Rise in Sea-Level!

Posted on January 2, 2014
Location: London
Rise in Sea-Level!

Glaciers are large pieces of snow/ ice that are found on land surface all year long. They get accumulated, they form a shape, they grow, they move, they slide, they reduce as well. Mostly they're found in the western United States, Alaska, the mountains of Europe and Asia, and many other parts of the world.

Rise in temperatures due to global warming, cause glaciers to melt down faster than they can accumulate. Glaciers all over the world have been melting for at least the last 50 years, and the rate of melting in a rate, causing concern/fear all over the world. Many glaciers in Alaska and other parts of the United States have shrunk noticeably. If temperatures keep rising, glaciers will continue melt, and some could disappear completely. By melting, they add more water into the ocean, which causes sea level to rise.

Average sea level around the world has rose by nearly 7 inches, over the past 100 years. Concern is sea level can change by different amounts in different places. Some regions show a sea-level rise substantially more than the global average (in many cases of more than twice the average), and others a sea level fall. If we keep adding greenhouse gases to the atmosphere, the average sea level around the world could continue to rise. And the Sea level could rise even more if the big icebergs in Greenland and Antarctica melts further.

Rising sea level is a threat to people who live near the ocean. Some low-lying areas will have more frequent flooding, and very low-lying land could be submerged completely; for example, many major cities such as London, New Orleans, and New York already need storm-surge defences, and would need more if the sea level rose. Sea level rise could also displace many shore-based populations: for example it is estimated that a sea level rise of just 200 mm could create 740,000 homeless people in Nigeria. Maldives, Tuvalu, and other low-lying countries are among the areas that are at the highest level of risk. The UN's environmental panel has warned that, at current rates, sea level would be high enough to make the Maldives uninhabitable by 2100.

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