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.
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
Over the past decades, the eddy covariance (EC) community has clearly demonstrated the power of networks; regional networks and FLUXNET have shown us that combining data across multiple sites creates a whole that is greater than the sum of its parts. The FLUXNET database has been used extensively to evaluate satellite measurements, inform Earth system… More
From a dry vantage point on Twitchell Island, the deck of a cargo ship skims by, above a fragile levee that holds back the mighty San Joaquin River. A few centuries ago, standing in this same spot, we would have been covered in ten or twenty feet of peat, the residue from millennia of accumulating… More
North of Boston lies the Great Marsh, the largest remaining complex of salt marshes in New England. Here, the Plum Island Ecosystems LTER is studying long-term changes in coastal ecosystems, particularly those due to an acceleration in sea level rise. In contrast to most southern marshes, the Great Marsh is currently dominated by Spartina patens… More
Tucked away on the remote Seward Peninsula in the far west of Alaska lays the Arctic outpost for the Department of Energy’s Next Generation Ecosystem Experiment (NGEE-Arctic) and its associated AmeriFlux site (US-NGC). During the summer months each year, when US-NGC is accessible by road, blueberries fruit across the surrounding tundra and river valleys, attracting… More