热带气象学报2017，Vol.33Issue(4)：451-466,16.DOI:10.16032/j.issn.1004-4965.2017.04.003
夏季硫酸盐和黑碳气溶胶对中国云特性的影响
THE IMPACT OF SULFATE AND BLACK CARBON AEROSOLS ON SUMMERTIME CLOUD PROPERTIES IN CHINA
摘要
Abstract
We investigate the impacts of sulfate and black carbon aerosols on cloud microphysical properties over China during 1 August-1 September,2006,by using the WRF-Chem model (Weather Research and Forecasting model coupled with Chemistry).A comprehensive model evaluation is performed for simulated meteorology,aerosol concentrations,aerosol optical properties,as well as cloud variables by using the ground-based and satellite observations across China.The model simulates well the meteorological variables such as surface air temperature,precipitation,relative humidity,and wind speed,in terms of both magnitudes and spatial distributions.Simulated concentrations of sulfate,nitrate,organic carbon,black carbon,aerosol optical depth(AOD),aerosol single scattering albedo(SSA),cloud top effective radius (CER),cloud optical thickness(COD),and liquid water path(LWP) have relatively large biases.The impacts of sulfate and black carbon on cloud properties are quantified by two sensitive simulations with tripled emissions of sulfur dioxide and black carbon,respectively.Sulfate is found to be more important than black carbon as they serve as cloud condensation nuclei.The sensitivity of cloud-top cloud droplet number concentrations over eastern China to sulfate aerosol is found to increase from the North to South China,as a result of the higher relative humidity in South China.The simulated changes in effective radius of cloud droplets follow the Twomey Effect when concentrations of sulfate increase,but those in effective radius of cloud droplets differ as concentrations of black carbon increase.Compared to sulfate,black carbon aerosol is found to have a much more important effect on cloud fraction in eastern China as a result of the cloud "burning" effect caused by the absorption of sunlight.关键词
硫酸盐气溶胶/黑碳气溶胶/气溶胶光学厚度/云光学厚度/云量/云水路径/云滴有效半径Key words
sulfate/black carbon/aerosol optical depth/cloud optical depth/cloud fraction/liquid water depth/cloud effective radius分类
资源环境引用本文复制引用
尚晶晶,廖宏,符瑜,杨青..夏季硫酸盐和黑碳气溶胶对中国云特性的影响[J].热带气象学报,2017,33(4):451-466,16.基金项目
国家重点基础研究发展计划(973计划)(2014CB441200)资助 （973计划）
