Saturday, July 25, 2009

Climate change - Man made or down to nature?

Most scientists today agree how climate change is mostly happening because of human activity, most notably industrial activity in form of fossil fuels burning that accounts for large quantity of greenhouse gases in the atmosphere that cause global warming and climate change.

Data from Intergovernmental Panel on Climate Change (IPCC) reveal how global temperatures have increased by an average of 0.74 degrees Celsius, between 1906 and 2005, and that 11 of the 12 warmest years on record were in the 12 years before 2007. And the different computer models projected that global temperatures are likely to rise a further 1.1C to 6.4C during the 21st century. And according to widely accepted IPCC theory constantly rising levels of greenhouse gases from human activity are mostly responsible for constant growth in temperatures. This is the reason why world leaders are working hard to create new international climate deal that would cut greenhouse gas emissions on global level, and stop further temperature increase that could cause more frequent extreme weather events like floods, droughts, and hurricanes.

But not all scientists agree how humans are the ones responsible for climate change,latest research carried out by three Australasian scientists (Auckland University climate scientist Chris de Freitas, James Cook University academic Bob Carter, and Melbourne scientist John McLean) concluded that nature, and not mankind, is mostly responsible for recent climate change problem.

According to the results of their study in the past 50 years the average global temperature in the lowest layer of the atmosphere had fallen and risen in close agreement with El Nino or La Nina conditions.

They believe how a strong relationship between the southern oscillation index, which is responsible for bringing El Nino in its negative phase and La Nina when positive, had been the most important temperature influence since the time continuous records of lower-atmosphere temperatures began being measured, back in 1958.

So if we are to believe this new research climate change is down to nature and not due to our excessive industrial activity. This new research is likely to trigger lots of responses from many scientists and environmentalists who are convinced that climate change is mostly down to human activity. So it would be really interesting to see what future researches will tell us about the origin of climate change problem.

Whether or not climate change is man-made or down to nature this still doesn't mean that we should continue polluting our planet with ever-increasing greenhouse gas emissions. Climate change is not the only ecological problem, and we should be really trying to find solutions to all other ecological problems as well. Making our industry more green would be a step of the most significant importance to preserve our planet for our future generations.

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