• Telephone: 858-534-4230 ext. 15
• Email: scpiper@ucsd.edu
• Location: 421 Vaughan Hall

Steve Piper is responsible for the principal modeling effort to forecast terrestrial exchange fluxes of the Earth’s carbon cycle regionally and globally by improving models calibrated retrospectively from 1981 to the present.

Activities

• Assess seasonal characteristics of carbon fluxes produced by the Biome-BGC and PEM models.
• Evaluate AVHRR- and MODIS-based vegetation indices and NPP produced by the PEM, with focus on the new GIMMS reanalysis.
• Compare predictions of existing Jena model with those of our existing SSC model, after re-aggregating source components to the SSC arrangement.
• Incorporate more realistic representation of ¹³C/¹²C into terrestrial source components.
• Modify oceanic source components of the SSC model particularly with respect to spatial variations in ¹³C/¹²C in surface layer.
• Construct dataset of interannually-varying oceanic temperature-dependent isotopic fractionation.

Education

• B.S., Stanford University
• Ph.D., Scripps Institution of Oceanography

Selected Publications

• C. D. Keeling, S. C. Piper, R. B. Bacastow, M. Wahlen, T. P. Whorf, M. Heimann, and H. A. Meijer, "Atmospheric CO2 and 13CO2 exchange with the terrestrial biosphere and oceans from 1978 to 2000: observations and carbon cycle implications", in A History of Atmospheric CO2 and Its Effects on Plants, Animals, and Ecosystems, editors, Ehleringer, J.R., T. E. Cerling, M. D. Dearing, Springer Verlag, New York, pp 83-113 (2005).
• H. Hashimoto, R. R. Nemani, M. A. White, W. M. Jolly, S. C. Piper, C. D. Keeling, R. B. Myneni, and S. W. Running, El Ni˜no-Southern Oscillation-induced variability in terrestrial carbon cycling, Journal of Geophysical Research, 109, D23110, doi:10.1029/2004JD004959, 2004.
• R. R. Nemani, C. D. Keeling, H. Hashimoto, W. M. Jolly, S. C. Piper, C. J. Tucker, R. B. Myneni, and S. W. Running, Climate-driven increase in global terrestrial net primary production from 1982 to 1999, Science, 300, 1560-1563, 2003.
• D. A. Clark, S. C. Piper, C. D. Keeling, and D. B. Clark, Tropical rain forest tree growth and atmospheric carbon dynamics linked to interannual temperature variation during 1984-2000, Proceedings of the National Academy of Sciences, vol. 100(10), 5852-5857, 2003.
• C. LeQue´re´, O. Aumont, L. Bopp, P. Bousquet, P. Ciais, R. Francey, M. Heimann, C. D. Keeling, R. F. Keeling, H. Kheshgi, P. Peylin, S. C. Piper, I. C. Prentice, and P. J. Rayner, Two decades of ocean CO2 sink and variability, Tellus, 55B, 649-656, 2003.
• J. C. Winslow, E. R. Hunt, Jr., and S. C. Piper, The influence of seasonal water availability on global C3 versus C4 grassland biomass and its implications for climate change research, Ecological Modelling 163, 153-173, 2003.