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Climate, Drought, and Change

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

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Climate, Drought, and Change

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  1. Climate, Drought, and Change SWWG 2014

  2. California Climate Tracker

  3. California Climate Tracker – Precipitation Rankings

  4. California Climate Tracker – Temperature Rankings

  5. 12/27/2013

  6. 1/29/2014

  7. Climate Change Impacts • Less Precipitation Falling as Snow • Drier Springs • Increased Variability

  8. 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

  9. 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)

  10. 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

  11. CoCoRaHS – Citizen Science Support www.cocorahs.org

  12. Questions? Email: Michael.L.Anderson@water.ca.gov

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