1. REGIONAL CLIMATE: PAST AND PRESENT REGIONAL CLIMATE: PAST AND PRESENT

2. Climate vs. Weather Climate: Climate: Long term average conditionsWeather: The conditions day to day

3. Climate vs. Weather Climate:Weather:

4. Weather Forecasting What will the weather be on a specific day in a specific place Short term (7-10 days) Future Climate Simulations What will the climate trends be in a region in the future Long term (50-100 years) Climate vs. Weather

5. Water Year Hydrologic Water Year California: October 1 – September 30

8. Orographic Precipitation

13. Bucks Lake 50 Year Mean Annual Precipitation 1951-2000 Lake Almanor Eagle Lake 93” per Year 7” per Year 33” per Year 16” per Year 50 Miles 50 Miles!

14. http://www.wrcc.dri.edu/monitor/cal-mon/

23. Recent Observations Warming Trend Less Snowpack Less snow/more rain; changing snow thresholds Earlier greenup dates; more tree mortalities; enhanced wildfires Animals moving north Earlier snowfed streamflow Mike Dettinger, USGS and SIO/UCSD

24. Recent Local Groundwater Elevation Observations http://www.water.ca.gov/waterdatalibrary/index.cfm

25. Recent Local Groundwater Elevation Observations

26. Example of Groundwater Overdraft (Well in Sacramento Valley)

27. Recent Local Groundwater Elevation Observations

28. El Nino? NCEP Coupled Forecast System (CFS) Model Version 2

29. El Nino? Mike Dettinger, USGS/SIO

30. Collecting and Understanding Data to Adapt