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Spatial Patterns of Crop Yield Change by Emitted Pollutant.

Publication ,  Journal Article
Shindell, D; Faluvegi, G; Kasibhatla, P; Van Dingenen, R
Published in: Earth's future
February 2019

Field measurements and modeling have examined how temperature, precipitation, and exposure to carbon dioxide (CO2) and ozone affect major staple crops around the world. Most prior studies, however, have incorporated only a subset of these influences. Here we examine how emissions of each individual pollutant driving changes in these four factors affect present-day yields of wheat, maize (corn), and rice worldwide. Our statistical modeling indicates that for the global mean, climate and composition changes have decreased wheat and maize yields substantially whereas rice yields have increased. Well-mixed greenhouse gasses drive most of the impacts, though aerosol-induced cooling can be important, particularly for more polluted area including India and China. Maize yield losses are most strongly attributable to methane emissions (via both temperature and ozone). In tropical areas, wheat yield losses are primarily driven by CO2 (via temperature), whereas in temperate zones other well-mixed greenhouse gases dominate. Rice yields increase in tropical countries due to a larger impact from CO2 fertilization plus aerosol-induced cooling than losses due to CO2-induced warming and impacts of non-CO2 gasses, whereas there are net losses in temperate zones driven largely by methane and other non-CO2 gasses. Though further work is needed, particularly on the effects of aerosol changes and on nutritional impacts, these results suggest that crop yields over coming decades will be strongly influenced by changes in non-CO2 greenhouse gasses, ozone precursors, and aerosols and that these should be taking into account in plant-level models and when examining linkages between climate change mitigation and sustainable development.

Duke Scholars

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Published In

Earth's future

DOI

EISSN

2328-4277

ISSN

2328-4277

Publication Date

February 2019

Volume

7

Issue

2

Start / End Page

101 / 112

Related Subject Headings

  • 3707 Hydrology
  • 3702 Climate change science
  • 0502 Environmental Science and Management
  • 0406 Physical Geography and Environmental Geoscience
  • 0401 Atmospheric Sciences
 

Citation

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Shindell, D., Faluvegi, G., Kasibhatla, P., & Van Dingenen, R. (2019). Spatial Patterns of Crop Yield Change by Emitted Pollutant. Earth’s Future, 7(2), 101–112. https://doi.org/10.1029/2018ef001030
Shindell, Drew, Greg Faluvegi, Prasad Kasibhatla, and Rita Van Dingenen. “Spatial Patterns of Crop Yield Change by Emitted Pollutant.Earth’s Future 7, no. 2 (February 2019): 101–12. https://doi.org/10.1029/2018ef001030.
Shindell D, Faluvegi G, Kasibhatla P, Van Dingenen R. Spatial Patterns of Crop Yield Change by Emitted Pollutant. Earth’s future. 2019 Feb;7(2):101–12.
Shindell, Drew, et al. “Spatial Patterns of Crop Yield Change by Emitted Pollutant.Earth’s Future, vol. 7, no. 2, Feb. 2019, pp. 101–12. Epmc, doi:10.1029/2018ef001030.
Shindell D, Faluvegi G, Kasibhatla P, Van Dingenen R. Spatial Patterns of Crop Yield Change by Emitted Pollutant. Earth’s future. 2019 Feb;7(2):101–112.
Journal cover image

Published In

Earth's future

DOI

EISSN

2328-4277

ISSN

2328-4277

Publication Date

February 2019

Volume

7

Issue

2

Start / End Page

101 / 112

Related Subject Headings

  • 3707 Hydrology
  • 3702 Climate change science
  • 0502 Environmental Science and Management
  • 0406 Physical Geography and Environmental Geoscience
  • 0401 Atmospheric Sciences