Bibliographie complète
Chances of Short-Term Cooling Estimated from a Selection of CMIP5-Based Climate Scenarios during 2006–35 over Canada
Type de ressource
Auteurs/contributeurs
- Grenier, Patrick (Auteur)
- De Elía, Ramón (Auteur)
- Chaumont, Diane (Auteur)
Titre
Chances of Short-Term Cooling Estimated from a Selection of CMIP5-Based Climate Scenarios during 2006–35 over Canada
Résumé
Abstract
The path toward a warmer global climate is not smooth, but, rather, is made up of a succession of positive and negative temperature trends, with cooling having more chance to occur the shorter the time scale considered. In this paper, estimates of the probabilities of short-term cooling (
P
cool
) during the period 2006–35 are performed for 5146 locations across Canada. Probabilities of cooling over durations from 5 to 25 yr come from an ensemble of 60 climate scenarios, based on three different methods using a gridded observational product and CMIP5 climate simulations. These methods treat interannual variability differently, and an analysis in hindcast mode suggests they are relatively reliable. Unsurprisingly, longer durations imply smaller
P
cool
values; in the case of annual temperatures, the interdecile range of
P
cool
values across Canada is, for example, ~2%–18% for 25 yr and ~40%–46% for 5 yr. Results vary slightly with the scenario design method, with similar geographical patterns emerging. With regards to seasonal influence, spring and winter are generally associated with higher
P
cool
values. Geographical
P
cool
patterns and their seasonality are explained in terms of the interannual variability over background trend ratio. This study emphasizes the importance of natural variability superimposed on anthropogenically forced long-term trends and the fact that regional and local short-term cooling trends are to be expected with nonnegligible probabilities.
Publication
Journal of Climate
Volume
28
Numéro
8
Pages
3232-3249
Date
2015-04-15
ISSN
0894-8755, 1520-0442
Consulté le
05/11/2024 21:36
Catalogue de bibl.
DOI.org (Crossref)
Référence
Grenier, P., De Elía, R., & Chaumont, D. (2015). Chances of Short-Term Cooling Estimated from a Selection of CMIP5-Based Climate Scenarios during 2006–35 over Canada. Journal of Climate, 28(8), 3232–3249. https://doi.org/10.1175/JCLI-D-14-00224.1
Auteur·e·s
Lien vers cette notice