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An estimate of monthly global emissions of anthropogenic CO2: Impact on the seasonal cycle of atmospheric CO2. Journal of Geophysical Research. 113:1–10.. 2008.
Evidence for recent changes in a surface-air warming singularity in late winter over central North America. Geophysical Research Letters. 30(9). 2003.
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Responses of energy use to climate change: A climate modeling study. Geophysical Research Letters. 33:2–5.. 2006.
State-By-State Carbon Dioxide Emissions from Fossil Fuel Use in the United States 1960–2000. Mitigation and Adaptation Strategies for Global Change. 10:659–674.. 2005.
The Temporal and Spatial Distribution of Carbon Dioxide Emissions from Fossil-Fuel Use in North America. Journal of Applied Meteorology and Climatology. 48:2528–2542.. 2009.