Zobrazeno 1 - 10
of 438
pro vyhledávání: '"M Sipilä"'
Autor:
M. Boyer, D. Aliaga, L. L. J. Quéléver, S. Bucci, H. Angot, L. Dada, B. Heutte, L. Beck, M. Duetsch, A. Stohl, I. Beck, T. Laurila, N. Sarnela, R. C. Thakur, B. Miljevic, M. Kulmala, T. Petäjä, M. Sipilä, J. Schmale, T. Jokinen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 12595-12621 (2024)
In this study, we present and analyze the first continuous time series of relevant aerosol precursor vapors from the central Arctic (north of 80° N) during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expeditio
Externí odkaz:
https://doaj.org/article/90a42bba55354cc7ae7f43b9ff371419
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:
M. Okuljar, O. Garmash, M. Olin, J. Kalliokoski, H. Timonen, J. V. Niemi, P. Paasonen, J. Kontkanen, Y. Zhang, H. Hellén, H. Kuuluvainen, M. Aurela, H. E. Manninen, M. Sipilä, T. Rönkkö, T. Petäjä, M. Kulmala, M. Dal Maso, M. Ehn
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 12965-12983 (2023)
Condensable vapors, including highly oxygenated organic molecules (HOMs), govern secondary organic aerosol formation and thereby impact the quantity, composition, and properties (e.g., toxicity) of aerosol particles. These vapors are mainly formed in
Externí odkaz:
https://doaj.org/article/43b86298aad848948e60996a69fade7b
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:
M. Boyer, D. Aliaga, J. B. Pernov, H. Angot, L. L. J. Quéléver, L. Dada, B. Heutte, M. Dall'Osto, D. C. S. Beddows, Z. Brasseur, I. Beck, S. Bucci, M. Duetsch, A. Stohl, T. Laurila, E. Asmi, A. Massling, D. C. Thomas, J. K. Nøjgaard, T. Chan, S. Sharma, P. Tunved, R. Krejci, H. C. Hansson, F. Bianchi, K. Lehtipalo, A. Wiedensohler, K. Weinhold, M. Kulmala, T. Petäjä, M. Sipilä, J. Schmale, T. Jokinen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 389-415 (2023)
The Arctic environment is rapidly changing due to accelerated warming in the region. The warming trend is driving a decline in sea ice extent, which thereby enhances feedback loops in the surface energy budget in the Arctic. Arctic aerosols play an i
Externí odkaz:
https://doaj.org/article/792e28cf901f4e77932d77eceff41e00
Autor:
C. Xavier, M. Baykara, R. Wollesen de Jonge, B. Altstädter, P. Clusius, V. Vakkari, R. Thakur, L. Beck, S. Becagli, M. Severi, R. Traversi, R. Krejci, P. Tunved, M. Mazzola, B. Wehner, M. Sipilä, M. Kulmala, M. Boy, P. Roldin
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 10023-10043 (2022)
In this study, we modeled the aerosol particle formation along air mass trajectories arriving at the remote Arctic research stations Gruvebadet (67 m a.s.l.) and Zeppelin (474 m a.s.l.), Ny-Ålesund, during May 2018. The aim of this study was to impr
Externí odkaz:
https://doaj.org/article/cf48584521fc4ea09a5891812b0e9e02
Autor:
L. L. J. Quéléver, L. Dada, E. Asmi, J. Lampilahti, T. Chan, J. E. Ferrara, G. E. Copes, G. Pérez-Fogwill, L. Barreira, M. Aurela, D. R. Worsnop, T. Jokinen, M. Sipilä
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 8417-8437 (2022)
Understanding chemical processes leading to the formation of atmospheric aerosol particles is crucial to improve our capabilities in predicting the future climate. However, those mechanisms are still inadequately characterized, especially in polar re
Externí odkaz:
https://doaj.org/article/bf3a2f619a0d4fd486c706ef8dd1eccb
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:
M. Olin, M. Okuljar, M. P. Rissanen, J. Kalliokoski, J. Shen, L. Dada, M. Lampimäki, Y. Wu, A. Lohila, J. Duplissy, M. Sipilä, T. Petäjä, M. Kulmala, M. Dal Maso
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 8097-8115 (2022)
The occurrence of new particle formation (NPF) events detected in a coastal agricultural site, at Qvidja, in Southwestern Finland, was investigated using the data measured with a nitrate ion-based chemical-ionization atmospheric-pressure-interface ti
Externí odkaz:
https://doaj.org/article/f866545cccf84b2db1f7e30094105225
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