Eddy Covariance Case Studies & Applications
Dr. Mario Tenuta (University of Manitoba) uses an LI-7700 Open Path CH4 Analyzer, LI-7500 Open Path CO2/H2O Analyzer, and sonic anemometer for flux research in Churchill, Manitoba. Regarding the LI-7700, Dr. Tenuta says, "The lack of access to micromet techniques for methane emission determinations has been a big gap... The LI-7700 will allow us to fill in that gap. The ability to do methane determinations without much power draw is really exciting to researchers."
Dr. Jiquan Chen (University of Toledo) uses a mobile flux site at the Kellogg Biological Station in Michigan, which includes an LI-7700 Open Path CH4 Analyzer and LI-7500 Open Path CO2/H2O Analyzer.
The LI-7500 Open Path CO2/H2O Analyzer and the LI-7700 Open Path CH4 Analyzer measuring flux in the Everglades National Park in Florida.
The LI-7700 Open Path CH4 Analyzer and LI-7200 Enclosed CO2/H2O Analyzer used in a flux station by Dr. John Grace in Edinburgh.
The LI-7200 Enclosed CO2/H2O Analyzer, a sonic anemometer, and the LI-7700 Open Path CH4 Analyzer at a flux site near Mead, Nebraska.
Dr. Mario Tenuta (University of Manitoba) uses an LI-7700 Open Path CH4 Analyzer, LI-7500A Open Path CO2/H2O Analyzer, and sonic anemometer for flux research in Churchill, Manitoba.
The LI-7700 Open Path CH4 Analyzer and LI-7200 Enclosed CO2/H2O Analyzer covered in frost at an ICOS test site in a boreal wetland in Finland.
The LI-7500 Open Path CO2/H2O Analyzer and the LI-7700 Open Path CH4 Analyzer measuring flux in the Everglades National Park in Florida.
"We are happy with the LI-7700 sensor when compared to closed path tunable diode laser systems...It gives us a sensor to deploy where the scientific questions are interesting, rather than where there are power lines." - Dr. Dennis Baldocchi (University of California, Berkeley)
The LI-7500A Open Path CO2/H2O Analyzer, a sonic anemometer, and the LI-7700 Open Path CH4 Analyzer at a flux site near Mead, Nebraska.
Dr. Dennis Baldocchi (University of California, Berkeley) operates several flux sites that include LI-COR analyzers.
The LI-7500A Open Path CO2/H2O Analyzer, a sonic anemometer, and the LI-7700 Open Path CH4 Analyzer operate at a flux site in the Florida Everglades.
Dr. Jiquan Chen (University of Toledo) uses a mobile flux site which includes an LI-7700 Open Path CH4 Analyzer and LI-7500A Open Path CO2/H2O Analyzer at Kellogg Biological Station in Michigan.
"As a technician, I'm impressed with [the LI-7700 Open Path CH4 Analyzer's] robustness and ease of use." — Joe Verfaillie, Technician for Dr. Dennis Baldocchi (University of California, Berkeley)
Mr Hiroki Ikawa, a student at San-Diego State University, is gearing up to climb an eddy covariance tower that runs on a small portable generator (red), measuring CO2 and H2O fluxes with the LI-7500 Open Path CO2/H2O Analyzer. The tower is located on the shore of the Arctic Ocean at Point Barrow, Alaska, the northern most point of the US.
A solar-powered eddy covariance tower operated by Florida International University measures CH4, CO2 and H2O fluxes with LI-7700 Open Path CH4 Analyzer and LI-7500 Open Path CO2/H2O Analyzer in the sawgrass tropical wetland. The tower is located inside the wetlands of the Everglades National Park, a few hours from the southern most point of the continental US.
A specially designed irrigation pivot prepares to move over eddy covariance and radiation measurements towers at the Carbon Sequestration Research Facility of the University of Nebraska-Lincoln, located in the middle of the Great Plains near Mead, Nebraska. Fluxes of CO2 and H2O are measured with an LI-7500 Open Path CO2/H2O analyzer. These and other micrometeorological variables are measured at this site, even through irrigation events.
Mr. Dominic Lessard, a field technician at the University of British Columbia, works on an eddy covariance tower above the temperate rainforest on a Vancouver Island in the Pacific Ocean, located a few hours from Vancouver, Canada. Measurements of CO2 and H2O fluxes with an early prototype of the LI-7200 Enclosed CO2/H2O were conducted along side an LI-7500 Open Path CO2/H2O Analyzer.
It's Lonely at the Top Making Measurements at the Loneliest Place in the World
Dr. Christopher Spence and Newell Hedstrom of Environment Canada installed instrumentation, including the LI-7500 Open Path CO2/H2O Analyzer, at the Stannard Rock Lighthouse in Lake Superior, approximately 45 miles (72 km) north of Marquette, Michigan.
NEW! LI-7200 CO2/H2O Analyzer Combining the best of open and closed path analyzers
Dr. Robert Clement, University of Edinburgh School of GeoSciences, tested an LI-7200 in Griffin Forest, a Sitka spruce plantation affiliated with the CarboEurope network. In Griffin Forest, Dr. Clement is involved with studies of forest growth rates, the effects of thinning, and nitrogen deposition — all of which look at carbon uptake of the forest.
LI-7700 put to the test: "I'm impressed with its robustness and ease of use."
Joe Verfaillie, a University of California, Berkeley technician in Dennis Baldocchi's lab, has deployed the LI-7700 in a cow pasture, rice paddy, and a restored wetland. "As a technician, I'm impressed with its robustness and ease of use," he says. Their studies subjected the LI-7700 to a range of environments, including dusty conditions, and ongoing tests will demonstrate the performance of the LI-7700 in foggy and wet conditions.
Baldocchi adds, "We are happy with the LI-7700 sensor when compared to closed path tunable diode laser systems... It gives us a sensor to deploy where the scientific questions are interesting, rather than where there are power lines." Click here for more on Baldocchi's research.