On Feb 12, 12:11*pm, wrote:
On Feb 12, 10:59*am, David wrote:





On Feb 12, 11:01*am, Peter Franks wrote:

David wrote:
Accuweather
http://global-warming.accuweather.co...of_ice_sheet_w...

David Christainsen - Meteorologist

What increase in mean global temperature would lead to the "complete
collapse of the West Antarctica Ice Sheet"?

I cannot answer your question specifically. *However -

Adapting to our changing climatewww.atse.org.au/uploads/Focus149.pdf

"For the West Antarctica Ice Sheet, the major concern

waesel word count: "the major concern" - 3

is that warmed ocean water is penetrating beneath
the ice sheet that is grounded below sea level, melting
it at its base. There are observations indicating both of

"are observations" - 2 - total 5

these processes may already be occurring. However,

"may already be occurring" - 3 - total 8

our current understanding is too limited to estimate
how much faster sea level could rise."

Cool. An admission if complete ignorance.



-----

RealClimatehttp://www.realclimate.org/?comments_popup=503

Extract -
I just read Hansen et al. article published in 1981 in
Science (for other reasons that the present discussion).
It predicts a 2.5-4.5 °C warming for 21st century according

"predicts" - 1 - total 9

to fossil fuel proportion in energy use. It says precisely that
a 2°C global warming would be enough for a 5°C warming

"would be" = 2, total 11

of the West Antarctica Ice Sheet, whose melting could be
rapid (”requiring a century or less and causing a sea level

"could be rapid" = 3, total 14

rise of 5 to 6m” that “would flood 25% of Louisiana and
Florida”).

David Christainsen - Meteorologist

"would flood" = 2, total 16

Neat stuff.

I took your post as a joke.

Meteorology means uncertainly. I you can't handle it,
get out of the business.

To be perfectly clear, I myself don't expect the "complete
collapse of the West Antarctica Ice Sheet" in the
next 1000 years.

David Christainsen - Meteorologist