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DOI | 10.1002/2017JD026776 |
Coupled retrieval of aerosol properties and land surface reflection using the Airborne Multiangle SpectroPolarimetric Imager | |
Xu, Feng1; van Harten, Gerard1; Diner, David J.1; Kalashnikova, Olga V.1; Seidel, Felix C.1; Bruegge, Carol J.1; Dubovik, Oleg2 | |
2017-07-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:13 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; France |
英文摘要 | The Airborne Multiangle SpectroPolarimetric Imager (AirMSPI) has been flying aboard the NASA ER-2 high-altitude aircraft since October 2010. In step-and-stare operation mode, AirMSPI acquires radiance and polarization data in bands centered at 355, 380, 445, 470*, 555, 660*, 865*, and 935 nm (*denotes polarimetric bands). The imaged area covers about 10 km by 11 km and is typically observed from nine viewing angles between +/-66 degrees off nadir. For a simultaneous retrieval of aerosol properties and surface reflection using AirMSPI, an efficient and flexible retrieval algorithm has been developed. It imposes multiple types of physical constraints on spectral and spatial variations of aerosol properties as well as spectral and temporal variations of surface reflection. Retrieval uncertainty is formulated by accounting for both instrumental errors and physical constraints. A hybrid Markov-chain/adding-doubling radiative transfer (RT) model is developed to combine the computational strengths of these two methods in modeling polarized RT in vertically inhomogeneous and homogeneous media, respectively. Our retrieval approach is tested using 27 AirMSPI data sets with low to moderately high aerosol loadings, acquired during four NASA field campaigns plus one AirMSPI preengineering test flight. The retrieval results including aerosol optical depth, single-scattering albedo, aerosol size and refractive index are compared with Aerosol Robotic Network reference data. We identify the best angular combinations for 2, 3, 5, and 7 angle observations from the retrieval quality assessment of various angular combinations. We also explore the benefits of polarimetric and multiangular measurements and target revisits in constraining aerosol property and surface reflection retrieval. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000407900300019 |
WOS关键词 | MARKOV-CHAIN FORMALISM ; VECTOR RADIATIVE-TRANSFER ; PHOTOPOLARIMETRIC MEASUREMENTS ; POLARIZED-LIGHT ; POLARIMETRIC MEASUREMENTS ; MULTIPLE-SCATTERING ; INTENSITY ; ALGORITHM ; RADIANCE ; CLOUD |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/33622 |
专题 | 气候变化 |
作者单位 | 1.CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA; 2.Univ Lille 1, CNRS, UMR8518, Lab Opt Atmospher, Villeneuve Dascq, France |
推荐引用方式 GB/T 7714 | Xu, Feng,van Harten, Gerard,Diner, David J.,et al. Coupled retrieval of aerosol properties and land surface reflection using the Airborne Multiangle SpectroPolarimetric Imager[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(13). |
APA | Xu, Feng.,van Harten, Gerard.,Diner, David J..,Kalashnikova, Olga V..,Seidel, Felix C..,...&Dubovik, Oleg.(2017).Coupled retrieval of aerosol properties and land surface reflection using the Airborne Multiangle SpectroPolarimetric Imager.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(13). |
MLA | Xu, Feng,et al."Coupled retrieval of aerosol properties and land surface reflection using the Airborne Multiangle SpectroPolarimetric Imager".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.13(2017). |
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