Inversion of Aerosol Optical Depth over Land Surface from Airborne Polarimetric Measurements | |
Wang Han1; Yang Lei-ku1; Du Wei-bing1; Liu Pei1; Sun Xiao-bing2,3 | |
刊名 | SPECTROSCOPY AND SPECTRAL ANALYSIS |
2018-04-01 | |
卷号 | 38期号:4页码:1019-1024 |
关键词 | Aerosol Optical depth Polarization Airborne observation |
ISSN号 | 1000-0593 |
DOI | 10.3964/j.issn.1000-0593(2018)04-1019-06 |
英文摘要 | The diversity of land surfaceleads to an increase of the uncertainty in surface reflectance calculation, whichreduces the-accuracy of land-atmospheric decoupling, and then of the aerosol retrieval. The multi-spectral, multi-angle and polarized information, which can be provided by the Atmosphere Multi-angle Polarization Radiometer (AMPR), is helpful to solve the problem. The behavior of aerosol scattering amongdifferent wavelengths is smooth. At the same time the land surface polarized reflectance does not show any dependence in the measurement bands. Based on these conclusions, we developed a method to separate land surface and atmosphericradiation by successive atmospheric correction. Further on, the aerosol retrieval algorithm was build. In the algorithm, the aerosol optical thickness was retrieved at 665 and 865 nm, while thesurface polarized reflectance was reobtained at 1 640 nm by atmospheric correction. The atmospheric correction (1 640 nm) and aerosol retrieval (665 and 865 nm) form a cycle. Then, an iteration method was employed and it approaches to the real radiant values of atmosphere and land surface step by step. At last, we retrieved aerosol optical depth from a look-up table which was builtby 6 fine and 6 coarseaerosol modes. The AMPR have performedat least 5 flights mission over Beijing, Tianjin and Tangshan region. Data of theseobservations were used to verify the algorithm and it was found that the AOD retrieved from AMPR and CE318 have good coherence. When the AOD is lower than 0.5, the average deviation is below 0.03. |
WOS关键词 | POLARIZED MEASUREMENTS ; RETRIEVAL ; CHINA |
WOS研究方向 | Spectroscopy |
语种 | 英语 |
出版者 | OFFICE SPECTROSCOPY & SPECTRAL ANALYSIS |
WOS记录号 | WOS:000430996100005 |
内容类型 | 期刊论文 |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/35359] |
专题 | 合肥物质科学研究院_中科院安徽光学精密机械研究所 |
通讯作者 | Wang Han |
作者单位 | 1.Henan Polytech Univ, Sch Surveying & Land Informat Engn, Jiaozuo 454000, Peoples R China 2.Chinese Acad Sci, Key Lab Opt Calibrat & Characterizat, Hefei 230031, Anhui, Peoples R China 3.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei 230031, Anhui, Peoples R China |
推荐引用方式 GB/T 7714 | Wang Han,Yang Lei-ku,Du Wei-bing,et al. Inversion of Aerosol Optical Depth over Land Surface from Airborne Polarimetric Measurements[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2018,38(4):1019-1024. |
APA | Wang Han,Yang Lei-ku,Du Wei-bing,Liu Pei,&Sun Xiao-bing.(2018).Inversion of Aerosol Optical Depth over Land Surface from Airborne Polarimetric Measurements.SPECTROSCOPY AND SPECTRAL ANALYSIS,38(4),1019-1024. |
MLA | Wang Han,et al."Inversion of Aerosol Optical Depth over Land Surface from Airborne Polarimetric Measurements".SPECTROSCOPY AND SPECTRAL ANALYSIS 38.4(2018):1019-1024. |
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