A Train Wreck Avoided

As has been reported, the American Physical Society has requested comments on its Draft Statement on Earths Changing Climate. There was some amusement value in how the draft was presented.

“We have taken great care throughout this process, including focusing on consensus building that has resulted in a solid, science-based statement,” said William Barletta, POPA chair. “We now look forward to hearing from the Society’s membership.”

Those bunnies who have not been following what only a rabett of good will could describe as the rope-a-dope stylings of the APS Panel on Public Affairs, may need to do some reviewing, but the clatter of falling teeth filled the arena as Barletta described the workshop that Steven Koonin put together to educate the drafting panel he had carefully packed.

As part of the process, the Review Subcommittee convened a workshop on Jan. 8, 2014, with six climate experts. “We used this meeting to delve deeply into aspects of the IPCC consensus view of the physical basis of climate science,” said Barletta. “The Review Subcommittee’s goal was to illuminate for itself, for the APS membership, and for the broader public both the certainties and boundaries of the current climate science understanding.”

Anyhow, after wiser heads got in front of the moving train, the following statement emerged

On Climate Change: Earth’s changing climate is a critical issue that poses the risk of significant disruption around the globe. While natural sources of climate variability are significant, multiple lines of evidence indicate that human influences have had an increasingly dominant effect on the climate warming observed since the mid-twentieth century. Although the magnitudes of future effects are uncertain, human influences on the climate are growing. The potential consequences of climate change are great and the policies of the next few decades will determine human influences on the climate for centuries.

On Climate Science: As summarized in the 2013 report of the Intergovernmental Panel on Climate Change (IPCC), there continues to be significant progress in climate science. In particular, the connection between rising concentrations of atmospheric greenhouse gases and the increased warming of the global climate system is more certain than ever. Nevertheless, as recognized by Working Group 1 of the IPCC, scientific challenges remain to our abilities to observe, interpret, and project climate changes. To better inform societal choices, the APS urges sustained research in climate science. 

On Climate Action: The APS reiterates its 2007 call to support actions that will reduce the emissions, and ultimately the concentration, of greenhouse gases, as well as increase the resilience of society to a changing climate. Because physics and its techniques are fundamental elements of climate science, the APS further urges physicists to collaborate with colleagues across disciplines in climate research and to contribute to the public dialogue.

Eli, not being at all shy, although frequently ignored (Cassandra was too, and that had a cost), submitted the following

My criticism of the draft statement is the lack of urgency.  Given that damage to the climate through emission of greenhouse gases accumulates and remains, this is a serious omission and I would strongly recommend inserting the second paragraph of the previous statement at the end of the current draft

The evidence is incontrovertible: Global warming is occurring. If no mitigating actions are taken, significant disruptions in the Earth’s physical and ecological systems, social systems, security and human health are likely to occur. We must reduce emissions of greenhouse gases beginning now.

The evidence that the damage will persist for centuries is inherent in every model of the carbon cycle from the simplest to the most complex, and dealt with by the IPCC WG1 reports.  The reason why urgency is needed at every point is explained by Stephen Gardiner in a Perfect Moral Storm

the presence of the problem of moral corruption reveals another sense in which climate change may be a perfect moral storm. This is that its complexity may turn out to be perfectly convenient for us, the current generation, and indeed for each successor generation as it comes to occupy our position. For one thing, it provides each generation with the cover under which it can seem to be taking the issue seriously – by negotiating weak and largely substanceless global accords, for example, and then heralding them as great achievements – when really it is simply exploiting its temporal position. For another, all of this can occur without the exploitative generation actually having to acknowledge that this is what it is doing. By avoiding overtly selfish behaviour, earlier generations can take advantage of the future without the unpleasantness of admitting it – either to others, or, perhaps more importantly, to itself.

In addition, I have comments on the process.  When APS schedules a policy statement it should ensure that the membership of POPA for that year includes several that have expertise and are respected in that area.  What happened in the case of the Earth's Changing Climate statement was seriously embarrassing to the Society and totally avoidable.

In the case of the Earth's Changing Climate statement, the chair of the drafting subcommittee was a serious mistake as, to be generous, his naivety about the physics of climate mislead both him and the drafting subcommittee.  Those doubting this would do well to read and exchange between Isaac Held and the committee from the experts's interview and a reply to the drafting subcommittee's chair from Andrew Lacis, a leading climate scientist

Second, it was disappointing to see that the panel selected to teach the drafting committee about Climate Change consisted of three mainstream experts and three outliers (Christy, Lindzen and Curry).  There are also those who are existentially frightened by what they see as the threat of climate change .  They were not represented, nor am I saying they should necessarily be in equal number, but I do say that the Panglossian outliers should also have not been involved.  There is a professional consensus in this area and if the drafting committee would need lessons  (which it should not) then extremists can only mislead non-experts

Eli has heard from others with slightly different takes.  It is certain that the draft statement is considerably stronger than the originally proposed one.  That is welcome.  Eli and friends had awaited a train wreck.  If one is recommending how to proceed when the need for dealing with the threats of climate change are acknowledged, the draft statement's emphasis on global warming as risk management can be rigorously defended.

However, as readers of Rabett Run know, the threat of climate change has NOT been acknowledged by a blocking minority and IEHO, a call to urgent action is still needed to get through their opposition.

It is important that the draft statement emphasizes the considerable human role in warming, the likelihood it will get worse in the future, and the serious risks involved. It also emphasizes the importance of reducing emissions.

On the other hand, the bunnies and the bunny clutchers know that there are elements of the APS membership who will fight to weaken the statement, and even a slight retreat from the strength of the statement as currently written would be an unacceptable loss.  

Given that, at a minimum it is important for the membership to get behind the statement and back it. Shoving the Overton Window in the direction of strengthening the draft statement will help offset the voices that will no doubt cry out for eviscerating it and, if loud enough, might even succeed.

Postscript:  As Hank says in the comments below:

I think in hindsight the APS will appear, well, to be physicists doing their usual thing, standing on the tracks and squinting into the light wondering why it's getting brighter faster and faster.