- WEB EXCLUSIVE
- PE COFFEEHAUS
Total emissions of the six main greenhouse gases in 2007 were equivalent to 7,150 million metric tons of CO2. These gases include CO2, methane, NOX, hydrofluorocarbons, perfluorocarbons and sulfur hexafluoride. The report indicates that overall emissions have grown by 17.2 percent from 1990 to 2007.
The increase in emissions in 2007 was due primarily to an increase in CO2 emissions associated with fuel and electricity consumption, the agency said. The following factors were primary contributors to this increase: (1) increased demand for heating fuels and electricity due to cooler winter and warmer summer conditions in 2007 than in 2006; (2) increased consumption of fossil fuels to generate electricity; and (3) a significant decrease (14.2 percent) in hydropower generation used to meet this demand.
The inventory also calculates CO2 emissions that are removed from the atmosphere by "sinks," e.g., through the uptake of carbon by forests, vegetation and soils.