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Climate change: who do we believe?

By John Schluter | View Archive September 30th, 2008, 4:03 pm
Have you noticed lately there's been a rather big shift in attitudes towards climate change?

Two years ago, there was a huge groundswell of support for the theory that global Warming equals climate change. It's been a time when the Intergovernmental Panel on Climate Change almost unanimously agreed climate change is happening and humans are making a significant contribution.

But there have been a lot of opposing views from equally credible sources, so for a lot of us it's become very confusing. Who and what do we believe?

One thing is for sure, climate change is nothing new. It's been going on since time began and this is yet another spanner in the works.

A good example happened in our own backyard not that long ago. In 1991, Mt Pinatubo in the Philippines erupted and created a sulphuric acid haze that reached into the stratosphere.

Immediately, it spread further through the atmosphere and within two months, the ash was affecting most of the world.

It actually impacted Australia, with more vivid and dramatic sunsets and sunrises. That happens when light from the sun passes through the atmosphere and scatters off the added particles, creating brighter colours.

But the real impact was felt over a much larger area. It's thought for two years after the Mt Pinatubo eruption, the world's climate actually cooled, because the large ash clouds refected heat back into space.

So in theory, the climate changed, but unlike the current thinking, it was without any human intervention.

History has many similar tales to tell. In 1783, Benjamin Franklin noticed after a vocanic eruption in Iceland, sunlight directed through a magnifying glass no longer set fire to a piece of paper.

In 1815, after a huge eruption near Borneo, they went through a period known as "the year without summer", again because of the cooling affect of the volcanic ash.

So the debate goes on, but in many ways a lot of this is certainly nothing new.

Comments

  1. easyfrogjump View Profile

    Who are these "equally credible sources" from paragraph 3? Dr Fred Singer for instance ex spokesman for the non-cancer causing tobacco industry? The cosmic ray stuff in "Swindle" is a red herring. The Danish team mentioned expects cosmic rays to make a 1.5% +or- in cloud cover from one extreme to the other. ( look up the CERN website ). There IS a proven relationship between CO2 & infrared. Suppose the GW theory is wrong but we go with it, we end up where we have to go an

    Oct 23 09:37 pm
  2. matthewhanson74 View Profile

    The species Homo Sapien (us) is the only species to date that has had any altering effect on the Big Blue.
    Population explosions coupled with the damand to live like the other half see fossil fuels burnt at ever increasing rates.
    Anybody with half a brain knows what is driving these global melts.
    "we are"
    The question is who has the bricks to do somthing about it.
    A spine coupled with a conscious. That would be as refreshing as honesty.

    Oct 25 01:34 pm
  3. blackmore_nick View Profile

    Climate change is a load of rubbish. You can thank George Soros and Al Gore for this money spinning lie. The price of electricity and water will be dirt cheap compared to the comming decades. Stupid gullible masses!

    Oct 25 11:21 pm
  4. rayharlum View Profile

    you all sound like either "coal/oil" investors or "extremely intellectuality challenged ".don't worry once all the ice at the poles melts and releases all the oceans stored methane and CO2.the earth's temp rise rate will be 5 TIMES faster. you cannot argue about this.
    To raise ice temp(MELT) from ZERO to 1 degree above zero degrees C. requires 5 times the HEAT ENERGY than to raise its temp either from -1 to ZERO degrees C or from 1 C to 2 C. an

    So you all will

    Oct 26 04:37 pm
  5. chapster123 View Profile

    What i find most refreshing are peoples responses here, and it's shows we are not being fooled any longer.

    Yep, typical media head fluff, and only keeps heads lost in a sea of points of view, but people are getting to their own lookout and now have their own Viewpoint.

    Sadly, under the premise of their modus operandi, most journo's will be the last to realise.

    Oct 28 03:58 am

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