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.

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.