Zobrazeno 1 - 10
of 1 353
pro vyhledávání: '"A.-P. Hyvärinen"'
Autor:
S. Hakala, V. Vakkari, H. Lihavainen, A.-P. Hyvärinen, K. Neitola, J. Kontkanen, V.-M. Kerminen, M. Kulmala, T. Petäjä, T. Hussein, M. I. Khoder, M. A. Alghamdi, P. Paasonen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 9287-9321 (2023)
The majority of new particle formation (NPF) events observed in Hada Al Sham, western Saudi Arabia, during 2013–2015 showed an unusual progression where the diameter of a newly formed particle mode clearly started to decrease after the growth phase
Externí odkaz:
https://doaj.org/article/4456afff6e94430b90701b678d10e412
Autor:
F. M. Schnaiter, C. Linke, E. Asmi, H. Servomaa, A.-P. Hyvärinen, S. Ohata, Y. Kondo, E. Järvinen
Publikováno v:
Atmospheric Measurement Techniques, Vol 16, Pp 2753-2769 (2023)
In this paper, the Photoacoustic Aerosol Absorption Spectrometer (PAAS-4λ) is introduced. PAAS-4λ was specifically developed for long-term monitoring tasks in (unattended) air quality stations. It uses four wavelengths coupled to a single acoustic
Externí odkaz:
https://doaj.org/article/7399f90d6d3e4744b5464369678a0977
Autor:
T. Miinalainen, H. Kokkola, A. Lipponen, A.-P. Hyvärinen, V. K. Soni, K. E. J. Lehtinen, T. Kühn
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 3471-3491 (2023)
We studied the potential of using machine learning to downscale global-scale climate model output towards ground station data. The aim was to simultaneously analyze both city-level air quality and regional- and global-scale radiative forcing values f
Externí odkaz:
https://doaj.org/article/23b98a9aa74047caafb47a2e509835fd
Autor:
S. Sofieva, E. Asmi, N. S. Atanasova, A. E. Heikkinen, E. Vidal, J. Duplissy, M. Romantschuk, R. Kouznetsov, J. Kukkonen, D. H. Bamford, A.-P. Hyvärinen, M. Sofiev
Publikováno v:
Atmospheric Measurement Techniques, Vol 15, Pp 6201-6219 (2022)
A new bubble-generating glass chamber with an extensive set of aerosol production experiments is presented. Compared to the experiments described in the literature since the ground-setting works of Edward C. Monahan et al. in 198
Externí odkaz:
https://doaj.org/article/75a00b08c5764d878bc9c37fc958d46c
Autor:
M. Sebastian, S. K. Kompalli, V. A. Kumar, S. Jose, S. S. Babu, G. Pandithurai, S. Singh, R. K. Hooda, V. K. Soni, J. R. Pierce, V. Vakkari, E. Asmi, D. M. Westervelt, A.-P. Hyvärinen, V. P. Kanawade
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 4491-4508 (2022)
Atmospheric new particle formation (NPF) is a crucial process driving aerosol number concentrations in the atmosphere; it can significantly impact the evolution of atmospheric aerosol and cloud processes. This study analyses at least 1 year of asynch
Externí odkaz:
https://doaj.org/article/d4f0681efece4adca94b342fc7e3d6c8
Autor:
D. M. Kalbermatter, G. Močnik, L. Drinovec, B. Visser, J. Röhrbein, M. Oscity, E. Weingartner, A.-P. Hyvärinen, K. Vasilatou
Publikováno v:
Atmospheric Measurement Techniques, Vol 15, Pp 561-572 (2022)
We report on an inter-comparison of black-carbon- and aerosol-absorption-measuring instruments with laboratory-generated soot particles coated with controlled amounts of secondary organic matter (SOM). The aerosol generation setup consisted of a mini
Externí odkaz:
https://doaj.org/article/f08c66fec10d4493bb547427d9a423f9
Publikováno v:
Earth System Science Data, Vol 14, Pp 637-649 (2022)
Continuous, semi-long-term, ground-based in situ cloud measurements were conducted during eight Pallas Cloud Experiments (PaCEs) held in autumn between 2004 and 2019. Those campaigns were carried out in the Finnish sub-Arctic region at the Sammaltunt
Externí odkaz:
https://doaj.org/article/b1cc103fdb9c455fbec3f135be9bb999
Autor:
S. D. Seppälä, J. Kuula, A.-P. Hyvärinen, S. Saarikoski, T. Rönkkö, J. Keskinen, J.-P. Jalkanen, H. Timonen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 3215-3234 (2021)
Exhaust emissions from shipping are a major contributor to particle concentrations in coastal and marine areas. Previously, the marine fuel sulfur content (FSC) was restricted globally to 4.5 m/m%, but the limit was changed to 3.5 m/m% at the beginni
Externí odkaz:
https://doaj.org/article/67813c9a3d7c4b8a9c05c5550d08a3f3
Publikováno v:
Atmospheric Measurement Techniques, Vol 13, Pp 5129-5147 (2020)
Continuous, semi-long-term, ground-based in situ cloud measurements were conducted during the Pallas Cloud Experiment (PaCE) in 2013. The measurements were carried out in Finnish sub-Arctic region at Sammaltunturi station (67∘58′ N, 24∘07′
Externí odkaz:
https://doaj.org/article/2c15cc46c82e48b48b8bf8c660af1616
Autor:
S. Hakala, M. A. Alghamdi, P. Paasonen, V. Vakkari, M. I. Khoder, K. Neitola, L. Dada, A. S. Abdelmaksoud, H. Al-Jeelani, I. I. Shabbaj, F. M. Almehmadi, A.-M. Sundström, H. Lihavainen, V.-M. Kerminen, J. Kontkanen, M. Kulmala, T. Hussein, A.-P. Hyvärinen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 10537-10555 (2019)
Atmospheric aerosols have significant effects on human health and the climate. A large fraction of these aerosols originates from secondary new particle formation (NPF), where atmospheric vapors form small particles that subsequently grow into larger
Externí odkaz:
https://doaj.org/article/cd68fab8fabe4323bdde0fc78a560d89