Title
Improving Remote Sensing of Aerosol Optical Depth over Land by Polarimetric Measurements at 1640 nm: Airborne Test in North China
Abstract
An improved aerosol retrieval algorithm based on the Advanced Multi-angular Polarized Radiometer (AMPR) is presented to illustrate the utility of additional 1640-nm observations for measuring aerosol optical depth (AOD) over land using look-up table approaches. Spectral neutrality of the polarized surface reflectance over visible to short-wavelength infrared bands is verified, and the 1640-nm measurements corrected for atmospheric effects are used to estimate the polarized surface reflectance at shorter wavelengths. The AMPR measurements over the Beijing-Tianjin-Hebei region in north China reveal that the polarized surface reflectance of 670, 865 and 1640 nm are highly correlated with correlation slopes close to one (0.985 and 1.03) when the scattering angle is less than 145 degrees. The 1640-nm measurements are then employed to estimate polarized surface reflectance at shorter wavelengths for each single viewing direction, which are then used to improve the retrieval of AOD over land. The comparison between AMPR retrievals and ground-based Sun-sky radiometer measurements during three experimental flights illustrates that this approach retrieves AOD at 865 nm with uncertainties ranging from 0.01 to 0.06, while AOD varies from 0.05 to 0.17.
Year
DOI
Venue
2015
10.3390/rs70506240
REMOTE SENSING
Field
DocType
Volume
Optical depth,Polarimetry,Remote sensing,Aerosol,Optics,Ranging,Scattering,Infrared,Geology,Wavelength,Radiometer
Journal
7
Issue
ISSN
Citations 
5
2072-4292
3
PageRank 
References 
Authors
0.47
5
11
Name
Order
Citations
PageRank
lili qie172.01
Zhengqiang Li22015.82
Xiaobing Sun320928.35
Bin Sun45212.22
Donghui Li583.16
Zhao Liu62510.73
Wei Huang77824.31
Han Wang86632.33
Xingfeng Chen9106.13
Weizhen Hou10176.02
yanli qiao1131.15