Modelling Streamflow in Present and Future Climates: Examples from the Georgia Basin, British Columbia
- 1 January 2002
- journal article
- Published by Taylor & Francis in Canadian Water Resources Journal / Revue canadienne des ressources hydriques
- Vol. 27 (4) , 427-456
- https://doi.org/10.4296/cwrj2704427
Abstract
The Georgia Basin is one of the most hydrologically complex areas of Canada. The form in which precipitation occurs in winter, either snow or rain, is the primary determinant of the hydrologic patterns of rivers. The region consists of mountains, valleys and plains, and has extensive variations in elevation. Variations in temperature and precipitation exert tremendous influence on the amount and form of water that reaches the land surface of the Georgia Basin. The amalgamation of the climatic and geographical factors creates homogenous zones in which distinctly different hydrological processes occur. Climate change could have major regional effects on temperature, precipitation, evapotranspiration and ultimately runoff. In previous work, zones of homogenous hydrologic processes in the Georgia Basin were delineated. In the present work, we used downscaled data from GCMs for future periods as inputs to a hydrologic model. These results are used to forecast the location of these zones in three periods in the... Le bassin de Géorgie correspond à l’une des zones les plus complexes du Canada sur le plan hydrologique. La façon dont les précipitations se produisent en hiver, soit sous forme de neige, soit sous forme de pluie, constitue le principal facteur déterminant des tendances hydrologiques des rivières. La région consiste en des montagnes, des vallées et des plaines et présente des écarts considérables dans les altitudes. Les variations de température et de précipitations exercent une influence énorme sur la forme et la quantité d’eau qui atteint la surface des terres du bassin de Géorgie. La réunion des facteurs climatiques et géographiques donne lieu à des zones homogènes à l’intérieur desquelles des processus hydrologiques distinctement différents se produisent. Le changement climatique pourrait avoir des effets régionaux majeurs sur la température, les précipitations, l’évapotranspiration et à la limite le ruissellement. Dans des travaux antérieurs, on a délimité les zones de processus hydrologiques homogèn...Keywords
This publication has 23 references indexed in Scilit:
- Downscaling recent streamflow conditions in British Columbia, Canada using ensemble neural network modelsJournal of Hydrology, 2002
- Time Structure of Observed, GCM-Simulated, Downscaled, and Stochastically Generated Daily Temperature SeriesJournal of Climate, 2001
- The Canadian Centre for Climate Modelling and Analysis global coupled model and its climateClimate Dynamics, 2000
- Atmospheric model data for macroscale hydrologyJournal of Hydrology, 1999
- Simulating long series of streamflow using data from an atmospheric modelHydrological Sciences Journal, 1998
- The NCEP/NCAR 40-Year Reanalysis ProjectBulletin of the American Meteorological Society, 1996
- Hydrologic effects of climatic change in west-central CanadaJournal of Hydrology, 1994
- Effects of CO2-induoed climatic changes on soowpack and streamflowHydrological Sciences Journal, 1990
- Multifield Analog Prediction of Short-Term Climate Fluctuations Using a Climate State vectorJournal of the Atmospheric Sciences, 1978
- A Method of Bivariate Interpolation and Smooth Surface Fitting for Irregularly Distributed Data PointsACM Transactions on Mathematical Software, 1978