# Earth modelling

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What controls the temperature of Earth?
The radiative balance (governed by surface properties and atmospheric composition)
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What is the difference between short wave and long wave radiation?
short wave = sun, UV, visible; long wave = earth, infrared
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What is the solar constant (S0)?
the solar output at Earth's distance from sun.
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What is the equation for average ISWR (Sbar)?
Sbar = S(0) / 4 = 342 Wm(-2)
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What value balances the amount of incoming short-wave radiation (ISWR)?
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How do you model ISWR?
model the land/sea surface and its interactions with the rest of the universe under a constant temperature
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Why can OLWR be observed by simple models?
It forms a linear correlation with temperature and is not dependent on spacial distribution of heat
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How does temperature affect OLWR?
OLWR increases at higher surface temperatures (higher nearer equator)
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How is OLWR calculated?
The Stefan-Bolzmann law
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What percentage of OLWR is transmitted to space?
approx. 60%
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Define "effective temperature" (Teff)
the temperature of the Earth in the absense of an atmosphere
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What is the natural greenhouse effect?
The natural temperature of the earth with it atmospher (approx 33 C)
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## Other cards in this set

### Card 2

#### Front

What is the difference between short wave and long wave radiation?

#### Back

short wave = sun, UV, visible; long wave = earth, infrared

### Card 3

#### Front

What is the solar constant (S0)?

### Card 4

#### Front

What is the equation for average ISWR (Sbar)?

### Card 5

#### Front

What value balances the amount of incoming short-wave radiation (ISWR)?