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Guessing At CO2 Emissions
Supposedly, human activity is responsible for the detected rise in atmospheric CO2 levels over the past century. But do we really know were gas emissions come from and how great they are? As it turns out, greenhouse gas emissions are measured using statistical data without testing the results against the actual increases of these gases in the atmosphere. Regardless, climate change alarmists insist that human emissions must be reduced. A revealing perspective article in the June 4, 2010, issue of Science states “this is like dieting without weighing oneself.” Currently, science is only guessing at where CO2 emissions come from.

Scientists are coming to the realization that claims about greenhouse gas emissions can have integrity only if verified by direct atmospheric measurements. Emissions data are produced by greenhouse gas emitters of all sizes—farms, factories and entire nations. These emissions are often quoted with high precision but, as Euan Nisbet and Ray Weiss state in their article, “misreporting still occurs, whether by simple error, ignorance, or intention.” They claim that carbon-equivalent emissions are currently assessed by “bottom-up” methods, which are made up from a variety of local statistics such as fuel consumption or numbers of cows. When these measured “bottom-up” emissions are rolled up to a global scale, the amounts can disagree by factors of two or more when compared with direct atmospheric measurements....