[Greenbuilding] Climate breakdown is here. (polar ice melt)

[Steven Tjiang]

I don't think it's the ice in the water that will raise sea levels; It's
all the ice that isn't in the water (i.e. Green land and Antarctica).  Also
if the sea ice is melting it also likely the landlocked ice is also melting
and thus adding more water to the "tub".

---- Steve (KZ6LSD)


On Wed, Aug 29, 2012 at 9:47 AM, Joe Killian <kaa-ajk at sonic.net> wrote:

>    Classic trick high school question:
>   Fill a glass with ice, add water to the brim (top of ice will float
> higher).  Let it melt.  Does it overflow?
>   Answer:  No.  The weight (mass) of water displaced by the floating ice
> is the same as  the weight of all the ice, which is also the same volume of
> the displaced water once melted.
>   So melting sea ice doesn't raise (or lower) sea level.
>   The fresh water added to the ocean, however, may well accelerate the
> feared effect of the melting Greenland ice adding fresh water to the North
> Atlantic and potentially (inevitably?) changing the course of the Gulf
> Stream.  Whereupon northern Europe's climate becomes more like Siberia's
> climate.
>    Hang on....
> Joe
>
>
>
> On 8/29/2012 8:32 AM, Alan Abrams wrote:
>
> if salt water is more dense than fresh--then when the ice pack melts, does
> this not result in a rise in sea level?  No, wait, ice contracts when it
> melts.  But most of a floating mass of ice is submerged, and the volume of
> the exposed mass is equal to the increase in volume as a result of
> freezing...
>
> ...ouch.  my head hurts.
>
> -AA
>
> Alan Abrams*
> Abrams Design Build LLC*
> *design for purposeful living*
>
> 6411 Orchard Avenue Suite 102
> Takoma Park, MD 20912
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> www.abramsdesignbuild.com
>
>
>
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