Biogenic Sources of Ice Nucleating Particles at the High Arctic Site Villum Research Station
11 pages, supporting information https://doi.org/10.1021/acs.est.9b00991
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American Chemical Society
2019-05
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dig-icm-es-10261-1925522022-09-19T09:04:47Z Biogenic Sources of Ice Nucleating Particles at the High Arctic Site Villum Research Station Šantl-Temkiv, Tina Lange, R. Beddows, D.C.S. Rauter, Urška Pilgaard, Stephanie Dall'Osto, Manuel Gunde-Cimerman, Nina Massling, Andreas Wex, Heike 11 pages, supporting information https://doi.org/10.1021/acs.est.9b00991 The radiative balance in the Arctic region is sensitive to in-cloud processes, which principally depend on atmospheric aerosols, including ice nucleating particles (INPs). High temperature INPs (active at ≥−15 °C) are common in the Arctic. While laboratory and limited in situ studies show that the high-temperature active INPs are associated with bioaerosols and biogenic compounds, there is still little quantitative insight into the Arctic biogenic INPs and bioaerosols. We measured concentrations of bioaerosols, bacteria, and biogenic INPs at the Villum Research Station (VRS, Station Nord) in a large number of snow (15) and air (51) samples. We found that INPs active at high subzero temperatures were present both in spring and summer. Air INP concentrations were higher in summer (18 INP m–3 at ≥−10 °C) than in spring (<4 INP m–3 at ≥−10 °C), when abundant INPs were found in snowfall (1.4 INP mL–1 at ≥−10 °C). Also, in summer, a significantly higher number of microbial and bacterial cells were present compared to the spring. A large proportion (60%–100%) of INPs that were active between −6 °C and −20 °C could be deactivated by heating to 100 °C, which was indicative of their predominantly proteinaceous origin. In addition, there was a significant linear regression between the summer air concentrations of INPs active at ≥−10 °C and air concentrations of bacterial-marker-genes (p < 0.0001, R2 = 0.999, n = 6), pointing at bacterial cells as the source of high-temperature active INPs. In conclusion, the majority of INPs was of proteinaceous, and possibly of bacterial, origin and was found in air during summer and in snowfall during springtime Peer Reviewed 2019-10-14T07:46:36Z 2019-10-14T07:46:36Z 2019-05 2019-10-14T07:46:36Z artículo http://purl.org/coar/resource_type/c_6501 issn: 0013-936X e-issn: 1520-5851 Environmental Science and Technology 53(18): 10580-10590 (2019) http://hdl.handle.net/10261/192552 10.1021/acs.est.9b00991 https://doi.org/10.1021/acs.est.9b00991 Sí none American Chemical Society |
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11 pages, supporting information https://doi.org/10.1021/acs.est.9b00991 |
| format |
artículo |
| author |
Šantl-Temkiv, Tina Lange, R. Beddows, D.C.S. Rauter, Urška Pilgaard, Stephanie Dall'Osto, Manuel Gunde-Cimerman, Nina Massling, Andreas Wex, Heike |
| spellingShingle |
Šantl-Temkiv, Tina Lange, R. Beddows, D.C.S. Rauter, Urška Pilgaard, Stephanie Dall'Osto, Manuel Gunde-Cimerman, Nina Massling, Andreas Wex, Heike Biogenic Sources of Ice Nucleating Particles at the High Arctic Site Villum Research Station |
| author_facet |
Šantl-Temkiv, Tina Lange, R. Beddows, D.C.S. Rauter, Urška Pilgaard, Stephanie Dall'Osto, Manuel Gunde-Cimerman, Nina Massling, Andreas Wex, Heike |
| author_sort |
Šantl-Temkiv, Tina |
| title |
Biogenic Sources of Ice Nucleating Particles at the High Arctic Site Villum Research Station |
| title_short |
Biogenic Sources of Ice Nucleating Particles at the High Arctic Site Villum Research Station |
| title_full |
Biogenic Sources of Ice Nucleating Particles at the High Arctic Site Villum Research Station |
| title_fullStr |
Biogenic Sources of Ice Nucleating Particles at the High Arctic Site Villum Research Station |
| title_full_unstemmed |
Biogenic Sources of Ice Nucleating Particles at the High Arctic Site Villum Research Station |
| title_sort |
biogenic sources of ice nucleating particles at the high arctic site villum research station |
| publisher |
American Chemical Society |
| publishDate |
2019-05 |
| url |
http://hdl.handle.net/10261/192552 |
| work_keys_str_mv |
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1777667009600815104 |