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Specifications and examples of application of laser gas-analyzers of near- and mid-infrared ranges for
diagnostics of greenhouse gases (CO2, C2H4, and CH4) emission by vegetation biosystems both under standard
conditions and under impacts of natural and anthropogenic stresses are considered in the report. The gas-analyzer
complex includes:
1) gas-analyzer with a multipass absorption cell based on the frequency-tunable diode laser (1600-1650 nm) for
measuring sub-background methane concentrations (≤ 20 ppbV);
2) gas-analyzer based on the wave-guide CO2-laser equipped with the intracavity acoustic detector capable of fast
frequency scanning in the 9 and 10 μm generation bands and having the ethylene-sensitivity better than 1 ppbV.
The technology of measurements of gas emission by plant stripped leaves and coniferous needles is described
and the measurements of CO2 and CH4 emissions are presented.
B. G. Ageev,V. A. Kapitanov,Yu. N. Ponomarev,V. A. Vasiliev,A. I. Karapuzikov, andI. V. Sherstov
"Laser gas analyzers for studying kinetics of gas exchange between vegetation biosystems and atmosphere", Proc. SPIE 6522, Thirteenth Joint International Symposium on Atmospheric and Ocean Optics/ Atmospheric Physics, 65221Q (1 November 2006); https://doi.org/10.1117/12.723214
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B. G. Ageev, V. A. Kapitanov, Yu. N. Ponomarev, V. A. Vasiliev, A. I. Karapuzikov, I. V. Sherstov, "Laser gas analyzers for studying kinetics of gas exchange between vegetation biosystems and atmosphere," Proc. SPIE 6522, Thirteenth Joint International Symposium on Atmospheric and Ocean Optics/ Atmospheric Physics, 65221Q (1 November 2006); https://doi.org/10.1117/12.723214