Judith Curry

Judith Curry - 2017-05-20 - Original post - cached version

by Judith Curry

A few things that caught my eye this past week.

An overview of studies of observed climate change in the Hindu Kush Himalayan (HKH) region [link]

Study: sea level rise acceleration still uncertain, we won’t have statistical certainty until 2020-2030 [link]...

Judith Curry - 2017-05-19 - Original post - cached version

by Judith Curry

The many dimensions of the climate uncertainty monster.

Bret Stephens’ climate change op-ed of several weeks ago Climate of Complete Certainty spawned a number of articles related to uncertainty and climate change.

Andy Revkin’s article in response was...

Judith Curry - 2017-05-14 - Original post - cached version

by Peter Davies

Scenarios to understand how load, wind, solar PV and storage interact and whether a 100% renewable grid for Texas is technically feasible.

Given the stated policy of the new USA administration this might not seem the best time to explore whether renewable...

Judith Curry - 2017-05-09 - Original post - cached version

by Planning Engineer

How feasible are calls for 100% renewable energy?

In previous columns I’ve discussed characteristics of wind and solar generation that will result in increasing concerns as they grow to provide an increase portion of the electric supply. PJM has recently made...

Judith Curry - 2017-05-02 - Original post - cached version

by Judith Curry

The scary emergence of Nye’s Quadrant in dominating the public discourse on climate change.

If you are unfamiliar with Pasteur’s Quadrant, read my previous post [link].  The focus of my previous post was on use-inspired basic research.  I struggled with the 4th...

Judith Curry - 2017-04-30 - Original post - cached version

by Javier

First in a two part series on Holocene climate variability.

Summary: Holocene climate is characterized by two initial millennia of fast warming followed by four millennia of higher temperatures and humidity, and a progressively accelerating cooling and drying for the...

Judith Curry - 2017-04-24 - Original post - cached version

By Planning Engineer

On April 14th, 2017 Rick Perry wrote a memo headed “STUDY EXAMINING ELECTRICITY MARKETS AND RELAIBILITY” calling for study to investigate how long term energy trends my impact the grid.

My “sciencey” friends on social media are linking to this article, “Energy...

Judith Curry - 2017-04-23 - Original post - cached version

by Makarieva A.M., Gorshkov V.G., Nefiodov A.V., Chikunov A.V., Sheil D., Nobre A.D., Li B.-L.

New questions and ideas about hurricanes and their power.

Predicting the intensity of tropical cyclones, hurricanes and typhoons is a recognized challenge. We are grateful to Judith for...

Judith Curry - 2017-04-22 - Original post - cached version

by Judith Curry

Pondering some thorny issues regarding science, its place in society and its relationship to politics.

Well today is the much-hyped March for Science. Last month I wrote a post Exactly what are scientists marching for?  Since my previous post, something like a...

Judith Curry - 2017-04-21 - Original post - cached version

by Judith Curry

Put the ‘consensus’ to a test, and improve public understanding, though an open and adversarial process. – Steve Koonin

Steve Koonin has an op-ed published today in the Wall Street Journal:  A ‘Red Team’ Exercise Would Strengthen Climate Science  [link].  Annotated...

Judith Curry - 2017-04-18 - Original post - cached version

by Nic Lewis

Kyle Armour has a new paper out in Nature Climate Change: “Energy budget constraints on climate sensitivity in light of inconstant climate feedbacks”.

Its two key claims are:

“global climate models robustly show that feedbacks vary over time, with a strong...

Judith Curry - 2017-04-15 - Original post - cached version

by Judith Curry

Climate Feedback has interviewed a number of scientists regarding the recent House Hearing on climate science.

The article:  Scientists reactions to the US House Science Committee hearing on climate science.

The scientists that were interviewed:  James...

Judith Curry - 2017-04-12 - Original post - cached version

by Judith Curry

One needs to ask good questions about whose claims to trust and why. – Sheila Jasanoff

Sheila Jasanoff has a new essay, entitled What Should Democracies Know? that provides some interesting perspective on ‘alt-facts’, etc. Excerpts:

The “post-truth,” “alt-...

Judith Curry - 2017-04-10 - Original post - cached version

by Judith Curry

Updated AGU Ethics Policy available for member comment.  Proposed new language identifies harassment and bullying as scientific misconduct.

From AGU News:  Updated AGU Ethics Policy Available for Member Comment.  Excerpts:

The current policy is silent on the...

Judith Curry - 2017-04-08 - Original post - cached version

by Judith Curry

A few things that caught my eye this past week.

Freshening of the Labrador Sea as a trigger for Little Ice Age development [link] 

Twentieth-century Trends in the...

Judith Curry - 2017-04-07 - Original post - cached version

by Rud Istvan

A novel hypothesis on the role of CO2 in the technological transition from hunter/gatherers to sedentary agriculture.

This guest post has been formulating for several weeks. It summarizes a fascinating hypothesis in a guest post by Don Healy at WUWT some weeks ago,...

Judith Curry - 2017-04-05 - Original post - cached version

by Judith Curry

Two excellent articles about science, facts, and post-factualism.

Sabine Hossenfelder just published a superb essay in Nature Physics, entitled Science needs reason to be trusted.  Subtitle: That we now live in the grip of post-factualism would seem naturally...

Judith Curry - 2017-04-02 - Original post - cached version

by Judith Curry

A few things that caught my eye this past week.

Sun’s impact on climate quantified for the first time [link]

North Pacific 20th century decadal-scale variability is unique for the past 342 years [link]

A reconstructed South Atlantic Meridional...

Judith Curry - 2017-03-31 - Original post - cached version

by Judith Curry

House Science Committee Hearing:  where the so-called ‘deniers’ behave like scientists and the defender of the establishment consensus . . . lies.

Well, I’ve returned home following the recent Hearing, and have had a chance to reflect, as well as follow the twitter...

Judith Curry - 2017-03-29 - Original post - cached version

by Judith Curry

My testimony at the House Science Committee Hearing on Climate Science: Assumptions, Policy Implications and the Scientific Method.

The text of my written testimony is here [Curry house science testimony mar 17].   I really enjoyed preparing this testimony, it...

Judith Curry - 2017-03-25 - Original post - cached version

by Judith Curry

“I think this should be the way forward, translating [overarching climate goals] into ‘policy portfolios’ and then asking policymakers if they are going to do it or not.” — Oliver Geden

A provocative paper has been published in Science:

A roadmap for rapid...

Judith Curry - 2017-03-22 - Original post - cached version

by Judith Curry

Witnesses:  John Christy, Judith Curry, Michael Mann and Roger Pielke Jr.

The hearing will be held next week, March 29.  The announcement for the Hearing is [here].

I’ve completed my written testimony, I will post it Wednesday once the Hearing has commenced...

Judith Curry - 2017-03-20 - Original post - cached version

by Judith Curry

I’m looking for ideas and discussion on ways to improve what I regard to be a broken interface between climate science and policy.

I’m preparing a new document (I’ll be able to post it next week).  I’m struggling with how to frame some recommendations for improving...

Judith Curry - 2017-03-17 - Original post - cached version

by David Hagen

Should California plan for permanent drought or climate persistence?

After six years of drought, California was deluged in 2017 by sequential “atmospheric rivers” causing the highest January/February rainfall on recent record. California’s Oroville Dam experienced...

Judith Curry - 2017-03-11 - Original post - cached version

by Judith Curry

My analysis of EPA Administrator Scott Pruitt’s recent statements on climate change, and the response to his statements.

Last week, there was a controversial interview of Scott Pruitt on CNBC. A sampling of the headlines reporting on his interview:


Judith Curry - 2017-03-06 - Original post - cached version

by Judith Curry

The smartest people on the planet want to oppose Trump & the best they can come up with is a march in support of themselves? – Roger Pielke Jr

A mega March for Science has been planned for Earth Day (April 22) in Washington DC.  The web site states:


Judith Curry - 2017-03-05 - Original post - cached version

by Judith Curry

A few things that caught my eye this past week (well actually, the past month).

Very good overview on the Madden Julian Oscillation and its implications for rainfall  by Carl Schreck [link]

NOAA’s atmospheric river information page [link]


Judith Curry - 2017-02-26 - Original post - cached version

by Kip Hansen

‘Alternative facts’ is a term in law to describe inconsistent sets of facts put forth in a court given that there is plausible evidence to support both alternatives. The term is also used to describe competing facts for the two sides of the case. – Wikipedia


Judith Curry - 2017-02-25 - Original post - cached version

by Judith Curry

In this age of politicization of science and activist scientists, the Brussel Declaration offers some very good advice and deserves to be widely read and discussed.

The authors of the Brussel Declaration have written an essay entitled Policy Making Manifesto:...

Judith Curry - 2017-02-21 - Original post - cached version

by Andy West

On the origin of public skepticism and its entanglement with science.


Lewandowsky has a habit of raising fundamental truths1 and asking pertinent questions, yet then for the climate change domain turning psychology (and according to analyses his...

Judith Curry - 2017-02-17 - Original post - cached version

by Javier

Dansgaard-Oeschger (D-O) events are the most dramatic and frequent abrupt climate change events in the geological record. They are usually explained as the result of an Atlantic Ocean salinity oscillation paced by internal variability. Available evidence however supports that...

Judith Curry - 2017-02-11 - Original post - cached version

by Judith Curry

In view of recent controversies, numerous criticisms have been made about my ‘role,’ with expectations of things that I ‘should’ be doing.

From twitter:

“I do think JC should take a bigger role in reeling in hoaxers/denialists that use her as a guide.”

Judith Curry - 2017-02-11 - Original post - cached version

by Judith Curry

Interesting article in The Atlantic, but I’m still trying to figure out what is being ‘denied.’

The Atlantic has an interesting article How the New Climate Denial is Like the Old Climate Denial.  Subtitle: Both are excuses for inaction.

It seems that I am...

Judith Curry - 2017-02-06 - Original post - cached version

by Judith Curry

Not surprisingly, John Bates’ blog post and David Rose’s article in the Mail on Sunday have been receiving some substantial attention.

Most journalists and people outside of the community of establishment climate scientists ‘get it’ that this is about the process...

Judith Curry - 2017-02-05 - Original post - cached version

by John Bates

A look behind the curtain at NOAA’s climate data center.

I read with great irony recently that scientists are “frantically copying U.S. Climate data, fearing it might vanish under Trump” (e.g., Washington Post 13 December 2016). As a climate scientist formerly...

Judith Curry - 2017-02-03 - Original post - cached version

“one of the real tragedies that totally distorted the debate over climate change was that it got tied into the solution in a way that if you accepted the first you had to accept the second. And I think that was profoundly wrong.” – Newt Gingrich

At the annual meeting of the National...

Judith Curry - 2017-01-30 - Original post - cached version

by Roger Caiazza

At this time there is quite a bit of noise about potential problems if Scott Pruitt is confirmed to head EPA because he would “hamstring EPA’s authority to set nationwide environmental standards”.

As I understand it he is proposing to cooperate more with the...

Judith Curry - 2017-01-29 - Original post - cached version

by Judith Curry

A major disconnect in the discourse surrounding climate change is interpretation of the ‘threat’ of climate change.

Last week I attended the annual meeting of the American Meteorological Society in Seattle.  It was a very good meeting; once the talks are online, I...

Judith Curry - 2017-01-25 - Original post - cached version

by Judith Curry

A seismic shift is occurring in a number of federal agencies.

Some headlines from Tuesday:

Trump silences scientists at EPA, USDA  A message sent to EPA staff on Monday prohibits staff from creating press releases, blogs, messages, or any social media...

Judith Curry - 2017-01-21 - Original post - cached version

by Judith Curry

A few things that caught my eye this past week.

Ancient warm period things at bigger than expected sea level rise.  I think they might be drawing the wrong conclusion here? [link]


Judith Curry - 2017-01-21 - Original post - cached version

by Monte Naylor

A comparison of NOAA-computed temperature trends with the “raw” historical temperature data.

The global historical surface temperature record is presented as the fundamental evidence for global warming. The climate divisions of many official agencies such as NOAA...

Judith Curry - 2017-01-17 - Original post - cached version

by Judith Curry

The Social Cost of Carbon is emerging as a major source of contention in the Trump Administration.

Andy Revkin has an article summarizing the issue:  Will Trump’s climate team accept any social cost of carbon?  Excerpts:

But there’s probably no more...

Judith Curry - 2017-01-16 - Original post - cached version

by Clive Hambler

Reflections on the stabilization of Earth’s climate by life.

People frequently believe the claim that basic physics, established in the 19th Century, is sufficient to predict that Earth will warm in response to increasing CO2. However, I argue here that negative...

Judith Curry - 2017-01-14 - Original post - cached version

by Judith Curry

A round-up of recent articles from around the world about water — too little, too much, plus new technology and policy ideas.

Too little

Syrian water wars: Damascus still without water as battle for springs enters endgame [link]

SYRIA: Official says...

Judith Curry - 2017-01-10 - Original post - cached version

by Judith Curry

Some reflections on my transition from academic climate research to private sector weather forecasting and regional climate change assessments.

I’ve received thousand of emails, tweets, etc. regarding my retirement from Georgia Tech.  Two messages motivated the...

Judith Curry - 2017-01-08 - Original post - cached version

by Judith Curry

A few things that caught my eye this past week.

Fossil leaves bear witness to ancient carbon dioxide levels [link]

Paul Homewood: Two satellite datasets agree: The Pause lives on: ‘No warming for the last 18 years’ [link]

Wood stoves rapidly...

Judith Curry - 2017-01-04 - Original post - cached version

by Judith Curry

Two new papers have focused on the quality, uncertainties and  interpretation of global sea surface temperature data.

A call for new approaches to quantifying biases in observations of sea-surface temperature

Elizabeth Kent, John Kennedy, Thomas Smith, Shoji...

Judith Curry - 2017-01-03 - Original post - cached version

by Judith Curry

Effective January 1, I have resigned my tenured faculty position at Georgia Tech.

Before reflecting on a range of things, let me start by answering a question that may have popped into your head: I have no plans to join the Trump administration (ha ha).


Judith Curry - 2017-01-02 - Original post - cached version

by Judith Curry

Michael Liebrich has written an extremely insightful (not to mention clever) article  entitled It’s a new year and time to face reality.

I’m reproducing this in its entirety, since you have to read the whole thing, and then read it backwards.

The world will...

Judith Curry - 2016-12-31 - Original post - cached version

by Judith Curry

2016 was ‘extremely likely’ to have been a memorable year.

Brexit and the election of Donald Trump as U.S. President were the big events of 2016.  Among many other things, these events perhaps herald Skeptical climate scientists come in from the cold.



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