Simulated teleconnections during the Eemian, the last intception and the preindustrial period
In this chapter it is shown that the relationship between regional temperatures and large-scale circulation can change through time. The analysis is based on three 1000 year long quasiequilibrium simulations with the coupled atmosphere-ocean general circulation model ECHOG for the Eemian interglacia...
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Sirocko, F.; Claussen, M.; Litt, T.
2007
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fthzgzmk:oai:publications.hereon.de:25157 2023-06-11T04:09:40+02:00 Simulated teleconnections during the Eemian, the last intception and the preindustrial period Widmann, M. Groll, N. Jones, J. 2007 https://publications.hereon.de/id/25157 https://publications.hzg.de/id/25157 unknown Sirocko, F.; Claussen, M.; Litt, T. Elsevier urn:isbn:978-0444529558 https://publications.hereon.de/id/25157 https://publications.hzg.de/id/25157 info:eu-repo/semantics/closedAccess Widmann, M.; Groll, N.; Jones, J.: Simulated teleconnections during the Eemian, the last intception and the preindustrial period. In: Sirocko, F.; Claussen, M.; Litt, T. (Eds.): The climate of past interglacials. Vol. 7 2007. 517 - 526. (ISBN: 978-0444529558) info:eu-repo/classification/ddc/551 info:eu-repo/semantics/bookPart Buch Artikel 2007 fthzgzmk 2023-05-28T23:22:34Z In this chapter it is shown that the relationship between regional temperatures and large-scale circulation can change through time. The analysis is based on three 1000 year long quasiequilibrium simulations with the coupled atmosphere-ocean general circulation model ECHOG for the Eemian interglacial, the last glacial inception and the preindustrial period, which differ with respect to the Earth’s orbit, and as a consequence with respect to the incoming solar radiation. The temperature signals of the Arctic Oscillation (AO) are compared and in some regions noticeable differences are found. For instance during winter there is a clear signal in western Europe in the preindustrial but not in the Eemian simulation, whereas in Siberia a strong signal is only found in the Eemian simulation. The results indicate in which regions an AO signal can be expected to be seen in temperature-sensitive proxy data with annual to multi-decadal temporal resolution. An analysis of the mean and the variability of the atmospheric circulation suggest that the differences in the AO-temperature signal are mainly due to stronger mean westerly winds over Europe and western Siberia in the Eemian compared to the preindustrial period. Based on the same simulations it is also shown that the spatial representativity of annual to decadal regional temperature variability differs between the three periods. For regions with a strong AO temperature signal, the temperature representativity pattern strongly resembles the AO temperature signal, and variations in the two patterns are closely related. Book Part Arctic Siberia Hereon Publications (Helmholtz-Zentrum) Arctic |
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Hereon Publications (Helmholtz-Zentrum) |
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language |
unknown |
topic |
info:eu-repo/classification/ddc/551 |
spellingShingle |
info:eu-repo/classification/ddc/551 Widmann, M. Groll, N. Jones, J. Simulated teleconnections during the Eemian, the last intception and the preindustrial period |
topic_facet |
info:eu-repo/classification/ddc/551 |
description |
In this chapter it is shown that the relationship between regional temperatures and large-scale circulation can change through time. The analysis is based on three 1000 year long quasiequilibrium simulations with the coupled atmosphere-ocean general circulation model ECHOG for the Eemian interglacial, the last glacial inception and the preindustrial period, which differ with respect to the Earth’s orbit, and as a consequence with respect to the incoming solar radiation. The temperature signals of the Arctic Oscillation (AO) are compared and in some regions noticeable differences are found. For instance during winter there is a clear signal in western Europe in the preindustrial but not in the Eemian simulation, whereas in Siberia a strong signal is only found in the Eemian simulation. The results indicate in which regions an AO signal can be expected to be seen in temperature-sensitive proxy data with annual to multi-decadal temporal resolution. An analysis of the mean and the variability of the atmospheric circulation suggest that the differences in the AO-temperature signal are mainly due to stronger mean westerly winds over Europe and western Siberia in the Eemian compared to the preindustrial period. Based on the same simulations it is also shown that the spatial representativity of annual to decadal regional temperature variability differs between the three periods. For regions with a strong AO temperature signal, the temperature representativity pattern strongly resembles the AO temperature signal, and variations in the two patterns are closely related. |
format |
Book Part |
author |
Widmann, M. Groll, N. Jones, J. |
author_facet |
Widmann, M. Groll, N. Jones, J. |
author_sort |
Widmann, M. |
title |
Simulated teleconnections during the Eemian, the last intception and the preindustrial period |
title_short |
Simulated teleconnections during the Eemian, the last intception and the preindustrial period |
title_full |
Simulated teleconnections during the Eemian, the last intception and the preindustrial period |
title_fullStr |
Simulated teleconnections during the Eemian, the last intception and the preindustrial period |
title_full_unstemmed |
Simulated teleconnections during the Eemian, the last intception and the preindustrial period |
title_sort |
simulated teleconnections during the eemian, the last intception and the preindustrial period |
publisher |
Sirocko, F.; Claussen, M.; Litt, T. |
publishDate |
2007 |
url |
https://publications.hereon.de/id/25157 https://publications.hzg.de/id/25157 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Siberia |
genre_facet |
Arctic Siberia |
op_source |
Widmann, M.; Groll, N.; Jones, J.: Simulated teleconnections during the Eemian, the last intception and the preindustrial period. In: Sirocko, F.; Claussen, M.; Litt, T. (Eds.): The climate of past interglacials. Vol. 7 2007. 517 - 526. (ISBN: 978-0444529558) |
op_relation |
urn:isbn:978-0444529558 https://publications.hereon.de/id/25157 https://publications.hzg.de/id/25157 |
op_rights |
info:eu-repo/semantics/closedAccess |
_version_ |
1768383636398145536 |