New study indicates sea level can rise 1 m in 50 years

7 thoughts on “New study indicates sea level can rise 1 m in 50 years”

  1. An interesting study with some big unknowns and conflicting results…

    From the paper…

    “our ~ +1 mMIS 5a highstand conflicts with reconstructions from raised coral reefs from uplifting coastlines (such as Haiti, Barbados, and New Guinea), which suggest that MIS 5a eustatic sea level was anywhere from 7 m (one “Greenland equivalent”) to 30 m (four “Greenland equivalents”) below present sea level (2, 3, 11, 12). Lower-than-present sea levels at
    ~80 ka have also been inferred from submerged speleothems from Grand Bahama Island (13) and coral reefs on the Florida Keys (14).”

    “We therefore consider the simple interpretation of our data that eustatic sea level during MIS 5a stood around +1 m relative to present sea level, implying less ice on Earth 81,000 years ago than today. Although this interpretation conflicts with the generally accepted eustatic sea-level curve based on the far-field sites of Barbados and New Guinea, it is consistent with a number of other estimates from around the world, including those from the Bahamas, the U.S. Atlantic Coastal Plain, Bermuda, Cayman Islands, and California (4, 6, 22–26) (Fig. 2B).

    Local uplift or subsidence at these rates is common.


  2. MarcH: You are selectively quoting parts of the paper to try and muddy the issue. I’ll quote this statement from the paper instead:

    These rates of sea-level change nominally approach 20 m per thousand years (ky), which is comparable to the meltwater pulses of the last major deglaciation (21) and almost 30 times larger than the largest observed or predicted rates of GIA (15).

    Local uplift or subsidence is not common at this rate.


  3. J Roff, The issue is a very muddy one. The rate is not spectacular. Check this reference for instance:

    Glacio-Isostasy: New Data from West Greenland and Geophysical Implications

    “The initial uplift rate of about 105 m per 1,000 yr is the highest reported for Greenland. The other curve represents a zone ∼50 km west of the present ice sheet, where 75 ± 5 m of postglacial uplift began ∼7,300 yr B.P. at an initial rate of about 60 m per 1,000 yr.”

    105 m per 1,000 yr now that’s moving.


  4. I’ve been looking at a SL reconstruction that covers this period by Arz et al. From 82800 BP to to 78400 BP, SLR is about 42 meters. That’s about a meter per century – or half of what the article says. There’s a period of no rise, spanning over 1,000 years, however. So it could be a bit more than 1 meter/century.

    My two most recent posts are on this topic.


  5. Im waiting for the rebuttal of this article or something like it to appear on either Bolt or Akermans blog.

    Bolt: “New study by (Dorale et al 2010) grossly exagerates sea level rise stating that we could have 1M sea level rise in 50 years by next week! Exxon reports its more like -1M . I also have this paper from (Schmuck et al 2010) from whats up with that blog stating that even if we DID have that much sea level rise, then it could only be beneficial & we need to adapt. Sea level rises will only be MORE beneficial, as fish will have more water to live & breed in & boats & ships can sail over dangerous reefs with ease & it will absorb even MORE Co2”

    Bolt fan: “this is an outrage Andrew! Thankyou for your excellent journalistic skills in exposing this & telling us the truth!”

    Akerman: “I spoke to Dorale by phone tonight & he/she assures me that his/her main aim was to de-industrialise the west, get more grants, destroy capitalism & will say anythng to achieve this..Oh & he/she assures me also, that they like to wear a gimp suit”.

    Akerman fan: “I knew it!! more proof of the conspiracy! The game is over warmists!!!!!!!”


  6. Ahaha John, nice story in that link, I hadnt seen it.I’ve just recently found this great blog.

    “this sighting is proof”…..Gold
    “overturns that IPCC “report” and the thousands of “scientific studies”……Gold
    “this news comes on top of the fact that it got really freaking cold in my town a few weeks ago.”…..Platinum

    Like Lee Bowman from Bondi. I believe his phones are running hot from all of the scientists around the world ringing him in relief & elation that they no longer have to slave over satelite data or check gauges to measure sea level rise, they can just ring Lee Bowman for the latest measurements.

    Scientists schmientists, they dont even LIVE there!!! How could they possibly know if there was any change? Lee says there is “no change” & I take the man on the grounds word over the guy with the bunsen burner & maniacal grin on his face any day.

    Its just forehead slapping stuff to see some of the stories that appear in the blogosphere & the stuff that comes out of newscorp is just mind blowing ignorance. Yet they never question it. In fact they hold science by opinion, blog & petition in very high regard it seems.

    The dunning-kruger effect, mixed with a bit of confirmation bias, throw in a dash of political ideology & presto, climate change skeptic.


Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s