塔克拉玛干沙漠腹地春季一次沙尘暴沙尘气溶胶的辐射特征  

Analysis on Radiation Forcing of Dust Aerosol in a Spring Typical Dust Storm Event in the Centre of Takla Makan Desert

作　　者：孔丹[1] 何清[1] 张瑞军[1] 黄向春 

机构地区：[1]中国气象局乌鲁木齐沙漠气象研究所 [2]新疆巴州气象局,新疆库尔勒841000

出　　处：《干旱气象》2008年第2期36-40,62,共6页Journal of Arid Meteorology

基　　金：国家自然科学基金(40775019);中国沙漠气象科学研究基金(SQJ2005001;中国气象局多轨道业务建设项目(QY20070201)共同资助

摘　　要：利用塔中气象站地面辐射等气象资料结合PM10(空气动力学当量≤10μm的悬浮颗粒)质量浓度资料,以2007年4月15日晴天辐射特征为背景对4月22日塔克拉玛干沙漠腹地发生的沙尘暴天气进行局地辐射特征和沙尘气溶胶与净辐射作相关分析。结果表明白天沙尘的辐射强迫对地表有冷却作用,夜间起保温作用。观测期间,总辐射日峰值减少量为507 W/m2,地面长波日峰值增加量为185 W/m2,地面净辐射能量收支表现为白天的日峰值减少量为198 W/m2,夜间的日峰值增加量为40 W/m2。Based on the meteorological data and PM10 data from the weather station in the centre of the Takla Makan desert, the local radiation characteristics over there on April 22, 2007, on which the sandstorm weather event occurred, and the correlation of dust aerosol and the net radiation were analyzed and compared with the sunshine day＇ s radiation characteristics on April 15. The results indicate that the radiation forcing of dust aerosol caused surface temperature decreasing in daytime and increasing at night. During the observation period, the peak value of the total radiation decreased by 507 W/m^2, and the peak value of long - wave radiation increased by 185 W/m^2. The maximum of the net radiation decreased by 198 W/m^2 in day time and increased by 40 W/m^2 at night.

关 键 词：塔克拉玛干沙漠 沙尘气溶胶 辐射强迫 

分 类 号：P422.9[天文地球—大气科学及气象学]