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Download Impacts of Climate Change on Water Resources in Idaho
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Impacts of Climate Change on Water Resources in Idaho Prepared by Zion Klos PhD Student, College of Natural Resources [email protected] 920-883-8617 …feel free to e-mail or call me with questions! Idaho’s climate is changing… NCDC Outline • Observed (historic) and/or future predictions for changes in: – Precipitation – Snowpack – Streamflow – Stream temperature – Drought Observed Precipitation Changes NCDC Precipitation Intensity Analysis by Troy Magney Precipitation: Future Predictions Precipitation: 2090 - 2099 vs. 1990 - 1999 Salathé Jr, E P, R Steed, C F Mass, and P H Zahn. "A High-Resolution Climate Model for the US Pacific Northwest: Mesoscale Feedbacks and Local Responses to Climate Change." Journal of Climate 21, no. 21 (2008): doi:10.1175/2008JCLI2090.1. Outline • Observed (historic) and/or future predictions for changes in: – Precipitation – Snowpack – Streamflow – Stream temperature – Drought Observed Snowpack Changes NCDC April 1st Snowpack 1950-1997 = decrease = increase Mote et al., 2005. Declining mountain snowpack in western N. America. Bull. Am. Met. Soc. Benton Spring Snow Course elev. 1500 m (4920 ft) Analysis by Ryan Niemeyer Future Predictions for Snow vs. Rain Future Predictions for Snow vs. Rain Outline • Observed (historic) and/or future predictions for changes in: – Precipitation – Snowpack – Streamflow – Stream temperature – Drought Statewide Streamflow Trends Unregulated streams with at least 40 years of continuous stream discharge information - 25 stations (as of FY06) Source of Funding State/Federal COOP – 9 Corp of Engineers – 6 USGS NSIP – 4 Other Funding – 6 Discontinued in FY05 – 1 Courtesy of Greg Clark (USGS) Statewide Streamflow Trends USGS Onset of Streamflow Stewart, I T, D R Cayan, and M D Dettinger. "Changes Toward Earlier Streamflow Timing Across Western North America." Journal of Climate 18, no. 8 (2005): 1136-1155. Midpoint of Annual Streamflow Runoff Earlier by 0-4 days (18 sites) Earlier by 5-9 days (6 sites) Earlier by 10 days or more (2 sites) Based on average pre- and post-1980 data Courtesy of Greg Clark (USGS) Outline • Observed (historic) and/or future predictions for changes in: – Precipitation – Snowpack – Streamflow – Stream temperature – Drought Stream Temperature Analysis by Stephen Gillis Outline • Observed (historic) and/or future predictions for changes in: – Precipitation – Snowpack – Streamflow – Stream temperature – Drought Drought: conceptualized through the Climatic Water Balance Anyways, hope you’ll find this information useful! Also, apologies if it’s too much doom and gloom… But hey, who doesn't love some nice, warm weather!