AmeriFlux is a long-term carbon dioxide measuring and monitoring network to help define the global carbon dioxide budget, improve predictions of future carbon dioxide concentrations, and enhance understanding of net ecosystem productivity and carbon sequestration of the terrestrial biosphere. DOE scientists studied key environmental and meteorological drivers from different vegetation types at 56 AmeriFlux sites that influence their ability to measure the fluxes of carbon dioxide. Using 305 site years worth of data and a statistical analysis of the cluster differences, the authors identified light intensity, vegetation type, and water vapor as key factors that impact the pattern and magnitude of the turbulent exchange. These results will improve our ability to measure and model carbon dioxide fluxes in diverse ecosystems.
Reference: Schmidt, A., C. Hanson, J. Kathilankal, and B. E. Law. 2011. “Classification and Assessment of Turbulent Fluxes above Ecosystems in North America with Self-Organizing Feature Map Networks,” Agricultural and Forest Meteorology 151, 508–20.
Contact: Daniel Stover, SC-23.1, (301) 903-0289, Mike Kuperberg, SC-23.1, (301) 903-3281
SC-33.1 Earth and Environmental Sciences Division, BER
BER supports basic research and scientific user facilities to advance DOE missions in energy and environment. More about BER
Mar 23, 2021
Molecular Connections from Plants to Fungi to Ants
Lipids transfer energy and serve as an inter-kingdom communication tool in leaf-cutter ants&rsqu [more...]
Mar 19, 2021
Microbes Use Ancient Metabolism to Cycle Phosphorus
Microbial cycling of phosphorus through reduction-oxidation reactions is older and more widespre [more...]
Feb 22, 2021
Warming Soil Means Stronger Microbe Networks
Soil warming leads to more complex, larger, and more connected networks of microbes in those soi [more...]
Jan 27, 2021
Labeling the Thale Cress Metabolites
New data pipeline identifies metabolites following heavy isotope labeling.
Aug 31, 2020
Novel Bacterial Clade Reveals Origin of Form I Rubisco
List all highlights (possible long download time)