Implications of future climate on water availability in the western Canadian river basins

International Journal of Climatology - Tập 37 Số 7 - Trang 3247-3263 - 2017
Yonas Dibike1, Terry D. Prowse1, Barrie Bonsal2, H. C. L. O'Neil1
1Environment and Climate Change Canada, Watershed Hydrology and Ecology Research Division, Water and Climate Impacts Research Centre (W-CIRC), Victoria, BC, Canada
2Environment and Climate Change Canada, Watershed Hydrology and Ecology Research Division, National Hydrologic Research Centre (NHRC), Saskatoon, SK, Canada

Tóm tắt

ABSTRACT

Precipitation, temperature, and evaporative demand are the most dominant factors affecting water availability in a region. This study examines projected changes in these hydro‐climatic variables over western Canada under two greenhouse gas emissions scenarios using statistically downscaled, high resolution climate data generated by six Global Climate Models (GCMs) from the latest Coupled Model Intercomparison Project (CMIP5). Potential changes in the spatial and seasonal distributions of water availability over nine major western Canadian river basins are examined by computing the 3‐ and 12‐month standardized precipitation and evapotranspiration indices (SPEI‐3 and SPEI‐12). While individual GCM projections vary on the rate and seasonality of changes, they all indicate similar spatial and temporal patterns. The highest projected increases in precipitation and temperature are primarily in the northern basins, with some decreases in summer precipitation in the southern basins. The evolution of the SPEI‐12 values for the southern basins such as Columbia, Saskatchewan, Fraser and Athabasca indicate a gradual increase in the magnitude and duration of water deficit, while the reverse was found for most of the northern basins such as Peel/Lower Mackenzie, Liard, and Northern Pacific that show a gradual increase in water surplus on an annual basis. The SPEI‐3, however, shows that almost all river basins in western Canada, with the exception of Peel/Lower Mackenzie that are located in the extreme north of the study region, are projected to experience decreasing water availability in summer. In general, the study highlights the potential changes in the spatial and seasonal distribution of western Canadian water resources and sets the stage for a more detailed and process based hydro‐climate modelling study to be conducted in the region.

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Tài liệu tham khảo

10.1016/0022-1694(88)90015-7

10.1029/2010GL046270

10.1038/nature04141

BarrowEM.2011. Preliminary probabilistic analyses of drought indices for the prairies. A Report prepared for the Prairie Adaptation Research Collaborative. Regina SK Canada 15 pp.

Bates BC, 2008, Technical paper of the Intergovernmental Panel on Climate change, 210

10.2166/nh.2014.032

10.1002/joc.3887

BonsalBR RegierM.2006. The 2001 and 2002 Canadian drought: historical context and potential future occurrence. Environment Canada Water Science and Technology Directorate Internal Report No. AE1‐TN‐06‐002. Saskatoon Canada 58 pp.

Bonsal BR, 2011, Drought research in Canada: a review, Atmos.–Ocean, 49, 303, 10.1080/07055900.2011.555103

10.1007/s00382-012-1422-0

10.1175/JCLI-D-14-00636.1

10.1007/s00704-008-0020-x

Environment Canada.2004. Threats to water availability in Canada. NWRI Scientific Assessment Report Series No. 3 and ACSD Science Assessment Series No. 1. National Water Research Institute Environment Canada Burlington Ontario Canada.

10.1175/JCLI-D-14-00174.1

10.1175/2011JCLI4083.1

10.1029/1999GL011016

10.1175/JCLI-D-12-00421.1

10.1111/j.1752-1688.1998.tb05964.x

10.1175/2013EI000554.1

HengeveldH WhitewoodR FergusonA.2005. An introduction to climate change: a Canadian perspective. Environment Canada Rep. Toronto Canada. ISBN: 0–662–41247–8. 55 p.

10.1175/JAM2295.1

10.22499/2.6301.001

LintonH ProwseT DibikeY BonsalB.2013. Spatiotemporal trends in climatic variables affecting streamflow across western Canada from 1950–2010: a CROCWR component. InProceedings from the 19th Northern Research Basins Symposium and Workshop Stuefer SL Bolton WR (eds). University of Alaska Fairbanks: Fairbanks AK 137–148.

10.3354/cr01221

10.1175/JCLI-D-13-00273.1

10.22499/2.6301.007

10.5194/hess-12-551-2008

10.1002/joc.1444

McKeeTB DoeskenNJ KleistJ.1993. The relationship of drought frequency and duration to time scales. InProceedings of the 8th Conference on Applied Climatology American Meteorological Society Boston MA 179–184.

10.1175/2011BAMS3132.1

10.1080/07055900.2011.583910

10.1126/science.1151915

10.1002/ece3.1008

MonteithJL.1965. Evaporation and Environment. InThe state and movement of water in living organism. 19th Symposium Society for Experimental Biology Fogg GE (ed). Cambridge University Press: Cambridge UK 205–234.

10.1175/BAMS-86-1-39

10.1002/hyp.10233

10.1002/hyp.10235

PalmerWC.1965. Meteorological drought. Office of Climatology Research Paper 45 Weather Bureau: Washington D.C. 58 pp.

10.1890/060148

10.1002/hyp.187

10.1175/2010JCLI3729.1

10.1098/rspa.1948.0037

10.1579/0044-7447-38.5.272

ProwseTD BonsalBR BurnDH DibikeYB EdwardsT AhmedR BawdenAJ LintonHC NewtonBW WalkerGS.2013. Climatic redistribution of Canada's western water resources CROCWR. InProceedings from the 19th Northern Research Basins Symposium and Workshop Stuefer SL Bolton WR (eds). University of Alaska Fairbanks: Fairbanks AK 246 pp.

10.1016/j.jhydrol.2004.09.010

10.1016/j.jhydrol.2007.11.012

10.1175/JCLI-D-12-00592.1

Stewart R, 2011, A Drought Research Initiative for the Canadian Prairies

SyedTH FamigliettiJS RodellM ChenJ WilsonCR.2008. Analysis of terrestrial water storage changes from GRACE and GLDAS.Water Resour.Res.44: W02433.

10.1175/BAMS-D-11-00094.1

10.2307/210739

VanhouckeM ComerN KlaassenJ FernandezS.2006. Atmospheric water availability: methodologies and recommendations. National Agri‐Environmental Standards Initiative (NAESI) Technical Report Series. Report No. 2‐57. edited by Environment Canada Gatineau Quebec Cananda. 1210 pp.

10.1175/2009JCLI2909.1

10.1029/2012JD017859

10.1007/s00382-011-1259-y

10.1134/S000143381004002X

10.1007/s10584-011-0148-z

10.5194/hess-20-1483-2016

10.1029/98WR02577

Woo MK, 2008, Cold Region Atmospheric and Hydrologic Studies, 1

10.1080/07055900.2000.9649654

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International Journal of Climatology

Tập 37 Số 7

3247-3263

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