Modeled seasonality of glacial abrupt climate events
Greenland ice cores, as well as many other paleo-archives from the northern hemisphere, recorded a series of 25 warm interstadial events, the so-called Dansgaard-Oeschger (D-O) events, during the last glacial period. We use the three-dimensional coupled global ocean-atmosphere-sea ice model ECBILT-C...
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ftreroch:oai:doc.rero.ch:321450 2023-05-15T16:29:21+02:00 Modeled seasonality of glacial abrupt climate events Flückiger, Jacqueline Knutti, Reto White, James Renssen, Hans 2018-06-18T17:58:53Z http://doc.rero.ch/record/321450/files/382_2008_Article_373.pdf eng eng http://doc.rero.ch/record/321450/files/382_2008_Article_373.pdf 2018 ftreroch 2023-02-16T17:32:39Z Greenland ice cores, as well as many other paleo-archives from the northern hemisphere, recorded a series of 25 warm interstadial events, the so-called Dansgaard-Oeschger (D-O) events, during the last glacial period. We use the three-dimensional coupled global ocean-atmosphere-sea ice model ECBILT-CLIO and force it with freshwater input into the North Atlantic to simulate abrupt glacial climate events, which we use as analogues for D-O events. We focus our analysis on the Northern Hemisphere. The simulated events show large differences in the regional and seasonal distribution of the temperature and precipitation changes. While the temperature changes in high northern latitudes and in the North Atlantic region are dominated by winter changes, the largest temperature increases in most other land regions are seen in spring. Smallest changes over land are found during the summer months. Our model simulations also demonstrate that the temperature and precipitation change patterns for different intensifications of the Atlantic meridional overturning circulation are not linear. The extent of the transitions varies, and local non-linearities influence the amplitude of the annual mean response as well as the response in different seasons. Implications for the interpretation of paleo-records are discussed Other/Unknown Material Greenland Greenland ice cores North Atlantic Sea ice RERO DOC Digital Library Greenland |
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Open Polar |
collection |
RERO DOC Digital Library |
op_collection_id |
ftreroch |
language |
English |
description |
Greenland ice cores, as well as many other paleo-archives from the northern hemisphere, recorded a series of 25 warm interstadial events, the so-called Dansgaard-Oeschger (D-O) events, during the last glacial period. We use the three-dimensional coupled global ocean-atmosphere-sea ice model ECBILT-CLIO and force it with freshwater input into the North Atlantic to simulate abrupt glacial climate events, which we use as analogues for D-O events. We focus our analysis on the Northern Hemisphere. The simulated events show large differences in the regional and seasonal distribution of the temperature and precipitation changes. While the temperature changes in high northern latitudes and in the North Atlantic region are dominated by winter changes, the largest temperature increases in most other land regions are seen in spring. Smallest changes over land are found during the summer months. Our model simulations also demonstrate that the temperature and precipitation change patterns for different intensifications of the Atlantic meridional overturning circulation are not linear. The extent of the transitions varies, and local non-linearities influence the amplitude of the annual mean response as well as the response in different seasons. Implications for the interpretation of paleo-records are discussed |
author |
Flückiger, Jacqueline Knutti, Reto White, James Renssen, Hans |
spellingShingle |
Flückiger, Jacqueline Knutti, Reto White, James Renssen, Hans Modeled seasonality of glacial abrupt climate events |
author_facet |
Flückiger, Jacqueline Knutti, Reto White, James Renssen, Hans |
author_sort |
Flückiger, Jacqueline |
title |
Modeled seasonality of glacial abrupt climate events |
title_short |
Modeled seasonality of glacial abrupt climate events |
title_full |
Modeled seasonality of glacial abrupt climate events |
title_fullStr |
Modeled seasonality of glacial abrupt climate events |
title_full_unstemmed |
Modeled seasonality of glacial abrupt climate events |
title_sort |
modeled seasonality of glacial abrupt climate events |
publishDate |
2018 |
url |
http://doc.rero.ch/record/321450/files/382_2008_Article_373.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice cores North Atlantic Sea ice |
genre_facet |
Greenland Greenland ice cores North Atlantic Sea ice |
op_relation |
http://doc.rero.ch/record/321450/files/382_2008_Article_373.pdf |
_version_ |
1766019047983415296 |