Mid-to-late Holocene temperature evolution and atmospheric dynamics over Europe in regional model simulations
The improvement in resolution of climate models has always been mentioned as one of the most important factors when investigating past climatic conditions, especially in order to evaluate and compare the results against proxy data. Despite this, only a few studies have tried to directly estimate the...
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Copernicus Publications
2016
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00011665 2023-05-15T17:37:01+02:00 Mid-to-late Holocene temperature evolution and atmospheric dynamics over Europe in regional model simulations Russo, Emmanuele Cubasch, Ulrich 2016-08 electronic https://doi.org/10.5194/cp-12-1645-2016 https://noa.gwlb.de/receive/cop_mods_00011665 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011622/cp-12-1645-2016.pdf https://cp.copernicus.org/articles/12/1645/2016/cp-12-1645-2016.pdf eng eng Copernicus Publications Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-12-1645-2016 https://noa.gwlb.de/receive/cop_mods_00011665 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011622/cp-12-1645-2016.pdf https://cp.copernicus.org/articles/12/1645/2016/cp-12-1645-2016.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2016 ftnonlinearchiv https://doi.org/10.5194/cp-12-1645-2016 2022-02-08T22:56:25Z The improvement in resolution of climate models has always been mentioned as one of the most important factors when investigating past climatic conditions, especially in order to evaluate and compare the results against proxy data. Despite this, only a few studies have tried to directly estimate the possible advantages of highly resolved simulations for the study of past climate change. Motivated by such considerations, in this paper we present a set of high-resolution simulations for different time slices of the mid-to-late Holocene performed over Europe using the state-of-the-art regional climate model COSMO-CLM. After proposing and testing a model configuration suitable for paleoclimate applications, the aforementioned mid-to-late Holocene simulations are compared against a new pollen-based climate reconstruction data set, covering almost all of Europe, with two main objectives: testing the advantages of high-resolution simulations for paleoclimatic applications, and investigating the response of temperature to variations in the seasonal cycle of insolation during the mid-to-late Holocene. With the aim of giving physically plausible interpretations of the mismatches between model and reconstructions, possible uncertainties of the pollen-based reconstructions are taken into consideration. Focusing our analysis on near-surface temperature, we can demonstrate that concrete advantages arise in the use of highly resolved data for the comparison against proxy-reconstructions and the investigation of past climate change. Additionally, our results reinforce previous findings showing that summertime temperatures during the mid-to-late Holocene were driven mainly by changes in insolation and that the model is too sensitive to such changes over Southern Europe, resulting in drier and warmer conditions. However, in winter, the model does not correctly reproduce the same amplitude of changes evident in the reconstructions, even if it captures the main pattern of the pollen data set over most of the domain for the time periods under investigation. Through the analysis of variations in atmospheric circulation we suggest that, even though the wintertime discrepancies between the two data sets in some areas are most likely due to high pollen uncertainties, in general the model seems to underestimate the changes in the amplitude of the North Atlantic Oscillation, overestimating the contribution of secondary modes of variability. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Niedersächsisches Online-Archiv NOA Climate of the Past 12 8 1645 1662 |
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article Verlagsveröffentlichung Russo, Emmanuele Cubasch, Ulrich Mid-to-late Holocene temperature evolution and atmospheric dynamics over Europe in regional model simulations |
topic_facet |
article Verlagsveröffentlichung |
description |
The improvement in resolution of climate models has always been mentioned as one of the most important factors when investigating past climatic conditions, especially in order to evaluate and compare the results against proxy data. Despite this, only a few studies have tried to directly estimate the possible advantages of highly resolved simulations for the study of past climate change. Motivated by such considerations, in this paper we present a set of high-resolution simulations for different time slices of the mid-to-late Holocene performed over Europe using the state-of-the-art regional climate model COSMO-CLM. After proposing and testing a model configuration suitable for paleoclimate applications, the aforementioned mid-to-late Holocene simulations are compared against a new pollen-based climate reconstruction data set, covering almost all of Europe, with two main objectives: testing the advantages of high-resolution simulations for paleoclimatic applications, and investigating the response of temperature to variations in the seasonal cycle of insolation during the mid-to-late Holocene. With the aim of giving physically plausible interpretations of the mismatches between model and reconstructions, possible uncertainties of the pollen-based reconstructions are taken into consideration. Focusing our analysis on near-surface temperature, we can demonstrate that concrete advantages arise in the use of highly resolved data for the comparison against proxy-reconstructions and the investigation of past climate change. Additionally, our results reinforce previous findings showing that summertime temperatures during the mid-to-late Holocene were driven mainly by changes in insolation and that the model is too sensitive to such changes over Southern Europe, resulting in drier and warmer conditions. However, in winter, the model does not correctly reproduce the same amplitude of changes evident in the reconstructions, even if it captures the main pattern of the pollen data set over most of the domain for the time periods under investigation. Through the analysis of variations in atmospheric circulation we suggest that, even though the wintertime discrepancies between the two data sets in some areas are most likely due to high pollen uncertainties, in general the model seems to underestimate the changes in the amplitude of the North Atlantic Oscillation, overestimating the contribution of secondary modes of variability. |
format |
Article in Journal/Newspaper |
author |
Russo, Emmanuele Cubasch, Ulrich |
author_facet |
Russo, Emmanuele Cubasch, Ulrich |
author_sort |
Russo, Emmanuele |
title |
Mid-to-late Holocene temperature evolution and atmospheric dynamics over Europe in regional model simulations |
title_short |
Mid-to-late Holocene temperature evolution and atmospheric dynamics over Europe in regional model simulations |
title_full |
Mid-to-late Holocene temperature evolution and atmospheric dynamics over Europe in regional model simulations |
title_fullStr |
Mid-to-late Holocene temperature evolution and atmospheric dynamics over Europe in regional model simulations |
title_full_unstemmed |
Mid-to-late Holocene temperature evolution and atmospheric dynamics over Europe in regional model simulations |
title_sort |
mid-to-late holocene temperature evolution and atmospheric dynamics over europe in regional model simulations |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/cp-12-1645-2016 https://noa.gwlb.de/receive/cop_mods_00011665 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011622/cp-12-1645-2016.pdf https://cp.copernicus.org/articles/12/1645/2016/cp-12-1645-2016.pdf |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-12-1645-2016 https://noa.gwlb.de/receive/cop_mods_00011665 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011622/cp-12-1645-2016.pdf https://cp.copernicus.org/articles/12/1645/2016/cp-12-1645-2016.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/cp-12-1645-2016 |
container_title |
Climate of the Past |
container_volume |
12 |
container_issue |
8 |
container_start_page |
1645 |
op_container_end_page |
1662 |
_version_ |
1766136699490926592 |