Zobrazeno 1 - 10
of 380
pro vyhledávání: '"X C, He"'
Autor:
Y. Zhang, D. Li, X.-C. He, W. Nie, C. Deng, R. Cai, Y. Liu, Y. Guo, C. Liu, Y. Li, L. Chen, C. Hua, T. Liu, Z. Wang, J. Xie, L. Wang, T. Petäjä, F. Bianchi, X. Qi, X. Chi, P. Paasonen, C. Yan, J. Jiang, A. Ding, M. Kulmala
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 1873-1893 (2024)
New particle formation contributes significantly to the number concentration of ultrafine particles (UFPs, d ≤ 100 nm) and has a great impact on human health and global climate. Iodine oxoacids (HIOx, including iodic acid, HIO3, and iodous acid, HI
Externí odkaz:
https://doaj.org/article/ab843652b2d54a518cf0b0324134bf24
Autor:
X.-C. He, J. Shen, S. Iyer, P. Juuti, J. Zhang, M. Koirala, M. M. Kytökari, D. R. Worsnop, M. Rissanen, M. Kulmala, N. M. Maier, J. Mikkilä, M. Sipilä, J. Kangasluoma
Publikováno v:
Atmospheric Measurement Techniques, Vol 16, Pp 4461-4487 (2023)
The multi-scheme chemical ionisation inlet 1 (MION1) enables rapid switching between the measurement of atmospheric ions without chemical ionisation and neutral molecules using various atmospheric pressure chemical ionisation methods. In this study,
Externí odkaz:
https://doaj.org/article/9c00a27cd1f44278a27c0fd28397137b
Autor:
J. Pfeifer, N. G. A. Mahfouz, B. C. Schulze, S. Mathot, D. Stolzenburg, R. Baalbaki, Z. Brasseur, L. Caudillo, L. Dada, M. Granzin, X.-C. He, H. Lamkaddam, B. Lopez, V. Makhmutov, R. Marten, B. Mentler, T. Müller, A. Onnela, M. Philippov, A. A. Piedehierro, B. Rörup, M. Schervish, P. Tian, N. S. Umo, D. S. Wang, M. Wang, S. K. Weber, A. Welti, Y. Wu, M. Zauner-Wieczorek, A. Amorim, I. El Haddad, M. Kulmala, K. Lehtipalo, T. Petäjä, A. Tomé, S. Mirme, H. E. Manninen, N. M. Donahue, R. C. Flagan, A. Kürten, J. Curtius, J. Kirkby
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 6703-6718 (2023)
Aerosol particles have an important role in Earth's radiation balance and climate, both directly and indirectly through aerosol–cloud interactions. Most aerosol particles in the atmosphere are weakly charged, affecting both their collision rates wi
Externí odkaz:
https://doaj.org/article/3da9fd914931429db872ebd380de13bb
Autor:
L. Caudillo, M. Surdu, B. Lopez, M. Wang, M. Thoma, S. Bräkling, A. Buchholz, M. Simon, A. C. Wagner, T. Müller, M. Granzin, M. Heinritzi, A. Amorim, D. M. Bell, Z. Brasseur, L. Dada, J. Duplissy, H. Finkenzeller, X.-C. He, H. Lamkaddam, N. G. A. Mahfouz, V. Makhmutov, H. E. Manninen, G. Marie, R. Marten, R. L. Mauldin, B. Mentler, A. Onnela, T. Petäjä, J. Pfeifer, M. Philippov, A. A. Piedehierro, B. Rörup, W. Scholz, J. Shen, D. Stolzenburg, C. Tauber, P. Tian, A. Tomé, N. S. Umo, D. S. Wang, Y. Wang, S. K. Weber, A. Welti, M. Zauner-Wieczorek, U. Baltensperger, R. C. Flagan, A. Hansel, J. Kirkby, M. Kulmala, K. Lehtipalo, D. R. Worsnop, I. E. Haddad, N. M. Donahue, A. L. Vogel, A. Kürten, J. Curtius
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 6613-6631 (2023)
Currently, the complete chemical characterization of nanoparticles (< 100 nm) represents an analytical challenge, since these particles are abundant in number but have negligible mass. Several methods for particle-phase characterization have been rec
Externí odkaz:
https://doaj.org/article/1e9ea0019e5c41b08717585c9c9d7c81
Autor:
C. Yan, Y. Shen, D. Stolzenburg, L. Dada, X. Qi, S. Hakala, A.-M. Sundström, Y. Guo, A. Lipponen, T. V. Kokkonen, J. Kontkanen, R. Cai, J. Cai, T. Chan, L. Chen, B. Chu, C. Deng, W. Du, X. Fan, X.-C. He, J. Kangasluoma, J. Kujansuu, M. Kurppa, C. Li, Y. Li, Z. Lin, Y. Liu, Y. Lu, W. Nie, J. Pulliainen, X. Qiao, Y. Wang, Y. Wen, Y. Wu, G. Yang, L. Yao, R. Yin, G. Zhang, S. Zhang, F. Zheng, Y. Zhou, A. Arola, J. Tamminen, P. Paasonen, Y. Sun, L. Wang, N. M. Donahue, F. Bianchi, K. R. Daellenbach, D. R. Worsnop, V.-M. Kerminen, T. Petäjä, A. Ding, J. Jiang, M. Kulmala
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 12207-12220 (2022)
During the COVID-19 lockdown, the dramatic reduction of anthropogenic emissions provided a unique opportunity to investigate the effects of reduced anthropogenic activity and primary emissions on atmospheric chemical processes and the consequent form
Externí odkaz:
https://doaj.org/article/e2efd964ae7d498395e5364e024f0b54
Autor:
L. J. Beck, S. Schobesberger, H. Junninen, J. Lampilahti, A. Manninen, L. Dada, K. Leino, X.-C. He, I. Pullinen, L. L. J. Quéléver, A. Franck, P. Poutanen, D. Wimmer, F. Korhonen, M. Sipilä, M. Ehn, D. R. Worsnop, V.-M. Kerminen, T. Petäjä, M. Kulmala, J. Duplissy
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 8547-8577 (2022)
At SMEAR II research station in Hyytiälä, located in the Finnish boreal forest, the process of new particle formation and the role of ions has been investigated for almost 20 years near the ground and at canopy level. However, above SMEAR II, the v
Externí odkaz:
https://doaj.org/article/acac5ebed41f4ac2aca233b476c32792
Autor:
R. C. Thakur, L. Dada, L. J. Beck, L. L. J. Quéléver, T. Chan, M. Marbouti, X.-C. He, C. Xavier, J. Sulo, J. Lampilahti, M. Lampimäki, Y. J. Tham, N. Sarnela, K. Lehtipalo, A. Norkko, M. Kulmala, M. Sipilä, T. Jokinen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 6365-6391 (2022)
Several studies have investigated new particle formation (NPF) events from various sites ranging from pristine locations, including forest sites, to urban areas. However, there is still a dearth of studies investigating NPF processes and subsequent a
Externí odkaz:
https://doaj.org/article/c4516680b0864ef487da9789f29fcded
Autor:
L. Caudillo, B. Rörup, M. Heinritzi, G. Marie, M. Simon, A. C. Wagner, T. Müller, M. Granzin, A. Amorim, F. Ataei, R. Baalbaki, B. Bertozzi, Z. Brasseur, R. Chiu, B. Chu, L. Dada, J. Duplissy, H. Finkenzeller, L. Gonzalez Carracedo, X.-C. He, V. Hofbauer, W. Kong, H. Lamkaddam, C. P. Lee, B. Lopez, N. G. A. Mahfouz, V. Makhmutov, H. E. Manninen, R. Marten, D. Massabò, R. L. Mauldin, B. Mentler, U. Molteni, A. Onnela, J. Pfeifer, M. Philippov, A. A. Piedehierro, M. Schervish, W. Scholz, B. Schulze, J. Shen, D. Stolzenburg, Y. Stozhkov, M. Surdu, C. Tauber, Y. J. Tham, P. Tian, A. Tomé, S. Vogt, M. Wang, D. S. Wang, S. K. Weber, A. Welti, W. Yonghong, W. Yusheng, M. Zauner-Wieczorek, U. Baltensperger, I. El Haddad, R. C. Flagan, A. Hansel, K. Höhler, J. Kirkby, M. Kulmala, K. Lehtipalo, O. Möhler, H. Saathoff, R. Volkamer, P. M. Winkler, N. M. Donahue, A. Kürten, J. Curtius
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 17099-17114 (2021)
Biogenic organic precursors play an important role in atmospheric new particle formation (NPF). One of the major precursor species is α-pinene, which upon oxidation can form a suite of products covering a wide range of volatilities. Highly oxygenate
Externí odkaz:
https://doaj.org/article/49e181487bc54896a3f154f556547c1d
Autor:
M. Xiao, C. R. Hoyle, L. Dada, D. Stolzenburg, A. Kürten, M. Wang, H. Lamkaddam, O. Garmash, B. Mentler, U. Molteni, A. Baccarini, M. Simon, X.-C. He, K. Lehtipalo, L. R. Ahonen, R. Baalbaki, P. S. Bauer, L. Beck, D. Bell, F. Bianchi, S. Brilke, D. Chen, R. Chiu, A. Dias, J. Duplissy, H. Finkenzeller, H. Gordon, V. Hofbauer, C. Kim, T. K. Koenig, J. Lampilahti, C. P. Lee, Z. Li, H. Mai, V. Makhmutov, H. E. Manninen, R. Marten, S. Mathot, R. L. Mauldin, W. Nie, A. Onnela, E. Partoll, T. Petäjä, J. Pfeifer, V. Pospisilova, L. L. J. Quéléver, M. Rissanen, S. Schobesberger, S. Schuchmann, Y. Stozhkov, C. Tauber, Y. J. Tham, A. Tomé, M. Vazquez-Pufleau, A. C. Wagner, R. Wagner, Y. Wang, L. Weitz, D. Wimmer, Y. Wu, C. Yan, P. Ye, Q. Ye, Q. Zha, X. Zhou, A. Amorim, K. Carslaw, J. Curtius, A. Hansel, R. Volkamer, P. M. Winkler, R. C. Flagan, M. Kulmala, D. R. Worsnop, J. Kirkby, N. M. Donahue, U. Baltensperger, I. El Haddad, J. Dommen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 14275-14291 (2021)
New particle formation (NPF) is a significant source of atmospheric particles, affecting climate and air quality. Understanding the mechanisms involved in urban aerosols is important to develop effective mitigation strategies. However, NPF rates repo
Externí odkaz:
https://doaj.org/article/6aac995a628d449aa6612bfaf88c7f06
Measurement of iodine species and sulfuric acid using bromide chemical ionization mass spectrometers
Autor:
M. Wang, X.-C. He, H. Finkenzeller, S. Iyer, D. Chen, J. Shen, M. Simon, V. Hofbauer, J. Kirkby, J. Curtius, N. Maier, T. Kurtén, D. R. Worsnop, M. Kulmala, M. Rissanen, R. Volkamer, Y. J. Tham, N. M. Donahue, M. Sipilä
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 4187-4202 (2021)
Iodine species are important in the marine atmosphere for oxidation and new-particle formation. Understanding iodine chemistry and iodine new-particle formation requires high time resolution, high sensitivity, and simultaneous measurements of many io
Externí odkaz:
https://doaj.org/article/fe3829d503ae4a989b41d7add6953fa4