University of California, Riverside

Earth Sciences

Department of Earth Sciences

Andy Ridgwell

Andy Ridgwell


Ph.D., University of Earth Anglia, UK, 2001

Specialty: Biogeochemical Modeling, Climate

Phone: (951) 827-3186
Fax: (951) 827-4324
Office: Geology 464

Research Interests:

The dynamics of and feedbacks between climate, global carbon cycling and atmospheric CO2, and life, particularly as reflected in the geological records and viewed (darkly) through numerical models.

Recent Projects:

Modeling past plankton ecosystem dynamics and evolution; understanding causes and consequences of changing carbon cycle dynamics through the Cenozoic; modeling marine trace metal cycles and understanding the molybdenum isotope proxy; quantifying ocean acidification and marine carbon cycling feedbacks on atmospheric CO2 and climate; assessing tropical coral reef connectivity and impacts of future global change; geoengineering -- impacts of solar radiation management schemes and assessment of carbon dioxide removal proposals.

(full list @

Goodwin, P., R.G. Williams, and A. Ridgwell, Sensitivity of global warming to carbon emissions due to ocean heating and carbon drawdown, Nature Geoscience, 8, 29–34 (2015).

Sánchez-Baracaldo, P., A. Ridgwell, and J.A. Raven, A Neoproterozoic Revolution in the Marine Nitrogen Cycle, Current Biology, 24, 652–657 (2014).

Couce, E., A. Ridgwell, and E.J. Hendy, Future habitat suitability for coral reef ecosystems under global warming and ocean acidification, Global Change Biology, DOI: 10.1111/gcb.12335 (2013).

Hönisch, B., A. Ridgwell, D.N. Schmidt, E. Thomas, S.J. Gibbs, A. Sluijs, R. Zeebe, L. Kump, R.C. Martindale, S.E. Greene, W. Kiessling, J. Ries, J.C. Zachos, D.L. Royer, S. Barker, T.M. Marchitto Jr., R. Moyer, C. Pelejero, P. Ziveri, G.L. Foster, B. Williams, The Geological Record of Ocean Acidification, Science, 335, 1058-1063 (2012).

Cui, Y., L. R. Kump, A. J. Ridgwell, A.J. Charles, C.K. Junium, A.F. Diefendorf, K.H. Freeman, N.M. Urban, and I.C. Harding, Slow release of fossil carbon during the Paleocene-Eocene Thermal Maximum, Nature Geoscience, DOI: 10.1038/NGEO1179 (2011).

Ridgwell, A., and D. N. Schmidt, Past constraints on the vulnerability of marine calcifiers to massive CO2 release, Nature Goescience, doi:10.1038/ngeo755 (2010).

Ridgwell, A., J. S. Singarayer, A. M. Hetherington, and P. Valdes, Tackling regional climate change by leaf albedo bio-geoengineering, Current Biology, 19, doi:10.1016/j.cub.2008.12.025 (2009).

Goodwin, P., R. G. Williams, A. Ridgwell, and M. J. Follows, Climate sensitivity to the carbon cycle modulated by past and future changes in ocean chemistry, Nature Geoscience, doi:10.1038/ngeo416 (2009).

Panchuk, K., A. Ridgwell, and L. R. Kump, Sedimentary response to Paleocene Eocene Thermal Maximum carbon release: A model-data comparison, Geology, 36, 315-318 (2008).

Ridgwell, A., and R. E. Zeebe, The role of the global carbonate cycle in the regulation and evolution of the Earth system, EPSL, 234, 299-315 (2005).

Ridgwell, A., A Mid Mesozoic Revolution in the regulation of ocean chemistry, Marine Geology, 217, 339-357 (2005).

Ridgwell, A. J., M. J. Kennedy, and K. Caldeira, Carbonate deposition, climate stability, and Neoproterozoic ice ages, Science, 302, 859-862 (2003).

Watson, A. J., D. C. E. Bakker, A. J. Ridgwell, P. W. Boyd, and C. S. Law, Effect of iron supply on Southern Ocean CO2 uptake and implications for glacial atmospheric CO2, Nature, 407, 730-733 (2000).

Ridgwell, A. J., S. J. Marshall, and K. Gregson, Consumption of atmospheric methane by soils: A process-based model, Global Biogeochemical Cycles, 13, 59-70 (1999).

Salje, E. K. H., A. Ridgwell, B. Gutter, B. Wruck, M. T. Dove, and G. Dolino, On the displacive character of the phase transition in quartz: A hard-mode spectroscopy study, J. Phys.: Condens. Matter, 4, 571-577 (1992).

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