Deposition of ionic species and black carbon to the Arctic snowpack: combining snow pit observations with modeling
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Published:2019-08-15
Issue:15
Volume:19
Page:10361-10377
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ISSN:1680-7324
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Container-title:Atmospheric Chemistry and Physics
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language:en
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Short-container-title:Atmos. Chem. Phys.
Author:
Jacobi Hans-WernerORCID, Obleitner Friedrich, Da Costa Sophie, Ginot PatrickORCID, Eleftheriadis KonstantinosORCID, Aas Wenche, Zanatta MarcoORCID
Abstract
Abstract. Although aerosols in the Arctic have multiple and complex
impacts on the regional climate, their removal due to deposition is still
not well quantified. We combined meteorological, aerosol, precipitation, and
snowpack observations with simulations to derive information about the
deposition of sea salt components and black carbon (BC) from November 2011
to April 2012 to the Arctic snowpack at two locations close to
Ny-Ålesund, Svalbard. The dominating role of sea salt and the
contribution of dust for the composition of atmospheric aerosols were
reflected in the seasonal composition of the snowpack. The strong alignment
of the concentrations of the major sea salt components in the aerosols, the
precipitation, and the snowpack is linked to the importance of wet
deposition for transfer from the atmosphere to the snowpack. This
agreement was less strong for monthly snow budgets and deposition, indicating
important relocation of the impurities inside the snowpack after
deposition. Wet deposition was less important for the transfer of nitrate,
non-sea-salt sulfate, and BC to the snow during the winter period. The
average BC concentration in the snowpack remains small, with a limited
impact on snow albedo and melting. Nevertheless, the observations also
indicate an important redistribution of BC in the snowpack, leading to layers
with enhanced concentrations. The complex behavior of bromide due to
modifications during sea salt aerosol formation and remobilization in
the atmosphere and in the snow were not resolved because of the lack of
bromide measurements in aerosols and precipitation.
Funder
Austrian Science Fund Campus France Deutsche Forschungsgemeinschaft
Publisher
Copernicus GmbH
Subject
Atmospheric Science
Reference66 articles.
1. Aas, W., Solberg, S., Manø, S., and Yttri, K. E.: Monitoring of
long-range transported air pollutants, Annual report for 2012 (In
Norwegian), NILU Norwegian Institute for Air Research, Kjeller, NILU
Scientific Reports OR 14/2013, 216 pp., 2013. 2. Backman, J., Schmeisser, L., Virkkula, A., Ogren, J. A., Asmi, E.,
Starkweather, S., Sharma, S., Eleftheriadis, K., Uttal, T., Jefferson, A.,
Bergin, M., Makshtas, A., Tunved, P., and Fiebig, M.: On Aethalometer
measurement uncertainties and an instrument correction factor for the
Arctic, Atmos. Meas. Tech., 10, 5039–5062,
https://doi.org/10.5194/amt-10-5039-2017, 2017. 3. Bauer, S. E., Bausch, A., Nazarenko, L., Tsigaridis, K., Xu, B., Edwards, R.
Bisiaux, M., and McConnell, J.: Historical and future black carbon
deposition on the three ice caps: Ice core measurements and model
simulations from 1850 to 2100, J. Geophys. Res.-Atmos., 118, 7948–7961,
https://doi.org/10.1002/jgrd.50612, 2013. 4. Bernard, E., Friedt, J. M., Marlin, C., Tolle, F., Griselin, M., and Prokop,
A.: Investigating snowpack volumes and icing dynamics in the moraine of an
Arctic catchment using UAV/photogrammetry, Photogramm. Rec., 32, 497–512,
https://doi.org/10.1111/phor.12217, 2017 5. Björkman, M. P., Kühnel, R., Partridge, D. G., Roberts, T. J., Aas,
W., Mazzola, M., Viola, A., Hodson, A., Ström, J., and Isaksson, E.:
Nitrate dry deposition in Svalbard, Tellus B, 65, 19071,
https://doi.org/10.3402/tellusb.v65i0.19071, 2013.
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