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Could a little warming raise oceans by 20 feet?

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  Could a little warming raise oceans by 20 feet? Sam Wormley <swormley1@gmail.com> - 2015-07-14 15:16 -0500
    Re: Could a little warming raise oceans by 20 feet? jimp@specsol.spam.sux.com - 2015-07-14 20:47 +0000
    Re: Could a little warming raise oceans by 20 feet? "hanson" <hanson@quick.net> - 2015-07-15 15:21 -0700
    Re: Could a little warming raise oceans by 20 feet? benj <nobody@gmail.com> - 2015-07-16 16:37 -0400
      Re: Could a little warming raise oceans by 20 feet? noTthaTguY <abu.kuanysh05@gmail.com> - 2015-07-16 14:13 -0700

#507077 — Could a little warming raise oceans by 20 feet?

Could a little warming raise oceans by 20 feet?
> http://arstechnica.com/science/2015/07/could-a-little-warming-raise-oceans-by-20-feet/

> Still, it's rather important we try to find out. Melting lots of ice
> takes a long time, and we're still not sure how much additional
> melting we've already committed to. An understanding of this
> relationship in the past can help us understand both that and where
> we're likely to be headed. As the authors put it, "Given the recent
> increases in greenhouse gases and global mean temperature, the
> present ice sheets are out of equilibrium with the climate, raising
> important questions regarding their potential future contribution to
> sea-level rise."
>
> The authors looked at three different warm periods. One was the
> Mid-Pliocene warm period, which occurred three million years ago,
> when atmospheric CO2 levels were similar to their present values.
> Most climate records suggest temperatures were a few degrees warmer
> than present (between 1 and 4 degrees Celsius), but some Arctic
> records suggest elevated temperatures of up to 8 degrees Celsius,
> which could have severe consequences for the Greenland ice sheet.
> Coastal records suggest sea levels rose by more than 15 meters, while
> models of the ice sheets in Greenland and Antarctica suggest those
> contributed 13m to this rise.
>
> The second period considered was an unusually long interglacial
> period about 400,000 years ago. Greenhouse gases reached levels
> similar to those found in preindustrial times, while temperature
> estimates suggest a climate that was 1 to 2 degrees Celsius warmer
> than present. But pollen suggests that southern Greenland was covered
> in a spruce forest, and sea level estimates suggest a rise of at
> least 6 meters—the source of the 20 foot rise that made the
> headlines.
>
> Another interglacial, coming about 120,000 years ago, saw global
> temperatures only slightly warmer than present, but the Arctic and
> Antarctic appeared to be unusually warm (in the area of 5 degrees
> Celsius). Sea levels again reached at least six meters above present.
> And some records suggest fluctuations of a meter or so occurred once
> the high point was reached.
>
> So, *most of these estimates suggest* we're in for a lot higher sea
> level given that we're committed to emitting enough carbon to easily
> surpass the temperatures involved in the past warm periods. But it's
> not entirely that simple. Those warm periods were caused by changes
> in the pattern of sunlight that brings more to the Northern
> Hemisphere—potentially explaining the high Arctic temperatures and
> the severe impacts on Greenland. (That doesn't, of course, explain
> the evidence of high Antarctic temperatures.) And, as noted above,
> the error bars are still quite large.

   Mom always said -- don build in the flood plain or near sea level.




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#507085

Sam Wormley <swormley1@gmail.com> wrote:
> Could a little warming raise oceans by 20 feet?

Not very likely; the last ice age is mostly over.


-- 
Jim Pennino

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#507370

"Sam Wormley" <swormley1@gmail.com> wrote :
> Swine Glazier reber g=emc^2 wrote:
>> Sam Wormley wrote:
>>> Could a little warming raise oceans by 20 feet?
>>>> http://arstechnica.com/science/2015/07/could-a-little-warming-raise-oceans-by-20-feet/
>>>> Still, it's rather important we try to find out. And, as noted above, 
>>>> the error bars are still quite large.
>>>
>>>     Mom always said -- don build in the flood plain or near sea level.
 >>
>> 20 feet never 20 inches possibly 2 inches yes  TreBert
>>
>   Sounds like penis measurements....
>
of Swine Glazier's new foreskin that he bragged about?

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#507527

On 07/16/2015 12:54 PM, Enomis Skating wrote:
> Il giorno martedì 14 luglio 2015 22:16:54 UTC+2, Sam Wormley ha scritto:
>> Could a little warming raise oceans by 20 feet?
>>> http://arstechnica.com/science/2015/07/could-a-little-warming-raise-oceans-by-20-feet/
>>
>>> Still, it's rather important we try to find out. Melting lots of ice
>>> takes a long time, and we're still not sure how much additional
>>> melting we've already committed to. An understanding of this
>>> relationship in the past can help us understand both that and where
>>> we're likely to be headed. As the authors put it, "Given the recent
>>> increases in greenhouse gases and global mean temperature, the
>>> present ice sheets are out of equilibrium with the climate, raising
>>> important questions regarding their potential future contribution to
>>> sea-level rise."
>>>
>>> The authors looked at three different warm periods. One was the
>>> Mid-Pliocene warm period, which occurred three million years ago,
>>> when atmospheric CO2 levels were similar to their present values.
>>> Most climate records suggest temperatures were a few degrees warmer
>>> than present (between 1 and 4 degrees Celsius), but some Arctic
>>> records suggest elevated temperatures of up to 8 degrees Celsius,
>>> which could have severe consequences for the Greenland ice sheet.
>>> Coastal records suggest sea levels rose by more than 15 meters, while
>>> models of the ice sheets in Greenland and Antarctica suggest those
>>> contributed 13m to this rise.
>>>
>>> The second period considered was an unusually long interglacial
>>> period about 400,000 years ago. Greenhouse gases reached levels
>>> similar to those found in preindustrial times, while temperature
>>> estimates suggest a climate that was 1 to 2 degrees Celsius warmer
>>> than present. But pollen suggests that southern Greenland was covered
>>> in a spruce forest, and sea level estimates suggest a rise of at
>>> least 6 meters--the source of the 20 foot rise that made the
>>> headlines.
>>>
>>> Another interglacial, coming about 120,000 years ago, saw global
>>> temperatures only slightly warmer than present, but the Arctic and
>>> Antarctic appeared to be unusually warm (in the area of 5 degrees
>>> Celsius). Sea levels again reached at least six meters above present.
>>> And some records suggest fluctuations of a meter or so occurred once
>>> the high point was reached.
>>>
>>> So, *most of these estimates suggest* we're in for a lot higher sea
>>> level given that we're committed to emitting enough carbon to easily
>>> surpass the temperatures involved in the past warm periods. But it's
>>> not entirely that simple. Those warm periods were caused by changes
>>> in the pattern of sunlight that brings more to the Northern
>>> Hemisphere--potentially explaining the high Arctic temperatures and
>>> the severe impacts on Greenland. (That doesn't, of course, explain
>>> the evidence of high Antarctic temperatures.) And, as noted above,
>>> the error bars are still quite large.
>>
>>     Mom always said -- don build in the flood plain or near sea level.
>
> My Mom (2 yr more than Bert) lives in central Italy near the sea
> (Adriatic) and there is a fine, light golden tinged sandy beach
> (~50 m, difference in level is ~1 m): when the sea eats even one
> meter (there are durable reference points) I could positively
> tell you.
>
> regards
> Angelo

So Angelo, as I understand it from "Professor" Wormley, global warming 
cause a sea rise of more than a meter years ago! So tell us when you 
noticed the beach was gone.

-- 
         ___           ___           ___            ___
        /\  \         /\  \         /\__\          /\  \
       /::\  \       /::\  \       /::|  |         \:\  \
      /:/\:\  \     /:/\:\  \     /:|:|  |     ___ /::\__\
     /::\~\:\__\   /::\~\:\  \   /:/|:|  |__  /\  /:/\/__/
    /:/\:\ \:|__| /:/\:\ \:\__\ /:/ |:| /\__\ \:\/:/  /
    \:\~\:\/:/  / \:\~\:\ \/__/ \/__|:|/:/  /  \::/  /
     \:\ \::/  /   \:\ \:\__\       |:/:/  /    \/__/
      \:\/:/  /     \:\ \/__/       |::/  /
       \_:/__/       \:\__\         /:/  /
                      \/__/         \/__/

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#507549

the heat of fusion is tres largish

> >>> takes a long time, and we're still not sure how much additional
> >>> melting we've already committed to. An understanding of this
> >>> relationship in the past can help us understand both that and where
> >>> we're likely to be headed. As the authors put it, "Given the recent
> >>> increases in greenhouse gases and global mean temperature, the
> >>> present ice sheets are out of equilibrium with the climate, raising
> >>> important questions regarding their potential future contribution to
> >>> sea-level rise."
> >>>
> >>> The authors looked at three different warm periods. One was the
> >>> Mid-Pliocene warm period, which occurred three million years ago,
> >>> when atmospheric CO2 levels were similar to their present values.
> >>> Most climate records suggest temperatures were a few degrees warmer
> >>> than present (between 1 and 4 degrees Celsius), but some Arctic
> >>> records suggest elevated temperatures of up to 8 degrees Celsius,
> >>> which could have severe consequences for the Greenland ice sheet.
> >>> Coastal records suggest sea levels rose by more than 15 meters, while
> >>> models of the ice sheets in Greenland and Antarctica suggest those
> >>> contributed 13m to this rise.
> >>>
> >>> The second period considered was an unusually long interglacial
> >>> period about 400,000 years ago. Greenhouse gases reached levels
> >>> similar to those found in preindustrial times, while temperature
> >>> estimates suggest a climate that was 1 to 2 degrees Celsius warmer
> >>> than present. But pollen suggests that southern Greenland was covered
> >>> in a spruce forest, and sea level estimates suggest a rise of at
> >>> least 6 meters--the source of the 20 foot rise that made the
> >>> headlines.
> >>>
> >>> Another interglacial, coming about 120,000 years ago, saw global
> >>> temperatures only slightly warmer than present, but the Arctic and
> >>> Antarctic appeared to be unusually warm (in the area of 5 degrees
> >>> Celsius). Sea levels again reached at least six meters above present.
> >>> And some records suggest fluctuations of a meter or so occurred once
> >>> the high point was reached.
> >>>
> >>> So, *most of these estimates suggest* we're in for a lot higher sea
> >>> level given that we're committed to emitting enough carbon to easily
> >>> surpass the temperatures involved in the past warm periods. But it's
> >>> not entirely that simple. Those warm periods were caused by changes
> >>> in the pattern of sunlight that brings more to the Northern
> >>> Hemisphere--potentially explaining the high Arctic temperatures and
> >>> the severe impacts on Greenland. (That doesn't, of course, explain
> >>> the evidence of high Antarctic temperatures.) And, as noted above,
> >>> the error bars are still quite large.
> >>
> >>     Mom always said -- don build in the flood plain or near sea level.
> >
> > My Mom (2 yr more than Bert) lives in central Italy near the sea
> > (Adriatic) and there is a fine, light golden tinged sandy beach
> > (~50 m, difference in level is ~1 m): when the sea eats even one
> > meter (there are durable reference points) I could positively
> > tell you.
> >
> > regards
> > Angelo
> 
> So Angelo, as I understand it from "Professor" Wormley, global warming 
> cause a sea rise of more than a meter years ago! So tell us when you 
> noticed the beach was gone.
> 
> -- 
>          ___           ___           ___            ___
>         /\  \         /\  \         /\__\          /\  \
>        /::\  \       /::\  \       /::|  |         \:\  \
>       /:/\:\  \     /:/\:\  \     /:|:|  |     ___ /::\__\
>      /::\~\:\__\   /::\~\:\  \   /:/|:|  |__  /\  /:/\/__/
>     /:/\:\ \:|__| /:/\:\ \:\__\ /:/ |:| /\__\ \:\/:/  /
>     \:\~\:\/:/  / \:\~\:\ \/__/ \/__|:|/:/  /  \::/  /
>      \:\ \::/  /   \:\ \:\__\       |:/:/  /    \/__/
>       \:\/:/  /     \:\ \/__/       |::/  /
>        \_:/__/       \:\__\         /:/  /
>                       \/__/         \/__/

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