climate, drought, and change
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Climate, Drought, and Change. SWWG 2014. California Climate Tracker. California Climate Tracker – Precipitation Rankings. California Climate Tracker – Temperature Rankings. 12/27/2013. 1/29/2014. Climate Change Impacts. Less Precipitation Falling as Snow Drier Springs - PowerPoint PPT PresentationTRANSCRIPT
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Climate, Drought, and Change
SWWG 2014
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California Climate Tracker
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California Climate Tracker – Precipitation Rankings
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California Climate Tracker – Temperature Rankings
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12/27/2013
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1/29/2014
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Climate Change Impacts• Less Precipitation Falling as Snow• Drier Springs• Increased Variability
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Future Drought Characteristics
• Decrease in Spring Precipitation decreases odds of “March Miracles”
• Dry springs and smaller snowpacks will yield lower base flow values earlier in year
• Ability to manage water increasingly constrained by hydrologic conditions and regulatory decisions
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Multi-Year Sequencing
• 20th Century shows 2, 3, 4, and 6 Yr droughts
• 20-year dry period 1921-1940 in observed record for 8 Station Index & Sacramento Basin Runoff
• Paleorecord shows multiple 10+ year droughts as well as 2 century-long dry periods (climate shifts)
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Climate Change Issues
• Monitoring– Tracking change at the rain/snow interface– High Elevation Monitoring– Variables Monitored
• Vulnerability and Adaptation– Thresholds Demanding Changed Management– Adaptive Management in a Changing Climate
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CoCoRaHS – Citizen Science Support
www.cocorahs.org