The Arctic Temperature Response to Global and Regional Anthropogenic Sulfate Aerosols
The mechanisms behind Arctic warming and associated climate changes are difficult to discern. Also, the complex local processes and feedbacks like aerosol-cloud-climate interactions are yet to be quantified. Here, using the Community Earth System Model (CAM5) experiments, with emission enhancement o...
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ftdoajarticles:oai:doaj.org/article:47efa5ccc43f4b2d95ff3a95b5cb9257 2023-05-15T14:36:04+02:00 The Arctic Temperature Response to Global and Regional Anthropogenic Sulfate Aerosols Acharya Asutosh Suvarna Fadnavis M. Nuncio Rolf Müller Sarat C. Tripathy 2021-11-01T00:00:00Z https://doi.org/10.3389/fenvs.2021.766538 https://doaj.org/article/47efa5ccc43f4b2d95ff3a95b5cb9257 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fenvs.2021.766538/full https://doaj.org/toc/2296-665X 2296-665X doi:10.3389/fenvs.2021.766538 https://doaj.org/article/47efa5ccc43f4b2d95ff3a95b5cb9257 Frontiers in Environmental Science, Vol 9 (2021) arctic temperature transport of sulfate aerosols cloud radiative forcing climate change arctic summer cooling and winter warming Environmental sciences GE1-350 article 2021 ftdoajarticles https://doi.org/10.3389/fenvs.2021.766538 2022-12-31T13:57:18Z The mechanisms behind Arctic warming and associated climate changes are difficult to discern. Also, the complex local processes and feedbacks like aerosol-cloud-climate interactions are yet to be quantified. Here, using the Community Earth System Model (CAM5) experiments, with emission enhancement of anthropogenic sulfate 1) five-fold globally, 2) ten-times over Asia, and 3) ten-times over Europe we show that regional emissions of sulfate aerosols alter seasonal warming over the Arctic, i.e., colder summer and warmer winter. European emissions play a dominant role in cooling during the summer season (0.7 K), while Asian emissions dominate the warming during the winter season (maximum ∼0.6 K) in the Arctic surface. The cooling/warming is associated with a negative/positive cloud radiative forcing. During the summer season increase in low–mid level clouds, induced by sulfate emissions, favours the solar dimming effect that reduces the downwelling radiation to the surface and thus leads to surface cooling. Warmer winters are associated with enhanced high-level clouds that induce a positive radiative forcing at the top of the atmosphere. This study points to the importance of international strategies being implemented to control sulfate emissions to combat air pollution. Such strategies will also affect the Arctic cooling/warming associated with a cloud radiative forcing caused by sulfate emission change. Article in Journal/Newspaper Arctic Climate change Directory of Open Access Journals: DOAJ Articles Arctic Frontiers in Environmental Science 9 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
arctic temperature transport of sulfate aerosols cloud radiative forcing climate change arctic summer cooling and winter warming Environmental sciences GE1-350 |
spellingShingle |
arctic temperature transport of sulfate aerosols cloud radiative forcing climate change arctic summer cooling and winter warming Environmental sciences GE1-350 Acharya Asutosh Suvarna Fadnavis M. Nuncio Rolf Müller Sarat C. Tripathy The Arctic Temperature Response to Global and Regional Anthropogenic Sulfate Aerosols |
topic_facet |
arctic temperature transport of sulfate aerosols cloud radiative forcing climate change arctic summer cooling and winter warming Environmental sciences GE1-350 |
description |
The mechanisms behind Arctic warming and associated climate changes are difficult to discern. Also, the complex local processes and feedbacks like aerosol-cloud-climate interactions are yet to be quantified. Here, using the Community Earth System Model (CAM5) experiments, with emission enhancement of anthropogenic sulfate 1) five-fold globally, 2) ten-times over Asia, and 3) ten-times over Europe we show that regional emissions of sulfate aerosols alter seasonal warming over the Arctic, i.e., colder summer and warmer winter. European emissions play a dominant role in cooling during the summer season (0.7 K), while Asian emissions dominate the warming during the winter season (maximum ∼0.6 K) in the Arctic surface. The cooling/warming is associated with a negative/positive cloud radiative forcing. During the summer season increase in low–mid level clouds, induced by sulfate emissions, favours the solar dimming effect that reduces the downwelling radiation to the surface and thus leads to surface cooling. Warmer winters are associated with enhanced high-level clouds that induce a positive radiative forcing at the top of the atmosphere. This study points to the importance of international strategies being implemented to control sulfate emissions to combat air pollution. Such strategies will also affect the Arctic cooling/warming associated with a cloud radiative forcing caused by sulfate emission change. |
format |
Article in Journal/Newspaper |
author |
Acharya Asutosh Suvarna Fadnavis M. Nuncio Rolf Müller Sarat C. Tripathy |
author_facet |
Acharya Asutosh Suvarna Fadnavis M. Nuncio Rolf Müller Sarat C. Tripathy |
author_sort |
Acharya Asutosh |
title |
The Arctic Temperature Response to Global and Regional Anthropogenic Sulfate Aerosols |
title_short |
The Arctic Temperature Response to Global and Regional Anthropogenic Sulfate Aerosols |
title_full |
The Arctic Temperature Response to Global and Regional Anthropogenic Sulfate Aerosols |
title_fullStr |
The Arctic Temperature Response to Global and Regional Anthropogenic Sulfate Aerosols |
title_full_unstemmed |
The Arctic Temperature Response to Global and Regional Anthropogenic Sulfate Aerosols |
title_sort |
arctic temperature response to global and regional anthropogenic sulfate aerosols |
publisher |
Frontiers Media S.A. |
publishDate |
2021 |
url |
https://doi.org/10.3389/fenvs.2021.766538 https://doaj.org/article/47efa5ccc43f4b2d95ff3a95b5cb9257 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_source |
Frontiers in Environmental Science, Vol 9 (2021) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fenvs.2021.766538/full https://doaj.org/toc/2296-665X 2296-665X doi:10.3389/fenvs.2021.766538 https://doaj.org/article/47efa5ccc43f4b2d95ff3a95b5cb9257 |
op_doi |
https://doi.org/10.3389/fenvs.2021.766538 |
container_title |
Frontiers in Environmental Science |
container_volume |
9 |
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1766308762272923648 |