Improvement of CLM4-CN by using N-limited GPP for determination of stomatal conductance, and comparions to observed runoff values from GSWP2 (Global Soil Wetness Project 2). Evaluations of CLM4-CN control and downregulation with GSWP2 for total runoff (mm/year), a) FLUXNET MTE, b) Control, c) Control – FLUXNET MTE, d) Downregulation – Control.
I am also currently working with graduate student Travis Andrews to test the hypothesis that irrigation in the Great Plains and Midwestern U.S. has an impact on precipitation in the Northeast U.S., using the NCAR CESM model (CAM-CLM) by conducting experiments with and without irrigation.
References
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Felzer, B., R.J. Oglesby, T. Webb III, and D. Hyman (1996). "Sensitivity of a general circulation model to changes in northern hemisphere ice sheets", Journal of Geophysical Research 101(D14): 19077-19092.
Felzer, B.,T. Webb III, and R.J. Oglesby (1998). "The impact of ice sheets, CO2, and orbital insolation on late Quaternary climates: Sensitivity experiments with a general circulation model", Quaternary Science Reviews, 17: 507-534.
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MacCracken, M. C., Barron, E. J., Easterling, D. R., Felzer, B. S., and Karl, T. R. (2003). “Climate change scenarios for the U.S. National Assessment”, Bulletin of the American Meteorological Society, DOI: 10.1175/BAMS-84-12-1711.
National Assessment Synthesis Team. (2000). “Climate change impacts on the United States: the potential consequences of climate variability and change”, prepared as part of the USGCRP for the NSTC and the U.S. Congress, Overview and Climate Foundation chapter.
Lee, E., Barford, C. L., Kucharik, C. J., Felzer, B. S., Foley, J. A. 2011. Role of turbulent heat fluxes over land in the monsoon over East Asia. International Journal of Geosciences, 2: 420-431.
Lee, E. and Felzer, B. S. 2013. Effects of Nitrogen Limitation on Hydrological Processes in CLM4-CN. Journal of Advances in Modeling Earth Systems. 5(4): 741-754. doi:10.1002/jame.20046.