The effect of a Holocene climatic optimum on the evolution of the Greenland ice sheet during the last 10 kyr
The Holocene climatic optimum was a period 8–5 kyr ago when annual mean surface temperatures in Greenland were 2–3°C warmer than present-day values. However, this warming left little imprint on commonly used temperature proxies often used to derive the climate forcing for simulations of the past evo...
Published in: | Journal of Glaciology |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | https://curis.ku.dk/portal/da/publications/the-effect-of-a-holocene-climatic-optimum-on-the-evolution-of-the-greenland-ice-sheet-during-the-last-10-kyr(ad6c4a0c-d610-4cfd-aa11-9b95ef5d5c1a).html https://doi.org/10.1017/jog.2018.40 https://curis.ku.dk/ws/files/197000895/effect_of_a_holocene_climatic_optimum_on_the_evolution_of_the_greenland_ice_sheet_during_the_last_10_kyr.pdf |
id |
ftcopenhagenunip:oai:pure.atira.dk:publications/ad6c4a0c-d610-4cfd-aa11-9b95ef5d5c1a |
---|---|
record_format |
openpolar |
spelling |
ftcopenhagenunip:oai:pure.atira.dk:publications/ad6c4a0c-d610-4cfd-aa11-9b95ef5d5c1a 2024-05-19T07:41:06+00:00 The effect of a Holocene climatic optimum on the evolution of the Greenland ice sheet during the last 10 kyr Nielsen, Lisbeth Tangaa Adalgeirsdottir, Gudfinna Gkinis, Vasileios Nuterman, Roman Hvidberg, Christine Schøtt 2018-05-22 application/pdf https://curis.ku.dk/portal/da/publications/the-effect-of-a-holocene-climatic-optimum-on-the-evolution-of-the-greenland-ice-sheet-during-the-last-10-kyr(ad6c4a0c-d610-4cfd-aa11-9b95ef5d5c1a).html https://doi.org/10.1017/jog.2018.40 https://curis.ku.dk/ws/files/197000895/effect_of_a_holocene_climatic_optimum_on_the_evolution_of_the_greenland_ice_sheet_during_the_last_10_kyr.pdf eng eng info:eu-repo/semantics/openAccess Nielsen , L T , Adalgeirsdottir , G , Gkinis , V , Nuterman , R & Hvidberg , C S 2018 , ' The effect of a Holocene climatic optimum on the evolution of the Greenland ice sheet during the last 10 kyr ' , Journal of Glaciology , vol. 64 , no. 245 , pp. 477-488 . https://doi.org/10.1017/jog.2018.40 article 2018 ftcopenhagenunip https://doi.org/10.1017/jog.2018.40 2024-04-25T00:45:04Z The Holocene climatic optimum was a period 8–5 kyr ago when annual mean surface temperatures in Greenland were 2–3°C warmer than present-day values. However, this warming left little imprint on commonly used temperature proxies often used to derive the climate forcing for simulations of the past evolution of the Greenland ice sheet. In this study, we investigate the evolution of the Greenland ice sheet through the Holocene when forced by different proxy-derived temperature histories from ice core records, focusing on the effect of sustained higher surface temperatures during the early Holocene. We find that the ice sheet retreats to a minimum volume of ~0.15–1.2 m sea-level equivalent smaller than present in the early or mid-Holocene when forcing an ice-sheet model with temperature reconstructions that contain a climatic optimum, and that the ice sheet has continued to recover from this minimum up to present day. Reconstructions without a warm climatic optimum in the early Holocene result in smaller ice losses continuing throughout the last 10 kyr. For all the simulated ice-sheet histories, the ice sheet is approaching a steady state at the end of the 20th century. Article in Journal/Newspaper Greenland ice core Ice Sheet Journal of Glaciology University of Copenhagen: Research Journal of Glaciology 64 245 477 488 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
description |
The Holocene climatic optimum was a period 8–5 kyr ago when annual mean surface temperatures in Greenland were 2–3°C warmer than present-day values. However, this warming left little imprint on commonly used temperature proxies often used to derive the climate forcing for simulations of the past evolution of the Greenland ice sheet. In this study, we investigate the evolution of the Greenland ice sheet through the Holocene when forced by different proxy-derived temperature histories from ice core records, focusing on the effect of sustained higher surface temperatures during the early Holocene. We find that the ice sheet retreats to a minimum volume of ~0.15–1.2 m sea-level equivalent smaller than present in the early or mid-Holocene when forcing an ice-sheet model with temperature reconstructions that contain a climatic optimum, and that the ice sheet has continued to recover from this minimum up to present day. Reconstructions without a warm climatic optimum in the early Holocene result in smaller ice losses continuing throughout the last 10 kyr. For all the simulated ice-sheet histories, the ice sheet is approaching a steady state at the end of the 20th century. |
format |
Article in Journal/Newspaper |
author |
Nielsen, Lisbeth Tangaa Adalgeirsdottir, Gudfinna Gkinis, Vasileios Nuterman, Roman Hvidberg, Christine Schøtt |
spellingShingle |
Nielsen, Lisbeth Tangaa Adalgeirsdottir, Gudfinna Gkinis, Vasileios Nuterman, Roman Hvidberg, Christine Schøtt The effect of a Holocene climatic optimum on the evolution of the Greenland ice sheet during the last 10 kyr |
author_facet |
Nielsen, Lisbeth Tangaa Adalgeirsdottir, Gudfinna Gkinis, Vasileios Nuterman, Roman Hvidberg, Christine Schøtt |
author_sort |
Nielsen, Lisbeth Tangaa |
title |
The effect of a Holocene climatic optimum on the evolution of the Greenland ice sheet during the last 10 kyr |
title_short |
The effect of a Holocene climatic optimum on the evolution of the Greenland ice sheet during the last 10 kyr |
title_full |
The effect of a Holocene climatic optimum on the evolution of the Greenland ice sheet during the last 10 kyr |
title_fullStr |
The effect of a Holocene climatic optimum on the evolution of the Greenland ice sheet during the last 10 kyr |
title_full_unstemmed |
The effect of a Holocene climatic optimum on the evolution of the Greenland ice sheet during the last 10 kyr |
title_sort |
effect of a holocene climatic optimum on the evolution of the greenland ice sheet during the last 10 kyr |
publishDate |
2018 |
url |
https://curis.ku.dk/portal/da/publications/the-effect-of-a-holocene-climatic-optimum-on-the-evolution-of-the-greenland-ice-sheet-during-the-last-10-kyr(ad6c4a0c-d610-4cfd-aa11-9b95ef5d5c1a).html https://doi.org/10.1017/jog.2018.40 https://curis.ku.dk/ws/files/197000895/effect_of_a_holocene_climatic_optimum_on_the_evolution_of_the_greenland_ice_sheet_during_the_last_10_kyr.pdf |
genre |
Greenland ice core Ice Sheet Journal of Glaciology |
genre_facet |
Greenland ice core Ice Sheet Journal of Glaciology |
op_source |
Nielsen , L T , Adalgeirsdottir , G , Gkinis , V , Nuterman , R & Hvidberg , C S 2018 , ' The effect of a Holocene climatic optimum on the evolution of the Greenland ice sheet during the last 10 kyr ' , Journal of Glaciology , vol. 64 , no. 245 , pp. 477-488 . https://doi.org/10.1017/jog.2018.40 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1017/jog.2018.40 |
container_title |
Journal of Glaciology |
container_volume |
64 |
container_issue |
245 |
container_start_page |
477 |
op_container_end_page |
488 |
_version_ |
1799480697515147264 |