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Concentrations of greenhouse gases in the atmosphere rose to yet another high in 2010, according to the UN's weather agency.
Levels of carbon dioxide (CO2) - the major contributor to climate change - rose by 2.3 parts per million between 2009 and 2010.
That exceeds the average for the past decade of 2.0 parts per million, the World Meteorological Organization says.
The latest round of UN climate talks begin in South Africa in two weeks.
"The atmospheric burden of greenhouse gases due to human activities has yet again reached record levels since pre-industrial time," said WMO Secretary-General Michel Jarraud.
Concentrations of CO2 reached 389 parts per million in 2010 - the highest such concentrations since the start of the industrial era in 1750.
No let up in greenhouse gas rise
Seeded on Mon Nov 21, 2011 8:39 AM EST
Article Source: BBC News - Japan hit by massive earthquake
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