Greenhouse gases trap heat and make the planet warmer. Human activities are responsible for almost all the increase in greenhouse gases in the atmosphere over the last 150 years. The US Environment Protection Agency reported that 65% of greenhouse gases are generated by combustion of fossil fuel. Of which, 45% is from coal, 35% is from oil, and 20% is from natural gas.
Greenhouse gas inventories are a type of emission inventory that are developed for a variety of reasons. Policy makers use inventories to develop strategies and policies for emissions reductions and to track the progress of those policies. and regulatory agencies and corporations rely on inventories to establish compliance records with allowable emission rates. Businesses, the public, and other interest groups use inventories to better understand the sources and trends in emissions. Unlike some other air emission inventories, greenhouse gas inventories include not only emissions from source categories, but also removals by carbon sinks. These removals are typically referred to as carbon sequestration.
The Industry sector produces the goods and raw materials we use every day. The greenhouse gases emitted during industrial production are split into two categories: direct emissions that are produced at the facility, and indirect emissions that occur off site, but are associated with the facility''s use of energy.
Direct emissions are produced by burning fuel for power or heat, through chemical reactions, and from leaks from industrial processes or equipment. Most direct emissions come from the consumption of fossil fuels for energy. A smaller amount, roughly a third, come from leaks from natural gas and petroleum systems, the use of fuels in production (e.g., petroleum products used to make plastics), and chemical reactions during the production of chemicals, iron and steel, and cement.
Indirect emissions are produced by burning fossil fuel at a power plant to make electricity, which is then used by an industrial facility to power industrial buildings and machinery.
Four Most Important Greenhouse Gases:
➛ Carbon Dioxide
➛Methane
➛ Nitrous Oxide
➛ Fluorinated Gases