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Radiative absorptio...
Radiative absorption enhancement from coatings on black carbon aerosols
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Cui, Xinjuan (författare)
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Wang, Xinfeng (författare)
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Yang, Lingxiao (författare)
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Chen, Bing (författare)
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Chen, Jianmin (författare)
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- Andersson, August (författare)
- Stockholms universitet,Institutionen för miljövetenskap och analytisk kemi
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- Gustafsson, Örjan (författare)
- Stockholms universitet,Institutionen för miljövetenskap och analytisk kemi
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(creator_code:org_t)
- Elsevier BV, 2016
- 2016
- Engelska.
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Ingår i: Science of the Total Environment. - : Elsevier BV. - 0048-9697 .- 1879-1026. ; 551, s. 51-56
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The radiative absorption enhancement of ambient black carbon (BC), by light-refractive coatings of atmospheric aerosols, constitutes a large uncertainty in estimates of climate forcing. The direct measurements of radiative absorption enhancement require the experimentally-removing the coating materials in ambient BC-containing aerosols, which remains a challenge. Here, the absorption enhancement of the BC core by non-absorbing aerosol coatings was quantified using a two-step removal of both inorganic and organic matter coatings of ambient aerosols. The mass absorption cross-section (MAC) of decoated/pure atmospheric BC aerosols of 4.4 +/- 0.8 m(2)g(-1) was enhanced to 9.6 +/- 1.8 m(2)g(-1) at 678-nm wavelength for ambiently-coated BC aerosols at a rural Northern China site. The enhancement of MAC (E-MAC) rises from 1.4 +/- 0.3 in fresh combustion emissions to similar to 3 for aged ambient China aerosols. The three-week high-intensity campaign observed an average E-MAC of 2.25 +/- 0.55, and sulfates were primary drivers of the enhanced BC absorption.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Nyckelord
- Black carbon
- Aerosol mixing states
- Lensing effect
- Radiative absorption
- China
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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