Ground Level CO₂ Concentration

The need for point source monitoring of greenhouse gases is growing as scientists look for ways to mitigate climate change from both natural and man-made sources. Mapping real time CO₂ concentrations can be done using the LI-8100A Analyzer Control Unit, without a soil chamber, to sample ambient CO₂ concentrations with integrated power, data storage and sampling hardware. By integrating a global positioning system (GPS) with the LI-8100A, CO₂ concentrations can be rapidly mapped over large spatial scales. CO₂ mapping can be used to screen large areas for potential CO₂ leaks and "hot" spots.

The 8100-405 CO₂ Mapping Kit is designed to interface with the LI-8100A Soil CO₂ Flux System, for measurements of ground level CO₂ concentration. The kit includes:

• GPS receiver and cable assemblies
• Mounting bracket for attaching to the Analyzer Control Unit
• Quick connect fitting and Bev-a-line tubing
  (for connecting user-supplied intake tube)

(Additional hardware must be supplied by the user depending on the application. Learn more from the technical note.)

Figure 2: CO₂ concentrations mapped across Lincoln, NE on
June 29, 2010.
The data show CO₂ concentrations overlaid on a map of downtown Lincoln. The transect is scaled such that ground level is 340 ppm. Peak concentrations are just under 1200 ppm.