Will Volcanic Ash in the Air Affect Climate?
While the volcano is causing chaos in the skies, there's also concern it could have an impact on the weather down below, as other volcanoes have in the past, reports CBS News correspondent Manuel Gallegus.
Iceland's spectacular volcanic eruption is catastrophic near the blast. Rapidly-melting glaciers are flooding farmland, while pulverized particles of ash, now 30,000 feet up, are blowing across Europe.
Made up of microscopic particles as hard as a knife's blade, the dust cloud crept across the industrial powerhouses of Europe, into the steppes of Russia and as far south as Hungary on Friday.
How long it lasts and how far it spreads depends entirely on two unpredictable events: whether the volcano beneath Iceland's Eyjafjallajokull glacier keeps pumping tons of dust into the air, and what wind patterns do.
The invisible cloud could split, reaching down into northern Italy, and perhaps break apart over the Alps. Scientists say the volcano could continue erupting for months, with more chaos ensuing with each big belch of basalt powder and gas.
Eventually gravity will take over.
"Because the particles are heavier than the air, they fall out or they hit a rainstorm and get washed out," said Alan Robock, professor of environmental sciences at Rutgers University. "They'll basically just disappear from the atmosphere over a period of days."
The climatologist said the volcanic cloud would have to climb much higher - 40,000 to 50,000 feet - to affect Europe's climate.
"Only if the eruption becomes much stronger and puts a lot more particles, a lot more sulfur gas in the atmosphere, could it have a large effect on climate," said Robock.
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The volcano is coughing up about 3,000 tons of sulfur dioxide each day. When that combines with water vapor in the upper atmosphere, it can reflect sunlight away from the Earth, cooling temperatures on the ground.
That's what happened when Mount Pinatubo erupted in the Philippines in 1991.
The ash flow from that eruption spread around the world in a few days, said Professor Jonathan Lees of the University of North Carolina-Chapel Hill. "There was enough material in the atmosphere to cause the average temperature of the Earth to go down one degree."
Since the last time the Icelandic volcano erupted was nearly 200 years ago, scientists are having a hard time predicting how long this eruption will last.
And it is feared the cloud of grit, once it settles on Earth, will endanger the lungs of children, asthmatics and others with respiratory ailments.
"We're very concerned about it," said World Health Organization spokesman Daniel Epstein. "These particles when inhaled can reach the peripheral regions of…the lungs and can cause problems."
Copyright 2010 CBS. All rights reserved. Iceland's spectacular volcanic eruption is catastrophic near the blast. Rapidly-melting glaciers are flooding farmland, while pulverized particles of ash, now 30,000 feet up, are blowing across Europe.
Made up of microscopic particles as hard as a knife's blade, the dust cloud crept across the industrial powerhouses of Europe, into the steppes of Russia and as far south as Hungary on Friday.
How long it lasts and how far it spreads depends entirely on two unpredictable events: whether the volcano beneath Iceland's Eyjafjallajokull glacier keeps pumping tons of dust into the air, and what wind patterns do.
The invisible cloud could split, reaching down into northern Italy, and perhaps break apart over the Alps. Scientists say the volcano could continue erupting for months, with more chaos ensuing with each big belch of basalt powder and gas.
Eventually gravity will take over.
"Because the particles are heavier than the air, they fall out or they hit a rainstorm and get washed out," said Alan Robock, professor of environmental sciences at Rutgers University. "They'll basically just disappear from the atmosphere over a period of days."
The climatologist said the volcanic cloud would have to climb much higher - 40,000 to 50,000 feet - to affect Europe's climate.
"Only if the eruption becomes much stronger and puts a lot more particles, a lot more sulfur gas in the atmosphere, could it have a large effect on climate," said Robock.
More on Volcano Fallout: Ash and Travel Woes
Volcano Continues to Ground Air Traffic
Volcano Ash Silences Singers, Hogties Wrestlers
Obama Cancels Trip to Kaczynski's Funeral
Iceland Volcano Eruption
Volcanic Eruption Grinds Modern World to a Halt
Volcano Ash Paralyzes Northern Europe's Airways
Why Ash is Dangerous to Planes
The volcano is coughing up about 3,000 tons of sulfur dioxide each day. When that combines with water vapor in the upper atmosphere, it can reflect sunlight away from the Earth, cooling temperatures on the ground.
That's what happened when Mount Pinatubo erupted in the Philippines in 1991.
The ash flow from that eruption spread around the world in a few days, said Professor Jonathan Lees of the University of North Carolina-Chapel Hill. "There was enough material in the atmosphere to cause the average temperature of the Earth to go down one degree."
Since the last time the Icelandic volcano erupted was nearly 200 years ago, scientists are having a hard time predicting how long this eruption will last.
And it is feared the cloud of grit, once it settles on Earth, will endanger the lungs of children, asthmatics and others with respiratory ailments.
"We're very concerned about it," said World Health Organization spokesman Daniel Epstein. "These particles when inhaled can reach the peripheral regions of…the lungs and can cause problems."
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by jankebenzone April 19, 2010 1:17 PM EDT
Will volcanic ash change climate? Yeah, about as much as the methane gas emitted by gore bull and all the hotair emitted by his gullible cronies did.
The stench of the bs still lingers though.
====================================================
I personally am concerned about all of the hot air coming
out of uneducated blow hards like yourself.
---------------------------------------------------------------------------------
I was educated to think for myself using factual information, many however were educated to think according to how the teacher/prof thought. Too many people therefore think how they're told to think. Big difference!
"Labbot: ?And how much global warming has a role in it. You know we?ve seen a lot of wacky weather but that?s just a microcosm for what?s happening around the world and how much climate change is contributing to earthquakes and volcanic ash ? it?s a really good question.?
Un-F'in believable that you morons can believe this.
Will volcanic ash change climate? Yeah, about as much as the methane gas emitted by gore bull and all the hotair emitted by his gullible cronies did.
The stench of the bs still lingers though.
====================================================
I personally am concerned about all of the hot air coming
out of uneducated blow hards like yourself.
The stench of the bs still lingers though.
Republicans: Who cares, it's the Democrats job to worry about irrelevent issues like Air Quality and the state of the Environment for future generations. Our answer to that question is plain and simple, we say, "DRILL, BABY DRILL!!!"
I agree, Republicans only breathe their own special republican air, and we love it.....the dirtier the better the breathin', right Chitown ?
What's wrong with you ?