implications of climate change
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Implications of Climate ChangeTRANSCRIPT
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Implications of Climate Change
ByTanmay SrivastavaMSc 1st SemesterInstitute of Science,Nagpur
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What is Climate Change:
• Climate change is the time variation in weather patterns occurring over periods ranging from decades to millions of years.
• Climate change is caused by factors such as Biotic processes, variations in Solar Radiation received by Earth, Plate Tectonics, Volcanic eruptions and Human Interference.
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Evidences of Climate Change:
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The Global Implications of Climate Change:
• Increase in Earth's average temperature:
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• Average global temperatures are expected to increase by 2°F to 11.5°F by 2100, depending on the level of future greenhouse gas emissions, and the outcomes from various climate models.
• By 2100, global average temperature is expected to warm at least twice as much as it has during the last 100 years.
• Ground-level air temperatures are expected to continue to warm more rapidly over land than oceans.
• Some parts of the world are projected to see larger temperature increases than the global average.
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• Changes in the amount and intensity of precipitation will vary by region.
• The strength of the winds associated with tropical storms is likely to increase.
• Annual average precipitation is projected to increase in some areas and decrease in others.
Change in Precipitation patterns:
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• For every 2°F of warming, models project about a 15% decrease in the extent of annually averaged sea ice and a 25% decrease in September Arctic sea ice.
• The coastal sections of the Greenland and Antarctic ice sheets are expected to continue to melt or slide into the oceans.
Loss in Sea Ice:
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• Warming temperatures contribute to sea level rise by: expanding ocean water; melting mountain glaciers and ice caps; and causing portions of the Greenland and Antarctic ice sheets to melt or flow into the ocean.
Sea Level Rise:
• Since 1870, global sea level has risen by about 8 inches.
• Global sea level for the next century is expected to rise at a greater rate than during the past 50 years.
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Ocean Acidification:
• Oceans become more acidic as carbon dioxide (CO2) emissions in the atmosphere dissolve in the ocean.
• The pH level of the oceans has decreased by approximately 0.1 pH units since pre-industrial times, which is equivalent to a 25% increase in acidity. This is expected to rise due to continuous rise in CO2
• Ocean acidification adversely affects many marine species, including plankton, molluscs, shellfish, and corals.
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Thank You!