High-Latitude Stratospheric Aerosol Geoengineering Can Be More Effective if Injection Is Limited to Spring
Stratospheric aerosol geoengineering focused on the Arctic could substantially reduce local and worldwide impacts of anthropogenic global warming. Because the Arctic receives little sunlight during the winter, stratospheric aerosols present in the winter at high latitudes have little impact on the c...
Published in: | Geophysical Research Letters |
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Online Access: | http://www.osti.gov/servlets/purl/1811261 https://www.osti.gov/biblio/1811261 https://doi.org/10.1029/2021gl092696 |
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ftosti:oai:osti.gov:1811261 2023-07-30T04:01:15+02:00 High-Latitude Stratospheric Aerosol Geoengineering Can Be More Effective if Injection Is Limited to Spring Lee, Walker Raymond MacMartin, Douglas G. Visioni, Daniele Kravitz, Ben 2022-05-03 application/pdf http://www.osti.gov/servlets/purl/1811261 https://www.osti.gov/biblio/1811261 https://doi.org/10.1029/2021gl092696 unknown http://www.osti.gov/servlets/purl/1811261 https://www.osti.gov/biblio/1811261 https://doi.org/10.1029/2021gl092696 doi:10.1029/2021gl092696 58 GEOSCIENCES 2022 ftosti https://doi.org/10.1029/2021gl092696 2023-07-11T10:05:53Z Stratospheric aerosol geoengineering focused on the Arctic could substantially reduce local and worldwide impacts of anthropogenic global warming. Because the Arctic receives little sunlight during the winter, stratospheric aerosols present in the winter at high latitudes have little impact on the climate, whereas stratospheric aerosols present during the summer achieve larger changes in radiative forcing. Injecting SO 2 in the spring leads to peak aerosol optical depth (AOD) in the summer. We demonstrate that spring injection produces approximately twice as much summer AOD as year-round injection and restores approximately twice as much September sea ice, resulting in less increase in stratospheric sulfur burden, stratospheric heating, and stratospheric ozone depletion per unit of sea ice restored. Furthermore, we also find that differences in AOD between different seasonal injection strategies are small compared to the difference between annual and spring injection. Other/Unknown Material Arctic Global warming Sea ice SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Arctic Geophysical Research Letters 48 9 |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
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unknown |
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58 GEOSCIENCES |
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58 GEOSCIENCES Lee, Walker Raymond MacMartin, Douglas G. Visioni, Daniele Kravitz, Ben High-Latitude Stratospheric Aerosol Geoengineering Can Be More Effective if Injection Is Limited to Spring |
topic_facet |
58 GEOSCIENCES |
description |
Stratospheric aerosol geoengineering focused on the Arctic could substantially reduce local and worldwide impacts of anthropogenic global warming. Because the Arctic receives little sunlight during the winter, stratospheric aerosols present in the winter at high latitudes have little impact on the climate, whereas stratospheric aerosols present during the summer achieve larger changes in radiative forcing. Injecting SO 2 in the spring leads to peak aerosol optical depth (AOD) in the summer. We demonstrate that spring injection produces approximately twice as much summer AOD as year-round injection and restores approximately twice as much September sea ice, resulting in less increase in stratospheric sulfur burden, stratospheric heating, and stratospheric ozone depletion per unit of sea ice restored. Furthermore, we also find that differences in AOD between different seasonal injection strategies are small compared to the difference between annual and spring injection. |
author |
Lee, Walker Raymond MacMartin, Douglas G. Visioni, Daniele Kravitz, Ben |
author_facet |
Lee, Walker Raymond MacMartin, Douglas G. Visioni, Daniele Kravitz, Ben |
author_sort |
Lee, Walker Raymond |
title |
High-Latitude Stratospheric Aerosol Geoengineering Can Be More Effective if Injection Is Limited to Spring |
title_short |
High-Latitude Stratospheric Aerosol Geoengineering Can Be More Effective if Injection Is Limited to Spring |
title_full |
High-Latitude Stratospheric Aerosol Geoengineering Can Be More Effective if Injection Is Limited to Spring |
title_fullStr |
High-Latitude Stratospheric Aerosol Geoengineering Can Be More Effective if Injection Is Limited to Spring |
title_full_unstemmed |
High-Latitude Stratospheric Aerosol Geoengineering Can Be More Effective if Injection Is Limited to Spring |
title_sort |
high-latitude stratospheric aerosol geoengineering can be more effective if injection is limited to spring |
publishDate |
2022 |
url |
http://www.osti.gov/servlets/purl/1811261 https://www.osti.gov/biblio/1811261 https://doi.org/10.1029/2021gl092696 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Global warming Sea ice |
genre_facet |
Arctic Global warming Sea ice |
op_relation |
http://www.osti.gov/servlets/purl/1811261 https://www.osti.gov/biblio/1811261 https://doi.org/10.1029/2021gl092696 doi:10.1029/2021gl092696 |
op_doi |
https://doi.org/10.1029/2021gl092696 |
container_title |
Geophysical Research Letters |
container_volume |
48 |
container_issue |
9 |
_version_ |
1772811996085878784 |