| DOI: | 10.1016/j.atmosenv.2013.11.016
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| Scopus记录号: | 2-s2.0-84889678335
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| 论文题名: | Assessment of CALIPSO attenuated backscatter and aerosol retrievals with a combined ground-based multi-wavelength lidar and sunphotometer measurement |
| 作者: | Wu Y; , Cordero L; , Gross B; , Moshary F; , Ahmed S
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| 刊名: | Atmospheric Environment
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| ISSN: | 0168-2563
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| EISSN: | 1573-515X
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| 出版年: | 2014
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| 卷: | 84 | | 起始页码: | 44
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| 结束页码: | 53
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| 语种: | 英语
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| 英文关键词: | Aerosol layer
; Extinction and backscatter
; Lidar
; Type classification
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| Scopus关键词: | Aerosols
; Algorithms
; Backscattering
; Dust
; Light extinction
; Loading
; Aerosol layers
; Backscatter coefficients
; Backscatter profiles
; Detection sensitivity
; Ground-based lidars
; Statistical comparisons
; Strong correlation
; Type classifications
; Optical radar
; aerosol property
; algorithm
; atmospheric plume
; backscatter
; CALIPSO
; extinction coefficient
; ground-based measurement
; lidar
; metropolitan area
; photometer
; smoke
; aerosol
; algorithm
; altitude
; article
; cloud
; depolarization
; dust
; geometry
; measurement
; noise
; optical depth
; particle size
; photometer
; plume
; priority journal
; smoke
; sunphotometer
; troposphere
; New York [New York (STT)]
; New York [United States]
; United States
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| Scopus学科分类: | Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
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| 英文摘要: | CALIPSO Level-1 attenuated backscatter and Level-2 aerosol products (Version-3.01) are evaluated with a combined ground-based lidar and AERONET-sunphotometer measurements in the daytime over the New York metropolitan area. To assess the CALIPSO Level-1 product, we combine the co-located ground-lidar and sunphotometer to derive aerosol extinction and backscatter profiles, and then simulate the CALIPSO equivalent attenuated backscatter coefficients. Direct statistical comparisons show a strong correlation (R=0.92) and modest relative errors. Both dust and smoke plume events are focused to evaluate CALIPSO Level-2 aerosol layer products. The CALIPSO algorithms for cloud-aerosol discrimination and aerosol type classification are shown for the most part to work well, with a few exceptions in cases of aloft plumes with high aerosol loading. Small partitions of dense smoke are misclassified as the clouds or polluted dusts in the CALIPSO product. The aerosol extinction and backscatter coefficients are generally consistent between the CALIPSO and ground-based retrievals, but both geometric thickness and column optical depths of aerosol layers from CALIPSO products are underestimated. In addition, we find that some weakly scattering aerosol layers are clearly displayed by the ground-based lidar, but not identified by the current CALIPSO algorithm due to the detection sensitivity issue. © 2013 Elsevier Ltd. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/80951
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Optical Remote Sensing Lab and NOAA-CREST, City College of New York, New York, NY 10031, United States
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| Recommended Citation: | |
Wu Y,, Cordero L,, Gross B,et al. Assessment of CALIPSO attenuated backscatter and aerosol retrievals with a combined ground-based multi-wavelength lidar and sunphotometer measurement[J]. Atmospheric Environment,2014-01-01,84
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