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Articles

Twentieth-Century Fluctuations and Trends in Temperature, Precipitation, and Mountain Snowpack in the Georgia Basin-Puget Sound Region

Pages 567-585 | Published online: 23 Jan 2013
 

Abstract

Climate and snow data for the United States and Canada are combined and used in this paper to describe climate trends in the ecologically- and economically-vital land areas of the estuaries of Georgia Basin and Puget Sound. The region’s annually averaged temperature increased 1.5 °C during the 20th century while precipitation was more variable. Consistent with the observed warming, significant declines in mountain snowpack (typically 30% since 1950) have been observed, especially in springtime and at lower elevations.

Des bases de données de climat et de neige pour les États-Unis et le Canada sont combinées et utilisées ici pour décrire les tendances des régions écologiquement et économiquement vitales qui entourent les estuaires intérieurs du Bassin de Géorgie et de Puget Sound dans le Pacifique Nord-Ouest. La température moyenne de la région a augmenté substantiellement au cours du vingtième siècle (1.5 °C), mais la précipitation est plus variable. Conforme au réchauffement observé, un déclin significatif de neige en montagne (typiquement de 30% depuis 1950) a été observé, surtout au printemps et en basse altitude.

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