posted on Oct, 16 2012 @ 04:21 PM
Originally posted by spooky1973
Having searched for related threads and found none talking about the same news... It appears there is more proof on the subject of The Antarctic not
melting after discovering that computer models were infact incorrect. How can NASA and the met office get it so wrong...
See quote below and link to source.
According to a statement from the American Geophysical Union, announcing the new research: It turns out that past studies, which were based on
computer models without any direct data for comparison or guidance, overestimate the water temperatures and extent of melting beneath the Fimbul Ice
Shelf. This has led to the misconception, Hattermann said, that the ice shelf is losing mass at a faster rate than it is gaining mass, leading to an
overall loss of mass. The team’s results show that water temperatures are far lower than computer models predicted ...
OK, let's try to explain this in a way that you understand it.
Let's say you take a glass of ice water. You measure the temperature of it. You want 15-20 minutes until a great deal of the ice has melted and you
measure the temperature again. Guess what, the temperature is still going to be the same because there is still solid ice in the glass. Granted, it's
not anywhere close to the amount of ice that was there before, but there's still some ice. That means the temperature of the water is still at the
same point but the ice is melting due to the temperature of the room, not the temperature of the water.
Does this mean the ice in the glass isn't really melting? NO, it means there isn't a net change in the temperature of the water. There would have
been if there had been no ice in it, it would be approaching room temperature. Until all the ice in the glass is melted, the water is going to remain
cold. The ice on the other hand, isn't going to remain frozen, it melts. Every last bit of it.
That's exactly what's happening to the Antartic shelf. Although the temperature of the water isn't changing a great deal at the pole (since there
is still ice there), the ice is definitely metling away as is shown in a multitude of satellite images as well as data taken by scientists who are
taking samples of the ice.
After ALL the ice melts, then the temperature of the water will start to increase since the ice isn't offsetting the temperature of the water any
longer. If you want to measure temperature changes, measure them at the equator, that will show if there's a net change in temperature instead of
measuring the temperature in the presence of ice that offsets the temperature as long as there is some ice present.