There will be 57 different sessions and none of them will be on whether there will be a four -
inch glacier melt or a two - inch.
Not exact matches
And even though these coastal
glaciers have passed the point of no return, the researchers predict it's unlikely they'll
melt entirely until 2100 — when that happens it's estimated that it will raise global sea levels by around 3.8 cm (1.5
inches).
In the past, experts thought the undersides of
glaciers would
melt only a few
inches each year.
It is tough to get a firm indication of total global alpine
glacier volumes, but assuming that the global total is 100 times that in Europe (a wildly high estimate), if they were all to
melt that would imply a global sea level rise of less than one
inch.
Researchers using NASA data have estimated that if all of the ice in the
glaciers were to
melt, the sea level would rise by 17
inches — a lot but not catastrophic.
The
melt - off from the world's ice sheets, ice caps and
glaciers over eight years of the past decade would have been enough to cover the United States in about 18
inches (46 centimeters) of water, according to new research based on the most - comprehensive analysis of satellite data yet.
And the contribution from
melting glaciers / ice in other parts of the world (not counting Greenland and Antarctica) is even smaller, maybe 2 - 4
inches.
They determined, however, that this volume had now increased by a further 3 cubic miles each year, prompted by an acceleration in the rate at which the ice caps and
glaciers are
melting.Unlike what many other scientists have said — including, most prominently, NASA's James Hansen (who believes that a rise in 17
inches by 2100 will be mainly precipitated by the
melting of ice sheets)-- the authors of this study believe that the loss of ice from
glaciers and ice caps will account for the majority of the expected rise in sea levels.
If all the
glaciers were to
melt, global sea levels would rise almost 17
inches (43 centimeters), the scientists found.»
Ancient
melting events suggest that
glaciers can disappear in a hurry, however, and raise sea levels by more than half an
inch a year.