On the characteristics of the water cycle of the Mackenzie River Basin

This study is concerned with the water cycle of the Mackenzie River Basin o f northwestern Canada. The analysis of water vapour, clouds, precipitation, snow cover, discharge and temperature shows that the region is subject to substantial interannual variability and strong seasonal cycles. A number of processes unique to cold climate regions, such as the impacts of various p recipitation types, affect the water cycle of the basin. As well, this basi n is experiencing a strong warming trend that is linked with an enhancement of some water variables, and an apparent reduction in atmospheric recyclin g. The Mackenzie Basin also exhibits some overall characteristics which dif fer from other high latitude regions due to its unique geography.