Importance of precipitation seasonality for the interpretation of Eemian ice core isotope records from Greenland
The previous interglacial (Eemian, 130–114 kyr BP) had a mean sea level highstand 4 to 7 m above the current level, and, according to climate proxies, a 2 to 6 K warmer Arctic summer climate. Greenland ice cores extending back into the Eemian show a reduced depletion in δ 18 O of about 3‰ for this p...
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ftdoajarticles:oai:doaj.org/article:c0ad902a1a554596936b934251ecef76 2023-05-15T15:06:33+02:00 Importance of precipitation seasonality for the interpretation of Eemian ice core isotope records from Greenland W. J. van de Berg M. R. van den Broeke E. van Meijgaard F. Kaspar 2013-07-01T00:00:00Z https://doi.org/10.5194/cp-9-1589-2013 https://doaj.org/article/c0ad902a1a554596936b934251ecef76 EN eng Copernicus Publications http://www.clim-past.net/9/1589/2013/cp-9-1589-2013.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-9-1589-2013 1814-9324 1814-9332 https://doaj.org/article/c0ad902a1a554596936b934251ecef76 Climate of the Past, Vol 9, Iss 4, Pp 1589-1600 (2013) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2013 ftdoajarticles https://doi.org/10.5194/cp-9-1589-2013 2022-12-30T21:46:55Z The previous interglacial (Eemian, 130–114 kyr BP) had a mean sea level highstand 4 to 7 m above the current level, and, according to climate proxies, a 2 to 6 K warmer Arctic summer climate. Greenland ice cores extending back into the Eemian show a reduced depletion in δ 18 O of about 3‰ for this period, which suggests a significant warming of several degrees over the Greenland ice sheet. Since the depletion in δ 18 O depends, among other factors, on the condensation temperature of the precipitation, we analyze climatological processes other than mean temperature changes that influence condensation temperature, using output of the regional climate model RACMO2. This model is driven by ERA-40 reanalysis and ECHO-G GCM boundaries for present-day, preindustrial and Eemian climate. The processes that affect the condensation temperature of the precipitation are analyzed using 6-hourly model output. Our results show that changes in precipitation seasonality can cause significant changes of up to 2 K in the condensation temperature that are unrelated to changes in mean temperature. Article in Journal/Newspaper Arctic Greenland Greenland ice cores ice core Ice Sheet Directory of Open Access Journals: DOAJ Articles Arctic Greenland Climate of the Past 9 4 1589 1600 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
spellingShingle |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 W. J. van de Berg M. R. van den Broeke E. van Meijgaard F. Kaspar Importance of precipitation seasonality for the interpretation of Eemian ice core isotope records from Greenland |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
description |
The previous interglacial (Eemian, 130–114 kyr BP) had a mean sea level highstand 4 to 7 m above the current level, and, according to climate proxies, a 2 to 6 K warmer Arctic summer climate. Greenland ice cores extending back into the Eemian show a reduced depletion in δ 18 O of about 3‰ for this period, which suggests a significant warming of several degrees over the Greenland ice sheet. Since the depletion in δ 18 O depends, among other factors, on the condensation temperature of the precipitation, we analyze climatological processes other than mean temperature changes that influence condensation temperature, using output of the regional climate model RACMO2. This model is driven by ERA-40 reanalysis and ECHO-G GCM boundaries for present-day, preindustrial and Eemian climate. The processes that affect the condensation temperature of the precipitation are analyzed using 6-hourly model output. Our results show that changes in precipitation seasonality can cause significant changes of up to 2 K in the condensation temperature that are unrelated to changes in mean temperature. |
format |
Article in Journal/Newspaper |
author |
W. J. van de Berg M. R. van den Broeke E. van Meijgaard F. Kaspar |
author_facet |
W. J. van de Berg M. R. van den Broeke E. van Meijgaard F. Kaspar |
author_sort |
W. J. van de Berg |
title |
Importance of precipitation seasonality for the interpretation of Eemian ice core isotope records from Greenland |
title_short |
Importance of precipitation seasonality for the interpretation of Eemian ice core isotope records from Greenland |
title_full |
Importance of precipitation seasonality for the interpretation of Eemian ice core isotope records from Greenland |
title_fullStr |
Importance of precipitation seasonality for the interpretation of Eemian ice core isotope records from Greenland |
title_full_unstemmed |
Importance of precipitation seasonality for the interpretation of Eemian ice core isotope records from Greenland |
title_sort |
importance of precipitation seasonality for the interpretation of eemian ice core isotope records from greenland |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/cp-9-1589-2013 https://doaj.org/article/c0ad902a1a554596936b934251ecef76 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland Greenland ice cores ice core Ice Sheet |
genre_facet |
Arctic Greenland Greenland ice cores ice core Ice Sheet |
op_source |
Climate of the Past, Vol 9, Iss 4, Pp 1589-1600 (2013) |
op_relation |
http://www.clim-past.net/9/1589/2013/cp-9-1589-2013.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-9-1589-2013 1814-9324 1814-9332 https://doaj.org/article/c0ad902a1a554596936b934251ecef76 |
op_doi |
https://doi.org/10.5194/cp-9-1589-2013 |
container_title |
Climate of the Past |
container_volume |
9 |
container_issue |
4 |
container_start_page |
1589 |
op_container_end_page |
1600 |
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1766338141621321728 |