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All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.

Recommended supplemental reading:

Should Scientists Advocate on the Issue of Climate Change? by Ingfei Chen, UnDark, Apr 24, 2018

sailingfree at 02:03 AM on 26 April 2018

Climate Science Denial Explained: The Denial Personality

Leslie @4,
You might make some theological arguments to your religious friend.
One would be that God gave man the power to affect the climate, and is simply watching what we do with it.
“… let them have dominion over the fish of the sea, and over the fowl of the air, and over the cattle, and over all the earth,….” (Genesis 1.26)

Another is that that God will not necessarily keep the Earth always comfortable for mankind. After all, as he banished Adam and Eve from the paradise of Eden He said:
“… cursed is the ground for thy sake; in sorrow shall thy eat out of it … in the sweat of thy face shalt thou eat bread,…” (Genesis 3.17,19)

Another time God was not happy with man, and so flooded the earth, originally with the intent of eliminating all of mankind:
“And God saw the wickedness of man was great in the earth, and that every imagination of the thoughts of his heart was only evil continually.” (Genesis 6.5) “… and so the Lord said  I will destroy man whom I have created from the face of the earth; …” (Genesis 6.7)

He also caused some heating of Sodom and Gomorrah.

And so perhaps now He has seen what man did in the twentieth century, WWI, WWII, and the holocaust, and in mid-century became angry. Perhaps now He is allowing the Globe to heat up enough for more drought, famine, and war (but no world-wide flood, of course, just rainbows).

This warming would be consistent with Relevation, where in 8.7 says ‘… fire, which fell on the earth; and a third of the earth was burnt up, and a third of the trees were burnt up, and all green grass was burnt up.”

Your friend should be asked to give Biblical arguments for his religious belief that God will keep the Planet comfortable for mankind.

One Planet Only Forever at 01:57 AM on 26 April 2018

Climate Science Denial Explained: Tactics of Denial

nigelj,

A major incorrect development of the developed socioeconomic-political systems is the way people in the systems/environments are tempted to develop to be less caring and behave less ethically regarding the development of a sustainable better future for all of humanity (Tribalism or any sub-set Us-Firstism; as presented in the NY Times item I referred to). The systems tempt people to care more about their Private Interest in obtaining personal benefit in their lifetime (even the socialist and communist ones can do that).

The most significant development related to that incorrect development of attitudes and actions is misleading marketing.

Susan Cain's “Quiet: The Power of Introverts in a World That Can't Stop Talking” highlights cultural historian Warren Susman's identification of the shift from a Culture of Character to a Culture of Personality that began in the 1800s. The terms that were impressive for Character were: Citizenship, Duty, Work, Golden deeds, Honour, Reputation, Morals, Manners, Integrity. The terms that were impressive for Personality are: Magnetic,Fascinating,Stunning, Attractive, Glowing, Dominant, Forceful, Energetic.

The advancement of emotion/desire related advertising results in a decline of effectiveness of reason based advertising. Well prepared misleading claims will be more successful than efforts to more fully inform and educate the population in a socioeconomic-political environment where people are encouraged to consider their self-interest to be more important that helping to advance all of humanity to a sustainable better future.

That combination of:

encouraging people to desire to compete to appear to be superior relative to others, rather than competing to substantively be more helpful than others
with more freedom of the winners of competition to behave less ethically

and the ability to get away with efforts against raising awareness and better understanding of the corrections required to develop sustainable advancements for all of humanity

is a serious threat to the future of humanity, and not just regarding climate science.

The development of socioeconomic-political environments/systems like that, with their self-perpetuating promotion/advertising leading to increasing incorrect development and resistance to correction, must be called what it is, not be defended because of created appearances of progress or prosperity that are not truly sustainable.

The solutions/corrections can be understood to require the understanding of the importance of limits on freedoms of belief and actions to get Substantive Ethical Character to be what is admired, to return to the track of Enlightenment that Personality driven socioeconomic-political systems have departed so drastically from.

Singapore's success included some rather authoritarian rule by a rather benevolent dictator restricting freedoms forcefully. I recall how smoking in theatres was ended. The fine imposed was huge, and the smoking stopped immediately. A similar solution was imposed to end the mess of chewing gum on sidewalks, no chewing gum allowed.

Eclectic at 00:32 AM on 26 April 2018

Climate Science Denial Explained: The Denial Personality

Leslie @4 , your report of the communication from the "blatant denialist" is interesting yet not so very uncommon.

Quite apart from his being [to quote his own phrasing] "arrogant and foolish" in his unscientific nonsense . . . he is also being arrogant and foolish enough to believe he himself knows the mind of God. He seems unaware of the irony of his stated position.

We see this overweening self-confidence likewise, in Dr Spencer and Dr Lindzen — though Lindzen's self-confidence derives from his ideas of Yahweh rather than Spencer's more modern Christian God. The fundamentalist concept of a rapidly approaching End of Days, does make it a little strange that someone [such as Leslie's correspondent] would bother to spend time communicating with the [probably] inevitably-damned Leslie. (And it doesn't sound like he is seriously attempting to "convert" Leslie.) Also, why bother disputing with Leslie, when (allegedly) nothing much is going on (other than a few relatively minor hurricanes etc) and nothing much could go on, until the obvious-to-all and utterly calamitous events of the Final Days ?

Maybe the guy is suffering from an anxiety that he might not be right after all? Maybe he is worried that he will be left with egg on his face, when the world continues to go gradually pear-shaped (exactly as the real scientists are indicating) and he will finally have to say: "Why hast Thou forsaken me?"

Yes, an interesting case there, Leslie. Wash your hands of him.

nigelj at 16:57 PM on 25 April 2018

Climate Science Denial Explained: The Denial Personality

Leslie Dean Brown @4, I've also noticed a lot of internet climate denialists are engineers working in transport or fossil fuels etc, for example we had dan the engineering man on this website, and my google search discovered he has an interest in performance cars. Another is Brian Leyland from NZ. As I mentioned polls show denialism is strong in these industries.

But I dont think all denialists are in this engineer category. These engineer guys are smart enough to be articulate denialists, so are more visible on the net. Some may be fronting lobby groups, so professional deniers.

Never undersestimate the power of vested interests in climate denial. However I have always maintained denialism is a mixture of attributes and personalities related to vested interests, politics, and psychology in the main, and the later two aspects closely relate anyway. Politics derives from peoples psychology ultimately.

Someone wondered about scepticism about vaccines. Read the comments anti vaccers make and its mostly women so maternal concerns, and very poorly educated people who just dont understand the issues.You can probably throw in conspiracy theory ideation against big pharma amplifying the scepticism. I think conspiracy theory thinking would be more dominant among poorly educated people.

Doug_C at 15:30 PM on 25 April 2018

Climate Science Denial Explained: The Denial Personality

I've been encountering them online for over a decade and have had many pointless debates over the issue. Deniers are incredibly slippery when it comes to any discussion, always able to find some hole out of any intellectual corner they have placed themselves in.

In the end the conviction I've come up is that many of the deniers I've encountered online have displayed psychopathic tendencies. They lie as second nature, they are willing to take incredible risks with all our lives and they show no remorse at all for their actions. They are often very arrogant and are masters at manipulating people and discussions in their favour and can come across as being charismatic although it usually ends up being a very superficial charm.

5 Traits of Actual Psychopaths

"4. They take big risks.

Psychopaths have little regard for safety, especially other people's. They often lie, cheat, and steal to get ahead. This behavior can be especially toxic. While not all psychopaths engage in illegal activity, those who do plan their crimes well in advance. Their misconduct is usually well-organized, and they leave few clues behind. Psychopaths tend to be very intelligent, which makes them great con artists."

Given at what's at stake and what has already been lost - like 50% of coral reef systems globally already - I've come to look at climate change denial in the interests of the coal, oil and gas sector as the greatest crime ever carried out.

Which make deniers some of the worst criminals ever.

leslie dean brown at 14:51 PM on 25 April 2018

Climate Science Denial Explained: The Denial Personality

Oh I signed up just so I could provide comments here.

I've noticed that pretty much without exception, the denialists I have come across fall into one of several work categories. They are usually either civil or mechanical engineers; work in the mining or fossil fuel industries; in transportation; manufacturing; or else the military. You can see it on LinkedIn. It's very easy to check people's background over there. There is a distinct pattern emerging.

IN OTHER WORDS, the very same industries that produce a shite-load of CO2. Steel, cement and concrete are some of the biggest culprits out there! Not to mention other materials.

Very few denialists have any formal science training. But even they crop up from time to time. I was very disappointed when I came across a fellow materials scientist who was also a blatant denialist. And this is what he had to say:

_________________________________________________________________________

"Hi Leslie, You seem to be very intelligent, but you seem to also be very misinformed (or maybe limitedly informed is more accurate). You need to look beyond the last 20 years of rhetoric and the last 100 years of recorded surface temperatures (which have only become increasingly more accurate and extensive in the last 50 years). Vostok Ice Core Data clearly show that the temperature of the earth is cyclical going back more than 450,000. The earth will go into an Ice Age again with or without the assistance of humans.

My beliefs about the Farce of Global Warming are not based on Scientific Data, they are based upon my belief in the omnipotence of GOD. I am a Christian, but GOD's omnipotence is not just a Christian belief, it is embraced by virtually every non-pagan religion since the beginning of recorded history. The earth is GOD's creation! HE controls ALL of HIS creations! It is arrogant and foolish to believe otherwise.

The "Natural Disasters" that we experience are not "Natural" at all, they are "Super Natural".

I firmly believe that this winter and springs' extremely cold temperatures as well as the rash of recent earthly disasters (hurricanes, tornadoes, fires and earth quakes) are GOD's display of HIS control of HIS creations and HIS disgust and disappointment that most of mankind believes that they somehow control HIS creation.

Whether you believe in GOD (or not), many clearheaded scientists that are not influenced by politics, finance or popular media entertainment believe that Global Warming (as influenced by mankind) is a farce."

_________________________________________________________________________

I mean how does one respond to that? Obviously, this person is not truly scientific, whereupon their logic has flown out the window. They're not open-minded. They're closed-minded. They just admitted "My beliefs about the Farce of Global Warming are not based on Scientific Data, they are based upon my belief in the omnipotence of GOD."

I used to be super logical and think that data alone could inform and pursuade peoples' opinions. Wrong! Completely wrong! That was a big assumption on my part.

I personally think it's time scientists got a bit more emotional in their approach. No one listens to you when you sound like Spock. But when you get passionate about something, people take your more seriously.

The other thing I'd like to add is that if fashion and design have the power to pursuade people to do things on very short timescales, perhaps scientists should be looking to designers for some more clout? As I'm one of the few who speak the dual languages of science and design, I'd like to help scientists with that. Feel free to get in touch with me...

I'd also like to share readers with my blog, where I try to fuse my passion for writing and design with environmentalism among other things (like my mental anguish).

http://www.vidaenigmatica.org/

There was one other thing I wanted to say here. A few months ago I had an argument with a security guard of all people about climate change. He was clearly out of his depth and I let him have it. Anyway, he was in a classic denial the whole time, and then eventually he finally said: “what do you want me to do about it?” (with an attitude)

Is this the real underlying problem? That they literally don't know what else they can do to mitigate climate change?

Maybe that's an idea for a post? WHAT CAN PEOPLE DO ABOUT IT?
For example: plant more trees, buy second hand, reuse, repair, recycle, buy services not products, slow down and enjoy life, etc, etc.

Digby Scorgie at 14:46 PM on 25 April 2018

Climate Science Denial Explained: The Denial Personality

I've always felt that some deniers are suckers — they've been caught for suckers by the propaganda campaign waged by the psychopaths who prefer wealth and power now to a habitable planet later. These deniers are probably open to persuasion.

But the remaining deniers are fanatics, and one is never supposed to debate with fanatics. It's an utterly pointless exercise. I've also seen estimates that put the percentage of such deniers at about 10%.

So I wonder if there's any point in expending energy on the fanatical deniers. My experience of human affairs leads me to think that we would still be arguing about climate action even if there were no deniers at all.

I simply can't bring myself to believe that humanity will take the necessary steps to avert dangerous climate change. The implication, from all the assessments I've seen, is that in about two decades much of the world will be reeling from the effects. That's when humanity will realize that serious action should have been taken — but it'll be too late.

nigelj at 14:30 PM on 25 April 2018

Climate Science Denial Explained: Tactics of Denial

This article from Vox is good on Trumps supporters and whats happening with the Republican Party.

nigelj at 14:21 PM on 25 April 2018

Climate Science Denial Explained: Tactics of Denial

OPOF @27, Singapore is a successful economy, and I'm interested to hear they have good business ethics. They are a very strict rule bound society, maybe a little too authoritarian in leadership for me. I think it's probably a need to unify diverse cultures on a tiny island with limited resources.

Scandinavia is a successful market economy, or mixed model economy that achieves reasonably fair outcomes and has decent business ethics on the whole within a more democratic framework. They are not perfect societies, but are a good socio economic model to emulate, and outcomes tend to be good in those societies.

I read the New York Times article just the other day. It's very compelling, but Trumps blue collar supporters won't get any help from Trumps policies. They have been used as pawns in his self glorifying plans.

One Planet Only Forever at 12:37 PM on 25 April 2018

Climate Science Denial Explained: Tactics of Denial

The link to the NY Times article I referred to in the 4th last para of my comment @26.

One Planet Only Forever at 12:28 PM on 25 April 2018

Climate Science Denial Explained: Tactics of Denial

nigelj@24,

“Economic theory encourages people acting in their "enlightened self interest" on the basis that profitability "will benefit all" in a happy kind of effect and this appears to create wealth over history, at least in the provision of certain types of goods such as consumer goods.”

is not as accurate a presentation as:

“Economic theories of the beneficial developments that will be achieved through things like a free-market and free-society rely on, or require, all participants (or at least the vast majority of the significant participants), to honestly and diligently pursue maximum awareness and understanding of what is really going on and act to sustainably improve things for the future of all humanity. It also requires any member of humanity who has developed Private Interests contrary to that type of sustainable collective improvement to be quickly identified and corrected, something that is more important to apply to those who have become wealthier or more influential.”

As an engineer with an MBA I try to focus on the actual results that are being achieved, which can be very different from the perceptions developed by participants in the system. And I am very aware that addressing harmful undesirable results requires a good understanding of why the results occurred before attempting to correct things.

This is an ethical or moral matter requiring the best explanation for what is observed (abductive reasoning).

For any system to be sustainably successful all actions need to be guided by a good ethical or moral objective.

The vast majority of the developed socioeconomic-political systems can be seen to have failed to encourage ethical and moral development that would sustainably improve the future for all of humanity (developing, encouraging and defending things that prompt ethical people to be concerned about what has developed); failing to discourage unsustainable or harmful activity (even communist systems can be seen to have failed that way).

I have been paying attention that way through many decades based in a region of the planet that 'developed a powerful collective desire to benefit from the global burning of fossil fuels' (Alberta, Canada). And I have tried to be as aware as I can be of what happened around the world regarding the burning of fossil fuels. I have been particularly interested in the people/system responses to the emergent truth of the unacceptable consequences of that activity. Thanks to SkS, I understand that began at the time of Arrhenius in the 1800's. By the 1980's the unacceptability of already fortunate people trying to become even more fortunate as a result of expanded or extended global burning of fossil fuels was undeniable (since then the further strengthening of understanding was delayed by the developed popularity and profitability of that activity and by the deliberate efforts of wealthy powerful people who did not want that understanding to be better understood).

The required system corrections to get ethical/moral system responses to the developed climate science understanding includes admitting the importance of restricting freedoms. Changing the socioeconomic-political systems to effectively correct incorrect beliefs (not allowing people to believe whatever they wish), and restrict freedoms of actions (not allowing people to pursue whatever their developed Personal Interests are regardless of regional popularity or profitability) are essential system corrections (for more issues than climate science).

So my current developed understanding (always a work in progress) is that “an ethical/moral development of a sustainable better future for all of humanity” requires rigorous monitoring and aggressive correction applied to all of the wealthiest and most influential, all of the Biggest Winners. There needs to be higher expectations of Good Behaviour from the richer and more powerful, best achieved by peer pressures. At the other end of the spectrum, the poorest can be excused for understandably unethical behaviour because they have more pressing survival motivations and should not be expected to know better, but should be helped to live better and learn to be ethical.

A system that does not include that correction of the Winners and assistance for the less fortunate will struggle to achieve the desired outcome, no matter what level of understanding is developed among the general population. The clear difference between the leadership actions in places like the USA and the understanding among the general population is proof of the failure of the system to have the Winners actually leading in the proper ethical/moral direction, including failing to meaningfully sustainably assist the less fortunate to better living. And a significantly lower and significantly delayed public acceptance of the developed scientific emergent truth can easily be seen to be the result of the undeserving among the Winners not being effectively 'corrected' in the related socioeconomic political system.

People driven by concerns about 'their perceptions of privilege as fossil fuel burners or being able to profit from that activity' are a significant part of the climate science awareness and understanding challenge. There is a similar finding regarding Trump supporters recently reported in the NY Times. The awareness of the unacceptability of what has developed and the required corrections that are being exposed by climate science mean that a loss of stature relative to others is a serious consideration. And the resistance of people to 'being corrected' is a major factor in the reluctance of the general population to accept the constantly improving awareness and understanding of climate science, a lot of people can sense that they have a lot to lose. They can understand that they deserve to lose, but they did not develop thinking that way.

Sean Carroll's “The Big Picture” apolitically presents the currently developed robust understanding of what is going on. And it reinforces that my current developed understanding is aligned with the collective best explanations of reality. People start with hereditary or genetic characteristics and develop their character based on the environment and experiences they grow up in. People can change their minds, but they can be powerfully motivated by the environment or 'socioeconomic-political system' they are in.

Beliefs about how people should behave (considerately helpful to the future of humanity) in a free-market or free-society are not the reality of what develops if people are freer to believe whatever they want and do as they please. The reality is that people do not develop those ways of thinking and acting in the current developed systems (almost all of them - Singapore and The Cook Islands appear to be rare examples of outliers in that regard). It can be seen that the systems of competition generally encourage the opposite attitudes and actions to develop. They develop zero-sum game attitudes in pursuit of perceptions of being superior to others that actually produce negative-sum results, rather than developing the Positive-sum potential of collaborative healthy competition to most effectively develop sustainable improvements for all of humanity.

Any perceptions of wealth developed those zero-sum (actually negative-sum) ways are usually unethically obtained, and are not actually sustainable.

nigelj at 08:34 AM on 25 April 2018

Climate Science Denial Explained: The Denial Personality

One other thing, regarding social dominance orientation and associated lack of empathy. This sounds like the sociopathic or psychopathic personality that is unusually egocentric, also lacks a strong conscience and integrity, and dislikes rules, restrictions and laws. Cheating is seen as ok with this form of personality.

Some level of sociopathy / psychopathy is recognised as often a feature of chief executives of corporations, who are ruthless and rewarded for this, and probably feel they should be allowed to go on aquiring personal power and wealth regardless of environmental problems or environmental rules. Such people are obviously influential in the climate debates.

1 in 5 CEOs are psychopaths, study finds.

nigelj at 07:24 AM on 25 April 2018

Climate Science Denial Explained: The Denial Personality

A thorough and compelling review of the denialist personality. I see this exact personality all the time all over the place, sadly to say.

Climate denialists do routinely ignore what you say, or change the subject - often going a step further into red herring arguments.

I can only think of one thing you perhaps missed - deliberate ignorance. I see many intelligent people promoting things they must know are absurd, presumably because of political motives and related factors.

Although some intelligent educated people struggle with science, remember its a challenging subject.

Coming back to your observations. We know from polls that conservatives tend to be more sceptical because they don't like the implications of the science and other reasons. But I also recall reading a study of oil company employees which showed about 90% scepticism about the science, not surprisingly. It didn't state reasons but would most likely be fear of losing jobs, and perhaps people following the lead taken by management. Peer pressure is probably a big factor in denialism.

What does it all mean? We have a lot of different reasons for climate scepticism so its shades of grey. Scepticism clearly exists on a spectrum from normal questioning to hardline irrational denialism.

But if people are mainly just afraid of losing jobs, rather than driven by ideology, they can be shown new jobs are being created in renewable energy. Some are probably going to respond to this.

The denialist personality is clearly towards the extreme end of the spectrum, and is best defined as someone very entrenched in their views, and unwilling to learn for a whole range of reasons combining in that person. If I had to bet money on it, I would say political ideology is the dominant reason at this extreme end of the denialist spectrum.

Polls show acceptance of the science has improved in America, although slowly. This shows there are sceptics that can be convinced otherwise. It cannot be random chance, and must reflect better understanding and awareness of the issues.

You will be left with a group of hard core climate denialists maybe 10%, because we see this with many scientific issues, but in a democracy this doesn't matter so much. It does matter a bit with vaccines, because they undermine the way vaccines work.

I agree a lot of this is more about convincing people of the merits of renewable energy, not just in terms of the climate, but in other respects. In fact it's really all about a lifestyle change towards taking more care of the environment and less materialism, and unfortunately this gets back to anti environmentalism and raises political ideology again. But 'sustainability' is ultimately about hard environmental facts, and sensible choices and long term policies, and I personally believe this will eventually cut through politics, because reality and facts eventually win out with 90% of people.

The more people make real lifestyle changes the more visible it becomes and the more politicians will have to take climate change and other environmental issues seriously. A sort of virtuous circle.

Or taking the cynical view, will humanity choose to truly take risks and trash the planet into oblivion?

michael sweet at 22:09 PM on 24 April 2018

Climate's changed before

Tom Curtis,

It is very good to hear from you. I am sorry to hear about your health issues, my daughter has cronic health issues so I know they are a trial. I lived in Acacia Ridge for three years and I smile whenever I hear of Brisbane.

Good luck with everything. I try to include a citation in all my posts but cannot detail things like you did. I wonder how you kept your patience with those who refuse to even read the data they are given.

moderator: I accidently posted a duplicate of this on the wrong OP, sorry.

Tom Dayton at 13:29 PM on 24 April 2018

2018 SkS Weekly Climate Change & Global Warming Digest #16

From the author of The Tao of Willie: an explanation of greenhouse gasses

nigelj at 09:59 AM on 24 April 2018

Pruitt promised polluters EPA will value their profits over American lives

Doug_C @3, yes all true, although taking a devils advocate position, you could argue theres nothing actually wrong with an activist agenda anyway in certain situations. Activism has it's place, especially with something as fundamental to our long term survival as the environment, and given the enormous influence of corporate lobby groups opposing environmental improvements. Activism balances this up nicely.

There's nothing wrong with the EPA actively protecting the environment, and passionate about their cause, and this means things done.The head of the organisation should have some form of environmental qualification, or at least a science degree, so that he understands the issues and relates to staff. Pruit is a lawyer. No wonder morale is so low in the organisation.

People need to keep things in perspective. Labelling something activist is an attempt to discredit something, without actually prviding real evidence of a problem. Its a nasty, small minded slur.

There are plenty of other branches of government to scrutinise EPA decisions, and make sure they don't get carried away and over regulate. Obama managed this, and managed a good balance of environmentalism and economics, proven by the fact the economy and company profitability all did very well on the whole once things recovered from the financial crash. There was therefore just no problem there with the EPA and specific environmental rules that needed fixing, although more should be done about climate change. If anything, the EPA need more regulatory powers, not less.

Eclectic at 09:42 AM on 24 April 2018

2018 SkS Weekly Climate Change & Global Warming Digest #16

Tom, I'm pleased to hear your Mark Twain-like reply. Your posting history is gold-medal impressive. And I dips me lid to you.

Doug_C at 07:38 AM on 24 April 2018

Pruitt promised polluters EPA will value their profits over American lives

nigelj @2

"leading advocate against the EPA's activist agenda"

This seems like more very dishonest branding on the part of some working for polluters and not for public safety.

The EPA was created by Republican President Richard Nixon and had nothing to do with any sort of political activism. It was a response to some very serious pollution issues at the time.

Why the EPA was created

Now it has been agreed on a global scale not just by almost all the researchers involved in valid study of the climate but by almost every government in the world that climate change is a very serious issue that must be addresses as soon as possible to pervent very serious impacts.

The US Supreme Court agreed with this as well in 2007 which means that all this time the EPA should have been strictly regulating carbon dioxide emissions in a way that is consistent with the evidence.

Massachusetts v. Environmental Protection Agency

Not only has the EPA not had an "activist agenda" as Pruitt claims as a justification for damaging it as much as he can in the interests of polluters, for the last decade the EPA has been in violation of US law in regards to not regulating CO2 emissions.

nigelj at 07:20 AM on 24 April 2018

2018 SkS Weekly Climate Change & Global Warming News Roundup #16

Other studies of MWP hockey sticks here.

nigelj at 07:15 AM on 24 April 2018

2018 SkS Weekly Climate Change & Global Warming News Roundup #16

Climate denialists still go on about the alleged " broken hockey stick" despite 1) The fact that Manns study wasn't shown to be incorrect 2) Numerous other studies have found essentially the same hockey stick and 3) Manns study is old now from 1998, and global temperatures are now significantly higher, so an even bigger hockey stick.

But denialists don't get this for god knows what perverted reasoning.

The media doesn't help, because it always highlights controversies without full context, and doesn't do follow up articles on what more recent research shows.

nigelj at 07:04 AM on 24 April 2018

Pruitt promised polluters EPA will value their profits over American lives

Scott Pruitt is the wrong man for the job. One quick read of his qualifications, history, decisons, and the numerous scandals he has been involved in show this.

Doug_C at 06:30 AM on 24 April 2018

Pruitt promised polluters EPA will value their profits over American lives

Citi did a study of the externalized financial costs of business as usual with coal, oil and gas which is the policy of the Trump administration and in part why he brought someone like Pruitt in to kneecap the EPA.

Energy Darwinism II

The estimated externalized costs from a 1.5 C increase in global temperature is $20 Trillion by mid century.

A 2.5 C increase is $44 Trillion.

A 4.5 C increase is $72 Trillion.

Looking at the work of James Hansen who feels that many projections of temperature increase are much too conservative, it's entirely possible that we could be seeing a 4.5 C increase in the timeframe covered by the Citi report.

Even in financial terms fossil fuel business as usual as is being imposed under Trump is unsustainable.

Pruitt's gutting of the EPA won't just be costing more people their lives, it will be hitting millions of people very hard in their investment portfolios.

It's bad business as well as very bad governance.

Trump has a long history of very poor business practices resulting in multiple bankruptcies, claims of fraud with his "University" and repeated lawsuits against him for non-payment to contractors and vendors.

This appears to be a vast expansion of that kind of behavior.

Tom Curtis at 01:59 AM on 24 April 2018

2018 SkS Weekly Climate Change & Global Warming Digest #16

Michael Sweet @1 and Eclectic @2, thankyou for your kind enquiries. I was not dead when last I noticed, although I am having problems with my health. I have responded slightly more fully to Eclectic's other post.

Tom Curtis at 01:57 AM on 24 April 2018

Climate's changed before

Eclectic @601, thankyou for your kind words, and enquiry after my health. I was advised of the enquiry after my health by Michael Sweet by Glenn Tamblyn in an email, and thought it appropriate to respond (with this being the best place). As I have advised several of the SkS crew, my health problems have indeed worsened of late. They are not life threatening, but have made the sustained pace of commentary I had shown in the past unsustainable for me. As I find it difficult not to rebut silly arguments, or respond to requests for instruction, I doubt I could remain active on SkS in any capacity without being drawn into that high rate of activity, and so thought it best to absent myself completely. On my last communication with an SkS team member, I mentioned that my health had improved and that I might be able to return to SkS in the medium turn. Unfortunately it has now taken a turn for the worse, and that now looks less likely, although should my situation stabilize, I would certainly return. In the meantime, I wish you all well, and succes to SkS and its mission.

Doug_C at 16:27 PM on 23 April 2018

Sea Level Rise: Some Reason for Hope?

We also really have to ask what having a largely ice free Arctic ocean in the summer is going to mean for the Greenland ice sheet. Instead of having a very large reflective surface to the north of it, there will likely be a large body of open sea water in the summer at some point almost certainly by mid century.

Instead of 90% of incoming solar radiation being reflected back into space, the upper levels of the Arctic ocean will be absorbing 90% of that radiation experiencing significant heating in summer.

This will likely mean much more evaporation of sea water, the ability of the air column to hold water vapour and far different weather patterns. Which could result in higher amounts of rainfall on the surface of the Greenland ice sheet accelerating melting even further. As well as possibly increasing flow of ice into the ocean.

There are so many dynamics at work here it is going to be difficult to model the responses as once stable systems are thrown into a state of chaos as they transition to a much warmer Arctic and Earth.

Eclectic at 10:05 AM on 23 April 2018

2018 SkS Weekly Climate Change & Global Warming Digest #16

Michael Sweet, for quite some time, I have been wondering the same thing, and have been keeping my fingers crossed.

I though it would be fitting, if I referred to Tom Curtis's many good works — but on another thread (one that would not be eventually buried in obscurity, as is destined for all Global Warming Digests ! ). Surely there could be no more appropriate thread than Climate Myth Number One !

( Michael, I was on the point of referring to Tom Curtis this week, but I was temporarily held back by your interesting contretemps with a certain gentleman of lengthy but disingenuous posting history. )

Eclectic at 09:48 AM on 23 April 2018

Climate's changed before

Salute and thanks to Tom Curtis.

To my knowledge, it has been just over 6 months since the last comment posted by Tom Curtis. And I believe, about the same length of time since he posted at his blog "By Brisbane Waters" [bybrisbanewaters.blogspot.com.au].

Tom Curtis has been a frequent and energetic poster here at SkS, for 6 years or more. He has researched / cited / quoted from a great deal of scientific literature, and he has analysed and discussed a great many issues.

In short, he has been a powerhouse of objective scientific thinking.

He has fought the good fight, against the lies lunacies & disinformation spread by anti-science propagandists & trolls.

But over the years, Tom has occasionally referred to long-term unspecified health problems which hampered him. His recent silence is unprecedented, and presumably indicates that he is too ill to post — or that Father Time has gathered him in.

And I am sure that I speak for all science-oriented participants at SkS, when I express great thanks to Tom.

(The moderators will, I hope, agree that this salute to Tom Curtis belongs here in the comments column of Climate Myth Number One , rather than in some difficult-to-find sub-listing.)

nigelj at 08:04 AM on 23 April 2018

Climate Science Denial Explained: Tactics of Denial

Doug_C @22

Yes it's important to always try to improve things. Individual scientists sometimes make mistakes or have bias etc, however the scientific method by its very nature discourages bias and promotes quality and accuracy because it forces people to look at data, causation, experiment even if the results hurt certain beliefs or gut instincts. Peer review and competition between scientists help expose bad science and bias. Its a good system, but can always be fine tuned to be better.

Another issue with climate denial is the use of dirty tricks, logical fallacies, misleading and deceitful rhetoric and worse. In comparison, climate scientists stress accuracy, scientific argument, nuanced argument, honesty, admission of areass of uncertainty, replicability, data etc. This is all fundamental to the scientific method, so cannot be compromised and they would be flayed alive by the public if caught cheating anyway. It's therefore not a level playing field, because the same standards are not applied to the denial side of the debate.

It's analogous to drug cheating in sports. One side plays dirty. Unfortunately with scientific debates theres no referee to ensure both sides play fair. One hopes the public see this, and make allowances in their thinking, and this is why I support more being done to highlight the trickery in denialists arguments, as John Cook is doing. It won't convince the hard core denialists, but it will convince middle ground open minded people.

nigelj at 07:40 AM on 23 April 2018

Climate Science Denial Explained: Tactics of Denial

OPOF @21

"What is obvious is that the developed socioeconomic-political systems tempt people to be more selfish rather than being altruistic. "

Yes I agree, but its important for people to realise its not because the current economic system is fundamentally wrong in principle, its because of the way people interpret it. Economic theory encourages people acting in their "enlightened self interest" on the basis that profitability "will benefit all" in a happy kind of effect and this appears to create wealth over history, at least in the provision of certain types of goods such as consumer goods. We all know that heavily centralised control and ownership can create stagnant economic systems.

Unfortunately this is not true of the provision of all goods, because some are better provided by the state.

And the profit motive and self interest is interpreted by some people to mean that anything is permissible, when it clearly isn't. The point of self interest is to encourage innovation and decentralised decision making, not to permit harmful behaviours or legitimise greed or reckless decision making.

It is also sometimes interpreted to mean service to others, charity and altruism are worthless, or second rate, when they aren't.

And its interpreted to mean that the community and / or government should have no control over the behaviour of business or individuals or the provision of important public goods. Such things evolved for good reasons, and are not mutually exclusive with making a dollar or enlightened self interest.

nigelj at 07:03 AM on 23 April 2018

Climate Science Denial Explained: Tactics of Denial

Art Vandelay @20, I think you would be right about the sun and the delayed water vapour response.

However you said "OTOH, increasing CO2 will act to reduce outgoing LWR, not incoming SWR, so will act greatest on nighttime minimum temperature, reducing diurnal temperature redange". I'm not sure about this, because heat emitted from the ground is same day and night. I think the explanation is more related to my post @4 where the science article said at night time the layers of the atmosphere compress at night (they didn't say why but presumably it's because more C02 is near ground level at night being heavier and not subject to much convection) and thus more warming at night than at day.

I agree about your cloud cover comments. The reversal in Australia could be temporary or due to local conditions.

However I don't have an atmospheric physics degree, so I'm not 100% sure of this material. I stand to be corrected by someone with better knowledge.

michael sweet at 07:01 AM on 23 April 2018

2018 SkS Weekly Climate Change & Global Warming Digest #16

Does anyone know how Tom Curtis is doing? His extraordinary posts are missed on the board.

Doug_C at 05:34 AM on 23 April 2018

Climate Science Denial Explained: Tactics of Denial

DPiepgrass @17

I think the scientific process does that quite well over time. If something is not verifiable it is eventually discarded.

But there is always room left for improvement within the scientific process or it stops being science at some point and becomes dogma. This is the vulnerability that climate change denial specifically targets and to a degree acts like a virus turning healthy cells into factories for making more viruses. At least in the minds of many in the public, and I've also seen statements by some valid researchers that this continuing wave of denial also affects their perception of the evidence.

Given that denial has been going on at an increasing level for over 4 decades we can see that this has been a very successful approach for the denial campaign which make sense because it was designed from the start by scientists like Fred Seitz who was a past president if the National Academy of Sciences and Fred Singer who also had a productive career in science before moving into the field of fossil fuel lobbyist.

Skepticism must remain at the core of science for it to remain an effective method of progressing our understanding of the natural world. But true skepticism must be clearly defined, hence resources like this one.

So far the overwhelming evidence is that the science behind human forced climate change is the result of true skeptical examination of all the evidence.

Denial is not an examination of any evidence at all, it is a systematic approach to casting doubt on all of that evidence. It starts with an immutable assumption then forces all the data to fit that assumption, no matter how corrupted it must become.

And not only is climate change denial corrupting the data on climate it is also destroying public confidence in science itself. Attacking the evidence on human created climate change is not enough, there has also been an intentional attack on science itself going back decades.

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