Glaciers’ melting
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If green house gas emissions grow like nowadays, Nordic polar region can warm up to ten degrees. Glaciers’ melting causes changes in sea powers and brings up sea levels. Polar bears, penguins and other animals on Polar Regions will die. Nordic Germany’s climate forms to Southern Finland on this century, which means that for example trees are growing faster and there is more choice on crops. Sea lanes can be opened whole year. Consequences of climate changes are under investigation all the time. Especially Arctic area is warming up very fast, because it has warmed up almost two times faster than other earth. The reason for this is that consequences of warming are speeding up the effect. For example in the tropics most of the ground’s extra heat goes to transpiration, when in the north extra heat warms up atmosphere straight. When airflows are changing, it influences to that how fast different areas warm up. Glaciers’ melting has led to sea levels’ rising. Levels have rise in last hundred years about ten to twenty centimetres. Melting and increased discharges of rivers bring more fresh water into the ocean, when oceans’ salinity shrinks. Then flows of oceans start to change. And sea levels’ rising covers cities under it.  Sea ice’s withdrawal causes extinction of different animals, for example walrus, seal and polar bears. Also for example reindeer’s food situation gets harder. Climate change keeps ozone layer thin, which causes for example large ultraviolet radiation in the spring.  There has disconnected many ice blocks of Greenland’s iceland, for example the newest, Manhattan’s iceland sized block. Greenland’s melting accelerates all the time, as every glaciers’ melting. Glaciers’ fast melting may cause for billions of people shortage of water across the world in the future. World states should take up quickly to operations to stop warming.  Glaciers’ melting also creates “carbon sink”, which means that there is lots of phytoplankton on liberated sea areas under melted ice. Phytoplankton ties carbon dioxide from atmosphere. When plankton dies, it sinks down to seabed and carbon dioxide gets in stock there for even millions of years. Glaciers’ melting is very worrying, when we are thinking about the whole planet. Global warming should be stopped as fast as possible. |
Toimittaja(t): Kristofer,Saara and Alex
Luotu: 9.9.2010 13:57
Muokattu: 16.9.2010 18:55