Seasonal variation of aerosol water uptake and its impact on the direct radiative effect at Ny-Ålesund, Svalbard
In this study we investigated the impact of water uptake by aerosol particles in ambient atmosphere on their optical properties and their direct radiative effect (ADRE, W m−2) in the Arctic at Ny-Ålesund, Svalbard, during 2008. To achieve this, we combined three models, a hygroscopic growth model, a...
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Copernicus Publications
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Online Access: | https://epic.awi.de/id/eprint/36101/ https://epic.awi.de/id/eprint/36101/1/Rastak_et_al_ACP2014.pdf http://www.atmos-chem-phys.net/14/7445/2014/acp-14-7445-2014.html https://hdl.handle.net/10013/epic.43985 https://hdl.handle.net/10013/epic.43985.d001 |
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ftawi:oai:epic.awi.de:36101 2024-09-15T18:27:16+00:00 Seasonal variation of aerosol water uptake and its impact on the direct radiative effect at Ny-Ålesund, Svalbard Rastak, Narges Silvergren, Sanna Zieger, Paul Wideqvist, Ulla Ström, Johan Svenningsson, Birgitta Maturilli, Marion Tesche, Matthias Ekman, Annica M.L. Tunved, Peter Riipinen, Ilona 2014-07-21 application/pdf https://epic.awi.de/id/eprint/36101/ https://epic.awi.de/id/eprint/36101/1/Rastak_et_al_ACP2014.pdf http://www.atmos-chem-phys.net/14/7445/2014/acp-14-7445-2014.html https://hdl.handle.net/10013/epic.43985 https://hdl.handle.net/10013/epic.43985.d001 unknown Copernicus Publications https://epic.awi.de/id/eprint/36101/1/Rastak_et_al_ACP2014.pdf https://hdl.handle.net/10013/epic.43985.d001 Rastak, N. , Silvergren, S. , Zieger, P. , Wideqvist, U. , Ström, J. , Svenningsson, B. , Maturilli, M. orcid:0000-0001-6818-7383 , Tesche, M. , Ekman, A. M. , Tunved, P. and Riipinen, I. (2014) Seasonal variation of aerosol water uptake and its impact on the direct radiative effect at Ny-Ålesund, Svalbard , Atmospheric Chemistry and Physics, 14 (14), pp. 7445-7460 . doi:10.5194/acp-14-7445-2014 <https://doi.org/10.5194/acp-14-7445-2014> , hdl:10013/epic.43985 EPIC3Atmospheric Chemistry and Physics, Copernicus Publications, 14(14), pp. 7445-7460, ISSN: 1680-7316 Article isiRev 2014 ftawi https://doi.org/10.5194/acp-14-7445-2014 2024-06-24T04:09:53Z In this study we investigated the impact of water uptake by aerosol particles in ambient atmosphere on their optical properties and their direct radiative effect (ADRE, W m−2) in the Arctic at Ny-Ålesund, Svalbard, during 2008. To achieve this, we combined three models, a hygroscopic growth model, a Mie model and a radiative transfer model, with an extensive set of observational data. We found that the seasonal variation of dry aerosol scattering coefficients showed minimum values during the summer season and the beginning of fall (July-August-September), when small particles (< 100 nm in diameter) dominate the aerosol number size distribution. The maximum scattering by dry particles was observed during the Arctic haze period (March-April-May) when the average size of the particles was larger. Considering the hygroscopic growth of aerosol particles in the ambient atmosphere had a significant impact on the aerosol scattering coefficients: the aerosol scattering coefficients were enhanced by on average a factor of 4.30 ± 2.26 (mean ± standard deviation), with lower values during the haze period (March-April-May) as compared to summer and fall. Hygroscopic growth of aerosol particles was found to cause 1.6 to 3.7 times more negative ADRE at the surface, with the smallest effect during the haze period (March-April-May) and the highest during late summer and beginning of fall (July-August-September). Article in Journal/Newspaper Ny Ålesund Ny-Ålesund Svalbard Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Atmospheric Chemistry and Physics 14 14 7445 7460 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
In this study we investigated the impact of water uptake by aerosol particles in ambient atmosphere on their optical properties and their direct radiative effect (ADRE, W m−2) in the Arctic at Ny-Ålesund, Svalbard, during 2008. To achieve this, we combined three models, a hygroscopic growth model, a Mie model and a radiative transfer model, with an extensive set of observational data. We found that the seasonal variation of dry aerosol scattering coefficients showed minimum values during the summer season and the beginning of fall (July-August-September), when small particles (< 100 nm in diameter) dominate the aerosol number size distribution. The maximum scattering by dry particles was observed during the Arctic haze period (March-April-May) when the average size of the particles was larger. Considering the hygroscopic growth of aerosol particles in the ambient atmosphere had a significant impact on the aerosol scattering coefficients: the aerosol scattering coefficients were enhanced by on average a factor of 4.30 ± 2.26 (mean ± standard deviation), with lower values during the haze period (March-April-May) as compared to summer and fall. Hygroscopic growth of aerosol particles was found to cause 1.6 to 3.7 times more negative ADRE at the surface, with the smallest effect during the haze period (March-April-May) and the highest during late summer and beginning of fall (July-August-September). |
format |
Article in Journal/Newspaper |
author |
Rastak, Narges Silvergren, Sanna Zieger, Paul Wideqvist, Ulla Ström, Johan Svenningsson, Birgitta Maturilli, Marion Tesche, Matthias Ekman, Annica M.L. Tunved, Peter Riipinen, Ilona |
spellingShingle |
Rastak, Narges Silvergren, Sanna Zieger, Paul Wideqvist, Ulla Ström, Johan Svenningsson, Birgitta Maturilli, Marion Tesche, Matthias Ekman, Annica M.L. Tunved, Peter Riipinen, Ilona Seasonal variation of aerosol water uptake and its impact on the direct radiative effect at Ny-Ålesund, Svalbard |
author_facet |
Rastak, Narges Silvergren, Sanna Zieger, Paul Wideqvist, Ulla Ström, Johan Svenningsson, Birgitta Maturilli, Marion Tesche, Matthias Ekman, Annica M.L. Tunved, Peter Riipinen, Ilona |
author_sort |
Rastak, Narges |
title |
Seasonal variation of aerosol water uptake and its impact on the direct radiative effect at Ny-Ålesund, Svalbard |
title_short |
Seasonal variation of aerosol water uptake and its impact on the direct radiative effect at Ny-Ålesund, Svalbard |
title_full |
Seasonal variation of aerosol water uptake and its impact on the direct radiative effect at Ny-Ålesund, Svalbard |
title_fullStr |
Seasonal variation of aerosol water uptake and its impact on the direct radiative effect at Ny-Ålesund, Svalbard |
title_full_unstemmed |
Seasonal variation of aerosol water uptake and its impact on the direct radiative effect at Ny-Ålesund, Svalbard |
title_sort |
seasonal variation of aerosol water uptake and its impact on the direct radiative effect at ny-ålesund, svalbard |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://epic.awi.de/id/eprint/36101/ https://epic.awi.de/id/eprint/36101/1/Rastak_et_al_ACP2014.pdf http://www.atmos-chem-phys.net/14/7445/2014/acp-14-7445-2014.html https://hdl.handle.net/10013/epic.43985 https://hdl.handle.net/10013/epic.43985.d001 |
genre |
Ny Ålesund Ny-Ålesund Svalbard |
genre_facet |
Ny Ålesund Ny-Ålesund Svalbard |
op_source |
EPIC3Atmospheric Chemistry and Physics, Copernicus Publications, 14(14), pp. 7445-7460, ISSN: 1680-7316 |
op_relation |
https://epic.awi.de/id/eprint/36101/1/Rastak_et_al_ACP2014.pdf https://hdl.handle.net/10013/epic.43985.d001 Rastak, N. , Silvergren, S. , Zieger, P. , Wideqvist, U. , Ström, J. , Svenningsson, B. , Maturilli, M. orcid:0000-0001-6818-7383 , Tesche, M. , Ekman, A. M. , Tunved, P. and Riipinen, I. (2014) Seasonal variation of aerosol water uptake and its impact on the direct radiative effect at Ny-Ålesund, Svalbard , Atmospheric Chemistry and Physics, 14 (14), pp. 7445-7460 . doi:10.5194/acp-14-7445-2014 <https://doi.org/10.5194/acp-14-7445-2014> , hdl:10013/epic.43985 |
op_doi |
https://doi.org/10.5194/acp-14-7445-2014 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
14 |
container_issue |
14 |
container_start_page |
7445 |
op_container_end_page |
7460 |
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1810468428926943232 |