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| Titel |
Mixing of anthropogenic dust and carbonaceous aerosols in seasonal snow on snow albedo reduction in 2014 China survey |
| VerfasserIn |
Xin Wang, Jianping Huang, Wei Pu |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250127477
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| Publikation (Nr.) |
 EGU/EGU2016-7358.pdf |
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| Zusammenfassung |
| Anthropogenic dusts produced from the affected by human activities derived from
the industrial areas and carbonaceous aerosols (black carbon and organic carbon)
deposited into snow or ice core via wet and dry deposition play key roles to the
regional and global climate. Recently, a China survey was performed to measure the
concentrations of insoluble light-absorbing particles (ILAP) in seasonal snow across
northern China in January and February of 2014. The results indicate that the higher
concentration of NO3- and SO42- and heavy metals of Zn, Pb, Cd, Ni, and Cu are likely to
be attributed to enhanced local industrial emissions due to human activities. The
emissions from fossil fuel combustion and biomass burning are likely to be important
for the chemical elements in the seasonal snow with long-range transport, while
medium enrichment factors of Mg, Ca, and Al were predominantly associated with
soil dust, which is the most important natural source. There are large ranges of the
BC and AD in seasonal snow over northeast China because of the anthropogenic
emissions, which are caused by human activities. In addition, although the values of the
snow albedo by model simulations are little higher in the visible to near-infrared
wavelength than that during the China survey, the surface snow albedo by field campaign
measurements have good agreement with the model simulations in the visible wavelength. |
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