Past terrestrial hydroclimate sensitivity controlled by Earth system feedbacks
Despite tectonic conditions and atmospheric CO2 levels (pCO2) similar to those of present-day, geological reconstructions from the mid-Pliocene (3.3-3.0 Ma) document high lake levels in the Sahel and mesic conditions in subtropical Eurasia, suggesting drastic reorganizations of subtropical terrestri...
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ftnorce:oai:norceresearch.brage.unit.no:11250/2998606 2024-06-23T07:53:48+00:00 Past terrestrial hydroclimate sensitivity controlled by Earth system feedbacks Feng, Ran Bhattacharya, Tripti Otto-Bliesner, Bette L. Brady, Esther C. Haywood, Alan M. Tindall, Julia C. Hunter, Stephen J. Abe-Ouchi, Ayako Chan, Wing-Le Kageyama, Masa Contoux, Camille Guo, Chuncheng Li, Xiangyu Lohmann, Gerrit Stepanek, Christian Tan, Ning Zhang, Qiong Zhang, Zhongshi Han, Zixuan Williams, Charles J. R. Lunt, Daniel J. Dowsett, Harry J. Chandan, Deepak Peltier, W. Richard 2022 application/pdf https://hdl.handle.net/11250/2998606 https://doi.org/10.1038/s41467-022-28814-7 eng eng Nature Communications. 2022, 13 (1), . urn:issn:2041-1723 https://hdl.handle.net/11250/2998606 https://doi.org/10.1038/s41467-022-28814-7 cristin:2029138 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © The Author(s) 2022 Nature Communications 13 1 11 Peer reviewed Journal article 2022 ftnorce https://doi.org/10.1038/s41467-022-28814-7 2024-05-27T03:02:36Z Despite tectonic conditions and atmospheric CO2 levels (pCO2) similar to those of present-day, geological reconstructions from the mid-Pliocene (3.3-3.0 Ma) document high lake levels in the Sahel and mesic conditions in subtropical Eurasia, suggesting drastic reorganizations of subtropical terrestrial hydroclimate during this interval. Here, using a compilation of proxy data and multi-model paleoclimate simulations, we show that the mid-Pliocene hydroclimate state is not driven by direct CO2 radiative forcing but by a loss of northern high-latitude ice sheets and continental greening. These ice sheet and vegetation changes are long-term Earth system feedbacks to elevated pCO2. Further, the moist conditions in the Sahel and subtropical Eurasia during the mid-Pliocene are a product of enhanced tropospheric humidity and a stationary wave response to the surface warming pattern, which varies strongly with land cover changes. These findings highlight the potential for amplified terrestrial hydroclimate responses over long timescales to a sustained CO2 forcing. publishedVersion Article in Journal/Newspaper Ice Sheet NORCE vitenarkiv (Norwegian Research Centre) Nature Communications 13 1 |
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NORCE vitenarkiv (Norwegian Research Centre) |
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ftnorce |
language |
English |
description |
Despite tectonic conditions and atmospheric CO2 levels (pCO2) similar to those of present-day, geological reconstructions from the mid-Pliocene (3.3-3.0 Ma) document high lake levels in the Sahel and mesic conditions in subtropical Eurasia, suggesting drastic reorganizations of subtropical terrestrial hydroclimate during this interval. Here, using a compilation of proxy data and multi-model paleoclimate simulations, we show that the mid-Pliocene hydroclimate state is not driven by direct CO2 radiative forcing but by a loss of northern high-latitude ice sheets and continental greening. These ice sheet and vegetation changes are long-term Earth system feedbacks to elevated pCO2. Further, the moist conditions in the Sahel and subtropical Eurasia during the mid-Pliocene are a product of enhanced tropospheric humidity and a stationary wave response to the surface warming pattern, which varies strongly with land cover changes. These findings highlight the potential for amplified terrestrial hydroclimate responses over long timescales to a sustained CO2 forcing. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Feng, Ran Bhattacharya, Tripti Otto-Bliesner, Bette L. Brady, Esther C. Haywood, Alan M. Tindall, Julia C. Hunter, Stephen J. Abe-Ouchi, Ayako Chan, Wing-Le Kageyama, Masa Contoux, Camille Guo, Chuncheng Li, Xiangyu Lohmann, Gerrit Stepanek, Christian Tan, Ning Zhang, Qiong Zhang, Zhongshi Han, Zixuan Williams, Charles J. R. Lunt, Daniel J. Dowsett, Harry J. Chandan, Deepak Peltier, W. Richard |
spellingShingle |
Feng, Ran Bhattacharya, Tripti Otto-Bliesner, Bette L. Brady, Esther C. Haywood, Alan M. Tindall, Julia C. Hunter, Stephen J. Abe-Ouchi, Ayako Chan, Wing-Le Kageyama, Masa Contoux, Camille Guo, Chuncheng Li, Xiangyu Lohmann, Gerrit Stepanek, Christian Tan, Ning Zhang, Qiong Zhang, Zhongshi Han, Zixuan Williams, Charles J. R. Lunt, Daniel J. Dowsett, Harry J. Chandan, Deepak Peltier, W. Richard Past terrestrial hydroclimate sensitivity controlled by Earth system feedbacks |
author_facet |
Feng, Ran Bhattacharya, Tripti Otto-Bliesner, Bette L. Brady, Esther C. Haywood, Alan M. Tindall, Julia C. Hunter, Stephen J. Abe-Ouchi, Ayako Chan, Wing-Le Kageyama, Masa Contoux, Camille Guo, Chuncheng Li, Xiangyu Lohmann, Gerrit Stepanek, Christian Tan, Ning Zhang, Qiong Zhang, Zhongshi Han, Zixuan Williams, Charles J. R. Lunt, Daniel J. Dowsett, Harry J. Chandan, Deepak Peltier, W. Richard |
author_sort |
Feng, Ran |
title |
Past terrestrial hydroclimate sensitivity controlled by Earth system feedbacks |
title_short |
Past terrestrial hydroclimate sensitivity controlled by Earth system feedbacks |
title_full |
Past terrestrial hydroclimate sensitivity controlled by Earth system feedbacks |
title_fullStr |
Past terrestrial hydroclimate sensitivity controlled by Earth system feedbacks |
title_full_unstemmed |
Past terrestrial hydroclimate sensitivity controlled by Earth system feedbacks |
title_sort |
past terrestrial hydroclimate sensitivity controlled by earth system feedbacks |
publishDate |
2022 |
url |
https://hdl.handle.net/11250/2998606 https://doi.org/10.1038/s41467-022-28814-7 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Nature Communications 13 1 11 |
op_relation |
Nature Communications. 2022, 13 (1), . urn:issn:2041-1723 https://hdl.handle.net/11250/2998606 https://doi.org/10.1038/s41467-022-28814-7 cristin:2029138 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © The Author(s) 2022 |
op_doi |
https://doi.org/10.1038/s41467-022-28814-7 |
container_title |
Nature Communications |
container_volume |
13 |
container_issue |
1 |
_version_ |
1802645629895180288 |