Saturday, June 7, 2008

Hurricanes and Global Warming


Hurricanes, typhoons, and cyclones have always bedeviled coasts, but global warming may be making them worse. After doing a research, a series of prominent papers has been published claiming a link between global warming and increasing power of Atlantic hurricanes. There is regular increment in the level of sea level as the glaciers melts. And this will result in higher storm surges, that also increase coastal flodding and damages.

The global community of tropical cyclone researchers and forecasters represented the International Workshop on Tropical Cyclones of the World Meteorological Organization and the summary statement is :

"The surfaces of most tropical oceans have warmed by 0.25-0.5 degree Celsius during the past several decades. The Intergovernmental Panel on Climate Change (IPCC) considers that the likely primary cause of the rise in global mean surface temperature in the past 50 years is the increase in greenhouse gas concentrations.

There have been a number of recent high-impact tropical cyclone events around the globe. These include 10 landfalling tropical cyclones in Japan in 2004, five tropical cyclones affecting the Cook Islands in a five-week period in 2005, Cyclone Gafilo in Madagascar in 2004, Cyclone Larry in Australia in 2006, Typhoon Saomai in China in 2006, and the extremely active 2004 and 2005 Atlantic tropical cyclone seasons - including the catastrophic socio-economic impact of Hurricane Katrina.

Some recent scientific articles have reported a large increase in tropical cyclone energy, numbers, and wind-speeds in some regions during the last few decades in association with warmer sea surface temperatures. Other studies report that changes in observational techniques and instrumentation are responsible for these increases."

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