Zobrazeno 1 - 10
of 287
pro vyhledávání: '"H Timonen"'
Autor:
S. D. Harni, M. Aurela, S. Saarikoski, J. V. Niemi, H. Portin, H. Manninen, V. Leinonen, P. Aalto, P. K. Hopke, T. Petäjä, T. Rönkkö, H. Timonen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 12143-12160 (2024)
Particle size is one of the key factors influencing how aerosol particles affect their climate and health effects. Therefore, a better understanding of particle size distributions from various sources is crucial. In urban environments, aerosols are p
Externí odkaz:
https://doaj.org/article/740da5d5a275453391cf92dbaebb9640
Autor:
T. Lepistö, H. Lintusaari, L. Salo, V. Silvonen, L. M. F. Barreira, J. Hoivala, L. Markkula, J. V. Niemi, J. Ondracek, K. Teinilä, H. E. Manninen, S. Saarikoski, H. Timonen, M. Dal Maso, T. Rönkkö
Publikováno v:
Aerosol Research, Vol 2, Pp 271-289 (2024)
It has become evident that additional metrics along the particle mass concentration, together with dense air quality monitoring networks within cities, are needed to understand the most efficient ways to tackle the health burden of particulate pollut
Externí odkaz:
https://doaj.org/article/a13137e421334f518082b65a7152ea2e
Autor:
J. Zhao, V. Mickwitz, Y. Luo, E. Häkkinen, F. Graeffe, J. Zhang, H. Timonen, M. Canagaratna, J. E. Krechmer, Q. Zhang, M. Kulmala, J. Kangasluoma, D. Worsnop, M. Ehn
Publikováno v:
Atmospheric Measurement Techniques, Vol 17, Pp 1527-1543 (2024)
Particulate matter has major climate and health impacts, and it is therefore of utmost importance to be able to measure the composition of these particles to gain insights into their sources and characteristics. Many methods, both offline and online,
Externí odkaz:
https://doaj.org/article/a9106fc953854777af6bd9743e20ddff
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:
J. Elm, A. Czitrovszky, A. Held, A. Virtanen, A. Kiendler-Scharr, B. J. Murray, D. McCluskey, D. Contini, D. Broday, E. Goudeli, H. Timonen, J. Rosell-Llompart, J. L. Castillo, E. Diapouli, M. Viana, M. E. Messing, M. Kulmala, N. Zíková, S. H. Schmitt
Publikováno v:
Aerosol Research, Vol 1, Pp 13-16 (2023)
Externí odkaz:
https://doaj.org/article/5cc6547d28454a619ac8970bb3113a7e
Autor:
E. Häkkinen, J. Zhao, F. Graeffe, N. Fauré, J. E. Krechmer, D. Worsnop, H. Timonen, M. Ehn, J. Kangasluoma
Publikováno v:
Atmospheric Measurement Techniques, Vol 16, Pp 1705-1721 (2023)
Highly oxygenated compounds are important contributors to the formation and growth of atmospheric organic aerosol and thus have an impact on Earth’s radiation balance and global climate. However, knowledge of the contribution of highly oxygenated c
Externí odkaz:
https://doaj.org/article/7bcab4fe32a24c4ca04f1b708dd919f6
Autor:
S. Saarikoski, H. Hellén, A. P. Praplan, S. Schallhart, P. Clusius, J. V. Niemi, A. Kousa, T. Tykkä, R. Kouznetsov, M. Aurela, L. Salo, T. Rönkkö, L. M. F. Barreira, L. Pirjola, H. Timonen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 2963-2982 (2023)
Urban air consists of a complex mixture of gaseous and particulate species from anthropogenic and biogenic sources that are further processed in the atmosphere. This study investigated the characteristics and sources of volatile organic compounds (VO
Externí odkaz:
https://doaj.org/article/c7d59f3d19694aea90498123dcea9821
Autor:
J. Kuula, H. Timonen, J. V. Niemi, H. E. Manninen, T. Rönkkö, T. Hussein, P. L. Fung, S. Tarkoma, M. Laakso, E. Saukko, A. Ovaska, M. Kulmala, A. Karppinen, L. Johansson, T. Petäjä
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 4801-4808 (2022)
As evidence of adverse health effects due to air pollution continues to increase, the World Health Organization (WHO) recently published its latest edition of the global air quality guidelines (World Health Organization, 2021). Although not legally b
Externí odkaz:
https://doaj.org/article/b553c75735bc482f9d6577101aa7baa9
Autor:
P. L. Fung, M. A. Zaidan, J. V. Niemi, E. Saukko, H. Timonen, A. Kousa, J. Kuula, T. Rönkkö, A. Karppinen, S. Tarkoma, M. Kulmala, T. Petäjä, T. Hussein
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 1861-1882 (2022)
Lung-deposited surface area (LDSA) has been considered to be a better metric to explain nanoparticle toxicity instead of the commonly used particulate mass concentration. LDSA concentrations can be obtained either by direct measurements or by calcula
Externí odkaz:
https://doaj.org/article/b31924245e2041ad84026bc847184bb5
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 14851-14869 (2021)
This study investigated the sources of black carbon (BC) at two contrasting urban environments in Helsinki, Finland: residential area and street canyon. The measurement campaign in the residential area was conducted in winter–spring 2019, whereas i
Externí odkaz:
https://doaj.org/article/18906cee9a584bb69316d02fc09a812f