Vertical profiles of light scattering, light absorption, and single scattering albedo during the dry, biomass burning season in southern Africa and comparisons of in situ and remote sensing measurements of aerosol optical depths
Vertical profiles of light scattering, light absorption, and single scattering albedo during the dry, biomass burning season in southern Africa and comparisons of in situ and remote sensing measurements of aerosol optical depths
复制标题
DOI：
10.1029/2002jd002361
复制
发表时间：
2003-07
影响因子：
--
通讯作者：
B. Magi;P. Hobbs;B. Schmid;J. Redemann
中科院分区：
文献类型：
--
作者：
B. Magi;P. Hobbs;B. Schmid;J. Redemann
2002 年 3 月 22 日收到； 2002年6月18日修订； 2002 年 7 月 8 日接受； 2003 年 6 月 19 日发表。 [1] 在干燥的生物质燃烧季节，对南部非洲许多地点的气溶胶光散射、光吸收和单次散射反照率 (w0) 的垂直剖面进行机载原位测量。剖面的特征包括雾层、清洁空气槽以及从边界层进入自由对流层时光散射的显着减少。 w0 的频率分布反映了生物质燃烧产生的烟雾的强烈影响。例如，在浓烟从北部平流进入该地区期间，边界层中w0的平均值为0.81±0.02，而在这次入侵之前为0.89±0.03。现场测量得出的层气溶胶光学深度与飞机上太阳光度计测量的层气溶胶光学深度的比较显示出极好的一致性。索引术语：0305 大气成分和结构：气溶胶和颗粒（0345、4801）； 0345 大气成分和结构：污染——城市和区域（0305）； 3307 气象学和大气动力学：边界层过程； 3359 气象学和大气动力学：辐射过程；关键词：气溶胶、颗粒、颗粒的光学特性 引文：Magi、B. I.、P. V. Hobbs、B. Schmid 和 J. Redemann，南部非洲干燥生物质燃烧季节的光散射、光吸收和单散射反照率的垂直剖面以及气溶胶光学深度的原位和遥感测量的比较，J. Geophys。研究，108（D13），8504，doi：10.1029/2002JD002361，2003。
Received 22 March 2002; revised 18 June 2002; accepted 8 July 2002; published 19 June 2003. [1] Airborne in situ measurements of vertical profiles of aerosol light scattering, light absorption, and single scattering albedo (w0) are presented for a number of locations in southern Africa during the dry, biomass burning season. Features of the profiles include haze layers, clean air slots, and marked decreases in light scattering in passing from the boundary layer into the free troposphere. Frequency distributions of w0 reflect the strong influence of smoke from biomass burning. For example, during a period when heavy smoke was advected into the region from the north, the mean value of w0 in the boundary layer was 0.81 ± 0.02 compared to 0.89 ± 0.03 prior to this intrusion. Comparisons of layer aerosol optical depths derived from the in situ measurements with those measured by a Sun photometer aboard the aircraft show excellent agreement. INDEX TERMS: 0305 Atmospheric Composition and Structure: Aerosols and particles (0345, 4801); 0345 Atmospheric Composition and Structure: Pollution—urban and regional (0305); 3307 Meteorology and Atmospheric Dynamics: Boundary layer processes; 3359 Meteorology and Atmospheric Dynamics: Radiative processes; KEYWORDS: aerosols, particles, optical properties of particles Citation: Magi, B. I., P. V. Hobbs, B. Schmid, and J. Redemann, Vertical profiles of light scattering, light absorption, and single scattering albedo during the dry, biomass burning season in southern Africa and comparisons of in situ and remote sensing measurements of aerosol optical depths, J. Geophys. Res., 108(D13), 8504, doi:10.1029/2002JD002361, 2003.