Hasenclever, Jörg; Knorr, Gregor; Rüpke, Lars H; Köhler, Peter; Morgan, Jason Phipps; Garofalo, Kristin; Barker, Stephen; Lohmann, Gerrit; Hall, Ian R (2017): Simulated changes in the carbon cycle using the BICYCLE model due to volcanic outgassing of CO2 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.874815, Supplement to: Hasenclever, J et al. (2017): Sea level fall during glaciation stabilized atmospheric CO2 by enhanced volcanic degassing. Nature Communications, 8, 15867, https://doi.org/10.1038/ncomms15867
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Abstract:
Paleo-climate records and geodynamic modelling indicate the existence of complex interactions between glacial sea level changes, volcanic degassing, and atmospheric CO2, which may have modulated the climate system's descent into the last ice age. Between ~85-70 ka, during an interval of decreasing axial tilt, the orbital component in global temperature records gradually declined, while atmospheric CO2, instead of continuing is long-term correlation with Antarctic temperature, remained relatively stable. Based on novel global geodynamic models and the joint interpretation of paleo-proxy data as well as biogeochemical simulations, we show that a sea level fall in this interval caused enhanced pressure-release melting in the uppermost mantle, which may have induced a surge in magma and CO2 fluxes from mid-ocean ridges and oceanic hotspot volcanoes. Our results reveal a hitherto unrecognised negative feedback between glaciation and atmospheric CO2 predominantly controlled by marine volcanism on multi-millennial (suborbital) timescales of ~ 5,000-15,000 years.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | File content | Content | Köhler, Peter | |||
| 2 | File name | File name | Köhler, Peter | |||
| 3 | File format | File format | Köhler, Peter | |||
| 4 | File size | File size | kByte | Köhler, Peter | ||
| 5 | Uniform resource locator/link to file | URL file | Köhler, Peter |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
10 data points
Data
| 1 Content | 2 File name | 3 File format | 4 File size [kByte] | 5 URL file |
|---|---|---|---|---|
| Simulated time series using the BICYCLE carbon cycle model of the airborne fraction (%) of subaerial volcanic CO2 emissions for different scenarios (S1, S2, S3, S4) and pulse responses under different background conditions (83ka, pre-industrial) | hasenclever2017nc_bicycle_af_time.txt | zipped TXT | 13.976 | hasenclever2017nc_bicycle_af_time.zip |
| Simulated time series using the BICYCLE carbon cycle model of changes in atmospheric CO2 (ppm) following volcanic CO2 emissions for different scenarios (S1, S2, S3, S4), releasing CO2 either completely subaerial or completely submarine | hasenclever2017nc_bicycle_dco2_time.txt | zipped TXT | 14.794 | hasenclever2017nc_bicycle_dco2_time.zip |