Tag: climate change

If People Are Like Polar Bears, We’ll Be Fine

Global Science Report is a feature from the Center for the Study of Science, where we highlight one or two important new items in the scientific literature or the popular media. For broader and more technical perspectives, consult our monthly “Current Wisdom.”


The United Nations’ Intergovernmental Panel on Climate Change (IPCC) is meeting in Japan this week to finalize the second part of its latest compendium on climate change.

The first part, the Working Group I report, focused on the physical science of climate change.  The main findings of that report, released last fall, have been widely panned for not telling the truth about how the latest science is stacking up in support of modest rather than alarming climate change.

The second part, making the news this week, is from the IPCC’s Working Group II and focuses on the effects of climate change.

In an interesting piece in a blog hosted by the United Kingdom’s The Telegraph, Andrew Lilico reports that if leaked drafts are to be trusted, the new report will mark a “formal moving on of the debate from the past, futile focus upon “mitigation” to a new debate about resilience and adaptation.”

We can only wonder what took them so long to realize this—something that we have been saying from virtually day one of this whole global warming thing.

That is not to say that the new IPCC report won’t proclaim that a whole lot of bad things are going to happen as a result of climate change. It most assuredly will say that. But, as we last reported, much of that concern is overblown hype.

Here is another example:

AAAS’s Guide to Climate Alarmism

Global Science Report is a feature from the Center for the Study of Science, where we highlight one or two important new items in the scientific literature or the popular media. For broader and more technical perspectives, consult our monthly “Current Wisdom.”

Back in the Bush II Administration, the American Association for the Advancement of Science (AAAS) nakedly tried to nudge the political process surrounding the passage of the environmentally-horrific ethanol fuel mandate.  It hung a large banner from the side of its Washington headquarters, picturing a corn stalk morphing into a gas pump, all surrounded by a beautiful, pristine, blue ocean.  They got their way, and we got the bill, along with a net increase in greenhouse gas emissions.

So it’s not surprising that AAAS is on the Washington Insider side of global warming, releasing  a report today that is the perfect 1-2-3 step-by-step how-to guide to climate change alarm.

This is how it is laid out in the counterfactually-titled AAAS report  “What We Know”:

Step 1: State that virtually all scientists agree that humans are changing the climate,

Step 2: Highlight that climate change has the potential to bring low risk but high impact outcomes, and

Step 3: Proclaim that by acting now, we can do something to avert potential catastrophe.

To make this most effective, appeal to authority, or in this case, make the case that you are the authority. From the AAAS:

We’re the largest general scientific society in the world, and therefore we believe we have an obligation to inform the public and policymakers about what science is showing about any issue in modern life, and climate is a particularly pressing one,” said Dr. Alan Leshner, CEO of AAAS. “As the voice of the scientific community, we need to share what we know and bring policymakers to the table to discuss how to deal with the issue.

But despite promising to inform us as to “what the science is showing,” the AAAS report largely sidesteps the best and latest science that points to a much lowered risk of extreme climate change, choosing instead to inflate and then highlight what meager evidence exists for potential catastrophic outcomes—evidence that in many cases has been scientifically challenged (for example here and here).

Some Like It Hot

The Current Wisdom is a series of monthly articles in which Patrick J. Michaels and Paul C. “Chip” Knappenberger, from Cato’s Center for the Study of Science, review interesting items on global warming in the scientific literature that may not have received the media attention that they deserved, or have been misinterpreted in the popular press.


With all the stern talk about global warming and widespread concern over climate change, you would think that we humans would have a propensity for cooler temperatures. Everywhere you look, the misery that rising temperatures (and the associated evils) will supposedly heap upon us seems to dominate reports about the coming climate. But do patterns of population movement really support the idea that we prefer cooler locations?

Increased Mobility

Since 1900, the population of the United States increased from about 76 million people to about 309 million people in 2010. Accompanying that population growth were major advances in technology and industry, including vast improvements in our nation’s system of transportation. As planes, trains, and automobiles replaced the horse and buggy, Americans became more mobile, and where we live was no longer connected primarily with proximity to where we were born. Instead, we became much freer to choose our place of residence based on considerations other than ease of getting there.

Where has our new-found freedom of mobility led us? Figure 1 shows the rate of population change from 1900 to 2010 for each of the contiguous 48 states. Notice the increases in states with warm climates such as Florida, Texas, and California, and also in states with big industry (that is, jobs), such as New York, Michigan, and Ohio for example.



Figure 1. The state-by-state population trend (people/year) from 1900 to 2010 (data from U.S. Census Bureau).

Fuel Efficiency Standards for New Trucks—Can’t We Decide These for Ourselves?

Rather than wait on the market to demand more fuel efficient trucks, President Obama, bypassing Congress, has directed the Environmental Protection Agency to draw up a new round of regulations raising the fuel efficiency standards on heavy-duty trucks. He promises that this will save billions of dollars in fuel costs, lower prices and reduce greenhouse gas emissions—or, as he describes it, a “win-win-win” situation.

Thank you, Mr. President for taking such good care of us.

Apparently, we are too stupid to have realized the manifold benefits of this chain of events ourselves.

Or is it that we realize these actions will have no impact of climate change and will probably result in higher prices for new trucks and everything that they transport?

You can use our “Handy-Dandy Temperature Change Calculator” to see that, using the EPA’s own computer model, if Americans cut all of our carbon dioxide emissions to zero, today, the amount of warming that would be prevented (assuming a warming forecast that is itself probably too high) by 2100 is around two-tenths of a degree—an amount that would be virtually impossible to measure against natural climate variability.  Increasing the fuel efficiency of heavy trucks would have considerably less of an effect than cutting all carbon dioxide emissions and would simply not be discernible in climate data.

And the President’s claim that increasing the fuel efficiency will lower the price of all things neglects the fact that we simply do not know what technology would accomplish this end.

Perhaps he should have said—”if you like your truck, you can keep your truck,” that is, until you have to replace it with something that will cost much more than you would have otherwise purchased and not do what it is supposed to do.

Again, thank you, Mr. President.

Keystone XL Pipeline Given High Marks in State Department’s Final Environmental Impact Statement

Recall this passage from President Obama’s Georgetown speech last summer announcing his Climate Action Plan:

Now, I know there’s been, for example, a lot of controversy surrounding the proposal to build a pipeline, the Keystone pipeline, that would carry oil from Canadian tar sands down to refineries in the Gulf. And the State Department is going through the final stages of evaluating the proposal. That’s how it’s always been done. But I do want to be clear:  Allowing the Keystone pipeline to be built requires a finding that doing so would be in our nation’s interest. And our national interest will be served only if this project does not significantly exacerbate the problem of carbon pollution. The net effects of the pipeline’s impact on our climate will be absolutely critical to determining whether this project is allowed to go forward. It’s relevant.

This basically should have green-lighted the pipeline, because, as I pointed out in congressional testimony last year, regardless of how you figure the carbon dioxide emissions from the pipeline’s oil, the resulting climate impact will be so small as to assuredly put the president’s mind at ease.

The just-released Final Environmental Impact Statement from the State Department concluded about the same thing as the Draft Environmental Impacts Statement from the State Department, which is in complete agreement with my findings regarding carbon dioxide emissions from the pipeline’s oil and climate change. The net global warming impact from the pipeline oil amounts to somewhat less than 1/100th of a degree Celsius over the next 100 years.

So if the president wants to kill the Keystone XL pipeline (clearly he does, because he has had ample opportunity to approve it), he’ll have to find a reason to do so other than a climate one. Unfortunately for him, trying to kill it for other reasons would be equally ill-founded.

Closing the Books on 2013: Another Year, Another Nail in the Coffin of Disastrous Global Warming

Global Science Report is a feature from the Center for the Study of Science, where we highlight one or two important new items in the scientific literature or the popular media. For broader and more technical perspectives, consult our monthly “Current Wisdom.”

A few weeks have now passed since the end of last year, giving enough time for various data-compiling (and “data-adusting”) agencies to get their numbers in order and to release the sad figures from 2013.

U.S. Annual Average Temperature

We pointed out, back in this post in mid-December, that there was an outside chance—if December were cold enough—that the average annual temperature for the U.S. in 2013 would fall below the 20th century average for the first time since 1996.  Well, despite how cold it seemed in December, it turned out to not quite be cold enough to push the January-December 2013 temperature anomaly into negative territory. Figure 1 below shows the U.S. temperature history as compiled by the National Climatic Data Center from 1895 through 2013.

Figure 1. U.S. annual average temperature as compiled by the National Climatic Data Center, 1895-2013 (data: NCDC Climate at a Glance).

Please be advised that this history has been repeatedly “revised” to either make temperatures colder in the earlier years or warmer at the end.  Not one “adjustment” has the opposite effect, a clear contravention of logic and probability.  While the US has gotten slightly warmer in recent decades, compared to the early 20th century, so have the data themselves.  It’s a fact that if you just take all the thousands of fairly evenly-spaced “official” weather stations around the country and average them up since 1895, that you won’t get much of a warming trend at all.   Consequently a major and ongoing federal effort has been to try and cram these numbers into the box imposed by the theory that gives the government the most power—i.e., strong global warming.

What immediately stands out in 2013 is how exceptional the average temperature in 2012 (the warmest year in the record) really was. In fact, the recovery in 2013 from the lofty heights in 2012 was the largest year-over-year temperature decline in the complete 119 year record—an indication that 2012 was an outlier more so than “the new normal.”

Hot Air About Cold Air

Global Science Report is a feature from the Center for the Study of Science, where we highlight one or two important new items in the scientific literature or the popular media. For broader and more technical perspectives, consult our monthly “Current Wisdom.”

Last summer, we predicted that come this winter, any type of severe weather event was going to be linked to pernicious industrial activity (via global warming) through a new mechanism that had become a media darling—the loss of late summer/early fall Arctic sea ice leading to more persistent patterns in the jet stream. These are known as “blocking” patterns, which generally means that the same type of weather (usually somewhat extremish) hangs around longer than usual.

This global-warming-leading-to-more-extreme-winter-weather mechanism has been presented in several recent papers, perhaps the most noteworthy of which was a 2012 publication by Jennifer Francis and Stephen Vavrus, which was the subject of one of our blog posts last summer. We noted then how their idea ran counter to much of the extant literature of the topic as well as a host of other newly published papers investigating historical jet stream patterns.

After running through a list of observations compiled from the scientific literature countering the Francis and Vavrus explanation of things, we nevertheless wondered:

It’ll be interesting to see during this upcoming winter season how often the press—which seems intent on seeking to relate all bad weather events to anthropogenic global warming—turns to the Francis and Vavrus explanation of winter weather events, and whether or not the growing body of new and conflicting science is ever brought up.

We didn’t have to wait long. After a couple of early winter southward Arctic air excursions, the familiar and benign-sounding “jet stream” had become the “polar vortex”[1] which “sucked in” the United States. Of course, the U.S. being sucked into a polar vortex was part and parcel of what was to be expected from global warming.

Since we had predicted this action/reaction, we weren’t terribly surprised.

What did surprise us (although perhaps it shouldn’t have) is that the White House joined in the polar vortex horror show and released a video in which John Holdren, the  President’s Science Advisor—arguably the highest ranking “scientist” in the U.S.—linked the frigid air to global warming:

In the video, Holdren boldly stated:

 …a growing body of evidence suggests that kind of extreme cold being experienced by much of the United States as we speak is a pattern that we can expect to see with increasing frequency as global warming continues…

It seems that Holdren neither keeps up with our writings at Cato nor the scientific literature on the topic.

While perhaps it could be argued that Holdren’s statement is not an outright lie, it is, at its very best, a half-truth and even a stretch at that. For in fact, there is a larger and faster growing body of evidence that directly disputes Holdren’s contention.

In addition to the evidence that we reported on here and here, a couple of brand new papers just hit the scientific journals this month that emphatically reject the hypothesis that global warming is leading to more blocking patterns in the jet stream (and accompanying severe weather outbreaks across the U.S.).

The first paper is a modeling paper by a team of U.K. scientists led by Giacomo Masato from the University of Reading. Masato and his colleagues looked at how the magnitude and frequency of atmospheric blocking events in the Atlantic-Europe region is projected to change in the future according to four climate models which the authors claim match the observed characteristics of blocking events in this region pretty well. What they found was completely contradictory to Holdren’s claim. While the researchers did note a model-projected small future increase in the frequency of blocking patterns over the Atlantic (the ones which impact the weather in the U.S.), they found that the both the strength of the blocking events as well as the associated surface temperature anomalies over the continental U.S. were considerably moderated. In other words, global warming was expected to make “polar vortex” associated cold outbreaks less cold.

The second paper is by a research team led by Colorado State University’s Elizabeth Barnes. In their paper “Exploring recent trends in Northern Hemisphere blocking,” Barnes and colleagues used various meteorological definitions of “blocking” along with various datasets of atmospheric conditions to assess whether or not there have been any trends in the frequency of blocking events that could be tied to changes in global warming and/or the declines in Arctic sea ice.

They found no such associations.

From their conclusions:

[T]he link between recent Arctic warming and increased Northern Hemisphere blocking is currently not supported by observations. While Arctic sea ice experienced unprecedented losses in recent years, blocking frequencies in these years do not appear exceptional, falling well within their historically observed range. The large variability of blocking occurrence, on both inter-annual and decadal time scales, underscores the difficulty in separating any potentially forced response from natural variability.

In other words natural variability dominates the observed record making it impossible to detect any human-caused global warming signal even if one were to exist (which there is no proof of).

So, the most recent science shows 1) no observed relationship between global warming and winter severe weather outbreaks and 2) future “polar vortex”-associated cold outbreaks are projected to mollify—yet the White House prepares a special video proclaiming the opposite with the intent to spread climate alarm.

Full scientific disclosure in matters pertaining to global warming is not a characteristic that we have come to expect with this Administration.


Barnes, E., et al., 2014. Exploring recent trends in Northern Hemisphere blocking. Geophysical Research Letters, doi:10.1002/2013GL058745.

Francis, J. A. and S. J. Vavrus, 2012: Evidence linking Arctic amplification to extreme weather in mid-latitudes. Geophysical Research Letters, 39, doi:10.1029/2012GL051000.

Masato, G., T. Woollings, and B.J. Hoskins, 2014. Structure and impact of atmospheric blocking over the Euro-Atlantic region in present day and future simulations. Geophysical Research Letters, doi:10.1002/2013GL058570.

[1] For what it’s worth, there’s been two polar vortices (north and south) on planet earth ever since it acquired an atmosphere and maintains rotation.