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Welcome to Meteorology 10
Professor Jeff Gawrych
De Anza College
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Meterology Definition
• The science that deals with the phenomena of the atmosphere, especially weather and weather conditions
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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
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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
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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
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385 ppm in 2007
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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.
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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
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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!
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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
•