the earth’s atmosphere chapter 4. chapter 4 study guide 1. describe the composition of the...
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The Earth’s Atmosphere
Chapter 4
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Chapter 4 Study Guide1. Describe the composition of the atmosphere.
2. Explain why there are different layers in the atmosphere. Describe the vertical layering of the atmosphere. Know the names of the different layers from the Earth’s surface up.
3. Distinguish between weather, climate, meteorology and climatology.
4. Describe in depth the controls to weather and climate.5. Describe the energy budget.6. Determine the amount of insolation which reaches the earth's
surface, and how much insolation is absorbed by the ozone, and water vapor in clouds.
7. Compare the wavelengths of radiation emitted by the sun and radiation emitted by the earth.
8. Describe the process of energy transfer by conduction, convection and latent heat of condensation.
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Study Guide Continued
9. Describe the greenhouse effect. 10. Calculate temperature using the formulas for Celsius
and Fahrenheit.11. Describe daily temperature lag and annual
temperature lag.12. Describe albedo. Give examples of things with high
albedo and low albedo.13. Describe in detail the methods of heat transfer.14. Define adiabatic cooling.15. Predict when we will have a temperature inversion in
Southern California.
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Chapter 4
• What is the difference between weather and climate?
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Composition of Atmosphere
• Earth’s atmosphere composed of many gases (Percent of mass)– Nitrogen 78.8 %
– Oxygen 20.95 %
– Argon 0.93 %
– Carbon Dioxide 0.037 %
– Ozone (trace)
– Hydrogen (trace)
– Other inert gases (trace)
Table 4.1
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Vertical Layering of Atmosphere
• Layers based on temperature and rates of temperature change.
• The higher the altitude the thinner the air.
• Where is the troposphere?
Fig. 4.7
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Controls of Weather and Climate
• Latitude
• Land and water distribution
• Ocean currents
• Altitude
• Landform barriers
• Human activities
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Latitude
higher latitude= get lower temperatures
• lower latitude = higher temperatures.
• Why?
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Land and water distribution
• Specific heat
• Water is slow to change its temperature compared to land.
• Temperature difference Seattle,Washington and Minneapolis Minnesota.
• Why?
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Ocean currents
Warm and cold ocean currents affect the temperature of the atmosphere above. Ocean current movements are the Earth’s systems reaching a balance.
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Fig. 5.24
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Altitude and Landform Barriers
Altitude—Within Troposphere—increase in altitude decrease in temperature. Go to mountains what happens?
Landform barriers--mountain ranges Human activities?
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Heat transfer
• Convection currents
• Conduction
• Latent heat of condensation
• Radiation
• Advection
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Convection currents
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Conduction
• Heat transfer by direct contact—hand on stove.
• Caused by collisions of molecules. Heat passes from the warmer to the cooler until they attain the same temperature.
• What are good conductors? Poor conductors?
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Latent heat of condensation
• Latent heat of condensation
• Evaporation
• Condensation
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Radiation
Radiation- Process by which electromagnetic radiation is emitted from an object.
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Advection
• Horizontal heat transfer by winds and ocean currents.
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Greenhouse Effect
Fig. 4.4
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Greenhouse effect
Greenhouse gases like carbon dioxide and water vaporWhat is global warming?
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Adiabatic cooling
• For every 1000 meters of altitude the temperature decreases an average of 6.5ºC/1000 meters. Or in our system 3.6º F / 1000 ft.
• Why?
• environmental lapse rate.
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Fig. 4-20, p. 104
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Energy budget48% reaches earthsurface19% ozone layer
4.10
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Chapter 4
• Heat versus temperature
• Daily temperature lag and annual temperature lags
• Albedo?
• Converting F to ºC.
• Isotherms?
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The Carbon Cycle (Terrestrial)
photosynthesisphotosynthesis aerobic aerobic respirationrespiration
Terrestrialrocks
soil/water
Land food websproducers, consumers,
decomposers, detritivores
Atmosphere(mainly carbon dioxide)
Peat,fossil fuels
combustion of wood combustion of wood (for clearing land; or (for clearing land; or
for fuelfor fuel
sedimentation
volcanic action
death, burial, compaction over death, burial, compaction over geologic timegeologic timeleaching leaching
runoffrunoff
weatheringweathering
Fig. 3-271
Global Warming
Global Warming
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The Carbon Cycle (Aquatic)
diffusion between atmosphere and ocean
Carbon dioxidedissolved in ocean water
Marine food websproducers, consumers,
decomposers, detritivores
Marine sediments, includingformations with fossil fuels
combustion of fossil fuels
incorporation incorporation into sedimentsinto sediments
death, death, sedimentationsedimentation
uplifting over uplifting over geologic timegeologic time
sedimentationsedimentation
photosynthesisphotosynthesis aerobic aerobic respirationrespiration
Fig. 3.27