There is a great website from the National Oceanic and Atmospheric Administration (NOAA) where you can plot temperature trends in the US and it’s probably not widely shared because if more people knew about it then fewer people would believe the lies of the Anthropogenic Global Warming (AGW) cult.
Here is a plot of temperatures in the Contiguous US (CUS) for the month of October from 1895 to 2013 and it looks pretty flat to me.
Here is a plot of temperatures in my home state of South Carolina for October from 1895 to 2013:
Yes, but what about the summer months? Surely we see a long term warming trend there. Well, yes and no. Here is a plot of temperatures in the CUS for the month of July from 1895 to 2013:
Notice that the average temperatures in the last decade are about the same as the temperature in the 1930’s? There is a good reason for this and you can read about it here. Be sure and read that link but if you don’t have time, here is the takeaway – The Atlantic Multidecadal Oscillation (AMO) and Pacific Decadal Oscillation (PDO) have more responsibility for Earth’s temperatures than atmospheric CO2 concentrations.
But the AGW cult claims that increased atmospheric CO2 concentrations are driving Earth’s temperatures up. Let’s take a look at that theory and see if the data supports that claim.
Since 1958, atmospheric CO2 concentrations have increased from about 315 ppm to 395 ppm which is a 25 % increase. Here is the graph:
Let’s see what CUS temperatures have done during that same period.
Based on the two graphs above we can safely state that since 1958 the Atmospheric CO2 concentrations have increased by 25% but CUS temperatures only increased by 2.7%. Not exactly a direct correlation here. But I’ve already shown that before from the following graph:
It is worth noting that the temperature increases that we’ve seen over the past few decades are not unique. Let’s see what the CUS temperature increases looked like form 1895 to 1935:
Keep in mind that the Intergovernmental Panel on Climate Change (IPCC) AR4 report predicts future temperature increases of 0.2°C per decade or 2.0°C per century. To convert Celsius to Fahrenheit you use the following formula – F = C x 9/5 +32 – and the slope of 9/5ths is all you need to convert deltas of C to F so a 2.0°C per century rise per century is equivalent to a 3.6°F rise per century. The CUS temperature trend increase from 1895 to 1935 is almost 50% more than the fear mongering predictions of the AGW cult!
If you want to counter the pseudo science of the AGW cult all you have to do is point out that the CUS temperature increase from 1895 to 1935 was about 2.8% (72.25°F to 74.3°F) which matches almost exactly the temperature increase (2.7%) we’ve seen from 1958 to 2013. Not to put too fine a point on this but we were not driving SUV’s during the early 20th century.
Do not be fooled by the State Run Media or be intimidated by the Climate ‘scientists’. The true deniers of science are those who are members of the AGW cult. Follow the data.