1. Welcome to Meteorology 10 Professor Jeff Gawrych De Anza College

3. Meterology Definition The science that deals with the phenomena of the atmosphere, especially weather and weather conditions

5. Part of the Geosciences Meteorology - Atmospheric science - Atmospheric chemistry/physics - Climatology/Paleoclimatology - Biometeorology Oceanography study of the ocean and its phenomena Similar in many ways to meteorology Geology Studies origin, history, and structure of the earth. Geography/ Environmental Science - A large factor in many area of meteorology. E.g. Land use

7. What is Weather/Climate? Weather: The atmospheric conditions at a particular place and time –E.g. It’s currently 80º with a relative humidity of 40% –Today’s high temeprature was 50º Climate: The time-averaged conditions at a particular location –San Francisco is prone to summertime fog –It hardly ever rains in San Jose during the summertime –The average high temeprature in January is 52.9º

9. Part of a bigger system Atmosphere: this course Hydrosphere: Oceans/lakes/rivers Cryosphere: Ice caps Lithosphere: Solid ground/rock Biosphere: All living things including plants and animals –ALL OF THESE ARE CO-DEPENDENT ON ONE ANOTHER

11. 385 ppm in 2007

20. Concept of a Balance The weather serves to keep earth in a heat balance. Pure and simple. Without it, the poles would be much colder and the tropics much warmer Maintains earth’s heat balance along with the oceans Earth tries to achieve balance, but never fully does. This is VERY GOOD for me as a meteorologist.

22. Who cares? –We must always be able to answer this question. Why we care about the atmosphere? –we live with it and it sustains life »not all planets have atmosphere meaning: »there’s no life (air to breathe) »temperatures are usually too hot or too cold –Affects our day-to day activites »What to wear. Stay in or go out. –Affects business »Flight delays/crop forecasts/weather shutdowns

23. What do meteorologists do? Study the sun and its phenomena: physicists Study climate history of earth Use math in numerical models to aid research and practical tools, like forecast models Work in the solar and wind energy fields Air pollution--A big issue everywhere now. Study planetary atmospheres, like Mars Forecasting (air, sea, business, land use, building design) Teach, por supuesto!

25. Course Outline Our study of the atmopshere will focus on weather forecasting: predicting future weather events We will learn the meteorlogical tools to effectively observe,diagnose and predict future weather events