NASA Scientists Paint Stark Picture of Accelerating Sea Level Rise

A NASA panel yesterday announced widely reported finding that global sea levels have risen about three inches since 1992, and that these levels are expected to keep rising as much as several more feet over the next century -- on the upper end of model-based predictions that have been made so far. From the Sydney Morning Herald piece linked above: NASA says Greenland has lost an average of 303 gigatons [of ice] yearly for the past decade. Since it takes 360 gigatons to raise sea level by a millimetre, that would suggest Greenland has done this about eight times over just in the last 10 years or so. "People need to be prepared for sea level rise," said Joshua Willis, an oceanographer at NASA's Jet Propulsion Laboratory in La Cañada Flintridge. "It's not going to stop."

Comments

That would be penny wise and pound foolish

[FreeUser]

If this is actually a credible report, then the U.S. government needs to stop funding the rebuilding/construction of areas that are CURRENTLY under sea level like New Orleans and the dikes and berms around it. No more federal funds of any kind for regions currently under water!

By that logic we should just write off large swathes of the Netherlands. Dykes and berms work just fine, and we have the engineering means to keep portions of land we consider valuable dry even if the waters rise 10 or 20 feet. New Orleans would fit in this category in my opinion. It is a unique part of American heritage and a cultural gem (one of not-so-many the US possesses), well worth the investment of Federal dollars to keep around.

Not to mention that it is by far less expensive to retain land by shoring up or building new dykes, than it is to reclaim land already submerged. Not as cheap as ditching it of course, but in places where it is worthwhile (New York City, Hoboken, New Orleans, Holland, and various other places) it is much smarter to keep existing places dry than leave them to be inundated and then realize our mistake later and either lose them forever, or pay even more to reclaim them.

measured data [Re:Oversimplification]

[Geoffrey.landis]

Scientists dumb down data so science magazines can understand. Mainstream media further simplifies for the general population to understand. Even the summary states that this guestimation is based on a different guestimation of how many gigatons of ice have melted. If 360 gigatons of ice on land melt, it is estimated that it will raise the sea level by 1 mm. However, if the ice is already in the sea, it won't raise the sea level. The dumbed down story doesn't say how much of the missing ice was already in the ocean vs on the land, so we can't use numbers to say that sea level has risen 8mm over that decade.

The 303 gigaton number was for Greenland ice. Greenland ice is on land.

Since we are talking about NASA, why don't they measure the actual sea level instead of playing this numbers game?

They do. Read the linked articles. These are satellite measurements of sea level.

http://www.jpl.nasa.gov/news/n...
http://www.nasa.gov/risingseas...

I can tell from the comments

[HangingChad]

I can tell from the comments most of you don't live near the ocean. Down here in South Florida it's already making an impact. There are storm drains that flow water during high tide up and down the coast and boat docks underwater. Miami is worse. Hallendale Beach has five of their seven fresh water pumps closed because of salt water intrusion.

The real problem that no one is talking about is what happens when Miami gets nailed by a Cat 4 or 5 hurricane? We're going to have boats washing up on I-95. Do we spend the money to rebuild Miami just to have it flood 40 years later? Or when it gets nailed by another hurricane?

Re:"...need to be prepared..."

[bunratty]

One foot of sea level rise is not a loss of one foot of beach, unless the beach has a 45-degree angle. A few feet of sea level rise is going to displace many millions of people.

Re:3mm is the key

[Sique]

And now we compare that with the tax breaks, subsidaries and profits for the oil and coal industry between 1989 and 2009. And suddenly we are talking about pocket change. They get $2.4 billion per year in tax breaks only, while the whole money spent on climate research (which includes weather forecasts, which people like to forget) is just $1.6 billion per year. And this does not include the $6.5 billion in subsidies per year for oil and gas. And the $14 billion per year subsidies for Nonconventional fuels (e.h. oil from shale, from tar sands, coal seams and coal based synthetic fuels). And the tax break of about $1 billion per year by declaring Coal Royalty Payments as Capital Gains.

So where are the government founded profits, in launching satellites and building expensive computers for weather forecasts and climate modelling at $1.6 billion per year and which aren't profitable to sell, or in mining coal and oil and gas for $25 billion in subsidies, and which you can then sell for a profit on the market?

So whoever brings up the financial gain argument against the climate scientists, has to honestly conclude that the financial interest on the anti-climate-scientist-stance is much more plausible. If you want to follow the money, the big stinking trace goes to oil and gas, and not to climate research and renewables.