Articles | Volume 16, issue 21
https://doi.org/10.5194/amt-16-5125-2023
https://doi.org/10.5194/amt-16-5125-2023
Research article
 | 
03 Nov 2023
Research article |  | 03 Nov 2023

A portable reflected-sunlight spectrometer for CO2 and CH4

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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Atmos. Meas. Tech., 16, 6097–6110, https://doi.org/10.5194/amt-16-6097-2023,https://doi.org/10.5194/amt-16-6097-2023, 2023
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Cited articles

Addington, O., Zeng, Z.-C., Pongetti, T., Shia, R.-L., Gurney, K. R., Liang, J., Roest, G., He, L., Yung, Y. L., and Sander, S. P.: Estimating Nitrous Oxide (N2O) Emissions for the Los Angeles Megacity Using Mountaintop Remote Sensing Observations, Remote Sens. Environ., 259, 112351, https://doi.org/10.1016/j.rse.2021.112351, 2021. a
CARB (California Air Resources Board): CARB Pollution Mapping Tool v2.6 [data set], https://www.arb.ca.gov/carbapps/pollution-map (last access: 27 July 2023), 2023. a
Butz, A., Guerlet, S., Hasekamp, O., Schepers, D., Galli, A., Aben, I., Frankenberg, C., Hartmann, J.-M., Tran, H., Kuze, A., Keppel-Aleks, G., Toon, G., Wunch, D., Wennberg, P., Deutscher, N., Griffith, D., Macatangay, R., Messerschmidt, J., Notholt, J., and Warneke, T.: Toward Accurate CO2 and CH4 Observations from GOSAT, Geophys. Res. Lett., 38, L14812, https://doi.org/10.1029/2011GL047888, 2011. a
Butz, A., Dinger, A. S., Bobrowski, N., Kostinek, J., Fieber, L., Fischerkeller, C., Giuffrida, G. B., Hase, F., Klappenbach, F., Kuhn, J., Lübcke, P., Tirpitz, L., and Tu, Q.: Remote sensing of volcanic CO2, HF, HCl, SO2, and BrO in the downwind plume of Mt. Etna, Atmos. Meas. Tech., 10, 1–14, https://doi.org/10.5194/amt-10-1-2017, 2017. a
Christen, A.: Atmospheric Measurement Techniques to Quantify Greenhouse Gas Emissions from Cities, Urban Clim., 10, 241–260, https://doi.org/10.1016/j.uclim.2014.04.006, 2014. a
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Short summary
We developed a portable spectrometer (EM27/SCA) that remotely measures greenhouse gases in the lower atmosphere above a target region. The measurements can deliver insights into local emission patterns. To evaluate its performance, we set up the EM27/SCA above the Los Angeles Basin side by side with a similar non-portable instrument (CLARS-FTS). The precision is promising and the measurements are consistent with CLARS-FTS. In the future, we need to account for light scattering.