Measurement report: High Arctic aerosol hygroscopicity at sub- and supersaturated conditions during spring and summer
<p>Aerosol hygroscopic growth and cloud droplet formation influence the radiation transfer budget of the atmosphere and thereby the climate. In the Arctic, these aerosol properties may have a more pronounced effect on the climate compared to the midlatitudes. Hygroscopic growth and cloud conde...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2023-04-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://acp.copernicus.org/articles/23/4931/2023/acp-23-4931-2023.pdf |
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| author | A. Massling R. Lange R. Lange J. B. Pernov J. B. Pernov U. Gosewinkel L.-L. Sørensen H. Skov |
| author_facet | A. Massling R. Lange R. Lange J. B. Pernov J. B. Pernov U. Gosewinkel L.-L. Sørensen H. Skov |
| author_sort | A. Massling |
| collection | DOAJ |
| description | <p>Aerosol hygroscopic growth and cloud droplet formation influence the radiation transfer budget of the atmosphere and thereby the climate. In the Arctic, these aerosol properties may have a more pronounced effect on the climate compared to the midlatitudes. Hygroscopic growth and cloud condensation nuclei (CCN) concentrations of high Arctic aerosols were
measured during two field studies in the spring and summer of 2016. The
study site was the Villum Research Station (Villum) at Station Nord in the
northeastern region of Greenland. Aerosol hygroscopic growth was measured
with a hygroscopic tandem differential mobility analyzer (HTDMA) over a
total of 23 d, and CCN concentrations were measured over a period of 95 d. Continuous particle number size distributions were recorded, facilitating calculations of aerosol CCN activation diameters and aerosol
<span class="inline-formula"><i>κ</i></span> values. In spring, average CCN concentrations, at supersaturations (SSs) of 0.1 % to 0.3 %, ranged from 53.7 to 85.3 cm<span class="inline-formula"><sup>−3</sup></span>, with critical activation diameters ranging from 130.2 to 80.2 nm and <span class="inline-formula"><i>κ</i><sub>CCN</sub></span> ranging from 0.28–0.35. In summer, average CCN concentrations were 20.8 to 47.6 cm<span class="inline-formula"><sup>−3</sup></span>, while critical activation diameters and <span class="inline-formula"><i>κ</i><sub>CCN</sub></span> were from 137.1 to 76.7 nm and 0.23–0.35, respectively. Mean particle hygroscopic growth factors ranged from 1.60 to 1.75 at 90 % relative humidity in spring, while values between 1.47 and 1.67 were observed in summer depending on the initial dry size. Although the summer aerosol number size distributions were characterized by frequent new particle formation events, the CCN population at cloud-relevant supersaturations was determined by accumulation-mode aerosols.</p> |
| first_indexed | 2024-04-09T15:27:03Z |
| format | Article |
| id | doaj.art-7cef775a90fe4093a556437eaa7e17d7 |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-04-09T15:27:03Z |
| publishDate | 2023-04-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-7cef775a90fe4093a556437eaa7e17d72023-04-28T12:50:28ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242023-04-01234931495310.5194/acp-23-4931-2023Measurement report: High Arctic aerosol hygroscopicity at sub- and supersaturated conditions during spring and summerA. Massling0R. Lange1R. Lange2J. B. Pernov3J. B. Pernov4U. Gosewinkel5L.-L. Sørensen6H. Skov7Department of Environmental Science, iClimate, Aarhus University, 4000 Roskilde, DenmarkDepartment of Environmental Science, iClimate, Aarhus University, 4000 Roskilde, DenmarkROCKWOOL Group, 2640 Hedehusene, DenmarkDepartment of Environmental Science, iClimate, Aarhus University, 4000 Roskilde, DenmarkExtreme Environments Research Laboratory, École Polytechnique Fédérale de Lausanne, 1951 Sion, SwitzerlandDepartment of Environmental Science, iClimate, Aarhus University, 4000 Roskilde, DenmarkDepartment of Environmental Science, iClimate, Aarhus University, 4000 Roskilde, DenmarkDepartment of Environmental Science, iClimate, Aarhus University, 4000 Roskilde, Denmark<p>Aerosol hygroscopic growth and cloud droplet formation influence the radiation transfer budget of the atmosphere and thereby the climate. In the Arctic, these aerosol properties may have a more pronounced effect on the climate compared to the midlatitudes. Hygroscopic growth and cloud condensation nuclei (CCN) concentrations of high Arctic aerosols were measured during two field studies in the spring and summer of 2016. The study site was the Villum Research Station (Villum) at Station Nord in the northeastern region of Greenland. Aerosol hygroscopic growth was measured with a hygroscopic tandem differential mobility analyzer (HTDMA) over a total of 23 d, and CCN concentrations were measured over a period of 95 d. Continuous particle number size distributions were recorded, facilitating calculations of aerosol CCN activation diameters and aerosol <span class="inline-formula"><i>κ</i></span> values. In spring, average CCN concentrations, at supersaturations (SSs) of 0.1 % to 0.3 %, ranged from 53.7 to 85.3 cm<span class="inline-formula"><sup>−3</sup></span>, with critical activation diameters ranging from 130.2 to 80.2 nm and <span class="inline-formula"><i>κ</i><sub>CCN</sub></span> ranging from 0.28–0.35. In summer, average CCN concentrations were 20.8 to 47.6 cm<span class="inline-formula"><sup>−3</sup></span>, while critical activation diameters and <span class="inline-formula"><i>κ</i><sub>CCN</sub></span> were from 137.1 to 76.7 nm and 0.23–0.35, respectively. Mean particle hygroscopic growth factors ranged from 1.60 to 1.75 at 90 % relative humidity in spring, while values between 1.47 and 1.67 were observed in summer depending on the initial dry size. Although the summer aerosol number size distributions were characterized by frequent new particle formation events, the CCN population at cloud-relevant supersaturations was determined by accumulation-mode aerosols.</p>https://acp.copernicus.org/articles/23/4931/2023/acp-23-4931-2023.pdf |
| spellingShingle | A. Massling R. Lange R. Lange J. B. Pernov J. B. Pernov U. Gosewinkel L.-L. Sørensen H. Skov Measurement report: High Arctic aerosol hygroscopicity at sub- and supersaturated conditions during spring and summer Atmospheric Chemistry and Physics |
| title | Measurement report: High Arctic aerosol hygroscopicity at sub- and supersaturated conditions during spring and summer |
| title_full | Measurement report: High Arctic aerosol hygroscopicity at sub- and supersaturated conditions during spring and summer |
| title_fullStr | Measurement report: High Arctic aerosol hygroscopicity at sub- and supersaturated conditions during spring and summer |
| title_full_unstemmed | Measurement report: High Arctic aerosol hygroscopicity at sub- and supersaturated conditions during spring and summer |
| title_short | Measurement report: High Arctic aerosol hygroscopicity at sub- and supersaturated conditions during spring and summer |
| title_sort | measurement report high arctic aerosol hygroscopicity at sub and supersaturated conditions during spring and summer |
| url | https://acp.copernicus.org/articles/23/4931/2023/acp-23-4931-2023.pdf |
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