By Ming-ko Woo, Ming-ko Woo
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Additional resources for Cold Region Atmospheric and Hydrologic Studies
Through the use of satellite data, clear sky products (land surface temperature, evapotranspiration, water temperature time series over lakes of size ≥100 km2) and cloud top temperatures were generated to provide information for the analysis of the water and energy budgets. The satellite database was augmented with 200204 Moderate Resolution Imaging Spectroradiometer (MODIS) land surface temperature data. This chapter summarizes results of MAGS studies based on these satellite products, and documents improved methods to compare the satellite-derived products with ground observations from research sites and with regional climate model outputs of low spatial resolution.
Rivers from the lowlands and southern latitudes have earlier snowmelt peaks than those from the western mountains or located further north. Figures 8 and 9 show the average monthly flow contributions of the major tributaries, and the mean monthly runoff (in mm) of the Mackenzie River at Arctic Red River. Storage, especially in the great lakes, delays the Mackenzie River flow relative to the tributary discharges. Rivers originating in the Western Cordillera (Athabasca, Peace, Liard and other mountain rivers) provide 60% of the Mackenzie runoff.
In terms of hydrologic contributions, MAGS can claim achievements in the discovery of new processes or improved quantification of hydrologic functions, conceptualization and model development, and application of knowledge for scientific and practical purposes. MAGS research has led to the revision of conventional interpretation of several hydrologic phenomena. Examples include the important role of sublimation in winter snow loss, the response of lake evaporation to synoptic-scale rather than diurnal energy fluxes, the highly variable and some- MAGS Hydrologic Process Research 33 times pervious nature of bedrock surfaces that allows infiltration, and the extreme contrasts between north and south slopes in terms of runoff production in a subarctic mountainous catchment.
Cold Region Atmospheric and Hydrologic Studies by Ming-ko Woo, Ming-ko Woo