Willeit, Matteo; Ganopolski, Andrey; Calov, Reinhard; Brovkin, Victor (2019): Global mean CO2, temperature and sea level data from transient model simulations of Quaternary glacial cycles [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.902277, Supplement to: Willeit, M et al. (2019): Mid-Pleistocene transition in glacial cycles explained by declining CO2 and regolith removal. Science Advances, 5(4), eaav7337, https://doi.org/10.1126/sciadv.aav7337
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Abstract:
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.
Other version:
Willeit, Matteo; Ganopolski, Andrey; Calov, Reinhard; Brovkin, Victor (2019): Gloabal mean CO2, temperature and sea level data from transient model simulations of Quaternary glacial cycles, netCDF version. Willeit_etal_2019.nc
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | AGE | Age | ka BP | Willeit, Matteo | Geocode | |
| 2 | Carbon dioxide | CO2 | ppmv | Willeit, Matteo | modelled | |
| 3 | Temperature anomaly | T anomaly | °C | Willeit, Matteo | modelled | of global annual near surface mean air T, relative to preindustrial |
| 4 | Sea surface temperature, anomaly | SST anomaly | °C | Willeit, Matteo | modelled | of global annual mean, relative to preindustrial |
| 5 | Sea level, relative | Sea lev rel | m | Willeit, Matteo | modelled | relative to present day |
| 6 | δ18O | δ18O | ‰ | Willeit, Matteo | modelled | benthic |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
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