Monitoring of carbon dioxide will require global data collection ten times larger than current set up

Science Daily: Monitoring Earth's rising greenhouse gas levels will require a global data collection network 10 times larger than the one currently in place in order to quantify regional progress in emission reductions, according to a new research commentary by University of Colorado and NOAA researchers appearing in the April 25 issue of Science.

The authors, CU-Boulder Research Associate Melinda Marquis and National Oceanic and Atmospheric Administration scientist Pieter Tans, said with atmospheric carbon dioxide concentrations now at 385 parts per million and rising, the need for improved regional greenhouse gas measurements is critical. While the current observation network can measure CO2 fluxes on a continental scale, charting regional emissions where significant mitigation efforts are underway -- like California, New England and European countries -- requires a more densely populated network, they said.

"The question is whether scientists in the United States and around the world have what they need to monitor regional fluxes in atmospheric carbon dioxide," said Marquis, a scientist at the Cooperative Institute for Research in Environmental Sciences, a joint institute of CU-Boulder and NOAA. "Right now, they don't."

While CO2 levels are climbing by 2 parts per million annually -- a rate expected to increase as China and India continue to industrialize -- effective regional CO2 monitoring strategies are virtually nonexistent, she said. Scientists are limited in their ability to distinguish between distant and nearby carbon sources and "sinks," or storage areas, for example, by the accuracy of atmospheric transport models that reflect details of terrain, winds and the mixing of gases near observation sites….

Greenhouse gas emissions by country (2000), World Resources Institute, Wikimedia Commons, under the terms of the GNU Free Documentation license, Version 1.2