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Impacts of climate change on Canadian arctic
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Impacts of climate change on
Canadian arctic
Ice Thickness
The average thickness of the arctic sea ice has been decreased by about 10-15% over these past 30 years
Bibliography
http://www.wwf.ca/conservation/arctic/
Some areas show a decrease in thickness of up to 40% between the
60s and late 90s
http://www.theglobeandmail.com/technology/science/shrinking-polar-bears-a-barometer-for-the-climate-sensitive-north/article20904215/
Introduction
Climate is long term average weather conditions, climate also includes extreme weather events, as well as ice, snow, and circulation patterns in the atmosphere and ocean.
http://www.greenfacts.org/en/arctic-climate-change/
In Alaska and Western Canada, winter
temperatures have increased by as much as 3-4 degrees in the past 50 years
http://www.climatechange.gc.ca/default.asp?lang=En&n=036D9756-1
Key Terms
https://www.cpj.ca/content/climate-change-canada%E2%80%99s-north
By: Jackson Allen & Tyler Dawson
Variations in solar radiation, major volcanic eruption, interactions between the
atmosphere and oceans, can all influence a change in climate
Information sources about climate
conditions show that the current warming trend is unusual
Small Temperature
Changes
Even an increase of 2°C could be too much. Even a slight change in temperature can completely change the characteristics of the region
Melting Ice
Lost Ice
In the 1980s the Arctic contained approximately two million square kilometers of ice that was determined to be at least five years old.
If all the sea ice were to melt, the sea level would rise about 70 meters
At the end of the melt-season in September, only 57,000 square
kilometers of that older, thicker ice
remains
Over the past 30 years, the area covered
by sea ice has been decreased by approximately 8%
Conclusion
The Arctic sea ice is melting at an alarming rate
Small temperature changes can completely alter environmental characteristics
The majority of current ice is only around for one year before melting
If the climate continues to warm at this rate, once the ice all melts, the polar bears' habitat will be gone
If the sea ice melts and the polar bears lose their habitat, they will soon become extinct
Melted Ice
Facts
Questions
When does rain mainly fall in the Arctic?
In 2080 Arctic summer sea ice is expected to disappear completely
Due to climate change, rain now falls mainly in winter, rather than spring or autumn
In the 1980s, approximately how many square kilometers of ice that is determined to be five years old was there?
All the ice that has melted over the past 30 years can cover an area larger than Norway, Sweden, and Denmark combined
In 2040 summer sea ice likely
limited to the northern coasts of Canada and Greenland
If all of the Arctic sea ice were to melt, how high would the sea level rise?