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Nouvelles perspectives en développement régional : essais en l'honneur de Donald J. Savoie sous la direction de Sébastien Breau avec la collaboration de Richard Saillant,
Presses de l'université du Québec,
Québec,
2014, 351 pages, 35.00 $ (ISBN 978‐2760541139)
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Clermont Dugas 《The Canadian geographer》2015,59(3):e84-e85
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GUILLAUME FORTIN 《The Canadian geographer》2010,54(2):196-208
Freeze‐thaw cycles are most common at the beginning or near the end of the winter season. These cycles have various effects on the ecosystems of Eastern Canada, affecting both biotic and abiotic components of temperate cold environments. Using air temperature minima and maxima from four meteorological stations close to Québec City, we determined the frequency of daily freeze‐thaw cycles for the last 30 years. The results show no significant increase in the number of freeze‐thaw cycles despite a small increase in air temperature. Polynomial curves describing the relationship between mean air temperatures and the number of freeze‐thaw cycles were calculated. Based on these equations and anticipating a climate change scenario, we projected future freeze‐thaw cycles. Assuming a 5 °C increase in mean air temperatures by 2100, we estimated that the number of days with a freeze‐thaw cycle could increase by approximately 20 days per winter. The increase in the number of such cycles will be concentrated during the coldest months of the winter (January and February). 相似文献
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Hugh Clout 《Journal of Historical Geography》2007,33(4):912-913
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