Tue, 20 Apr 2010 14:37 UTC
The eruption of the Eyjafjallajokull volcano is unlikely to have any significant impact on climate but has caused a small fall in carbon emissions, experts say.
Although large eruptions such as Mount Pinatubo in 1991 can spew out enough material to shade and cool the planet, recent activity in Iceland is very small in comparison. The ash cloud has not reached the high atmosphere, where it would have the most effect, and it contains little sulphur, which forms reflective droplets of sulphuric acid. The World Meteorological Organisation in Geneva says any cooling effect from Eyjafjallajokull will be "very insignificant".
A larger effect on the atmosphere, though still small in global terms, comes from the mass-grounding of European flights over the past few days. According to the Environmental Transport Association, by the end of today the flight ban will have prevented the emission of some 2.8m tonnes of carbon dioxide since the first flights were grounded.
The volcanic eruption has released carbon dioxide, but the amount is dwarfed by the savings. Based on readings taken by scientists during the first phase of Eyjafjallajokull activity last month, the website Information is Beautiful calculated the volcano has emitted about 15,000 tonnes of CO2 each day. Worldwide, the US Geological Survey says volcanoes produce about 200m tonnes of carbon dioxide every year.
Comment: Once again 'experts' on the man-made global warming bandwagon spreading absurdities. The real issue is the massive volume of toxic fluoride and ash that is contaminating drinking water and threatening livestock.
Next we'll be told that humans caused the volcanic eruption...Oh hang on..CNN and NPR already have:
NPR and CNN worry that Global Warming may have caused Iceland's Volcano!!!
This is just too bizarre:Diana Rehm (NPR): We do wonder whether there's human involvement in all of these eruptions, earthquakes, storms -How exactly could global warming cause a volcano to go off?
Elise Labott (senior State Department producer for CNN): - 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.