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| Titel |
Properties of aerosols and their wet deposition in the arctic spring during ASTAR2004 at Ny-Alesund, Svalbard |
| VerfasserIn |
S. Yamagata, D. Kobayashi, S. Ohta, N. Murao, M. Shiobara, M. Wada, M. Yabuki, H. Konishi, T. Yamanouchi |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 9, no. 1 ; Nr. 9, no. 1 (2009-01-14), S.261-270 |
| Datensatznummer |
250006644
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| Publikation (Nr.) |
 copernicus.org/acp-9-261-2009.pdf |
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| Zusammenfassung |
| During the period of scientific campaign "Arctic Study of Tropospheric
Aerosols, Clouds and Radiation 2004" (ASTAR2004), precipitation samples were
collected in late spring at Ny-Alesund, Svalbard and their ionic components
were analyzed in parallel with the measurement of properties of atmospheric
aerosol particles at the same place. Backward trajectory analyses indicated
that the air mass above the observatory initially dominated by air masses
from the Arctic Ocean, then those from western Siberia and later those from
Greenland and the Arctic Ocean. In the measurement period, six precipitation
samples were obtained and five of them were analyzed their ionic components
by ionchromatography. The concentrations of nss-sulphate in precipitations
were between 1.8 and 24.6 ppm from which the scavenging ratio and scavenging
coefficients were calculated using the data such as the concentrations of
nss-sulphate in aerosol particles, amounts of precipitations, and the
heights of precipitations obtained from radar echo data. The scavenging
ratio ranged from 1.0×106 to 17×106 which are
comparable values reported in other areas. A detailed comparison between
precipitation events and the number concentration of aerosol particles
obtained from optical particle counters suggests that the type of
precipitations, i.e. rain or snow, significantly affects the number
concentrations of aerosol particles. |
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