proximity to water water heats up and cools down more slowly than land. as a result, areas very...
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Proximity to water
• Water heats up and cools down more slowly than land.
• As a result, areas very close to water stay cooler in summer and warmer in winter.
• This greatly effect greatly influences the climate of many Atlantic Canadian communities.
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Elevation
• Temperatures throughout the Atlantic provinces are also influenced by elevation.
• As height increases, temperature decreases.• This is because air is so much thinner at high
altitudes.
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Invention for climate:
• Our climate has sparked some interesting inventions: the snowblower, snowplough, insulation, underground shopping malls, winter fuels and lubricants, and all weather asphalt.
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World Climate Change
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The Earth’s atmosphere
• Scientists have been warning for years that our atmosphere is being altered by gases produced through human activity.
• These gases are producing a “greenhouse effect”.
• Greenhouse gases trap radiation from the sun, rather than allowing it to escape to the upper atmosphere.
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Temperature Changes
• The result of “trapping” this radiation is a change in temperature all over the world!!
• In some parts of the world, temperatures have increased over the last 50 years.
• In others, including the Atlantic provinces, the average temperature has decreased.
• The gases primarily responsible for climate change are: carbon dioxide, nitrous oxide, and methane.
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Carbon Dioxide
• Carbon dioxide accounts for 80% of Canada’s total greenhouse emissions.
• The majority of carbon dioxide results from burning fossil fuels.
• Driving our car(s), using the clothes dryer, watching television, or leaving the lights on are all examples of burning fossil fuels.
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Part of the Solution
• When we choose to ride a bike, hang our clothes to dry, read a book, or turn out the lights, we are directly contributing to a solution to climate change.
• Other solutions:
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Methane and Nitrous Oxide
• Sources include landfills, agricultural practices such as fertilizer production and consumption.
• We can reduce the amounts of these gases by reducing the amount of waste we generate by composting, recycling and
• MOST IMPORTANTLY: by reducing our consumption of disposable items.
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Right now, with a partner:
• How do you, personally contribute to climate change?
• Environmentalists encourage us to “think globally, act locally”. How is this true??
• Some say international cooperation will be necessary for change. How could this be true?
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Monitoring Weather
• Weather observers around Atlantic Canada use a variety of instruments to measure pressure, temperature, humidity, wind speed, precipitation, and clouds.
• These instruments include: sunshine recorders, wind speed and direction recorders, and Stevenson screens that hold maximum and minimum thermometers.
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From the air and space:
• Weather radar stations are located at Halifax, and Mechanic Settlement near Sussex N.B.
• Radar is useful in detecting, locating, and measuring the amount of precipitation in clouds.
• Weather satellites travel far above the earth, in the outer atmosphere and take pictures of the earth’s surface. Meteorologists use these images to make long term weather forcasts.
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Review of Weather and Climate
• This is the end of material that you will be responsible for on the test.
• Be diligent, as this unit contains a lot of information.
• A formal review will be available to all students on Monday.
• Test will be Wednesday March 24th
• Weather booklets should be handed in no later than Thursday March 25th