Climatic Change

, Volume 87, Issue 3–4, pp 451–469

Impact of climate change on Pacific Northwest hydropower

Article

Abstract

The Pacific Northwest (PNW) hydropower resource, central to the region’s electricity supply, is vulnerable to the impacts of climate change. The Northwest Power and Conservation Council (NWPCC), an interstate compact agency, has conducted long term planning for the PNW electricity supply for its 2005 Power Plan. In formulating its power portfolio recommendation, the NWPCC explored uncertainty in variables that affect the availability and cost of electricity over the next 20 years. The NWPCC conducted an initial assessment of potential impacts of climate change on the hydropower system, but these results are not incorporated in the risk model upon which the 2005 Plan recommendations are based. To assist in bringing climate information into the planning process, we present an assessment of uncertainty in future PNW hydropower generation potential based on a comprehensive set of climate models and greenhouse gas emissions pathways. We find that the prognosis for PNW hydropower supply under climate change is worse than anticipated by the NWPCC’s assessment. Differences between the predictions of individual climate models are found to contribute more to overall uncertainty than do divergent emissions pathways. Uncertainty in predictions of precipitation change appears to be more important with respect to impact on PNW hydropower than uncertainty in predictions of temperature change. We also find that a simple regression model captures nearly all of the response of a sequence of complex numerical models to large scale changes in climate. This result offers the possibility of streamlining both top-down impact assessment and bottom-up adaptation planning for PNW water and energy resources.

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References

  1. Bonneville Power Administration, US Bureau of Reclamation, US Army Corp of Engineers (2001) The Columbia river system inside story, 2nd edn. US Army Corp of Engineers, Washington, DCGoogle Scholar
  2. Callahan B, Miles E, Fluharty D (1999) Policy implications of climate forecasts for water resources management in the pacific northwest. Policy Sci 32:269–293CrossRefGoogle Scholar
  3. Cohen SJ, Miller K, Hamlet AF, Avis W (2000) Climate change and resource management in the Columbia River Basin. Water Int 25(2):253–272CrossRefGoogle Scholar
  4. Cullen AC, Frey HC (1999) Probabilistic techniques in exposure assessment. Plenum Press, New YorkGoogle Scholar
  5. Dessai S, Hulme M (2004) Does climate adaptation need probabilities? Climate Policy 4:107–128CrossRefGoogle Scholar
  6. Dessai S, Lu X, Risbey JS (2005) On the role of climate scenarios for adaptation planning. Glob Environ Change 15:87–97CrossRefGoogle Scholar
  7. Giorgi F, Mearns LO (2002) Calculation of average, uncertainty range and reliability of regional climate changes from AOGCM simulations via the “reliability ensemble averaging” (REA) method. J Climate 15:1141–1158CrossRefGoogle Scholar
  8. Giorgi F, Mearns LO (2003) Probability of regional climate change calculated using the reliability ensemble average (REA) method. Geophys Res Lett 30:311–314CrossRefGoogle Scholar
  9. Hamlet AF, Lettenmaier DP (1999) Effects of climate change on hydrology and water resources in the Columbia River Basin. J Am Water Resour Assoc 35(6):1597–1623CrossRefGoogle Scholar
  10. Hamlet AF, Huppert D, Lettenmaier DP (2002) Economic value of long-lead streamflow forecasts for Columbia River hydropower. J Water Resour Plan Manage 128(2):91–101CrossRefGoogle Scholar
  11. Hamlet AF, Snover A, Lettenmaier D (2003) Climate change scenarios for Pacific Northwest water planning studies: motivation, methodologies, and a user’s guide to applications. http://cses.washington.edu/cig/fpt/ccstreamflowtool/sftmethods.shtml
  12. Intergovernmental Panel on Climate Change (IPCC) (2000) Special report: emissions scenarios (SRES). In: Nakicenovic N, et al (eds) A special report of working group III of the IPCC. Cambridge University Press, CambridgeGoogle Scholar
  13. IPCC (2001) Climate change 2001: the scientific basis, contribution of working group I to the third assessment report of the IPCC. In: Houghton JT, Ding Y, Griggs DJ, Noguer M, van der Linden PJ, Xiaosu D (eds). Cambridge University Press, CambridgeGoogle Scholar
  14. IPCC Task Group on Scenarios for Climate Impacts Assessment (IPCC-TGCIA) (1999) Guidelines on the use of scenario data for climate impact and adaptation assessment. IPCC, GenevaGoogle Scholar
  15. Jones RN (2000a) Managing uncertainty in climate change projections—issues for impact assessment. Clim Change 45:403–419CrossRefGoogle Scholar
  16. Jones RN (2000b) Analysing the risk of climate change using an irrigation demand model. Clim Res 14:89–100CrossRefGoogle Scholar
  17. Jones RN (2001) An environmental risk assessment/management framework for climate change impact assessments. Nat Hazards 23:197–230CrossRefGoogle Scholar
  18. Lettenmaier DP (2004) The role of climate in water resources planning and management. In: Lawford R, et al (eds) Water: science, policy, and management. Water resources monograph no. 16. AGU, Washington, DC, pp 247–266Google Scholar
  19. Liang X, Lettenmaier DP, Wood EF, Burges SJ (1994) A simple hydrologically based model of land surface water and energy fluxes for general circulation models. J Geophys Res 99(D7):14415–14428CrossRefGoogle Scholar
  20. Lohmann D, Raschke E, Nijssen B, Lettenmaier DP (1998) Regional scale hydrology: I. Formulation of the VIC-2L model coupled to a routing model. Hydrol Sci J 43:131–141CrossRefGoogle Scholar
  21. Miles EL, Snover AK, Hamlet AF, Callahan B, Fluharty D (2000) Pacific Northwest regional assessment: the impacts of climate variability and climate change on the water resources of the Columbia River Basin. J Am Water Resour Assoc 36(2):399–420CrossRefGoogle Scholar
  22. Morgan MG, Keith DW (1995) Subjective judgments by climate experts. Environ Sci Technol 29:468A–476A (Nordhaus, 1994a)CrossRefGoogle Scholar
  23. Mote PW (2003) Trends in temperature and precipitation in the Pacific Northwest during the twentieth century. Northwest Sci 77(4):271–282Google Scholar
  24. Mote PW, Parson EA, Hamlet AF, Keeton WS, Lettenmaier D, Mantua N, Miles EL, Peterson DW, Peterson DL, Slaughter R, Snover AK (2003) Preparing for climatic change: the water, salmon, and forests of the Pacific Northwest. Clim Change 61:45–88CrossRefGoogle Scholar
  25. Mote PW, Salathé EP, Peacock C (2005) Scenarios of future climate for the Pacific Northwest. A report prepared for King County (Washington) by the Climate Impacts Group (Center for Science in the Earth System, University of Washington, Seattle). http://www.atmos.washington.edu/~salathe/AR4_Climate_Models/
  26. New M, Hulme M (2000) Representing uncertainty in climate change scenarios: a Monte-Carlo approach. Integrated Assessment 1:203–213CrossRefGoogle Scholar
  27. Nijssen B, O’Donnell GM, Hamlet AF, Lettenmaier DP (2001) Hydrologic sensitivity of global rivers to climate change. Clim Change 50:143–145CrossRefGoogle Scholar
  28. Northwest Power and Conservation Council (2003) Genesys northwest power generation system model, version 2.7. http://nwcouncil.org/GENESYS/
  29. Northwest Power and Conservation Council (2005) The fifth northwest electric power and conservation plan. http://nwcouncil.org/energy/powerplan/
  30. Oregon State University (2004) Impacts of climate change on the Pacific Northwest scientific meeting, June 2004, Oregon State University, Corvallis, Oregon. Scientific consensus statement on the likely impacts of climate change on the Pacific Northwest. http://inr.oregonstate.edu/climate-change.html
  31. Payne JT, Wood AW, Hamlet AF, Palmer RN, Lettenmaier DP (2004) Mitigating the effects of climate change on the water resources of the Columbia River Basin. Clim Change 62:233–256CrossRefGoogle Scholar
  32. Prudhomme C, Jakob D, Svensson C (2003) Uncertainty and climate change impact on the flood regime of small UK catchments. J Hydrol 277:1–23CrossRefGoogle Scholar
  33. Resource Innovations (2005) The economic impacts of climate change in Oregon. Institute for Sustainable Environment, University of Oregon. http://ri.uoregon.edu/programs/GWS/climate_change_oregon.html
  34. Shannon CE, Weaver W (1949) The mathematical theory of communication. University of Illinois Press, UrbanaGoogle Scholar
  35. Shlyakhter AI (1994) An improved framework for uncertainty analysis: accounting for unsuspected errors. Risk Anal 14:441–447CrossRefGoogle Scholar
  36. Snover AK, Hamlet AF, Lettenmaier DP (2003) Climate change scenarios for water planning studies: pilot applications in the Pacific Northwest. Bull Am Meteorol Soc 84(11):1513–1518CrossRefGoogle Scholar
  37. Tebaldi C, Mearns LO, Nychka D, Smith RL (2004) Regional probabilities of precipitation change: a Bayesian analysis of multimodel simulations. Geophys Res Lett 31:L24213CrossRefGoogle Scholar
  38. Tebaldi C, Smith R, Nychka D, Mearns LO (2005) Quantifying uncertainty in projections of regional climate change: A Bayesian approach to the analysis of multimodel ensembles. J Climate 18(10):1524CrossRefGoogle Scholar
  39. Tollefson G (1987) BPA and the struggle for power at cost. Bonneville Power Administration, PortlandGoogle Scholar
  40. Washington Economic Steering Committee and the Climate Leadership Initiative (2006) Impacts of climate change on Washington’s economy. Prepared for Department of Ecology and Department of Department of Community, Trade, and Economic Development State of Washington. http://www.ecy.wa.gov/climatechange/economic_impacts.htm
  41. Wilby RL, Charles SP, Zorita E, Timbal B, Whetton P, Mearns LO (2004) Guidelines for use of climate scenarios developed from statistical downscaling methods. http://ipcc-ddc.cptec.inpe.br/ipccddc/html/guidelines/dgm_no2_v1_09_2004.pdf

Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  1. 1.Daniel J. Evans School of Public AffairsUniversity of WashingtonSeattleUSA

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