Zobrazeno 1 - 10
of 79
pro vyhledávání: '"S. Nehr"'
Autor:
J. Y. S. Pang, A. Novelli, M. Kaminski, I.-H. Acir, B. Bohn, P. T. M. Carlsson, C. Cho, H.-P. Dorn, A. Hofzumahaus, X. Li, A. Lutz, S. Nehr, D. Reimer, F. Rohrer, R. Tillmann, R. Wegener, A. Kiendler-Scharr, A. Wahner, H. Fuchs
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 8497-8527 (2022)
The oxidation of limonene by the hydroxyl (OH) radical and ozone (O3) was investigated in the atmospheric simulation chamber SAPHIR (Simulation of Atmospheric PHotochemistry In a large Reaction Chamber) in experiments performed at different nitric ox
Externí odkaz:
https://doaj.org/article/7231963e97734e62b28f164c6e912999
Autor:
Z. Tan, L. Hantschke, M. Kaminski, I.-H. Acir, B. Bohn, C. Cho, H.-P. Dorn, X. Li, A. Novelli, S. Nehr, F. Rohrer, R. Tillmann, R. Wegener, A. Hofzumahaus, A. Kiendler-Scharr, A. Wahner, H. Fuchs
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 16067-16091 (2021)
The 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 Chamber). The chemical structur
Externí odkaz:
https://doaj.org/article/71081402be5c4eb6993d21aa5e17e95e
Autor:
M. Rolletter, M. Kaminski, I.-H. Acir, B. Bohn, H.-P. Dorn, X. Li, A. Lutz, S. Nehr, F. Rohrer, R. Tillmann, R. Wegener, A. Hofzumahaus, A. Kiendler-Scharr, A. Wahner, H. Fuchs
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 11635-11649 (2019)
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 nitric oxide (NO) were below 120 pptv. Yield
Externí odkaz:
https://doaj.org/article/59e976ea84964bb99c60109e4cbb9056
Autor:
A. Novelli, M. Kaminski, M. Rolletter, I.-H. Acir, B. Bohn, H.-P. Dorn, X. Li, A. Lutz, S. Nehr, F. Rohrer, R. Tillmann, R. Wegener, F. Holland, A. Hofzumahaus, A. Kiendler-Scharr, A. Wahner, H. Fuchs
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 11409-11422 (2018)
Several previous field studies have reported unexpectedly large concentrations of hydroxyl and hydroperoxyl radicals (OH and HO2, respectively) in forested environments that could not be explained by the traditional oxidation mechanisms that large
Externí odkaz:
https://doaj.org/article/ae3fa84b7edf490ebfd5ffdd1c99a049
Autor:
M. Kaminski, H. Fuchs, I.-H. Acir, B. Bohn, T. Brauers, H.-P. Dorn, R. Häseler, A. Hofzumahaus, X. Li, A. Lutz, S. Nehr, F. Rohrer, R. Tillmann, L. Vereecken, R. Wegener, A. Wahner
Publikováno v:
Atmospheric Chemistry and Physics, Vol 17, Pp 6631-6650 (2017)
Besides isoprene, monoterpenes are the non-methane volatile organic compounds (VOCs) with the highest global emission rates. Due to their high reactivity towards OH, monoterpenes can dominate the radical chemistry of the atmosphere in forested are
Externí odkaz:
https://doaj.org/article/9139dd9bac6f494d814091620ad1d993
OH regeneration from methacrolein oxidation investigated in the atmosphere simulation chamber SAPHIR
Autor:
H. Fuchs, I.-H. Acir, B. Bohn, T. Brauers, H.-P. Dorn, R. Häseler, A. Hofzumahaus, F. Holland, M. Kaminski, X. Li, K. Lu, A. Lutz, S. Nehr, F. Rohrer, R. Tillmann, R. Wegener, A. Wahner
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 15, Pp 7895-7908 (2014)
Hydroxyl radicals (OH) are the most important reagent for the oxidation of trace gases in the atmosphere. OH concentrations measured during recent field campaigns in isoprene-rich environments were unexpectedly large. A number of studies showed that
Externí odkaz:
https://doaj.org/article/03f738b8e8c04fabb6cc73fd6cb4c442
Autor:
S. Nehr, B. Bohn, H.-P. Dorn, H. Fuchs, R. Häseler, A. Hofzumahaus, X. Li, F. Rohrer, R. Tillmann, A. Wahner
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 13, Pp 6941-6952 (2014)
Current photochemical models developed to simulate the atmospheric degradation of aromatic hydrocarbons tend to underestimate OH radical concentrations. In order to analyse OH budgets, we performed experiments with benzene, toluene, p-xylene and 1,3,
Externí odkaz:
https://doaj.org/article/e7aff34d3dcc455689e3c7ddd32e7c25
Autor:
E. U. Emanuelsson, M. Hallquist, K. Kristensen, M. Glasius, B. Bohn, H. Fuchs, B. Kammer, A. Kiendler-Scharr, S. Nehr, F. Rubach, R. Tillmann, A. Wahner, H.-C. Wu, Th. F. Mentel
Publikováno v:
Atmospheric Chemistry and Physics, Vol 13, Iss 5, Pp 2837-2855 (2013)
Secondary organic aerosol (SOA) formation from mixed anthropogenic and biogenic precursors has been studied exposing reaction mixtures to natural sunlight in the SAPHIR chamber in Jülich, Germany. In this study aromatic compounds served as examples
Externí odkaz:
https://doaj.org/article/d00874f0a59f44bd818d873442dbc1a5
Autor:
H. Fuchs, H.-P. Dorn, M. Bachner, B. Bohn, T. Brauers, S. Gomm, A. Hofzumahaus, F. Holland, S. Nehr, F. Rohrer, R. Tillmann, A. Wahner
Publikováno v:
Atmospheric Measurement Techniques, Vol 5, Iss 7, Pp 1611-1626 (2012)
During recent field campaigns, hydroxyl radical (OH) concentrations that were measured by laser-induced fluorescence (LIF) were up to a factor of ten larger than predicted by current chemical models for conditions of high OH reactivity and low NO con
Externí odkaz:
https://doaj.org/article/1a415e159c21443c872dd2a8cd579efa
Autor:
M. Shao, L. M. Zeng, S. Nehr, S. R. Lou, X. Li, Y. Kondo, K. Kita, M. Hu, R. Häseler, T. Brauers, C. C. Chang, B. Bohn, H. Fuchs, F. Holland, F. Rohrer, K. D. Lu, A. Wahner, Y. H. Zhang, A. Hofzumahaus
Publikováno v:
Atmospheric Chemistry and Physics, Vol 12, Iss 3, Pp 1541-1569 (2012)
Ambient OH and HO2 concentrations were measured by laser induced fluorescence (LIF) during the PRIDE-PRD2006 (Program of Regional Integrated Experiments of Air Quality over the Pearl River Delta, 2006) campaign at a rural site downwind of the megacit
Externí odkaz:
https://doaj.org/article/804780ffeefd47e584b5f90129c8085a