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Reto Knutti
Professor, ETH Zürich
Expertise: Climate projections, Attribution, Feedbacks, and Sensitivity
Details:
ARTICLES REVIEWED
Article in The Guardian misleads readers about sensitivity of climate models by narrowly focusing on single study
in The Guardian, by Jonathan Watts
— 18 Jun 2020
"The article correctly reports that the most recent versions of some climate models estimate more warming for a given increase in CO2 concentrations. It is also correct in highligh..
Financial Post commentary misleads about warming effect of greenhouse gas emissions by cherry-picking studies
in Financial Post, by Ross McKitrick
— 22 Jun 2018
"This article selectively cherry-picks studies showing low climate sensitivity, leaving out whole lines of evidence (e.g. paleoclimate studies) that agree with the sensitivity esti..
CLAIMS REVIEWED
YouTube video falsely claims that climate models systematically over-estimated warming and that we are heading towards an ice age
CLAIM
"The official observed temperatures are coming consistently below the scary global warming numbers"; "Melting polar ice triggers ice age"
SOURCE: Ben Davidson, Suspicious0bservers
Published: 27 May 2021
VERDICT
Caleb Rossiter falsely claims that climate models are “running very hot”
CLAIM
The models predicted about three times the amount of warming in the world we’ve seen since [1988].
SOURCE: Caleb Rossiter, The Hill
Published: 11 Mar 2019
VERDICT
On BBC Newsnight, Myron Ebell falsely claims climate models exaggerate warming
CLAIM
The rate of warming according to the data is much slower than the models used by the IPCC
SOURCE: Myron Ebell, BBC Newsnight
Published: 09 Oct 2018
VERDICT
Prof. John Christy incorrectly claims to show climate models are too sensitive to carbon dioxide
CLAIM
the real atmosphere is less sensitive to CO2 than what has been forecast by climate models
SOURCE: John Christy, The Daily Caller
Published: 01 Dec 2017
VERDICT
Daily Wire article incorrectly claims climate models have overestimated warming
CLAIM
climate models have overestimated the amount of global warming and failed to predict what climatologists call the warming ‘hiatus’
SOURCE: James Barrett, The Daily Wire
Published: 22 Sep 2017
VERDICT
Heartland Institute report’s claim that climate models are too sensitive to CO2 does not reflect evidence
CLAIM
[climate models] systematically over-estimate the sensitivity of climate to carbon dioxide ... and modelers exclude forcings and feedbacks that run counter to their mission
SOURCE: Craig Idso, Robert Carter, S. Fred Singer, Heartland Institute
Published: 23 May 2017
VERDICT