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greenhouse gas emissions

Synonyms: GHG emissions, GHG

reegle definition:

Greenhouse gas emissions cause dangerous anthropogenic climate change. Emissions include CO2, fluoridated gases, methane which are emitted by human activity such as deforestation and burning fossil fuels, and water vapour.

Wikipedia definition:

A greenhouse gas (sometimes abbreviated GHG) is a gas in an atmosphere that absorbs and emits radiation within the thermal infrared range. This process is the fundamental cause of the greenhouse effect. The primary greenhouse gases in the Earth's atmosphere are water vapor, carbon dioxide, methane, nitrous oxide, and ozone. In the Solar System, the atmospheres of Venus, Mars, and Titan also contain gases that cause greenhouse effects. Greenhouse gases greatly affect the temperature of the Earth; without them, Earth's surface would average about 33°C colder than the present average of 14 °C . Since the beginning of the Industrial Revolution, the burning of fossil fuels has contributed to a 40% increase in the concentration of carbon dioxide in the atmosphere from 280 ppm to 397 ppm, despite the uptake of a large portion of the emissions by various natural "sinks" involved in the carbon cycle. Anthropogenic carbon dioxide (CO2) emissions (i.e. , emissions produced by human activities) come from combustion of carbon based fuels, principally wood, coal, oil, and natural gas.

Source: dbpedia

Wikipedia definition (similar term):

The United States was the largest emitter of carbon dioxide emissions until 2006 when China overtook it. The United States' greenhouse gas (GHG) emissions 2012 projections for 2030 by the Department of Energy have dropped 28 percent from its 2007 projections regarding the U.S. energy industry, due to the recession and the hydraulic fracturing boom that has reduced the release of carbon dioxide into the Earth's atmosphere. While the Bush administration opted against Kyoto-type policies, the Obama administration and various state, local, and regional governments have attempted to adopt some Kyoto Protocol goals on a local basis. For example, the Regional Greenhouse Gas Initiative (RGGI), is a state-level emissions capping and trading program, which was founded on January 18, 2007, by eight northeastern U.S. states. The White House announced on 2009-11-25 that President Obama is offering a U.S. target for reducing greenhouse gas (GHG) emissions in the range of 17% below 2005 levels by 2020. The U.S. State Department is offering a nation-level perspective by releasing the Fourth US Climate Action Report to the United Nations Framework Convention on Climate Change, that includes measures to address climate change. The report shows that the country is on track to achieve President Bush's goal of reducing greenhouse gas intensity (the amount of GHG emissions per unit of gross domestic product) by 18 percent from 2002 to 2012. Over that same period, actual GHG emissions are projected to increase by 11 percent. The report estimates that in 2006, U.S. GHG emissions decreased 1.5 percent from 2005 to 7,075.6 million tonnes of carbon dioxide equivalent. This represents an increase of 15.1 percent from the 1990 levels of 6,146.7 million tonnes (or 0.9 percent annual increase), and an increase of 1.4 percent from the 2000 levels of 6,978.4 million tonnes. By 2012 GHG emissions are projected to increase to more than 7,709 million tonnes of carbon dioxide equivalent, which will be 26 percent above 1990 levels.

Source: dbpedia

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