Greenhouse Effect and Atmospheric Chemistry
Greenhouse Effect and Atmospheric Chemistry
Greenhouse Effect and Atmospheric Chemistry
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Considering a change in albedo <br />
<strong>and</strong> an atmospheric absorption <br />
T e<br />
T<br />
s<br />
<br />
<br />
4<br />
4<br />
<br />
1<br />
<br />
<br />
F<br />
<br />
<br />
<br />
4 <br />
0<br />
<br />
<br />
<br />
<br />
<br />
1<br />
<br />
F0<br />
<br />
2 T<br />
4<br />
e<br />
<br />
2 <br />
<br />
Earth’s surface temperature depends on<br />
the albedo . Increasing the albedo<br />
(reflection of incoming radiation) reduces<br />
the emission temperature T e <strong>and</strong> therefore<br />
also the temperature T s of the earth<br />
surface. Enhanced cloud coverage would<br />
cause a temperature reduction.<br />
T<br />
T<br />
2 <br />
of the emitted radiation is absorbed by the<br />
<br />
<br />
2 <br />
atmosphere (full absorption =1) reduces<br />
s<br />
4 T e<br />
a<br />
<br />
4<br />
1 1<br />
T<br />
4<br />
<br />
e<br />
2 <br />
<br />
2<br />
T<br />
No absorption: 0 ≤ ≤ 1 full absorption<br />
s<br />
A leaky greenhouse where only a fraction <br />
the greenhouse effect <strong>and</strong> lowers the<br />
surface temperature T s (This corresponds to<br />
a reduction of greenhouse gases) <strong>and</strong> also<br />
the atmospheric temperature T a .
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