If the world is supposed to be getting warmer...i.e. Global Warming???

Question

then why were there nacreous clouds in Antarctica which are rare and only are produced in the coldest of temperatures....less than minus 176 degrees Fahrenheit?

http://news.yahoo.com/s/ap/20060801/ap_on_sc/antarctica_clouds_4

Answer 1

"Just watch The Day after Tomorrow. Global warming in fact causes extreme whether patterns with one of the worst case scenario being rapid climate shift."

That movie was not meant to be taken seriously. It was written by Hollywood and the scientist who consulted the director about the movie laughed out loud when he saw it. Just like I'm laughing out loud at you right now for suggesting that movie as if it were a documentary of some kind.

Answer 2

Global warming is not simple like that. It changes climate patterns and some places get much hotter, some stay the same, some get colder. On average, more places are getting hotter because of human influence.

These clouds are forming in the winter in Antartica, and it probably has to do with disrupted climate patterns. Antartica, in the summer, is warming dramatically. A few years a go, the largest ice movement ever recorded happened in Antartica when a shelf the size of Rhode Island broke off.

CO2 is 30% higher than it has been for 650,000 years. Methane is 130% greater. These are two of the main pollutants humans put into the atmosphere in excess, and they are two of the primary greenhouse gases.

Look at the 'hockeystick', which shows a dramatic warming since 1950 after a fairly stable climate for 1000 years. In fact, the 10 hottest years in recorded history have all happened since 1990, with 2005 being the hottest, and 2006 is shaping up to maybe break that record.
(see links below)

There has NEVER been an article doubting man's influence on global warming published in a peer-reviewed journal. A recent study of almost 1000 proved that.

Yes, the earth naturally heats and cools, but the rate and amount we are warming now is unprecedented in the recent geologic past. We are doing this, and we must stop it. This is not some political statement or rhetoric. This is science trying to educate a crass, ignorant public of the damage they are doing. The magnitude of temperature increase ALREADY is about 10x that of the 'little ice age' of the middle ages, and rate and amount are only going up.

Just to be clear, glacial and interglacial cycles are mainly controlled by astronomical fluctuations, but we have a detailed record of the last 7 cycles, and what the climate and CO2 is doing now is way different and extreme. The rate of increase is much higher than in the past AND the value itself is much higher.

HI CO2:
http://news.bbc.co.uk/1/hi/sci/tech/4467420.stm
HOCKEY STICK:
http://news.bbc.co.uk/1/hi/sci/tech/5109188.stm
General climate stuff:
http://news.bbc.co.uk/1/hi/sci/tech/3897061.stm

Answer 3

""Just watch The Day after Tomorrow. Global warming in fact causes extreme whether patterns with one of the worst case scenario being rapid climate shift."

That movie was not meant to be taken seriously. It was written by Hollywood and the scientist who consulted the director about the movie laughed out loud when he saw it. Just like I'm laughing out loud at you right now for suggesting that movie as if it were a documentary of some kind. "

Yes, of course it's a movie. But the science in it is based on real theories. Of course, they had to speed it up to fit the time frame of a movie ("The Day After the Next Few Centuries Or So" doesn't have the same ring to it). But the core ideas behind the changes in weather pattern and its causes are still pretty valid.

Answer 4

According to this article these clouds are high in the stratosphere and as global temperatures rise the temperatures in the upper stratosphere drop. "temperatures in the stratosphere, between 8 and 50 km (5-31 miles) above Earth, would be expected to drop as global warming increases. Data collected over the past 25 years had reflected this...."

Just watch The Day after Tomorrow. Global warming in fact causes extreme whether patterns with one of the worst case scenario being rapid climate shift.

Answer 5

The article clearly states that they can only be seen in the coldest part of the winter at a certain angle and at certain light conditions.

And, it's wintertime in antartica.

Global warming is happening, it just hasn't got warm enough for these clouds to stop forming, and it will probably be a while until that happens, as atmospheric temperatures 6 miles up are rarely affected by surface temps in the biosphere.

Cheers.

Answer 6

YEP EFFECTING THE RAIN FOREST NO CARBON DIOXIDE/ MONOXIDE MESS A MESS