Zobrazeno 1 - 10
of 157
pro vyhledávání: '"T. Brauers"'
Publikováno v:
Atmospheric Measurement Techniques, Vol 15, Pp 945-964 (2022)
An instrument based on 20 m open-path incoherent broadband cavity-enhanced absorption spectroscopy (IBBCEAS) was established at the Jülich SAPHIR chamber in spring 2011. The setup was optimized for the detection of HONO and NO2 in the near-UV region
Externí odkaz:
https://doaj.org/article/e55eedd4542c406ea4df6526ef59482e
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
Modeling of HCHO and CHOCHO at a semi-rural site in southern China during the PRIDE-PRD2006 campaign
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 22, Pp 12291-12305 (2014)
HCHO and CHOCHO are important trace gases in the atmosphere, serving as tracers of VOC oxidations. In the past decade, high concentrations of HCHO and CHOCHO have been observed for the Pearl River Delta (PRD) region in southern China. In this study,
Externí odkaz:
https://doaj.org/article/ecc19e913abb4fbb8f0fb8e41ffdda25
Autor:
B. Bonn, E. Bourtsoukidis, T. S. Sun, H. Bingemer, L. Rondo, U. Javed, J. Li, R. Axinte, X. Li, T. Brauers, H. Sonderfeld, R. Koppmann, A. Sogachev, S. Jacobi, D. V. Spracklen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 19, Pp 10823-10843 (2014)
It has been claimed for more than a century that atmospheric new particle formation is primarily influenced by the presence of sulfuric acid. However, the activation process of sulfuric acid related clusters into detectable particles is still an unre
Externí odkaz:
https://doaj.org/article/b2b260e9607f4364a45f8fc87289897c
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:
K. D. Lu, F. Rohrer, F. Holland, H. Fuchs, T. Brauers, A. Oebel, R. Dlugi, M. Hu, X. Li, S. R. Lou, M. Shao, T. Zhu, A. Wahner, Y. H. Zhang, A. Hofzumahaus
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 10, Pp 4979-4999 (2014)
Nighttime HOx chemistry was investigated in two ground-based field campaigns (PRIDE-PRD2006 and CAREBEIJING2006) in summer 2006 in China by comparison of measured and modeled concentration data of OH and HO2. The measurement sites were located in a r
Externí odkaz:
https://doaj.org/article/ebc7f066fb444899a5539b541b7e1f29
Autor:
R. M. Varma, S. M. Ball, T. Brauers, H.-P. Dorn, U. Heitmann, R. L. Jones, U. Platt, D. Pöhler, A. A. Ruth, A. J. L. Shillings, J. Thieser, A. Wahner, D. S. Venables
Publikováno v:
Atmospheric Measurement Techniques, Vol 6, Iss 11, Pp 3115-3130 (2013)
Broadband optical cavity spectrometers are maturing as a technology for trace-gas detection, but only recently have they been used to retrieve the extinction coefficient of aerosols. Sensitive broadband extinction measurements allow explicit separati
Externí odkaz:
https://doaj.org/article/e79f32a2f8f04038a1e15cc10d0fa229
Autor:
H.-P. Dorn, R. L. Apodaca, S. M. Ball, T. Brauers, S. S. Brown, J. N. Crowley, W. P. Dubé, H. Fuchs, R. Häseler, U. Heitmann, R. L. Jones, A. Kiendler-Scharr, I. Labazan, J. M. Langridge, J. Meinen, T. F. Mentel, U. Platt, D. Pöhler, F. Rohrer, A. A. Ruth, E. Schlosser, G. Schuster, A. J. L. Shillings, W. R. Simpson, J. Thieser, R. Tillmann, R. Varma, D. S. Venables, A. Wahner
Publikováno v:
Atmospheric Measurement Techniques, Vol 6, Iss 5, Pp 1111-1140 (2013)
The detection of atmospheric NO3 radicals is still challenging owing to its low mixing ratios (≈ 1 to 300 pptv) in the troposphere. While long-path differential optical absorption spectroscopy (DOAS) has been a well-established NO3 detection approa
Externí odkaz:
https://doaj.org/article/1bf99a9cea834b5c93bdaed465843fa1
Publikováno v:
Atmospheric Chemistry and Physics, Vol 13, Iss 4, Pp 2133-2151 (2013)
We performed MAX-DOAS measurements during the PRIDE-PRD2006 campaign in the Pearl River Delta region (PRD), China, for 4 weeks in July 2006 at a site located 60 km north of Guangzhou. The vertical distributions of NO2, HCHO, and CHOCHO were independe
Externí odkaz:
https://doaj.org/article/9c8b6cbfac82415499b1384c9e9a7910
Autor:
A. Wahner, T. Zhu, L. M. Zeng, M. Shao, A. Oebel, S. R. Lou, Y. Kondo, X. Li, R. Häseler, K. Kita, M. Hu, H. Fuchs, B. Bohn, T. Brauers, A. Hofzumahaus, F. Holland, K. D. Lu, Y. H. Zhang, F. Rohrer
Publikováno v:
Atmospheric Chemistry and Physics, Vol 13, Iss 2, Pp 1057-1080 (2013)
Measurements of ambient OH and HO2 radicals were performed by laser induced fluorescence (LIF) during CAREBeijing2006 (Campaigns of Air Quality Research in Beijing and Surrounding Region 2006) at the suburban site Yufa in the south of Beijing in summ
Externí odkaz:
https://doaj.org/article/c7a80704af204f1b888db84678e3c8a3