Site: Judith Curry

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Climate Etc. is hosted by Dr Judith Curry and provides a forum for climate researchers, academics and technical experts from other fields, citizen scientists, and the interested public to engage in a discussion on topics related to climate science and the science-policy interface.

She is Professor and Chair of the School of Earth and Atmospheric Sciences at the Georgia Institute of Technology and President (co-owner) of Climate Forecast Applications Network (CFAN). She received a Ph.D. in Geophysical Sciences from the University of Chicago in 1982. Prior to joining the faculty at Georgia Tech, she held faculty positions at the University of Colorado, Penn State University and Purdue University. She currently serves on the NASA Advisory Council Earth Science Subcommittee and the DOE Biological and Environmental Science Advisory Committee, and has recently served on the National Academies Climate Research Committee and the Space Studies Board, and the NOAA Climate Working Group. She is a Fellow of the American Meteorological Society, the American Association for the Advancement of Science, and the American Geophysical Union.

Recent Articles

Judith Curry: Ocean Heat Content Surprises

by Judith Curry There have several interesting papers on ocean heat content published in recent weeks, with some very important implications. The first paper has a narrative that ‘the oceans are warming faster than we thought and now the ocean …

2019-01-14 15:53   Click to comment

Judith Curry: Week in review – science edition

by Judith Curry A few things that caught my eye this past week. The longest homogeneous series of grape harvest dates, 1354–2018, and its significance for the understanding of past and present climate [link] Uncertainties in shoreline change reconstructions and …

2019-01-12 14:42   Click to comment

Judith Curry: Sea levels, atmospheric pressure and land temperature during glacial maxima

by Alan Cannell The new tropical lands: a carbon sink during formation and huge source of carbon dioxide and methane when lost to the sea. Why do Sea Level Changes Always Stop at about the Same Heights? Sea water levels …

2019-01-05 02:09   Click to comment

Judith Curry: Reconstructing a dataset of observed global temperatures 1950-2016 from human and natural influences

by Frank Bosse A demonstration that multidecadal variation since 1950 leads to overestimation of the Transient Climate Response (TCR). Introduction Inspired by a recent paper ( Folland et.al 2018), I try to replicate the annual development of the observed global …

2019-01-04 02:38   Click to comment

Judith Curry: National Climate Assessment: A crisis of epistemic overconfidence

by Judith Curry “You can say I don’t believe in gravity. But if you step off the cliff you are going down. So we can say I don’t believe climate is changing, but it is based on science.” – Katherine …

2019-01-02 15:36   Click to comment

Judith Curry: 2018 –> 2019

by Judith Curry Happy New Year! In thinking about what to write for this post, I took a look at the previous end of year posts at Climate Etc. In the early years of the blog, I focused on end …

2018-12-31 20:25   Click to comment

Judith Curry: Week in review – science edition

by Judith Curry A few things that caught my eye this past week. Global trends in wildfire and its impacts. “For the western USA, they indicate little change overall, and also that area burned at high severity has overall declined compared …

2018-12-29 02:46   Click to comment

Judith Curry: Week in review – science edition

by Judith Curry A few things that caught my eye this past week. Re-evaluating the ocean conveyor belt [link] More robust #climate projections of #Arctic sea ice only possible by improving physics in simulations e.g. accounting for melt ponds & …

2018-12-15 14:44   Click to comment

Judith Curry: Cliff Mass: victim of academic political bullying

by Judith Curry There is a disturbing story coming out of the University of Washington surrounding Cliff Mass. In preparing this article, I have received material from a member of the Department of Atmospheric Sciences at the University of Washington. …

2018-12-12 12:21   Click to comment

Judith Curry: 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 …

2018-12-11 16:04   Click to comment

Judith Curry: Politics of climate expertise

by Judith Curry “Concerning the inability of expert knowledge to resolve environmental controversy and the pressing need for a pragmatic reframing of policy problems to allow for solutions based on bipartisan values.” It’s been a while since I’ve done a …

2018-12-03 21:32   Click to comment

Judith Curry: Week in review – science edition

by Judith Curry A few things that caught my eye this past week. Normalized hurricane damage in the continental United States 1900–2017 [link] Pacific Decadal Oscillation and recent oxygen decline in the eastern tropical Pacific Ocean [link] RMSS: The troposphere has …

2018-12-01 20:15   Click to comment

Judith Curry: Sea level rise: what’s the worst case?

by Judith Curry Draft of article to be submitted for journal publication. Well, I hope you are not overdosing on the issue of sea level rise. But this paper is somewhat different, a philosophy of science paper. Sort of how …

2018-11-29 14:54   Click to comment

Judith Curry: Special Report on Sea Level Rise

by Judith Curry I have now completed my assessment of sea level rise and climate change. The complete report can be downloaded here [Special Report- Sea Level Rise]. My preliminary compilation of information was provided in the 7 part Climate …

2018-11-27 14:07   Click to comment

Judith Curry: CAGW: a ‘snarl’ word?

The term ‘CAGW’ has both appropriate and inappropriate usage. Introduction Rational Wiki says: ‘“CAGW”, for “catastrophic anthropogenic global warming”, is a snarl word (or snarl acronym) that global warming denialists use for the established science of climate change. A Google …

2018-11-26 11:00   Click to comment

Judith Curry: Is RCP8.5 an impossible scenario?

by Judith Curry In considering ‘worst case’ climate change impacts, we first need to assess the realistic worst case for global carbon emissions. The recently published U.S. National Climate Assessment shows that we are currently on track for RCP8.5. The …

2018-11-24 16:41   Click to comment

Judith Curry: Resplandy et al. Part 4: Further developments

By Nic Lewis There have been further interesting developments in this story Introduction The Resplandy et al. (2018) ocean heat uptake study (henceforth Resplandy18) is based on measured changes in the O2/N2 ratio (δO2/N2) and CO2 atmospheric concentration. These are …

2018-11-23 17:36   Click to comment

Judith Curry: Admitting mistakes in a ‘hostile environment’

by Judith Curry Reflections on Nic Lewis’ audit of the Resplandy et al. paper. In response to Nic Lewis’ two blog posts critiquing the Resplandy et al. paper on ocean temperatures, co-author Ralph Keeling acknowledges the paper’s errors with these …

2018-11-19 14:15   Click to comment

Judith Curry: Resplandy et al. Part 3: Findings regarding statistical issues and the authors’ planned correction

By Nic Lewis Introduction The Resplandy et al. (2018) ocean heat uptake study (henceforth Resplandy18) is based on measured changes in the O2/N2 ratio of air sampled each year, compared to air stored in high pressure tanks originally sampled in …

2018-11-17 16:37   Click to comment

Judith Curry: The catastrophe narrative

by Andy West A narrative propagated by emotive engagement, not veracity. Introduction Within the public domain, there is a widespread narrative of certainty (absent deep emissions cuts) of near-term (decades) climate catastrophe. This narrative is not supported by mainstream science …

2018-11-15 02:45   Click to comment

Judith Curry: Week in review – science edition

by Judith Curry A few things that caught my eye this past week. “Fingerprints of internal drivers of Arctic sea ice loss in observations and model simulations” [link] Conflicting Measurements Reduce Uncertainty in Climate Science [link] California’s new earthquake warnings …

2018-11-10 20:01   Click to comment

Judith Curry: Resplandy et al. Part 2: Regression in the presence of trend and scale systematic errors

By Nic Lewis In a recent article I set out why I thought that the trend in ΔAPOClimate was overstated, and its uncertainty greatly understated, in the Resplandy et al. ocean heat uptake study. In this article I expand on the …

2018-11-07 22:28   Click to comment

Judith Curry: A major problem with the Resplandy et al. ocean heat uptake paper

by Nic Lewis Obviously doubtful claims about new research regarding ocean content reveal how unquestioning Nature, climate scientists and the MSM are. On November 1st there was extensive coverage in the mainstream media[i] and online[ii] of a paper just published …

2018-11-06 17:17   Click to comment

Judith Curry: Week in review – science edition

by Judith Curry A few things that caught my eye this past week. A new gem from Steve McIntyre: New post at Climate Audit on North American tree ring network of PAGES2K (2013) and PAGES (2017). Bristlecone addiction continues unabated -heroin …

2018-10-27 18:33   Click to comment

Judith Curry: Remarkable changes to carbon emission budgets in the IPCC Special Report on Global Warming of 1.5C

by Nic Lewis A close reading of Chapters 1 and 2 of the IPCC Special Report on Global Warming of 1.5°C (SR15) reveals some interesting changes from the IPCC 5th Assessment Report (AR5), and other science-relevant statements. This article highlights …

2018-10-18 20:11   Click to comment

Judith Curry: Climate uncertainty monster: What’s the worst case?

by Judith Curry On possibilities, known neglecteds, and the vicious positive feedback loop between scientific assessment and policy making that has created a climate Frankenstein. I have prepared a new talk that I presented yesterday at Rand Corp. My contact …

2018-10-11 16:10   Click to comment

Judith Curry: 1.5 degrees

by Judith Curry The IPCC Special Report on Global Warming of 1.5C is now published [link]. The good news is that it is better written and with better diagrams — no more turgid prose and obscure diagrams that we’ve come …

2018-10-08 15:56   Click to comment

Judith Curry: Week in review – science edition

by Judith Curry A few things that caught my eye this past week. How well do stratospheric reanalyses reproduce high-resolution satellite temperature measurements? https://buff.ly/2OnYyIS Warming ocean waters intensified devastating 2017 Atlantic hurricane season: [link] On the statistical significance of climatic …

2018-09-29 01:00   Click to comment

Judith Curry: The most amazing greening on Earth

by Patrick J. Michaels We’ve long been fond of showing the satellite evidence for planetary greening caused by increasing carbon dioxide, particularly the work of Zhu et al.(2016): Figure 1: Trends in Leaf Area Index around the planet. Note the …

2018-09-19 21:31   Click to comment

Judith Curry: Hurricane Florence: climate dynamics context

by Judith Curry “Impending massive hurricanes bring the best out of weather twitter and the worst out of climate twitter” – Joseph Maykut Every time we have a tropical cyclone landfall in the U.S., there is an explosion of public …

2018-09-18 20:50   Click to comment


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