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IES Exam 1 Lecture 3

Atmosphere Fundamentals

TermDefinition
What Good is Atmosphere? Filters incoming and outgoing EMR
Atmosphere Shield From damaging high energy EMR
Shorter wavelengths penetrate Less deeply in atmosphere
Waste Repository Atmosphere is place for all CO2 exhaled and it is mixed around and absorbed by plants
Atmosphere Amount 99.9% is w/in 50 km of surface
Atmosphere Heating Heated at the bottom and in middle UNSTABLE
Ideal Gas Law PV=nRT As temp rises, pressure does too
Pressure and Density Decrease exponentially w/height
Surface Air Pressure 1013.2 millibars (mb)
Stratosphere Temperatures Warmer as height increases STABLE
Troposphere Temperatures Colder as height increases UNSTABLE
Ozone and Stratosphere High concentration, so stops UV light Warms atmosphere
Tropospheric Lapse Rate 6.4 degrees C/km
Atmospheric Stability Stable when dense air is below less dense air
Major Atmospheric Components N, O, Ar Make up 99.9% of atmosphere
Nitrogen 78%
Oxygen 21%
Argon 0.9%
Trace Gases Water Vapor (0-4%), CO2 (419 ppm), Methane (1.92 ppm), Ozone (0.6ppm)
Greenhouse Gases are... Trace gases
Aerosols Affect passage of sunlight through atmosphere
Aerosol Examples Sea salt, mineral dust, volcanoes, fires, air pollution
Zone Layer Shields us from radiation
Ozone Destruction Catalyzed by chemical reactions with chlorine Chlorine released by breakdown in CFCs
Ozone in Troposphere Pollutant
Created by: Eliana.s
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