Chapter10 - Climate systems and climate change Chapter 10...

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Climate systems and climate change Chapter 10
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Climate Climate is weather considered over many years, including its general state, variability and extremes Climatology examines the linkages between the earth-atmosphere-ocean system. Climatology examines how climate has changed in the past, at present and in the future. 2
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Climate and geographic space While climate has changed through time, earth surface has a huge range of different climate conditions Deserts Tropical forests Ice sheets 3
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Climate regions Earth huge range of climate conditions have some broad similarities so that they can be simplified into a few climatic regions. These climate regions influence the distribution of worlds ecosystems (so called biomes) 4
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Primary climate components Insolation (incoming solar radiation) Temperature Pressure Air masses Precipitation Examining temperature and precipitation reveals general climate types 5
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Climatic Relationships
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Climate classification system A system to grouping earths climates Several systems have been developed Here we will examine a system that uses temperature and precipitation as the basis for classification 7
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Tropical Mesothermal Microthermal Polar Highland Dry Classification Categories
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Generalized Climate Regions
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A climograph a) shows the monthly precipitation and temperature for a location b) indicates the soil types found at a location c) usually shows hourly temperature variability d) is a table showing the intensity of severe weather affecting a location e) All of the above
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Climographs 14
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How do these differ? 15
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Climate classification Study the details of the major climate regions on your own We may revisit them in the review session before the exam. 16
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Tropical rainforest climates are produced by a) sub-tropical high pressure b) sub-polar high pressure c) converging air near the Equator d) cold ocean currents e) All of the above
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Dry climates are most common a) on west coasts in the mid-latitudes b) near areas of sub-tropical high pressure c) near the ITCZ d) in mid-latitude coastal areas e) None of the above
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Climate Change 19
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Climate change Earth’s history have many examples of climate change Unique aspects of the current climate change 1) Scientific evidence points toward that current climate change is caused by human 2) Our society is vulnerable to climate change 3) Adaptation and mitigation in response to projected climate changes in the 21 st century will be challenging 20
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The industrial revolution 1769 James Watt patented his efficient steam engine that lead the way for the industrial revolution One of the steam engine’s main applications was the pumping of water out of coal mines 21 http://www.withouthotair.com/
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Coal and oil production 22 http://www.withouthotair.com/
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Increased carbon dioxide emissions 23
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Historical perspective of CO 2 • Atmospheric carbon dioxide (CO 2 ) is increasing at the fastest observed rate
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Chapter10 - Climate systems and climate change Chapter 10...

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