Expert Voices

Michael Mann: Super Typhoon Haiyan and the Realities of a Warmed World (Op-Ed)

Nyberg: Super Typhoon Haiyan from ISS
NASA astronaut Karen Nyberg took this photo of Super Typhoon Haiyan from her home on the International Space Station on Nov. 9, 2013, one day after Haiyan devastated the Philippines. (Image credit: NASA via Karen Nyberg/@Astro_KarenN)

Michael Mann is Distinguished Professor of Meteorology at Penn State University and was recognized in 2007, with other IPCC authors, for contributing to the award of the 2007 Nobel Peace Prize for his work as a lead author on the "Observed Climate Variability and Change" chapter of the Intergovernmental Panel on Climate Change (IPCC) Third Scientific Assessment Report. This article is adapted from one that appeared on Mann contributed this article to LiveScience's Expert Voices: Op-Ed & Insights.

It is with a heavy heart and a respectful hand that I write this. Super Typhoon Haiyanhas only just passed, and the devastation cannot yet even be fully understood. (With that in mind, please consider a donation to an assisting charity, such as the Philippine Red Cross.)

But a donation 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 global climate talks — the Conference of Parties (COP) of the United Nations Framework Convention on Climate Change (UNFCCC). As he tearfully pleaded with the delegation gathered in Warsaw, Poland, he powerfully pressed them for action and challenged those who stand in the way of climate-influencing reforms. Saño 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 famines as they destabilize weak nations and of unprecedented hurricanes and typhoons that have pounded the United States 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 storm's 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.

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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 the span from 2000 to 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.

There are those who suggest that it would be easier to simply retreat from the coasts that get battered by these storms. But I imagine many people would agree with Yeb Saño, who said:

"We can take drastic action now to ensure that we prevent a future where super typhoons are a way of life, because we refuse, as a nation, to accept a future where super typhoons like Haiyan become a fact of life. We refuse to accept that running away from storms, evacuating our families, suffering the devastation and misery, having to count our dead, become a way of life. We simply refuse to."

Let that call echo, and be heard in response to those who would insist on waiting for the next storm to take action.

Mann's most recent Op-Ed was "Climate-Change Deniers Must Stop Distorting the Evidence." Mann is author of two books, "The Hockey Stick and the Climate Wars: Dispatches from the Front Lines" (Columbia University Press, 2012), which will soon to be available in paperback with an update and a new guest foreword by Bill Nye "The Science Guy", and "Dire Predictions: Understanding Global Warming" (DK Publishing, 2008). You can follow him on Twitter: @MichaelEMann. The views expressed are those of the author and do not necessarily reflect the views of the publisher. This version of the article was originally published on Live Science.

Michael E. Mann

Michael E. Mann is presidential distinguished professor and director of the Center for Science, Sustainability and the Media at the University of Pennsylvania. He is author of the new book "Our Fragile Moment: How Lessons from Earth's Past Can Help Us Survive the Climate Crisis." (PublicAffairs, 2023) and "The New Climate War: The Fight to Take Back Our Planet" (PublicAffairs, 2021).