Residents gather amongst the devastation in the aftermath of Typhoon Haiyan on 13 November 2013 in Tacloban, Leyte, Philippines. Typhoon Haiyan, packing maximum sustained winds of 195 mph (315 kph), slammed into the southern Philippines and left a trail of destruction in multiple provinces, forcing hundreds of thousands to evacuate and making travel by air and land to hard-hit provinces difficult. Photo: Kevin Frayer / Getty Images

By Michael Mann
16 November 2013

( – It is with a heavy heart and a respectful hand that I write this. Super Typhoon Haiyan has only just passed, and the devastation cannot yet even be fully understood. With that in mind, please consider a donation to the Philippine Red Cross.

But that will only aid those impacted by this storm. Not the next. Or the one after that.

This was the feeling captured by Yeb Saño, the Philippine’s lead negotiator to this year’s United Nations Climate Talks (COP). As he tearfully pleaded with the delegation gathered in Warsaw, Poland, he powerfully pressed them for action and challenged those who stand it its way. He dared those still unconvinced by the need for climate action to do a little sightseeing, and take in the impacts of rising sea levels as they surge inland in front of storms, of melting glaciers as they flood the land they once nourished, of drought-induced famine as it destabilizes weak nations and of unprecedented hurricanes and typhoons that have pounded the U.S. and Asia alike.

For now, super storms are still rare. However, models suggest more frequent and intense storms in a warmed world. A number of scientists suspect that certain recent storms like Sandy and Haiyan exhibited characteristics outside the range of natural variation.

Although exact measurements are hard to come by (there were no flights in the Western Pacific to provide direct measurements) satellite images along with readings of ocean heat seem to suggest that Haiyan was an unnaturally powerful storm. The science is hinting that this storm may not have been so catastrophic in a world without warming.

The unusually deep, unusually warm pool of water that provided the initial fuel is unlikely to have existed in a world without warming. Global warming-induced sea level rise contributed to the 20-foot storm surges that caught victims off guard, much as it contributed to Sandy’s record 13-foot coastal surge that flooded substantial sections of New York and New Jersey. These events would not have been as severe in a world without warming.

But herein lies the crux—we no longer live in a world without warming. Given that 1985 was the last year with temperatures below the 20th century average, and 2000-2010 was the hottest decade on record, it has become impossible to say for certain that any given storm is free from the influence of our warmed world.

While contrarians may dislike it when activists or actors like George Clooney point out the linkage between climate change and extreme weather, the bottom line is this: climate change makes tropical storms more damaging. Not only through increased wind speed and rainfall, but most notably through rising sea levels. This means greater damage and loss of property and life. [more]

Super Typhoon Haiyan: Realities of a Warmed World and Need for Immediate Climate Action



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