Distribution of hydrogen peroxide over Europe during the BLUESKY aircraft campaign
Abstract 2 O2) and the sum of organic hydroperoxides over Europe during the Chemistry of the Atmosphere – Field Experiments in Europe (CAFE-EU, also known as BLUESKY) aircraft campaign using a wet chemical monitoring system, the HYdrogen Peroxide and Higher Organic Peroxide (HYPHOP) monitor. The campaign took place in May–June 2020 over central and southern Europe with two additional flights dedicated to the North Atlantic flight corridor. Airborne measurements were performed on the High Altitude and LOng-range (HALO) research operating out of Oberpfaffenhofen (southern Germany). We report average mixing ratios for H2 O2 of 0.32 ± ± ± v in the upper and middle troposphere and the boundary layer over Europe, respectively. Vertical profiles of measured H2 O2 reveal a significant decrease, in particular above the boundary layer, contrary to previous observations, most likely due to cloud scavenging and subsequent rainout of soluble species. In general, the expected inverted C-shaped vertical trend with maximum hydrogen peroxide mixing ratios at 3–7 km was not found during BLUESKY. This deviates from observations during previous airborne studies over Europe, i.e., 1.64 ± v during the HOOVER campaign and 1.67 ± v during UTOPIHAN-ACT II/III. Simulations with the global chemistry–transport model EMAC partly reproduce the strong effect of rainout loss on the vertical profile of H2 O2. A sensitivity study without H2 O2 scavenging performed using EMAC confirms the strong influence of clouds and precipitation scavenging on hydrogen peroxide concentrations. Differences between model simulations and observations are most likely due to difficulties in the simulation of wet scavenging processes due to the limited model resolution.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Distribution of hydrogen peroxide over Europe during the BLUESKY aircraft campaign ; volume:22 ; number:14 ; year:2022 ; pages:9483-9497 ; extent:15
Atmospheric chemistry and physics ; 22, Heft 14 (2022), 9483-9497 (gesamt 15)
- Urheber
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Hamryszczak, Zaneta T.
Pozzer, Andrea
Obersteiner, Florian
Bohn, Birger
Steil, Benedikt
Lelieveld, Jos
Fischer, Horst
- DOI
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10.5194/acp-22-9483-2022
- URN
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urn:nbn:de:101:1-2022072805230518917044
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:30 MESZ
Datenpartner
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Beteiligte
- Hamryszczak, Zaneta T.
- Pozzer, Andrea
- Obersteiner, Florian
- Bohn, Birger
- Steil, Benedikt
- Lelieveld, Jos
- Fischer, Horst
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