miƩrcoles, 25 de noviembre de 2009

Good-Bye Arctic.

Our perception of the Arctic region is that its distance from industrial centers keeps it pristine and clear from the impact of pollution. However, through a process known as transboundary pollution, the Arctic is the recipient of contaminants whose sources are thousands of miles away.

Large quantities of pollutants pour into our atmosphere, as well as our lakes, rivers, and oceans. In the last 20 years, scientists have detected an increasing variety of toxic contaminants in the North, including pesticides from agriculture, chemicals and heavy metals from industry, and even radioactive

Originally, Arctic contamination was largely blamed on chemical leaks, and these leaks were thought to be "small and localized."

The impact of the haze on Arctic ecosystems, as well as the global environment, has not been adequately researched. The pollutants have been studied in their aerosol form over the Arctic. However, little is known about what eventually happens to them. It is known that they are removed somehow. There is a good degree of likelihood that the contaminants end up in the ocean, likely into the North Atlantic, Norwegian Sea and possibly the Bering Sea — all three very important fisheries.

Currently, the major issue among researchers is to understand the impact of Arctic haze on global climate change. The contaminants absorb sunlight and, in turn, heat up the atmosphere. The global impact of this is currently unknown but the implications are quite powerful.

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