Paradoxical cold conditions during the medieval climate anomaly in the Western Arctic
In the Northern Hemisphere, most mountain glaciers experienced their largest extent in the last millennium during the Little Ice Age (1450 to 1850 CE, LIA), a period marked by colder hemispheric temperatures than the Medieval Climate Anomaly (950 to 1250 CE, MCA), a period which coincided with glaci...
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ftird:oai:ird.fr:fdi:010067795 2023-05-15T14:26:21+02:00 Paradoxical cold conditions during the medieval climate anomaly in the Western Arctic Jomelli, V. Lane, T. Favier, V. Masson-Delmotte, V. Swingedouw, D. Rinterknecht, V. Schimmelpfennig, I. Brunstein, D. Verfaillie, D. Adamson, K. Leanni, Laetitia Mokadem, F. Aster Team ARCTIQUE 2016 text/pdf http://www.documentation.ird.fr/hor/fdi:010067795 EN eng http://www.documentation.ird.fr/hor/fdi:010067795 oai:ird.fr:fdi:010067795 Jomelli V., Lane T., Favier V., Masson-Delmotte V., Swingedouw D., Rinterknecht V., Schimmelpfennig I., Brunstein D., Verfaillie D., Adamson K., Leanni Laetitia, Mokadem F., Aster Team. Paradoxical cold conditions during the medieval climate anomaly in the Western Arctic. Scientific Reports - Nature, 2016, 6, p. art. 32984 [9 p.]. text 2016 ftird 2021-01-12T23:51:57Z In the Northern Hemisphere, most mountain glaciers experienced their largest extent in the last millennium during the Little Ice Age (1450 to 1850 CE, LIA), a period marked by colder hemispheric temperatures than the Medieval Climate Anomaly (950 to 1250 CE, MCA), a period which coincided with glacier retreat. Here, we present a new moraine chronology based on 36Cl surface exposure dating from Lyngmarksbraeen glacier, West Greenland. Consistent with other glaciers in the western Arctic, Lyngmarksbraeen glacier experienced several advances during the last millennium, the first one at the end of the MCA, in similar to 1200 CE, was of similar amplitude to two other advances during the LIA. In the absence of any significant changes in accumulation records from South Greenland ice cores, we attribute this expansion to multi-decadal summer cooling likely driven by volcanic and/or solar forcing, and associated regional sea-ice feedbacks. Such regional multi-decadal cold conditions at the end of the MCA are neither resolved in temperature reconstructions from other parts of the Northern Hemisphere, nor captured in last millennium climate simulations. Text Arctic Arctic Arctique* glacier Greenland Greenland ice cores Sea ice IRD (Institute de recherche pour le développement): Horizon Arctic Greenland |
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Open Polar |
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IRD (Institute de recherche pour le développement): Horizon |
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English |
description |
In the Northern Hemisphere, most mountain glaciers experienced their largest extent in the last millennium during the Little Ice Age (1450 to 1850 CE, LIA), a period marked by colder hemispheric temperatures than the Medieval Climate Anomaly (950 to 1250 CE, MCA), a period which coincided with glacier retreat. Here, we present a new moraine chronology based on 36Cl surface exposure dating from Lyngmarksbraeen glacier, West Greenland. Consistent with other glaciers in the western Arctic, Lyngmarksbraeen glacier experienced several advances during the last millennium, the first one at the end of the MCA, in similar to 1200 CE, was of similar amplitude to two other advances during the LIA. In the absence of any significant changes in accumulation records from South Greenland ice cores, we attribute this expansion to multi-decadal summer cooling likely driven by volcanic and/or solar forcing, and associated regional sea-ice feedbacks. Such regional multi-decadal cold conditions at the end of the MCA are neither resolved in temperature reconstructions from other parts of the Northern Hemisphere, nor captured in last millennium climate simulations. |
format |
Text |
author |
Jomelli, V. Lane, T. Favier, V. Masson-Delmotte, V. Swingedouw, D. Rinterknecht, V. Schimmelpfennig, I. Brunstein, D. Verfaillie, D. Adamson, K. Leanni, Laetitia Mokadem, F. Aster Team |
spellingShingle |
Jomelli, V. Lane, T. Favier, V. Masson-Delmotte, V. Swingedouw, D. Rinterknecht, V. Schimmelpfennig, I. Brunstein, D. Verfaillie, D. Adamson, K. Leanni, Laetitia Mokadem, F. Aster Team Paradoxical cold conditions during the medieval climate anomaly in the Western Arctic |
author_facet |
Jomelli, V. Lane, T. Favier, V. Masson-Delmotte, V. Swingedouw, D. Rinterknecht, V. Schimmelpfennig, I. Brunstein, D. Verfaillie, D. Adamson, K. Leanni, Laetitia Mokadem, F. Aster Team |
author_sort |
Jomelli, V. |
title |
Paradoxical cold conditions during the medieval climate anomaly in the Western Arctic |
title_short |
Paradoxical cold conditions during the medieval climate anomaly in the Western Arctic |
title_full |
Paradoxical cold conditions during the medieval climate anomaly in the Western Arctic |
title_fullStr |
Paradoxical cold conditions during the medieval climate anomaly in the Western Arctic |
title_full_unstemmed |
Paradoxical cold conditions during the medieval climate anomaly in the Western Arctic |
title_sort |
paradoxical cold conditions during the medieval climate anomaly in the western arctic |
publishDate |
2016 |
url |
http://www.documentation.ird.fr/hor/fdi:010067795 |
op_coverage |
ARCTIQUE |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Arctic Arctique* glacier Greenland Greenland ice cores Sea ice |
genre_facet |
Arctic Arctic Arctique* glacier Greenland Greenland ice cores Sea ice |
op_relation |
http://www.documentation.ird.fr/hor/fdi:010067795 oai:ird.fr:fdi:010067795 Jomelli V., Lane T., Favier V., Masson-Delmotte V., Swingedouw D., Rinterknecht V., Schimmelpfennig I., Brunstein D., Verfaillie D., Adamson K., Leanni Laetitia, Mokadem F., Aster Team. Paradoxical cold conditions during the medieval climate anomaly in the Western Arctic. Scientific Reports - Nature, 2016, 6, p. art. 32984 [9 p.]. |
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1766298874836680704 |