Arctic Warming Suppressed by Remnant Glacial Ice Sheets in Past Interglacials
Abstract Time slice experiments for past interglacial climates of Marine Isotope Stage (MIS)1, MIS5e, and MIS11 are simulated using an atmosphere‐ocean‐vegetation coupled general circulation model with prescribed remnant ice sheet distributions. We examine Arctic climate responses to insolation inte...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2025-03-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2024GL111798 |
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| author | Lynn A. Hirose Ayako Abe‐Ouchi Wing‐Le Chan Ryouta O'ishi Masakazu Yoshimori Takashi Obase |
| author_facet | Lynn A. Hirose Ayako Abe‐Ouchi Wing‐Le Chan Ryouta O'ishi Masakazu Yoshimori Takashi Obase |
| author_sort | Lynn A. Hirose |
| collection | DOAJ |
| description | Abstract Time slice experiments for past interglacial climates of Marine Isotope Stage (MIS)1, MIS5e, and MIS11 are simulated using an atmosphere‐ocean‐vegetation coupled general circulation model with prescribed remnant ice sheet distributions. We examine Arctic climate responses to insolation intensity as well as remnant ice sheets through atmosphere‐ocean‐vegetation feedback quantitatively. During periods when Northern Hemisphere ice sheets remain, Arctic sea ice maintains a large extent in summer, and annual mean surface air temperatures are low enough to outweigh the warming expected from summer insolation intensity and greenhouse gases alone. This indicates that glacial ice sheets, due to their high albedo and their role as a heat sink, suppress the accumulation of heat in the Arctic Ocean in summer and the associated warming feedback. The results suggest a need to consider the history of remnant ice sheets and the duration of ice‐free periods to explain different Arctic climate responses within and between interglacials. |
| format | Article |
| id | doaj-art-eb4f0a7ca8484d88a1f2e18181bf9d91 |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-eb4f0a7ca8484d88a1f2e18181bf9d912025-08-20T03:52:42ZengWileyGeophysical Research Letters0094-82761944-80072025-03-01525n/an/a10.1029/2024GL111798Arctic Warming Suppressed by Remnant Glacial Ice Sheets in Past InterglacialsLynn A. Hirose0Ayako Abe‐Ouchi1Wing‐Le Chan2Ryouta O'ishi3Masakazu Yoshimori4Takashi Obase5Atmosphere and Ocean Research Institute the University of Tokyo Kashiwa JapanAtmosphere and Ocean Research Institute the University of Tokyo Kashiwa JapanAtmosphere and Ocean Research Institute the University of Tokyo Kashiwa JapanAtmosphere and Ocean Research Institute the University of Tokyo Kashiwa JapanAtmosphere and Ocean Research Institute the University of Tokyo Kashiwa JapanAtmosphere and Ocean Research Institute the University of Tokyo Kashiwa JapanAbstract Time slice experiments for past interglacial climates of Marine Isotope Stage (MIS)1, MIS5e, and MIS11 are simulated using an atmosphere‐ocean‐vegetation coupled general circulation model with prescribed remnant ice sheet distributions. We examine Arctic climate responses to insolation intensity as well as remnant ice sheets through atmosphere‐ocean‐vegetation feedback quantitatively. During periods when Northern Hemisphere ice sheets remain, Arctic sea ice maintains a large extent in summer, and annual mean surface air temperatures are low enough to outweigh the warming expected from summer insolation intensity and greenhouse gases alone. This indicates that glacial ice sheets, due to their high albedo and their role as a heat sink, suppress the accumulation of heat in the Arctic Ocean in summer and the associated warming feedback. The results suggest a need to consider the history of remnant ice sheets and the duration of ice‐free periods to explain different Arctic climate responses within and between interglacials.https://doi.org/10.1029/2024GL111798climate changeinterglacialArcticice sheetpaleoclimate modelingclimate feedback |
| spellingShingle | Lynn A. Hirose Ayako Abe‐Ouchi Wing‐Le Chan Ryouta O'ishi Masakazu Yoshimori Takashi Obase Arctic Warming Suppressed by Remnant Glacial Ice Sheets in Past Interglacials Geophysical Research Letters climate change interglacial Arctic ice sheet paleoclimate modeling climate feedback |
| title | Arctic Warming Suppressed by Remnant Glacial Ice Sheets in Past Interglacials |
| title_full | Arctic Warming Suppressed by Remnant Glacial Ice Sheets in Past Interglacials |
| title_fullStr | Arctic Warming Suppressed by Remnant Glacial Ice Sheets in Past Interglacials |
| title_full_unstemmed | Arctic Warming Suppressed by Remnant Glacial Ice Sheets in Past Interglacials |
| title_short | Arctic Warming Suppressed by Remnant Glacial Ice Sheets in Past Interglacials |
| title_sort | arctic warming suppressed by remnant glacial ice sheets in past interglacials |
| topic | climate change interglacial Arctic ice sheet paleoclimate modeling climate feedback |
| url | https://doi.org/10.1029/2024GL111798 |
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