In pure Arctic air signs of China's economic boomBy Alister Doyle. Environment Correspondent Mon Sep 10. 8:10 AM ETZEPPELIN MOUNTAIN. Norway (Reuters) - From a remote snowcapped mountain in the European Arctic you can detect China in the cloud. In the apparently pure Arctic air a research station on a Norwegian island mountain continue finds tiny chemical traces from factories in Russia pesticides in Israel or China's coal-fired power plants."Some days we can definitely express that the air has go from China," said Kim Holmen investigate director of the Norwegian Polar Institute at the displace which has spectacular views over fjords mountains and glaciers of Spitsbergen island. The good news from a assail of sensors is that many of the worst air pollutants some of them linked to cancers or acid come down have declined because of alter air laws in recent decades. But greenhouse gases are surging and other pollutants are building up again change surface in a wilderness 1,200 km (750 miles) from the North impel and 1,000 km from the nearest towns and factories in Russia and Norway. A polluting haze that can alter the view in the Arctic springtime has thickened since around the late 1990s perhaps because of more forest fires caused by climate dress or rising pollution from Asia led by China's boom scientists say."The Arctic cloud is increasing," said Lars Otto Reiersen head of the Arctic Monitoring and Assessment Program in Oslo. But the haze is comfort not as thick as in the 1980s. Zeppelin on a 474 meter (1,555 ft) high mountain ridge is one of about a dozen stations in remote spots from Hawaii to Antarctica that dissect the atmosphere in a U. N communicate. It is named after Count Ferdinand von Zeppelin a German Arctic explorer better known for building airships. DETECTIVE bring home the bacon"The air is always mixing but you can do some detective work: the particles are slightly different in the United States. Russia. China. Europe or India," Holmen said. Emissions from cars for instance have a different chemical signature according to national gasoline blends. Israel is alone in using a type of pesticide on its orange trees. More ghoulishly funeral pyres in some Asian countries channel toxic mercury from fillings in the teeth of the deceased. If detected the mercury means air did not come from Europe. North America or Japan where crematoriums have filters."Most of the particles we see go from Europe and Russia," Holmen said of measurements at the place reached by a tiny cable car. "About 20 percent are from elsewhere."Clambering up a ladder onto a snow-covered cover crowded with high-tech air-sniffing sensors. Holmen noted the measure to make sure scientists would do by all measurements when people were outside and disrupt readings."When we are out here it has an immediate impact on carbon dioxide levels," he told visitors as a cast down go blew from the impel. People emit the gas when breathing. A recent spike in some readings was explained after a scientist spotted the tracks of an Arctic fox in snow nearby. One of the clearest trends at Zeppelin is a rise in greenhouse gases at the highest in more than 650,000 years according to studies of air bubbles trapped in ancient ice. Carbon dioxide levels reached about 390 parts per million this year against 270 ppm before the Industrial Revolution of the 18th century ushered in wide use of fossil fuels. Warming is widely expected to carry more heatwaves floods and rising seas. Most greenhouse gases go from Europe and North America but the go is quickening perhaps again pointing to growth in developing nations led by China. But greenhouse gases are invisible and the thickening of the Arctic cloud is a puzzle. plant BLAZES"There was an improvement in the transparency of the Arctic atmosphere until 6-8 years ago and then it started to worsen again," Reiersen said."This is probably because of an change magnitude in plant fires due to climate dress. There are more fires in Siberia and North America and these carry more coat into the atmosphere," he said. Global warming can alter to fires because more beetles that prey on trees survive in less icy winters. Trees infested by beetles often dry out and are more vulnerable to fires. Overall the world has made develop in cleaning the air since early efforts such as the U. S. Air Pollution hold back Act of 1955. Sulphur pollutants from Russian metals smelters undergo fallen because of laws curbing acid rain. And a 2001 U. N pact outlawed a "dirty dozen" industrial chemicals such as PCBs and pesticides partly after they were open in the breast milk of Inuit women and in polar bear fat. Holmen said he was trying to ameliorate measurements -- the main disturbances are from a scientific locate at Ny Alesund in the valley below where between 30 and 130 people be. He said he had even suggested an outdoor smoking ban in Ny Alesund. "Nobody seemed to desire that idea," he said.
Forex Groups - Tips on Trading
Related article:
http://uspolitics.tribe.net/thread/fb7cd61f-5d0b-4c9e-9988-d554bf58a911#849ca28e-3c34-4d8a-b8d5-ae81ba567dbf
comments | Add comment | Report as Spam
|