Effect of Climatic Precession on Dansgaard-Oeschger-Like Oscillations ...
<!--!introduction!--> Using the climate model MIROC4m, we simulate self-sustained oscillations of millennial- scale periodicity in the climate and Atlantic meridional overturning circulation under glacial conditions. We show two cases of extreme climatic precession and examine the mechanism of...
Main Authors: | , , , , |
---|---|
Format: | Conference Object |
Language: | unknown |
Published: |
GFZ German Research Centre for Geosciences
2023
|
Subjects: | |
Online Access: | https://dx.doi.org/10.57757/iugg23-3869 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020676 |
id |
ftdatacite:10.57757/iugg23-3869 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.57757/iugg23-3869 2023-07-23T04:20:38+02:00 Effect of Climatic Precession on Dansgaard-Oeschger-Like Oscillations ... Kuniyoshi, Yuta Abe-Ouchi, Ayako Sherriff-Tadano, Sam Chan, Wing-Le Saito, Fuyuki 2023 https://dx.doi.org/10.57757/iugg23-3869 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020676 unknown GFZ German Research Centre for Geosciences Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 Article ConferencePaper Oral 2023 ftdatacite https://doi.org/10.57757/iugg23-3869 2023-07-03T22:06:11Z <!--!introduction!--> Using the climate model MIROC4m, we simulate self-sustained oscillations of millennial- scale periodicity in the climate and Atlantic meridional overturning circulation under glacial conditions. We show two cases of extreme climatic precession and examine the mechanism of these oscillations. When the climatic precession corresponds to strong (weak) boreal seasonality, the period of the oscillation is about 1,500 (3,000) years. During the stadial, hot (cool) summer conditions in the Northern Hemisphere contribute to thin (thick) sea ice, which covers the deep convection sites, triggering early (late) abrupt climate change. During the interstadial, as sea ice is thin (thick), cold deep-water forms and cools the subsurface quickly (slowly), which influences the stratification of the North Atlantic Ocean. We show that the oscillations are explained by the internal feedbacks of the atmosphere-sea ice-ocean system, especially subsurface ocean temperature change and salt advection ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... Conference Object North Atlantic Sea ice DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
description |
<!--!introduction!--> Using the climate model MIROC4m, we simulate self-sustained oscillations of millennial- scale periodicity in the climate and Atlantic meridional overturning circulation under glacial conditions. We show two cases of extreme climatic precession and examine the mechanism of these oscillations. When the climatic precession corresponds to strong (weak) boreal seasonality, the period of the oscillation is about 1,500 (3,000) years. During the stadial, hot (cool) summer conditions in the Northern Hemisphere contribute to thin (thick) sea ice, which covers the deep convection sites, triggering early (late) abrupt climate change. During the interstadial, as sea ice is thin (thick), cold deep-water forms and cools the subsurface quickly (slowly), which influences the stratification of the North Atlantic Ocean. We show that the oscillations are explained by the internal feedbacks of the atmosphere-sea ice-ocean system, especially subsurface ocean temperature change and salt advection ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... |
format |
Conference Object |
author |
Kuniyoshi, Yuta Abe-Ouchi, Ayako Sherriff-Tadano, Sam Chan, Wing-Le Saito, Fuyuki |
spellingShingle |
Kuniyoshi, Yuta Abe-Ouchi, Ayako Sherriff-Tadano, Sam Chan, Wing-Le Saito, Fuyuki Effect of Climatic Precession on Dansgaard-Oeschger-Like Oscillations ... |
author_facet |
Kuniyoshi, Yuta Abe-Ouchi, Ayako Sherriff-Tadano, Sam Chan, Wing-Le Saito, Fuyuki |
author_sort |
Kuniyoshi, Yuta |
title |
Effect of Climatic Precession on Dansgaard-Oeschger-Like Oscillations ... |
title_short |
Effect of Climatic Precession on Dansgaard-Oeschger-Like Oscillations ... |
title_full |
Effect of Climatic Precession on Dansgaard-Oeschger-Like Oscillations ... |
title_fullStr |
Effect of Climatic Precession on Dansgaard-Oeschger-Like Oscillations ... |
title_full_unstemmed |
Effect of Climatic Precession on Dansgaard-Oeschger-Like Oscillations ... |
title_sort |
effect of climatic precession on dansgaard-oeschger-like oscillations ... |
publisher |
GFZ German Research Centre for Geosciences |
publishDate |
2023 |
url |
https://dx.doi.org/10.57757/iugg23-3869 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020676 |
genre |
North Atlantic Sea ice |
genre_facet |
North Atlantic Sea ice |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.57757/iugg23-3869 |
_version_ |
1772185190617055232 |