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Climatic Change

, Volume 140, Issue 3–4, pp 593–604 | Cite as

Global warming and local air pollution have reduced wheat yields in India

  • Ridhima Gupta
  • E. Somanathan
  • Sagnik Dey
Article

Abstract

We use regression analysis on data from 208 districts over the period 1981–2009 to examine the impact of temperature and solar radiation (affected by pollution from aerosols) on wheat yields in India. We find that a 1 °C increase in average daily maximum and minimum temperatures tends to lower yields by 2–4% each. A 1% increase in solar radiation increases yields by nearly 1%. Yields are estimated to be about 5.2% lower than they would have been if temperatures had not increased during the study period. We combine the estimated impacts of weather on yield with the estimated impacts of aerosol pollution (measured by moderate resolution imaging spectroradiometer sensor in terms of aerosol optical depth, aerosol optical depth (AOD) in 2001–2013) on weather to compute the net impact of reducing aerosol pollution on wheat yields. A one-standard-deviation decrease in AOD is estimated to increase yields by about 4.8%. Our results imply reducing regional pollution and curbing global warming in the coming decades can counter wheat yield losses.

Keywords

Solar Radiation Minimum Temperature Aerosol Optical Depth Support Information Wheat Yield 
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.

Notes

Acknowledgments

Sagnik Dey acknowledges funding from the Department of Science and Technology, Govt. of India (DST/CCP/PR/11/2011) through a research project operational at IIT Delhi (IITD/IRD/RP2580).

Supplementary material

10584_2016_1878_MOESM1_ESM.pdf (140 kb)
ESM 1 (PDF 139 kb)

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Copyright information

© Springer Science+Business Media Dordrecht 2016

Authors and Affiliations

  1. 1.Indian School of BusinessHyderabadIndia
  2. 2.Economics and Planning Unit, Indian Statistical InstituteDelhiIndia
  3. 3.Centre for Atmospheric Sciences, Indian Institute of TechnologyDelhiIndia

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