Vol. 39, issue 08, article # 3

Abstract:

Carbon dioxide is one of the main greenhouse gases; it significantly contributes to the atmosphere through natural processes and anthropogenic impacts. Therefore, the development and modernization of CO₂ sensing devices and technologies is an urgent applied problem. This paper presents the results of developing a mobile atmospheric CO₂ sensor based on tunable diode laser absorption spectroscopy in the 1567–1573 nm absorption band of the target gas. The mobile sensor was tested on a horizontal sensing path using a topographic target under mid-latitude summer conditions. The average CO₂ content in the atmosphere retrieved from experimentally recorded back reflected signals was 451.03 ppm with a deviation from the readings of a local gas analyzer of 6.16% for a single measurement and 428.02 ppm after averaging over 120 s. The results can be useful in studying the dynamics of atmospheric CO₂ content under background conditions, as well as in monitoring anthropogenic emissions from the industrial sector.

Keywords:

carbon dioxide, atmosphere, greenhouse gas, remote sensing, tunable diode laser absorption spectroscopy

Figures:

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