greenhouse gases at record high

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GENEVA (AP) — The main global warming pollutant reached a record high level in the air in 2011, the U.N. weather agency said Tuesday.
Concentrations of heat-trapping carbon dioxide in the atmosphere
 averaged 390 parts per million during the year. That is up 40 percent 
from before the Industrial Age, when levels were about 280 parts per 
million, the World Meteorological Organization said.
Carbon
 dioxide, the chief greenhouse gas, stays in the atmosphere for 100 
years. Some of it is natural, coming mainly from decomposing dead plants
 and animals, but scientists say the bulk of it is from the burning of 
fossil fuels.
There have been 
350 billion metric tons of carbon dioxide added to the atmosphere since 
1750 and it "will remain there for centuries, causing our planet to warm
 further and impacting on all aspects of life on earth," said WMO 
Secretary-General Michel Jarraud. "Future emissions will only compound the situation."
Between
 1990 and 2011, carbon dioxide and other gas emissions caused a 30 
percent increase in the warming effect on the climate, the agency 
reported.
After carbon 
dioxide, methane has the biggest effect on climate. Atmospheric 
concentrations of methane also reached a new high of 1,813 parts per 
billion in 2011, up 159 percent from pre-industrial levels of about 700 
parts per billion. About 40 percent comes from natural sources such as 
termites and wetlands, but the rest is due to cattle breeding, rice 
agriculture, fossil fuel burning, landfills and incineration, the agency
 said.

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Piranha Members Profile Send Private Message Find Members Posts Add to Buddy List Instructor Joined: Feb/28/2008 Location: 19 Online Status: Offline Posts: 3664	Quote Reply Topic: greenhouse gases at record high Posted: Nov/21/2012 at 9:17pm
	GENEVA (AP) — The main global warming pollutant reached a record high level in the air in 2011, the U.N. weather agency said Tuesday. Concentrations of heat-trapping carbon dioxide in the atmosphere averaged 390 parts per million during the year. That is up 40 percent from before the Industrial Age, when levels were about 280 parts per million, the World Meteorological Organization said. Carbon dioxide, the chief greenhouse gas, stays in the atmosphere for 100 years. Some of it is natural, coming mainly from decomposing dead plants and animals, but scientists say the bulk of it is from the burning of fossil fuels. There have been 350 billion metric tons of carbon dioxide added to the atmosphere since 1750 and it "will remain there for centuries, causing our planet to warm further and impacting on all aspects of life on earth," said WMO Secretary-General Michel Jarraud. "Future emissions will only compound the situation." Between 1990 and 2011, carbon dioxide and other gas emissions caused a 30 percent increase in the warming effect on the climate, the agency reported. After carbon dioxide, methane has the biggest effect on climate. Atmospheric concentrations of methane also reached a new high of 1,813 parts per billion in 2011, up 159 percent from pre-industrial levels of about 700 parts per billion. About 40 percent comes from natural sources such as termites and wetlands, but the rest is due to cattle breeding, rice agriculture, fossil fuel burning, landfills and incineration, the agency said.

mrrorydigital Members Profile Send Private Message Find Members Posts Add to Buddy List Instructor Joined: Feb/09/2009 Location: 26 Online Status: Offline Posts: 942	Quote Reply Posted: Nov/21/2012 at 9:29pm
	Welcome to coffee talk I'm Linda Richmond. Today's topic is global warming. Talk amongst yourselfs.


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greenhouse gases at record high

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