Zobrazeno 1 - 10
of 699
pro vyhledávání: '"A. Hofzumahaus"'
Autor:
C. Cho, H. Fuchs, A. Hofzumahaus, F. Holland, W. J. Bloss, B. Bohn, H.-P. Dorn, M. Glowania, T. Hohaus, L. Liu, P. S. Monks, D. Niether, F. Rohrer, R. Sommariva, Z. Tan, R. Tillmann, A. Kiendler-Scharr, A. Wahner, A. Novelli
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 2003-2033 (2023)
Photochemical processes in ambient air were studied using the atmospheric simulation chamber SAPHIR at Forschungszentrum Jülich, Germany. Ambient air was continuously drawn into the chamber through a 50 m high inlet line and passed through the chamb
Externí odkaz:
https://doaj.org/article/e60adc2ad2594ef3990465d4cc8130d3
Autor:
Z. Tan, H. Fuchs, A. Hofzumahaus, W. J. Bloss, B. Bohn, C. Cho, T. Hohaus, F. Holland, C. Lakshmisha, L. Liu, P. S. Monks, A. Novelli, D. Niether, F. Rohrer, R. Tillmann, T. S. E. Valkenburg, V. Vardhan, A. Kiendler-Scharr, A. Wahner, R. Sommariva
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 13137-13152 (2022)
Ambient measurements of nitryl chloride (ClNO2) were performed at a rural site in Germany, covering three periods in winter, summer, and autumn 2019, as part of the JULIAC campaign (Jülich Atmospheric Chemistry Project) that aimed to understand the
Externí odkaz:
https://doaj.org/article/8055e684fcc7485aaaaacefbda26d83a
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:
L. Hantschke, A. Novelli, B. Bohn, C. Cho, D. Reimer, F. Rohrer, R. Tillmann, M. Glowania, A. Hofzumahaus, A. Kiendler-Scharr, A. Wahner, H. Fuchs
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 12665-12685 (2021)
The oxidation of Δ3-carene and one of its main oxidation products, caronaldehyde, by the OH radical and O3 was investigated in the atmospheric simulation chamber SAPHIR under atmospheric conditions for NOx mixing ratios below 2 ppbv. Within this stu
Externí odkaz:
https://doaj.org/article/45bcb4ffa166477b88f9dc6d591c156e
Autor:
M. Glowania, F. Rohrer, H.-P. Dorn, A. Hofzumahaus, F. Holland, A. Kiendler-Scharr, A. Wahner, H. Fuchs
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 4239-4253 (2021)
Three instruments that use different techniques to measure gaseous formaldehyde (HCHO) concentrations were compared in experiments in the atmospheric simulation chamber SAPHIR at Forschungszentrum Jülich. One instrument (AL4021, Aero-Laser GmbH) det
Externí odkaz:
https://doaj.org/article/b0c719bd678d4469b5ddea00f6aa325e
Autor:
C. Cho, A. Hofzumahaus, H. Fuchs, H.-P. Dorn, M. Glowania, F. Holland, F. Rohrer, V. Vardhan, A. Kiendler-Scharr, A. Wahner, A. Novelli
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 1851-1877 (2021)
Precise and accurate hydroxyl radical (OH) measurements are essential to investigate mechanisms for oxidation and transformation of trace gases and processes leading to the formation of secondary pollutants like ozone (O3) in the troposphere. Laser-i
Externí odkaz:
https://doaj.org/article/4a44d65fd5124ecd8402e43c409448c5
Autor:
M. Rolletter, M. Blocquet, M. Kaminski, B. Bohn, H.-P. Dorn, A. Hofzumahaus, F. Holland, X. Li, F. Rohrer, R. Tillmann, R. Wegener, A. Kiendler-Scharr, A. Wahner, H. Fuchs
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 13701-13719 (2020)
The 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 ( ppbv) with and without an added hydroxyl radical (OH) sca
Externí odkaz:
https://doaj.org/article/e581506e7a4341a6839588c4a10d335d
Autor:
A. Novelli, L. Vereecken, B. Bohn, H.-P. Dorn, G. I. Gkatzelis, A. Hofzumahaus, F. Holland, D. Reimer, F. Rohrer, S. Rosanka, D. Taraborrelli, R. Tillmann, R. Wegener, Z. Yu, A. Kiendler-Scharr, A. Wahner, H. Fuchs
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 3333-3355 (2020)
Theoretical, 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 important under atmospheric condit
Externí odkaz:
https://doaj.org/article/0454a644f2bb47aaa5e154a5b050d7d9
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