11 Alarming facts about Sea-level Rise

Discussion in 'Environment & Conservation' started by Taxonomy26, Jul 23, 2016.

  1. Taxonomy26

    Taxonomy26 Banned

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    The perceived air temp may not be rising in "Lockstep" with CO2..
    but the Rate of Sea Level increase is much faster.
    And I think the below article is conservative: sea level rise rate could accelerate far faster than predicted. Perhaps Double or more the current rate.
    The most aggressive NOAA prediction has it rising near 8 Feet by the end of the Century.

    Would you write a 30 mortgage on a Miami property?
    I wouldn't... and in a few years, Banks won't be either. You heard it here.

    11 alarming facts about sea-level rise

    RUSSELL MCLENDON
    February 26, 2016
    http://www.mnn.com/earth-matters/climate-weather/blogs/facts-about-sea-level-rise

    The ocean is coming for us. Global sea levels are now rising by 3.4 millimeters per year, up from an average rate of 1.4 mm per year last century. In just 80 years, the ocean could be a full 1.3 meters (4.3 feet) taller than it is today.

    That kind of planetary sea change can be hard to fathom — unless you live in a low-lying place like Miami, the Maldives or the Marshall Islands, where the effects of sea-level rise are already apparent. But within just a few decades, the problem will become unavoidable in major coastal cities around the world, from New Orleans, New York and Amsterdam to Calcutta, Bangkok and Tokyo.

    We all know why this is happening. Rising seas are one of the most salient effects of man-made climate change, triggered by thermal expansion of seawater as well as the influx of melting glaciers. Yet many people still see it as a distant risk, failing to grasp how (relatively) quickly the sea is swallowing shores worldwide. And since half of all humans now live within 60 kilometers (37 miles) of a coast, this isn't a niche issue.
    [......]
    2. Not only are sea levels rising; the rate of their rise is rising.

    Average global sea-level rise is now 3.41 mm per year, but the rate varies widely by location. (Image: NASA GSFC)
    On average, sea levels rose by 1.4 mm from 1900 to 2000.
    The yearly pace had surpassed 3 mm by 2010, and now it's up to 3.4 mm per year.

    [.....]

    I see no reason this couldn't accelerate to 10/12 mms/Half-inch or More in 10/20 years.
    +
     
  2. sawyer

    sawyer Well-Known Member Past Donor

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    Remember Paul Harvey? " And now for the rest of the story".


    Study Validates NOAA's Analysis of 2010 Russian Heat Wave: No Climate Change Connection »

    Sea Levels Higher During Medieval Warming Period - Research Shows Current Sea Level Rise Began By 1750 AD
    Read here and here. There is an excellent and fascinating post over at Judith Curry's site regarding historical sea levels. It's part 1 of a series by Tony Brown. From one of his linked documents comes the chart on the left, and the chart on the right from a previous C3 post on sea levels. (click on images to enlarge)
    MWP Sea Levels Modern sea level change co2

    Tony does an analyisis of sea levels prior to the pre-Medieval Period, pulling information from a wide assortment of historical resources. Per the documentation he reviewed, there is strong evidence that both the Roman/Byzantine and prior periods had sea levels that exceeded the current level.

    "“The North Sea had a nasty little jump between 350 and 550AD, flooding the coasts of northern Europe with an extra 2 feet of water and sending its inhabitants — folk known as Angles and Saxons — fleeing (although “conquering” might be the better word) into ill-prepared Roman territories. At the start of this rise, the areas we know as the Fens were a well-settled part of Roman Britain ruled from the town of Duroliponte (Cambridge) by its native people, the Christianized Romano-Celtic Iceni. Then the sea level rose, and history’s curtain went down for two centuries.”.....At the old shore the Etang of Vendres, near the mouth of the Aude, are the ruins of a Roman Therme of the 1st or 2nd century A.D. (locally called the temple of Venus). There the walls have been washed out by waves so that they now have a deep double notch about 1.80 m above present sea level..."

    "So notwithstanding the statements of the IPCC AR4 who assert a sea level status quo from ancient until modern times, there are many studies that point to a picture of relatively static sea levels after the initial Holocene rise. These then show that some 3000 years ago there was a further inundation (think Lyonesse in Cornwall) and in early Roman times levels were somewhere around current levels. Levels then rose significantly through the Roman period peaking around the 700 AD Byzantine period at levels higher than today..."

    At the end of part 1 on Curry's site, Tony makes reference to how Science Daily edited out key information from a study they reported on thus leaving their readers with an impression that previous sea levels were not higher. Interesting. Confirms why today's science journalists are no longer easily trusted."

    http://www.c3headlines.com/2011/07/...ows-current-sea-level-rise-began-by-1750.html
     
  3. Taxonomy26

    Taxonomy26 Banned

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    Incoherent Response,
    I did Not post on the Russian Heat Wave of 2010 or what caused it.
    WTF!
    But rather on the Wordwide acceleration of Sea Level Rise.
    Untouched by you.

    When I see there's a reply from you, I know it's either one non-responsive sentence (most probable), or a Link/article with with no relevance to the topic.
    But thx for the bump.
    +
     
  4. sawyer

    sawyer Well-Known Member Past Donor

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    Obviously you didn't read the link which was about world weather, you just read the headline and ran for cover.
     
  5. Hoosier8

    Hoosier8 Well-Known Member Past Donor

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    Have you ever checked where the alleged acceleration comes from? You should and you would find out it occurs because of tacking on satellite data to tide guage data yet tide guage data shows no acceleration. The satellite data has to be run through a 'model' and the tide guage data is raw data. Also only the tide guage data is used for coastal planning.

    Tide guage data shows no acceleration over 100 years to present.
     
  6. JakeJ

    JakeJ Well-Known Member Past Donor

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    Yes, clearly this is absolute proof that humans industrialized hundreds of millions of years ago. The sea level has changed as much as over 100 feet by geological records. Since it is indisputable fact that only humans can cause any climate and sea level change by creating carbon dioxide, this is 100% proof that humans first industrialized 3 billion years ago.

    :eyepopping:
     
  7. JakeJ

    JakeJ Well-Known Member Past Donor

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  8. Taxonomy26

    Taxonomy26 Banned

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    :^)

    https://www.skepticalscience.com/sea-level-rise.htm

    How much is sea level rising?
    [......]
    Gavin Schmidt investigated the claim that tide gauges on islands in the Pacific Ocean show no sea level rise and found that the data show a Rising sea level trend at Every single station. But what about global sea level rise?

    Sea level rises as ice on land melts and as warming ocean waters expand. As well as being a threat to coastal habitation and environments, sea level rise corroborates other evidence of global warming

    The blue line in the graph below clearly shows sea level as rising, while the upward curve suggests sea level is rising faster as time goes on. The upward curve agrees with global temperature trends and with the accelerating melting of ice in Greenland and other places.
    [......]

    [​IMG]

    Other skeptic arguments about sea level concern the validity of observations, obtained via tide gauges and more recently satellite altimeter observations.

    Tide gauges must take into account changes in the height of land itself caused by local geologic processes, a favorite distraction for skeptics to highlight. Not surprisingly, scientists measuring sea level with tide gauges are aware of and compensate for these factors. Confounding influences are accounted for in measurements and while they leave some noise in the record they cannot account for the observed upward trend.

    Various technical criticisms are mounted against satellite altimeter measurements by skeptics. Indeed, deriving millimeter-level accuracy from orbit is a stunning technical feat so it's not hard to understand why some people find such an accomplishment unbelievable. In reality, researchers demonstrate this height measurement technique's accuracy to be within 1mm/year. Most importantly there is no form of residual error that could falsely produce the upward trend in observations.

    As can be seen in an inset of the graph above, Tide gauge and Satellite altimeter measurements Track each other with Remarkable Similarity.
    These two independent systems Mutually Support the observed trend in sea level.
    If an argument depends on skipping certain observations or emphasizes uncertainty while ignoring an obvious trend, that's a clue you're being steered as opposed to informed. Don't be mislead by only a carefully-selected portion of the available evidence being disclosed.

    Current sea level rise is after all NOT Exaggerated, in fact the opposite case is more plausible. Observational data and changing conditions in such places as Greenland suggest if there's a real problem here it's underestimation of future sea level rise. IPCC synthesis reports offer conservative projections of sea level increase based on assumptions about future behavior of ice sheets and glaciers, leading to estimates of sea level roughly following a linear upward trend mimicking that of recent decades. In point of fact, observed sea level rise is already above IPCC projections and strongly hints at acceleration while at the same time it appears the mass balance of continental ice envisioned by the IPCC is overly optimistic (Rahmstorf 2010 ).​

    And the above graph doesn't even include the measured bump in acceration since 2010.

    And I might add...
    Where do you think the Ice/Water from the Rocky Coast (or interior) of Greenland we can see more of every year is going?
    Not to mention a myriad of other Melt sites worldwide.
    +
     
  9. Hoosier8

    Hoosier8 Well-Known Member Past Donor

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    Still using the graph with the satellite data tacked on eh? No tide gauge, not one, show any acceleration. In fact, when all the gauges around Kiribati are averaged, there is little rise. When you try to get a global mean, you have to run them through a model. BTW, there is no bump in acceleration in 2010.

    [​IMG]

    https://eyesonbrowne.wordpress.com/tag/pacific-sea-level/
     
  10. jc456

    jc456 New Member

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    where is the water coming from to increase sea levels?
     
  11. waltky

    waltky Well-Known Member

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    Could turn it into submarine training camp...
    :wink:
    Parris Island Under Water? One Study Says It Could Happen
    Aug 22, 2016 | Marine Corps Recruit Depot Parris Island sits on about 8,000 acres of land. A fifth of that, according to one study, could be under water by 2050.
     
  12. Hoosier8

    Hoosier8 Well-Known Member Past Donor

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    Could, might, maybe, etc. are all weasel words and you will find them peppering almost all catastrophic climate claims.
     
  13. jc456

    jc456 New Member

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    what will be the water source that drives that event?
     
  14. AFM

    AFM Well-Known Member Past Donor

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    Those adjectives are the fuel for the application of the precautionary principle which generally does nothing more than reduce economic growth and the rate of the increase in the standard of living and consequently reduces the ability of humans to adapt to their environment and climate variability. But it does create gov power and bureaucracies to administer bogus policies based on "it's unlikely but if it happens". Sadly it seems more people have been duped into believing that global warming is a threat than not.
     
  15. waltky

    waltky Well-Known Member

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    Space Fence could be regularly swamped by rising seas...
    :omg:
    Report: US Ignored Rising-sea Warnings at Radar Site
    Oct 18, 2016 — The U.S. Air Force is spending nearly $1 billion to build a radar installation that will help keep astronauts and satellites safe by tracking pieces of space junk as small as a baseball. That is, if global warming doesn't get in the way.
    See also:

    US Warship to Visit New Zealand and End 30-Year Stalemate
    Oct 18, 2016 — A U.S. Navy warship will visit New Zealand next month for the first time since the 1980s, ending a 30-year-old military stalemate between the countries that was triggered when New Zealand banned nuclear warships.
     

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