Spin Cycle: EPA Deflates Climate Impacts, Inflates Significance

The Spin Cycle is a reoccurring feature based upon just how much the latest weather or climate story, policy pronouncement, or simply poo-bah blather spins the truth. Statements are given a rating between 1-5 spin cycles, with less cycles meaning less spin. For a more in-depth description, visit the inaugural edition.

Well, well, well. The EPA has finally gone and done it. They have actually calculated the climate change impacts projected to result of one of their climate change regulations—in this case, the proposed rules for the efficiency standards for medium and heavy duty vehicles.

What they found was hardly surprising—the climate impacts from the proposed regulations will be vanishingly small.

The EPA calculates that the amount of global temperature rise averted by the end of the 21st century from the proposed regulations to be… wait, this is too good to paraphrase. From the EPA:

The results of the analysis demonstrate that relative to the reference case, by 2100 projected atmospheric CO2 concentrations are estimated to be reduced by 1.1 to 1.2 part per million by volume (ppmv), global mean temperature is estimated to be reduced by 0.0026 to 0.0065 °C, and sea-level rise is projected to be reduced by approximately 0.023 to 0.057 cm.

Did you catch that? According to the EPA’s own calculations, their regulation mandating the fuel economy of medium and light duty trucks avoids somewhere between twenty-six ten-thousandths and sixty-five ten-housandths of a degree of future global warming. In other words, it is a useless measure when it comes to influencing the future course of global temperature. If the EPA wants to regulate the fuel efficiency of trucks, it needs to justify it for reasons that don’t relate to climate change.

Of course, if you’ve followed anything that we’ve ever had to say on EPA efforts seeking to mitigate future climate change by limiting carbon dioxide emissions, you know that we have been stressing this for years (basically, since EPA started issuing such regulations). Over and over again, and for each newly-proposed action, we show that the resulting temperature savings will be measured in hundredths to thousandths of a degree.  It is nice to finally see that the EPA completely agrees with us (we’ve known they have all along, but they are just very reluctant to admit it).

When describing the impact of these minuscule changes, we use terms like  “trifling,” “impressively tiny,” “meaningless,” “scientifically undetectable,” and “environmentally inconsequential.”

Here’s how the EPA describes them:

“EPA determines that the projected reductions in atmospheric CO2, global mean temperature, sea level rise, and ocean pH are meaningful in the context of this action.”

“Although these effects are small, they occur on a global scale and are long lasting; therefore, they can make an important contribution to reducing the risks associated with climate change.”

Not only do they talk in glowing terms about the climate significance of the regulations (“an important contribution to reducing risks associated with climate change”), but they simply love the economic ones as well.

Through the magic of the social cost of carbon, the EPA transforms 0.003°C of avoided global warming into $100 billion of economic benefit, and raves:

“[We] estimate net economic benefits exceeding $100billion making this a highly beneficial rule.”

We’ve got to hand it to government bureaucrats, they can be extremely imaginative when it comes to justifying their existence.

But sadly, imagination doesn’t trump reality.

So, while we commend the EPA for actually calculating the climate impacts of their regulation (or should we say, making the results of their calculations publically available), for their overly optimistic view of the import of the (virtually non-existent) impacts, we rate the EPA’s level of spin as “Heavy Duty” and award them four Spin Cycles.


Heavy Duty. Government regulations or treaties claiming to save the planet from certain destruction, but which actually accomplish nothing. Can also apply to important UN climate confabs, such as Copenhagen 2009 (or, quite likely, the upcoming 2015 Paris Summit), that are predicted to result in a massive, sweeping, and world-saving new treaty, followed by self-congratulatory back-patting. Four spin cycles.