- Jun 1, 2007
.On his 2) Why Do Some Scientists Say It’s Cooling... he says, “But if we look at a shorter, more recent period of time, say since the record warm year of 1998, one could say that it has cooled in the last 10-12 years.” Yes, but that would not be a climate measurement! There has been no downturn of temperatures on a 20 running average in the last 50 years
Off topic on the great lakes issue.. and once again hopefully everyone who post on climate change gives a reference because there is a lot of intentional deception going on (try fact checking what you hear on AM talk radio some time.. or if you bear your testimony about what you heard on am radio, we can fact check it here). The guy referenced above (Dr Roy Spencer) and that link was written around 2010 when CO2 levels were around 390 ppm. If you look at the UAH satellite plot which I have shown again below (which Roy Spencer is associated with), there was a "hiatus" in the warming trend from say 2000 to 2010 possibly caused by some natural cooling cycle. And of course the deniers were jumping on this and saying that the warming had stopped. But.. look what happened after 2010, take a look at the slope of the temperature increase.. it has a marked upward slope. This is the main denier folks satellite data so you cant say its fudged to show more warning than there really is.
In 2019.. Roy Spencer could no longer say things are cooling recently or that it has cooled in the last 10 years which might have sort of made sense in 2010.
Plot is from here (in keeping with always showing where some info came from) Latest Global Temps « Roy Spencer, PhD
Natural climate cycles are of course important and modify the upward temp trend we are seeing. I can find some references that also say (as the post above) that the natural variations are small compared to our man made contributions. Please show a reference if you find something different..
Yep.. that was actually the point. Temperatures have been rising and there is no correlation to satellite measured solar input. Some folks are still trying to blame the rising temperature anamoly on the sun.. but its very simple to find the satellite measured data which does not try and figure out what the power is after it has gone through the atmosphere. Change in the sun output does not correlate with change in global temp (but likley minor change with the 11 year sun spot cycle).I actually see very little correlation between those two graphs.