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- Title
Water Storage, Net Precipitation, and Evapotranspiration in the Mackenzie River Basin from October 2002 to September 2009 Inferred from GRACE Satellite Gravity Data.
- Authors
Morrow, E.; Mitrovica, J. X.; Fotopoulos, G.
- Abstract
Gravity Recovery and Climate Experiment (GRACE) satellite gravity data are used to determine the variability of terrestrial water storage within the Mackenzie River basin from October 2002 to September 2009. During that period, it is estimated that there is no significant (7 yr) linear trend in the water storage after having accounted for postglacial rebound using the ICE-5G (VM2) ice sheet and Earth viscosity model. Errors in this model may alter this conclusion. The GRACE gravity data are also combined with precipitation and river discharge datasets to estimate trends in net precipitation and evapotranspiration in the basin. Net precipitation is seen to have a significant trend with a corresponding increase in river discharge. Evapotranspiration was found to be constant over the study period.
- Subjects
MACKENZIE River (N.W.T.); NORTHWEST Territories; WATER storage; METEOROLOGICAL precipitation; EVAPOTRANSPIRATION; GRAVITY; VISCOSITY; ICE sheets
- Publication
Journal of Hydrometeorology, 2011, Vol 12, Issue 3, p467
- ISSN
1525-755X
- Publication type
Article
- DOI
10.1175/2010JHM1278.1