When I checked my twitter feed earlier today I found a whole heap of unsolicited tweets from CJLB @orach24463_cj. I don't follow them on Twitter and as far as I can tell they don't follow me either. It looks as if I just got caught up in a response CJLB made to someone else.
CJLB describes him or herself as "A conservative just musing about the incoherent dichotomy of the Liberal Mind - Seeking Utopia Begetting Hell". No, I can't figure it out either. What I can guess is that this is an elderly individual who is probably not highly educated formally, but with some self-education. I deduce that from their use of capital letters together with words of more than one syllable. I can also guess that they have opinions to the right of centre and probably a fair way right of centre. I'd also hazard a guess that they are religious, or have had religious training at some stage in their life. They might live in one of the "red" states in the USA. Maybe in the back blocks but not all that far back, because CJLB has discovered not only the internet but also Twitter.
I could be off in my deductions, but all of that is by the way. CJLB sent nine tweets that were directed to my feed. Here is one to which I replied:
@MJIBrown @SouBundanga Is There A Real World experiment tht proves AGW Theory or that Stopping FossilFuel Use Will Mitigate #ClimateChange?
— CJLB (@orach24463_cj) August 7, 2014
I sent CJLB a link to my earlier article on the topic, tweeting:
.@orach24463_cj Yes. There's a real world experiment on Planet Earth. Ever been there? The results are in and prove both. @MJIBrown
— Sou from Bundanga (@SouBundanga) August 7, 2014
Okay, that was a bit snarky. Heck, CJLB deserved a bit of snark. Here they were putting up silly diagrams and asking really dumb questions. It was as if they had a vast collection of denialist crap to parade endlessly on Twitter. One of the things CJLB was flogging was Christopher Monckton's RSS chart of temperatures in the lower troposphere. The one he wheels out whenever he writes one of his "17 years and 10 month" articles at WUWT.
The point is that there are probably some people alive today (not many) who aren't aware that we are conducting an experiment on a global scale. The early results are already in. Adding vast quantities of carbon dioxide to the atmosphere makes the world hotter. It enhances the existing greenhouse effect because CO2 is a greenhouse gas.
CJLB's question prompted me to update an old article. Last year I put up some charts to show how much the planet has warmed since 1996. Deniers are still claiming that it hasn't warmed, with the most common refrain at WUWT being "in 17 years and ten months". That brings us back to 1996. Here are the same charts as I showed last time, updated, so you can see what's happened since 1996.
Since 1996, you say?
1. Surface temperatures have risen.
Surface temperature has gone up quite a lot, and stayed up. Here it is from GISTemp surface temperature anomalies, where I've marked 1996.
|Data source: NASA GISTemp|
And in case you think that GISTemp is the odd one out, it's not. Here is HADCrut4, GISTemp and the two lower troposphere records, all aligned to the same baseline. If any one is a bit odd, it's Christopher Monckton's favourite RSS - although it only diverges a bit in the last couple of years:
|Data source: NASA GISTemp, Met Office Hadley Centre, UAH, RSS|
|Data source: NOAA/NODC|
3. Arctic summer sea ice is fast disappearing:
4. Seas are rising:
|Data source: University of Colorado, Sea Level Research Group|
If you're having trouble figuring out what the charts mean, I've prepared a short video that explains what you can glean from a chart of global surface temperature anomalies. You can see it here at HotWhopper or on YouTube. It should help with the other charts, too.
Sou 9 August 2014