Global temperature modes shed light on the Holocene temperature conundrum
Reconstructions of the global mean annual temperature evolution during the Holocene yield conflicting results. One temperature reconstruction shows global cooling during the late Holocene. The other reconstruction reveals global warming. Here we show that both a global warming mode and a cooling mod...
Published in: | Nature Communications |
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Online Access: | https://oceanrep.geomar.de/id/eprint/50582/ https://oceanrep.geomar.de/id/eprint/50582/1/s41467-020-18478-6.pdf https://doi.org/10.1038/s41467-020-18478-6 |
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ftoceanrep:oai:oceanrep.geomar.de:50582 2023-05-15T15:03:05+02:00 Global temperature modes shed light on the Holocene temperature conundrum Bader, Jürgen Jungclaus, Johann Krivova, Natalie Lorenz, Stephan Maycock, Amanda Raddatz, Thomas Schmidt, Hauke Toohey, Matthew Wu, Chi-Ju Claussen, Martin 2020-09-18 text https://oceanrep.geomar.de/id/eprint/50582/ https://oceanrep.geomar.de/id/eprint/50582/1/s41467-020-18478-6.pdf https://doi.org/10.1038/s41467-020-18478-6 en eng Nature Research https://oceanrep.geomar.de/id/eprint/50582/1/s41467-020-18478-6.pdf Bader, J. , Jungclaus, J., Krivova, N. , Lorenz, S., Maycock, A. , Raddatz, T., Schmidt, H. , Toohey, M. , Wu, C. J. and Claussen, M. (2020) Global temperature modes shed light on the Holocene temperature conundrum. Open Access Nature Communications, 11 (1). Art.Nr. 4726. DOI 10.1038/s41467-020-18478-6 <https://doi.org/10.1038/s41467-020-18478-6>. doi:10.1038/s41467-020-18478-6 cc_by_4.0 info:eu-repo/semantics/openAccess Article PeerReviewed 2020 ftoceanrep https://doi.org/10.1038/s41467-020-18478-6 2023-04-07T15:51:56Z Reconstructions of the global mean annual temperature evolution during the Holocene yield conflicting results. One temperature reconstruction shows global cooling during the late Holocene. The other reconstruction reveals global warming. Here we show that both a global warming mode and a cooling mode emerge when performing a spatio-temporal analysis of annual temperature variability during the Holocene using data from a transient climate model simulation. The warming mode is most pronounced in the tropics. The simulated cooling mode is determined by changes in the seasonal cycle of Arctic sea-ice that are forced by orbital variations and volcanic eruptions. The warming mode dominates in the mid-Holocene, whereas the cooling mode takes over in the late Holocene. The weighted sum of the two modes yields the simulated global temperature trend evolution. Our findings have strong implications for the interpretation of proxy data and the selection of proxy locations to compute global mean temperatures. Article in Journal/Newspaper Arctic Global warming Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Nature Communications 11 1 |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Reconstructions of the global mean annual temperature evolution during the Holocene yield conflicting results. One temperature reconstruction shows global cooling during the late Holocene. The other reconstruction reveals global warming. Here we show that both a global warming mode and a cooling mode emerge when performing a spatio-temporal analysis of annual temperature variability during the Holocene using data from a transient climate model simulation. The warming mode is most pronounced in the tropics. The simulated cooling mode is determined by changes in the seasonal cycle of Arctic sea-ice that are forced by orbital variations and volcanic eruptions. The warming mode dominates in the mid-Holocene, whereas the cooling mode takes over in the late Holocene. The weighted sum of the two modes yields the simulated global temperature trend evolution. Our findings have strong implications for the interpretation of proxy data and the selection of proxy locations to compute global mean temperatures. |
format |
Article in Journal/Newspaper |
author |
Bader, Jürgen Jungclaus, Johann Krivova, Natalie Lorenz, Stephan Maycock, Amanda Raddatz, Thomas Schmidt, Hauke Toohey, Matthew Wu, Chi-Ju Claussen, Martin |
spellingShingle |
Bader, Jürgen Jungclaus, Johann Krivova, Natalie Lorenz, Stephan Maycock, Amanda Raddatz, Thomas Schmidt, Hauke Toohey, Matthew Wu, Chi-Ju Claussen, Martin Global temperature modes shed light on the Holocene temperature conundrum |
author_facet |
Bader, Jürgen Jungclaus, Johann Krivova, Natalie Lorenz, Stephan Maycock, Amanda Raddatz, Thomas Schmidt, Hauke Toohey, Matthew Wu, Chi-Ju Claussen, Martin |
author_sort |
Bader, Jürgen |
title |
Global temperature modes shed light on the Holocene temperature conundrum |
title_short |
Global temperature modes shed light on the Holocene temperature conundrum |
title_full |
Global temperature modes shed light on the Holocene temperature conundrum |
title_fullStr |
Global temperature modes shed light on the Holocene temperature conundrum |
title_full_unstemmed |
Global temperature modes shed light on the Holocene temperature conundrum |
title_sort |
global temperature modes shed light on the holocene temperature conundrum |
publisher |
Nature Research |
publishDate |
2020 |
url |
https://oceanrep.geomar.de/id/eprint/50582/ https://oceanrep.geomar.de/id/eprint/50582/1/s41467-020-18478-6.pdf https://doi.org/10.1038/s41467-020-18478-6 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Global warming Sea ice |
genre_facet |
Arctic Global warming Sea ice |
op_relation |
https://oceanrep.geomar.de/id/eprint/50582/1/s41467-020-18478-6.pdf Bader, J. , Jungclaus, J., Krivova, N. , Lorenz, S., Maycock, A. , Raddatz, T., Schmidt, H. , Toohey, M. , Wu, C. J. and Claussen, M. (2020) Global temperature modes shed light on the Holocene temperature conundrum. Open Access Nature Communications, 11 (1). Art.Nr. 4726. DOI 10.1038/s41467-020-18478-6 <https://doi.org/10.1038/s41467-020-18478-6>. doi:10.1038/s41467-020-18478-6 |
op_rights |
cc_by_4.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41467-020-18478-6 |
container_title |
Nature Communications |
container_volume |
11 |
container_issue |
1 |
_version_ |
1766334995287244800 |