Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

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. 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

Always quote above citation when using data! You can download the citation in several formats below.

RIS CitationBibTeX Citation

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):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1File contentContentKöhler, Peter
2File nameFile nameKöhler, Peter
3File formatFile formatKöhler, Peter
4File sizeFile sizekByteKöhler, Peter
5Uniform resource locator/link to fileURL fileKöhler, Peter
Size:
10 data points

Download Data

Download dataset as tab-delimited text (use the following character encoding: )

View dataset as HTML