Comparison of the leading technologies to measure greenhouse gases from soil
A new study report compares six different technologies for measurements of greenhouse gases (GHGs) from the soil. In recent decades, several technologies have been developed to measure GHG concentrations and fluxes. For the first time, 6 devices using different measurement technologies were compared in the test measurements at CzechGlobe, the Global Change Research Institute in Brno, Czech Republic.
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Technologies and devices used:
- Two gas chromatographic systems with a barrier discharge ionization detector (GC-BID) and an electron capture detector (GC-ECD)
- Portable GHG analyzer based on laser absorption
- Photoacoustic field gas analyzer equipped with a dew point controller, and
- Two portable Fourier transform infrared (FTIR) devices
These devices and measurement methods were evaluated and compared by conducting experiments to measure absolute concentrations of GHGs (CO2, CH4 and N2O), as well as the fluxes of CO2 from artificial soils.
- Video 1: Background information of the comparison measurements
- Video 2: Katerina shows how to take samples for GC analysis
- Video 3: Hannes and Thomas explain their system to measure GHGs
- Video 4: Katerina explains how the "Barrel-test" was conducted
- Video 5: Is it possible to measure wetland sample with an ambient air gas analyzer?
- Video 6: Introduction to measurement Day #2
Overview of the measured gases:
|FTIR DX4040||x||x||x||NH3, H2O, CO|
|FTIR DX4015||x||x||x||NH3, H2O, CO|
|Photoacoustic Gas Monitor||x||x|