Articles | Volume 24, issue 20
https://doi.org/10.5194/acp-24-11883-2024
https://doi.org/10.5194/acp-24-11883-2024
Research article
 | 
24 Oct 2024
Research article |  | 24 Oct 2024

Investigating carbonyl compounds above the Amazon rainforest using a proton-transfer-reaction time-of-flight mass spectrometer (PTR-ToF-MS) with NO+ chemical ionization

Akima Ringsdorf, Achim Edtbauer, Bruna Holanda, Christopher Poehlker, Marta O. Sá, Alessandro Araújo, Jürgen Kesselmeier, Jos Lelieveld, and Jonathan Williams

Data sets

Carbonyl Compounds above the Amazon Rainforest sampled in 2019 - measured with an E/N value of 120 Townsend (in the drift tube) and calibrated with a standard gas containing volatile organic compounds Akima Ringsdorf et al. https://doi.org/10.17871/atto.355.4.1493

Carbonyl Compounds above the Amazon Rainforest sampled in 2019 - measured with an E/N value of 70 Townsend (in the drift tube) and calibrated with a standard gas containing volatile organic compounds Akima Ringsdorf et al. https://doi.org/10.17871/atto.354.3.1494

Carbonyl Compounds above the Amazon Rainforest sampled in 2019 - measured with an E/N value of 120 Townsend (in the drift tube) and quantified based on their reaction rate Akima Ringsdorf et al. https://doi.org/10.17871/atto.353.7.1495

Carbonyl Compounds above the Amazon Rainforest sampled in 2019 - measured with an E/N value of 70 Townsend (in the drift tube) and quantified based on their reaction rate Akima Ringsdorf et al. https://doi.org/10.17871/atto.352.7.1496

ATTO Weather Station data (323m) with basic meteorological parameters (atmospheric pressure, air temperature, air humidity, wind speed, wind direction, precipitation) for the year 2019 Christopher Pöhlker et al. https://doi.org/10.17871/atto.95.12.742

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Short summary
We show the average height distribution of separately observed aldehydes and ketones over a day and discuss their rainforest-specific sources and sinks as well as their seasonal changes above the Amazon. Ketones have much longer atmospheric lifetimes than aldehydes and thus different implications for atmospheric chemistry. However, they are commonly observed together, which we overcome by measuring with a NO+ chemical ionization mass spectrometer for the first time in the Amazon rainforest.
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