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The Changing Importance of Winter Rains to Annual Precipitation Totals in Florida.

The Changing Importance of Winter Rains to Annual Precipitation Totals in Florida. Peter Waylen and Youliang Qiu. SANTA FE RIVER near Fort White. (1627 sq.km) High Springs Precipitation. 1949 -1986. 1. Input = Output Precipitation = Runoff +/- Evap.

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The Changing Importance of Winter Rains to Annual Precipitation Totals in Florida.

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  1. The Changing Importance of Winter Rains to Annual Precipitation Totals in Florida. Peter Waylen and Youliang Qiu

  2. SANTA FE RIVER near Fort White. (1627 sq.km) High Springs Precipitation. 1949 -1986 1 Input = Output Precipitation = Runoff +/- Evap. +/- ΔStorage P - R = (E +/- ΔS +/- ΔGw) Seasonal Evapo- Transpiration rates 2 Winter Winter E E E Dry = Cool E declines Summer Dry = Warm E increases

  3. Jacksonville Tallahassee Pensacola Federal Point Appalachicola Ocala St. Leo MONTHLY PRECIPITATION DATA SETS 1/8th° Gridded-data set 1949 -2000 www.hydro.washington.edu/Lettenmaier/Data/ Gridded Maurer, E.P., A.W. Wood, J.C. Adam, D.P. Lettenmaier, and B. Nijssen, 2002, A Long-Term Hydrologically-Based Data Set of Land Surface Fluxes and States for the Conterminous United States. J. Climate 15, 3237-3251. National Climate Data Center 1900 - 2000 Tarpon Springs Bartow Fort Myers Historic Records Gridded Centroid

  4. Mean Summer Precipitation (mm) Northwest 2:1 (mm) Mean Winter Precipitation (mm) South 6:1

  5. Escambia R. Santa Fe R. PERCENTAGE OF MEAN ANNUAL PRECIPITATION OCCURRING IN WINTER. 1949 - 2000 Blackwater Crk. Fisheating Crk.. Selected Streamflow Sites

  6. LINEAR TRENDS INSEASONAL PRECIPITATIONTOTALS Significance 0.10 0.05 0.01

  7. LINEAR TRENDS IN THE PROPORTION OF ANNUAL PRECIPITATION IN THE WINTER Significance 0.10 0.05 0.01

  8. COLD PHASE ENSO NEUTRAL PHASE ENSO WARM PHASE ENSO Proportion of annual precipitation during winter under various ENSO phases. Gridded data

  9. Differences in Proportion of annual precipitation During winter Warm phase - Cold phases. Gridded data

  10. APPALACHICOLA 1900 - 2000

  11. Ocala Bartow Fort Myers St. Leo

  12. Acknowledgements “Partners in Education Program”

  13. Pensacola Tallahassee Tarpon Springs Jacksonville

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