Articles | Volume 13, issue 5
https://doi.org/10.5194/amt-13-2711-2020
© Author(s) 2020. 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-13-2711-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Calibration of an airborne HOx instrument using the All Pressure Altitude-based Calibrator for HOx Experimentation (APACHE)
Atmospheric Chemistry Department, Max Planck Institute for Chemistry, 55128 Mainz, Germany
Cheryl Ernest
Atmospheric Chemistry Department, Max Planck Institute for Chemistry, 55128 Mainz, Germany
now at: Department of Neurology, University Medical Center of the Johannes Gutenberg University Mainz, 55131 Mainz, Germany
Korbinian Hens
Atmospheric Chemistry Department, Max Planck Institute for Chemistry, 55128 Mainz, Germany
now at: Hübner GmbH & Co KG – Division Hübner
Photonics, 34123 Kassel, Germany
Umar Javed
Atmospheric Chemistry Department, Max Planck Institute for Chemistry, 55128 Mainz, Germany
Forschungszentrum Jülich GmbH, IEK-8, 52425 Jülich, Germany
Thomas Klimach
Atmospheric Chemistry Department, Max Planck Institute for Chemistry, 55128 Mainz, Germany
Monica Martinez
Atmospheric Chemistry Department, Max Planck Institute for Chemistry, 55128 Mainz, Germany
Markus Rudolf
Atmospheric Chemistry Department, Max Planck Institute for Chemistry, 55128 Mainz, Germany
Jos Lelieveld
Atmospheric Chemistry Department, Max Planck Institute for Chemistry, 55128 Mainz, Germany
Atmospheric Chemistry Department, Max Planck Institute for Chemistry, 55128 Mainz, Germany
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- Isoprene nitrates drive new particle formation in Amazon’s upper troposphere J. Curtius et al. https://doi.org/10.1038/s41586-024-08192-4
10 citations as recorded by crossref.
- Measurement report: Photochemical production and loss rates of formaldehyde and ozone across Europe C. Nussbaumer et al. https://doi.org/10.5194/acp-21-18413-2021
- Needs and challenges of optical atmospheric monitoring on the background of carbon neutrality in China W. Liu & C. Xing https://doi.org/10.1007/s11783-024-1833-2
- Modification of a conventional photolytic converter for improving aircraft measurements of NO2 via chemiluminescence C. Nussbaumer et al. https://doi.org/10.5194/amt-14-6759-2021
- Comparison of temperature-dependent calibration methods of an instrument to measure OH and HO2 radicals using laser-induced fluorescence spectroscopy F. Winiberg et al. https://doi.org/10.5194/amt-16-4375-2023
- Measurement report: Observation-based formaldehyde production rates and their relation to OH reactivity around the Arabian Peninsula D. Dienhart et al. https://doi.org/10.5194/acp-21-17373-2021
- Airborne remote sensing of nitrous acid in the troposphere: potential sources of excess HONO B. Weyland et al. https://doi.org/10.5194/acp-26-6825-2026
- Central role of nitric oxide in ozone production in the upper tropical troposphere over the Atlantic Ocean and western Africa I. Tadic et al. https://doi.org/10.5194/acp-21-8195-2021
- Measurement report: Hydrogen peroxide in the upper tropical troposphere over the Atlantic Ocean and western Africa during the CAFE-Africa aircraft campaign Z. Hamryszczak et al. https://doi.org/10.5194/acp-23-5929-2023
- Formaldehyde and hydroperoxide distribution around the Arabian Peninsula – evaluation of EMAC model results with ship-based measurements D. Dienhart et al. https://doi.org/10.5194/acp-23-119-2023
- Isoprene nitrates drive new particle formation in Amazon’s upper troposphere J. Curtius et al. https://doi.org/10.1038/s41586-024-08192-4
Saved (final revised paper)
Latest update: 08 Sep 2026
Short summary
In this study, a calibration device for OH and HO2 instruments is characterized at pressures of 275 to 1000 mbar, allowing instrument pressure sensitivity to be quantified to an accuracy of 22 % (1σ). Computational fluid dynamic simulations supporting the understanding of interactions between generated HOx and the instrument inlet led to enhanced determination of factors affecting instrument sensitivity.
In this study, a calibration device for OH and HO2 instruments is characterized at pressures of...