SOCAP10: Juliet Christian-Smith, Pacific Inst.

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  • Historical, worsening
  • New challenge
  • SOCAP10: Juliet Christian-Smith, Pacific Inst.

    1. 1. Water and Our Food Supply: Crisis and Opportunity Juliet Christian-Smith Pacific Institute Oakland, California SOCAP 2010
    2. 2. CRISIS
    3. 3. Global Warming’s Impact on Water Availability
    4. 4. Source: Lamont-Doherty Tree Ring Laboratory
    5. 5. Challenge: Irrigated agriculture and food supply
    6. 6. Source: California Farm Bureau Source: California Farm Bureau Source: Imperial Valley Press
    7. 7. Source: Proceedings of the National Academy of Sciences 2004
    8. 8. OPPORTUNITY
    9. 9. Technology: Doing more with less Source: photos courtesy of USDA Natural Resources Conservation Service
    10. 10. Management: Improved Irrigation Scheduling
    11. 11. Management: Regulated Deficit Irrigation
    12. 12. Successes: Agricultural Water Use
    13. 13. More Opportunities • Measurement • Required by new state legislation • Mostly minimal at present • Where will it happen: lateral, farm gate? • How will it happen: depends on type of system, pressurized/gravity or open channel? • Remote sensing offers many attractive options • Cheaper (in many cases) • Error checks local water delivery or ET-based data • May be able to detect changes in groundwater
    14. 14. 654 13th Street, Preservation Park, Oakland, California 94612, U.S.A. 510-251-1600 | www.pacinst.org Institute reports are available in electronic form without charge: http://www.pacinst.org/publications/ Contact Information: Juliet Christian-Smith Juliet@pacinst.org 510-251-1600

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