Posts tagged ‘carbon’

Don't Believe Anything The EPA Says Unless It is Under Oath

That is the only conclusion I can reach based on this story on the Center for Biological Diversity challenging the EPA over ocean acidification.

In all of the EPA's public relations and political documents, its position is that man-made CO2 is causing ocean acidification  (higher levels of atmospheric CO2 causes more CO2 to get dissolved in ocean water which lowers the PH).  One can find thousands of examples but here is just one, from their web site.  This is a public briefing paper by the EPA on the general topic of ocean acidity.  Here is a screenshot of the top of the first page:

click to enlarge

Lets read that first bullet point in the purple section labelled "key points".  It says

  • Measurements made over the last few decades have demonstrated that ocean carbon dioxide levels have risen in response to increased carbon dioxide in the atmosphere, leading to an increase in acidity (that is, a decrease in pH) (see Figure 1)

This is a typical man-is-screwing-up-the-climate EPA statement made to affect government opinion.  It sounds official.  If I were to publicly challenge it, they would likely label me as anti-science.

The enlightening part of our story occurs when the Center for Biological Diversity took the EPA at their fear-mongering word and said, "well, then you should have an endangerment finding on the Pacific Ocean."

The Lawsuit, launched by the Center for Biological Diversity, seeks to impose enhanced clean water act protection upon the Pacific Coast. The suit argues that protection is necessary because, according to the EPA’s own climate narrative, ocean acidification is severely damaging the marine ecosystem.

According to the CBD;

“The CBD points out that the EPA has acknowledged that ocean acidification has killed billions of oyster larvae in the Pacific Northwest but still would not classify the waters as imperilled.”

http://www.law360.com/articles/568751/epa-seeks-to-sink-green-group-s-ocean-acidification-suit

The EPA had dozens of references to acidification in its endangerment findings, such as this example: (p. 137)

According to the IPCC, climate change (very high confidence) and ocean acidification (see Box 14.1) due to the direct effects of elevated CO2 concentrations (medium confidence) will impair a wide range of planktonic and other marine organisms that use aragonite to make their shells or skeletons (Fischlin et al., 2007).

So now the EPA is in court and supposedly subject to perjury charges.  And wham, their story changes in a flash:

The EPA’s response is that there is insufficient evidence to support an endangerment finding – an apparent contradiction of their own previous climate narrative.

“There were no in situ field studies documenting adverse effects on the health of aquatic life populations in either state,” the EPA’s motion says. “Nor was there any other information documenting effects on indigenous populations of aquatic life in state waters indicating stressors attributable to ocean acidification. The only information available regarding aquatic life in ambient waters under natural conditions was inconclusive.”

The EPA's position is that there is no evidence, but it is a huge problem we should have every confidence exists.  If you don't believe me, look at this passage from an EPA 2010 memorandum on the issue.  Ignore the gobbledygook in the middle, just read it with the parts I have bolded.

This Memorandum recognizes the seriousness of aquatic life impacts associated with OA [ocean acidification] and describes how States can move forward, where OA information exists, to address OA during the 303(d) 2012 listing cycle using the current 303(d) Integrated Reporting (IR) framework. At the same time, this Memorandum also acknowledges and recognizes that in the case of OA, information is largely absent or limited at this point in time to support the listing of waters for OA in many States.

We are really really sure it is a problem although the science is largely absent.

PS- By the way, no one thinks the ocean will turn to acid.  "Acidification" is one of those scare words that work better as PR than science.  The ocean is alkaline and will alkaline even under the most catastrophic forecasts.  The issue is with its becoming less alkaline.

I am Pretty Sure Bastiat Figured This Out 150 Years Ago: Cash For Clunkers Even Worse Than First Thought

From the WSJ

In a National Bureau of Economic Research working paper this month, economists at Texas A&M return to Cash for Clunkers, the 2009 stimulus fillip that dispensed vouchers worth as much as $4,500 if people turned in their old cars for destruction and bought a new set of wheels. Mark Hoekstra, Steven Puller and Jeremy West report their "striking" finding that the $3 billion program's two-month run subtracted between $2.6 billion and $4 billion from the auto industry.

The irony is that the goals were to help Detroit through the recession by subsidizing sales and to please the green lobby by putting more fuel-efficient cars on the road. By pulling forward purchases that consumers would make later anyway, the Obama Administration also hoped to add to GDP. Christina Romer, then chair of the Council of Economic Advisers, called Cash for Clunkers "very nearly the best possible countercyclical fiscal policy in an economy suffering from temporarily low aggregate demand."

The A&M economists had the elegant idea of comparing the buying behavior of Texas drivers who owned cars that barely qualified for cash (those that got 18 miles per gallon of gas or less) and those that barely did not (19 mph). Using state DMV sales records, this counterfactual allowed them to isolate the effects of the Cash for Clunkers incentives and show what would have happened without the program.

The two groups were equally likely to purchase a new vehicle over the nine month period that started with Cash for Clunkers, so the subsidy did not create any extra auto business. But in order to meet the fuel efficiency mandate, consumers who got the subsidy were induced to purchase smaller vehicle models with less horsepower that cost on average $2,500 to $3,000 less than those bought by their ineligible peers. The clunkers bought more Corollas, and everybody else more Chevys.

Extrapolated nationally, auto revenues may have plunged by more than what the government spent. And any environmental benefits cannot be justified under the federal social cost of carbon estimate of $33 a ton. Prior research from 2009 and 2013 has shown that the program cost between $237 and $288 a carbon ton.

Are You Desperately Worried About Global Warming? Then You Should Be Begging for More Fracking

Charles Frank of Brookings has looked at the relative returns of various energy investments in the context of reducing CO2.  The results:  The best answer is natural gas, with nothing else even close.  Solar and Wind can't even justify their expense, at least from the standpoint of reducing CO2.  Here is the key chart (Hat tip Econlog)

powerplants

 

Note that this is not a calculation of the economic returns of these types of power plants, but a relative comparison of how much avoided costs, mainly in CO2 emissions (valued at $50 per ton), there are in switching from coal to one of these fuel sources.  Natural gas plants are the obvious winner.  It remains the winner over solar and wind even if the value of a ton of CO2 is doubled to $100 and both these technologies are assumed to suddenly get much more efficient.   Note by the way that unlike wind and solar (and nuclear), gas substitution for coal plant yields a net economic benefit (from reduced fuel and capital costs) above and beyond the avoided emissions -- which is why gas is naturally substituting right now for coal even in the absence of a carbon tax of some sort to impose a cost to CO2 emissions.**

I was actually surprised that wind did not look even worse.  I think the reason for this is in how the author deals with wind's reliability issues -- he ends up discounting the average capacity factor somewhat.  But this understates the problem.   The real reliability problem with wind is that it can stop blowing almost instantaneously, while it takes hours to spin up other sorts of power plants (gas turbines being the fastest to start up, nuclear being the slowest).  Thus power companies with a lot of wind have to keep fossil fuel plants burning fuel but producing no power, an issue called hot backup.  This issue has proved itself to substantially reduce wind's true displacement potential, as they found in Germany and Denmark.

There is no evidence that industrial wind power is likely to have a significant impact on carbon emissions. The European experience is instructive. Denmark, the world's most wind-intensive nation, with more than 6,000 turbines generating 19% of its electricity, has yet to close a single fossil-fuel plant. It requires 50% more coal-generated electricity to cover wind power's unpredictability, and pollution and carbon dioxide emissions have risen (by 36% in 2006 alone).

Flemming Nissen, the head of development at West Danish generating company ELSAM (one of Denmark's largest energy utilities) tells us that "wind turbines do not reduce carbon dioxide emissions." The German experience is no different. Der Spiegel reports that "Germany's CO2 emissions haven't been reduced by even a single gram," and additional coal- and gas-fired plants have been constructed to ensure reliable delivery.

Indeed, recent academic research shows that wind power may actually increase greenhouse gas emissions in some cases, depending on the carbon-intensity of back-up generation required because of its intermittent character.

 

** Postscript:  The best way to read this table, IMO, is to take the net value of capacity and energy substitution and compare it to the CO2 savings value.

click to enlarge

The first line is just from the first line of the table above.   The second is essentially the net of all the other lines.

I think this makes is clearer what is going on.  For wind, we invest $106,697 for $132,030 $132,030 for $106,697 in emissions reduction (again, I think the actual number is lower).  In Solar, we invest $258,322 for $69,502 in emissions reduction.    For gas, on the other hand, we have no net investment -- we actually have a gain in these other inputs from the switch -- and then we also save $416,534.  In other words, rather than paying, we are getting paid to get $416,534 in emissions reduction.  That is not several times better than Solar and Wind, it is infinitely better.

Postscript #2:  Another way to look at this -- if you put on a carbon tax in the US equal to $50 per ton of CO2 that fuel would produce, then it still likely would make no sense to be building wind or solar plants unless there remained substantial subsidies for them (e.g. investment tax credits, direct subsidies, guaranteed loans, above-market electricity pricing, etc).  What we would see is an absolute natural gas plan craze.

Wherein I Almost Agree With Thomas Friedman on a Climate Issue

Thomas Friedman outlines what he would do first to attack climate change

Well, the first thing we would do is actually slash income taxes and corporate taxes and replace them with a carbon tax so we actually encourage people to stop doing what we don't want, which is emitting carbon, and start doing what we do want, which is hiring more workers and getting corporations to invest more in America.

Friedman is a bit disingenuous here, as he proposes this in a way that implies that deniers (and probably evil Republicans and libertarians) oppose this common sense approach.  Some may, but I would observe that no one on the alarmist side or the Left side of the aisle is actually proposing a carbon tax that 1:1 reduces other taxes.  The only person I know who has proposed this is Republican Jeff Flake, who proposed a carbon tax that would 1:1 reduce payroll taxes.

As I said back then, I am not a big fan of taxes and think that the alarm for global warming is overblown, but I could easily get behind such a plan.  Payroll taxes are consumption taxes on labor.  I can't think of anything much more detrimental to employment and economic health.  So Flake's proposed shift from a consumption tax on labor to a consumption tax on carbon-based energy sources is something I could get behind.  I probably would do the same for Friedman's idea of shifting taxes from income to carbon.  But again, no one is proposing that for real in Congress.  The only plan that came close to a vote was a cap and trade system where the incremental payments would go into essentially a crony slush fund, not reduce other taxes.

Of course, since this is Friedman, he can't get away without saying the government should invest more in infrastructure

 the federal government would borrow money at almost 0 percent and invest it in infrastructure to make our cities not only more resilient, but more efficient.

In TARP and the stimulus and various other clean energy bills, the government borrowed almost a trillion dollars at 0% interest.  How much good infrastructure got done?  About zero.  Most of it just went to feed government bureaucrats and planning studies or ended up as crony payments to well-protected entities (Solyndra, anyone?).  The issues with government infrastructure investments, which Friedman has never addressed despite zillions of articles on infrastructure, are not the borrowing rate but

  • The incentive and information problems the government has in making investments of any sort.
  • The vast environmental, licensing, and NIMBY factors that make it virtually impossible to do infrastructure projects any more, at least in any reasonable time frame.

We Are All Lukewarmers Now

Matt Ridley has another very good editorial in the WSJ that again does a great job of outlining what I think of as the core skeptic position.  Read the whole thing, but a few excerpts:

The United Nations' Intergovernmental Panel on Climate Change will shortly publish the second part of its latest report, on the likely impact of climate change. Government representatives are meeting with scientists in Japan to sex up—sorry, rewrite—a summary of the scientists' accounts of storms, droughts and diseases to come. But the actual report, known as AR5-WGII, is less frightening than its predecessor seven years ago.

The 2007 report was riddled with errors about Himalayan glaciers, the Amazon rain forest, African agriculture, water shortages and other matters, all of which erred in the direction of alarm. This led to a critical appraisal of the report-writing process from a council of national science academies, some of whose recommendations were simply ignored.

Others, however, hit home. According to leaks, this time the full report is much more cautious and vague about worsening cyclones, changes in rainfall, climate-change refugees, and the overall cost of global warming.

It puts the overall cost at less than 2% of GDP for a 2.5 degrees Centigrade (or 4.5 degrees Fahrenheit) temperature increase during this century. This is vastly less than the much heralded prediction of Lord Stern, who said climate change would cost 5%-20% of world GDP in his influential 2006 report for the British government.

It is certainly a strange branch of science where major reports omit a conclusion because that conclusion is not what they wanted to see

The IPCC's September 2013 report abandoned any attempt to estimate the most likely "sensitivity" of the climate to a doubling of atmospheric carbon dioxide. The explanation, buried in a technical summary not published until January, is that "estimates derived from observed climate change tend to best fit the observed surface and ocean warming for [sensitivity] values in the lower part of the likely range." Translation: The data suggest we probably face less warming than the models indicate, but we would rather not say so.

Readers of this site will recognize this statement

None of this contradicts basic physics. Doubling carbon dioxide cannot on its own generate more than about 1.1C (2F) of warming, however long it takes. All the putative warming above that level would come from amplifying factors, chiefly related to water vapor and clouds. The net effect of these factors is the subject of contentious debate.

I have reluctantly accepted the lukewarmer title, though I think it is a bit lame.

In climate science, the real debate has never been between "deniers" and the rest, but between "lukewarmers," who think man-made climate change is real but fairly harmless, and those who think the future is alarming. Scientists like Judith Curry of the Georgia Institute of Technology and Richard Lindzen of MIT have moved steadily toward lukewarm views in recent years.

When I make presentations, I like to start with the following (because it gets everyone's attention):  "Yes, I am a denier.  But to say 'denier', implies that one is denying some specific proposition.  What is that proposition?  It can't be 'global warming' because propositions need verbs, otherwise it is like saying one denies weather.  I don't deny that the world has warmed over the last century.  I don't deny that natural factors play a role in this (though many alarmists seem to).  I don't even deny that man has contributed incrementally to this warming.  What I deny is the catastrophe.  Specifically, I deny that man's CO2 will warm the Earth enough to create a catastrophe.  I define "catastrophe" as an outcome where the costs of immediately reducing CO2 output with the associated loss in economic growth would be substantially less than the cost of future adaption and abatement. "

A Proposal For Better Management of the (Soon to Be) California Climate Slush Fund

California is about to implement a new climate tax via a cap and trade system, where revenues from the tax are supposed to be dedicated to carbon reduction projects.  Forget for a moment all my concerns with climate dangers being overhyped, or the practical problems (read cronyism) inherent in a cap-and-trade system vs. a straight carbon tax.  There is one improvement California can and should make to this system.

Anyone who can remember the history of the tobacco settlement will know that the theory of that settlement was that the funds were needed to pay for additional medical expenses driven by smoking.  Well, about zero of these funds actually went to health care or even to smoking reduction programs  (smoking reduction programs turn out to be fiscally irresponsible for states, since they lead to reduced tax revenues from tobacco taxes).  These funds just became a general slush fund for legislators.   Some states (New York among them, if I remember correctly), spent the entire 20 year windfall in one year to close budget gaps.

If California is serious that these new taxes on energy should go to carbon reduction programs, then these programs need to be scored by a neutral body as to their cost per ton of CO2 reduction.  I may think the program misguided, but given that it exists, it might as well be run in a scientific manner, right?  I would really prefer that there be a legislated hurdle rate, e.g. all programs must have a cost per ton reduction of $45 of less -- or whatever.  But even publishing scores in a transparent way would help.

This would, for example, likely highlight what a terrible investment this would be in reducing CO2.

 

Marginal Economics Fail

How much more carbon does filling a marginal open seat on a bus produce vs. filling a marginal open seat on an airplane.  My guess is the answer rounds to zero even with a lot of decimal places.

Story here.

Wow, Thomas Friedman is A Total Joke

I missed this editorial from back in April, but it is a classic.  If you want one of the greatest illustrations of the phrase "if all you have is a hammer, everything looks like a nail", here is is.

UNTIL we fully understand what turned two brothers who allegedly perpetrated the Boston Marathon bombings into murderers, it is hard to make any policy recommendation other than this: We need to redouble our efforts to make America stronger and healthier so it remains a vibrant counterexample to whatever bigoted ideology may have gripped these young men. With all our warts, we have built a unique society — a country where a black man, whose middle name is Hussein, whose grandfather was a Muslim, can run for president and first defeat a woman in his own party and then four years later a Mormon from the opposition, and no one thinks twice about it. With so many societies around the world being torn apart, especially in the Middle East, it is vital that America survives and flourishes as a beacon of pluralism....

So what to do?  We need a more “radical center” — one much more willing to suggest radically new ideas to raise revenues, not the “split-the-difference-between-the-same-old-options center.” And the best place to start is with a carbon tax.

Want to Save The Ice in the Arctic?

I wrote below about Chinese pollution, but here is one other thought.  Shifting Chinese focus from reducing CO2 with unproven 21st century technology to reducing particulates with 1970s technology would be a great boon for its citizens.  But it could well have one other effect:

It might reverse the warming in the Arctic.

The reduction of Arctic ice sheet size in the summer, and the warming of the Arctic over the last several decades, is generally attributed to greenhouse warming.  But there are reasons to doubt that Co2 is the whole story.   One is that the sea ice extent in Antarctica has actually been growing at the same time the Arctic sea ice cover has been shrinking.  Maybe there is another explanation, one that affects only the northern hemisphere and not the southern?

I don't know if you have snow right now or even ever get snow.  If you do, find some black dust, like coal dust or dark dirt, and sprinkle it on a patch of snow.  Then come back tomorrow.  What will you find?  The patch of snow you sprinkled in dark dust melted a lot in comparison to the rest of the snow.  This is an albedo effect.  Snow takes a while to melt because it reflects rather than absorbs solar radiation.  Putting black dust on it changes that equation, and suddenly solar radiation is adsorbed as heat, and the now melts.  Fast.  I know this because I run a sledding hill in the wintertime, where snow falls on a black cinder hill.  The snow will last until even the smallest patch of black cinders is exposed.  Once exposed, that small hole will grow like a cancer, as it absorbs solar energy and pumps it into the surrounding ground.

By the way, if you have not snow, Accuweather.com did the experiment for you.  See here.  Very nice pictures that make the story really clear.

So consider this mess:

china_pollution_ap971430398958_620x350

Eventually that mess blows away.  Where does it end up?  Well, a lot of it ends up deposited in the Arctic, on top of the sea ice and Greenland ice sheet.

There is a growing hypothesis that this black carbon deposited on the ice from China is causing much of the sea ice to melt faster.  And as the ice sheet melts faster, this lowers the albedo of the arctic, and creates warming.  In this hypothesis, warming follows from ice melting, rather than vice versa.

How do we test this?  Well, the best way would be to go out and actually measure the deposits and calculate the albedo changes from this.  My sense is that this work is starting to be done (example), but it has been slow, because everyone who is interested in Arctic ice of late are strong global warming proponents who have incentives not to find an alternative explanation for melting ice.

But here are two quick mental experiments we can do:

  1. We already mentioned one proof.  Wind patterns cause most pollution to remain within the hemisphere (northern or southern) where it was generated.  So we would expect black carbon ice melting to be limited to the Arctic and not be seen in the Antarctic.  This fits observations
  2. In the winter, as the sea ice is growing, we would expect new ice would be free of particulate deposits and that any new deposits would be quickly covered in snow.  This would mean that we should see ice extents in the winter to be about the same as they were historically, and we would see most of the ice extent reduction in the summer.  Again, this is exactly what we see.

This is by no means a proof -- there are other explanations for the same data.  But I am convinced we would see at least a partial sea ice recovery in the Arctic if China could get their particulate emissions under control.

Update:  Melt ponds in Greenland are black with coal dust

 

Global Warming Folly

I have not written much about climate of late because my interest, err, runs hot and cold.  As most readers know, I am in the lukewarmer camp, meaning that I accept that Co2 is a greenhouse gas but believe that catastrophic warming forecasts are greatly exaggerated (in large part by scientifically unsupportable assumptions of strong net positive feedback in the climate system).  If what I just said is in any way news to you, read this and this for background.

Anyway, one thing I have been saying for about 8 years is that when the history of the environmental movement is written, the global warming obsession will be considered a great folly.  This is because global warming has sucked all the air out of almost anything else in the environmental movement.  For God sakes, the other day the Obama Administration OK'd the wind industry killing more protected birds in a month than the oil industry has killed in its entire history.  Every day the rain forest in the Amazon is cleared away a bit further to make room for ethanol-making crops.

This picture demonstrates a great example of what I mean.   Here is a recent photo from China:

20131211_china1

 

You might reasonably say, well that pollution is from the burning of fossil fuels, and the global warming folks want to reduce fossil fuel use, so aren't they trying to fight this?  And the answer is yes, tangentially.   But here is the problem:  It is an order of magnitude or more cheaper to eliminate polluting byproducts of fossil fuel combustion than it is to eliminate fossil fuel combustion altogether.

What do I mean?  China gets a lot of pressure to reduce its carbon emissions, since it is the largest emitter in the world.  So it might build a wind project, or some solar, or some expensive high speed rail to reduce fossil fuel use.  Let's say any one of these actions reduces smog and sulfur dioxide and particulate pollution (as seen in this photo) by X through reduction in fossil fuel use.  Now, let's take whatever money we spent in, say, a wind project to get X improvement and instead invest it in emissions control technologies that the US has used for decades (coal plant scrubbers, gasoline blending changes, etc) -- invest in making fossil fuel use cleaner, not in eliminating it altogether.  This same money invested in this way would get 10X, maybe even up to 100X improvement in these emissions.

By pressuring China on carbon, we have unwittingly helped enable their pollution problem.  We are trying to get them to do 21st century things that the US can't even figure out how to do economically when in actuality what they really need to be doing is 1970's things that would be relatively easy to do and would have a much bigger impact on their citizen's well-being.

Because Shut Up

Via the Hill

Former vice president Al Gore on Monday called for making climate change "denial" a taboo in society.

“Within the market system we have to put a price on carbon, and within the political system, we have to put a price on denial,” Gore said at the Social Good Summit New York City.

Incredibly, the suggestion of introducing taboos and penalties in a scientific debate is coming from the side that claims to be the great defenders of science.

Great Moments in Predictions -- Al Gore's Ice Forecast

Via Icecap (I still don't think they have permalinks that work)

In his Dec. 10, 2007 “Earth has a fever” speech, Gore referred to a prediction by U.S. climate scientist Wieslaw Maslowski that the Arctic’s summer ice could “completely disappear” by 2013 due to global warming caused by carbon emissions.

Gore said that on Sept. 21, 2007, “scientists reported with unprecedented alarm that the North Polar icecap is, in their words, ‘falling off a cliff.’ One study estimated that it could be completely gone during summer in less than 22 years. Another new study to be presented by U.S. Navy researchers later this week warns that it could happen in as little as seven years, seven years from now.”

Maslowski told members of the American Geophysical Union in 2007 that the Arctic’s summer ice could completely disappear within the decade. “If anything,” he said, “our projection of 2013 for the removal of ice in summer...is already too conservative.”

The former vice president also warned that rising temperatures were “a planetary emergency and a threat to the survival of our civilization.”

However, instead of completely melting away, the polar icecap is at now at its highest level for this time of year since 2006.

Climate Theory vs. Climate Data

This is a pretty amazing statement Justin Gillis in the New York Times.

This month, the world will get a new report from a United Nations panel about the science of climate change. Scientists will soon meet in Stockholm to put the finishing touches on the document, and behind the scenes, two big fights are brewing....

In the second case, we have mainstream science that says if the amount of carbon dioxide in the atmosphere doubles, which is well on its way to happening, the long-term rise in the temperature of the earth will be at least 3.6 degrees Fahrenheit, but more likely above 5 degrees. We have outlier science that says the rise could come in well below 3 degrees.

In this case, the drafters of the report lowered the bottom end in a range of temperatures for how much the earth could warm, treating the outlier science as credible.

The interesting part is that "mainstream science" is based mainly on theory and climate models that over the last 20 years have not made accurate predictions (overestimating warming significantly).  "Outlier science" is in a lot of cases based on actual observations of temperatures along with other variables like infrared radiation returning to space.  The author, through his nomenclature, is essentially disparaging observational data that is petulantly refusing to match up to model predictions.  But of course skeptics are anti-science.

Update on Climate Temperature Sensitivity (Good News, the Numbers are Falling)

I have not had the time to write much about climate of late, but after several years of arguing over emails (an activity with which I quickly grew bored), the field is heating up again, as it were.

As I have said many times, the key missing science in the whole climate debate centers around climate sensitivity, or the expected temperature increase from a doubling of CO2 concentrations in the atmosphere  (as reference, CO2 in the industrial age has increased from about 270 ppm to close to 400 ppm, or about half a doubling).

In my many speeches and this video (soon to be updated, if I can just find the time to finish it), I have argued that climate computer models have exaggerated climate sensitivity.  This Wikipedia page is a pretty good rehash of the alarmist position on climate sensitivity.  According to this standard alarmist position, here is the distribution of studies which represent the potential values for sensitivity - note that virtually none are below 2°C.

Frequency_distribution_of_climate_sensitivity,_based_on_model_simulations_(NASA)

The problem is that these are all made with computer models.  They are not based on observational data.  Yes, all these models nominally backcast history reasonably correctly (look at that chart above and think about that statement for a minute, see if you can spot the problem).  But many an investor has been bankrupted by models that correctly backcast history.  The guys putting together tranches of mortgages for securities all had models.   What has been missing is any validation of these numbers with actual, you know, observations of nature.

Way back 6 or 7 years ago I began taking these numbers and projecting them backwards.  In other words, if climate sensitivity is really, say, at 4°C, then what should that imply about historical temperature increases since the pre-industrial age?  Let's do a back of the envelope with the 4°C example.  We are at just about half of a doubling of CO2 concentrations, but since sensitivity is a logarithmic curve, this implies we should have seen about 57% of the temperature increase that we would expect from a full doubling of CO2.  Applied to the 4°C sensitivity figure, this means that if sensitivity really is 4°C, we should have seen a 2.3°C global temperature increase over the last 150 years or so.  Which we certainly have not -- instead we have seen 0.8°C from all causes, only one of which is CO2.

So these high sensitivity models are over-predicting history.  Even a 2°C sensitivity over-predicts the amount of warming we have seen historically.  So how do they make the numbers fit?  The models are tuned and tweaked with a number of assumptions.  Time delays are one -- the oceans act as a huge flywheel on world temperatures and tend to add large lags to getting to the ultimate sensitivity figure.  But even this was not enough for high sensitivity models to back-cast accurately.  To make their models accurately predict history, their authors have had to ignore every other source of warming (which is why they have been so vociferous in downplaying the sun and ocean cycles, at least until they needed these to explain the lack of warming over the last decade).  Further, they have added man-made cooling factors, particularly from sulfate aerosols, that offset some of the man-made warming with man-made cooling.

Which brings us back to the problem I hinted at with the chart above and its distribution of sensitivities.  Did you spot the problem?  All these models claim to accurately back-cast history, but how can a model with a 2°C sensitivity and an 11°C sensitivity both accurately model the last 100 years?  One way they do it is by using a plug variable, and many models use aerosol cooling as the plug.  Why?   Well, unlike natural cooling factors, it is anthropogenic, so they can still claim catastrophe once we clean up the aerosols.  Also, for years the values of aerosol cooling were really uncertain, so ironically the lack of good science on them allowed scientists to assume a wide range of values.  Below is from a selection of climate models, and shows that the higher the climate sensitivity in the model, the higher the negative forcing (cooling) effect assumed from aerosols.  This has to be, or the models would not back-cast.aerosols2

The reasons that these models had such high sensitivities is that they assumed the climate was dominated by net positive feedback, meaning there were processes in the climate system that would take small amounts of initial warming from CO2 and multiply them many times.  The generally accepted value for sensitivity without these feedbacks is 1.2°C or 1.3°C (via work by Michael Mann over a decade ago).  So all the rest of the warming, in fact the entire catastrophe that is predicted, comes not from CO2 but from this positive feedback that multiplies this modest 1.2°C many times.

I have argued, as have many other skeptics, that this assumption of net positive feedback is not based on good science, and in fact most long-term stable natural systems are dominated by negative feedback (note that you can certainly identify individual processes, like ice albedo, that are certainly a positive feedback, but we are talking about the net effect of all such processes combined).  Based on a skepticism about strong positive feedback, and the magnitude of past warming in relation to CO2 increases, I have always argued that the climate sensitivity is perhaps 1.2°C and maybe less, but that we should not expect more than a degree of warming from CO2 in the next century, hardly catastrophic.

One of the interesting things you might notice from the Wikipedia page is that they do not reference any sensitivity study more recent than 2007 (except for a literature review in 2008).  One reason might be that over the last 5 years there have been a series of studies that have begun to lower the expected value of the sensitivity number.   What many of these studies have in common is that they are based on actual observational data over the last 100 years, rather than computer models  (by the way, for those of you who like to fool with Wikipedia, don't bother on climate pages -- the editors of these pages will reverse any change attempting to bring balance to their articles in a matter of minutes).  These studies include a wide range of natural effects, such as ocean cycles, left out of the earlier models.  And, as real numbers have been put on aerosol concentrations and their effects, much lower values have been assigned to aerosol cooling, thus reducing the amount of warming that could be coming from CO2.

Recent studies based on observational approaches are coming up with much lower numbers.   ECS, or equilibrium climate sensitivity numbers (what we would expect in temperature increases if we waited hundreds or thousands of years for all time delays to be overcome) has been coming in between 1.6°C and 2.0°C.  Values for TCS, or transient climate sensitivity, or what we might expect to see in our lifetimes, has been coming in around 1.3°C per doubling of CO2 concentrations.

Matt Ridley has the layman's explanation

Yesterday saw the publication of a paper in a prestigious journal,Nature Geoscience, from a high-profile international team led by Oxford scientists. The contributors include 14 lead authors of the forthcoming Intergovernmental Panel on Climate Change scientific report; two are lead authors of the crucial chapter 10: professors Myles Allen and Gabriele Hegerl.

So this study is about as authoritative as you can get. It uses the most robust method, of analysing the Earth’s heat budget over the past hundred years or so, to estimate a “transient climate response” — the amount of warming that, with rising emissions, the world is likely to experience by the time carbon dioxide levels have doubled since pre-industrial times.

The most likely estimate is 1.3C. Even if we reach doubled carbon dioxide in just 50 years, we can expect the world to be about two-thirds of a degree warmer than it is now, maybe a bit more if other greenhouse gases increase too….

Judith Currey discusses these new findings

Discussion of Otto, one of the recent studies

Nic Lewis discusses several of these results

This is still tough work, likely with a lot of necessary improvement, because it is really hard to dis-aggregate multiple drivers in such a complex system.  There may, for example, be causative variables we don't even know about so by definition were not included in the study.  However, it is nice to see that folks are out there trying to solve the problem with real observations of Nature, and not via computer auto-eroticism.

Postscript:  Alarmists have certainly not quit the field.  The current emerging hypothesis to defend high sensitivities is to say that the heat is going directly into the deep oceans.  At some level this is sensible -- the vast majority of the heat carrying capacity (80-90%) of the Earth's surface is in the oceans, not in the atmosphere, and so they are the best place to measure warming.  Skeptics have said this for years.  But in the top 700 meters or so of the ocean, as measured by ARGO floats, ocean heating over the last 10 years (since these more advanced measuring devices were launched) has been only about 15% of what we might predict with high sensitivity models.  So when alarmists say today that the heat is going into the oceans, they say the deep oceans -- ie that the heat from global warming is not going into the air or the first 700 meters of ocean but directly into ocean layers beneath that.  Again, this is marginally possible by some funky dynamics, but just like the aerosol defense that has fallen apart of late, this defense of high sensitivity forecasts is completely unproven.  But the science is settled, of course.

The Two Reasons Why People Buy Electric Cars

1.  They want to say something about themselves.  This is the Leonardo DiCaprio buyer, using the electric car to pronounce that he cares about his carbon footprint.  And it looks great parked next to his Gulfstream V.

2.  There is no meter on the electric line you plug into the car.  When you fill your car up with gas, you get to stand there watching the spinning money dial.  There is no parallel experience for plugging in an electric car.  The costs and fossil fuel use of an electric car are not necessarily less than the same size (e.g. subcompact) gasoline-engine car, they are just better hidden.

Owners of electric cars are not smarter about managing the energy costs of their driving, they are substantially more ignorant.  I know exactly how many dollars of gas I have put in my car this month.  How many electric car owners have the first idea how many dollars of electricity they put in theirs?

An Amazing Hypothesis: Supernovas and Earth's Climate

A reader sent this abstract of a Henrik Svensmark study with a one word caption:  Wow!  I agree.  The notion that "local" (and by local, we mean unimaginably far away) supernova affecting the Earth's climate is certainly creative.  Haven't even read the thing so certainly not buying it yet, but it certainly is an amazing hypothesis.

Observations of open star clusters in the solar neighbourhood are used to calculate local supernova (SN) rates for the past 510 Myr. Peaks in the SN rates match passages of the Sun through periods of locally increased cluster formation which could be caused by spiral arms of the Galaxy. A statistical analysis indicates that the Solar system has experienced many large short-term increases in the flux of Galactic cosmic rays (GCR) from nearby SNe. The hypothesis that a high GCR flux should coincide with cold conditions on the Earth is borne out by comparing the general geological record of climate over the past 510 Myr with the fluctuating local SN rates. Surprisingly, a simple combination of tectonics (long-term changes in sea level) and astrophysical activity (SN rates) largely accounts for the observed variations in marine biodiversity over the past 510 Myr. An inverse correspondence between SN rates and carbon dioxide (CO2) levels is discussed in terms of a possible drawdown of CO2 by enhanced bio-productivity in oceans that are better fertilized in cold conditions – a hypothesis that is not contradicted by data on the relative abundance of the heavy isotope of carbon, 13C.

I was initially very skeptical of Svensmark's work attempting to link cosmic rays to cloud formation, with that affect acting as an amplifier (in terms of warming and cooling effects) of changes in solar output.  I must say that over time, that work has survived replication effects pretty well.

Food Miles Silliness and the Virtue of Prices

I have written a number of times on the silliness of food miles and the locavore movement (here and here and here).  For some reason the energy and resource intensity of foods is being judged merely on one component - transportation of the end product - which actually is only a tiny competent of food costs (and thus their resource use).  Is it really more environmentally sensitive for us Phoenicians to grow our corn in the Arizona desert, where soils are unproductive and water must be imported from hundreds of miles away, rather than have it grown in the fertile soils of Iowa and trucked in?

Someone in the media, at least in Australia, finally notices:

TWO brands of olive oil, one from Australia, the other shipped 16,000 kilometres from Italy, sit on a supermarket shelf.

Most eco-friendly shoppers would reach for the Australian oil. But despite burning less fossil fuel to get here, it may not be better for the planet.

Contrary to popular belief, ''food miles'', or the distance food has travelled before we buy it, is a poor indicator of our food's total greenhouse gas emissions, or ''carbon footprint''.

More important is the way our food is farmed and produced, and how far we drive to buy it....

It turns out that stuff like economies of scale really matter

''Local food can often have a higher carbon footprint than food from afar,'' says principal researcher Brad Ridoutt.

He says even home-grown vegetables, with ''zero food miles'', do not necessarily have a smaller carbon footprint than those bought in the supermarket.

''With my veggies, I drive to Bunnings to buy fertiliser, and I go away for the weekend and forget to water them, and in the end I only harvest a few things that I can actually eat.

''By contrast, big producers, who can invest in the latest energy-efficient, water-efficient technology, and make use of all the parts of food, can be much more efficient,'' he says.

Of course, transporting food from producer to retailer still burns fossil fuels that release greenhouse gas emissions, in turn accelerating global warming. But freight emissions are only a fraction of those released during production, meaning even imported food, sustainably produced, can have a smaller carbon footprint than local alternatives.

Even the most rudimentary reading of economics should have given greenies a clue.  In commodity products like most foods, prices tend to be driven down to a point that they reflect resources (and their relative scarcity) that went into the product.  The cheapest foods tend to be those that use the least, and least scarce, resources in production.  So buying locally grown food, which often tends to carry a price premium, should have been a flashing red light that maybe this was not the least-resource-intensive choice.

Frustrating

This seems to represent the general MSM reaction to Peter Gleick's fraud in obtaining Heartland documents:

Peter Gleick violated a principle rule of the global-warming debate: Climate scientists must be better than their opponents....

It’s very tempting for scientists and their allies to employ to tactics of their over-aggressive critics. Yet the global warming camp must make an affirmative case for ambitious action on carbon emissions. Critics need only poke holes in the scientists’ arguments, or, as is so often the case in global warming debates, merely insist they’ve done so. Manipulation and perfidy work much better for the deniers.

Whatever the misdeeds of those who attack climate research, however braindead the opposition to climate scientists appears to be, advocates degrade themselves when they allow their frustrations to get the better of their ethical responsibilities. They lend credence to the (wrong) impression that both sides of the debate are equally worthy of criticism, that global warming is another ideological war that both sides fight deceitfully. In that context, those who want to spend lots of money to green the economy lose, and those who want to do nothing win. As Rick Santorum tours the country accusing climate activists of treachery and conspiracy, this should be only more obvious.

In other words, shame on Gleick for stooping to the level of those corrupt and evil skeptics.  A sentence or two of denunciation of Gleick for an actual crime, accompanied by 500 words of unsubstantiated ad hominem attacks on skeptics.  Nice.  I try to have a "let's play nice" response and this is what comes back in return?  Very frustrating.

Speaking of Government Science...

Thank God for the Left and their scientific approach to government decision making

EU bans claim that water can prevent dehydration...

EU officials concluded that, following a three-year investigation, there was no evidence to prove the previously undisputed fact.

Producers of bottled water are now forbidden by law from making the claim and will face a two-year jail sentence if they defy the edict, which comes into force in the UK next month.

For three years a group of government employees actually got paid to come to the conclusion that drinking water does not prevent dehydration.  Congrats.

If you want an explanation, my guess is that this is part of the Left's war on bottled water.  For some bizarre reason, bottled water has been singled out as one of the evils of modern technology that will drive us into a carbon dioxide-induced climate disaster.  So I don't think the EU would have approved any label claim for water.  Since this is such an absurdly obvious claim that most consumers would just chuckle at (yes, consumers can be trusted to parse product claims), I almost wonder if some water company didn't just float this to make the point that no claim could be approved in the EU system.

Generally Freedom-Loving Australia Turned Totalitarian By Climate Alarmists

This is really sad to see in what is supposed to be a liberal democracy:

Now that the carbon tax has passed through [Australian] federal parliament, the government’s clean-up brigade is getting into the swing by trying to erase any dissent against the jobs-destroying legislation.

On cue comes the Australian Competition and Consumer Commission, which this week issued warnings to businesses that they will face whopping fines of up to $1.1m if they blame the carbon tax for price rises.

It says it has been “directed by the Australian government to undertake a compliance and enforcement role in relation to claims made about the impact of a carbon price.”

...

There will be 23 carbon cops roaming the streets doing snap audits of businesses that “choose to link your price increases to a carbon price”.

Instead, the ACCC suggests you tell customers you’ve raised prices because “the overall cost of running (your) business has increased”.

Update:  Obama loves the Aussie carbon tax

Addressing the press in Australia, where legislators passed a carbon tax earlier this month, Obama praised Prime Minister Julia Gillard for pursuing “a bold strategy” to trim industrial emissions that most scientists say are contributing to global warming.

And the World is 4000 Years Old Too

This is just staggering ignorance from a prominent US Congressman

"I think the answer is no," [MN representative Keith] Ellison said when asked if he believes regulations kill jobs. "And here is why: When we talked about increasing fuel efficiency standards, the industry responded, and they need engineers and designers and manufacturers, and they need actually more people to help respond to the new requirement."

"I believe if the government says, look, we have got to reduce our carbon footprint, you will kick into gear a whole number of people that know how to do that or have ideas about that, and that will be a job engine. I understand what you mean, because if anything adds a cost to a business, you could assume that that will diminish that business’s ability to hire. But I don’t think that’s actually right. I think what businesses want is customers and what — if they are selling product, if they have a product to sell they will do well even if they have some new regulations to meet," the Congressman said.

There is a lot about economics we still do not understand, but one thing we are pretty certain about is that shifting labor and investment from productive to unproductive activities destroys wealth and reduces economic growth.  Of course, since much of the press is at least as ignorant on economic fundamentals, they just nod sagely.

These Are The Folks Who Are Wrapping Themselves in the Mantle of "Science"

Oops.  Accounting error seriously overestimates benefits of biofuels.  

The European Union is overestimating the reductions in greenhouse gas emissions achieved through reliance on biofuels as a result of a “serious accounting error,” according to a draft opinion by an influential committee of 19 scientists and academics.

The European Environment Agency Scientific Committee writes that the role of energy from crops like biofuels in curbing warming gases should be measured by how much additional carbon dioxide such crops absorb beyond what would have been absorbed anyway by existing fields, forests and grasslands.

Instead, the European Union has been “double counting” some of the savings, according to the draft opinion, which was prepared by the committee in May and viewed this week by The International Herald Tribune and The New York Times.

The committee said that the error had crept into European Union regulations because of a “misapplication of the original guidance” under the United Nations Framework Convention on Climate Change.

“The potential consequences of this bioenergy accounting error are immense since it assumes that all burning of biomass does not add carbon to the air,” the committee wrote.

Duh.  This has been a known fact to about everyone else, as most independent studies not done by a corn-state university have found ethanol to have, at best, zero utility in reducing atmospheric CO2.

It is worth noting that the EU would likely have never made this admission had it solely been under the pressure of skeptics, for whom this is just one of a long list of fairly obvious errors in climate-related science.  But several years ago, environmental groups jumped on the skeptic bandwagon opposing ethanol, both for its lack of efficacy in reducing emissions as well as the impact of increasing ethanol product on land use and food prices.

And Then What?

Coke has a billboard covered in some kind of plants that it claims absorbs 46,800 pounds of CO2 a year.  Forgetting for a moment whether we should care about CO2 abatement, I have a question for Coke:  What are you going to do with the plants after you take down the billboard and/or after they die?  Are you going to shrink-wrap them and bury them deep?  Because otherwise, when they die, they are just going to give up the carbon back to the atmosphere as they decompose.  If you really want to abate carbon with plant growth, go build some wood-frame houses.

Update: Incredibly, as the 13th commenter on the linked post, I was the very first who did not think this was an awesome step for the environment.

I'd Walk A Mile for a Camel

This has gotten a fair amount of play around the Internet, but it's crazy enough to re-link in case you have not seen it.  A proposal in Australia to earn carbon credits by shooting wild camels.  Because when living, breathing creatures are dead, the environment is protected.  Take that to its logical conclusion.  All that time those folks were clubbing harp seals, they were saving Mother Nature!

Bolivia Passes Law to Make Poverty Permanent

Via JoNova:

Bolivia is set to pass the world’s first laws granting all nature equal rights to humans. The Law of Mother Earth, now agreed by politicians and grassroots social groups, redefines the country’s rich mineral deposits as “blessings” and is expected to lead to radical new conservation and social measures to reduce pollution and control industry.

The country, which has been pilloried by the US and Britain in the UN climate talks for demanding steep carbon emission cuts, will establish 11 new rights for nature. They include: the right to life and to exist; the right to continue vital cycles and processes free from human alteration; the right to pure water and clean air; the right to balance; the right not to be polluted; and the right to not have cellular structure modified or genetically altered.

Controversially, it will also enshrine the right of nature “to not be affected by mega-infrastructure and development projects that affect the balance of ecosystems and the local inhabitant communities”.

“It makes world history. Earth is the mother of all”, said Vice-President Alvaro García Linera. “It establishes a new relationship between man and nature, the harmony of which must be preserved as a guarantee of its regeneration.”

Hmmm.  There is a big gap between thoughtful conservation and fetishism for the primitive.

Update:  By the way, the article says this is being driven by climate change already experienced in Bolivia.  I suppose it is possible that rainfall has changed, I don't have the numbers for Bolivia, but temperatures in the tropics have shown no trend up or down for decades.   Most of the warming the Earth has seen over the last 50 years (whatever the cause) has been in the Northern Hemisphere and in fact in the upper portions of the Northern Hemisphere.  Here are the temps for the tropics.   The spikes in 1998 and 2010 are El Ninos years.