Radiative forcing is the warming effect on our climate due to carbon dioxide (CO2) and other heat-trapping greenhouse gases (GHGs). In climate science radiative forcing is the change in net irradiance between different layers of the atmosphere. Typically, radiative forcing is quantified at the tropopause in units of watts per square meter. A positive forcing (more incoming energy) tends to warm the system, while a negative forcing (more outgoing energy) tends to cool it. Sources of radiative forcing include changes in insolation (incident solar radiation) and in concentrations of radiatively active gases and aerosols.
The World Meteorological Organization released a report which indicates that carbon dioxide is accountable for 85% of radiative forcing. While current CO2 levels are unprecedented, methane has also reached the highest levels ever recorded.
Between 1990 and 2011 there was a 30 percent increase in radiative forcing. It is no coincidence that the amount of greenhouse gases (GHGs) in the atmosphere has also reached a new record high in 2011
While atmospheric CO2 is currently more than 391 parts per million, levels of methane, known to be one of the worst GHGs, has reached 1,813 parts per billion. This new record is more than double (2.5x) pre-industrial levels.
© 2012, Richard Matthews. All rights reserved.
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The World Meteorological Organization released a report which indicates that carbon dioxide is accountable for 85% of radiative forcing. While current CO2 levels are unprecedented, methane has also reached the highest levels ever recorded.
Between 1990 and 2011 there was a 30 percent increase in radiative forcing. It is no coincidence that the amount of greenhouse gases (GHGs) in the atmosphere has also reached a new record high in 2011
While atmospheric CO2 is currently more than 391 parts per million, levels of methane, known to be one of the worst GHGs, has reached 1,813 parts per billion. This new record is more than double (2.5x) pre-industrial levels.
© 2012, Richard Matthews. All rights reserved.
Related Articles
Scientist Warn Time is Running Out to Avert a Climate Catastrophe
World Banks Warning: We Need to Act Now on Climate Change (Video)
World Resources Institute Warning About New Coal Plants
PricewaterhouseCoopers Climate Change Warning
International Renewable Energy Institute Climate Warning
Warning from the International Energy Agency: The World's Ongoing Reliance on Fossil Fuels Crushes Hopes of Averting Climate Change
World Meteorological Organization Climate Warning
World Bank Climate Change Warning
UNEP Warning: We are on The Brink of a Climate Catastrophe
World Bank Report Warns of A 4°C World
Comprehensive Review of the Science on Anthropogenic Climate Change
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September 2012 was the Warmest in Recorded History (NOAA)
Strong Body of Evidence for a Changing Climate
American Meteorological Society Corroborates Anthropogenic Climate Change
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