Dan Krotz:Berkeley Lab
Krotz:Berkeley Lab researchers link Co2 levels from fossil fuels to an upward trend radiative forcing at two locations
Look at:Dan Krotz:First Direct observation of Carbon Dioxide’s Increasing Greenhouse Effect at the Earth’s Surface. February 25.2015 USA
Forbes: Surprise Co2 Directly Linked to Global Warming—Forbes
Look at you tube:Surface Forcing Time Series- Berkeley Lab
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