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Unlike exhaust from burning coal and gas that contains CO 2 , burning hydrogen emits only water vapor and oxygen. Hydrogen is not a greenhouse gas, but its chemical reactions in the atmosphere affect greenhouse gases such as methane, ozone, and stratospheric water vapor. Sand et al.
Among the non-CO 2 pollutants are hydrofluorocarbons (HFCs), methane, tropospheric ozone, and black carbon soot. Reducing tropospheric ozone can improve public health as well as agricultural productivity. The next round of UN climate negotiations begins in Cancun today. million lives lost each year due to black carbon soot.
In the months following a pulse of NO x in the upper atmosphere, ozone production is stimulated causing a short-term warming. The corresponding reduction in CH 4 , which is an important ozone precursor, leads to a long-term reduction in ozone. —Stratton et al.
(The figure includes the direct effects and those indirect effects due to the production of tropospheric ozone and stratospheric water vapor.) In 2011, CH4 emissions from coal mining were 63.2 From 1990 to 2011, CH4 emissions from landfills decreased by 44.7 30.3%), with small increases occurring in some interim years. Tg CO 2 Eq.,
That being said, even a car that derives its energy from coal power plants would be far more clean. Having centralized energy production in that way allows for centralized pollution control measures, filters, so-called "clean coal" rather than depending on X number of cars, manufacturers, and consumers to deal with pollution control.
Soot—black and brown particles that absorb solar radiation—comes from two types of sources: fossil fuels such as diesel, coal, gasoline, jet fuel; and solid biofuels such as wood, manure, dung, and other solid biomass used for home heating and cooking around the world. Dessler et al., 2008] and methane [Schutz et al., Guenther et al.,
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