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More extreme precipitation in the world’s dry and wet regions

Nature climate change, 2016-05, Vol.6 (5), p.508-513 [Peer Reviewed Journal]

Copyright Nature Publishing Group May 2016 ;ISSN: 1758-678X ;EISSN: 1758-6798 ;DOI: 10.1038/nclimate2941

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  • Title:
    More extreme precipitation in the world’s dry and wet regions
  • Author: Donat, Markus G. ; Lowry, Andrew L. ; Alexander, Lisa V. ; O’Gorman, Paul A. ; Maher, Nicola
  • Is Part Of: Nature climate change, 2016-05, Vol.6 (5), p.508-513
  • Description: Intensification of the hydrological cycle is expected to accompany a warming climate. It has been suggested that changes in the spatial distribution of precipitation will amplify differences between dry and wet regions, but this has been disputed for changes over land. Furthermore, precipitation changes may differ not only between regions but also between different aspects of precipitation, such as totals and extremes. Here we investigate changes in these two aspects in the world's dry and wet regions using observations and global climate models. Despite uncertainties in total precipitation changes, extreme daily precipitation averaged over both dry and wet regimes shows robust increases in both observations and climate models over the past six decades. Climate projections for the rest of the century show continued intensification of daily precipitation extremes. Increases in total and extreme precipitation in dry regions are linearly related to the model-specific global temperature change, so that the spread in projected global warming partly explains the spread in precipitation intensification in these regions by the late twenty-first century. This intensification has implications for the risk of flooding as the climate warms, particularly for the world's dry regions.
  • Publisher: London: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 1758-678X
    EISSN: 1758-6798
    DOI: 10.1038/nclimate2941
  • Source: ProQuest Central
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