How important are future marine and shipping aerosol emissions in a warming Arctic summer and autumn?
Future sea ice retreat in the Arctic in summer and autumn is expected to affect both natural and anthropogenic aerosol emissions: sea ice acts as a barrier between the ocean and the atmosphere, and reducing it increases dimethyl sulfide and sea salt emissions. Additionally, a decrease in the area an...
Published in: | Atmospheric Chemistry and Physics |
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ftunivreading:oai:centaur.reading.ac.uk:91887 2024-09-15T17:35:48+00:00 How important are future marine and shipping aerosol emissions in a warming Arctic summer and autumn? Gilgen, Anina Huang, Wan Ting Katty Ickes, Luisa Neubauer, David Lohmann, Ulrike 2018-07-24 text https://centaur.reading.ac.uk/91887/ https://centaur.reading.ac.uk/91887/1/acp-18-10521-2018.pdf https://centaur.reading.ac.uk/91887/2/acp-18-10521-2018-corrigendum.pdf https://doi.org/10.5194/acp-18-10521-2018 en eng EGU https://centaur.reading.ac.uk/91887/1/acp-18-10521-2018.pdf https://centaur.reading.ac.uk/91887/2/acp-18-10521-2018-corrigendum.pdf Gilgen, A., Huang, W. T. K. <https://centaur.reading.ac.uk/view/creators/90010494.html>, Ickes, L. orcid:0000-0001-8772-4164 , Neubauer, D. orcid:0000-0002-9869-3946 and Lohmann, U. orcid:0000-0001-8885-3785 (2018) How important are future marine and shipping aerosol emissions in a warming Arctic summer and autumn? Atmospheric Chemistry and Physics, 18 (14). pp. 10521-10555. ISSN 1680-7324 doi: https://doi.org/10.5194/acp-18-10521-2018 <https://doi.org/10.5194/acp-18-10521-2018> cc_by_4 Article PeerReviewed 2018 ftunivreading https://doi.org/10.5194/acp-18-10521-2018 2024-06-25T15:04:04Z Future sea ice retreat in the Arctic in summer and autumn is expected to affect both natural and anthropogenic aerosol emissions: sea ice acts as a barrier between the ocean and the atmosphere, and reducing it increases dimethyl sulfide and sea salt emissions. Additionally, a decrease in the area and thickness of sea ice could lead to enhanced Arctic ship traffic, for example due to shorter routes of cargo ships. Changes in the emissions of aerosol particles can then influence cloud properties, precipitation, surface albedo, and radiation. Next to changes in aerosol emissions, clouds will also be affected by increases in Arctic temperatures and humidities. In this study, we quantify how future aerosol radiative forcings and cloud radiative effects might change in the Arctic in late summer (July–August) and early autumn (September–October). Simulations were conducted for the years 2004 and 2050 with the global aerosol–climate model ECHAM6-HAM2. For 2050, simulations with and without additional ship emissions in the Arctic were carried out to quantify the impact of these emissions on the Arctic climate. In the future, sea salt as well as dimethyl sulfide emissions and burdens will increase in the Arctic. The increase in cloud condensation nuclei, which is due to changes in aerosol particles and meteorology, will enhance cloud droplet number concentrations over the Arctic Ocean (+10 % in late summer and +29 % in early autumn; in-cloud values averaged between 75 and 90∘ N). Furthermore, both liquid and total water path will increase (+10 % and +8 % in late summer; +34 % and +26 % in early autumn) since the specific humidity will be enhanced due to higher temperatures and the exposure of the ocean's surface. Changes in both aerosol radiative forcings and cloud radiative effects at the top of the atmosphere will not be dominated by the aerosol particles and clouds themselves but by the decrease in surface albedo (and by the increase in surface temperature for the longwave cloud radiative effect in early autumn). ... Article in Journal/Newspaper albedo Arctic Arctic Ocean Sea ice CentAUR: Central Archive at the University of Reading Atmospheric Chemistry and Physics 18 14 10521 10555 |
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Open Polar |
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CentAUR: Central Archive at the University of Reading |
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ftunivreading |
language |
English |
description |
Future sea ice retreat in the Arctic in summer and autumn is expected to affect both natural and anthropogenic aerosol emissions: sea ice acts as a barrier between the ocean and the atmosphere, and reducing it increases dimethyl sulfide and sea salt emissions. Additionally, a decrease in the area and thickness of sea ice could lead to enhanced Arctic ship traffic, for example due to shorter routes of cargo ships. Changes in the emissions of aerosol particles can then influence cloud properties, precipitation, surface albedo, and radiation. Next to changes in aerosol emissions, clouds will also be affected by increases in Arctic temperatures and humidities. In this study, we quantify how future aerosol radiative forcings and cloud radiative effects might change in the Arctic in late summer (July–August) and early autumn (September–October). Simulations were conducted for the years 2004 and 2050 with the global aerosol–climate model ECHAM6-HAM2. For 2050, simulations with and without additional ship emissions in the Arctic were carried out to quantify the impact of these emissions on the Arctic climate. In the future, sea salt as well as dimethyl sulfide emissions and burdens will increase in the Arctic. The increase in cloud condensation nuclei, which is due to changes in aerosol particles and meteorology, will enhance cloud droplet number concentrations over the Arctic Ocean (+10 % in late summer and +29 % in early autumn; in-cloud values averaged between 75 and 90∘ N). Furthermore, both liquid and total water path will increase (+10 % and +8 % in late summer; +34 % and +26 % in early autumn) since the specific humidity will be enhanced due to higher temperatures and the exposure of the ocean's surface. Changes in both aerosol radiative forcings and cloud radiative effects at the top of the atmosphere will not be dominated by the aerosol particles and clouds themselves but by the decrease in surface albedo (and by the increase in surface temperature for the longwave cloud radiative effect in early autumn). ... |
format |
Article in Journal/Newspaper |
author |
Gilgen, Anina Huang, Wan Ting Katty Ickes, Luisa Neubauer, David Lohmann, Ulrike |
spellingShingle |
Gilgen, Anina Huang, Wan Ting Katty Ickes, Luisa Neubauer, David Lohmann, Ulrike How important are future marine and shipping aerosol emissions in a warming Arctic summer and autumn? |
author_facet |
Gilgen, Anina Huang, Wan Ting Katty Ickes, Luisa Neubauer, David Lohmann, Ulrike |
author_sort |
Gilgen, Anina |
title |
How important are future marine and shipping aerosol emissions in a warming Arctic summer and autumn? |
title_short |
How important are future marine and shipping aerosol emissions in a warming Arctic summer and autumn? |
title_full |
How important are future marine and shipping aerosol emissions in a warming Arctic summer and autumn? |
title_fullStr |
How important are future marine and shipping aerosol emissions in a warming Arctic summer and autumn? |
title_full_unstemmed |
How important are future marine and shipping aerosol emissions in a warming Arctic summer and autumn? |
title_sort |
how important are future marine and shipping aerosol emissions in a warming arctic summer and autumn? |
publisher |
EGU |
publishDate |
2018 |
url |
https://centaur.reading.ac.uk/91887/ https://centaur.reading.ac.uk/91887/1/acp-18-10521-2018.pdf https://centaur.reading.ac.uk/91887/2/acp-18-10521-2018-corrigendum.pdf https://doi.org/10.5194/acp-18-10521-2018 |
genre |
albedo Arctic Arctic Ocean Sea ice |
genre_facet |
albedo Arctic Arctic Ocean Sea ice |
op_relation |
https://centaur.reading.ac.uk/91887/1/acp-18-10521-2018.pdf https://centaur.reading.ac.uk/91887/2/acp-18-10521-2018-corrigendum.pdf Gilgen, A., Huang, W. T. K. <https://centaur.reading.ac.uk/view/creators/90010494.html>, Ickes, L. orcid:0000-0001-8772-4164 , Neubauer, D. orcid:0000-0002-9869-3946 and Lohmann, U. orcid:0000-0001-8885-3785 (2018) How important are future marine and shipping aerosol emissions in a warming Arctic summer and autumn? Atmospheric Chemistry and Physics, 18 (14). pp. 10521-10555. ISSN 1680-7324 doi: https://doi.org/10.5194/acp-18-10521-2018 <https://doi.org/10.5194/acp-18-10521-2018> |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.5194/acp-18-10521-2018 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
18 |
container_issue |
14 |
container_start_page |
10521 |
op_container_end_page |
10555 |
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1810479580642803712 |