Millennial scale feedbacks determine the shape and rapidity of glacial termination
The Miocene epoch (23.03–5.33 Ma) was a time interval of global warmth, relative to today. Continental configurations and mountain topography transitioned toward modern conditions, and many flora and fauna evolved into the same taxa that exist today. Miocene climate was dynamic: long periods of earl...
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ftawi:oai:epic.awi.de:55683 2024-09-15T18:12:30+00:00 Millennial scale feedbacks determine the shape and rapidity of glacial termination Barker, Stephen Knorr, Gregor 2021 https://epic.awi.de/id/eprint/55683/ https://doi.org/10.1038/s41467-021-22388-6 https://hdl.handle.net/10013/epic.c8614fe3-55f2-472b-bd8e-faa769e45fba unknown Barker, S. and Knorr, G. (2021) Millennial scale feedbacks determine the shape and rapidity of glacial termination , Nature Communications, 12 (1) . doi:10.1038/s41467-021-22388-6 <https://doi.org/10.1038/s41467-021-22388-6> , hdl:10013/epic.c8614fe3-55f2-472b-bd8e-faa769e45fba EPIC3Nature Communications, 12(1), ISSN: 2041-1723 Article isiRev 2021 ftawi https://doi.org/10.1038/s41467-021-22388-6 2024-06-24T04:28:46Z The Miocene epoch (23.03–5.33 Ma) was a time interval of global warmth, relative to today. Continental configurations and mountain topography transitioned toward modern conditions, and many flora and fauna evolved into the same taxa that exist today. Miocene climate was dynamic: long periods of early and late glaciation bracketed a ∼2 Myr greenhouse interval—the Miocene Climatic Optimum (MCO). Floras, faunas, ice sheets, precipitation, pCO2, and ocean and atmospheric circulation mostly (but not ubiquitously) covaried with these large changes in climate. With higher temperatures and moderately higher pCO2 (∼400–600 ppm), the MCO has been suggested as a particularly appropriate analog for future climate scenarios, and for assessing the predictive accuracy of numerical climate models—the same models that are used to simulate future climate. Yet, Miocene conditions have proved difficult to reconcile with models. This implies either missing positive feedbacks in the models, a lack of knowledge of past climate forcings, or the need for re-interpretation of proxies, which might mitigate the model-data discrepancy. Our understanding of Miocene climatic, biogeochemical, and oceanic changes on broad spatial and temporal scales is still developing. New records documenting the physical, chemical, and biotic aspects of the Earth system are emerging, and together provide a more comprehensive understanding of this important time interval. Here, we review the state-of-the-art in Miocene climate, ocean circulation, biogeochemical cycling, ice sheet dynamics, and biotic adaptation research as inferred through proxy observations and modeling studies. Article in Journal/Newspaper Ice Sheet Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Nature Communications 12 1 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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The Miocene epoch (23.03–5.33 Ma) was a time interval of global warmth, relative to today. Continental configurations and mountain topography transitioned toward modern conditions, and many flora and fauna evolved into the same taxa that exist today. Miocene climate was dynamic: long periods of early and late glaciation bracketed a ∼2 Myr greenhouse interval—the Miocene Climatic Optimum (MCO). Floras, faunas, ice sheets, precipitation, pCO2, and ocean and atmospheric circulation mostly (but not ubiquitously) covaried with these large changes in climate. With higher temperatures and moderately higher pCO2 (∼400–600 ppm), the MCO has been suggested as a particularly appropriate analog for future climate scenarios, and for assessing the predictive accuracy of numerical climate models—the same models that are used to simulate future climate. Yet, Miocene conditions have proved difficult to reconcile with models. This implies either missing positive feedbacks in the models, a lack of knowledge of past climate forcings, or the need for re-interpretation of proxies, which might mitigate the model-data discrepancy. Our understanding of Miocene climatic, biogeochemical, and oceanic changes on broad spatial and temporal scales is still developing. New records documenting the physical, chemical, and biotic aspects of the Earth system are emerging, and together provide a more comprehensive understanding of this important time interval. Here, we review the state-of-the-art in Miocene climate, ocean circulation, biogeochemical cycling, ice sheet dynamics, and biotic adaptation research as inferred through proxy observations and modeling studies. |
format |
Article in Journal/Newspaper |
author |
Barker, Stephen Knorr, Gregor |
spellingShingle |
Barker, Stephen Knorr, Gregor Millennial scale feedbacks determine the shape and rapidity of glacial termination |
author_facet |
Barker, Stephen Knorr, Gregor |
author_sort |
Barker, Stephen |
title |
Millennial scale feedbacks determine the shape and rapidity of glacial termination |
title_short |
Millennial scale feedbacks determine the shape and rapidity of glacial termination |
title_full |
Millennial scale feedbacks determine the shape and rapidity of glacial termination |
title_fullStr |
Millennial scale feedbacks determine the shape and rapidity of glacial termination |
title_full_unstemmed |
Millennial scale feedbacks determine the shape and rapidity of glacial termination |
title_sort |
millennial scale feedbacks determine the shape and rapidity of glacial termination |
publishDate |
2021 |
url |
https://epic.awi.de/id/eprint/55683/ https://doi.org/10.1038/s41467-021-22388-6 https://hdl.handle.net/10013/epic.c8614fe3-55f2-472b-bd8e-faa769e45fba |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
EPIC3Nature Communications, 12(1), ISSN: 2041-1723 |
op_relation |
Barker, S. and Knorr, G. (2021) Millennial scale feedbacks determine the shape and rapidity of glacial termination , Nature Communications, 12 (1) . doi:10.1038/s41467-021-22388-6 <https://doi.org/10.1038/s41467-021-22388-6> , hdl:10013/epic.c8614fe3-55f2-472b-bd8e-faa769e45fba |
op_doi |
https://doi.org/10.1038/s41467-021-22388-6 |
container_title |
Nature Communications |
container_volume |
12 |
container_issue |
1 |
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1810450085165662208 |