Among the difficult, arcane arguments entangled in the doctrine of dangerous anthropogenic global warming (DAGW), the simplest, most immediate and most understandable is that a general warming leads to dangerous climate change. First warming, then dangerous changes. Nobody seems to argue with that — not openly, anyway.
Here’s good sceptical climate information all wrapped up in a lovely example of how to deliver it.
My good friend Bryan Leyland, engineer, sent this exchange. He gives us an admirable example of the best practicality and erudition, conjoined as only Kiwis do it, leavened with a charming humanity.
Some while ago Bryan gave an address to IPENZ (Institute of Professional Engineers NZ) members in Whangarei and one of his audience has been thinking carefully about what he said. Bryan just received a letter from this colleague, who describes himself as an environmental engineer, and Bryan replied. Below, the letter writer, with his name and details withheld to preserve his privacy, is quoted in the green text.
Emissions of greenhouse gases are quoted everywhere to illustrate how humanity is sending the world to hell in a hand basket.
The articles make much of “emissions” from various countries, from the developed and the developing worlds. How many know that these vast, hugely important quantities are not even measured?
They’re only calculated from reported energy use — and they are far from reliable. That’s the first point. The second point is that emissions lead, presumably, to a global temperature increase. If they didn’t, there wouldn’t be a problem, would there?
But emissions don’t automatically mean higher temperatures. For a start, about 45% of human emissions — regardless how they increase — are absorbed somewhere in the gigantic natural system. Nobody knows where it all goes. It’s immensely complicated to track our puny emissions of carbon dioxide as they mix with the truly gargantuan streams out of and into forests and the oceans.
So most authors make no attempt to convert the net emissions into a temperature increase, but why not, actually?
The main reason would be that nobody — and I mean nobody, from the IPCC, NASA, the CRU at East Anglia and Al Gore all the way down to me — has the foggiest idea of the temperature that will result from these emissions.
Why does nobody demand some evidence?
What has persuaded everyone, without evidence, that there’s a problem?
Well, where’s your evidence, Renowden?
The graph that proves no significant warming for about 15 years – since about 1996. Measured by satellite, not the unreliable hand of man. The wiggly blue line trending steadily upwards is the CO2 concentration. There is no sign of it affecting the temperature. Though CO2 probably raises the temperature a little, it is for all practical concerns irrelevant because other factors overpower it for decades at a time — which is why we point out the lack of warming over the last 15 years. The global warming hypothesis has been demolished. Click for larger version.
The certainty of Treadgold’s denial is only possible because he creates a carefully cultivated cocoon of ignorance around himself and around the true believers who worship at his blog. The world where the rest of us live is a much more uncomfortable place. We have to work with whatever reality throws at us. Retreating into a fantasy world where warming hasn’t happened for 15 years is a luxury only the deluded can afford.
When being criticised, it’s relatively easy to ignore people you’ve never heard of, but it’s not so easy to ignore your friends. It’s possible that this astonishing rebuke from respected former NASA scientists, engineers and astronauts might change minds at NASA where world-wide sceptical opposition from strangers has not. h/t WUWT. Press release from SPPI.
HOUSTON, TX – April 10, 2012. 49 former NASA scientists and astronauts sent a letter to NASA Administrator Charles Bolden last week admonishing the agency for its role in advocating a high degree of certainty that man-made CO2 is a major cause of climate change while neglecting empirical evidence that calls the theory into question.
Though climate alarmists have claimed for several years that evidence for dangerous man-made global warming is “overwhelming”, it’s actually becoming harder and harder to find.
So says the radical Renowden, he of the non-sceptical “believe everything they say” warmist persuasion. But read what he says about Chris de Freitas’ crimes and you’ll realise he says nothing, because no crimes exist.
Gareth Renowden is himself guilty of attempting to abridge the academic freedom to study and teach inconvenient facts.