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We Are All From New Orleans Now: Climate Change, Hurricanes, And The Fate Of America’s Coastal Cities, By Mike Tidwell

Reposted from THE NATION

The presidential candidates decided not to speak about climate change, but climate change has decided to speak to them. And what is a thousand-mile-wide storm pushing eleven feet of water toward our country’s biggest population center saying just days before the election? It is this: we are all from New Orleans now. Climate change—through the measurable rise of sea levels and a documented increase in the intensity of Atlantic storms—has made 100 million Americans virtually as vulnerable to catastrophe as the victims of Hurricane Katrina were seven years ago.

Arriving atop fantastically warm water and aided by a full foot of sea-level rise during the last century, Hurricane Sandy is just the latest example of climate change’s impact on human society. Unless we rapidly phase out our use of fossil fuels, most Americans within shouting distance of an ocean will—in coming years—live behind the sort of massive levees and floodgates that mark Louisiana today.

The New York Academy Sciences has already begun examining the viability of three massive floodgates near the mouth of New York Harbor, not unlike the Thames River floodgate that protects London today. Another floodgate has been proposed for the Potomac River just south of Washington, fending against tsunami-like surge tides from future mega storms. Plus there will be levees—everywhere. Imagine the National Mall, Reagan National Airport and the Virginia suburbs—all well below sea level—at the mercy of “trust-us-they’ll-hold” levees maintained by the Army Corps of Engineers.

Oceans worldwide are projected to rise as much as three more feet this century—much higher if the Greenland ice sheet melts away. Intense storms are already becoming much more common. These two factors together will in essence export the plight of New Orleans, bringing the Big Easy “bowl” effect here to New York City and Washington, as well as to Charleston, Miami, New York and other coastal cities. Assuming we want to keep living in these cities, we’ll have to build dikes and learn to exist beneath the surface of surrounding tidal bays, rivers and open seas—just like New Orleans.

Meanwhile, it’s not our imagination that hurricanes have grown more ferocious than in the past. Multiple scientific studies in the past few years have found that rising sea-surface temperatures linked to global warming are causing an increase in the number of stronger hurricanes. Sandy, right now, is approaching the East Coast atop Atlantic sea-surface temperatures a full five degrees Fahrenheit above normal. One study by the Massachusetts Institute of Technology concluded that hurricane wind speeds have doubled in the past thirty years. This may account for the fact that among the six most powerful hurricanes recorded in the Atlantic Basin—going back 150 years—three occurred over fifty-two days in 2005: Katrina, Rita and Wilma. And Sandy, as measured by its area of influence, is now the biggest storm ever recorded in the Atlantic.

Higher sea levels create other conditions that will only enhance hurricanes. In 1985, Hurricane Gloria made landfall north of New York Harbor. As a Category 2 storm, it could have had a serious surge tide. But it was a relative dud, causing only minor flooding. New York got lucky because the storm struck at maximum low tide. But with three feet of sea-level rise, we will be creating what amounts to permanent high-tide conditions in the New York region and everywhere else, guaranteeing that future storms like Sandy will become surge-tide heavyweights.

What can we do? Three major options: (1) abandon our coastal cities and retreat inland, (2) stay put and try to adapt to the menacing new conditions or (3) stop burning planet-warming fossil fuels as fast as possible.

Retreat, of course, is no one’s first choice. But adapting means committing fully to the New Orleans model. It means potentially thousands of miles of levees and floodwalls across much of the East Coast. And that’s just to handle the rising sea. For hurricane surge tides, the only solution might be to build those major floodgates across New York Harbor, the Potomac Rivers and elsewhere. But are we truly ready to become New Orleanians, casting our lot behind ever-higher, unsustainable walls? Once we commit to fortified levees and massive floodgates, there’s no turning back. It’s an all-or-nothing proposition, as New Orleans has graphically demonstrated.

In truth, we must combine some level of adaptation with the third option: switching away from fossil fuels and onto clean energy. Clean energy is less expensive, less risky and overall much better for us. It’s the option that treats the disease of global warming, not just the symptoms. Only by dramatically reducing greenhouse gas pollution—by putting a price on carbon fuels and ushering in real gains in wind and solar power and efficiency—can we slow the sea-level rise and potentially calm the growth in hurricane intensity.

Perhaps now, after seeing the full wrath of Sandy, the next president will move from total silence to real action.

2 comments to We Are All From New Orleans Now: Climate Change, Hurricanes, And The Fate Of America’s Coastal Cities, By Mike Tidwell

  • Makati1

    Since we will not voluntarily use less carbon energy if we can afford it, and we cannot possibly switch to enough ‘green’ energy to make a difference, we can either pay the price and abandon our coastal cities…(Not likely)…or waste trillions of dollars trying to keep Mother Nature at bay. Seems that a total collapse of the economy so we cannot afford to keep using carbon energy is the correct answer.

  • Martin

    Maktat1, unless we are on the cusp of a radical change in our collective will and understanding we might have a chance.
    Otherwise I think we are lost and we are just marking time.

    For me this is recent. Back in the latter 1970’s I was in my teens and we were so optimistic. If something was wrong we went out and changed it. Apartheid? nuclear war? We took to the streets and I did too. 1981 was the last overseas sporting event South Africa had of note in New Zealand. In 1994 we rejoiced at the fall of Apartheid. In 1986 we went nuclear free falling out with Washington DC along the way. I knew in my heart many Americans understood what we were doing.

    It all arose out of the social renaissance of the late 1960s. It seemed everyone marched about the Vietnam war.
    The marches of my youth were big [for New Zealand] 2000 on one against the SIS getting more spying powers back in ’77. Recently it didn’t raise a squeak when the asked for more.

    Or marches are small 400-500 is a good turn out now. During the 1981 springbok tour my test day unit had 500 people in it in an overall action of 10,000 participants.

    Today there are brave voices on the street about climate change or the mid east wars. But way too few. Should we try to continue for a more and more fleeting change or just localise and ride out what comes?

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