Abstract

http://ssrn.com/abstract=939593
 
 

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The Economic Impacts of Climate Change: Evidence from Agricultural Profits and Random Fluctuations in Weather


Olivier Deschenes


University of California, Santa Barbara - College of Letters & Science - Department of Economics; National Bureau of Economic Research (NBER); Institute for the Study of Labor (IZA)

Michael Greenstone


University of Chicago - Department of Economics; Massachusetts Institute of Technology (MIT) - Department of Economics; National Bureau of Economic Research (NBER)

July 2004

MIT Department of Economics Research Paper No. 04-26

Abstract:     
This paper measures the economic impact of climate change on US agricultural land by estimating the effect of the presumably random year-to-year variation in temperature and precipitation on agricultural profits. Using long-run climate change predictions from the Hadley 2 Model, the preferred estimates indicate that climate change will lead to a $1.3 billion (2002$) or 4.0% increase in annual profits. The 95% confidence interval ranges from -$0.5 billion to $3.1 billion and the impact is robust to a wide variety of specification checks, so large negative or positive effects are unlikely. There is considerable heterogeneity in the effect across the country with California's predicted impact equal to -$0.75 billion (or nearly 15% of state agricultural profits). Further, the analysis indicates that the predicted increases in temperature and precipitation will have virtually no effect on yields among the most important crops, which suggest that the small effect on profits are not due to short-run price increases. The paper also implements the hedonic approach that is predominant in the previous literature and finds that it may be unreliable, because it produces estimates of the effect of climate change that are extremely sensitive to seemingly minor decisions about the appropriate control variables, sample and weighting. Overall, the findings contradict the popular view that climate change will have substantial negative welfare consequences for the US agricultural sector.

Number of Pages in PDF File: 46

Keywords: Costs of climate change, hedonics, agricultural profits, agricultural production, crop yields

JEL Classification: Q50, Q12, Q54, Q51

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Date posted: October 25, 2006  

Suggested Citation

Deschenes, Olivier and Greenstone, Michael, The Economic Impacts of Climate Change: Evidence from Agricultural Profits and Random Fluctuations in Weather (July 2004). MIT Department of Economics Research Paper No. 04-26. Available at SSRN: http://ssrn.com/abstract=939593 or http://dx.doi.org/10.2139/ssrn.939593

Contact Information

Olivier Deschenes
University of California, Santa Barbara - College of Letters & Science - Department of Economics ( email )
Santa Barbara, CA 93106
United States
National Bureau of Economic Research (NBER) ( email )
1050 Massachusetts Avenue
Cambridge, MA 02138
United States
Institute for the Study of Labor (IZA) ( email )
P.O. Box 7240
Bonn, D-53072
Germany
Michael Greenstone (Contact Author)
University of Chicago - Department of Economics ( email )
1126 East 59th Street
Chicago, IL 60637
United States
Massachusetts Institute of Technology (MIT) - Department of Economics ( email )
50 Memorial Drive
E52-391
Cambridge, MA 02142
United States
National Bureau of Economic Research (NBER)
1050 Massachusetts Avenue
Cambridge, MA 02138
United States
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