Showing posts with label climate. Show all posts
Showing posts with label climate. Show all posts

Saturday, March 30, 2013

FD: Politicization of Climate Sciences

originally published at Freedom Democrats; 12 Dec 2009
In the wake of Climategate, climate researcher Mike Hulme has articulated the ideal role of science in public discourse. Basically, he declares that scientific debates should be kept separate from ethical debates (leaving aside bias inherent in hypothesis generation and choice of research directions), while still informing our actions. This is a nice ideal, but ignores the fact that people will enter scientific debates with ulterior motives and it can be hard for the layman to distinguish between the sincere scientist and these charlatans.
In contrast to Mike Hulme's call for the separation of science and politics, we have his colleague James Hansen (head of NASA's Goddard) who is quite happy to transform his scientific prestige into a platform for political moralizing. In reviewing Hansen's new book for DailyKos, DarkSyde introduces him in this manner:
To be a top climate scientist today means being up to speed in graduate level physics, advanced mathematics, planetary astronomy, meteorology, paleontology, oceanography, bio and geo-chemistry, dealing with programmers and constantly shifting computer architectures, and now on top of everything else, you have to be a tireless political activist and media celebrity.(emphasis mine)
No, you don't have to be a political activist...at least not in Hulme's model of science and politics. The scientific method strives for consensus, while the political method strives for domination; If Hansen and DarkSyde want to make politicians out of scientists, then they should expect politicized resistance and deal with it as a political dispute.
When Hansen compares carbon emission credits to the Indulgences that sparked the reformation, he just sounds like a moralizing fool (even to someone like me who agrees with his preference for a carbon tax, in this case).
There is no necessary connection between doing research and political advocacy. A scientist does have a responsibility to communicate his findings to the public, and when his findings have urgent implications, there is not time to allow the knowledge to percolate through the formal education system (i.e. inform other researchers, who inform their students at university, who become teachers in the primary and secondary schools). So there is an imperative for some member of the field to directly communicate the field's findings to the general public, which probably means being "a media celebrity". However, this is an issue for all academic disciplines, and it is not a requirement for everyone in the field--certain individuals naturally distinguish themselves within the field as communicators and politicians (often taking jobs such as heading major research institutions), and these individuals are the natural public spokespersons of the field.
But what if the research findings have implications for economic policy? If the spokesperson ignored those implications, they would be neglectful in their communication to the public, but taking a position politicizes the field of study.  Following Hulme's model, I suggest that that the scientist make a point of contacting political activists, informing them of the situation, and allowing them to advocate for policy changes. This may even include sitting down with them for a public Q&A, where the scientist acts as a resource on which they draw as they suggest policy responses. This could be either a live discussion, or a book where the first chapter describes the scientific situation and the subsequent chapters are written by activists/politicians who explore the implications.
I'm not saying that scientists should avoid politics all together, just that they shouldn't use their prestige as a practicing scientist to gain exceptional authority in their political advocacy (at least until they have retired).

FD: Climategate

originally published at Freedom Democrats 11/25/2009

By now, i'm sure everyone is aware that the CRU at University of East Anglia was hacked recently either from the outside, or as inside job, and roughly 160 megabytes of documents and emails were archived and uploaded to a Russian file server(btw, russian server farms are a hackers' choice spot for storing warez and other booty). Since then, the document archive has been widely disseminated over the internet, and after the story hit Drudge, it has become fodder for the blogosphere. Predictably, the reactions have reinforced the tribalistic group polarization over this issue. I reviewed some of email correspondence, and unless someone has a firm grasp of climate science, it's virtually impossible if tell if there is any conspiracy to fudge the data. So, i suppose each side will refer to their own priests to tell them what they want to hear. However, it is fairly apparent from the email correspondence that there are some public choice games being played, which frankly, is hardly surprising; that's to be expected from any scientific research that is primarily being funded by the government and which has political ramifications. The only really troubling aspect of the email correspondence is the apparent conspiracy among a few prominent scientists at the CRU to use their political standing and influence to bully refereed journals not to publish papers contrary to "consensus research." This is a very putrid form of public choice, in that group A, which has significant standing with a government body(IPCC) and receives public funding, uses that power to threaten to boycott any refereed journal that publishes research research contrary to the consensus opinion of Group A, or if Group A uses that power to actively conspire to fix the referees.

In the end, Climategate probably doesn't necessarily say much about the reliability of climate science, but it certainly does reinforce the perception among many of an intolerant orthodoxy that that has built up around AGW. The term usually thrown around is "denier," with the connotation being the equating of "AGW consensus" skepticism with something like young earth creationism. I define such skepticism not to imply that there is no such thing as anthropogenic influence on climate(e.g, just nuke the amazon rain forests and we could witness first hand the possible anthropogenic influences on climate, as an extreme example to make a point), but rather with respect to the notion that climate scientists can model the impact of human collective action(or lack thereof) on future long-term climate changes. Admittedly, I don't know much about climate science per se, but I do know a little about non-linear dynamical systems. I'm sure everyone is familiar with the concept of "butterfly effect" in chaos theory, meaning that small variations in initial conditions of a non-linear dynamical system can result in wildly different evolutions in such dynamical systems over time. This is why you can predict weather only over a short term. Climate modeling, where climate is the long-term average of weather over time, however relies on boundary condition, numerical fluid dynamic modeling of the ocean and atmosphere to predict future climate, wherein current observable boundary conditions can be more or less plugged in to test the reliability of the model in explaining past and current climate. These models may be useful in understanding current climate, but it doesn't mean they will accurately predict future changes in climate by fiddling with the boundary conditions. It's a similar, analogous concept, I suppose, to a best fit curve to graph data points in an experiment, which of course, can involve fiddling and fudging, but how well will that best fit curve fit future data points? And in the real long term, that is paleo-climate, it doesn't matter what the fuck humans do, the earth is going to enter into another ice age.

One thing for sure, there should be plenty of skepticism about the public choice dynamics of any collective action. The two things that primarily aggravate me about the typical political debate is the contention that we have only *T* amount of time to act before it's too late, that we have to immanently act to pass whatever boondoggle before time *T* or else all is lost and irreversible. That's scientific nonsense and fear-mongering. The other thing is the propaganda that a public choice game of subsidized green technology is going to be an economic boom. No it's not. There is another type of "denial" at work here, namely "government failure deniers."

FD: The risk of climate change, and its implications

originally published at Freedom Democrats, 12/19/2007
When dealing with an issue like greenhouse gas-induced climate change, productive discussion needs to stay focused on the practical questions: what is the general nature of the risk, and how can we mitigate the risk. Discussions of climate change often become sidetracked by non-productive investigations into the detailed nature of the risk, which are often initiated by individuals who are afraid that general recognition of risk implies that particular strategies/policies must be adopted. I hope to keep this discussion on track by starting with these two declarations:

 1. We don't know exactly how the climate will respond to our greenhouse gas emissions, and it doesn't really matter.
 2. There are many different strategies available to us.

Before getting into the details, let's consider the nature of risk and uncertainty with respect to climate change. We don't know what our climate will be like in the future. It might be similar to today's, or it might be worse. We often wish to refrain from developing plans/opinions until we have a clear sense of what to expect in the future, but this prudence becomes paralytic in situations where we will never have high confidence in our predictions. Some degree of uncertainty is unavoidable with any prediction, and this is especially true with climate predictions due to the complexity of the system. Just to become an expert on this topic would require about 10 years of full time study, and even the experts don't know what will happen. Obviously, most of us cannot become experts, yet we still need to decide how we will act. So, let us begin:

*Greenhouse gas emissions (GGEs) create a substantial risk of problematic climate change.*

1. Carbon dioxide is a greenhouse gas: it allows visible light to pass , but prevents the passage of infra-red light. The net effect is that energy from the sun can easily reach the surface of the earth, but it is hindered from leaving the earth.

2. Humans are drastically increasing the amount of carbon dioxide in the atmosphere (about 25% since 1900).

By themselves, these facts give us reason to consider how to reduce GGEs. But we still may wonder if these changes in atmospheric carbon dioxide levels can impact atmospheric temperatures. So we look at fact 3:

3. Atmospheric temperature is strongly correlated with carbon dioxide concentrations. This has been seen over the long term (ice cores ) and over the short term (modern monitoring).

3b. We also know that the size of glaciers is inversely correlated with atmospheric carbon dioxide, both over the long term and the short term.

This doesn't prove that carbon dioxide levels cause an increase in atmospheric temperature or glacier-melt, but the data is consistent with that proposal. Warming may have all types of side-effects, while excessive glacier-melt will impact the entire water system of the earth, ranging from glacier-fed rivers to the ocean itself. As a practical matter, we face a substantial risk that carbon dioxide emissions will cause global warming and climate change. If these facts aren't enough to convince you that we face a risk of GGE-induced climate change, here's one last fact:

4. The experts agree that we face a risk of GGE-induced climate change.

The Earth is warming. Glaciers are melting. It's time to admit that there is a risk of GGE-induced climate change, and figure out what we want to do about it:

*We have many options for dealing with the risk of GGE-induced climate change.*

 1. Reduce GGEs. This is the intuitive response, and has recieved the most attention over the past couple of decades, meaning that we have developed plenty of ideas of how to reduce GGEs. These options include personal, institutional, and governmental reforms. They exhibit a wide range of return on investment, as illustrated by abatement curves . These options include development of low-emission infrastructe (buildings, vehicles, cities), low-emission technologies, low-emission lifestyles, and carbon sequestration. These may be promoted by private initiative or governmental policies including subsidies, mandates, spending decisions, taxes, cap-n-trade, etc. The most drastic measures (immediate elimination of fossil fuels) could be as bad as global warming.
 2. Buffer the change on a global level (i.e. Geo-engineering , such as putting sulfur dioxide in the upper atmosphere)
 3. Do nothing/Deal with the symptoms directly: We may decide that other concerns are more pressing, and that the risk of climate change does not justify the expenditures needed to stop it. We may also find that we "can't put the geenie back into the bottle", since we've already changed atmospheric carbon dioxide concentrations. We may also find that it is easier to deal with the symptoms (both technically and politically) than it is to deal with the cause of climate change.

Personally, I favor a mix of options 1 and 3. Reductions in GGEs will reduce the severity of climate change -- both in its magnitude and its suddenness. Total elimination of GGEs in the near-future is possibly not worth the cost, and is probably politically impossible (considering the needs of developing countries). Finally, the climate change models are relevant to the extent that they help us to anticipate future challenges arising from climate change. Keep up the work guys!

/Inspired by discussion with John, and cross-posted to Swords Crossed and Daily Kos . /

FD: The World's Most Elite Libertarian Scientist on Global Warming

originally published at Freedom Democrats, 5/18/2007; author unknown

Sorry for the bombastic title. But I'm not sure any of you have heard of David Deutsch, so "David Deutsch on Global Warming" doesn't have the same bite as say, "Stephen Hawking on Global Warming."

Deutsch is the intellectual father of quantum computation, the viability of such likely validating his Multiverse, Many Worlds Interpretation of Quantum Mechanics--a paradigm to be the most radical since the overthrow of classical physcis with relativity and quantum mechanics at the turn of the 20th century. And he is a libertarian--probably, no doubt, the only one at Oxford.

Deutsche believes in "liberty as an essential human value, the abolition of victimless crimes, favors entrepreneurship and takes the view that if something is worth doing, it is worth doing at a profit."

Deutsche rejects carbon taxes, regulations, centralized control of output, arguing, that, firstly, it is too late for carbon dioxide emissions controls to work, anyways, and secondly, mankind is better off focusing on ways to adapt to a constantly changing environment, rather than spending huge sums on attempting to prevent that change.

Here's the video of his talk

Tuesday, February 28, 2012

Global Warming libertarians

Peter Gleick, a prominent climate researcher and scientific popularizer, was recently disgraced due to his use of a false pretense to acquire internal Heartland Institute documents. This whole story (starting with the publication of the Heartland documents) is reviving the idea that there is something "libertarian" about denying the science of global warming. For instance, if you look at the story that I linked to, you'll see Heartland described as a "libertarian" think thank.

I cringe at that association, but I regretfully cannot argue that Heartland is just a tag-along in the libertarian movement -- their roots go back to the origins of the "think-tank" component of the libertarian movement.

Since I cannot disown them from the libertarian movement, I can only discredit their approach to climate change, and point out how they discredit the libertarian movement by politicizing science.

With that, I suggest the following blog articles, the first being by Kevin Carson at the Center for a Stateless Society, and the rest being my own thoughts as published at the (defunct) Freedom Democrats blog:
Unfortunately, these writings do not address all relevant issues, but should make the point that global warming denial is not a libertarian position. We all need to come to grips with the fact that human activity can change the climate, and this will only become more true in the future as our technologies advance. Libertarianism can handle this reality as well as any other ideology can.

Activism: looking in, looking out (libertarians and climate science)


Originally published at Freedom Democrats in 2009

The main goal of ideological advocacy is expand the influence of a particular ideology among the general public. I define an ideological movement as a group of advocates for an overlapping set of ideologies, who recognize their shared interests. These advocates will frequently look to each other for intellectual and material resources, which aid them in their primary task of expanding the influence of their ideologies. While most of their attention will focus on contrasting their own ideology against others that influence the general public, some of their attention will be focused inwards--evaluating disagreements within the movement.

While there are definitely benefits to some degree of introspection within the movement, I've noticed a tendency for people to go overboard and focus on internal squabbles to the detriment of the original goal of advocacy. There are probably many reasons for such navel-gazing, ranging form a concern with one's own social circle to finding more satisfaction to debating with others who share at least a few common assumptions, but I don't want to get too deep into that speculation. What I want to focus on here is an example of productive introspection, and how a lot of people seemed to miss the point.

Over at the Center for a Stateless Society, Kevin Carson wrote an essay called "Libertarians for Junk Science". I thought it was a very well focused and relevant essay. He starts with the premise that there is a scientifically valid risk of man-made climate change, that will cause major harm in at least a few ways. This has long been the mainstream opinion among scientists, and it has finally become the mainstream opinion among the public. Carson takes a faction of libertarians to task for obsessively denying the science here, accusing them of providing a disservice both to science and libertarianism.

Carson's essay is primarily focused inwards, but it can also provide an outsider with greater respect for libertarianism. Carson asserts that climate-change denialism is driven by the fear that the reality of man-made climate change would invalidate libertarianism, then argues that there is no reason for this fear. This point is of immense importance because if the public believes that climate change invalidates libertarianism, then libertarianism is dead. Even if the greenhouse gas effect turns out to be benign, our ability to modify the climate will only increase in the future and we will eventually have to deal with these sorts of issues. Carson provides an explanation for non-libertarians, and asks libertarians to stop framing the issue in a way that discredits liberty.

Unfortunately, his audience (as represented by the comments) seemed to miss the point. One commenter (Schulman) immediately turns to navel-gazing, debating whether Carson is a real libertarian. Another (Kinsella) ignores Carson's critical introspection, apparently interpreting it as an attack on libertarianism and insisting that statists are much more prone to ideology driven pseudoscience than libertarians are. While this is an interesting issue, it is beyond tangential and it wasn't clear that the commenter recognized it.

A final note on the comment thread, is that it was full of standard denialist rhetoric (I've become familiar with it from the evolution/creation debates). The core of this rhetoric was misrepresentation of scientific opinion. Understandably, it is hard for a layman to get a good grasp of the issues, since they don't have the time that a professional has and they are often getting their information second-hand from reporters and activists who don't have a great understanding themselves. One consequence of this misunderstanding is the "magic bullet" refutation -- acting as though one inconsistency is sufficient to demolish a body of theory that has been built by hundreds if not thousands of research projects (and often, that apparent inconsistency has already been addressed). I also got the impression that some commentators have spent more time reading fringe opinions (both for and against climate change legislation) than they have spent reading the opinions of mainstream scientists or policymakers.  They seem unable to distinguish between the ideas of opposing ideological advocates, such as radical environmentalists, and those of the mainstream scientists and technocrats whose ideas form the solid foundation of public debate.

Wednesday, December 30, 2009

Science denialism

Despite some accusations, global warming theory is not a fad. See the following paper:
Peterson, Thomas & Connolley, William & Fleck, John (September 2008). The Myth of the 1970s Global Cooling Scientific Consensus. American Meteorological Society. http://ams.allenpress.com/archive/1520-0477/89/9/pdf/i1520-0477-89-9-1325.pdf

The hypothesis was proposed over 100 years ago, and has been a focus of serious research since the 1950s or so, and has been the consensus opinion of climate researchers for about 20 years now.
The fact that most of the public kept their heads in the sand* through this process is irrelevant. Science does not progress by going back to square one at the request of every ignoramus who decides that he wants to passively investigate some phenomenon as a part time hobby.

This post was inspired by the discussions at Libertarians for Junk Science, and is related to my post at Freedom Democrats The Politicization of Climate Science.

*with the help of plenty of profiteers driven by ulterior motives