Concentrations of 210Pb and 210Po in the atmosphere of Ny-Alesund, Svalbard (scientific paper)
Daily aerosol samples were collected from 24 February to 14 March 1995 in Ny-Ålesund, Svalbard. The samples were analyzed for ^<210>Pb and ^<210>Po radioactivities, and the following results and conclusions were obtained. Atmospheric ^<210>Pb concentrations varied from 82.5±7.1μBq/...
| Main Authors: | , , , , |
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| Format: | Report |
| Language: | English |
| Published: |
Faculty of Science, Yamagata University/Faculty of Science, Yamagata University/The Graduate University for Advanced Studies, National Institute of Polar Research/National Institute of Polar Research/National Institute of Polar Research
1996
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| Subjects: | |
| Online Access: | https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2286 http://id.nii.ac.jp/1291/00002286/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2286&item_no=1&attribute_id=18&file_no=1 |
| Summary: | Daily aerosol samples were collected from 24 February to 14 March 1995 in Ny-Ålesund, Svalbard. The samples were analyzed for ^<210>Pb and ^<210>Po radioactivities, and the following results and conclusions were obtained. Atmospheric ^<210>Pb concentrations varied from 82.5±7.1μBq/m^3 to 1204±130μBq/m^3. According to the correlation analysis, the ^<210>Pb concentrations positively correlated to the gradient of atmospheric pressure. The result indicates that the ^<210>Pb concentrations increase as a function of air mass exchange over the Svalbard region. Residence times of the aerosols in Ny-Ålesund, which were calculated by using the ^<210>Po/^<210>Pb activity ratios, were approximately twice values obtained in the mid-latitude region. This may be the outcome of less efficient removal processes of aerosols from the atmosphere, e.g. coagulation and precipitation, owing to the low temperature conditions. |
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