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California Weather

California Weather. Climate vs. Weather. Climate: Long term average conditions Weather: The conditions day to day. Climate vs. Weather. Climate: Weather: . Water Year. Water Year. Hydrologic Water Year California : October 1 – September 30. Precipitation.

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California Weather

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  1. California Weather

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

  3. Climate vs. Weather Climate: Weather:

  4. Water Year

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

  6. Precipitation • Northern Sierra 8 Station Index • Mt. Shasta City • Shasta Dam • Mineral • Brush Creek • Quincy • Sierraville • Pacific House • Blue Canyon

  7. Precipitation • San Joaquin 5-Station Index • Calaveras Big Trees • Hetch Hetchy • Yosemite Headquarters • North Fork • Huntington

  8. PRISM (Parameter-elevation Regressions on Independent Slopes Model)

  9. Same Solar Energy More Heating LessHeating S U N Winter Summer

  10. -60 -60 -50 -50 -40 -40 -30 -30 -20 -20 -10 -10 0 0 +10 +10 +20 +20 Temperature: Pressure: 39,000Feet 200 MB 18,000 Feet 500 MB 10,000 Feet 700 MB 850 MB 5,000 Feet Sea Level 1013 MB Degrees Centigrade Troposphere; lowest layer

  11. Jet Stream

  12. Jet Stream

  13. Winter vs. Summer in California

  14. Winter Jet toward CA Winter: Jet points toward CA COLD From NW, Alaska

  15. Winter Jet toward CA Winter: Jet points toward CA COLD From NW, Alaska

  16. Winter Jet toward CA Winter: Jet points toward CA COLD From NW, Alaska

  17. Winter Jet toward CA WARM:From West or SW “Pineapple Express” (Atmospheric Rivers)

  18. Winter Jet toward CA WARM:From West or SW “Pineapple Express” (Atmospheric Rivers)

  19. Summer Jet Stream DRY Summers: Jet points toward Washington, Canada

  20. Summer Jet Stream DRY Summers: Jet points toward Washington, Canada

  21. Summer Jet Stream DRY Summers: Jet points toward Washington, Canada

  22. Front Boundary between 2 air masses L COLD WARM

  23. Front Boundary between 2 air masses L COLD WARM

  24. Wind • Air in motion • caused High a LowPressure

  25. Wind • Air in motion • caused High a LowPressure • Speed • measured with an anemometer

  26. Wind • Air in motion • caused High a LowPressure • Speed • measured with an anemometer • Direction • described from which it is blowing

  27. Temperature Humidity Pressure Wind Speed Wind Direction Radiosonde ; Weather Balloon National Weather Service Launches twice daily 12 UTC (4 AM PST) and 00 UTC (4 PM PST)

  28. L L H H Weather Map

  29. Demonstration- Explaining AIR PRESSURE!

  30. Surface Low Pressure Cloudy Rainy or Worsening L • cyclonic (counter- clockwise) • convergence

  31. Surface High Pressure Improving or clearing skies H • anticyclonic (clockwise) • divergence

  32. Moisture+Lift = Precipitation

  33. Orographic Precipitation

  34. Orographic Precipitation

  35. Numerical Weather Prediction

  36. Summary • Varying amounts of Sunlight create the jet stream and weather • A few storms per year determine most of State’s water supply

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