In situ and remote‐sensing measurements of the mean microphysical and optical properties of industrial pollution aerosol during ADRIEX
In situ and remote‐sensing measurements of the mean microphysical and optical properties of industrial pollution aerosol during ADRIEX
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ADRIEX 期间工业污染气溶胶平均微物理和光学特性的原位和遥感测量
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
N. Bellouin
中科院分区：
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作者：
S. R. Osborne;J. Haywood;N. Bellouin
我们提出了一个总结的主要物理和光学特性的气溶胶粒子使用FAAM的BAE-146仪表飞机在ADRIEX在2004年8月27日和9月6日之间，增强了太阳光度计，激光雷达和卫星检索。人为气溶胶（主要来自工业源）的观测集中在亚得里亚海北方和靠近气溶胶源的波河流域。另外还在黑海上空进行了一次飞行，以比较东欧和西欧的污染情况。测量结果表明，在0.55 µm波长下，干气溶胶粒子的单次散射系数在0.89和0.97之间变化很大，在污染的低层自由对流层内的活动平均值为0.92。虽然气溶胶浓度每天和在个别日子里变化很大，但气溶胶粒径分布的形状在整个实验中相对一致，在陆地和海洋上没有观察到可检测的变化。有证据表明，海洋边界层内的污染气溶胶比在高架层年轻。气溶胶体积分布的趋势与多站点AERONET辐射测量观测结果一致。来自飞机测量的气溶胶光学厚度显示出一致的偏差，低于AERONET和激光雷达地面辐射测量观测值，差异可以通过气溶胶柱负载的局部变化和一些飞机仪器人为因素来解释。利用Terra和Aqua卫星的中分辨率成像光谱仪数据反演气溶胶光学厚度和精细模式（半径<0.5 µm）分数对光学厚度的贡献，结果显示与AERONET和飞机测量结果具有合理的一致性。© Crown Copyright 2007.经HMSO控制员许可转载。出版社：John Wiley & Sons，Ltd
We present a summary of the principal physical and optical properties of aerosol particles using the FAAM BAE‐146 instrumented aircraft during ADRIEX between 27 August and 6 September 2004, augmented by sunphotometer, lidar and satellite retrievals. Observations of anthropogenic aerosol, principally from industrial sources, were concentrated over the northern Adriatic Sea and over the Po Valley close to the aerosol sources. An additional flight was also carried out over the Black Sea to compare east and west European pollution. Measurements show the single‐scattering albedo of dry aerosol particles to vary considerably between 0.89 and 0.97 at a wavelength of 0.55 µm, with a campaign mean within the polluted lower free troposphere of 0.92. Although aerosol concentrations varied significantly from day to day and during individual days, the shape of the aerosol size distribution was relatively consistent through the experiment, with no detectable change observed over land and over sea. There is evidence to suggest that the pollution aerosol within the marine boundary layer was younger than that in the elevated layer. Trends in the aerosol volume distribution show consistency with multiple‐site AERONET radiometric observations. The aerosol optical depths derived from aircraft measurements show a consistent bias to lower values than both the AERONET and lidar ground‐based radiometric observations, differences which can be explained by local variations in the aerosol column loading and by some aircraft instrumental artefacts. Retrievals of the aerosol optical depth and fine‐mode (<0.5 µm radius) fraction contribution to the optical depth using MODIS data from the Terra and Aqua satellites show a reasonable level of agreement with the AERONET and aircraft measurements. © Crown Copyright 2007. Reproduced with the permission of the Controller of HMSO. Published by John Wiley & Sons, Ltd