Global and Arctic climate engineering: numerical model studies
We perform numerical simulations of the atmosphere, sea ice and upper ocean to examine possible effects of diminishing incoming solar radiation, insolation, on the climate system. We simulate both global and Arctic climate engineering in idealized scenarios in which insolation is diminished above th...
Published in: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
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Online Access: | http://dx.doi.org/10.1098/rsta.2008.0132 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2008.0132 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2008.0132 |
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crroyalsociety:10.1098/rsta.2008.0132 2024-09-15T17:35:46+00:00 Global and Arctic climate engineering: numerical model studies Caldeira, Ken Wood, Lowell 2008 http://dx.doi.org/10.1098/rsta.2008.0132 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2008.0132 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2008.0132 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences volume 366, issue 1882, page 4039-4056 ISSN 1364-503X 1471-2962 journal-article 2008 crroyalsociety https://doi.org/10.1098/rsta.2008.0132 2024-07-15T04:26:46Z We perform numerical simulations of the atmosphere, sea ice and upper ocean to examine possible effects of diminishing incoming solar radiation, insolation, on the climate system. We simulate both global and Arctic climate engineering in idealized scenarios in which insolation is diminished above the top of the atmosphere. We consider the Arctic scenarios because climate change is manifesting most strongly there. Our results indicate that, while such simple insolation modulation is unlikely to perfectly reverse the effects of greenhouse gas warming, over a broad range of measures considering both temperature and water, an engineered high CO 2 climate can be made much more similar to the low CO 2 climate than would be a high CO 2 climate in the absence of such engineering. At high latitudes, there is less sunlight deflected per unit albedo change but climate system feedbacks operate more powerfully there. These two effects largely cancel each other, making the global mean temperature response per unit top-of-atmosphere albedo change relatively insensitive to latitude. Implementing insolation modulation appears to be feasible. Article in Journal/Newspaper albedo Climate change Sea ice The Royal Society Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 366 1882 4039 4056 |
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Open Polar |
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The Royal Society |
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crroyalsociety |
language |
English |
description |
We perform numerical simulations of the atmosphere, sea ice and upper ocean to examine possible effects of diminishing incoming solar radiation, insolation, on the climate system. We simulate both global and Arctic climate engineering in idealized scenarios in which insolation is diminished above the top of the atmosphere. We consider the Arctic scenarios because climate change is manifesting most strongly there. Our results indicate that, while such simple insolation modulation is unlikely to perfectly reverse the effects of greenhouse gas warming, over a broad range of measures considering both temperature and water, an engineered high CO 2 climate can be made much more similar to the low CO 2 climate than would be a high CO 2 climate in the absence of such engineering. At high latitudes, there is less sunlight deflected per unit albedo change but climate system feedbacks operate more powerfully there. These two effects largely cancel each other, making the global mean temperature response per unit top-of-atmosphere albedo change relatively insensitive to latitude. Implementing insolation modulation appears to be feasible. |
format |
Article in Journal/Newspaper |
author |
Caldeira, Ken Wood, Lowell |
spellingShingle |
Caldeira, Ken Wood, Lowell Global and Arctic climate engineering: numerical model studies |
author_facet |
Caldeira, Ken Wood, Lowell |
author_sort |
Caldeira, Ken |
title |
Global and Arctic climate engineering: numerical model studies |
title_short |
Global and Arctic climate engineering: numerical model studies |
title_full |
Global and Arctic climate engineering: numerical model studies |
title_fullStr |
Global and Arctic climate engineering: numerical model studies |
title_full_unstemmed |
Global and Arctic climate engineering: numerical model studies |
title_sort |
global and arctic climate engineering: numerical model studies |
publisher |
The Royal Society |
publishDate |
2008 |
url |
http://dx.doi.org/10.1098/rsta.2008.0132 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2008.0132 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2008.0132 |
genre |
albedo Climate change Sea ice |
genre_facet |
albedo Climate change Sea ice |
op_source |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences volume 366, issue 1882, page 4039-4056 ISSN 1364-503X 1471-2962 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rsta.2008.0132 |
container_title |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
container_volume |
366 |
container_issue |
1882 |
container_start_page |
4039 |
op_container_end_page |
4056 |
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1810478525420929024 |