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Warming Of The Arctic [arctic cat snowmobiles]

Science Daily has published The Arctic is warming much more rapidly than previously known, at nearly twice the rate as the rest of the globe, and increasing greenhouse gases from human activities are projected to make it warmer still, according to the findings of a 300-strong team of international scientists.

At the rate global warming is going, the Arctic is predicted to lose half of its summer ice as the century closes when temperature is projected to rise by another 4 to 7 degrees Celsius by year 2100. This melting is to include a sizeable section of the Greenland Ice Sheet. Major global impacts will be continued rise in sea-level and intensifying global warming, as per the final report of the ACIA or the Arctic Climate Impact Assessment. The exercise was ordered by the Arctic Council, an executive body composed of the 8 eArctic nations, 6 indigenous POs or Peoples Organizations, and the IASC or the International Arctic Science Committee. The latter is a worldwide organization appointed by 18 national science institutes.

The assessment's report was first broadcast in detail at a symposium in Reykjavik, Iceland in November 9 to 12, 2004. ACIA's data were based on an average estimate of emissions of CO2 and other gases that aggravate the greenhouse effect in the years to come. The report also integrates results from 5 major climate simulations done by the Intergovernmental Panel on Climate Change or IPCC.

As Robert Corell, ACIA Chair mused, people in the Arctic are feelng the impacts of global warming as the Arctic is now seeing the fastest and extremely serious climate change. These are predicted to increase even more as the years roll by.

Here are some of the findings:

In the past 50 years, winter temperatures in Alaska, Western Canada and Eastern Russia have registered an increase of as much as 3 to 4 degrees Celsius. And in the next century, temperatures are projected to increase by

4 7 degrees Celsius or 7 13 degrees Fahrenheit.

As mentioned earlier, summer sea ice in the Arctic is seen to drop by 50% at the turn of the century. There is even a prediction of its almost complete disappearance which can kill ice living seals. This will prove too much for the indigenous peoples of the region. who depend on these animals for food.

Global warming increases melting of the Greenland Ice Sheet, increasing the rates at which sea levels rise. In the long run, Greenland will hold enough melted ice that sea level could rise to as much as 7 meters or 23 feet. The coastal towns around the Arctic now face the risk of erosion and flooding because of this.

The possibility of the extinction of some species of seals and polar bears is very evident.

Health and food security of the natives are also areas that can be affected. This poses a challenge on the other tribe's culture.

The Assessment has reported that many of the projected physical, ecological, social and economic changes have already commenced. A major goal of the ACIA is to determine variability of ultra violet radiation and its impact on society.

For the study, the University of Alaska, Fairbanks, hosted the ACIA Secretariat at was hosted at the International Arctic Research Center at the University of Alaska Fairbanks. Funding for the Secretariat was provided by the U.S. National Science Foundation and the National Oceanic and Atmospheric Administration.

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Snowmobiles Going Green [ arctic cat snowmobiles ]

I Love Snowmobiles [ arctic cat snowmobiles ]

A snowmobile is a motorized sled or a modified stock chassis that carries one or two people over snow. Often called a snow scooter or a snow machine, it is usually powered by a two or four-stroke engine. Though snowmobiles originated to ride people across distances covered with snow, it is now a popular winter sport in Canada, North America and the colder regions of Europe. However, even now snowmobiles are used for travel in the Arctic areas, though the major attraction of snowmobiles is for recreation only, especially in areas where snow cover is stable in winter. In fact, snowmobile enthusiasts love to drag race on grass and asphalt strips in summers as well.

The standard snowmobile measures from 5 to 8 feet in length and 2½ to 3 feet in width. It rides on two short skis in the front and a wide track at the rear. It has an engine of up to 150 horsepower that moves the track, propelling the snowmobile. You can steer the snowmobile with handlebars and go at the speed of 0 to over 100 miles per hour. Snowmobiling was once considered an environmental hazard, mainly because of the two-stroke engines which have since graduated to four-strokes, reducing the pollution levels considerably.

The earliest snowmobiles were used for mail delivery. But, the Ford Model Ts that were modified for the purpose, replacing tracks and skis for the undercarriage, could not be operated in more humid areas. The modern snowmobile in its open-cockpit one-or two-person form came as late as 1970 when many competitors sprang up and nearly two million snowmobiles were sold in three years from 1970 to 1973.

These days we have the industrial-type snowmobiles that are large enclosed vehicles. They are powered by strong 4 to 8 cylinder diesel or petrol engines and are completely tracked with no skis in the front. They can carry passengers and cargo, and are meant for grooming cross-country ski trails.

Snowmobiling is an exciting sport that can make some operators reckless. Many accidents happen due to snowmobiling in the dark and speeding. People die every year in snowmobile accidents. When you go snowmobiling, you should make safety your chief concern because careless snowmobiling has often resulted in death or serious injury. You should never attempt to snowmobile while drinking. Also, watch out for obstacles and be very careful when crossing roads.

Snowmobiling is a major source of income for people in the small towns of Canada and the United States where tourism is the only activity during winter and summer months. Every year, Americans and Canadians spend over $27 billion on snowmobiling including expenditures on equipment, clothing, accessories and snowmobiling vacations. This goes to prove how popular snowmobiling is in these regions!

Published At: www.Isnare.com
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