The findings from the World Meteorological Association also predict 2009 will be the 5th warmest year since global record-keeping began in 1850.

VOA: standard.2009.12.09

Greenhouse gases in the atmosphere hit a new record high in 2011, the World Meteorological Organization has said.

BBC: Greenhouse gases hit record high

Last year equaled the hottest on record with 2005 and 1998, according to the World Meteorological Organization.

FORBES: Global Food Wars

"The atmospheric burden of greenhouse gases due to human activities has yet again reached record levels since pre-industrial time, " said World Meteorological Organization Secretary-General Michel Jarraud.

BBC: No let up in greenhouse gas rise