Global mean CO2, temperature and sea level data from transient model simulations of Quaternary glacial cycles
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
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PANGAEA
2019
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| _version_ | 1867170092876300288 |
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| author | Willeit, Matteo Ganopolski, Andrey Calov, Reinhard Brovkin, Victor |
| author_facet | Willeit, Matteo Ganopolski, Andrey Calov, Reinhard Brovkin, Victor |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Variations in Earth's orbit pace the glacial-interglacial cycles of the Quaternary, but the mechanisms that transform regional and seasonal variations in solar insolation into glacial-interglacial cycles are still elusive. Here, we present transient simulations of coevolution of climate, ice sheets, and carbon cycle over the past 3 million years. We show that a gradual lowering of atmospheric CO2 and regolith removal are essential to reproduce the evolution of climate variability over the Quaternary. The long-term CO2 decrease leads to the initiation of Northern Hemisphere glaciation and an increase in the amplitude of glacial-interglacial variations, while the combined effect of CO2 decline and regolith removal controls the timing of the transition from a 41,000- to 100,000-year world. Our results suggest that the current CO2 concentration is unprecedented over the past 3 million years and that global temperature never exceeded the preindustrial value by more than 2°C during the Quaternary. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_902277 |
| institution | PANGAEA |
| language | en |
| publishDate | 2019 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Global mean CO2, temperature and sea level data from transient model simulations of Quaternary glacial cycles Willeit, Matteo Ganopolski, Andrey Calov, Reinhard Brovkin, Victor AGE; Carbon dioxide; CO2; glacial cylcles; mid-Pleistocene transition; Model; modelled; Quaternary; Sea level, relative; Sea surface temperature, anomaly; Temperature anomaly; δ18O Variations in Earth's orbit pace the glacial-interglacial cycles of the Quaternary, but the mechanisms that transform regional and seasonal variations in solar insolation into glacial-interglacial cycles are still elusive. Here, we present transient simulations of coevolution of climate, ice sheets, and carbon cycle over the past 3 million years. We show that a gradual lowering of atmospheric CO2 and regolith removal are essential to reproduce the evolution of climate variability over the Quaternary. The long-term CO2 decrease leads to the initiation of Northern Hemisphere glaciation and an increase in the amplitude of glacial-interglacial variations, while the combined effect of CO2 decline and regolith removal controls the timing of the transition from a 41,000- to 100,000-year world. Our results suggest that the current CO2 concentration is unprecedented over the past 3 million years and that global temperature never exceeded the preindustrial value by more than 2°C during the Quaternary. |
| title | Global mean CO2, temperature and sea level data from transient model simulations of Quaternary glacial cycles |
| topic | AGE; Carbon dioxide; CO2; glacial cylcles; mid-Pleistocene transition; Model; modelled; Quaternary; Sea level, relative; Sea surface temperature, anomaly; Temperature anomaly; δ18O |
| url | https://doi.org/10.1594/PANGAEA.902277 |