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A portable reflected-sunlight spectrometer for CO2 and CH4

Mapping the greenhouse gases (GHGs) carbon dioxide (CO2) and methane (CH4) above source regions such as urban areas can deliver insights into the distribution and dynamics of local emission patterns. Here, we present the prototype development and an initial performance evaluation of a portable spect...

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Bibliographic Details
Main Authors: Löw, Benedikt (Author) , Kleinschek, Ralph (Author) , Enders, Vincent (Author) , Sander, Stanley P. (Author) , Pongetti, Thomas J. (Author) , Schmitt, Tobias (Author) , Hase, Frank (Author) , Kostinek, Julian (Author) , Butz, André (Author)
Format: Article (Journal)
Language:English
Published: 3 November 2023
In: Atmospheric measurement techniques
Year: 2023, Volume: 16, Issue: 21, Pages: 5125-5144
ISSN:1867-8548
DOI:10.5194/amt-16-5125-2023
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.5194/amt-16-5125-2023
Verlag, lizenzpflichtig, Volltext: https://amt.copernicus.org/articles/16/5125/2023/
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Author Notes:Benedikt A. Löw, Ralph Kleinschek, Vincent Enders, Stanley P. Sander, Thomas J. Pongetti, Tobias D. Schmitt, Frank Hase, Julian Kostinek, and André Butz
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Summary:Mapping the greenhouse gases (GHGs) carbon dioxide (CO2) and methane (CH4) above source regions such as urban areas can deliver insights into the distribution and dynamics of local emission patterns. Here, we present the prototype development and an initial performance evaluation of a portable spectrometer that allows for measuring CO2 and CH4 concentrations integrated along a long (> 10 km) horizontal path component through the atmospheric boundary layer above a target region. To this end, the spectrometer is positioned at an elevated site from which it points downward at reflection targets in the region, collecting the reflected sunlight at shallow viewing angles. The path-integrated CO2 and CH4 concentrations are inferred from the absorption fingerprint in the shortwave-infrared (SWIR) spectral range. While mimicking the concept of the stationary California Laboratory for Atmospheric Remote Sensing - Fourier Transform Spectrometer (CLARS-FTS) in Los Angeles, our portable setup requires minimal infrastructure and is straightforward to duplicate and to operate in various locations.
Item Description:Gesehen am 02.08.2024
Im Titel ist "2" und "4" tiefgestellt
Physical Description:Online Resource
ISSN:1867-8548
DOI:10.5194/amt-16-5125-2023

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