Absorption
¥20% of incident Visible (0.4-0.7 mm)
is absorbed
¥O2 an O3 absorb UV (shorter than
0.3 mm)
¥Infrared
(5-20 mm)
is selectively absorbed
¥H2O
& CO2 are strong absorbers
and emitters of IR
¥Little absorption of IR around 10
mm
– atmospheric
window
¥
Ahrens,
Fig. 2.9
