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首页> 外文会议>Remote Sensing of the Atmosphere and Clouds; Proceedings of SPIE-The International Society for Optical Engineering; vol.6408 >Current and future advances in optical multiangle remote sensing of aerosols and clouds based on Terra/MISR experience
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Current and future advances in optical multiangle remote sensing of aerosols and clouds based on Terra/MISR experience

机译：基于Terra / MISR经验的气溶胶和云光学多角度遥感的当前和未来进展

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摘要

Through acquisition of well-calibrated near-nadir and oblique-angle imagery (0° - 70° zenith angles) at moderately high spatial resolution (275 m - 1.1 km), the Multi-angle Imaging SpectroRadiometer (MISR) experiment aboard NASA's Terra satellite has taken atmospheric remote sensing in new directions. Retrieval algorithms that were largely conceptual prior to Terra launch in 1999 have led to publicly available aerosol and cloud products with direct application to global climate and particulate air quality research. Automated algorithms making use of stereoscopic parallax, time lapse among the nine angular views, and the variation in radiance with view angle, scattering angle, and wavelength (446-866 nm) make possible unique data sets including geometric cloud and aerosol plume heights derived independently of emissivity or temperature assumptions; height-resolved cloud-tracked winds; and aerosol optical depth and particle type over a wide variety of surfaces including bright desert source regions. To illustrate these capabilities, examples of regional and global MISR data products, quantitative evaluations of product accuracies based on comparisons with independent data sources, and time series showing seasonal and interannual variations are presented here. Future sensor improvements aimed at building upon MISR heritage, including expanding the spectral coverage to ultraviolet and shortwave infrared wavelengths, adding polarization channels, and widening the sensor swath, are also discussed.
机译：通过以适当的高空间分辨率（275 m-1.1 km）采集经过良好校准的近天底和斜角图像（0°-70°天顶角），NASA的Terra卫星上的多角度成像光谱辐射仪（MISR）进行了实验大气遥感已朝着新的方向发展。检索算法在1999年Terra推出之前主要是概念性的，已导致可公开获得的气溶胶和云产品直接应用于全球气候和微粒空气质量研究。利用立体视差，九个角度视图之间的时间流逝以及辐射度随视角，散射角和波长（446-866 nm）的变化而自动生成的算法，使得独特的数据集成为可能，包括独立导出的几何云和气溶胶羽流高度发射率或温度假设；高度解析的云迹风；在包括明亮沙漠源地区在内的各种表面上的气溶胶光学深度和颗粒类型。为了说明这些功能，这里提供了区域和全球MISR数据产品的示例，基于与独立数据源比较的产品准确性的定量评估以及显示季节性和年际变化的时间序列。还讨论了以MISR传统为基础的未来传感器改进，包括将光谱范围扩展到紫外和短波红外波长，增加偏振通道以及扩大传感器覆盖范围。

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