This years hurricane season was predicted to be a busy one with Colorado State University predicting 18 tropical storms of which 10 would reach hurricane force. Record sea-temperatures and a weather system known as La Niña were cited as the cause to such activity. However, compared to the last few years which saw larger hurricanes forming before 20th August, this year has been unusually quiet, defying predictions. The reason for this is a weather pattern over Pakistan and Russia that has disrupted the jet stream. This weather pattern is also responsible to the severe floods in Pakistan and the heat-wave that struck Russia over the Summer (causing widespread wildfires and food shortages). As a result, instead of the humid air needed for the development of tropical storms, dry air is sitting above the Atlantic’s surface.
Is this the beginning of a wider shift in climatic patterns? Are anomalies such as this merely that, i.e.: a glitch in the records? Or is it due to something more disturbing such as global warming? Although the USA and the Caribbean Islands may have been given some much needed respite from hurricane season, the environmental consequences of Russia’s extreme weather may prove to have a far more profound impact on the world.
Sources: www.newscientist.com 3rd September 2010
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