Assessment of summer extremes and climate variability over the North-East of North America as simulated by the Canadian Regional Climate Model

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dc.contributor.author Roy, Philippe
dc.contributor.author Gachon, Philippe
dc.contributor.author Laprise, René
dc.date.accessioned 2013-08-09T13:56:33Z
dc.date.available 2013-08-09T13:56:33Z
dc.date.copyright 2011
dc.date.issued 2011-08
dc.identifier.citation Roy, P., Gachon, P., & Laprise, R. (2012). Assessment of summer extremes and climate variability over the north-east of North America as simulated by the Canadian Regional Climate Model. International Journal of Climatology, 32(11), 1615-1627.doi:10.1002/joc.2382 en
dc.identifier.uri http://hdl.handle.net/10625/51489
dc.description.abstract The present study focuses on the evaluation and comparison of the ability of two versions of the Canadian Regional Climate Model (CRCM) driven by re-analyses (NCEP–NCAR) to reproduce the observed extremes and climate variability in summer (1961–1990). The analysed variables are daily precipitation, minimum and maximum temperatures over three regions located in north-eastern North America that are characterized by different topography and observation density. The validation has been performed with multiple climate extreme indices characterizing the frequency, intensity and duration of precipitation and temperature events. The assessment of the ability of the CRCM is done through an in-depth analysis of the statistical distribution, performance scores and interannual variability of extreme indices. The reference database has been constructed by kriging the daily observed data from local meteorological stations onto the CRCM 45-km grid. The vast majority of results over the three regions show that, with respect to the previous (i.e. 3.7.1) CRCM version, the latest version (4.1.1) improves in general the simulated extreme events. In particular, the intensity of extreme hot summer temperature, diurnal temperature range, wet days occurrence, seasonal dry spell, and to a lesser extent extreme cold summer temperature and heavy rainfall. The study suggests that improvements in the simulated extremes in the latest version are due mainly to the introduction of the new land surface scheme (CLASS 2.7), with a more sophisticated representation of the soil moisture content. This suggests the importance of surface processes parameterization as a potential cause of errors in simulated extremes. en
dc.format Text en
dc.format.extent 1 digital file (p. 1615-1627) en
dc.format.mimetype Application/pdf
dc.language.iso en
dc.publisher John Wiley & Sons en
dc.subject REGIONAL CLIMATE MODELLING en
dc.subject KRIGING en
dc.subject EXTREMES en
dc.subject VARIABILITY en
dc.subject NORTH AMERICA en
dc.subject CLIMATIC SEASONS en
dc.subject TOPOGRAPHY en
dc.title Assessment of summer extremes and climate variability over the North-East of North America as simulated by the Canadian Regional Climate Model en
dc.type Journal Article (peer-reviewed) en
idrc.project.number 106372
idrc.project.componentnumber 106372013
idrc.project.title International Research Initiative on Adaptation to Climate Change en
idrc.copyright.holder Royal Meteorological Society
idrc.dspace.access IDRC Only en
idrc.rims.adhocgroup IDRC SUPPORTED en
idrc.recordsserver.bcsnumber IC01-3527-41
idrc.noaccess Due to copyright restrictions the full text of this research output is not available in the IDRC Digital Library or by request from the IDRC Library. / Compte tenu des restrictions relatives au droit d'auteur, le texte intégral de cet extrant de recherche n'est pas accessible dans la Bibliothèque numérique du CRDI, et il n'est pas possible d'en faire la demande à la Bibliothéque du CRDI. en


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