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Search Results for: Nic Lewis
Resplandy et al. Part 5: Final outcome
By Nic Lewis The editors of Nature have retracted the Resplandy et al. paper.
Admitting mistakes in a ‘hostile environment’
by Judith Curry Reflections on Nic Lewis’ audit of the Resplandy et al. paper.
Posted in Sociology of science
COVID-19: evidence shows that transmission by schoolchildren is low
By Nic Lewis Much fuss has been made in the UK, not least by teachers’ unions, about recommencing physical school attendance. As this issue applies to many countries, I thought it worth highlighting research findings in Europe.
Posted in Uncategorized
Emergent constraints on TCR and ECS from historical warming in CMIP5 and CMIP6 models
By Nic Lewis This is a brief comment on a new paper[i] by a mathematician in the Exeter Climate Systems group, Femke Nijsse, and two better known colleagues, Peter Cox and Mark Williamson. I note that Earth Systems Dynamics published … Continue reading
Explaining the Discrepancies Between Hausfather et al. (2019) and Lewis&Curry (2018)
by Ross McKitrick Challenging the claim that a large set of climate model runs published since 1970’s are consistent with observations for the right reasons.
Posted in climate models, Sensitivity & feedbacks
A sensible COVID-19 exit strategy for the UK
By Nic Lewis The current approach A study by the COVID-19 Response Team from Imperial College (Ferguson et al. 2020[i]) appears to be largely responsible for driving UK government policy actions. The lockdown imposed in the UK appears, unsurprisingly, to … Continue reading
Posted in Uncategorized
Is ocean warming accelerating faster than thought?
by Nic Lewis *** UPDATE : response to comments by Zeke Hausfather appended There are a number of statements in Cheng et al. (2019) ‘How fast are the oceans warming’, (‘the paper’) that appear to be mistaken and/or potentially misleading. … Continue reading
Posted in climate models, IPCC, Oceans
IPCC AR6: Breaking the hegemony of global climate models
by Judith Curry A rather astonishing conclusion drawn from reading the fine print of the IPCC AR6 WG1 Report.
Posted in Uncategorized
Comment by Cowtan & Jacobs on Lewis & Curry 2018 and Reply: Part 2
By Nic Lewis In an earlier article here I discussed a Comment on Lewis and Curry 2018 (LC18) by Kevin Cowtan and Peter Jacobs (CJ20), and a Reply from myself and Judith Curry recently published by Journal of Climate (copy … Continue reading
Posted in climate models, Sensitivity & feedbacks, Uncategorized
Tagged climate feedback, climate sensitivity
Compensation between cloud feedback + ECS and aerosol-cloud forcing in CMIP6 models
By Nic Lewis An important paper, Wang et al.[1], on the relationships between cloud feedback, climate sensitivity (ECS) and aerosol-cloud interaction in the latest generation of global climate models (CMIP6) has just been published. The key conclusion of the paper … Continue reading
Posted in climate models, Sensitivity & feedbacks
Herd immunity to COVID-19 and pre-existing immune responses
By Nic Lewis I showed in my May 10th article Why herd immunity to COVID-19 is reached much earlier than thought that inhomogeneity within a population in the susceptibility and in the social-connectivity related infectivity of individuals would reduce, in my … Continue reading
Posted in Uncategorized
Week in review – science edition
by Judith Curry A few things that caught my eye this past week.
Posted in Week in review
Why herd immunity to COVID-19 is reached much earlier than thought – update
By Nic Lewis I showed in my May 10th article Why herd immunity to COVID-19 is reached much earlier than thought that inhomogeneity within a population in the susceptibility and in the social-connectivity related infectivity of individuals would reduce, in my … Continue reading
Posted in Uncategorized
When does government intervention make sense for COVID-19?
By Nic Lewis Introduction I showed in my last article that inhomogeneity within a population in the susceptibility and infectivity of individuals would reduce the herd immunity threshold, in my view probably very substantially, and that evidence from Stockholm County … Continue reading
Posted in Uncategorized
New paper suggests historical period estimates of climate sensitivity are not biased low by unusual variability in sea surface temperature patterns
By Nic Lewis An important new paper by Thorsten Mauritsen, Associate Professor at Stockholm University[i] and myself has just been accepted for publication (Lewis and Mauritsen 2020)[ii]. Its abstract reads:
Posted in Sensitivity & feedbacks
COVID-19: why did a second wave occur even in regions hit hard by the first wave?
By Nic Lewis Introduction Many people, myself included, thought that in the many regions where COVID-19 infections were consistently reducing during the summer, indicating that the applicable herd immunity threshold had apparently been crossed, it was unlikely that a major … Continue reading
Posted in Uncategorized
Imperial College UK COVID-19 numbers don’t seem to add up
By Nic Lewis Introduction and summary A study published two weeks ago by the COVID-19 Response Team from Imperial College (Ferguson20[1]) appears to be largely responsible for driving UK government policy actions. The study is not peer reviewed; indeed, it … Continue reading
Posted in Uncategorized
Committed warming and the pattern effect
By Nic Lewis A critique of the paper “Greater committed warming after accounting for the pattern effect”, by Zhou, Zelinka, Dessler and Wang.
Posted in Sensitivity & feedbacks
3 degrees C?
by Judith Curry Is 3 C warming over the 21st century now the ‘best estimate’? A reframing of how we think about climate change over the 21st century, and my arguments for 1 C.
Posted in Sensitivity & feedbacks
Osman et al. 2021: a flawed Nature paleoclimate paper?
By Nic Lewis This article concerns the paper “Globally resolved surface temperatures since the Last Glacial Maximum” by Matthew Osman et al.[2] (hereafter Osman 2021) published by Nature in November 2021.
Posted in Uncategorized
Gregory et al 2019: Unsound claims about bias in climate feedback and climate sensitivity estimation
By Nic Lewis The recently published open-access paper “How accurately can the climate sensitivity to CO2 be estimated from historical climate change?” by Gregory et al.[i] makes a number of assertions, many uncontentious but others in my view unjustified, misleading … Continue reading
Posted in Sensitivity & feedbacks, Uncategorized
Tagged climate feedback, climate sensitivity, regression, statistics
Interview: Climate Change – A Different Perspective with Judith Curry: Part II
by Judith Curry My follow up interview on the Strong And Free podcast [link].
Posted in Uncategorized
The progress of the COVID-19 epidemic in Sweden: an analysis
By Nic Lewis The course of the COVID-19 pandemic in Sweden is of great interest, as it is one of very few advanced nations where no lockdown order that heavily restricted people’s movements and other basic freedoms was imposed. As … Continue reading
Posted in Uncategorized
Why herd immunity to COVID-19 is reached much earlier than thought
By Nic Lewis Introduction A study published in March by the COVID-19 Response Team from Imperial College (Ferguson20[1]) appears to have been largely responsible for driving government actions in the UK and, to a fair extent, in the US and … Continue reading
Posted in Uncategorized