Why I believe in global warming

A few days ago I came across a facebook post from a friend on earth day that certainly wasn’t charitable towards those of us who believe global warming is real and a legitimate concern.  I replied with some vigour and never received a response.

1) The earth is getting warmer.  The temperature record clearly indicates this.  While some the sceptic camp have made some hay by pointing out things seemed to be getting cooler since 1998 it looks like 2010 is going to blow that point out of the water.

We see the evidence of it in shrinking polar ice, glaciers and permafrost.

2) If the earth is warming there must be a cause.  Those who argue the warming is part of a natural process haven’t been able to make a case for which natural force is causing the warming.  We know isn’t the sun, a tilting earth, continental drift, ocean currents or cosmic rays.  All these alternatives have been investigated and ruled out.  We know that C02, methane and other greenhouse gasses cause the atmosphere to retain more heat so they are by far the most likely culprit.

3) Skeptic arguments are often deeply flawed, dishonest or contradictory.  One will argue that the earth isn’t actually warming and then they will argue that the warming is natural.  In desperation they throw as much mud against the wall and hope some of sticks.

There are numerous examples where skeptics have been caught cherry picking data, misrepresenting the facts or flat out lying.  A good place to go to see these examples is deSmogblog and Sceptical Science.

I have made a honest effort to understand  global warming from both of the perspectives and I find the skeptics have the poorer arguments.  Because they can’t make a convincing case in the realm of peer-reviewed science they peddle their wares directly to the public.

  1. #1 by Yussouf on April 25, 2010 - 6:01 pm

    The icecap of Mars is also receding. Who’s driving Hummers up there?
    During the 12 th & 13th century the earth was much warmer than it is now.

  2. #2 by Leighton Tebay on April 25, 2010 - 9:19 pm


    Perhaps you should check out the link to skepticalscience.com. There is a whole section devoted to each of your arguments.

    Mars Icecap

    “The basis of this argument is that the sun must be causing global warming and in fact, warming throughout the solar system. There are several flaws in this line of thought. Firstly, the characterisation that the whole solar system is warming is erroneous. Around 6 planets or moons out of the more than 100 bodies in the solar system have been observed to be warming. On the other hand, Uranus is cooling (Young 2001).

    Secondly, the theory that a brightening sun is causing global warming falls apart when you consider the sun has shown little to no trend since the 1950s. A variety of independent measurements of solar activity including satellite data, sunspot numbers, UV levels and solar magnetograms all paint a consistent picture. Over the last 35 years of global warming, sun and climate have been moving in opposite directions.”

    Feel free to read more about Mars here http://www.skepticalscience.com/argument.php?a=39

    It was warmer in 12th and 13th centuries

    Actually it wasn’t, Europe and Greenland were particularly warm but on balance the planet was cooler than it is now. Even if it was, that only proves that natural forcings made it warmer, that doesn’t disprove that anthropogenic forces aren’t making it warmer now. Warming can be caused by natural and human activity.


    Like I mentioned in my post, the skeptic arguments are shallow and dishonest. They will point out one planet is cooling but neglect that most bodies in the solar system are not. They will continue to make false claims like the planet was warmer in a certain period, when only one section of the planet was warm.


  3. #3 by Robert Kenneth Peter Kroeker on May 1, 2010 - 6:03 am

    I used to work for a juice/coffee company fixing equipment in the Ft. Mac area. I went to every big camp around Ft. McMurray, and saw all that is happening up there…
    After this experience, I’m not sure how anyone can say that our impact on the environment, and global warming in particular, is negligible. I’m the last person to get on the global warming band wagon, but now – as an evangelical Christian – I’m ashamed where most of my conservative bro and sis have gone on this issue. We are slowly killing ourselves. Read the scriptures – this self-destructiveness is actually pretty “natural”.

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