Publication Abstracts

Krakauer et al. 2020, in press

Krakauer, N.Y., B.I. Cook, and M.J. Puma, 2020: Effect of irrigation on humid heat extremes. Environ. Res. Lett., in press, doi:10.1088/1748-9326/ab9ecf.

Most studies of irrigation as an anthropogenic climate forcing focus on its cooling effects. However, irrigation also increases humidity, and so may not ameliorate humid heat and its extremes. We analyzed global climate model results over hot locations and seasons at high temporal resolution to estimate the impact of irrigation on humid heat extremes, quantified as different percentiles of wet-bulb temperature Tw, under contemporary conditions. We found that although irrigation reduced temperature, the median and higher percentiles of Tw, on average did not decrease. Increases in Tw percentile values and increases in frequency of dangerous Tw of several days per year due to irrigation were found in some densely populated regions, including the central United States and the Middle East, while the Ganges basin saw reduced Tw. Changes in Tw were partly associated with the differential regional impacts of irrigation on moisture transport. These results underline the importance of considering impacts of climate forcings on humidity as well as temperature in evaluating associated effects on heat extremes.

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BibTeX Citation

@unpublished{kr08000i,
  author={Krakauer, N. Y. and Cook, B. I. and Puma, M. J.},
  title={Effect of irrigation on humid heat extremes},
  year={2020},
  journal={Environ. Res. Lett.},
  doi={10.1088/1748-9326/ab9ecf},
  note={Manuscript accepted for publication}
}

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RIS Citation

TY  - INPR
ID  - kr08000i
AU  - Krakauer, N. Y.
AU  - Cook, B. I.
AU  - Puma, M. J.
PY  - 2020
TI  - Effect of irrigation on humid heat extremes
JA  - Environ. Res. Lett.
DO  - 10.1088/1748-9326/ab9ecf
ER  -

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