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Déry & Wood 2005
Déry, S.J. and Wood, E.F. (2005). Decreasing river discharge in northern Canada. Geophysical Research Letters 32: doi: 10.1029/2005GL022845. issn: 0094-8276.

Freshwater discharge to high-latitude oceans in 64 Canadian rivers is investigated. The mean annual discharge rate attains 1252 km3 yr-1 for an area of 5.6 ¿ 106 km2, equating to a sink of 225 mm yr-1 in the surface water budget of northern Canada (excluding the Arctic Archipelago where insufficient data exist). Application of the Mann-Kendall test to the data reveals a 10% decrease (-125 km3 yr-1 or -22 mm yr-1) in the total annual river discharge to the Arctic and North Atlantic Oceans from 1964 to 2003. This trend in river runoff is consistent with a 21 mm yr-1 decline in observed precipitation over northern Canada between 1964 and 2000. We find evidence of statistically-significant links between the Arctic Oscillation, El Ni¿o/Southern Oscillation, and the Pacific Decadal Oscillation to the total annual freshwater discharge in northern Canada's rivers at interannual-to-decadal timescales.

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Abstract

Keywords
Hydrology, Hydroclimatology, Hydrology, Hydrological cycles and budgets (1218, 1655), Hydrology, Streamflow, Atmospheric Processes, Land/atmosphere interactions (1218, 1631, 1843), Atmospheric Processes, Polar meteorology
Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/
Publisher
American Geophysical Union
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