Vegetation-climate feedbacks in a greenhouse world
The potential for feedbacks between terrestrial vegetation, climate, and the atmospheric CO 2 partial pressure have been addressed by modelling. Previous research has established that under global warming and CO 2 enrichment, the stomatal conductance of vegetation tends to decrease, causing a warmin...
Published in: | Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences |
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Online Access: | http://dx.doi.org/10.1098/rstb.1998.0188 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.1998.0188 |
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crroyalsociety:10.1098/rstb.1998.0188 2024-06-23T07:56:43+00:00 Vegetation-climate feedbacks in a greenhouse world Woodward, F. I. Lomas, M. R. Betts, R. A. Beerling, D. J. Chaloner, W. G. Woodward, F. I. 1998 http://dx.doi.org/10.1098/rstb.1998.0188 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.1998.0188 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences volume 353, issue 1365, page 29-39 ISSN 0962-8436 1471-2970 journal-article 1998 crroyalsociety https://doi.org/10.1098/rstb.1998.0188 2024-06-10T04:15:08Z The potential for feedbacks between terrestrial vegetation, climate, and the atmospheric CO 2 partial pressure have been addressed by modelling. Previous research has established that under global warming and CO 2 enrichment, the stomatal conductance of vegetation tends to decrease, causing a warming effect on top of the driving change in greenhouse warming. At the global scale, this positive feedback is ultimately changed to a negative feedback through changes in vegetation structure. In spatial terms this structural feedback has a variable geographical pattern in terms of magnitude and sign. At high latitudes, increases in vegetation leaf area index (LAI) and vegetation height cause a positive feedback, and warming through reductions in the winter snow–cover albedo. At lower latitudes when vegetation becomes more sparse with warming, the higher albedo of the underlying soil leads to cooling. However, the largest area effects are of negative feedbacks caused by increased evaporative cooling with increasing LAI. These effects do not include feedbacks on the atmospheric CO 2 concentration, through changes in the carbon cycle of the vegetation. Modelling experiments, with biogeochemical, physiological and structural feedbacks on atmospheric CO 2 , but with no changes in precipitation, ocean activity or sea ice formation, have shown that a consequence of the CO 2 fertilization effect on vegetation will be a reduction of atmospheric CO 2 concentration, in the order of 12% by the year 2100 and a reduced global warming by 0.7°C, in a total greenhouse warming of 3.9°C. Article in Journal/Newspaper Sea ice The Royal Society Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences 353 1365 29 39 |
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crroyalsociety |
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English |
description |
The potential for feedbacks between terrestrial vegetation, climate, and the atmospheric CO 2 partial pressure have been addressed by modelling. Previous research has established that under global warming and CO 2 enrichment, the stomatal conductance of vegetation tends to decrease, causing a warming effect on top of the driving change in greenhouse warming. At the global scale, this positive feedback is ultimately changed to a negative feedback through changes in vegetation structure. In spatial terms this structural feedback has a variable geographical pattern in terms of magnitude and sign. At high latitudes, increases in vegetation leaf area index (LAI) and vegetation height cause a positive feedback, and warming through reductions in the winter snow–cover albedo. At lower latitudes when vegetation becomes more sparse with warming, the higher albedo of the underlying soil leads to cooling. However, the largest area effects are of negative feedbacks caused by increased evaporative cooling with increasing LAI. These effects do not include feedbacks on the atmospheric CO 2 concentration, through changes in the carbon cycle of the vegetation. Modelling experiments, with biogeochemical, physiological and structural feedbacks on atmospheric CO 2 , but with no changes in precipitation, ocean activity or sea ice formation, have shown that a consequence of the CO 2 fertilization effect on vegetation will be a reduction of atmospheric CO 2 concentration, in the order of 12% by the year 2100 and a reduced global warming by 0.7°C, in a total greenhouse warming of 3.9°C. |
author2 |
Beerling, D. J. Chaloner, W. G. Woodward, F. I. |
format |
Article in Journal/Newspaper |
author |
Woodward, F. I. Lomas, M. R. Betts, R. A. |
spellingShingle |
Woodward, F. I. Lomas, M. R. Betts, R. A. Vegetation-climate feedbacks in a greenhouse world |
author_facet |
Woodward, F. I. Lomas, M. R. Betts, R. A. |
author_sort |
Woodward, F. I. |
title |
Vegetation-climate feedbacks in a greenhouse world |
title_short |
Vegetation-climate feedbacks in a greenhouse world |
title_full |
Vegetation-climate feedbacks in a greenhouse world |
title_fullStr |
Vegetation-climate feedbacks in a greenhouse world |
title_full_unstemmed |
Vegetation-climate feedbacks in a greenhouse world |
title_sort |
vegetation-climate feedbacks in a greenhouse world |
publisher |
The Royal Society |
publishDate |
1998 |
url |
http://dx.doi.org/10.1098/rstb.1998.0188 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.1998.0188 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences volume 353, issue 1365, page 29-39 ISSN 0962-8436 1471-2970 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rstb.1998.0188 |
container_title |
Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences |
container_volume |
353 |
container_issue |
1365 |
container_start_page |
29 |
op_container_end_page |
39 |
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1802650016590856192 |