Anthropogenic global warming believers are notoriously debate-shy, and with good reason. They almost always lose. However, below is an excerpt from the transcript of a debate between skeptic Christopher Monckton and De Smog Blog editor Richard Littlemore (who, later, actually admits he was defeated, although not with good grace). For the full transcript, click here.
An excerpt:
Monckton
Now the temperature record is like this; the temperature went up very fast between about 1906 and 1940. Indeed in the 1920s and 1930s it went up very fast indeed. From 1940 until about 1975, it fell a little. From 1975 until 1998 it went up quite a lot — about 0.5 Celsius overall over the 50 years you are asking about. And that is of course preceded by a 0.5 degree Celsius increase long before humankind could have had anything to do with it in the first 50 years of the twentieth century.
So yes there has been an increase, however that increase has been going on at a rate on average of about 0.5 Celsius per century for 300 years, during 250 of which we could not possibly have had anything to do with it. And now that temperatures have been falling for the last seven years and falling at a rate of about 0.4 degrees Celsius per century according to the Hadley Center’s records, or per decade I should say, the overall effect is that there has been no increase in the long-run warming rate over the past 300 years. There has been no particular change in the second half of the twentieth century.
Littlemore
I don’t know where you’re getting a lot of this. But if your listeners would like to Google, climate or um, global warming, um, or go to Wikipedia and look up global warming, they can get a nice graph from the National Oceanic and Atmospheric Administration — a pretty reputable organization — that will show you some of the ups and downs that have been mooted here. But from 1950 until now, if you put a ruler on the curve it goes up at about a 45 degree angle. Eleven of the hottest years in recorded history occurred in the last 13 years. How that can be characterized as anything other than a considerable increase. … I mean it’s not just 11 of the hottest years in recorded history. According to some very good climate reconstructions going back at least 1,000 years, we’re talking about the hottest decade in 1,000 years at least.
Monckton
Well no, we’re not. The ‘hockey stick’ graph that is purported to abolish the Medieval Warm Period was based on bristlecone pine reconstructions from tree rings using a process which the UN climate panel had itself said ought not to be used. If you take out the bristlecone pine record and use all the other datasets you find that, just as history confirms, there was a Medieval Warm Period during which temperatures were considerably higher than they are now.
Indeed, in the 10,000 years of the present interglacial period between ice ages, the temperature has been warmer than today about two-thirds of the time. And in each of the previous four or five interglacial periods, which occur every 125,000 years, the temperature has been up to 5 degrees Celsius warmer than it is today, and humankind cannot have had anything to do with it. What is more, the Sun has been more active and for longer over the last 70 years than at almost any previous similar period over the past 11,400 years since the end of the last ice age.
Links to transcripts or videos several debates between skeptics and warmists can be found by clicking here.