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Human activity is increasing the concentrations of greenhouse gases (GHG) in the atmosphere that have resulted in global temperature increases. Many countries have entered into agreements to limit and / or decrease GHG emissions. This requires high precision long-term observations to clearly evaluate the global carbon cycle and its effect on climate change. Natural air containing stable isotopes are used in GHG monitoring by measurement bodies such as GAW (Global Atmosphere Watch) and ICOS (Integrated Carbon Observation System) to calibrate analytical measurement equipment used in these measurements. This presentation will examine the natural air and isotopic mixture preparation process and the role of precisely characterized materials, highlighting stability of isotopic mixtures in natural air.
Topic : Theme 2: Accuracy requirements for atmospheric composition measurements across economic sectors, and temporal and spatial scales.
Reference : T2-A18
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