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climate

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by

Nastaran Imanian

on 11 January 2013

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Transcript of climate

Climate Change Canadian Arctic Problems

• Global Impact Temperature

*Temperature
*Agriculture
*Green house effects
*Ecosystem
*Impact on Humans The rapid melting of the Canadian Arctic ice arises a series of issues. These issues will impact globally on the rest of the world. It might not necessarily be a direct impact, but everyone will somehow suffer the consequences.
This is because of global warming *Green house gases are accumulating in the atmosphere as a result of global warming. Some of them include methane, carbon dioxide, nitrogen dioxide, etc.

*There are many factors that contribute to the increase of greenhouse gases most importantly the burning of fossil fuels.

*The average global temperature has increased by about 0.7°C in the last 100 years. Arctic temperatures have increased overall at almost twice this rate

*Thawing of permafrost releases carbon dioxide, it is becoming less and less reliable for various reasons

*Since the ice is melting there is less reflectivity on the surface of the earth therefore there is more open darker areas, which absorbs the sunlight and heat causing the ice to melt at even a faster rate. It is a vicious cycle of cause and effect. Water Body Levels Impact on People *The change in weather and ecosystems will also affect people more directly.

*Undeveloped countries will be affected the most

*On a larger time scale, fresh water will become scarcer, especially during the summer, as mountain glaciers disappear, also will have an impact on the resources.

*Increase in natural disasters

*Spread of diseases Impact on Ecosystem How can we help? *Global warming will result in more frequent hot days and fewer cool days, as it is already occurring.

*Storms, floods, and droughts will become more severe as precipitation patterns change.

*Tropics will more likely start receiving less precipitation and the Polar Regions will start receiving more precipitation, which will help melt and weaken the ice sheets. *Global warming’s impact on sea level will cause more frequent coastal flooding.

*Two main factors contribute to noticeable rising sea levels: the first is thermal expansion; as ocean waters warm, it expands.

*The second is from land-based ice, the major store of water on land is found in glaciers and ice sheets. As temperatures rise, ice melts at a faster rate. *Global warming is putting more pressure on ecosystems, marine animals and terrestrial animals.
*Warmer temperatures have already shifted the growing seasons in many parts of the globe, which effected agriculture.
*The growing seasons in many parts of the northern hemisphere became 2 weeks longer.
*Spring now comes earlier in both hemispheres. Warmer seasons also extended the growing seasons.
*Global warming evaporates more water out of the ocean but absorbs all the moister from the soil and creates droughts.
Forest fires - 30% of the carbon dioxide Argentina 1928 Patagonia 2012 Rhone Glacier Switzerland Argentina Patagonia 1928 Patagonia 2012 more environmental ways to travel around (bike, carpooling etc.)

save energy

more environmental friendly way to produce energy

less resource consumption Problems: THANKS FOR LISTENING ! BY: Sara, Nastaran, Alifiyah, Simran.
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