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The National
Oceanic and Atmospheric Administration (NOAA) reports that atmospheric
concentrations of methane, a potent greenhouse gas, have begun to level out
after two centuries of increases. Methane levels have been constant for four
years now, but scientists are not certain why the steady increases of the
gas in the atmosphere since the dawn of the industrial age have stopped. One
theory is that a decrease in fossil fuel production in the former Soviet
Union may account for the decline. About 70 percent of methane emissions are
connected with human activities -- the burning of fossil fuels, intestinal
gas from livestock and farm animals, and the cultivation of rice paddies.
(14KB PDF file)
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The Climate and
Carbon Research (CCR) activity in the Center for Computational Science at
ORNL is a scientific research center that focuses on the computational
aspects of how the global climate and carbon systems interact with natural
and anthropogenic processes. The goal of CCS-CCR is to serve as a
world-class climate and carbon research center and be a focal point for the
computational climate and carbon simulation community.
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The
Environmental Protection Agency (EPA) provides an excellent overview of the
problem of global warming. The science of climate change is presented along
with the potential impacts of global warming as well as strategies to adapt
to, or mitigate, those potential impacts.
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