Climate change between the mid and late Holocene in northern high latitudes – Part 2: Model-data comparisons

The climate response over northern high latitudes to the mid-Holocene orbital forcing has been investigated in three types of PMIP (Paleoclimate Modelling Intercomparison Project) simulations with different complexity of the modelled climate system. By first undertaking model-data comparison, an obj...

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Published in:Climate of the Past
Main Authors: K. Holmgren, J. Nilsson, H. Körnich, A. Moberg, H. S. Sundqvist, Q. Zhang
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2010
Subjects:
Online Access:https://doi.org/10.5194/cp-6-609-2010
https://doaj.org/article/b9cf1fd9fd284c8cb24d7fbfc8a1f034
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spelling ftdoajarticles:oai:doaj.org/article:b9cf1fd9fd284c8cb24d7fbfc8a1f034 2023-05-15T13:11:59+02:00 Climate change between the mid and late Holocene in northern high latitudes – Part 2: Model-data comparisons K. Holmgren J. Nilsson H. Körnich A. Moberg H. S. Sundqvist Q. Zhang 2010-09-01T00:00:00Z https://doi.org/10.5194/cp-6-609-2010 https://doaj.org/article/b9cf1fd9fd284c8cb24d7fbfc8a1f034 EN eng Copernicus Publications http://www.clim-past.net/6/609/2010/cp-6-609-2010.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-6-609-2010 1814-9324 1814-9332 https://doaj.org/article/b9cf1fd9fd284c8cb24d7fbfc8a1f034 Climate of the Past, Vol 6, Iss 5, Pp 609-626 (2010) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2010 ftdoajarticles https://doi.org/10.5194/cp-6-609-2010 2022-12-31T07:23:27Z The climate response over northern high latitudes to the mid-Holocene orbital forcing has been investigated in three types of PMIP (Paleoclimate Modelling Intercomparison Project) simulations with different complexity of the modelled climate system. By first undertaking model-data comparison, an objective selection method has been applied to evaluate the capability of the climate models to reproduce the spatial response pattern seen in proxy data. The possible feedback mechanisms behind the climate response have been explored based on the selected model simulations. Subsequent model-model comparisons indicate the importance of including the different physical feedbacks in the climate models. The comparisons between the proxy-based reconstructions and the best fit selected simulations show that over the northern high latitudes, summer temperature change follows closely the insolation change and shows a common feature with strong warming over land and relatively weak warming over ocean at 6 ka compared to 0 ka. Furthermore, the sea-ice-albedo positive feedback enhances this response. The reconstructions of temperature show a stronger response to enhanced insolation in the annual mean temperature than winter and summer temperature. This is verified in the model simulations and the behaviour is attributed to the larger contribution from the large response in autumn. Despite a smaller insolation during winter at 6 ka, a pronounced warming centre is found over Barents Sea in winter in the simulations, which is also supported by the nearby northern Eurasian continental and Fennoscandian reconstructions. This indicates that in the Arctic region, the response of the ocean and the sea ice to the enhanced summer insolation is more important for the winter temperature than the synchronous decrease of the insolation. Article in Journal/Newspaper albedo Arctic Barents Sea Climate change Fennoscandian Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Barents Sea Climate of the Past 6 5 609 626
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
K. Holmgren
J. Nilsson
H. Körnich
A. Moberg
H. S. Sundqvist
Q. Zhang
Climate change between the mid and late Holocene in northern high latitudes – Part 2: Model-data comparisons
topic_facet Environmental pollution
TD172-193.5
Environmental protection
TD169-171.8
Environmental sciences
GE1-350
description The climate response over northern high latitudes to the mid-Holocene orbital forcing has been investigated in three types of PMIP (Paleoclimate Modelling Intercomparison Project) simulations with different complexity of the modelled climate system. By first undertaking model-data comparison, an objective selection method has been applied to evaluate the capability of the climate models to reproduce the spatial response pattern seen in proxy data. The possible feedback mechanisms behind the climate response have been explored based on the selected model simulations. Subsequent model-model comparisons indicate the importance of including the different physical feedbacks in the climate models. The comparisons between the proxy-based reconstructions and the best fit selected simulations show that over the northern high latitudes, summer temperature change follows closely the insolation change and shows a common feature with strong warming over land and relatively weak warming over ocean at 6 ka compared to 0 ka. Furthermore, the sea-ice-albedo positive feedback enhances this response. The reconstructions of temperature show a stronger response to enhanced insolation in the annual mean temperature than winter and summer temperature. This is verified in the model simulations and the behaviour is attributed to the larger contribution from the large response in autumn. Despite a smaller insolation during winter at 6 ka, a pronounced warming centre is found over Barents Sea in winter in the simulations, which is also supported by the nearby northern Eurasian continental and Fennoscandian reconstructions. This indicates that in the Arctic region, the response of the ocean and the sea ice to the enhanced summer insolation is more important for the winter temperature than the synchronous decrease of the insolation.
format Article in Journal/Newspaper
author K. Holmgren
J. Nilsson
H. Körnich
A. Moberg
H. S. Sundqvist
Q. Zhang
author_facet K. Holmgren
J. Nilsson
H. Körnich
A. Moberg
H. S. Sundqvist
Q. Zhang
author_sort K. Holmgren
title Climate change between the mid and late Holocene in northern high latitudes – Part 2: Model-data comparisons
title_short Climate change between the mid and late Holocene in northern high latitudes – Part 2: Model-data comparisons
title_full Climate change between the mid and late Holocene in northern high latitudes – Part 2: Model-data comparisons
title_fullStr Climate change between the mid and late Holocene in northern high latitudes – Part 2: Model-data comparisons
title_full_unstemmed Climate change between the mid and late Holocene in northern high latitudes – Part 2: Model-data comparisons
title_sort climate change between the mid and late holocene in northern high latitudes – part 2: model-data comparisons
publisher Copernicus Publications
publishDate 2010
url https://doi.org/10.5194/cp-6-609-2010
https://doaj.org/article/b9cf1fd9fd284c8cb24d7fbfc8a1f034
geographic Arctic
Barents Sea
geographic_facet Arctic
Barents Sea
genre albedo
Arctic
Barents Sea
Climate change
Fennoscandian
Sea ice
genre_facet albedo
Arctic
Barents Sea
Climate change
Fennoscandian
Sea ice
op_source Climate of the Past, Vol 6, Iss 5, Pp 609-626 (2010)
op_relation http://www.clim-past.net/6/609/2010/cp-6-609-2010.pdf
https://doaj.org/toc/1814-9324
https://doaj.org/toc/1814-9332
doi:10.5194/cp-6-609-2010
1814-9324
1814-9332
https://doaj.org/article/b9cf1fd9fd284c8cb24d7fbfc8a1f034
op_doi https://doi.org/10.5194/cp-6-609-2010
container_title Climate of the Past
container_volume 6
container_issue 5
container_start_page 609
op_container_end_page 626
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