Zobrazeno 1 - 10
of 328
pro vyhledávání: '"M. Rissanen"'
Autor:
H. Finkenzeller, J. Mikkilä, C. Righi, P. Juuti, M. Sipilä, M. Rissanen, D. Worsnop, A. Shcherbinin, N. Sarnela, J. Kangasluoma
Publikováno v:
Atmospheric Measurement Techniques, Vol 17, Pp 5989-6001 (2024)
Chemical ionisation inlets are fundamental instrument components in chemical ionisation mass spectrometry (CIMS). However, the sample gas and reagent ion trajectories are often understood only in a general and qualitative manner. Here, we evaluate tw
Externí odkaz:
https://doaj.org/article/e55abc21747443eb92fd9358cfffa877
Autor:
A. Rowell, J. Brean, D. C. S. Beddows, Z. Shi, A. Kumar, M. Rissanen, M. Dal Maso, P. Mettke, K. Weinhold, M. Merkel, R. M. Harrison
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 10349-10361 (2024)
Air ions are electrically charged particles in air. They are ubiquitous in the natural environment and affect the Earth's radiation budget by accelerating the formation and growth of new aerosol particles. Despite this, few datasets exist exploring t
Externí odkaz:
https://doaj.org/article/5e6eb56082e644cd90cee044f3f49e58
Autor:
S. Alage, V. Michoud, S. Harb, B. Picquet-Varrault, M. Cirtog, A. Kumar, M. Rissanen, C. Cantrell
Publikováno v:
Atmospheric Measurement Techniques, Vol 17, Pp 4709-4724 (2024)
Volatile organic compounds (VOCs) play a key role in tropospheric chemistry, giving rise to secondary products such as highly oxygenated organic molecules (HOMs) and secondary organic aerosols (SOAs). HOMs, a group of low-volatil
Externí odkaz:
https://doaj.org/article/1071a401b2974edab8ae63c0627ccc61
Autor:
R. Salignat, M. Rissanen, S. Iyer, J.-L. Baray, P. Tulet, J.-M. Metzger, J. Brioude, K. Sellegri, C. Rose
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 3785-3812 (2024)
New particle formation (NPF) in the free troposphere (FT) is thought to be a significant source of particles over the oceans. The entrainment of particles initially formed in the marine FT is further suspected to be a major contributor to cloud conde
Externí odkaz:
https://doaj.org/article/9e290127d312471f87bc4a2f92b79da5
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
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 10517-10532 (2023)
Aldehydes are common constituents of natural and polluted atmospheres, and their gas-phase oxidation has recently been reported to yield highly oxygenated organic molecules (HOMs) that are key players in the formation of atmospheric aerosol. However,
Externí odkaz:
https://doaj.org/article/4abd0f4df3ad449eb019dcf6e09d533b
Autor:
M. Meder, O. Peräkylä, J. G. Varelas, J. Luo, R. Cai, Y. Zhang, T. Kurtén, M. Riva, M. Rissanen, F. M. Geiger, R. J. Thomson, M. Ehn
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 4373-4390 (2023)
Highly oxygenated organic molecules (HOMs) from α-pinene ozonolysis have been shown to be significant contributors to secondary organic aerosol (SOA), yet our mechanistic understanding of how the peroxy-radical-driven autoxidation leads to their for
Externí odkaz:
https://doaj.org/article/99b52bdb339747258113ea3cd97cea79
Autor:
D. A. Amaladhasan, C. Heyn, C. R. Hoyle, I. El Haddad, M. Elser, S. M. Pieber, J. G. Slowik, A. Amorim, J. Duplissy, S. Ehrhart, V. Makhmutov, U. Molteni, M. Rissanen, Y. Stozhkov, R. Wagner, A. Hansel, J. Kirkby, N. M. Donahue, R. Volkamer, U. Baltensperger, M. Gysel-Beer, A. Zuend
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 215-244 (2022)
This study presents a characterization of the hygroscopic growth behaviour and effects of different inorganic seed particles on the formation of secondary organic aerosols (SOAs) from the dark ozone-initiated oxidation of isoprene at low NOx conditio
Externí odkaz:
https://doaj.org/article/3ef2169111294332bfdd61d1afc701f3
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