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Article Abstract

Geoengineering has been proposed to stabilize global temperature, but its impacts on crop production and stability are not fully understood. A few case studies suggest that certain crops are likely to benefit from solar dimming geoengineering, yet we show that geoengineering is projected to have detrimental effects for groundnut. Using an ensemble of crop-climate model simulations, we illustrate that groundnut yields in India undergo a statistically significant decrease of up to 20% as a result of solar dimming geoengineering relative to RCP4.5. It is somewhat reassuring, however, to find that after a sustained period of 50 years of geoengineering crop yields return to the nongeoengineered values within a few years once the intervention is ceased.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5267972PMC
http://dx.doi.org/10.1002/2016GL071209DOI Listing

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Article Synopsis
  • Solar geoengineering (SG) and cutting down CO emissions can both help with climate change, but how they affect food production is still not totally clear.
  • Researchers used a special crop model to see how six major crops would respond to different SG techniques and emissions cuts, finding that while all methods can cool down the planet enough to help crops, they have different effects on the crop yields.
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