Cited by 1,103Climate variability and modelsClimate Change and Environmental ImpactMeteorological Phenomena and Simulations

Changes in Temperature and Precipitation Extremes in the IPCC Ensemble of Global Coupled Model Simulations

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Kharin, Viatcheslav V., Zwiers, Francis W., Zhang, Xuebin, Hegerl, Gabriele C.·2007·Journal of Climate

Abstract

Temperature and precipitation extremes and their potential future changes are evaluated in an ensemble of global coupled climate models participating in the Intergovernmental Panel on Climate Change (IPCC) diagnostic exercise for the Fourth Assessment Report (AR4). Climate extremes are expressed in terms of 20-yr return values of annual extremes of near-surface temperature and 24-h precipitation amounts. The simulated changes in extremes are documented for years 2046–65 and 2081–2100 relative to 1981–2000 in experiments with the Special Report on Emissions Scenarios (SRES) B1, A1B, and A2 emission scenarios. Overall, the climate models simulate present-day warm extremes reasonably well on the global scale, as compared to estimates from reanalyses. The model discrepancies in simulating cold extremes are generally larger than those for warm extremes, especially in sea ice–covered areas. Simulated present-day precipitation extremes are plausible in the extratropics, but uncertainties in extreme precipitation in the Tropics are very large, both in the models and the available observationally based datasets. Changes in warm extremes generally follow changes in the mean summertime temperature. Cold extremes warm faster than warm extremes by about 30%–40%, globally averaged. The excessive warming of cold extremes is generally confined to regions where snow and sea ice retreat with global warming. With the exception of northern polar latitudes, relative changes in the intensity of precipitation extremes generally exceed relative changes in annual mean precipitation, particularly in tropical and subtropical regions. Consistent with the increased intensity of precipitation extremes, waiting times for late-twentieth-century extreme precipitation events are reduced almost everywhere, with the exception of a few subtropical regions. The multimodel multiscenario consensus on the projected change in the globally averaged 20-yr return values of annual extremes of 24-h precipitation amounts is that there will be an increase of about 6% with each kelvin of global warming, with the bulk of models simulating values in the range of 4%–10% K−1. The very large intermodel disagreements in the Tropics suggest that some physical processes associated with extreme precipitation are not well represented in models. This reduces confidence in the projected changes in extreme precipitation.

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  • Important limitations in the ability of current models to simulate precipitation extremes have been recognized and are related in part to the use of parameterized convection.

    “Important limitations in the ability of current models to simulate precipitation extremes have also been recognized and are related in part to the use of parameterized convection [38, 43, 58, 89, 93].”

    From Precipitation Extremes Under Climate Change (2015) · cites this paper as [38]

  • There are large differences between tropical precipitation extremes in twentieth-century simulations in different models.

    “Additional reasons to doubt the response of tropical precipitation extremes in these global climate models include the large differences between tropical precipitation extremes in the twentieth-century simulations in different models [38]”

    From Precipitation Extremes Under Climate Change (2015) · cites this paper as [38]

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Authors
Kharin, V. V., Zwiers, F. W., Zhang, X., & Hegerl, G. C.
Affiliations
  • Environment and Climate Change Canada (CA)
  • Duke University (US)
Venue
Journal of Climate
Published
2007-04-15
Volume
20
Issue
8
Pages
1419-1444
ISSN
  • 0894-8755 (ISSN-L)
  • 1520-0442
OpenAlex
W2131957523
Cited by
1,103
References
51
Citations by year
2026: 19 · 2025: 30 · 2024: 46 · 2023: 68 · 2022: 91 · 2021: 77 · 2020: 67 · 2019: 57 · 2018: 61 · 2017: 55 · 2016: 70 · 2015: 67 · 2014: 88 · 2013: 93 · 2012: 70
FWCI
24.37
Type
journal article
Language
en
Open access
Locations
  • Journal of Climate (publishedVersion)
  • Edinburgh Research Explorer (University of Edinburgh) (submittedVersion, other-oa)
Funders
  • U.S. Department of Energy
  • Office of Science
  • Center for Neuroscience and Regenerative Medicine
  • Lawrence Livermore National Laboratory
Topics
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate variability and models
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate Change and Environmental Impact
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Meteorological Phenomena and Simulations
Keywords
temperature extremes, heavy rainfall, climate change projections, cold extremes, extreme heat, SRES scenarios, sea ice retreat, snow cover, tropical precipitation, IPCC AR4

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