Posts tagged ‘temperature’

What Climate Change Intevenionists Need to Prove

Advocates for radical government intervention to halt climate change claim that they have "proven" the case for limitations on CO2 emissions beyond the doubt of anyone except contemptible corporate greed-hounds.  As Todd Zwycki quotes Ellen Goodman:

The climate is equally apparent in the struggle over what the Bush
administration calls "climate change" "” and everyone else calls global warming.
The only way to justify doing nothing about global warming now is to
deliberately muddle the science.
It's not an accident that Philip Cooney,
the White House official caught editing reports on greenhouse gases, left for
Exxon Mobil, which has indeed funded doubts.

I have written on the burden of proof that is needed to justify Kyoto-like interventions a number of times, most recently here.  This is what I think has been "proven" sufficiently well.

  1. Proven: Man-made CO2 has increased the concentration of CO2 in the atmosphere (best evidence from ice cores and samplings in Hawaii)
  2. Proven:  Temperatures in the world have risen since 1900. (though perhaps less than typicaly reported due to under-correction for urban heat-island effects).
  3. Proven:  The temperature rise in the first half of the 1900's was not man-made, having occured before substantial man-made CO2 production, and therefore is attributable to some other (disputed and/or unknown) effect.

Here is what is still in doubt, with no consensus:

  1. In Dispute:  How much of the world temperature rise since 1950 was due to man-made CO2 output?   Some unknown phenomena caused a pre-1950 rise, leaving open the question of how much this other phenomena raised temperatures in the latter half of the 1900's and how much was due to man-made CO2.
  2. In Dispute:  How much will the world's temperature rise in the future due to man-made CO2?  Climate is a complex animal, and no honest thinking climate scientist believes they have the right model yet, particularly since none of the most-used models explains history very well.  Also, beyond climate, the economic models that drive CO2 levels in the climate model are hugely flawed, causing the models to way over-estimate man-made CO2 production.
  3. In Dispute:  What are the positives and negatives of global warming for humans?  The negatives are dealt with all too casually, in the sort of unproven scare story day-after-tomorrow unscientific approach that makes good NY Times Sunday Edition reading but does little to introduce any facts.  The positives are never, ever mentioned. "Disinterested" climate scientists never mention that some parts of the world will benefit, in terms of longer growing seasons, or that most of the warming will occur in winter nights in the coldest regions, where warming would be welcome.  Its almost as if they weren't disinterested and had an interest in the answer coming out a certain way.

Wait, we are not done yet.  There is one critical questions that is never even addressed by global warming advocates:

  1. Not Even Addressed:  How do the costs of limiting CO2 emissions, including decreased economic growth and increased poverty, stand up against the dangers?  No one has done a good study of this, though people like Bjorn Lomburg have argued that the cost-benefit is much worse than solving some of the world's other problems.

Basically, the philosophy of environmentalists is that if man changed the world, its worth any cost to reverse it.  Sorry, but this is not sufficient evidence to trash the world economy with new taxes and output restrictions. 

Todd Zwycki, in the article linked above, has a nice analysis:

So the real question to ask here is whether on net, the costs of doing
something about global climate change outweigh the benefits of doing it. This is
the same question we ask (or should ask) about every other intervention into
nature--should we kill the parasites in water so that we can drink it, should we
drain a mosquito-infested swamp to eliminate the risk of malaria, should we
provide a vaccine to kill naturally-occurring smallpox. To imply that if the
science shows we are changing the climate we must do something about it is as
wrongheaded as it would be to say that if we are not contributing to global
warming we should not do anything about it.

On the question of whether global warming would be a net benefit or detriment
to the planet, the evidence I have seen to date suggests that it is
inconclusive. There will be impacts on crop yields, growing locations, forests,
energy consumption, etc., that cut in many different directions. The question of
whether the warming will occur equally throughout the world, or whether it will
occur more strongly in the coldest parts of the world appears to also be
unsettled, and has powerful normative implications for policy. To get bogged
down in the science, and especially in causal questions, seems to me to be
largely beside the point.

Mens Underwear Recomendation

OK, this may be a bit bizarre, but believe me, when you live in a climate that routinely remains between 100-114 degrees for five months, comfortable underwear is a must.  I have tried nearly every type and brand, from briefs to boxers, and have recently discovered some new ones that are great.  They are made by Under Armour, which is an entirely familiar clothing line to everyone here in Phoenix because they handle heat and sweat so well.  My kids live in the Heatgear, though I opt for the Loosegear since I no longer have the body for form fitting clothing. 

The underwear is made of that silky under-armour fabric, but is very comfortable and seems to wick sweat away from your body.  The downside is that they are nearly $20 a pair, but they don't shrink and so far have held up well. 

PS- I know my friend Scott in San Francisco tried a pair as well - he may be able to give us a review in the comments of whether he liked them or not.

Final Note: To those of you who suggest "none", you haven't lived in a really hot climate.  "Freefalling" may be OK on a breezy day on the California coast, but in a Phoenix summer or in my birthplace of Houston, you are going to regret it.

Really Random Tangent: Someone sitting with me in my office this morning commented that "the only reason we think it is hot when it is 98 out is because of our clothes.  If we were naked, 98.6 would be the perfect temperature because that is our body heat."  This is actually a misconception and ignores several principals of thermodynamics.

The key fact is that the body generally is a net producer of heat.  To be comfortable and maintain body heat, the body must shed this heat, which humans do in two ways.  First, we transfer heat to the surrounding air from our skin - to do this well, the surrounding temperature needs to be less than our body heat.  The more differential, the more heat transfer.  Air motion (via wind) provides convective heat transfer, which accelerates this process.  Second, we sweat.  When sweat evaporates, it pulls heat from the surrounding air and adjacent body.  Sweating cools us therefore based on evaporation rates, which is one reason why drier climates are more comfortable -- sweat evaporates faster. 

In addition to shedding the body heat we produce, we also have to shed any heat we pick up by radiative transfer.  Radiative heating is the heat we feel on our skin when we are in direct sunlight, and is why one can be cooler in light than dark clothing (dark colors absorb more radiative heat). 

All this means that if we are naked, in the shade, in a dry climate like Phoenix on a breezy day, we are likely to be comfortable at a temperature closer to 98.6.  In the direct sun in a calm, humid climate, even naked, we are going to want a temperature much much less than 98 to be comfortable.

The Church of Kyoto

After a number of posts on global warming, several of my friends and family have sent me various links and tracts and articles, apparently concerned about me as a Kyoto "unbeliever".  It reminds me a lot of my neighbor giving my wife religious pamphlets when she found out we didn't go to church on Sunday.  Jerry Pournelle has a good series of posts about getting roughly the same reaction

So here is a bit of advice:  First, keep sending me anything thing that has science in it, I always enjoy reading it.  Second, if you are going to send me climate science, make sure you understand where my agnosticism lies:  I don't need more articles saying "see, the world has warmed, therefore we need the Kyoto treaty" or "look at the CO2 rise at Hilo station".  In my mind, there are five logic steps you need to make to justify Kyoto-type emissions limitations.   Everyone sends me proof of the first two steps, but I seldom see science on the last three, which are the most problematic.  Here they are, and where my current thinking is on each:

1.   Is the world warming?  The answer is yes, though ground-based measurements influenced by urban heat islands may be over-estimating the rise, despite corrections.  Also, one needs to remember that some of the warming occurred in the early parts of the century, where man-made CO2 is unlikely to be to blame. 

By the way, be very careful of advocates' graphs - often the time scale is "managed".  Someone sent me this link, of rising temperatures in Central Park.  Unfortunately, the graph is carefully selected, and here is the graph with all the data (same data source) shown.  I have seen the same game played with this chart several times, showing only the data since 1965, which obviously would tell a very different story.  All that being said, I am still convinced the earth is warming some, but what does it tell you when organizations play such exaggeration games with the data - are they being objective scientists or advocates? 

2.  Is the warming due to man-made CO2?  The answer is partially, though perhaps not as much as global-warming activists want to believe.  Yes, man-made CO2 has almost certainly increased CO2 concentrations in the atmosphere, but solar activity has also been at a cyclical peak in this century, and many point to this activity as another contributor to warming.  Also, something other than man-made CO2 drove a half-degree warming early in the century, so whatever caused that warming may well be contributing to warming in the second half of the century (unless you want to take the dangerously untenable position that whatever drove early century warming stopped at the same time that CO2 started having an effect).  Finally, there are still arguments about the quality of the statistical analysis in looking at long term climate trends.

3.  How much will man-made CO2 raise temperatures in the future?  My answer is some, but not nearly as much as models predict.  First, recognize that funding levels for climate research today tend to rise in proportion to how dire the forecast is, so organizations have a financial incentive to over-predict.  Second, when current models are applied to history, they over-predict temperature rise.  This leads me to worry that they may be over-predicting for the future as well.   Yes, they claim to have "corrected" this problem, but in fact they just added fudge factors -- whole fortunes have been lost on Wall Street this way.  Third, and the one thing I can confirm from my own knowledge and analysis, climate models GROSSLY over-estimate man-made CO2 production in the future due to enormously flawed economic models.  I spend a lot more time disecting these mistakes here, but to summarize, the models take the most inefficient nations, assume little efficiency improvements, then grow their economies like crazy:

Because of this economic error, the IPCC scenarios of the future also suggest that relatively poor developing countries such as Algeria, Argentina, Libya, Turkey, and North Korea will all surpass the United States [in terms of GNP]

4.  What is the net cost to the world of global warming?  This is where climate science really begins to break down.  The answer is that, scientifically, we don't know.  We don't even know if it is net bad - warming may be net beneficial.  The "bad things" claims have tended to have a "day after tomorrow" sloppiness to them, but the main bad things cited are rising sea levels and increases in violent weather patterns.  Note that the second is entirely unproven, and, no matter what any media article says, we have not yet seen any increase in violent weather recently -- the data so far does not support it.  As to rising sea levels, there is more science behind the claim but again, we have not yet seen any evidence of it.  Most climate scientists will admit that the majority of the warming will occur on winter nights in the coldest regions (e.g. lots of warming of Siberian winters).  But arctic ice melt in sea level rise scenarios mainly occurs during summer days.  How can this be reconciled?  In fact, NASA data shows little or no warming to date in Antarctica or in the Arctic, despite the fact that models say that it should show the most (and therefore the most melting ice).

Beyond the lack of proof is the fact that most global warming activists don't consider or don't want to admit that there are positive effects.  For example, warming would lengthen growing seasons in most areas, potentially increasing food production.  For example, the Cato Institute reported:

The weather can, of course, be too warm, but that is unlikely to become a major problem if the globe warms. Even though it is far from certain that the temperature will rise, the Intergovernmental Panel on Climate Change (the U.N. body that has been studying this possibility for more than a decade) has forecast that, by the end of the next century, the world's climate will be about 3.6° Fahrenheit warmer than today and that precipitation worldwide will increase by about 7 percent. The scientists who make up this body also predict that most of the warming will occur at night and during the winter. In fact, records show that, over this century, summer highs have actually declined while winter lows have gone up. In addition, temperatures are expected to increase the most towards the poles. Thus Minneapolis should enjoy more warming than Dallas; but even the Twin Cities should find that most of their temperature increase will occur during their coldest season, making their climate more livable.

5.  What is the Cost-Benefit trade-offs of mandated CO2 limitations?  Again, no one knows and if there is any good science on this, I have not seen it.  You can guess that if we have not even figured out if warming is net-bad or net-good, we probably don't have a good handle on cost-benefit trade-offs of treaties like Kyoto.  Even without this trade-off analysis, though, we can come to a few conclusions about Kyoto:

  • Even global warming activists admit that Kyoto will at best reduce temperatures 50 years from now by something like a tenth of a degree.
  • Whatever the benefit of reducing CO2 is, Kyoto takes one of the highest cost approaches (see study here).  The main reason is fairly obvious based on the laws of diminishing returns:  The cheapest place to reduce emissions is in the most inefficient countries, and vice versa.  But Kyoto focuses all its reductions on the most efficient industrialized countries, so it is seeking reductions in the highest possible cost locations.
  • Kyoto is mainly a slam-America treaty.  The way it was constructed, with its 1990 reference date, was cleverly chosen to put most of the burden on the US.  The US has experienced fabulous growth since 1990, while Japan and European nations have experienced slow growth as well as structural changes that make the target artificially easy to reach for them (see more here).   Fast growth developing countries are excluded from the treaty entirely.

So here is my point -- it is possible to believe in the theory of man-made CO2 driving temperature increases and still be skeptical of government action on emissions.  Jerry Pournelle has a good series of posts on the same topic

For other reading, probably the first place to look is the Skeptical Environmentalist by Bjorn Lomborg. Lomborg in this book has probably the best counter-case to the enviro-disaster stories filling the media. He has become an object of absolute hatred among the anti-growth anti globalization fanatics who have latched onto climate change as the key to advancing their anti-technology and anti-capitalist political agenda. The attacks on him have become nearly as edifying about what drives the environmental movement as his book itself. The Economist has a nice article about his book and about the wild-eyed furious reaction of environmental activists to it. The Economist also editorializes here, and you can follow all the criticism and response here on Lomborg's site.

Other sources: This paper is a good roundup of all the issues I have addressed. Cato has a lot of other material here as does the Heartland Institute and at The Commons.

UPDATE:

A great post from Silflay Hraka that is much more eloquent (and concise) than I am is linked here

Junk Science's "10 Most Embarrassing Moments of 2004"

If you have never checked out JunkScience.com, you should.  They do a nice job of providing balance and fact-based analysis for many science "stories" in the media, particularly those where the science is driven by political correctness or a litigation and/or political agenda.  The spend a lot of time on global warming, mainly because there is just so much bad science there to criticize, but they range all over, from the latest food Nazi threats to the latest chemical contamination panic.

Last week, they release their 10 most embarrassing moments of 2004.  One example:

10. University of Arkansas researchers attacked the Atkins Diet in January with a report linking a high-carbohydrate diet with weight loss, saying it was possible to lose weight without cutting calories and without exercising. What they didn't reveal, however, was that the study subjects who lost weight actually ate 400-600 calories per day less than those who didn't lose weight.

Never, ever, ever trust a science story in the press.  The press has no idea how to use or manipulate data (if they had been able to do math, they would not have been journalism majors in the first place).  The press generally publishes science stories by cribbing 95% of the story from activists press releases.  Even when there is data in the story, rather than just bald unsupported declarations, it is either seriously flawed, or more humorously, contradicts the text of the story.

I can't resist supporting this statement with a couple of examples from JunkScience.com.

This is a temperature chart for Central Park, NY.  It gets a lot of play in the press as a "common sense" proof of global warming, and comes right off the NASA climate site:

Cenpark_com

Now, lets ignore the fact that urbanization could be causing a local temperature increase that does not reflect a general climate trend.  Lets, however, select our time frame a little differently.  Lets take the whole data set, which goes back further, rather than this set chosen by activists to make their point.  The same data over a longer trend looks like this:

Cent_park_3_1

OOPS!  Gee, I am not sure Central Park looks much warmer.  In fact, you could argue it is cooler.  Hmmmm.  Ask yourself if you really think it was an accident that the year with the single lowest temperature in the middle of the second graph was used as the starting point for the first.

OK, one other, because I can't resist.  There is some debate (though perhaps not enough) about what temperature data set to use - ground level readings, satellite data, balloons, etc.  It might not stun you to learn that out of 3-5 alternative temperature data sets, global warming activists choose not the middle or the average but the single set (ground temperatures) that show by far the most warming to date.  By coincidence, this data set is perhaps the least reliable, since it never has had anything like 100% area coverage, it is subject to the most human error, and it is influenced by urban warming effects. 

However, if you want to use ground data, certainly the most reliable is data for the United States, where data has been taken over a larger coverage area for more time with more consistent standards than any other location.  Global Warming activists will love to show this chart of US temperatures since about 1978:

Ustemp2

Wow, that looks bad - looks like a nearly one degree Celsius rise in less than 25 years.  This is the "hockey stick" climatologists refer to.  Let's leave aside that this same rise is not visible in satellite data or other measurement approaches.  Like the NYC data, lets take a longer time span.  Can you guess why this chart begins in 1978? 

Ustemp

So we are not even at the high's for the last 100 years - those occured in the 1930's  (you remember - drought, dust bowl, etc?)

OK, that's just a taste - check out their web site for more.  In addition, you can read my post on the Kyoto treaty to find other skeptics of global warming, as well as some specific information about how Kyoto is more an anti-American treaty than an environmental treaty.

UPDATE

Based on some responses I have gotten, its probably best that I point out that the reason for posting the charts above was not to "disprove" global warming.  It was to just make the point that you need to be careful with any science you see in the media.  If you look here or here, you will see where I am on global warming, which basically that manmade warming probably exists but is being overstated for a variety of reasons.  In fact, my whole point here is really that you CAN'T prove or disprove something as complex, chaotic, and poorly understood as climate change with 2 or 3 charts.

Adverse Effects of Lawsuits

For this post, I will leave aside for a moment the unfairness of monetary penalties for ridiculous claims or the incredible erosion of individual responsibility that is being created by jackpot litigation.

In addition to these problems, runaway litigation is causing people and organizations everywhere to take defensive postures to protect themselves from suits, and many of these defensive tactics are generally not in the public's interest.  Here are some examples:

One area that bothers me a lot is the area of safety engineering, whether it be for cars or whatever.  I was a mechanical engineer at an oil refinery for several years.  A big part of my job was assessing if a certain condition was "safe" or "unsafe".  Very often, I was working with shades of gray - safety is never absolute.  In fact, the only real way to make a refinery 100% safe is the same way you make cars 100% safe:  you don't have any. 

The way we dealt with the gray was to have a lot of discussion.  I might observe that I was concerned with a certain situation, and my colleagues and I would discuss it.  With some additional research, we would generally reach a consensus on the best approach.  Because we usually made these trade-offs with an inherent bias to err towards safety, I can't think of a decision we made that led to a problem.  We did have several fires/explosions, and one man was killed in one of these, but each and every one was generally caused by some combination of factors we never anticipated, e.g:

there was a steam leak under the insulation of that pipe, and since the pipe was running at a lower temperature than expected, the water condensed, and it turned out the water had an unexpected contaminant such that when it came in contact with the flange bolts it caused an unusual crack propagation mode, made worse by the fact that the flange bolt material was not the kind specced because the vendor had made a mistake on delivery, and the flange eventually gave way and a fire started.

Yeah, this really happened- I include it to say that the situation is never like on the TV mini-series -- evil corporation skimps on 30 cent part knowing it created an unsafe situation.  Safety engineering means tough trade-offs, and, after a ton of work, problems usually occur in an area no one imagined.

Anyway, this is the type of thing I used to do, and doing it well relied mainly on open, honest dialog about safety problems.  Nowadays, however, my sense is that this open dialog in corporations may soon be over.  Corporations are legitimately worried that some young engineer like myself might have written a memo about a potential hazard, and that this memo will end up being exhibit A in some plaintiffs case that the company "knew about" some hazard and did nothing about it.  Think about all the cases you hear about, even the recent Vioxx case -- the center piece of every plaintiffs argument is often that the company "was warned" and is therefore truly evil, because it knew of the problem and did nothing.  The words "smoking gun memo" are practically attached to these lawsuits, but I have always asked myself - are these smoking guns that point to culpability, or are they in fact pointing to a robust safety engineering process?

So, if we have gotten to the point where having internal people asking questions and challenging the company's product and process safety makes companies more vulnerable to lawsuits rather than less, then companies are going to start clamping down on the open internal dialog about safety.  And then the world really will be a less safe place.

UPDATE

Having written this post, I had a flashback to a training video I was shown early on at Exxon.  The video was anti-trust training, and the only message I remember is "don't write it down".  The message was mainly aimed at sales people, who tend to be gung ho and competitive and say things like "lets go out there and crush the competition this week".  This is all fine and good for Joe's Auto Body, but written on an Exxon letterhead, it becomes the central exhibit of some anti-trust trial.  Thus the don't write it down advice.  Anyway, I will be very sad, but not surprised, if they are now showing this video to the engineers as well.

Libertarianism, the Environment, and Kyoto: Part 2

This is the second part of a two part post. Part 1, with more general background on my libertarian point of view on the environment, is here.

Because hell is freezing over today, and because the Russions just ratified the Kyoto Treaty, apparently putting it over the top for it to get started, I wanted to talk more specifically about the Global Warming and the Kyoto Treaty.

First, recognize that, whatever one's views are of Global Warming, Kyoto is a flawed treating from the United State's perspective. Leaving out the validity of global warming or the cost-benefit issues (which we will discuss below) the Kyoto treaty is a thoroughly anti-American document, crafted by other countries to put the vast vast majority of the cost on the US.

Why? Well, first, and most obviously, the entire developing world, including China, SE Asia, and India, are exempt. These countries account for 80% of the world's population and the great majority of growth in CO2 emissions over the next few decades, and they are not even included. If you doubt this at all, just look at what the economic recovery in China over the past months has done to oil prices. China's growth in hydrocarbon consumption will skyrocket over the coming years.

The second major flaw is that European nations cleverly crafted the treaty so that among developed nations, it disproportionately affects the US. Rather than freezing emissions at current levels or limiting growth rates, it calls for emissions to be rolled back to 6-8% below 1990 levels. Why 1990? Well, a couple of important things have happened since 1990, including:

a. European (and Japanese) economic growth has stagnated since 1990, while the US economy has grown like crazy. By setting the target date back to 1990, rather than just starting from today, the treaty is effectively trying to roll back the economic growth in the US that other major world economies did not enjoy. This difference in economic growth is a real sore spot for continental Europeans.
b. In 1990, Germany was reunified, and Germany inherited a whole country full of polluting inefficient factories from the old Soviet days. Most of the factories have been closed in the last decade, giving Germany an instant one-time leg up in meeting the treaty targets, but only if the date was set back to 1990, rather than starting today.
c. Since 1990, the British have had a similar effect from the closing of a number of old dirty Midlands coal mines and switching fuels from very dirty coal burned inefficiently to more modern gas and oil furnaces.
d. Since 1990, the Russians have an even greater such effect, given low economic growth and the closure of thousands of atrociously inefficient communist-era industries.

A third flaw is that Kyoto refused to accept increases in CO2 absorption as an offset to CO2 emissions. For example, increasing the amount of forest cover in a country can have the same effect as reducing emissions, since the forests lock up atmospheric carbon. The only logical reason for disallowing this in Kyoto is that it is an area where North America has a real advantage. Contrary to what most people might guess given all the doom and gloom environmental talk about sprawl and deforestation, the acres of forested land in the US has been steadily increasing since the 1920s.

It is flabbergasting that US negotiators could allow us to get so thoroughly hosed in these negotiations. Does anyone really want to roll back the economic gains of the nineties, while giving the rest of the world a free pass? Anyway, as a result of these flaws, and again having little to do with the global warming argument itself, the Senate voted 95-0 in 1997 not to sign or ratify the treaty unless these flaws (which still exist in the treaty) were fixed Note that this vote included now-candidate John Kerry and previous enviro-candidate Al Gore.

These gross and obvious flaws in Kyoto could let us off the hook from arguing the main point, which is, does global warming justify some sort of international action like Kyoto. So lets assume that Kyoto was all nice and fair and some reasonable basis was arrived at for letting countries share the pain. Should we be doing something?

To see if a treaty like a modified-to-be-fair-Kyoto makes sense to sign and adhere to, one must evaluate at least five questions:

1. Has the world been warming, and is this due to man's activities and specifically CO2(rather than natural cycles)
2. Do increasing CO2 levels lead to global warming in the future
3. Are man-made actions substantially increasing CO2 levels, and what kind of temperature increase might this translate into
4. How harmful will the projected temperature increases be
5. How much harm will CO2 limitations create and how do these stack up against the harms of global warming.

Continue reading ‘Libertarianism, the Environment, and Kyoto: Part 2’ »