GLOBAL WARMING - "EARTH'LL HEAT!"

Recent analysis shows overall thinning from Central Lake Artik.Didapati highest depletion rates are in the Eastern region Artik.Berdasarkan SCIEX data collected by the National Science Foundation (Office of Naval Research), and NASA is not just a thinning of ice in 90 ' only, but it is continuing until now with the rate of depletion of 4 inches (0.1 m) per year.

A lot of ice mass loss given the dramatic effects of global climate change. Snow and ice cool the earth by reflecting up to 80% of energy from the sun directly into space.
Based on research done by the UNEP (United Nation Environment Program), they claimed that the ice in the polar (Arctic) will be thinned up to 60% if the percentage of carbon dioxide (CO2) in the atmosphere increases two times from now. It is expected to occur by the year 2050 if no action or steps taken by the parties responsible for the ongoing mengcegahnya.
In Alaska, Western Canada and Eastern Russia average winter temperatures rose by 4-7 ° F (3-4 ° C) in the last fifty years, and this number is expected to increase sehigga 7-13 ° F (4 - 7 ° C) before the next 100 years.
By the end of this century is expected that the Arctic sea ice will decrease by 50% by panas.Isipadu season on melting ice in Greenland could increase global sea levels as high as seven meter.Ais available in Alaska melting twice as fast in the past ten years . This causes an increase in global sea level of 9%.
On the Greenland ice sheet thinning Arctic sea close to a meter per year.


Antarctica










Introduction

Antarctica is situated in the south of Australia at latitude 60 ° S. This region consists of 7 million cubic miles of ice square represents 90% of the ice on earth. Aisnya average thickness is 2164m with 4785m of the most dense.

Antarctica is an area the size of the United States and Mexico combined. It represents 70% of the world's fresh water. If the western part of the liquid, global sea level could rise as high as 15-20 feet. While sea levels will rise if the eastern 200 feet of liquid.

Withdrawal of Ice in Antarctica






Figure Antarctica

Through the observation by some scientists, found the block of ice clouds are formed from Larsen 'ice shelf' on the peninsula of Antarctica and the melting of ice occurred on a large scale in the northern part of 'ice shelf'. Based on reports by the British Antartic Survey (BAS), the temperature in the Antarctic Peninsula rose by 0.5 ° C per decade since 1947.


Evidence of ice thinning can be found in some lakes in Antarctica. These lakes are very sensitive and suitable as a guide short-term temperature changes. New Zealand scientists reported a water level of Lake Vanda in Wright Valley, an increase of 1 meter per year. This increase is related to the melting of ice into the lake through which the Onyx River has increased the volume more than doubled since the last decade. Other studies on six other lakes in Antarctica showed thinning of the ice on the surface to 40% over the last decade.


In addition, based on measurements made at sea between 1973 and 1988 showed a decrease in the projected area of sea ice in the winter up to 33 km. BAS scientists at Faraday Station, Galindez Island reported a 1m thick ice disappeared between 1973-1988.


In 1986, 11 000 km2 of the Larsen ice shelf, and 11 500 km2 of ice shelf broke Filcher and drifted into the Weddell Sea. At the same time about breaking Theraites 1000km2 iceberg. The total loss of ice is four times more than the accumulated snow per year.


In 1991, BAS has produced satellite images showing the rapid breakdown of the Wordie ice shelf, and they have suggested that high temperatures in the Antarctic Peninsula as a source. More than 1300 km2 Wordie ice shelf disappeared since 1966.






Pieces of ice along the coast of the Antarctic Peninsula are very sensitive to temperature changes even small changes occur. Other evidence indicates breakdown of ice sheets have been issued as early as 1992, through images taken within the past few years BAS reported a reduction in the snow piles Stonington Island, while the comparison of satellite images on the coast of Antarctica shows a very clear change in the volume of ice in the coastal area said.


In early 1993, BAS reflect an increase in the formation of lumps of ice, but said that there was evidence of inappropriate links with global warming. Added iceberg was confirmed later in 1993 from data collected by ship across the ocean south and also collected by the Norwegian Polar Research Institute. Although this study has questioned the accuracy. The institute suggests that this ice sheet breakdown occurs more rapidly than expected.






In February 1995, a giant-sized iceberg Luxembourg (2600km square and over 77km) split from the Antarctic Peninsula, continuing research reveals the ice that connects the mainland to the island of James Ross had lost the northern Larsen Ice-Shelf. According ABAS provides stronger evidence of iceberg split due to the increase suhu.Glaciologist, Dr David Vaughan said "There is no doubt That the climate on the Antarctic Peninsula has warmed significantly over the past few challenged. What we are seeing now are changes only just working through to glaciers and ice sheets.