CGRG Bibliography of Canadian Geomorphology
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Author : Gagnon, A.; and Gough, W.A.
Date : 2002.
Title : Observed and projected climate change in the Hudson Bay region, Canada
Publication : Annual Meeting of the Canadian Association of Geographers. Toronto, Ontario. May 27-28, 2002.
Issue :
Page(s) :
Abstract
This paper examines climatic (temperature and precipitation) and streamflow trends in the Hudson Bay region during the 20th century. Most weather stations have experienced a warming trend in winter, summer, and spring, whereas cooling trends were detected West and South of Hudson Bay in the autumn. Over the same time period, precipitation has increased during all seasons. The Mann-Kendall test reveals a statistically significant trend towards an earlier occurrence of the spring freshet South of Hudson Bay, a region with a significant warming trend in spring. Northwest of Hudson Bay, streamflow has significantly increased during all seasons, a trend in agreement with the precipitation record. In Manitoba, precipitation has increased from 1920 to 1970 but it has been decreasing since then. The decrease in precipitation during the last three decades and increased evapotranspiration due to warmer temperatures explain the decrease in river discharge since 1970 in that region. East of Hudson Bay, no temporally nor spatially coherent patterns were identified. In addition, the outputs of six coupled general circulation models that include the cooling effect of sulphate aerosols are presented. The projected climate change under a 2ĄCO2 scenario in the Hudson Bay region is compared with the observed changes of the past century.
Bibliography of Canadian Geomorphology