As Sea Levels Rise Coastal Wetlands are Inundated with Sea Water and

As sea levels rise coastal wetlands are inundated

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As Sea Levels Rise Coastal Wetlands are Inundated with Sea Water and Effectively Disappear. Coastal wetlands are buffer zones that lessen the impact of storm surge from hurricanes and nor’easter storms. They protect the coastal zones. Coastal wetlands are nurseries for many fish species. Coastal wetlands filter sewage that may find its way to the oceans.
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Melting of the World’s Ice Sheets and Mountain Glaciers If all the ice in the world’s mountain glaciers and ice sheets melted, sea level would rise 75 meters (244 feet). If Antarctica’s two Ice Sheets would melt, ocean levels would rise 200 feet. If all of Greenland’s Ice Sheet would melt, ocean levels would rise 23 feet. If all the World’s Mountain Glaciers would melt, ocean levels would rise about 21 feet.
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Impacts of Climate Change in the Polar Regions Temperature response in polar regions two thirds greater than the global average. Thus warming has been greatest at high latitudes. Stable polar troposphere suppresses vertical mixing which limits upward transfer of surface heat. Biggest temperature increase in polar regions in the winter. More open water means more heat is given off. Mountain glaciers worldwide lost 30% of their ice mass in the 20 th Century.
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Impacts of Climate Change on Lakes. Lake Victoria in Africa, and other water bodies in Africa, are drastically losing water. Lakes are very sensitive to temperature increases.
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Death of Trees in the Western USA Trees in the western USA are dying twice as quickly as they did three decades ago. Wide range of tree species are dying, including pines, firs, and hemlocks and at a variety of altitudes . Death rates of trees overall have more than doubled since 1955. Pacific Northwest and British Columbia – deaths doubled in 17 years. California – deaths doubled in 25 years. Warmer Temperatures reduce winter snowpack cause earlier snow melt lengthen the summer drought Longer summer drought encourages the growth of insects and diseases that attack the plants, like the tree killing bark beetle infestations that plague the Western USA.
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Consequences of Climate Change 1) Environmental Refugees 2) Less severe winters, but more precipitation (snow) during the coldest part of the winter. 3) Crop yields are up in the Northern-most Latitudes. (Longer growing season.) 4) Crop yields are down in much of the rest of the world where most of the world’s people live. (Warmer and drier) 5) Drier conditions in breadbaskets, resulting in decreased soil moisture. 6) Less water available for irrigation 7) Big increases in pathogens and pests and weeds, all of which reduce crop yields.
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8) Sea level rise from thermal expansion and melting of mountain glaciers and ice sheets. 9) Less energy needed for heating, more energy needed for air conditioning. 10) New weather patterns. 11) Greater incidence of infectious diseases. 12) Air pollution levels harmful to human health rise as temperatures rise. 13) Many more endangered and extinct biological species.
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Effects of Climate Change – New Weather Patterns 1) A greater frequency of high intensity hurricanes because of warmer ocean temperatures.
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