IS THE EARTH WARMING UP?

 

Do you remember a Christmas without snow in Quebec?

With the absence of snow just before Christmas her in Quebec I though to dig up an old post from Neil on the subject of weather.

IS THE EARTH WARMING?

New studies released over the weekend warn of triggers in the natural environment  – including a green-house time bomb in Canada and Siberia – that could   dramatically worsen global warming.

Thawing subarctic tundra could unleash billions of tonnes of gases  that have been safely stored in frosty soil, while oceans and forests are becoming less able to suck carbon dioxide out of the atmosphere.  Together these phenomena mean more heat-trapping gases will enter the atmosphere which in turn will stoke global warming, thrusting the machinery of climate  change into high gear.

The new estimate of  the total amount of carbon that is frozen in permafrost is in the order of one trillion tonnes.  By comparison the amount of carbon dioxide that has been released through the burning of fossil fuels since the beginning of the Industrial Revolution is about 350 billion tonnes.  The tundra gases come from the decayed remains of vegetation that dies long ago.

Do these figures of increased global warming concern you?

There is a small coterie who think global warming is a hoax perpetrated by charlatans like Al Gore.

What do you think?

Posted in February 2009

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