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Case study of the effects of atmospheric aerosols and regional haze on agriculture: an opportunity to enhance crop yields in China through emission controls?

Publication ,  Journal Article
Chameides, WL; Yu, H; Liu, SC; Bergin, M; Zhou, X; Mearns, L; Wang, G; Kiang, CS; Saylor, RD; Luo, C; Huang, Y; Steiner, A; Giorgi, F
Published in: Proceedings of the National Academy of Sciences of the United States of America
November 1999

The effect of atmospheric aerosols and regional haze from air pollution on the yields of rice and winter wheat grown in China is assessed. The assessment is based on estimates of aerosol optical depths over China, the effect of these optical depths on the solar irradiance reaching the earth's surface, and the response of rice and winter wheat grown in Nanjing to the change in solar irradiance. Two sets of aerosol optical depths are presented: one based on a coupled, regional climate/air quality model simulation and the other inferred from solar radiation measurements made over a 12-year period at meteorological stations in China. The model-estimated optical depths are significantly smaller than those derived from observations, perhaps because of errors in one or both sets of optical depths or because the data from the meteorological stations has been affected by local pollution. Radiative transfer calculations using the smaller, model-estimated aerosol optical depths indicate that the so-called "direct effect" of regional haze results in an approximately 5-30% reduction in the solar irradiance reaching some of China's most productive agricultural regions. Crop-response model simulations suggest an approximately 1:1 relationship between a percentage increase (decrease) in total surface solar irradiance and a percentage increase (decrease) in the yields of rice and wheat. Collectively, these calculations suggest that regional haze in China is currently depressing optimal yields of approximately 70% of the crops grown in China by at least 5-30%. Reducing the severity of regional haze in China through air pollution control could potentially result in a significant increase in crop yields and help the nation meet its growing food demands in the coming decades.

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Published In

Proceedings of the National Academy of Sciences of the United States of America

DOI

EISSN

1091-6490

ISSN

0027-8424

Publication Date

November 1999

Volume

96

Issue

24

Start / End Page

13626 / 13633

Related Subject Headings

  • Solar System
  • Radiation
  • Crops, Agricultural
  • Computer Simulation
  • China
  • Air Pollution
  • Air Pollutants
  • Agriculture
 

Citation

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Chameides, W. L., Yu, H., Liu, S. C., Bergin, M., Zhou, X., Mearns, L., … Giorgi, F. (1999). Case study of the effects of atmospheric aerosols and regional haze on agriculture: an opportunity to enhance crop yields in China through emission controls? Proceedings of the National Academy of Sciences of the United States of America, 96(24), 13626–13633. https://doi.org/10.1073/pnas.96.24.13626
Chameides, W. L., H. Yu, S. C. Liu, M. Bergin, X. Zhou, L. Mearns, G. Wang, et al. “Case study of the effects of atmospheric aerosols and regional haze on agriculture: an opportunity to enhance crop yields in China through emission controls?Proceedings of the National Academy of Sciences of the United States of America 96, no. 24 (November 1999): 13626–33. https://doi.org/10.1073/pnas.96.24.13626.
Chameides WL, Yu H, Liu SC, Bergin M, Zhou X, Mearns L, et al. Case study of the effects of atmospheric aerosols and regional haze on agriculture: an opportunity to enhance crop yields in China through emission controls? Proceedings of the National Academy of Sciences of the United States of America. 1999 Nov;96(24):13626–33.
Chameides, W. L., et al. “Case study of the effects of atmospheric aerosols and regional haze on agriculture: an opportunity to enhance crop yields in China through emission controls?Proceedings of the National Academy of Sciences of the United States of America, vol. 96, no. 24, Nov. 1999, pp. 13626–33. Epmc, doi:10.1073/pnas.96.24.13626.
Chameides WL, Yu H, Liu SC, Bergin M, Zhou X, Mearns L, Wang G, Kiang CS, Saylor RD, Luo C, Huang Y, Steiner A, Giorgi F. Case study of the effects of atmospheric aerosols and regional haze on agriculture: an opportunity to enhance crop yields in China through emission controls? Proceedings of the National Academy of Sciences of the United States of America. 1999 Nov;96(24):13626–13633.
Journal cover image

Published In

Proceedings of the National Academy of Sciences of the United States of America

DOI

EISSN

1091-6490

ISSN

0027-8424

Publication Date

November 1999

Volume

96

Issue

24

Start / End Page

13626 / 13633

Related Subject Headings

  • Solar System
  • Radiation
  • Crops, Agricultural
  • Computer Simulation
  • China
  • Air Pollution
  • Air Pollutants
  • Agriculture