Editorial Atmospheric Boundary-Layer Processes and Atmospheric ...
Atmospheric Basics€¦ · Atmospheric Basics. WZPP ees 11.1 2 Atmospheric Composition! Air is a...
Transcript of Atmospheric Basics€¦ · Atmospheric Basics. WZPP ees 11.1 2 Atmospheric Composition! Air is a...
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Atmospheric Basics
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WZPP ees 11.1 2
Atmospheric Composition Air is a combination of many gases
The atmosphere extends from the Earth’s surface to outer space
About 99% of the atmosphere is made of nitrogen and oxygen,
With small amounts of other gases
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WZPP ees 11.1 3
Key Atmospheric Gases The amount of water vapor can vary from zero
to as much as 4% of the atmosphere.
The percent varies with the
Seasons
Altitude of a particular air mass
Surface features under the air
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WZPP ees 11.1 4
Key Atmospheric Gasesl Carbon dioxide and water vapor
l Regulates the amount of energy the atmosphere absorbs
l When water changes from one state to another (solid D liquid D gas)
l Heat is either absorbed or released
l Which affects atmospheric motions
§ Weather patterns
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WZPP ees 11.1 5
Particulates Solids in the atmosphere
Dust & salt
Used in cloud formation
Ice & snow
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WZPP ees 11.1 6
Structure of the Atmospherel Is made of different layers
l Layers differ in
l composition
l temperature
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WZPP ees 11.1 7
Solar Fundamentalsl The sun is the source of all energy in the
atmosphere
l Is transferred to Earth by
l Radiation
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WZPP ees 11.1 8
Tropospherel Is the layer closest to Earth
l the most mass of the atmosphere
l Weather occurs here
l The most pollution
l There is a general decrease in temperature from the bottom to the top
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WZPP ees 11.1 9
Stratospherel Is a layer of concentrated ozone
l Ozone absorbs more ultraviolet radiation than air
l The stratosphere increases in temperature
l From -60 ºC to about 0 ºC
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WZPP ees 11.1 10
Mesosphere l Has No concentrated ozone
l The temperature decreases again
l From about 0 ºC to -90 Cº
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WZPP ees 11.1 11
Thermospherel Has only a very small portion of the Earth’s
atmosphere
l The temperature of the air does increase to 1000 ºC
l Molecules are far apart from one another
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WZPP ees 11.1 14
Ionospherel Is part of the thermosphere
l Has electrically charged particles
l Layers of progressively lighter gases
NASA- Aurora borealis
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WZPP ees 11.1 11
Exosphere
l Is the outer most layer of the atmosphere
l Made of lighter gases of helium & hydrogen
l There is no clear boundary between the atmosphere and space
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WZPP ees 11.1
How to remember the order of the layers to the atmosphere
l Troposphere
l Stratosphere
l Mesosphere
l Thermosphere
l Exosphere
l Trackl Smalll Metersl Throughl Earth