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From:Atmospheric Chemistry and Physics (Vol. 22, Issue 9) Peer-ReviewedMegacities and other major population centres (MPCs) worldwide are major sources of air pollution, both locally as well as downwind. The overall assessment and prediction of the impact of MPC pollution on tropospheric...
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From:Atmospheric Chemistry and Physics (Vol. 21, Issue 24) Peer-Reviewed
Measurement report: Photochemical production and loss rates of formaldehyde and ozone across Europe.
Various atmospheric sources and sinks regulate the abundance of tropospheric formaldehyde (HCHO), which is an important trace gas impacting the HO.sub.x (â¡ HO.sub.2 + OH) budget and the concentration of ozone (O.sub.3).... -
From:Atmospheric Chemistry and Physics (Vol. 21, Issue 20) Peer-ReviewedThe photo-oxidation of myrcene, a monoterpene species emitted by plants, was investigated at atmospheric conditions in the outdoor simulation chamber SAPHIR (Simulation of Atmospheric PHotochemistry In a Large Reaction...
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From:Atmospheric Measurement Techniques (Vol. 14, Issue 10) Peer-ReviewedNitrogen oxides (NOxâ¡NO+NO2) are centrally involved in the photochemical processes taking place in the Earth's atmosphere. Measurements of NO.sub.2, particularly in remote areas where concentrations are of the order of...
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From:Atmospheric Chemistry and Physics (Vol. 21, Issue 16) Peer-ReviewedThe oxidation of Î.sup.3 -carene and one of its main oxidation products, caronaldehyde, by the OH radical and O.sub.3 was investigated in the atmospheric simulation chamber SAPHIR under atmospheric conditions for...
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From:Atmospheric Chemistry and Physics (Vol. 19, Issue 10) Peer-Reviewed
Hydroxyl (OH) and peroxy radicals (HO.sub.2 and RO.sub.2) were measured in the Pearl River Delta, which is one of the most polluted areas in China, in autumn 2014. The radical observations were complemented by...
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From:Atmospheric Measurement Techniques (Vol. 10, Issue 10) Peer-ReviewedHydroxyl (OH) radical reactivity (k.sub.OH) has been measured for 18 years with different measurement techniques. In order to compare the performances of instruments deployed in the...
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From:Atmospheric Chemistry and Physics (Vol. 16, Issue 23) Peer-ReviewedNitryl chloride (ClNO.sub.2) is a dominant source of chlorine radical in polluted environment, and can significantly affect the atmospheric oxidative chemistry. However, the abundance of ClNO.sub.2 and its exact role...
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From:Atmospheric Chemistry and Physics (Vol. 21, Issue 10) Peer-ReviewedMechanisms of tropospheric ozone (O.sub.3) formation are generally well understood. However, studies reporting on net ozone production rates (NOPRs) directly derived from in situ observations are challenging and are...
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From:Atmospheric Chemistry and Physics (Vol. 20, Issue 21) Peer-ReviewedDuring the OMO (Oxidation Mechanism Observation) mission, trace gas measurements were performed on board the HALO (High Altitude Long Range) research aircraft in summer 2015 in order to investigate the outflow of the...
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From:Atmospheric Chemistry and Physics (Vol. 19, Issue 18) Peer-Reviewed
The photooxidation of the most abundant monoterpene, α-pinene, by the hydroxyl radical (OH) was investigated at atmospheric concentrations in the atmospheric simulation chamber SAPHIR. Concentrations of...
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From:Atmospheric Chemistry and Physics (Vol. 20, Issue 22) Peer-ReviewedThe photooxidation of pinonaldehyde, one product of the α-pinene degradation, was investigated in the atmospheric simulation chamber SAPHIR under natural sunlight at low NO concentrations (<0.2 ppbv) with and without an...
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From:Atmospheric Chemistry and Physics (Vol. 18, Issue 15) Peer-Reviewed
Several previous field studies have reported unexpectedly large concentrations of hydroxyl and hydroperoxyl radicals (OH and HO.sub.2, respectively) in forested environments that could not be explained by the...
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From:Atmospheric Measurement Techniques (Vol. 9, Issue 7) Peer-ReviewedAtmospheric O.sub.3  →  O(.sup.1 D) photolysis frequencies j(O.sup.1 D) are crucial parameters for atmospheric photochemistry because of their...
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From:Atmospheric Chemistry and Physics (Vol. 17, Issue 7) Peer-ReviewedThe HD(CP).sup.2 Observational Prototype Experiment (HOPE) was performed as a major 2-month field experiment in Jülich, Germany, in April and May 2013, followed by a smaller campaign in Melpitz, Germany, in...
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From:Atmospheric Chemistry and Physics (Vol. 20, Issue 6) Peer-ReviewedTheoretical, laboratory, and chamber studies have shown fast regeneration of the hydroxyl radical (OH) in the photochemistry of isoprene, largely due to unimolecular reactions which were previously thought not to be...
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From:Atmospheric Chemistry and Physics (Vol. 16, Issue 22) Peer-ReviewedCharacterization of daytime sources of nitrous acid (HONO) is crucial to understand atmospheric oxidation and radical cycling in the planetary boundary layer. HONO and numerous other atmospheric trace constituents were...
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From:Atmospheric Chemistry and Physics (Vol. 17, Issue 1) Peer-ReviewedIn 2014, a large, comprehensive field campaign was conducted in the densely populated North China Plain. The measurement site was located in a botanic garden close to the small town Wangdu, without major industry but...