Search Results for: Nic Lewis

Nic Lewis vs the UK Met Office

by Judith Curry Julia Slingo, Chief Scientist at the UK Met Office,   has responded to Nic Lewis’ critique of UK Met Office’s report on the pause.

Nic Lewis on the UK Met Office on the pause

by Nic Lewis These comments constitute a response to erroneous statements and misrepresentations made in a report published by the Met Office in July 2013: “The recent pause in global warming (3): What are the implications for projections of future … 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.

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

Comment by Cowtan & Jacobs on Lewis & Curry 2018 and Reply: Part 1

By Nic Lewis A comment on LC18 (recent paper by Lewis and Curry on climate sensitivity)  by Cowtan and Jacobs has been published, along with our response.

Quantifying the anthropogenic contribution to atmospheric CO2

by Fred Haynie I conclude that, the IPCC’s model assumptions that long-term natural net rate of accumulation is constant and anthropogenic emission rates are the only contributor to total long-term accumulation of atmospheric CO2, is false.

Lewis and Curry: Climate sensitivity uncertainty

by Judith Curry Our new paper on climate sensitivity is now published.

Climate sensitivity: technical discussion thread

by Judith Curry The Lewis and Crok paper is stimulating much discussion; unfortunately little of it is technical.  Lets devote a thread to technical discussion on the issues the raise.

Lewis and Crok: Climate less sensitive to CO2 than models suggest

by Judith Curry Nic Lewis and Marcel Crok have published a new report on climate sensitivity.

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

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

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

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

COVID-19: Updated data implies that UK modelling hugely overestimates the expected death rates from infection

By Nic Lewis Introduction There has been much media coverage about the danger to life posed by the COVID-19 coronavirus pandemic. While it is clearly a serious threat, one should consider whether the best evidence supports the current degree of … Continue reading

2020

by Judith Curry Happy New Year!

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.

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

Resplandy et al. Part 5: Final outcome

By Nic Lewis The editors of Nature have retracted the Resplandy et al. paper.

Week in review – science edition

by Judith Curry A few things that caught my eye this past week.

Critique of the new Santer et al. (2019) paper

by Ross McKitrick Ben Santer et al. have a new paper out in Nature Climate Change arguing that with 40 years of satellite data available they can detect the anthropogenic influence in the mid-troposphere at a 5-sigma level of confidence. … Continue reading

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

2018 –> 2019

by Judith Curry Happy New Year!

Climate sensitivity to cumulative carbon emissions

By Nic Lewis An observational estimate of transient (multidecadal) warming relative to cumulative CO2 emissions is little over half that per IPCC AR5 projections. AR5 claims that CO2-caused warming would be undiminished for 1000 years after emissions cease, but observations … Continue reading

Resplandy et al. Part 4: Further developments

By Nic Lewis There have been further interesting developments in this story

Admitting mistakes in a ‘hostile environment’

by Judith Curry Reflections on Nic Lewis’ audit of the Resplandy et al. paper.