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Remote Sens. 2017, 9(10), 979;

Remote Sensing of Aerosol Optical Depth Using an Airborne Polarimeter over North China

School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo 454000, China
Department of Geomantic Engineering, Bülent Ecevit University, Zonguldak 67100, Turkey
Key Laboratory of Optical Calibration and Characterization, Chinese Academy of Sciences, Hefei 230031, China
Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
Authors to whom correspondence should be addressed.
Received: 28 June 2017 / Revised: 20 September 2017 / Accepted: 20 September 2017 / Published: 22 September 2017
(This article belongs to the Special Issue Aerosol Remote Sensing)
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The airborne Atmosphere Multi-angle Polarization Radiometer (AMPR) was employed to perform airborne measurements over North China between 2012 and 2016. Seven flights and synchronous ground-based observations were acquired. These data were used to test the sensor’s measurements and associated aerosol retrieval algorithm. According to the AMPR measurements, a successive surface-atmosphere decoupling based algorithm was developed to retrieve the aerosol optical depth (AOD). It works via an iteration method, and the lookup table was employed in the aerosol inversion. Throughout the results of the AMPR retrievals, the surface polarized reflectances derived from air- and ground-based instruments were well matched; the measured and simulated reflectances at the aircraft level, which were simulated based on in situ sun photometer observed aerosol properties, were in good agreement; and the AOD measurements were validated against the automatic sun-photometer (CE318) at the nearest time and location. The AOD results were close; the average deviation was less than 0.03. The MODIS AODs were also employed to test the AMPR retrievals, and they showed the same trend. These results illustrate that (i) the successive surface-atmosphere decoupling method in the retrieved program completed its mission and (ii) the aerosol retrieval method has its rationality and potential ability in the regionally accurate remote sensing of aerosol. View Full-Text
Keywords: aerosol optical depth; polarization; airborne observation; AMPR; North China aerosol optical depth; polarization; airborne observation; AMPR; North China

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Wang, H.; Yang, L.; Deng, A.; Du, W.; Liu, P.; Sun, X. Remote Sensing of Aerosol Optical Depth Using an Airborne Polarimeter over North China. Remote Sens. 2017, 9, 979.

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