@mozart
"A ‘proponent of climate change’.....but a proponent that accepts the
models are woefully wrong. It’s not black and white Stavie, like most
things in life it’s shades of grey."
Woeful is your choice of words not the authors of the those papers.
Why do you think those researchers behind these papers are not coming to the same conclusions as you? It's because they are not cheery picking only the models that proved to be inaccurate, nor are they conflating inaccuracies with one specific models or models that are specific to one region., with multiple global models. Even in the articles I linked to about various climate models, some of them where not accurate, mistakes will be made, factors overlooked etc, no one is claiming a 100% track record of success. but the majority of them have proven to be correct.
"So the Satellite data shows a different result, so it has to be corrected....typical."
That's another standard error of armchair climate skeptics, I'll quote Carbon Brief on this one.
A criticism sometimes levied at the
surface temperature record is that it goes through a series of
adjustments to correct for issues, such as missing data, changes in
instrumentation, movement of stations, and human or technical error.
This process is known as homogenization and, despite being a well-understood scientific practice, has been used by some climate-skeptic commentators as evidence that scientists are "fiddling" the data to overstate the amount of warming we’ve seen.
But while the surface data routinely
receives interrogation, the fact that the raw satellite data goes
through a far more extensive “adjustment” process often goes
undiscussed, says Zeke Hausfather from Berkeley Earth, a group set up in in 2010 to independently assess the surface temperature record. He tells Carbon Brief:
“[Satellites] do not
directly measure temperatures, and are subject to large systemic biases
due to orbital decay, diurnal sampling drifts, changes in the satellite
used (there are 13 or so different ones that span the period from
1979-present).”
Adjustments to the satellite data to
account for these issues are just as necessary as those to the surface
record, says Hausfather. But the uncertainty in the measurements is much higher and varies between the two different groups collecting the satellite data. He explains:
“Correcting for these
biases is not straightforward, and different choices in correction
parameters (adjustments, if you will) can lead to very different trends
during the period from 1979-present.”
Historically, the satellite record
has changed much more than the surface record ever has, Hausfather tells
Carbon Brief. In other words, he says:
“If you don’t like adjustments, you really shouldn’t use the satellite record.”
Mozart, by your logic if we can't adjust for biases that interfere in measurements we would have to accept temperature readings from measuring equipment caught in a forest fires for example.
"And yes the Modellers are ignoring natural variation....they attribute the full 1.2 degrees to man made causes."
To which natural variations do you refer too?
"I’ll ask you the same question which Shark is dodging....what percentage
of the total Greenhouse effect is generated by man made gasses. "Its something like 0.013% I believe, I'm open to correction though. Are you about to go back to its only a trace gas argument again and therefore it can't have any significant effect? I thought we have already been through that.