Zobrazeno 1 - 10
of 263
pro vyhledávání: '"A. Ylisirniö"'
Autor:
S. M. Kommula, A. Buchholz, Y. Gramlich, T. Mielonen, L. Hao, I. Pullinen, L. Vettikkat, A. Ylisirniö, J. Joutsensaari, S. Schobesberger, P. Tiitta, A. Leskinen, D. Hesslin‐ Rees, S. L. Haslett, K. Siegel, C. Lunder, P. Zieger, R. Krejci, S. Romakkaniemi, C. Mohr, A. Virtanen
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 6, Pp n/a-n/a (2024)
Abstract Active vegetation fires in south‐eastern (SE) Europe resulted in a notable increase in the number concentration of aerosols and cloud condensation nuclei (CCN) particles at two high latitude locations—the SMEAR IV station in Kuopio, Finl
Externí odkaz:
https://doaj.org/article/3b4cc174207d42df884cb6a98af1e561
Autor:
Z. Li, A. Buchholz, L. M. F. Barreira, A. Ylisirniö, L. Hao, I. Pullinen, S. Schobesberger, A. Virtanen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 203-220 (2023)
Many recent secondary organic aerosol (SOA) studies mainly focus on biogenic SOA particles formed under low NOx conditions and thus are applicable to pristine environments with minor anthropogenic influence. Although interactions between biogenic vol
Externí odkaz:
https://doaj.org/article/1ac62039b3124dc9be2ff80242b679a4
Autor:
Z. Li, A. Buchholz, A. Ylisirniö, L. Barreira, L. Hao, S. Schobesberger, T. Yli-Juuti, A. Virtanen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 18283-18302 (2021)
Efforts have been spent on investigating the isothermal evaporation of α-pinene secondary organic aerosol (SOA) particles at ranges of conditions and decoupling the impacts of viscosity and volatility on evaporation. However, little is known about t
Externí odkaz:
https://doaj.org/article/9c716a08577446da93b8ac861da2509a
Autor:
L. M. F. Barreira, A. Ylisirniö, I. Pullinen, A. Buchholz, Z. Li, H. Lipp, H. Junninen, U. Hõrrak, S. M. Noe, A. Krasnova, D. Krasnov, K. Kask, E. Talts, Ü. Niinemets, J. Ruiz-Jimenez, S. Schobesberger
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 11781-11800 (2021)
Secondary organic aerosols (SOAs) formed from biogenic volatile organic compounds (BVOCs) constitute a significant fraction of atmospheric particulate matter and have been recognized to significantly affect the climate and air quality. Atmospheric SO
Externí odkaz:
https://doaj.org/article/f943007f41f149798e5b0472718903c0
Autor:
A. Ylisirniö, L. M. F. Barreira, I. Pullinen, A. Buchholz, J. Jayne, J. E. Krechmer, D. R. Worsnop, A. Virtanen, S. Schobesberger
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 355-367 (2021)
The Filter Inlet for Gases and AEROsols (FIGAERO) coupled with a time-of-flight chemical ionization mass spectrometer (ToF-CIMS) enables online measurements of both gas-phase and particle-phase chemical constituents of ambient aerosols. When properly
Externí odkaz:
https://doaj.org/article/c8eb7cb36fb048648f018daf55630eab
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 10441-10458 (2020)
The volatility distribution of the organic compounds present in secondary organic aerosol (SOA) at different conditions is a key quantity that has to be captured in order to describe SOA dynamics accurately. The development of the Filter Inlet for Ga
Externí odkaz:
https://doaj.org/article/29323d4a3f7a443aa1ca2134ece61415
Autor:
A. Buchholz, A. Ylisirniö, W. Huang, C. Mohr, M. Canagaratna, D. R. Worsnop, S. Schobesberger, A. Virtanen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 7693-7716 (2020)
The measurements of aerosol particles with a filter inlet for gases and aerosols (FIGAERO) together with a chemical ionisation mass spectrometer (CIMS) yield the overall chemical composition of the particle phase. In addition, the thermal desorption
Externí odkaz:
https://doaj.org/article/dc348e4d17a74524a3adcb810dae57a5
Autor:
A. Ylisirniö, A. Buchholz, C. Mohr, Z. Li, L. Barreira, A. Lambe, C. Faiola, E. Kari, T. Yli-Juuti, S. A. Nizkorodov, D. R. Worsnop, A. Virtanen, S. Schobesberger
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 5629-5644 (2020)
Secondary organic aerosol (SOA) is an important constituent of the atmosphere where SOA particles are formed chiefly by the condensation or reactive uptake of oxidation products of volatile organic compounds (VOCs). The mass yield in SOA particle for
Externí odkaz:
https://doaj.org/article/82c0e3900b4b4726b59b6543d76c43a8
Autor:
E. Kari, L. Hao, A. Ylisirniö, A. Buchholz, A. Leskinen, P. Yli-Pirilä, I. Nuutinen, K. Kuuspalo, J. Jokiniemi, C. L. Faiola, S. Schobesberger, A. Virtanen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 15651-15671 (2019)
The fraction of gasoline direct-injection (GDI) vehicles comprising the total vehicle pool is projected to increase in the future. However, thorough knowledge about the influence of GDI engines on important atmospheric chemistry processes is missing
Externí odkaz:
https://doaj.org/article/d44b39be5df7459ca023c88858034ebc
Autor:
M. Leiminger, S. Feil, P. Mutschlechner, A. Ylisirniö, D. Gunsch, L. Fischer, A. Jordan, S. Schobesberger, A. Hansel, G. Steiner
Publikováno v:
Atmospheric Measurement Techniques, Vol 12, Pp 5231-5246 (2019)
Here we present an alternative approach of an atmospheric pressure interface (APi) time-of-flight mass spectrometer for the study of atmospheric ions and cluster ions, the so-called ioniAPi-TOF. The novelty is the use of two hexapoles as ion guides w
Externí odkaz:
https://doaj.org/article/6352c498b8e2462793f343b305162b3c