Wind Power

Wednesday, June 18, 2008

Abnormal rise in greenhouse gas, methane, in the earth atmosphere causing arctic ice to vanish in a couple of years!!

Abnormal rise in greenhouse gas, methane, in the earth atmosphere causing Arctic ice to vanish in a couple of years!!

It has been reported that, due to rapid, unchecked and unethical industrialization in many parts of the globe, the concentration of methane, a very prominent greenhouse gas, has been rising and in last one year alone it has risen by about 0.5%. We all know that, methane is the second most important gas causing man-made climate change. Each molecule causes about 25 times more warming than a molecule of CO2, though it survives for shorter times in the atmosphere before being broken down.

Further, it has also been known to us that, already global climate is at great disastrous condition because of present rise in carbon dioxide (CO2) levels, which is significantly higher than the average annual increase for the last 30 years. It has also been recently reported that, CO2 concentration has risen by 2.4 parts per million (ppm) in last one year; as against the average annual increase of 1.65ppm between 1979 and 2007. Thus, it shows evidence that, concentrations of greenhouse gases are rising faster than they were a decade ago. The methane concentration figure is more awesome and potentially of more concern.

Because of the above abnormal rise in greenhouse gases in last one year or so, scientists fear that, it could reflect melting of permafrost and drying of tropical wetlands more rapidly. It has also been reported that, concentrations of greenhouse gases have been more or less stable since about 1999 and thereafter rapid increases.

Industrial reforms in Asia, Europe and South American countries in last one decade reflected abnormal rise in greenhouse gases, especially of carbon dioxide and methane. Changes of methods rice farming processes and the capture of methane from landfill sites contributed to this rise, it is felt. Also, possibilities of release of methane from frozen zones of the world, notably the Arctic permafrost, as they warm cannot be ruled out.

The rapid unchecked increase in coal fired industries (without cleaning coal) such as power plants, steel plants etc., are mostly responsible for rise in concentration of CO2.

The sustained rise of greenhouse gases along with El Nino and La Nina (opposite of El Nino) conditions, the earth is experiencing warming effects. As per the new scientific analysis, because of the warming, the arctic snow melted most rapidly in last one year. They also predict that, the sea level could rise by more than one and half meters by another half century or so. Sea level rise of this magnitude would have major impacts on low-lying countries such as Bangladesh. Scientists also fear that, due to abnormal rise in average global temperature, in next five of six years there may not be any arctic ice left during summer.

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