Soil Greenhouse Gas Monitoring
Soils are a major source of Greenhouse Gases (GHGs) due to the biological and non-biological process that take place within them. The monitoring of GHGs from soil therefore represents an important part of climate change research. Typically, researchers will need to monitor GHGs such as Carbon Dioxide (CO2), Methane (CH4) and Nitrous Oxide (N2O); all of which are easily measured simultaneously with Gasmet FTIR analysers. However, one of the major advantages of Gasmet FTIR is the ability to also monitor almost any other gas. For example, many researchers also monitor water, carbon monoxide and ammonia, amongst others.
There are two main methods for the measurement of GHG soil fluxes:
- Samples are (laboriously) collected by syringe for laboratory analysis, or
- Measurements are undertaken onsite with a transportable analyser
Historically, field analysis has been impractical because instrumentation has been unsuitable for field operation and mains power was required. However, the development of portable, robust, battery-powered FTIR gas analysers by Gasmet Technologies has enabled the reliable onsite analysis of GHGs.
By conducting measurements onsite, researchers are able to avoid the delays, costs and sample transport errors that are incurred by lab analysis. Furthermore, Gasmet's FTIR analysers enable the creation of a large number of data points in a short period; improving the quality of data and reducing the time and costs of monitoring.
In the following video, Dr. Joseph Storlien (Assistant Professor of Environmental Studies, Saint John's University, USA) describes his experience with Gasmet FTIR analysers in the measurement of greenhouse gas soil fluxes.