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A body receiving energy from a source (Albedo (0 < a < 1 (White…
A body receiving energy from a source
Albedo
white
The ratio of power of radiation scattered from the body to the total power incident on the body
0 < a < 1
White surface= 1
Black surface= 0
depends on several factors
latitude
terrain
oceans (low) and snow (high)
season
cloud formation
Emissivity
An object absorbs energy from a source
emits all wavelength of EM waves
0 to 1
0 is a perfect reflector
1 is a perfect emitter
efficiency of bodies emitting energy
P=eσAT^4
The ratio of heat radiated by an object and the energy radiated by a black body at the same temperature
Power emited by object/ Power emitted by a black body
Stefan Boltzman Law
Stefan Boltzmann constant: 5.67X10^-8 Wm-2K-4
a + e = 1
experiences two properties
Latin for
defined as
has a scale of
defined as
as a measure of reflected solar radiation
where
where
has a value of
occurs when
and later
where
as a measure of
power emitted
of a planet
which is
calculated by
given by
where
