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

The Science How will forests cope as droughts become more frequent and severe? Piñon-juniper woodlands in the American Southwest are a model system for understanding the effects of drought on trees due to the frequent periods of water stress that characterize this region. Moreover, the dominant tree species in this ecosystem display markedly different drought… More

Thanks to all who attended the 2018 AmeriFlux Data-Tech Workshop and PI Meeting in Bloomington, Indiana. A special thanks to Kim Novick and team for their outstanding hospitality. All of you contributed to making these events a great success. Presentations available now! The AmeriFlux Data and Tech Workshop presentations are now available. The 2018 AmeriFlux… More

The AmeriFlux Tech Team has completed another successful site visit season. This year they visited nine AmeriFlux sites. The below gallery features an image from each site visit. The Tech Team is planning for the upcoming site visit season. If you would like to learn more about site visits and what to expect, please see our… More

The previous AmeriFlux Tech blog post regarding biases in CO2 flux measurements contributed by Manuel Helbig generated some questions from the community.  Campbell Scientific provided a detailed response to address the questions. The response describes the new gas analyzer operating system that accounts for the spectroscopic effects using high frequency sonic temperature. The response also includes a methodology… More

Updated May 24, 2017 to include response from Campbell Scientific (see bottom of post).  Across FLUXNET, CO2 fluxes between ecosystems and the atmosphere are measured using various open- and closed-path gas analyzers. A few years ago, Campbell Scientific introduced new open-path CO2/H2O gas analyzers (IRGA; EC150 and IRGASON), thus, further diversifying the choices for eddy covariance… More