CGRG Bibliography of Canadian Geomorphology
Search Results
Author : Dyke, L.D.
Date : 2001.
Title : Climate of the Mackenzie River valley.
Publication : The Physical Environment of the Mackenzie Valley: a Baseline for the Assessment of Environmental Change, Edited by: L.D. Dyke and G.R. Brooks. Geological Survey of Canada, Bulletin
Issue : 547:
Page(s) : 21-30.
Abstract
The Mackenzie River valley is dominated by cold, dry air moving south from the high arctic in winter but receives a warm if brief summer as the arctic high pressure area retreats northward. Dry conditions are periodically modified by low-pressure cells moving from the Pacific Ocean or Beaufort Sea. Mean monthly temperatures in winter and summer tend to be uniform throughout the Mackenzie valley south of Inuvik. In winter, this is due to the parallelism between the arctic front and the Mackenzie valley as it traverses the region. In summer, longer daylight hours compensate for lower sun angles with increasing latitude to favour even heating. Snow and rainfall are low by North American standards but occasional heavy rains do occur. Throughout the 20th century, mean annual temperatures for most recording stations have on average risen between 1 and 2< degrees >C and snowdepth at the end of February has decreased.
Bibliography of Canadian Geomorphology