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THE ARCTIC
The Arctic region…read more

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THE ARCTIC
· The Arctic region lies within the Arctic Circle
· Consists of the ice sheet surrounding the North Pole and the
Northern part of 8 countries: Canada, Greenland, Russia,
USA (Alaska), Iceland, Norway, Sweden and Finland
· It has an incredible cold climate January -35°C and July
-1.5°C
· Increasing temperatures are melting the ice
· Between 2004 and 2005 ­ permanent sea ice decreased by
14%…read more

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THE ARCTIC
Albedo effect
· The amount of solar radiation reflected by the Earth's
surface
· Ice and snow reflect the most because they are light
coloured whereas oceans and dark surfaces absorb more
and reflect less
· Until recently 80% of solar radiation was reflected back
from the polar ice caps
· Global warming is exposing the darker material and ocean
thereby increasing the temperature caused by solar
radiation being absorbed…read more

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THE ARCTIC
Positive Albedo effect…read more

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THE ARCTIC
Impacts of the environment
· Increasing temperatures have led to:
The tree line moving farther northwards ­ an indication that
temperatures are getting warmer
The Tundra ecosystems in the Arctic being lost as climate warms and
other plants take over
Permafrost ( permanently frozen ground) being thawed out.
Spreading of new species ­ such as the spruce bark beetle ­
changing the food chains
Increases in the use and deforestation of boreal forest ­ losing their
ability to act as carbon sinks…read more

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