The cyclone that smashed in to Myanmar,Nargis, changed gear from a category 1 to a category 4 cyclone just before it came to the land.
This has provoked a new debate between the Climatic scientists that whether global warming is the reason for more powerful and deadly storms
This debate is not the result of a single event. In a similar incident Hurricane Katrina smashed the US Gulf Coast in 2005 and destroyed everything
Similarly in 2007, the Arabian Peninsula was hit by a super-cyclone, Gonu
The question arises that are all these events of massive destruction in terms of both lives and property, linked with each other
Are these events provoked by global warming?
That's a question that causes fierce jousting among climate scientists.
Experts agree that a single weather event cannot be pinned to climate change, which is part of a long-term pattern spanning decades or centuries.
Some experts argue the evidence is already hard enough to identify a probable trend: storms are becoming more powerful as global warming heats up the oceans.
One of the most respected voices in the field is that of Massachusetts Institute of Technology (MIT) meteorology professor Kerry Emanuel, who calculates that the power of tropical cyclones has roughly doubled since the 1950s.
The massive increase has especially occurred over the last three decades, mirroring a rise in man-made global warming, he notes. And the trend stepped up a couple of gears from the mid-1990s, when global mean temperatures began to scale ever-higher annual peaks.
Others argue that a long-term historical data is a must -- in which big weather oscillations and cycles in hurricane activity are filtered out -- in order to have a clear idea.
