Acta Optica Sinica, Volume. 37, Issue 12, 1228001(2017)
Method for Measuring Surface Albedo Based on Airborne Platform
The surface albedo is a prerequisite for the research of the information such as land radiation budget, regional and global climate, and geomorphology. Therefore, its precise measurement is the premise and guarantee of relevant research. Due to the influence of atmospheric absorption, the surface albedo cannot be directly measured. Therefore, the method of measuring vertical downward and upward scattered light and combining SCIATRAN radiative transfer model is adopted to obtain the surface albedo. Based on this method, the observation experiment is carried out on the airborne platform. The vertical downward and upward radiance values are obtained. The iterative retrieval method is used to obtain the surface albedo of the area from Shijiazhuang to Baoding in the ultraviolet band from 350 nm to 395 nm. And the surface albedos of different underlying surfaces and different bands are compared. The transition from the center to the edge of the city is analyzed in detail. The results show that the surface albedo of ultraviolet waveband ranging from 350 nm to 395 nm goes up slightly with the increase of the wavelength, which is in good agreement with medium resolution imaging spectrometer (MODIS) data. In addition, the comparison of different observation areas shows that the surface albedo of urban area is larger than that of farmland, and the surface albedo of the center of the city is about 0.014 higher than the edge of the city. The difference also goes up with the increase of the wavelength.
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Taiping Yang, Fuqi Si, Minjie Zhao, Ke Dou, Haijin Zhou, Yuhan Luo, Wenqing Liu. Method for Measuring Surface Albedo Based on Airborne Platform[J]. Acta Optica Sinica, 2017, 37(12): 1228001
Category: Remote Sensing and Sensors
Received: Jun. 29, 2017
Accepted: --
Published Online: Sep. 6, 2018
The Author Email: Si Fuqi (sifuqi@aiofm.ac.cn)