Hasekamp Otto P, Landgraf Jochen
Netherlands Institute for Space Research, Sorbonnelaan 2, CA Utrecht, The Netherlands.
Appl Opt. 2007 Jun 1;46(16):3332-44. doi: 10.1364/ao.46.003332.
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.
我们研究了不同仪器概念用于反演陆地气溶胶特性的能力。研究发现，如果地表反射特性未知，那么只有强度和偏振的多视角测量能够为气候研究提供足够精度的相关气溶胶参数。此外，当以光谱采样点数量为代价增加视角数量或者反之亦然时，反演误差仅受到很小的影响。这表明在专用气溶胶仪器的设计上存在一定的自由度。在光谱采样和视角数量之间进行权衡的最终选择应考虑其他因素，如仪器复杂性和实现全球覆盖的能力。
