Temperature reconstruction from 10 to 120 kyr b2k from the NGRIP ice core
International audience In order to reconstruct the temperature of the North Greenland Ice Core Project (NGRIP) site, new measurements of δ 15 N have been performed covering the time period from the beginning of the Holocene to Dansgaard-Oeschger (DO) event 8. Together with previously measured and mo...
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ftinsu:oai:HAL:hal-04114638v1 2023-06-18T03:40:57+02:00 Temperature reconstruction from 10 to 120 kyr b2k from the NGRIP ice core Kindler, P. Guillevic, M. Baumgartner, M. Schwander, J. Landais, A. Leuenberger, M. Spahni, R. Capron, E. Chappellaz, J. Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) 2014 https://hal.science/hal-04114638 https://doi.org/10.5194/cp-10-887-201410.5194/cpd-9-4099-2013 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-10-887-201410.5194/cpd-9-4099-2013 hal-04114638 https://hal.science/hal-04114638 BIBCODE: 2014CliPa.10.887K doi:10.5194/cp-10-887-201410.5194/cpd-9-4099-2013 Climate of the Past https://hal.science/hal-04114638 Climate of the Past, 2014, 10, pp.887-902. ⟨10.5194/cp-10-887-201410.5194/cpd-9-4099-2013⟩ Earth Science [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2014 ftinsu https://doi.org/10.5194/cp-10-887-201410.5194/cpd-9-4099-2013 2023-06-05T19:25:57Z International audience In order to reconstruct the temperature of the North Greenland Ice Core Project (NGRIP) site, new measurements of δ 15 N have been performed covering the time period from the beginning of the Holocene to Dansgaard-Oeschger (DO) event 8. Together with previously measured and mostly published δ 15 N data, we present for the first time a NGRIP temperature reconstruction for the whole last glacial period from 10 to 120 kyr b2k (thousand years before 2000 AD) including every DO event based on δ 15 N isotope measurements combined with a firn densification and heat diffusion model. The detected temperature rises at the onset of DO events range from 5 °C (DO 25) up to 16.5 °C (DO 11) with an uncertainty of ±3 °C. To bring measured and modelled data into agreement, we had to reduce the accumulation rate given by the NGRIP ss09sea06bm timescale in some periods by 30 to 35%, especially during the last glacial maximum. A comparison between reconstructed temperature and δ 18 O ice data confirms that the isotopic composition of the stadial was strongly influenced by seasonality. We evidence an anticorrelation between the variations of the δ 18 O ice sensitivity to temperature (referred to as α) and obliquity in agreement with a simple Rayleigh distillation model. Finally, we suggest that α might be influenced by the Northern Hemisphere ice sheet volume. Article in Journal/Newspaper Greenland Greenland ice core Greenland Ice core Project ice core Ice Sheet NGRIP North Greenland North Greenland Ice Core Project Institut national des sciences de l'Univers: HAL-INSU Greenland |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
Earth Science [SDU]Sciences of the Universe [physics] |
spellingShingle |
Earth Science [SDU]Sciences of the Universe [physics] Kindler, P. Guillevic, M. Baumgartner, M. Schwander, J. Landais, A. Leuenberger, M. Spahni, R. Capron, E. Chappellaz, J. Temperature reconstruction from 10 to 120 kyr b2k from the NGRIP ice core |
topic_facet |
Earth Science [SDU]Sciences of the Universe [physics] |
description |
International audience In order to reconstruct the temperature of the North Greenland Ice Core Project (NGRIP) site, new measurements of δ 15 N have been performed covering the time period from the beginning of the Holocene to Dansgaard-Oeschger (DO) event 8. Together with previously measured and mostly published δ 15 N data, we present for the first time a NGRIP temperature reconstruction for the whole last glacial period from 10 to 120 kyr b2k (thousand years before 2000 AD) including every DO event based on δ 15 N isotope measurements combined with a firn densification and heat diffusion model. The detected temperature rises at the onset of DO events range from 5 °C (DO 25) up to 16.5 °C (DO 11) with an uncertainty of ±3 °C. To bring measured and modelled data into agreement, we had to reduce the accumulation rate given by the NGRIP ss09sea06bm timescale in some periods by 30 to 35%, especially during the last glacial maximum. A comparison between reconstructed temperature and δ 18 O ice data confirms that the isotopic composition of the stadial was strongly influenced by seasonality. We evidence an anticorrelation between the variations of the δ 18 O ice sensitivity to temperature (referred to as α) and obliquity in agreement with a simple Rayleigh distillation model. Finally, we suggest that α might be influenced by the Northern Hemisphere ice sheet volume. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Kindler, P. Guillevic, M. Baumgartner, M. Schwander, J. Landais, A. Leuenberger, M. Spahni, R. Capron, E. Chappellaz, J. |
author_facet |
Kindler, P. Guillevic, M. Baumgartner, M. Schwander, J. Landais, A. Leuenberger, M. Spahni, R. Capron, E. Chappellaz, J. |
author_sort |
Kindler, P. |
title |
Temperature reconstruction from 10 to 120 kyr b2k from the NGRIP ice core |
title_short |
Temperature reconstruction from 10 to 120 kyr b2k from the NGRIP ice core |
title_full |
Temperature reconstruction from 10 to 120 kyr b2k from the NGRIP ice core |
title_fullStr |
Temperature reconstruction from 10 to 120 kyr b2k from the NGRIP ice core |
title_full_unstemmed |
Temperature reconstruction from 10 to 120 kyr b2k from the NGRIP ice core |
title_sort |
temperature reconstruction from 10 to 120 kyr b2k from the ngrip ice core |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.science/hal-04114638 https://doi.org/10.5194/cp-10-887-201410.5194/cpd-9-4099-2013 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice core Greenland Ice core Project ice core Ice Sheet NGRIP North Greenland North Greenland Ice Core Project |
genre_facet |
Greenland Greenland ice core Greenland Ice core Project ice core Ice Sheet NGRIP North Greenland North Greenland Ice Core Project |
op_source |
Climate of the Past https://hal.science/hal-04114638 Climate of the Past, 2014, 10, pp.887-902. ⟨10.5194/cp-10-887-201410.5194/cpd-9-4099-2013⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-10-887-201410.5194/cpd-9-4099-2013 hal-04114638 https://hal.science/hal-04114638 BIBCODE: 2014CliPa.10.887K doi:10.5194/cp-10-887-201410.5194/cpd-9-4099-2013 |
op_doi |
https://doi.org/10.5194/cp-10-887-201410.5194/cpd-9-4099-2013 |
_version_ |
1769006315155226624 |