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@ProfMarkMaslin | |||||
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#climatechange science has made a huge difference. No longer are we predicting 5 deg warming as policies have slowed carbon emissions.
Next challenge is to have policies to get to net zero by 2050. Given our past geopolitical success we could do it!
nature.com/articles/d4158… pic.twitter.com/08W3RZ9ivN
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Robert Rohde
@RARohde
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31. sij |
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Gotta say, I'm having trouble seeing the "huge difference". pic.twitter.com/fSFQPubu44
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Zeke Hausfather
@hausfath
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31. sij |
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For what its worth, IS92-A is a bit above RCP6.0, which is in the range of outcomes consistent with current policies. We are far from bending down the curve though, which is whats needed to get to below-2C. pic.twitter.com/ON6mFJuTl4
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Ian Sinclair
@IanJSinclair
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3. velj |
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Hi Mark. My understanding is 2 or 3 degrees at 2100 is very dangerous because it is unlikely to stablise at this point, and could lead to uncontrolled temperature increase. Is this wrong? @medialens @GreenRupertRead
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Mark Maslin
@ProfMarkMaslin
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3. velj |
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In all of Earth history we have no evidence of runaway global warming. We have evidence of sharp rapid rises in global temperatures but never runaway. So we have to balance the real scary science with the apocalyptic views of some activist - who try to scary children!
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Paul Maidowski
@_ppmv
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31. sij |
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First read this as a (good) joke. Which geopolitical success exactly? Are y'all following the news & geopolitics at all?
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Paul Roundy
@PaulRoundy1
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31. sij |
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It seems like energy markets have dominated these changes rather than top down controls/policies?
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Ken Rice
@theresphysics
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31. sij |
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Do you think that this would have happened in the absence of people highlighting the risks associated with climate change?
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Frederick Guy
@FrederickGuy4
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31. sij |
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As an *emissions* pathway 8.5 has become highly unlikely, we are told. But as a *concentration* pathway (it's in the name, RCP) does our optimism not depend on feedbacks about which there is far more uncertainty?
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Ken Rice
@theresphysics
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31. sij |
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Yes. However, if the emission projections are reasonable, then the feedbacks required to get to 8.5W/m^2 are probably now on the higher end of what is possible. However, could still turn RCP6 into RCP7, for example.
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Alexander Ač
@Lacertko
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31. sij |
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Which policies? You mean emission trading scheme?
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falafeldiaper
@falafeldiaper1
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31. sij |
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Does make some rich
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