Publication Abstracts

Kornhuber et al. 2023

Kornhuber, K., C. Lesk, C.F. Schleussner, J. Jägermeyr, P. Pfleiderer, and R.M. Horton, 2023: Risks of synchronized low yields are underestimated in climate and crop model projections. Nat. Commun., 14, no. 1, 3528, doi:10.1038/s41467-023-38906-7.

Simultaneous harvest failures across major crop-producing regions are a threat to global food security. Concurrent weather extremes driven by a strongly meandering jet stream could trigger such events, but so far this has not been quantified. Specifically, the ability of state-of-the art crop and climate models to adequately reproduce such high impact events is a crucial component for estimating risks to global food security. Here we find an increased likelihood of concurrent low yields during summers featuring meandering jets in observations and models. While climate models accurately simulate atmospheric patterns, associated surface weather anomalies and negative effects on crop responses are mostly underestimated in bias-adjusted simulations. Given the identified model biases, future assessments of regional and concurrent crop losses from meandering jet states remain highly uncertain. Our results suggest that model-blind spots for such high-impact but deeply-uncertain hazards have to be anticipated and accounted for in meaningful climate risk assessments.

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BibTeX Citation

@article{ko00700s,
  author={Kornhuber, K. and Lesk, C. and Schleussner, C. F. and Jägermeyr, J. and Pfleiderer, P. and Horton, R. M.},
  title={Risks of synchronized low yields are underestimated in climate and crop model projections},
  year={2023},
  journal={Nature Communication},
  volume={14},
  number={1},
  pages={3528},
  doi={10.1038/s41467-023-38906-7},
}

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RIS Citation

TY  - JOUR
ID  - ko00700s
AU  - Kornhuber, K.
AU  - Lesk, C.
AU  - Schleussner, C. F.
AU  - Jägermeyr, J.
AU  - Pfleiderer, P.
AU  - Horton, R. M.
PY  - 2023
TI  - Risks of synchronized low yields are underestimated in climate and crop model projections
JA  - Nat. Commun.
JO  - Nature Communication
VL  - 14
IS  - 1
SP  - 3528
DO  - 10.1038/s41467-023-38906-7
ER  -

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