Changing Atmosphere

Based on trapped gases in ice cores in Antarctica, there has been a dramatic increase in greenhouse gases in the global atmosphere since the beginning of the Industrial Revolution. Samples indicate that in the last 200 years, CO2 has increased by 35 percent, methane by 600 percent, and nitrous oxide by 18 percent. Data for CO2 suggest that about 100 years ago there was an increase in the growth rate of atmospheric concentration, followed by another rate increase beginning about 50 years ago. About 50 years ago, the world consumption of hydrocarbons, combined oil and gas, surpassed coal in terms of energy content. The trend appears to be growing at an increasing.

A number of factors and processes unrelated to oil contribute to the rise in greenhouse gases, but the combustion of oil contributes to the concentration of CO2. The production of oil also contributes to atmospheric methane through the escape of light end hydrocarbons in the logistics. A portion of nitrous oxide gas is also indirectly produced as a result of oil in the form of fertilizers and exhaust from gasoline and diesel engines.

CO2 is the major source of greenhouse gas. It is possible to use CO2 in the production of oil from mature oil fields where production is marginal. This is known as enhanced oil recovery in a process known as a CO2 flood. The CO2 is pumped into the reservoir where it moves fluid by expansion and pressure, and by acting as solvent, collecting oil in the gas. The fluid is then brought to the surface where the CO2 is recycled to continue the process. Long-term, the CO2 is sequestered in the reservoir so that it is not part of CO2 inventory in the atmosphere.

sEE ALsO: BP; Coal; Natural Gas; Oil, Consumption of.

BIBLIOGRApHY. Carbon Dioxide Information Analysis Center, (cited November 2007); Nick Hopwood and Jordan Cohen, "Greenhouse Gases and Society," University of Michigan, (cited November 2007); Intergovernmental Panel on Climate Change, Climate Change 2007: The Physical Science Basis. Contributions of Working Group 1 to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (Cambridge University Press, 2007).

Roger Brown Western Illinois University

Renewable Energy Eco Friendly

Renewable Energy Eco Friendly

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable.

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