Abstract
Sensitivities to the potential impact of Climate Change on the water resources of the Athabasca River Basin (ARB) and Fraser River Basin (FRB) were investigated. The Special Report on Emissions Scenarios (SRES) of IPCC projected by seven general circulation models (GCM), namely, Japan’s CCSRNIES, Canada’s CGCM2, Australia’s CSIROMk2b, Germany’s ECHAM4, the USA’s GFDLR30, the UK’s HadCM3, and the USA’s NCARPCM, driven under four SRES climate scenarios (A1FI, A2, B1, and B2) over three 30-year time periods (2010–2039, 2040–2069, 2070–2100) were used in these studies. The change fields over these three 30-year time periods are assessed with respect to the 1961–1990, 30-year climate normal and based on the 1961–1990 European Community Mid-Weather Forecast (ECMWF) re-analysis data (ERA-40), which were adjusted with respect to the higher resolution GEM forecast archive of Environment Canada, and used to drive the Modified ISBA (MISBA) of Kerkhoven and Gan (Adv Water Resour 29(6):808–826, 2006). In the ARB, the shortened snowfall season and increased sublimation together lead to a decline in the spring snowpack, and mean annual flows are expected to decline with the runoff coefficient dropping by about 8% per °C rise in temperature. Although the wettest scenarios predict mild increases in annual runoff in the first half of the century, all GCM and emission combinations predict large declines by the end of the twenty-first century with an average change in the annual runoff, mean maximum annual flow and mean minimum annual flow of −21%, −4.4%, and −41%, respectively. The climate scenarios in the FRB present a less clear picture of streamflows in the twenty-first century. All 18 GCM projections suggest mean annual flows in the FRB should change by ±10% with eight projections suggesting increases and 10 projecting decreases in the mean annual flow. This stark contrast with the ARB results is due to the FRB’s much milder climate. Therefore under SRES scenarios, much of the FRB is projected to become warmer than 0°C for most of the calendar year, resulting in a decline in FRB’s characteristic snow fed annual hydrograph response, which also results in a large decline in the average maximum flow rate. Generalized equations relating mean annual runoff, mean annual minimum flows, and mean annual maximum flows to changes in rainfall, snowfall, winter temperature, and summer temperature show that flow rates in both basins are more sensitive to changes in winter than summer temperature.
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References
Alberta Environment (2007) Lower Athabasca management plan. Alberta Environment, Edmonton
Beniston M, Keller F, Koffi B, Goyette S (2003) Estimates of snow accumulation and volume in the Swiss Alps under changing climatic conditions. Theor Appl Climatol 76:125–140
Brekke LD, Miller NL, Bashford KE, Quinn NWT, Dracup JA (2004). Climate change impacts uncertainty for water resources in the San Joaquin River basin, California. J Am Water Resour Assoc 40:149–164
Cubasch U, Cess RD (1990) Processes and modeling. In: Houghton JT, Jenkins GJ, Ephraums JJ (eds) Climate change: the IPCC scientific assessment. Cambridge University Press, Cambridge, pp 69–91
Demuth M, Keller R (2006) An assessment of the mass balance of Peyto Glacier (1966–1995) and its relations to recent and past-century climatic variability, Peyto glacier-one century of science. In: Demuth M, Munro D, Young G (eds) National Hydrology Research Institute, Science report 8, pp 83–132
Dettinger MD, Cayan DR, Meyer MK, Jeton AE (2004) Simulated hydrologic responses to climate variations and change in the Merced, Carson, and American River basins, Sierra Nevada, California, 1900–2099. Clim Change 62:283–317
Duan Q, Gupta VK, Sorooshian S (1992) A shuffled complex evolution approach for effective and efficient optimisation. J Optim Theory Appl 76(3):501–521
Duan Q, Sorooshian S, Gupta VK (1993) Effective and efficient global optimisation for conceptual rainfall-runoff models. Water Resour Res 28(4):1015–1031
Etchevers P, Golaz C, Habets F, Noilhan J (2002) Impact of a climate change on the Rhone river catchment hydrology. J Geophys Res 107(D16):4293. doi:10.1029/2001JD000490
Fulton RJ (1995) Surficial materials of Canada. Geological Survey of Canada, “A” Series Map 1880A, Natural Resources Canada
Gates WL, Henderson-Sellers A, Boer GJ, Folland CK, Kitoh A, McAvaney BJ, Semazzi F, Smith N, Weaver AJ, Zeng Q-C (1996) Climate models—evaluation. In: Houghton JT, Meira Filho LG, Callander BA, Harris N, Kattenberg A, Maskell K (eds) Climate change 1995: the science of climate change. Contribution of working group I to the second assessment report of the intergovernmental panel of climate change. Cambridge University Press, Cambridge, pp 235–284
Golder Associates (2002) Regional surface water hydrology study by re-calibration of HSPF model. Golder Associates Ltd, Calgary
Intergovernmental Panel on Climate Change (2000) Emissions scenarios. A special report of working group II of the intergovernmental panel on climate change. Cambridge University Press, Cambridge
Intergovernmental Panel on Climate Change (2001) Climate change 2001: the scientific basis. Contribution of working group 1 to the third assessment report of the intergovernmental panel on climate change. Cambridge University Press, Cambridge
Intergovernmental Panel on Climate Change (2007) Climate change 2007—the physical science basis. Contribution of working group 1 to the fourth assessment report of the intergovernmental panel on climate change. Cambridge University Press, Cambridge
Kellerhals R, Neill CR, Bray DI (1972) Hydraulic and geomorphic characteristics of rivers in Alberta, Edmonton. Research Council of Alberta, p 383
Kerkhoven E, Gan TY (2006) A modified ISBA surface scheme for modeling the hydrology of Athabasca River basin with GCM-scale data. Adv Water Resour 29(6):808–826
Knowles N, Cayan DR (2004) Elevational dependence of projected hydrologic changes in the San Francisco estuary and watershed. Clim Change 62:319–336
Lettenmaier DP, Gan TY (1990) Hydrologic sensitivities of the Sacramento-San Joaquin River Basin to global warming. Water Resour Res, AGU 26(1):69–86
Luckman BH (2006) The Neoglacial history of Peyto Glacier, Peyto Glacier-One Century of Science. In: Demuth M, Munro D, Young G (eds) National Hydrology Research Institute, Science report 8, pp 25–58
Masson V, Champeaux J-L, Chauvin F, Meriguet C, Lacaze R (2003) A global database of land surface parameters at 1 km resolution in meteorological and climate models. J Climate 16:1261–1282
Maurer E (2007) Uncertainty in hydrologic impacts of climate change in the Sierra Nevada, California, under two emissions scenarios. Clim Change 82:309–325
Middelkoop H, Daamen K, Gellens D, Grabs W, Kwadijk JCJ, Lang H, Parmet B, Schadler B, Schulla J, Wilke K (2001) Impact of climate change on hydrological regimes and water resources management in the Rhine basin. Clim Change 49:105–128
Nelder JA, Mead R (1964) A simplex method for function minimization. Comput J 7:308–313
Noilhan J, Planton S (1989) A simple parameterization of land surface processes for meteorological models. Mon Weather Rev 117:536–549
Stewart IT, Cayan DR, Dettinger MD (2004) Changes in snowmelt runoff timing in western North America under a ‘business as usual’ climate change scenario. Clim Change 62:217–232
Zierl B, Bugmann H (2005) Global change impacts on hydrological processes in Alpine Catchments. Water Resour Res 41:W02028. doi:10.1029/2004WR003447
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Kerkhoven, E., Gan, T.Y. Differences and sensitivities in potential hydrologic impact of climate change to regional-scale Athabasca and Fraser River basins of the leeward and windward sides of the Canadian Rocky Mountains respectively. Climatic Change 106, 583–607 (2011). https://doi.org/10.1007/s10584-010-9958-7
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DOI: https://doi.org/10.1007/s10584-010-9958-7