Although unimpressed with the “facts” used to justify the cult of global warming, I usually keep out of this discussion because disagreeing with global warming is like being seen as a “holocaust denier” – logic goes out the arse, and people go into rabid attack dog mode, but what the hell, if they want to freak out about global warming, that’s their problem.
The last thing I want to look like is a defender of the American right to drive “SUV’s” – cutting down on pollution is a good thing, it just has bugger all to do with global warming.
But today I'm in the mood to wind up some Steemit fudders. I’ll just attempt to keep this very simple, and maybe it will even encourage some of the fudders to think this stuff through for themselves.
More than anything else, time is the key factor in understanding global warming. The earth doesn't run on human time frames – like most planets it runs on much longer cycles. If we look at the past 2000 years, it’s true that the temperature was at the higher end of it’s range 10 years ago. But 2000 years is insignificant to a planet – the sort of time span we need to be looking at is half a million years
The patterns of warming and cooling become clearer the longer the time span we look at – in fact over 500,000 years the temperature chart looks almost like a heartbeat. Yes, it’s been hotter, and it’s been colder, and it’s managed to do both without any help from humans…
Over this time frame the key factor in temperature change appears to be variations in the shape of earth’s elliptical orbit – when we orbit closer to the sun the earth gets hotter.
Approximately every 100,000 years Earth’s climate warms up temporarily. These warm periods, called interglacial periods, appear to last approximately 15,000 to 20,000 years before regressing back to a cold ice age climate. At year 18,000 and counting our current interglacial vacation from the Ice Age is much nearer its end than its beginning.
http://www.geocraft.com/WVFossils/ice_ages.html
But here are four major temperature change cycles related to the sun that do have a big hand in changing the earth’s temperature:
11 year and 206 year cycles: Cycles of sunspot activity
21,000 year cycle: Earth’s combined tilt and elliptical orbit around the Sun
41,000 year cycle: Cycle of the +/- 1.5° wobble in Earth’s orbit ( tilt )
100,000 year cycle: Variations in the shape of Earth’s elliptical orbit
The mainstay of the Global Warming movement is that CO2 causes global warming.
They like to show a chart of global temperatures next to CO2 levels, and say things like:
“You can see almost perfect correlation between CO2 levels and average global temperature”
And indeed you can, because CO2 levels FOLLOW temperature – and this is a rare instance where the warmerists like to pull out a long term chart.
The long time frame allows them to transpose the temperature and CO2 data from the ice core samples in such a way as to make them look simultaneous.
But a more detailed chart would reveal that the CO2 rises hundreds of years after the temperature goes up.
They get all fired up and say things like:
“The graph shows that after the invention of the automobile CO2 started to increase and hasn’t stopped in the last 100 years since – I rest my case”
To which someone might ask – Was it cars that caused the rise in CO2 130,000 years ago as well? And then if we are going to be picky we might also point out that this chart shows CO2 starting to rise sharply around 15,000 years ago, which somewhat predates the invention of the car…
But I digress, it’s probably best to stick to the basics, or things can get very confusing.
CO2 is produced by ALL LIVING ORGANISMS. Bacteria and other microorganisms produce more CO2 than all humans put together could ever produce. In fact human contribution to atmospheric CO2 is less than 0.3% of the total.
Where does the rest come from? – well, from water vapour mostly.
Oceans, rivers, lakes, clouds, that sort of stuff. Not Humvees all that much.
Just to show some evidence from New Zealand - here are a couple of photos from Fox Glacier - taken in 2007 and 2014.
Yes there was indeed a lot more ice in 2014 than there was in 2007 , and there is a lot more now - that is not a sign of warming!
If you would like to see a bunch more information about the global warming fraud I have a web page here:
http://www.frot.co.nz/design/sift/global-warming/
But like links to videos exposing fake American school shootings, sites exposing the global warming con seem to keep disappearing, so posting links to them can be a bit of a dead end.
"Why Invent Global Warming? – In 2004 $4.3 billion was earned by the global warming industry. Most was invested in research and development, and the media fed at the trough too. Fear is bankable. If a population can be convinced that global warming is occurring, there is money to be made. What started off as a small group now has thousands of employees drawing wages" - Ken Ring
