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Climate Extremes: Observations, Modeling, and Impacts
David R. Easterling,1*Gerald
A. Meehl,2Camille Parmesan,3Stanley A. Changnon,4Thomas R. Karl,1Linda O. Mearns2
One of the major concerns with a potential change in climate is
that an increase in extreme events will occur. Results ofobservational
studies suggest that in many areas that have beenanalyzed, changes in
total precipitation are amplified at thetails, and changes in some
temperature extremes have been observed.Model output has been analyzed
that shows changes in extreme eventsfor future climates, such as
increases in extreme high temperatures,decreases in extreme low
temperatures, and increases in intenseprecipitation events. In
addition, the societal infrastructureis becoming more sensitive to
weather and climate extremes, whichwould be exacerbated by climate
change. In wild plants and animals,climate-induced extinctions,
distributional and phenological changes,and species' range shifts are
being documented at an increasingrate. Several apparently gradual
biological changes are linkedto responses to extreme weather and
climate events.
1 National Oceanic and Atmospheric
Administration (NOAA)/National Climatic Data Center, 151 Patton Avenue,
Asheville, NC 28801, USA.
2 National Center for
Atmospheric Research, Boulder, CO 80303, USA.
3 Integrative Biology, University of Texas, Austin,
TX 78712, USA.
4 Illinois State Water Survey,
Champaign, IL 61820, USA.
*
To whom correspondence should be addressed. E-mail:
david.r.easterling{at}noaa.gov
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