[graeme]

Lindzen doesn't dispute that CO2 warms the atmosphere! The vast majority of "skeptics" seem to think it's all a fraud, and that CO2 does nothing.

There is zero support for that position.

If you would like to debate the merits of Lindzen's views, feel free to do so: he thinks there will be less warming than existing models predict. He doesn't deny warming!

Meanwhile he retired in 2013, and as far as I can tell has produced no active research in this field since 2011. And his 2011 paper was widely panned including by reviewers he selected. He had to correct numerous errors in the paper. According to wikipedia, he eventually argued that at least 75% of predicted warming was happening.

So, a 25% margin off a catastrophic level of warming. And that's the very best name you can produce. And this info is all in the link you sent. And that's apart from the question of whether he was right in his argument in 2011, which is a factual answer we can measure with temperature sensors. (IIRC, warming has progressed faster than expected instead)

Contrary to your point, there is tremendous economic incentive to prove that fossil fuels are safe, cause us no trouble, and can continue to be used. Anyone who decisively proved that would be a hero, as fossil fuels are very useful indeed. The absence of such a person suggests that this view is mistaken.

[rjf72]

You're fighting against strawmen, which is understandable when everybody is afraid to talk unless it's to repeat the 'right' thoughts. It's quite obvious that greenhouse gases can increase temperatures. A basic understanding of how high frequency energy is converted into low frequency energy as is absorbed/emitted by the Earth and how the greenhouse gases react to both forms of energy is sufficient to prove this.

Lindzen's main issue is that the models are completely broken. As one example of this there is the 'Holocene temperature conundrum.' If you run our models on all data we have from around 10k to 6k years ago they all show there should have been significant warming. Instead we know there was significant cooling. And the reason for this remains completely unknown. In effect we are trying to forecast many decades into the future using models that break, even on their training data! This is a major problem.

And your perception of warming increasing faster than expected is once again being driven by the media. Our warming has lagged far behind models. For instance the first major climate report was the IPCC's report in 1990. That's nice because it forecast out to 30 years, which is just about now! They predicted a global warming of 0.3C per decade with an uncertainty of 0.2C to 0.5C on the 'business as usual' forecast, which is what we have followed. In reality, we haven't come anywhere near that. You can find various global temperature data, but here [1] are NASA's data. In particular (going decade by decade):

- 1990 = starting point

- 2000 = -0.04 'increase'

- 2010 = 0.3 increase

- 2019 = 0.1 increase

The IPCC was expecting an increase of 0.9 by 2020, with a minimum increase of 0.6. We've increased a bit less than 0.4 degrees. We're not even falling within the bottom end of their rather generous interval. That's, again, a major problem.

You're also misunderstanding that 75% comment. What Wiki (and he) was saying is that the temperature response is nonlinear. He is arguing that there will be a fraction of the expected heating due to a nonlinear response. In particular CO2 concentration levels have increased by about 30% and are at 75% of his expected temperature increase for a doubling of CO2. Does this mean his predictions are wrong, or does it mean the heating will slow? And similarly, we are only 15% of the expected heating for IPCC predictions, which are going in the opposite direction. Are the IPCC wrong, or will the rate of heating accelerate? This is an extremely critical distinction because if it turns out that increasing levels do not result in accelerating heating, then there's basically no problem whatsoever. Note both sides agree we'll continue to see 'the hottest year on [modern] record' for the foreseeable future. This might be what drove you to believe we were seeing more heating than expected.

All this said, I somewhat tend to agree that this is a dumb experiment to be running. I'd much rather roll back emissions, but I think the current science surrounding the arguments for such is running in an increasing number of problems as we start to be able to falisify or validate predictions. They're mostly turning up false (or at the very bottom of ranges), yet the media continues running sensationalized fearmongering nonethless. I think this is irresponsible, at best.

[1] - https://climate.nasa.gov/vital-signs/global-temperature/