will be useful for dust storm remote sensing, validating transportation model and atmospheric environment research.更多还原