Articles | Volume 12, issue 8
https://doi.org/10.5194/amt-12-4149-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-12-4149-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
01 Aug 2019
Research article |
| 01 Aug 2019
| 01 Aug 2019
Recent improvements of long-path DOAS measurements: impact on accuracy and stability of short-term and automated long-term observations
Jan-Marcus Nasse
CORRESPONDING AUTHOR
Institute of Environmental Physics, University of Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
Philipp G. Eger
Institute of Environmental Physics, University of Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
now at: Max Planck Institute for Chemistry, Hahn-Meitner-Weg 1, 55128 Mainz, Germany
Denis Pöhler
Institute of Environmental Physics, University of Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
Stefan Schmitt
Institute of Environmental Physics, University of Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
Udo Frieß
Institute of Environmental Physics, University of Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
Ulrich Platt
Institute of Environmental Physics, University of Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
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- Evaluation of transport processes over North China Plain and Yangtze River Delta using MAX-DOAS observations Y. Song et al. 10.5194/acp-23-1803-2023
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- Comparing Short-Term Volatile Organic Compound Measurements in Fenceline Environments Using Multiple Mobile Air Monitoring Platforms and Methods J. Coughlin et al. 10.1021/acsestair.4c00169
- Ultra-broadband incoherent sources based on laser-sustained plasma H. Hu et al. 10.1016/j.optlastec.2025.113098
- Ultra-broadband coherent open-path spectroscopy for multi-gas monitoring in wastewater treatment R. Krebbers et al. 10.1016/j.ese.2025.100554
- Long-term observations of NO2 using GEMS in China: Validations and regional transport Y. Li et al. 10.1016/j.scitotenv.2023.166762
- A Hyperspectral Analysis-Based Approach for Estimation of Wear Metal Content in Lubricating Oil M. Li et al. 10.3390/lubricants13090393
- Intercomparison of MAX-DOAS vertical profile retrieval algorithms: studies on field data from the CINDI-2 campaign J. Tirpitz et al. 10.5194/amt-14-1-2021
- Multispecies gas detection using mid-infrared open-path Fourier transform and upconversion spectroscopy Y. Lin et al. 10.1364/OE.568143
- Detection of Aircraft Emissions Using Long-Path Differential Optical Absorption Spectroscopy at Hefei Xinqiao International Airport J. Duan et al. 10.3390/rs14163927
- Inter-comparison of MAX-DOAS measurements of tropospheric HONO slant column densities and vertical profiles during the CINDI-2 campaign Y. Wang et al. 10.5194/amt-13-5087-2020
- Standoff chemical plume detection in turbulent atmospheric conditions with a swept-wavelength external cavity quantum cascade laser M. Phillips et al. 10.1364/OE.385850
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12 citations as recorded by crossref.
- Evaluation of transport processes over North China Plain and Yangtze River Delta using MAX-DOAS observations Y. Song et al. 10.5194/acp-23-1803-2023
- Assessment of laboratory O4 (O2–O2 collision-induced) absorption cross-sections at 360 nm using atmospheric long-path DOAS observations B. Lauster et al. 10.5194/amt-18-3393-2025
- Comparing Short-Term Volatile Organic Compound Measurements in Fenceline Environments Using Multiple Mobile Air Monitoring Platforms and Methods J. Coughlin et al. 10.1021/acsestair.4c00169
- Ultra-broadband incoherent sources based on laser-sustained plasma H. Hu et al. 10.1016/j.optlastec.2025.113098
- Ultra-broadband coherent open-path spectroscopy for multi-gas monitoring in wastewater treatment R. Krebbers et al. 10.1016/j.ese.2025.100554
- Long-term observations of NO2 using GEMS in China: Validations and regional transport Y. Li et al. 10.1016/j.scitotenv.2023.166762
- A Hyperspectral Analysis-Based Approach for Estimation of Wear Metal Content in Lubricating Oil M. Li et al. 10.3390/lubricants13090393
- Intercomparison of MAX-DOAS vertical profile retrieval algorithms: studies on field data from the CINDI-2 campaign J. Tirpitz et al. 10.5194/amt-14-1-2021
- Multispecies gas detection using mid-infrared open-path Fourier transform and upconversion spectroscopy Y. Lin et al. 10.1364/OE.568143
- Detection of Aircraft Emissions Using Long-Path Differential Optical Absorption Spectroscopy at Hefei Xinqiao International Airport J. Duan et al. 10.3390/rs14163927
- Inter-comparison of MAX-DOAS measurements of tropospheric HONO slant column densities and vertical profiles during the CINDI-2 campaign Y. Wang et al. 10.5194/amt-13-5087-2020
- Standoff chemical plume detection in turbulent atmospheric conditions with a swept-wavelength external cavity quantum cascade laser M. Phillips et al. 10.1364/OE.385850
1 citations as recorded by crossref.
Latest update: 17 Sep 2025
Short summary
We present several changes to the setup of long-path differential optical absorption spectroscopy (LP-DOAS) instruments, including the application of a laser-driven light source, a modified coupling of the measurement signal between components, improved stray-light suppression, and better signal homogenization measures. These changes reduce detection limits of typical trace-gas species by a factor of 3–4 compared to previous setups and enable automated long-term observations in Antarctica.
We present several changes to the setup of long-path differential optical absorption...
