Climatic Change

, Volume 134, Issue 1–2, pp 311–326 | Cite as

Using historical climate observations to understand future climate change crop yield impacts in the Southeastern US

  • Davide Cammarano
  • David Zierden
  • Lydia Stefanova
  • Senthold Asseng
  • James J. O’Brien
  • James W. Jones


Historical weather data (1900–2000) of the Southeast U.S.A. was divided into baseline (neutral, 1981–2000), warm (1935–1954) and cold (1958–1977) periods and used in impact simulation experiments to understand climate effects on a summer and a winter crop. Simulated summer crop (maize) yields were lower in the warm than the cold period, but also low during a neutral period. Simulated winter crop (wheat) yields were higher during the neutral period than during the warm and cold periods. A higher average temperature of a given period did not necessarily translate to lower crop yields. Specifically, the summer crop (maize) experienced about 7 % reduction in growing season length per degree increase in mean air temperature, and about 5 % for the winter (wheat) crop. Overall, the simulated maize yield was reduced by 13 % and wheat yield by 6.5 % per unit of increase temperature. In conclusion, simulated yield reduction per unit increase in mean temperature was reduced during the neutral period for the summer while for the winter crop there were fewer differences between the warm and neutral periods. The summer crop was sensitive to changes of mean growing season temperatures while the winter crops was sensitive to changes in CO2.


Warm Period Cold Period Maize Yield Winter Crop Grow Season Length 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



We thank the South East Climate Consortium (SECC) and NOAA’s Regional Integrated Sciences and Assessments (RISA) program for support.

We also thank the anonymous referees for the valuable comments and suggestions that helped improve the manuscript.


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Copyright information

© Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  • Davide Cammarano
    • 1
    • 2
  • David Zierden
    • 3
    • 4
  • Lydia Stefanova
    • 3
  • Senthold Asseng
    • 1
  • James J. O’Brien
    • 3
    • 5
  • James W. Jones
    • 1
    • 5
  1. 1.Agricultural and Biological EngineeringUniversity of FloridaGainesvilleUSA
  2. 2.James Hutton InstituteDundeeUK
  3. 3.Center for Ocean-Atmospheric Prediction Studies (COAPS)Florida State UniversityTallahasseeUSA
  4. 4.Florida Climate CenterFlorida State UniversityTallahasseeUSA
  5. 5.Florida Climate InstituteUniversity of FloridaGainesvilleUSA

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