Show simple item record

contributor authorLoikith, Paul C.
contributor authorBroccoli, Anthony J.
date accessioned2017-06-09T17:09:21Z
date available2017-06-09T17:09:21Z
date copyright2015/03/01
date issued2014
identifier issn0894-8755
identifier otherams-80251.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4223122
description abstractirculation patterns associated with extreme temperature days over North America, as simulated by a suite of climate models, are compared with those obtained from observations. The authors analyze 17 coupled atmosphere?ocean general circulation models contributing to the fifth phase of the Coupled Model Intercomparison Project. Circulation patterns are defined as composites of anomalies in sea level pressure and 500-hPa geopotential height concurrent with days in the tails of temperature distribution. Several metrics used to systematically describe circulation patterns associated with extreme temperature days are applied to both the observed and model-simulated data. Additionally, self-organizing maps are employed as a means of comparing observed and model-simulated circulation patterns across the North American domain. In general, the multimodel ensemble resembles the observed patterns well, especially in areas removed from complex geographic features (e.g., mountains and coastlines). Individual model results vary; however, the majority of models capture the major features observed. The multimodel ensemble captures several key features, including regional variations in the strength and orientation of atmospheric circulation patterns associated with extreme temperatures, both near the surface and aloft, as well as variations with latitude and season. The results from this work suggest that these models can be used to comprehensively examine the role that changes in atmospheric circulation will play in projected changes in temperature extremes because of future anthropogenic climate warming.
publisherAmerican Meteorological Society
titleComparison between Observed and Model-Simulated Atmospheric Circulation Patterns Associated with Extreme Temperature Days over North America Using CMIP5 Historical Simulations
typeJournal Paper
journal volume28
journal issue5
journal titleJournal of Climate
identifier doi10.1175/JCLI-D-13-00544.1
journal fristpage2063
journal lastpage2079
treeJournal of Climate:;2014:;volume( 028 ):;issue: 005
contenttypeFulltext


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record