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Integrated model shows that atmospheric brown clouds and greenhouse gases have reduced rice harvests in India.
Proceedings of the National Academy of Sciences (PNAS) (2006)
  • Maximilian Auffhammer, University of California - Berkeley
  • V. Ramanathan, University of California - San Diego
  • Jeffrey R. Vincent, Duke University
Abstract

Previous studies have found that atmospheric brown clouds partially offset the warming effects of greenhouse gases. This finding suggests a tradeoff between the impacts of reducing emissions of aerosols and greenhouse gases. Results from a statistical model of historical rice harvests in India, coupled with regional climate scenarios from a parallel climate model, indicate that joint reductions in brown clouds and greenhouse gases would in fact have complementary, positive impacts on harvests. The results also imply that adverse climate changes due to brown clouds and greenhouse gases contributed to the slowdown in harvest growth that occurred during the past two decades.

Keywords
  • agricultural impact air pollution,
  • carbon dioxide,
  • warming,
  • climate change,
  • South Asia
Publication Date
October 31, 2006
Citation Information
Maximilian Auffhammer, V. Ramanathan and Jeffrey R. Vincent. "Integrated model shows that atmospheric brown clouds and greenhouse gases have reduced rice harvests in India." Proceedings of the National Academy of Sciences (PNAS) Vol. 103 Iss. 52 (2006)
Available at: http://works.bepress.com/auffhammer/17/