Global Warming III - What is the solution?

Even if we have the political will to address the global warming threat, what can we do about it?

Carbon emissions increased globally from a rate from about 1.1% per year in the nineties to more than 3% a year in 2001-2004. Broecker and Kunzig comment, "[N]o matter what happens in the West, the world’s energy consumption is going to increase dramatically in this century, not decrease. And most of that energy will probably continue to come from fossil fuels, above all coal. They are cheap, readily available, and incredibly convenient to use - and we have a global infrastructure of power plants and refineries and pipelines and gas stations that is built around using them." (P.189)

The environmental lobby has understandably focused on conservation measures that cut down on the volume of emissions. The list of energy saving ideas is long and growing. Each proposal has its champions- higher gas mileage, electric and hydrogen powered cars, windmills, solar systems, nuclear power, ethanol and so on. All of these proposals appear to be more of a palliative than a solution. For instance, it would require a sixty five foot wind mill for every man woman and child to meet our needs. Nuclear power is promising, but until nuclear fusion or some other safe, reliable system of waste disposal is developed, it will continue to be limited. Solar power is a long way from becoming cost efficient. It now costs about twenty times as much as coal fired energy. And then there is ethanol. The best I can tell, the chief function of ethanol is to help politicians win votes in the Iowa caucus.

A second approach would be to remove carbon emissions before they reach the atmosphere. The power industry is enthusiastic about flue-gas scrubbing that removes carbon from the emissions before they are released into the air. Scrubbing can be effective on new plants under construction but there is no economical way to add scrubbers to existing power plants. Scrubbing is not practical for automobile emissions, which represent 20% of the carbon emissions. Scrubbing may never become a universal solution to carbon dioxide removal. Nevertheless, coal is the cheapest and most plentiful energy source, and technology that can make the product environmentally friendly should be a welcome addition to the arsenal.

Still another approach involves preserving the capacity of nature to remove carbon from the atmosphere. Much is made of the reduction of rain forests in places such as South America. A green world will be cleaner than not, but land sources for absorbing carbon dioxide such a rain forests tend to be overestimated as the means of containing the spewing of carbon into the air. Only about 15% of the carbon dioxide emissions are consumed by natural forces on land, less that half as much as is absorbed in the ocean. That leaves 50% to remain in the atmosphere. I suspect that the best means of retaining nature’s capacity to absorb carbon may be to avoid heating up the earth, because warm waters actually release carbon dioxide into the air. So we are in a Catch 22. The earth warms and the earth consumes less carbon. The carbon retained in the atmosphere heats up the earth in turn releasing more carbon. And so on.

There remains one more option, namely the removal of carbon dioxide from the atmosphere. This alternative was once considered the most ineffective solution because carbon is far less concentrated in the atmosphere than at the source of emissions. Flue gas is reduced from approximately one part in ten to one part in a million when it reaches the atmosphere. As a result, the scientific community long ignored that alternative.

Claus Lackner, a theoretical scientist, came to the conclusion that there is existing technology available that could remove carbon from the atmosphere efficiently and economically. He sold Walter Broecker on the idea, and Broecker became his champion. Through the use of venture capital, Lackner teamed up with Allen Wright to form a company that built an air extraction prototype. The prototype has been completed and Lackner’s company has declared the project a success.

If it works, the air extraction project solves many of the seemingly intractable issues. The new technology takes only a fraction of the space of wind power and does not raise the esthetic and environmental issues that wind power presents. A carbon waste must be disposed, but it can be done without presenting the toxic threat of nuclear waste. Also, because the carbon is found everywhere, the scrubbers can be located conveniently in the parts of the world where disposal is undertaken. Most important, this technology may prove to be affordable.

Broecker believes that the Lackner project holds the best prospect for fixing the climate. I certainly hope that he is right. Under any circumstances, I am convinced the ultimate solution, if there is one, will come out of our capacity to invent new technologies and that the best investment of public and private resources lies in research and development projects such as the Lackner company.
　
References:
Broecker and Kunzig Fixing the Climate (Hill and Wang 2008)
"Scrubbing the Skies," Economist.com (March, 5, 2009)

Global Warming II - Do we have the political will to solve the problem?

In 1798 Thomas Malthus predicted that the world would be reduced to subsistence living as a result of overpopulation. Here we are in the twenty first century. Population has consistently expanded and, by and large, the Malthusian projections have not materialized.


Malthus underestimated the capacity of human beings to adapt to change. He did not anticipate the industrial revolution that has allowed many more people to live on this planet.
We will ultimately adapt to global warming. The question is whether we have the capacity and will to address the threat intelligently and effectively.


There are reasons to be pessimistic. There is considerable uncertainty over when the gradual increase in temperature will reach the tipping point. Governments work best in a crisis mode.



We watched Hitler storm across Europe without making more than minimal preparations for the impending war. It took Pearl Harbor to convince this country to realize that World War II was for real.


There is a strong possibility that our government and others will slack off on the global warming issue in the same manner. A massive effort to reduce carbon emissions would carry an enormous price tag, and it is hard to believe that we will place global warming the top of our priorities soon.


Moreover, as Sam Rayburn famously stated, all politics are local. Democratically elected officials respond best to the narrow interest of their separate constituencies. Global warming is not a local issue. An effective attack on global warming will require a heavy dose of altruism, which is in short supply in the world of geopolitics.


On the other hand, the environmental lobby has been very successful in capturing the attention of western democracies. The water and air quality in this country has been transformed since the Environmental Protection Agency was created during the Nixon administration. Maybe we will wake up, but crisis cannot be avoided merely by tilting wind mills and burning corn.


A United Nations sponsored group drafted the Kyoto Protocol which, among other things, required industrialized countries to reduce emissions on the average by 5.2% below 1990 levels.



Although almost all the major industrialized countries and underdeveloped countries signed and ratified the protocol, the United States never ratified it.


President Bush was bludgeoned by many environmental groups for withholding the treaty from the Senate, but opposition to Kyoto was bipartisan. In 1997, before the protocol was submitted to the countries for signature, the Senate unanimously adopted a resolution, sponsored by Senator Byrd of West Virginia among others, condemning any treaty that failed to imposed limitations on underdeveloped countries, which is the case with the Protocol. President Clinton never submitted the treaty for ratification. President Obama deftly avoided the issue by stating that there is no reason to ratify it now because it will soon be terminated.


The Protocol has not done particularly well even on those countries that ratified the treaty. Many of them will not comply with the terms of the treaty. In the mean time, although environmental regulation has been rigorous in the United States, the emissions increased by 20% between 1990 and 2007. Moreover, it has been predicted that compliance would cause a 1% to 4% reduction in our gross national product by 2010,and even the proponents concede that compliance would have a minimal effect on global warming.


One bone of contention has been the fact that China was exempted from limitations placed on other industrialized countries. China was not even on the map in 1990 with respect to carbon emissions. It is now the largest emitter in the world, although its contribution is more modest on a per capita basis than the United States.


The Kyoto Protocol has served the useful purpose of laying bare the complex matrix of differing national interests with respect to carbon emissions. Hard choices must be made to decide what are the legitimate needs of countries in various states of economic development.


Unfortunately seems to have withdrawn from its role as leader on world environmental issues by refraining for joining the Protocol and filing to initiate constructive alternatives. Like it or not, nothing will be accomplished without effective leadership coming out of the largest economy in the world.


We are probably farther away from constructive solutions than ever, even though we have a president who ran on a pro-environment platform. President Obama’s dance card is quite full. He may talk a good game on the environment, but look at his agenda. The economy has slipped into the top spot and allowed him to find new ways to spend amounts never imagined before. But he is not through. He is trying to avoid making universal medical care another empty promise. We are told that another trillion thrown at medical insurance will still leave a gigantic gap of uninsured persons. The social security mess will most likely come up again. And, by the way, did you notice? We are carrying on two wars in the Middle East. We can now update the old cliche and note that a trillion dollars here and a trillion there can add up to real money.


I suspect that a really serious effort to handle global warming is decades away, unless we can find a way to deal with the issue in a simpler less expensive manner. But that is the subject for another posting. See you next time.