Friday, September 25, 2009
Obama’s climate fantasies
President Barack Obama’s speech on global warming to the United Nations yesterday was based on fantasy. Here are some quotes from the speech followed by the reality.
Obama: ”...[T]he threat from climate change is serious, it is urgent, and it is growing.”
Reality: Global mean temperatures increased slightly from 1977 to 2000. Temperatures have been flat since then.
Obama: “Rising sea levels threaten every coastline.”
Reality: Sea levels have been rising on and off since the end of the last ice age 13,000 years ago. The rate of sea level rise has not increased in recent decades over the 19th and 20th century average.
Obama: “More powerful storms and floods threaten every continent.”
Reality: There is no upward global trend in storms or floods.
Obama: “More frequent drought and crop failures breed hunger and conflict in places where hunger and conflict already thrive.”
Reality: There is no upward global trend in major droughts. Reversals in large-scale cycles have meant that the southward march of the Sahara Desert into the Sahel has been reversed in recent years and the Sahara is now shrinking.
Obama: “On shrinking islands, families are already being forced to flee their homes as climate refugees.”
Reality: Some Pacific islanders may want to emigrate to New Zealand or Australia and are claiming that their islands are disappearing as the reason, but shrinkage has been minimal in recent decades because sea level rise has been minimal.
President Obama’s policy prescriptions are energy rationing and energy poverty disguised as growth and prosperity. The emissions reductions that he promises the United States will make through cap-and-trade legislation are dead in the water in the U.S. Senate and would not survive a second vote in the U.S. House. If enacted, cap-and-trade would consign the economy to perpetual stagnation and make the U.S. into a second-rate economic power.
His policy prescription for poor countries is to promise them massive “financial and technical assistance”. The track record of paying off poor countries is that it has lined the pockets of corrupt leaders and bureaucracies with billions and tens of billions of dollars, but has done nothing to help those countries become prosperous.
What these countries need is free markets and abolishing barriers to trade. The global warming policies advocated by the Obama Administration and the Democratic-controlled Congress would raise trade barriers and foster energy poverty throughout the world. Energy rationing is not the way forward and is not a message of hope for the poorest people in the world, who lack access to electricity and modern transportation.
Tuesday, September 8, 2009
Carbon Dioxide Levels Are a Blessing, Not a Problem
For centuries, bloodletting was an accepted medical procedure administered by physicians to treat patients for most illnesses. In today's world, we find it almost inconceivable that such a practice was condoned by entire populations.
Similarly, the claim that increased carbon dioxide (CO2) in the atmosphere is causing "global warming" has been accepted as "fact" in many countries worldwide. This belief has no more scientific foundation than the bloodletting of past generations.
Atmospheric carbon dioxide may be gradually rising, but there is no compelling evidence that such a modest rise in CO2, which still comprises significantly less than 1 percent of the Earth's atmosphere, will have any substantial negative effect on the Earth's environment.
Activists have successfully pressured governments to declare CO2 a pollutant and to take drastic measures to reduce the amount entering the atmosphere. By contrast, little publicity is given to the large number of qualified scientists who strongly contest the claims of the
One rationale given for claims that Earth's recent, moderate warming is being caused by increases in atmospheric CO2 is the high surface temperature of Venus, which stands at approximately 472° C. Venus is an Earth-size planet that has a predominantly CO2 atmosphere.
|If the Earth’s Atmosphere Were a Football Stadium|
|Atmospheric Gas||Percent in Atmosphere||People in the Stadium|
|Carbon Dioxide (CO2)||0.038%||4|
However, a comparison between Venus and the Earth's recent moderate increase in atmospheric CO2 is misleading, because there is 25,000 times as much CO2 in Venus's atmosphere as there is in the atmosphere of Earth.
CO2 Rare in Atmosphere
Earth's atmosphere is made up of several major gases. For simplicity, let us picture a football stadium with about 10,000 people in the stands. Assume each person represents a small volume of one type of gas. The approximate numbers of people representing the various types of gas are set out in the accompanying table.
Not included in the table is "water vapor," the amount of which varies in the atmosphere but probably averages about 2 percent at any point in time. Water vapor is the principal greenhouse gas and has more impact on global temperature than all other greenhouse gases combined.
Carbon dioxide is represented as only about 4 parts in 10,000, the smallest volume of any major atmospheric gas.
Moreover, those who name CO2 as a pollutant are not concerned with the 4 parts, but only with 1 part--the portion added during the past 150 years by the burning of fossil fuels. This 1/10,000 increase is the target of the Kyoto Protocol.
Oxygen More Important
After nitrogen, the second most common gas in the atmosphere is oxygen (O2), which is derived from CO2 through photosynthesis. In simple terms, photosynthesis is the process by which the leaves of trees and other plants take in CO2 from the atmosphere, retaining the carbon (C) for food while releasing the O2 back into the atmosphere. Some organisms in water also release free oxygen through this same process.
There was no free oxygen in the Earth's early atmosphere. Relatively late in the geologic history of the Earth, photosynthesizing organisms began to release oxygen. This has continued to the present, gradually changing the composition of the air to 21 percent free oxygen at the expense of CO2.
CO2 Now Historically Low
A thin veneer of sedimentary rocks blankets the Earth's surface and, along with ice cores from glaciers, can provide a reasonable geologic history of the Earth's past atmosphere. Scientific study of these rocks suggests the Earth's atmosphere in ancient times had considerably more CO2 than today.
Many experiments have demonstrated that the rate of plant growth is largely governed by the amount of CO2 in the atmosphere. As atmospheric CO2 increases, the growth rate of plants increases dramatically. Similarly, the plant growth rate decreases as atmospheric CO2 decreases.
Atmospheric carbon dioxide is the basic food for plants, and since plants provide the food for animal life (including humans), CO2 is the base of the food chain for all advanced life forms on Earth.
The present level of CO2 in the atmosphere is extremely low by historical standards. If atmospheric CO2 is significantly reduced, it is more likely that slower plant growth could affect world food supplies while having little effect on global warming. The life of all plants and animals on Earth is dependent on CO2 for food and oxygen.
Carbon dioxide is not a pollutant. It is the staff of life for our planet.
Dudley J. Hughes (email@example.com) is a retired geologist and author of A Geologic Reinterpretation of the Earth's Atmospheric History, Inferring a Major Role by CO2, published in 1998 by the College of Geosciences at Texas A & M University.