Fluorescent aerosols in the Arctic: Seasonality and sources
Aerosol-cloud interactions play an important role in regulating the Arctic climate. However, cloud formation processes in the Arctic remain poorly understood and information on aerosol properties in this environment are insufficient, especially during polar night (Schmale et al., 2021). Ice nucleati...
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ftinfoscience:oai:infoscience.epfl.ch:300257 2023-05-15T14:35:13+02:00 Fluorescent aerosols in the Arctic: Seasonality and sources Beck, Ivo Heutte, Benjamin Jérémy Laurent Angot, Hélène Pernov, Jakob Boyd Rolo, Margerida Creamean, Jessie Quéléver, Lauriane Jokinen, Tuija Laurila, Tiia Barry, Kevin Hill, Thomas Schmale, Julia 2023-02-17T09:52:18Z http://infoscience.epfl.ch/record/300257 unknown http://infoscience.epfl.ch/record/300257 http://infoscience.epfl.ch/record/300257 Text 2023 ftinfoscience 2023-02-20T00:39:14Z Aerosol-cloud interactions play an important role in regulating the Arctic climate. However, cloud formation processes in the Arctic remain poorly understood and information on aerosol properties in this environment are insufficient, especially during polar night (Schmale et al., 2021). Ice nucleating particles (INPs) contribute to the formation of ice crystals in clouds at temperatures above -38 °C (Kanji et al., 2017), for example in mixed phase clouds, i.e. clouds with liquid droplets and ice crystals, which are predominant in the Arctic. Therefore, the study of INP sources in the Arctic is crucial. One potential source of INPs are biological particles. They can be long-range transported or be emitted from local sources, such as blowing snow events, ice-free open ocean, open leads or melt ponds. Importantly, the future warmer Arctic will potentially have more melt ponds over a longer period in summer and more open water, hence the source strength of biological particles might change in the future. Therefore, it is important to understand the sources and processes of biological particles and their relation to INPs. Biological aerosols are difficult to measure directly. One method is through their fluorescent properties. Here we present first results of one year of fluorescent particle data, measured in the central Arctic during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) by a Wideband Integrated Bioaerosol Sensor (WIBS-NEO). We describe the seasonal cycle of fluorescent aerosols. Figure 1 shows that median fluorescent particle number concentrations peak in January, which is consistent with the onset of Arctic haze. The highest number concentrations were observed in summer, which could be an indicator of higher abundance of biological aerosols from local sources. We relate the data to potential biogenic sources, such as plankton or bacteria. Furthermore, we investigate potential weather-related processes leading to the presence of fluorescent particles, such as blowing ... Text Arctic polar night EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) Arctic |
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EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) |
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ftinfoscience |
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unknown |
description |
Aerosol-cloud interactions play an important role in regulating the Arctic climate. However, cloud formation processes in the Arctic remain poorly understood and information on aerosol properties in this environment are insufficient, especially during polar night (Schmale et al., 2021). Ice nucleating particles (INPs) contribute to the formation of ice crystals in clouds at temperatures above -38 °C (Kanji et al., 2017), for example in mixed phase clouds, i.e. clouds with liquid droplets and ice crystals, which are predominant in the Arctic. Therefore, the study of INP sources in the Arctic is crucial. One potential source of INPs are biological particles. They can be long-range transported or be emitted from local sources, such as blowing snow events, ice-free open ocean, open leads or melt ponds. Importantly, the future warmer Arctic will potentially have more melt ponds over a longer period in summer and more open water, hence the source strength of biological particles might change in the future. Therefore, it is important to understand the sources and processes of biological particles and their relation to INPs. Biological aerosols are difficult to measure directly. One method is through their fluorescent properties. Here we present first results of one year of fluorescent particle data, measured in the central Arctic during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) by a Wideband Integrated Bioaerosol Sensor (WIBS-NEO). We describe the seasonal cycle of fluorescent aerosols. Figure 1 shows that median fluorescent particle number concentrations peak in January, which is consistent with the onset of Arctic haze. The highest number concentrations were observed in summer, which could be an indicator of higher abundance of biological aerosols from local sources. We relate the data to potential biogenic sources, such as plankton or bacteria. Furthermore, we investigate potential weather-related processes leading to the presence of fluorescent particles, such as blowing ... |
format |
Text |
author |
Beck, Ivo Heutte, Benjamin Jérémy Laurent Angot, Hélène Pernov, Jakob Boyd Rolo, Margerida Creamean, Jessie Quéléver, Lauriane Jokinen, Tuija Laurila, Tiia Barry, Kevin Hill, Thomas Schmale, Julia |
spellingShingle |
Beck, Ivo Heutte, Benjamin Jérémy Laurent Angot, Hélène Pernov, Jakob Boyd Rolo, Margerida Creamean, Jessie Quéléver, Lauriane Jokinen, Tuija Laurila, Tiia Barry, Kevin Hill, Thomas Schmale, Julia Fluorescent aerosols in the Arctic: Seasonality and sources |
author_facet |
Beck, Ivo Heutte, Benjamin Jérémy Laurent Angot, Hélène Pernov, Jakob Boyd Rolo, Margerida Creamean, Jessie Quéléver, Lauriane Jokinen, Tuija Laurila, Tiia Barry, Kevin Hill, Thomas Schmale, Julia |
author_sort |
Beck, Ivo |
title |
Fluorescent aerosols in the Arctic: Seasonality and sources |
title_short |
Fluorescent aerosols in the Arctic: Seasonality and sources |
title_full |
Fluorescent aerosols in the Arctic: Seasonality and sources |
title_fullStr |
Fluorescent aerosols in the Arctic: Seasonality and sources |
title_full_unstemmed |
Fluorescent aerosols in the Arctic: Seasonality and sources |
title_sort |
fluorescent aerosols in the arctic: seasonality and sources |
publishDate |
2023 |
url |
http://infoscience.epfl.ch/record/300257 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic polar night |
genre_facet |
Arctic polar night |
op_source |
http://infoscience.epfl.ch/record/300257 |
op_relation |
http://infoscience.epfl.ch/record/300257 |
_version_ |
1766308086705815552 |