16.09.11.Etim summer melting of ice in the Arctic almost broke the record in 2007, reducing the area to the second lowest level in 50 years of records, reports Associated Press.
This means that the reduction of the northern ice cap of the planet — a long-term process, say climatologists. Cause they consider it global climate change.
Measurements of the National Data Center for Snow and Ice (National Snow and Ice Data Center) United States, last week the total area of ice cover in the Arctic has decreased to 4.33 million km ².
Less ice in the Arctic was only in 2007. In general, since 1979, when it began to be measured by satellites, it has been steadily declining. Year low in 2011 year low below average for all years of observations by 36%.
"Of course, the overlay of natural cycles and" downward "trend caused by global warming, which, alas, the main role belongs to the man, strengthens the greenhouse effect, — says Alexey Kokorin, head of the" Climate and Energy »WWF Russia. — In the following years, the ice will be a little more, then again a record minimum ice and so on. It is important to understand that this is not so much cleaning Arctic ice as the growing instability of the ice regime. "
Large-scale melting of ice in the Arctic, on the one hand, opening up the northern trade route, which promises to many countries, including Russia and the economic benefits. On the other hand, this may lead to an increase in global sea level by 90-160 cm by 2100, threatening coastal flooding in many areas, and even countries.
The views of scientists on the extent to irreversible processes occurring in the Arctic, diverge. According to one recent study, the area of ice in the Arctic, five thousand years ago, was 50% lower. And this has not been a critical point, because after that, he began to grow. In other words, we need to worry yet. However, many experts feel quite differently.
Source: Round the world