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UV RADIATION LEVELS ARE
INFLUENCED BY:
SUN ELEVATION:
The higher the sun in the
sky, the higher the UV radiation level.
LATITUDE:
The closer to equatorial
regions, the higher the UV radiation levels.
CLOUD COVER:
UV radiation levels are
highest under cloudless skies but even with cloud cover, UV radiation
levels can be high.
ALTITUDE:
At higher altitudes, a
thinner atmosphere absorbs less UV radiation.
OZONE: Ozone absorbs some of the
UV radiation that would otherwise reach the Earth’s surface.
GROUND REFLECTION:
UV radiation is reflected
or scattered to varying extents by different surfaces.
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