Three-wavelength cavity-enhanced albedometer for measuring wavelength-dependent optical properties and single-scattering albedo of aerosols

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dc.contributor.authorXu, Xuezhe
dc.contributor.authorZhao, Weixiong
dc.contributor.authorFang, Bo
dc.contributor.authorZhou, Jiacheng
dc.contributor.authorWang, Shuo
dc.contributor.authorZhang, Weijun
dc.contributor.authorVenables, Dean S.
dc.contributor.authorChen, Weidong
dc.contributor.funderNational Natural Science Foundation of Chinaen
dc.contributor.funderNatural Science Foundation of Anhui Provinceen
dc.contributor.funderYouth Innovation Promotion Association of the Chinese Academy of Sciencesen
dc.date.accessioned2019-05-15T05:05:32Z
dc.date.available2019-05-15T05:05:32Z
dc.date.issued2018-12-10
dc.description.abstractThe spectral dependence of aerosol light absorption (αabs) and single-scattering albedo—[ω, defined as the ratio of the scattering (αscat) and extinction coefficients (αext = αabs + αscat)]—has proven effective in classifying dominant aerosol types. It is also helpful in understanding aerosol sources, transformation, climate and environmental effects, testing aerosol models, and improving the retrieval accuracy of satellite and remote sensing data. Despite the significant progress that has been made with measurement of light absorption and ω, many of the reported instruments either operate at a fixed wavelength or can only measure a single optical parameter. Quantitative multi-parameter wavelength-dependent measurement remains a challenge. In this work, a three-wavelength cavity-enhanced albedometer was developed. The albedometer can measure multiple optical parameters, αext, αscat, αabs, and ω, at λ = 365, 532, and 660 nm, in real time. The instrument’s performance was evaluated using four different type laboratory generated aerosols, including polystyrene latex spheres (PSL, non-absorbing); ammonium sulfate (AS, non-absorbing); suwannee river fulvic acid (SRFA, slightly absorbing; a proxy for light absorbing organic aerosol); and nigrosin (strongly absorbing).en
dc.description.sponsorshipNational Natural Science Foundation of China (41330424); Natural Science Foundation of Anhui Province (1508085J03); Youth Innovation Promotion Association of the Chinese Academy of Sciences (CAS) (2016383).en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationXu, X., Zhao, W., Fang, B., Zhou, J., Wang, S., Zhang, W., Venables, D.S. and Chen, W., 2018. Three-wavelength cavity-enhanced albedometer for measuring wavelength-dependent optical properties and single-scattering albedo of aerosols. Optics express, 26(25), pp. 33484-33500. DOI: 10.1364/OE.26.033484en
dc.identifier.doi10.1364/OE.26.033484en
dc.identifier.endpage33500en
dc.identifier.issn1094-4087
dc.identifier.issued25en
dc.identifier.journaltitleOptics Expressen
dc.identifier.startpage33484en
dc.identifier.urihttps://hdl.handle.net/10468/7904
dc.identifier.volume26en
dc.language.isoenen
dc.publisherOSA - The Optical Societyen
dc.relation.urihttp://www.opticsexpress.org/abstract.cfm?URI=oe-26-25-33484
dc.rights© 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreementen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectAbsorption coefficienten
dc.subjectExtinction coefficientsen
dc.subjectOceanic opticsen
dc.subjectRemote sensingen
dc.subjectScattering measurementen
dc.subjectSupercontinuum lasersen
dc.subject~Chemistry - Journal Articles~en
dc.titleThree-wavelength cavity-enhanced albedometer for measuring wavelength-dependent optical properties and single-scattering albedo of aerosolsen
dc.typeArticle (peer-reviewed)en
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