On Sea Level Rise, More Experts Lean Toward High End

Flooding on the Virginia coast. <a href="http://www.flickr.com/photos/usfwsnortheast/6097306728/sizes/l/in/photostream/">U. S. Fish and Wildlife Service - Northeast Region</a>/Flickr

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If you want to imagine what the future, climate-changed world will look like, one of the biggest questions is by how much, exactly, the sea levels will increase. Rising tides have already become one of the most prominent climate change impacts, threatening coastal communities from Virginia to Palau and amplifying the damage of storms like Sandy. Estimates vary: 2007’s Intergovernmental Panel on Climate Change report pegged the figure at somewhere around a foot by 2100, while a December study from NOAA went as high as 6.6 feet. But a swath of recent studies put the estimate at around three feet, including a report out Sunday in Nature Climate Change. From NBC:

Melting glaciers in Antarctica and Greenland may push up global sea levels more than 3 feet by the end of this century, according to a scientific poll of experts that brings a degree of clarity to a murky and controversial slice of climate science. 

Such a rise in the seas would displace millions of people from low-lying countries such as Bangladesh, swamp atolls in the Pacific Ocean, cause dikes in Holland to fail, and cost coastal mega-cities from New York to Tokyo billions of dollars for construction of sea walls and other infrastructure to combat the tides.

“The consequences are horrible,” Jonathan Bamber, a glaciologist at the University of Bristol and a co-author of the study, [said].

While efforts to stem the rising sea, like reducing greenhouse gas emissions from burning fossil fuels, are always worth pursuing, in light of the mounting evidence for large-scale changes it seems prudent for more coastal cities to take a lead from places like New York and start preparing for a closer coastline.

More MotherJones reporting on Climate Desk

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SIX TRUTHS

Reclaiming power from those who abuse it often starts with telling the truth. And in "This Is How Authoritarians Get Defeated," MoJo's Monika Bauerlein unpacks six truths to remember during the homestretch of an election where democracy, truth, and decency are on the line.

Truth #1: The chaos is the point.

Truth #2: Team Reality is bigger than it seems.

Truth #3: Facebook owns this.

Truth #4: When we go to work, we're in the fight.

Truth #5: It's about minority rule.

Truth #6: The only thing that can save us is…us.

Please take a moment to see how all these truths add up, because what happens in the weeks and months ahead will reverberate for at least a generation and we better be prepared.

And if you think journalism like Mother Jones'—that calls it like it is, that will never acquiesce to power, that looks where others don't—can help guide us through this historic, high-stakes moment, and you're able to right now, please help us reach our $350,000 goal by October 31 with a donation today. It's all hands on deck for democracy.

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