黑碳-硫酸盐混合气溶胶的辐射特性分析  

Study on Radiative Property of Soot-Sulfate Mixed Aerosol

作　　者：郝丽[1,2] 杨文[1] 吴统文[3] 石广玉[4] 赵剑琦[4] 谭燕 

机构地区：[1]中国科学院寒区旱区环境与工程研究所寒旱区陆面过程与气候变化重点实验室,甘肃兰州730000 [2]陕西省气候中心,陕西西安710015 [3]中国气象局国家气候中心气候研究开放实验室,北京100081 [4]中国科学院大气物理研究所,北京100029 [5]四川省西昌市凉山州气象局,四川西昌615000

出　　处：《高原气象》2010年第5期1238-1245,共8页Plateau Meteorology

基　　金：公益性行业(气象)科研专项"气候系统模式中的关键技术与多模式的比较研究"(GYHY200806006);国际科技合作项目"亚洲沙尘的气候与环境效应研究"(2006DFA21950)共同资助

摘　　要：利用Mie散射理论、外混合模型、均匀球模型和分层球模型,分析考察了黑碳和硫酸盐的混合气溶胶粒子在内外混合状态下的辐射特性和混合方式、容积含量和粒径对辐射特性的影响。结果表明,单次散射反照率和吸收效率因子对黑碳含量和混合方式很敏感,非对称因子和散射效率因子对两者的变化较敏感,消光系数(消光效率因子)对两者的变化不敏感。均匀混合的吸收最大,壳-核模型次之,外混合的吸收最小。壳-核模型中黑碳为核的分层球模型的吸收大于黑碳为壳的分层球模型。小粒子的辐射特性对粒径的变化很敏感,大粒子的辐射特性对粒径的变化不是很敏感。The radiation properties of soot-sulfate aerosol are analyzed in a mixed state using Mie theory,external mixture model,uniform sphere model and the concentrically coated sphere model.Meanwhile,the influence of mixture method,volume content and particle size on the radiation properties mentioned above is discussed further.The results show that single scattering albedo and absorption efficiency factor are substantial sensitive to soot content and mixing patterns,and asymmetry factor and scattering efficiency factor are weak to the both,while extinction coefficient（extinction efficiency factor） are not sensitive to the both.The absorption of uniform mixture of soot-sulfate aerosol is the strongest,and then the coated sphere model.Among the three models,external mixture model is the lowest.In the coated sphere model,the absorption of soot coated with sulfate is larger than sulfate coated with soot.Radiation properties of small particle are substantial sensitive to the change of particle size,while the large particle is not quite.

关 键 词：黑碳-硫酸盐混合气溶胶 内外混合模型 辐射特性 

分 类 号：P422.9[天文地球—大气科学及气象学]