The Scientific American reports,”the United States is developing a system to track atmospheric levels of carbon dioxide,the main greenhouse gas,which could help scientists project future climate change,a government researcher said.The CarbonTracker monitors carbon dioxide levels throughout North America to create an Internet-based map.Carbon-emitting areas,such as cities and industry centers,show up in red and carbon sinks,such as forests, are represented in blue.Pieter Tans, head of the National Oceanic and Atmospheric Administration’s greenhouse gas cycles group,which created the system,said it could help researchers verify their climate models.It could also facilitate any future trade in carbon credits by monitoring whether industries are actually cutting emissions, he said.The tracker will soon use more data from sources,including monitors in airplanes and countries beyond North America,to broaden the map”.

U.S. developing system to track global warming gas