气候变化领域集成服务门户(CCPortal): Measurement report: Comparison of airborne, in situ measured, lidar-based, and modeled aerosol optical properties in the central European background -identifying sources of deviations

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DOI	10.5194/acp-21-16745-2021
	Measurement report: Comparison of airborne, in situ measured, lidar-based, and modeled aerosol optical properties in the central European background -identifying sources of deviations
	Düsing S.; Ansmann A.; Baars H.; Corbin J.C.; Denjean C.; Gysel-Beer M.; Müller T.; Poulain L.; Siebert H.; Spindler G.; Tuch T.; Wehner B.; Wiedensohler A.
发表日期	2021
ISSN	1680-7316
起始页码	16745
结束页码	16773
卷号	21 期号:22
英文摘要	A unique data set derived from remote sensing, airborne, and ground-based in situ measurements is presented. This measurement report highlights the known complexity of comparing multiple aerosol optical parameters examined with different approaches considering different states of humidification and atmospheric aerosol concentrations. Mie-theory-based modeled aerosol optical properties are compared with the respective results of airborne and ground-based in situ measurements and remote sensing (lidar and photometer) performed at the rural central European observatory at Melpitz, Germany. Calculated extinction-to-backscatter ratios (lidar ratios) were in the range of previously reported values. However, the lidar ratio is a function of the aerosol type and the relative humidity. The particle lidar ratio (LR) dependence on relative humidity was quantified and followed the trend found in previous studies. We present a fit function for the lidar wavelengths of 355, 532, and 1064 nm with an underlying equation of fLR(RH, γ(λ)) = fLR(RH = 0,λ)×(1-RH)-γ(λ), with the derived estimates of γ(355 nm) = 0.29 (±0.01), γ(532 nm) = 0.48 (±0.01), and γ(1064 nm) = 0.31 (±0.01) for central European aerosol. This parameterization might be used in the data analysis of elastic-backscatter lidar observations or lidar-ratio-based aerosol typing efforts. Our study shows that the used aerosol model could reproduce the in situ measurements of the aerosol particle light extinction coefficients (measured at dry conditions) within 13 %. Although the model reproduced the in situ measured aerosol particle light absorption coefficients within a reasonable range, we identified many sources for significant uncertainties in the simulations, such as the unknown aerosol mixing state, brown carbon (organic material) fraction, and the unknown aerosol mixing state wavelength-dependent refractive index. The modeled ambient-state aerosol particle light extinction and backscatter coefficients were smaller than the measured ones. However, depending on the prevailing aerosol conditions, an overlap of the uncertainty ranges of both approaches was achieved. © 2021 Sebastian Düsing et al.
语种	英语
scopus关键词	aerosol; brown carbon; data set; lidar; remote sensing; Central Europe; Germany; Melpitz; Saxony
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246435
作者单位	Experimental Aerosol and Cloud Microphysics, Leibniz Institute for Tropospheric Research, Leipzig, 04318, Germany; Remote Sensing of Atmospheric Processes, Leibniz Institute for Tropospheric Research, Leipzig, 04318, Germany; Atmospheric Chemistry, Leibniz Institute for Tropospheric Research, Leipzig, 04318, Germany; Laboratory of Atmospheric Chemistry, Paul Scherrer Institute PSI, Villigen, 5232, Switzerland; CNRM, Université de Toulouse Météo-France, CNRS, Toulouse, France; Metrology Research Centre, National Research Council Canada, 1200 Montréal Road, Ottawa, ON K1A 0R6, Canada
推荐引用方式 GB/T 7714	Düsing S.,Ansmann A.,Baars H.,et al. Measurement report: Comparison of airborne, in situ measured, lidar-based, and modeled aerosol optical properties in the central European background -identifying sources of deviations[J],2021,21(22).
APA	Düsing S..,Ansmann A..,Baars H..,Corbin J.C..,Denjean C..,...&Wiedensohler A..(2021).Measurement report: Comparison of airborne, in situ measured, lidar-based, and modeled aerosol optical properties in the central European background -identifying sources of deviations.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(22).
MLA	Düsing S.,et al."Measurement report: Comparison of airborne, in situ measured, lidar-based, and modeled aerosol optical properties in the central European background -identifying sources of deviations".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.22(2021).