Cities have a complex mix of land uses, from commercial districts with dining and shops to residential neighborhoods linked by travel corridors, as well as industrial areas such as ports and factories. All of these different land uses lead to a diversity of urban sources that emit volatile organic compounds (VOCs) and greenhouse gasses such as carbon dioxide (CO2) and methane (CH4). Direct measurements and analysis of these species over time helps us understand human interactions with climate and air pollution. 

Carbon dynamics and greenhouse fluxes in a Florida native rangeland. The Science: Grazing lands, including both rangeland and pastureland, cover about 10.7 Mha in Southeastern United States; have a significant impact on the carbon balance in the region. Native rangelands in Florida extend over 3.1 Mha, and about 1.6 Mha of mostly non-forested areas cover… More

AmeriFlux’s Year of Methane (Fall 2018–2020—COVID extended the time) is coming to a close as the next theme, Year of Water Fluxes, moves to center stage. The Year of Methane has been a success, drawing attention to methane flux science, promoting the need for new sites in more diverse geographic locations and ecosystems, building support… More

To capture the spring release of greenhouse gasses from bog lakes, a team of intrepid UW-Madison researchers installed eddy covariance buoys on two frozen bog lakes in northern Wisconsin in March. These buoys provided under the loaner instrument program (LI-7700) by the AmeriFlux Management Project for the AmeriFlux Year of Methane are continually measuring carbon dioxide and methane fluxes and will continue doing so as ice melts and as the buoys settle into their summer home on the open water.

Dec 7-8 2019 The Coastal Carbon Research Coordination Network (CCRCN) held its second working group workshop this past December at NASA’s AMES Research Center in Mountain View, CA hosted by the US Geological Survey. This year’s working group is focused on improving predictions of methane emissions from coastal wetlands. Specifically, we aim to compile all… More

  This post was authored by Camilo Rey-Sanchez (current PostDoc at UC Berkeley, Biomet Lab) for the AmeriFlux Year of Methane. If you have done chamber measurements of methane (CH4) flux in wetlands, you have probably noticed a high spatial heterogeneity in your data. If you are lucky, you have gone further to identify certain… More

AmeriFlux scientists will join the greater Earth science community next week for the American Geophysical Union 2019 Fall meeting in San Francisco. This years meeting is historic as it marks the AGU centennial. AmeriFlux and the FLUXNET Early Career Network will be holding events during the week and the Early Career Organizers have provided a… More

AmeriFlux showcased the Year of Methane action year at the 2019 Annual Meeting with an oral session, methane posters, and three methane breakout discussions. Ruminants, Forests, and Wetland Management The Year of Methane talks illustrated the variety of new directions enabled by methane flux measurement. Dave Hollinger, a Forest Service research scientist, gave the invited… More