Retrieval of aerosol properties over land surfaces: capabilities of multiple-viewing-angle intensity and polarization measurements.
Retrieval of aerosol properties over land surfaces: capabilities of multiple-viewing-angle intensity and polarization measurements.
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DOI：
10.1364/ao.46.003332
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发表时间：
2007-06
期刊：
影响因子：
1.9
通讯作者：
O. Hasekamp;J. Landgraf
中科院分区：
文献类型：
--
作者：
O. Hasekamp;J. Landgraf
我们调查的能力，不同的仪器概念的检索气溶胶属性在陆地上。结果发现，如果表面反射特性是未知的，只有多视角测量的强度和偏振能够提供足够的精度为气候研究的相关气溶胶参数。此外，检索错误的影响很小，当视角的数量增加的光谱采样点的数量的成本，反之亦然。这表明专用气溶胶仪器的仪器设计有一定的自由度。光谱采样和视角数量之间的权衡的最终选择应考虑其他因素，如仪器的复杂性和获得全球覆盖的能力。
We investigate the capabilities of different instrument concepts for the retrieval of aerosol properties over land. It was found that, if the surface reflection properties are unknown, only multiple-viewing-angle measurements of both intensity and polarization are able to provide the relevant aerosol parameters with sufficient accuracy for climate research. Furthermore, retrieval errors are only little affected when the number of viewing angles is increased at the cost of the number of spectral sampling points and vice versa. This indicates that there is a certain amount of freedom for the instrument design of dedicated aerosol instruments. The final choice on the trade-off between the spectral sampling and the number of viewing angles should be made taking other factors into account, such as instrument complexity and the ability to obtain global coverage.