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What is now the post-tropical cyclone Sandy, as seen by the NASA/NOAA weather satellite GOES-13 at 06:02 Eastern US time, on October 30, 2012:
[Click for a much larger version, or get the 3600 x 3000 pixel image.]
Like anyone not on the east coast, I have been watching this event unfold from the sidelines. Twitter has been an amazing source of information (and misinformation, in general quickly debunked). I saw links to a video of transformer exploding on 14th street, ubiquitous flooding, cars floating in water, and so much more. There were so many pictures, real and fake, that Alexis Madrigal at The Atlantic wrote a great article on how to distinguish between them.
The pictures have been powerful, but the stories have been amazing. I've seen messages from friends who are safe offering - publicly - their apartments and houses for strangers who need a place to stay. People rescuing others from the flooding. Calls for watching out for neighbors, relatives, even pets, with responses. The most moving, perhaps, is of nurses at the NYC hospital carrying infants down nine flights of stairs in the dark after a generator went out.
That one will haunt me for a long, long time.
A question I've seen a lot is: what was the role of global warming in all this? Christopher Mims wrote a short, measured analysis of this that matches my thinking almost exactly. Basically, it's hard to know the precise role of global warming in the formation, movement, power, and damage caused by Sandy, but what we do know is that the Atlantic had warmer temperatures for longer than usual - conditions consistent with global warming - and that is a source of both energy and water for the hurricane. There is some thought that the huge arctic sea ice melt this year may have contributed to the abrupt westward turn of the hurricane into the coast. Correlation isn't necessarily causation; the details are difficult to calculate and we may never know.
But we do know that something looking very much like this has been predicted by climate scientists. This may be an unusual event - after all, the nor'easter timing was important, and the spring tides from the full Moon contributed as well - but it's hard to say just how unusual it will be in the future. Warmer waters lead to an extended hurricane season which can stretch into the time when nor'easters are more likely to occur. These circumstances loaded the dice. And as Mims so aptly phrased it, the reality of global warming means "climate change, by definition, is present in every single weather event on the planet."
There has been some political opportunism with this storm as well. I am not a fan of such parasitism; latching on to an opportunity under the thinnest of pretense to trump a partisan view. However, let me be clear: we just had the world's biggest metaphor come ashore in the United States. Years of outright climate change denial and faux skepticism will hopefully be shaken by this event. Sea ice melting happens far away; droughts, fires, shifting weather is unpredictable and difficult to grasp; statistical graphs are easily manipulated by special-interest groups and generally difficult to interpret anyway. But a hurricane a thousand miles across doing tens of billions of dollars of damage and causing untold chaos is more than a wake up call.
It should be a shot of adrenaline into the heart.
My own heart goes out to everyone who has had to deal with this storm, and I am uplifted by the stories of heroism, self-sacrifice, and selflessness. I am a skeptic and a realist, but there is also a streak of optimism in me. When faced with extraordinary challenge, I will always hope that humans will rise to match it.
Image credit: NOAA/NASA GOES Project