Gas sensors for climate research
<p>The availability of datasets providing information on the spatial and temporal evolution of greenhouse gas concentrations is of high relevance for the development of reliable climate simulations. However, current gas detection technologies do not allow for obtaining high-quality data at...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2018-10-01
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| Series: | Journal of Sensors and Sensor Systems |
| Online Access: | https://www.j-sens-sens-syst.net/7/535/2018/jsss-7-535-2018.pdf |
| Summary: | <p>The availability of datasets providing information on the spatial and
temporal evolution of greenhouse gas concentrations is of high relevance for
the development of reliable climate simulations. However, current gas
detection technologies do not allow for obtaining high-quality data at
intermediate spatial scales with high temporal resolution. In this regard the
deployment of a wireless gas sensor network equipped with in situ gas
analysers may be a suitable approach. Here we present a novel, non-dispersive
infrared absorption spectroscopy (NDIR) device that can possibly act as a
central building block of a sensor node to provide high-quality data of
carbon dioxide (CO<sub>2</sub>) concentrations under field conditions at a
high measurement rate. Employing a gas-based, photoacoustic detector we
demonstrate that miniaturized, low-cost, and low-power consuming
CO<sub>2</sub> sensors may be built. The performance is equal to that of
standard NDIR devices but at a much reduced optical path length. Because of
the spectral properties of the photoacoustic detector, no cross-sensitivities
to humidity exist.</p> |
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| ISSN: | 2194-8771 2194-878X |