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John's World
Thursday, September 27, 2007
I think "consensus" is the right word...
The slowly dying debate on anthropogenic climate change has had one feature that I find puzzling. Climate change skeptics tend to trot out handfuls of scientists and claim there is no "consensus" in the scientific community. But the proof in scientific circles takes place in scientific literature - not talk shows, or even blogs. And there the statistics are clear. 2) The blog reports of the Schulte piece misrepresent the research question that we originally posed. It was, "How many papers published in referred journals disagree with the statement, "...most of the observed warming of the last 50 years is likely to have been due to the increase in greenhouse gas concentrations"? This statement came from the IPCC (2001) and was reiterated explicitly by the 2001 NAS report, so we wanted to know how many papers diverged from that consensus position. The answer was none. The Schulte claim does not refutes that. [More]If there was credible disagreement across science on the very high probability of anthropogenic climate change there would be career-enhancing studies being published in bunches. I support the right of individuals to hold differing opinions about this phenomenon. But as Sen. Moynihan famously said, "Everyone is entitled to their own opinions, but they are not entitled to their own facts." Labels: environment, global warming Tuesday, June 26, 2007
I've got some good news and, uh...
It turns out we all may have been worrying about anthropogenic climate change (global warming) unnecessarily. Following recent questions about how big US coal reserves really are, one analyst says we don't have to sweat carbon emissions - we're going to run out of fossil fuels way sooner than we thought. This fits with my intuition: We face such a huge looming problem with fossil fuels exhaustion that we should be thinking about moving away from fossil fuels due to rising costs and lowered production rather than because we might melt the polar ice caps. We need to embrace solar, nuclear, and wind because we just do not have as much fossil fuels left as the climate doomsters think we do.Oookay, there is room for all kinds of ideas, but we have been continually disappointed by the failure of an Energy Judgment Day to dawn. I changed my major in college from petroleum engineering to chemical engineering because a professor assured me we would be out of oil long before now. I think energy markets will advise us clearly about how fast we are running out of fossil fuels. And I don't see any real panic buying there yet. Labels: energy, global warming Friday, June 15, 2007
What happens when people debate in good faith...
To my surprise, I have found a global warming skeptic with a cogent idea how to attack the problem. I like it, and I think ideas such as his could be the outcome once the shouting and fingerpointing becomes boring (and many of us are pretty much there already). His idea - while hard to summarize briefly - is a carbon emissions tax with a rate set by the actual evidence of global warming. The more proof - the higher the tax, in short.
Regardless, I appreciate suggestions for solutions in addition to proof of one position or other. Labels: global warming, policy Monday, May 28, 2007
Big whoop...
Forecasters have read the omens for this year's hurricane season. I am beside myself with excitement. The 2007 Atlantic hurricane season should have above-average activity, with three major hurricanes and a good chance at least one of them will make landfall, a top hurricane researcher said Friday. [More] Methinks no sane forecaster would offer a "below normal" forecast. How many things could go wrong there? Better to err on the side of caution and predict the sky will fall. Someday. Maybe. How good are these predictions? Not bad at all. In general, the predictions fall within a storm or two of the observed totals. Last season, though, the forecasters had a bad year. 2004's six intense hurricanes doubled most predictions. The seasonal total of nine hurricanes was also significantly higher than expected. Forecasters blamed the poor predictions on a "year [that] did not behave like any other year we have studied." [More] Provide me a break. To begin with the most-often quoted hurricane guru also has a prominent role in the global warming debate. And if it's OK to poke fun at Al Gore (too easy for any real humorist), Dr. Gray is also fair game. The problem is not Gray's age -- we all revered Henry Stommel who did some of his finest work in his seventies. The problem is Gray's failure to adapt to a modern era of meteorology, which demands hypotheses soundly grounded in quantitative and consistent physical formulations, not seat-of-the-pants flying. The WSJ also made much of the withdrawal of an invitation for Gray to join a debate on hurricane trends at an Atlanta tropical meteorology conference. We can't speak for the organizers, but we find it easy to believe that their decision was guided more by the invalidity of Gray's scientific reasoning than by any political or personal considerations. [More] So am I deeply concerned about this year's hurricane season? Actually, yes. America has demonstrated that where hurricanes are likely to hit are a low-empathy sector of our economy. Perhaps it is necessary to be harsh to discourage coastal development and shoddy building practice, but if we did not learn anything from Katrina, the victims are wretched indeed. Labels: global warming, weather Sunday, May 27, 2007
Take my carbon. Please...
When last we visited the subject of global climate change, several readers had shared their points of view on the seriousness of the problem and whether it indeed exists. You can read all the posts and comments by clicking on "global warming" in the Labels section below. Suffice it to say at this point I accept the argument that greenhouse gases (GHG) are contributing significantly to climate change. The question now becomes: What if anything can or should we do about it? The answer has been reduced to two primary options: emissions trading and carbon taxes. Policymakers and businesses are now trying to figure out the best way to limit the emissions of greenhouse gases, especially carbon dioxide, which is produced by burning fossil fuels such as coal, oil, and natural gas. Why impose limits? Because accumulating scientific evidence indicates that the increased concentration of greenhouse gases in the atmosphere is causing average temperatures to rise globally. This increase could trigger significant disruption of the world’s climate by the end of this century. Although there remain serious uncertainties about the magnitude of the human role in climate change, there is a growing consensus that emissions need to be reduced. [If you only read one link - read this one] At first glance, most would likely opt for the one that does not include the word "taxes". But another way of looking at carbon taxes is pricing energy with all the externalities included. Rather than a government revenue scheme, carbon emitters (energy users) would no longer be subsidized by future generations who will experience the downstream costs of our energy consumption. How? With a carbon tax that assesses fuels according to how much they pollute. Coal, having the highest carbon content, would be taxed the most, followed by oil and natural gas. The higher prices for the most damaging fuels would encourage people and companies to use them less and more of other types of energy, including nuclear, solar, wind and biofuels. This approach also would affect all sources -- not just cars, which account for only one-fifth of all U.S. carbon dioxide emissions. [More]Such a tax is termed a Pigovian tax after economist Arthur Pigou. One of the strongest proponents of the carbon tax has been economist Greg Mankiw. One powerful reason he cites is the importance of switching to consumption taxes. Economic growth. Public finance experts have long preached that consumption taxes are better than income taxes for long-run economic growth, because income taxes discourage saving and investment. Gas is a component of consumption. An increased reliance on gas taxes over income taxes would make the tax code more favorable to growth. It would also encourage firms to devote more R&D spending to the search for gasoline substitutes. [More] Emissions markets seem to solve the problem without making us actually, well, do anything. And for the most part, the European experiment in emissions trading was handled just that way - the governments simply handed out emissions allowances until they were worthless. Nonetheless, for many farmers sporadic articles describing how we could suddenly get a payment for sequestering carbon by simply doing what we do is tempting compared to paying $5 for diesel. On the whole, going at GHG reduction via trading schemes strikes me as incredibly complicated and inefficient, since vast bureaucracies for measuring, allocating, and administering caps and credits would be required. Of course, this is one reason such plans are popular with legislators and government planners. One big challenge is how we will get corn residues to breakdown and release nitrogen without releasing carbon - another complicating factor for all-corn cropping strategies. Tillage will decompose the residue faster by mixing oxygen into the soil system, but the carbon and nitrogen release from the residue will be rapid, far before the crop needs the nutrients. A legume cover crop could reduce some of this nitrogen penalty by providing some biological diversity. [More] I favor the carbon tax. By making it revenue neutral via lower income taxes and capital gains taxes (which would go a long way to ending 1031 problems and estate hassles), we could shift our taxing structure and discourage fossil fuel consumption. Since the wealthy consume more energy, they would pay most of the taxes, and progressive rebating via lower income taxes would mitigate the burden on low earners while still encouraging consumption changes. But the even bigger reason is this: ethanol/biofuels would likely not be subject to a carbon tax - it is not a fossil fuel, and hence, carbon-neutral. Taxes would have been paid for the coal or natural gas needed to power the plant, but the result would still be a wider spread between ethanol and gasoline than without the tax. This pricing advantage would lower the need for other legislative protections for biofuels. A carbon tax would solidify the future of biofuels more securely than mandates, credits, and tariffs. A gradually increasing carbon tax would make energy expensive, and perhaps finally make lower consumption via changing our lifestyles more imaginable to more Americans. To be sure, our world will change, but perhaps in a better way. Labels: global warming, policy, pollution Sunday, April 08, 2007
A question of belief...
Our age of criticism is based on one teeny logical flaw: Ideas need not be perfect to work. While I have no pretensions of being a man of science, I have come to respect deeply the power of Science - the inclusive search for objective truth. Engineers like me put scientific results to work, and we rely upon scientific method to continue to serve as as it has in the past. Even if our understanding is incomplete. Hence my position on anthropogenic climate change. I have written several times ( here, here, here, here, and here) about the evolution of my position from general skeptic to acceptance of the position favored by the overwhelming majority of climate scientists. In short, I believe in wise crowds. The recent predictions by the IPCC - even after watering down - reinforce my conviction. I would offer four other reasons why I embrace the position that humans are causing a significant portion of the now verifiable global warming.
Science, in the course of history, has been self-correcting and productive. Neither can be said for religion or ideology. I'm going with the scientists on this one. But I support your right to choose otherwise. Labels: environment, global warming, politics Monday, January 29, 2007
How deep the ocean?...
Pertinent comments below on the NYC photo post timed well with the pending release of the IPCC release on global warming on Friday. Two comments:
The commenter on the previous post has a valid point about melting Arctic ice not raising sea levels. But the bulk of the scientific community seems to believe that global warming will cause higher sea levels, and the argument is how high. It may be that Arctic ice melts are predictive of glacial melts - and those are consequential. Greenland's massive ice sheet could begin to melt this century and may disappear completely within the next thousand years if global warming continues at its present rate. According to a new climate change study, the melting of Greenland's ice sheet would raise the oceans by seven meters (23 feet), threatening to submerge cities located at sea level, from London to Los Angeles. [More]Other estimates vary wildly but all predict significant sea level increases. This meshes with my understanding of Ice Age geography when oceans were smaller due to more glaciers, thus uncovering land bridges long since submerged. ![]() I guess what goes down must come up. Labels: global warming Sunday, January 28, 2007
Theoretically, it could happen during Al Gore's second term...
New York after the polar ice caps melt. ![]() Not really - we've got until 2060. Whew! [via Neatorama] Labels: global warming Wednesday, December 27, 2006
Dog and cats living together!...
We seem to be in a competition to find the most hysterical global warming prediction. The latest entry: ![]() [Click on picture to enlarge] London in 2100.Labels: global warming, predictions Sunday, December 03, 2006
Tell me global warming isn't good for business...
![]() (I suppose they could cut the trees before they build the dam, but what do I know?) And just in case the glaciers do melt, and say, Colorado is underwater, we can still harvest those trees. And we'll build those houses where? Labels: fun, global warming Monday, November 20, 2006
What? Me worry?...
It may just be me, but it seems the more evidence we accumulate to substantiate anthropogenic global warming, the less we seem to care. Certainly the recent African summit evinced few signs of panic or even interest, especially by the major players. THE United Nations conference on climate change, which closed on Friday in Nairobi, was distinguished mainly by its ineffectualness. Like many such events it had proclaimed a grand ambition: to design a more effective régime to replace the Kyoto protocol after 2012. But for all the posturing in the plenary sessions, there was no sign of urgency or radicalism in the corridors. [More]It is almost as if winning the academic battle was THE battle. This peculiar point of view mirrors many political squabbles as well. If we can get our opponent to admit he/she is wrong, then we win - despite the fact the problem still remains. So we spend our time parsing with a microscope press conferences and newspaper accounts for flaws and openings, but little actual effort is spent in corrective action. Labels: global warming, politics Thursday, November 16, 2006
I love it already...
Let's see, we're going to fight global warming by hoisting giant guns with balloons into the upper atmosphere where they will fire tons of sulfur to block the sunlight and cool the earth.
Why didn't I think of that? Reactions have been ummm, mixed. But wait - it could get even better. First you'll have acid rain falling as the sulfates mix with water to form sulfuric acid - that will be fun. And of course, every now and then a large artillery piece will sorta plummet to earth. Is this a great planet or what?? Labels: global warming US Farm Report host John Phipps surfs the Web so you don't have to...
About MeJan and I farm 1700 acres near Chrisman, IL. I have also written humor and commentary for Farm Journal and Top Producer for 13 years. Please visit my website (www.johnwphipps.com) to learn about my speaking services for your group's next meeting. ARCHIVES
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