Search Results - "Kontkanen, J"

New particle formation in the free troposphere: A question of chemistry and timing by Bianchi, F., Tröstl, J., Junninen, H., Frege, C., Henne, S., Hoyle, C. R., Molteni, U., Herrmann, E., Adamov, A., Bukowiecki, N., Chen, X., Duplissy, J., Gysel, M., Hutterli, M., Kangasluoma, J., Kontkanen, J., Kürten, A., Manninen, H. E., Münch, S., Peräkylä, O., Petäjä, T., Rondo, L., Williamson, C., Weingartner, E., Curtius, J., Worsnop, D. R., Kulmala, M., Dommen, J., Baltensperger, U.

“…New particle formation (NPF) is the source of over half of the atmosphere's cloud condensation nuclei, thus influencing cloud properties and Earth's energy…”
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Ion-induced sulfuric acid-ammonia nucleation drives particle formation in coastal Antarctica by Jokinen, T, Sipilä, M, Kontkanen, J, Vakkari, V, Tisler, P, Duplissy, E-M, Junninen, H, Kangasluoma, J, Manninen, H E, Petäjä, T, Kulmala, M, Worsnop, D R, Kirkby, J, Virkkula, A, Kerminen, V-M

“…Formation of new aerosol particles from trace gases is a major source of cloud condensation nuclei (CCN) in the global atmosphere, with potentially large…”
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Biogenic particles formed in the Himalaya as an important source of free tropospheric aerosols by Bianchi, F., Junninen, H., Bigi, A., Sinclair, V. A., Dada, L., Hoyle, C. R., Zha, Q., Yao, L., Ahonen, L. R., Bonasoni, P., Buenrostro Mazon, S., Hutterli, M., Laj, P., Lehtipalo, K., Kangasluoma, J., Kerminen, V.-M., Kontkanen, J., Marinoni, A., Mirme, S., Molteni, U., Petäjä, T., Riva, M., Rose, C., Sellegri, K., Yan, C., Worsnop, D. R., Kulmala, M., Baltensperger, U., Dommen, J.

“…Aerosols of biogenic and anthropogenic origin affect the total radiative forcing of global climate. Poor knowledge of the pre-industrial aerosol concentration…”
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Major contribution of neutral clusters to new particle formation at the interface between the boundary layer and the free troposphere by Rose, C, Sellegri, K, Asmi, E, Hervo, M, Freney, E, Colomb, A, Junninen, H, Duplissy, J, Sipilä, M, Kontkanen, J, Lehtipalo, K, Kulmala, M

“…The formation of new aerosol particles in the atmosphere is a key process influencing the aerosol number concentration as well as the climate, in particular at…”
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Estimating the contribution of ion–ion recombination to sub-2 nm cluster concentrations from atmospheric measurements by Kontkanen, J, Lehtinen, K. E. J, Nieminen, T, Manninen, H. E, Lehtipalo, K, Kerminen, V.-M, Kulmala, M

“…The significance of ion–ion recombination for atmospheric new particle formation is not well quantified. Here we present and evaluate a method for determining…”
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On the sources of uncertainty in the sub-3 nm particle concentration measurement by Kangasluoma, J., Kontkanen, J.

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On the sources of uncertainty in the sub-3nm particle concentration measurement by Kangasluoma, J., Kontkanen, J.

“…The number of experiments characterizing sub-3nm aerosol particle dynamics has increased significantly over the recent years. In these experiments, it is…”
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Exploring the potential of nano-Köhler theory to describe the growth of atmospheric molecular clusters by organic vapors using cluster kinetics simulations by Kontkanen, Jenni, Olenius, Tinja, Kulmala, Markku, Riipinen, Ilona

“…Atmospheric new particle formation (NPF) occurs by the formation of nanometer-sized molecular clusters and their subsequent growth to larger particles. NPF…”
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Sulfuric acid–amine nucleation in urban Beijing by Cai, Runlong, Yan, Chao, Yang, Dongsen, Yin, Rujing, Lu, Yiqun, Deng, Chenjuan, Fu, Yueyun, Ruan, Jiaxin, Li, Xiaoxiao, Kontkanen, Jenni, Zhang, Qiang, Kangasluoma, Juha, Ma, Yan, Hao, Jiming, Worsnop, Douglas R, Bianchi, Federico, Paasonen, Pauli, Kerminen, Veli-Matti, Liu, Yongchun, Wang, Lin, Zheng, Jun, Kulmala, Markku, Jiang, Jingkun

“…New particle formation (NPF) is one of the major sources of atmospheric ultrafine particles. Due to the high aerosol and trace gas concentrations, the…”
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Survival probabilities of atmospheric particles: comparison based on theory, cluster population simulations, and observations in Beijing by Tuovinen, Santeri, Cai, Runlong, Kerminen, Veli-Matti, Jiang, Jingkun, Yan, Chao, Kulmala, Markku, Kontkanen, Jenni

“…Atmospheric new particle formation (NPF) events are regularly observed in urban Beijing, despite high concentrations of background particles which, based on…”
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Long-term analysis of clear-sky new particle formation events and nonevents in Hyytiälä by Dada, Lubna, Paasonen, Pauli, Nieminen, Tuomo, Buenrostro Mazon, Stephany, Kontkanen, Jenni, Peräkylä, Otso, Lehtipalo, Katrianne, Hussein, Tareq, Petäjä, Tuukka, Kerminen, Veli-Matti, Bäck, Jaana, Kulmala, Markku

“…New particle formation (NPF) events have been observed all around the world and are known to be a major source of atmospheric aerosol particles. Here we…”
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Comprehensive analysis of particle growth rates from nucleation mode to cloud condensation nuclei in boreal forest by Paasonen, Pauli, Peltola, Maija, Kontkanen, Jenni, Junninen, Heikki, Kerminen, Veli-Matti, Kulmala, Markku

“…Growth of aerosol particles to sizes at which they can act as cloud condensation nuclei (CCN) is a crucial factor in estimating the current and future impacts…”
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Long-term measurement of sub-3 nm particles and their precursor gases in the boreal forest by Sulo, Juha, Sarnela, Nina, Kontkanen, Jenni, Ahonen, Lauri, Paasonen, Pauli, Laurila, Tiia, Jokinen, Tuija, Kangasluoma, Juha, Junninen, Heikki, Sipilä, Mikko, Petäjä, Tuukka, Kulmala, Markku, Lehtipalo, Katrianne

“…The knowledge of the dynamics of sub-3 nm particles in the atmosphere is crucial for our understanding of the first steps of atmospheric new particle…”
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Size-resolved particle number emissions in Beijing determined from measured particle size distributions by Kontkanen, Jenni, Deng, Chenjuan, Fu, Yueyun, Dada, Lubna, Zhou, Ying, Cai, Jing, Daellenbach, Kaspar R, Hakala, Simo, Kokkonen, Tom V, Lin, Zhuohui, Liu, Yongchun, Wang, Yonghong, Yan, Chao, Petäjä, Tuukka, Jiang, Jingkun, Kulmala, Markku, Paasonen, Pauli

“…The climate and air quality effects of aerosol particles depend on the number and size of the particles. In urban environments, a large fraction of aerosol…”
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Sources and sinks driving sulfuric acid concentrations in contrasting environments: implications on proxy calculations by Dada, Lubna, Ylivinkka, Ilona, Baalbaki, Rima, Li, Chang, Guo, Yishuo, Yan, Chao, Yao, Lei, Sarnela, Nina, Jokinen, Tuija, Daellenbach, Kaspar R, Yin, Rujing, Deng, Chenjuan, Chu, Biwu, Nieminen, Tuomo, Wang, Yonghong, Lin, Zhuohui, Thakur, Roseline C, Kontkanen, Jenni, Stolzenburg, Dominik, Sipilä, Mikko, Hussein, Tareq, Paasonen, Pauli, Bianchi, Federico, Salma, Imre, Weidinger, Tamás, Pikridas, Michael, Sciare, Jean, Jiang, Jingkun, Liu, Yongchun, Petäjä, Tuukka, Kerminen, Veli-Matti, Kulmala, Markku

“…Sulfuric acid has been shown to be a key driver for new particle formation and subsequent growth in various environments, mainly due to its low volatility…”
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Measurement report: New particle formation characteristics at an urban and a mountain station in northern China by Zhou, Ying, Hakala, Simo, Yan, Chao, Gao, Yang, Yao, Xiaohong, Chu, Biwu, Chan, Tommy, Kangasluoma, Juha, Gani, Shahzad, Kontkanen, Jenni, Paasonen, Pauli, Liu, Yongchun, Petäjä, Tuukka, Kulmala, Markku, Dada, Lubna

“…Atmospheric new particle formation (NPF) events have attracted increasing attention for their contribution to the global aerosol number budget and therefore…”
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Measurement report: Increasing trend of atmospheric ion concentrations in the boreal forest by Sulo, Juha, Lampilahti, Janne, Chen, Xuemeng, Kontkanen, Jenni, Nieminen, Tuomo, Kerminen, Veli-Matti, Petäjä, Tuukka, Kulmala, Markku, Lehtipalo, Katrianne

“…The concentration of atmospheric ions affects the total aerosol particle number concentrations in the atmosphere as well as atmospheric new particle formation…”
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Influence of anthropogenic emissions on the composition of highly oxygenatedorganic molecules in Helsinki: a street canyon and urban background stationcomparison by Okuljar, M., Garmash, O., Olin, M., Kalliokoski, J., Timonen, H., Niemi, J., Paasonen, P., Kontkanen, J., Zhang, Y., Hellen, H., Kuuluvainen, H., Aurela, M., Manninen, H., Sipila, M., Ronkko, T., Petaja, T., Kulmala, M., Dal Maso, M., Ehn, M.

“…liste mot clefs…”
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Explaining apparent particle shrinkage related to new particle formation events in western Saudi Arabia does not require evaporation by Hakala, Simo, Vakkari, Ville, Lihavainen, Heikki, Hyvärinen, Antti-Pekka, Neitola, Kimmo, Kontkanen, Jenni, Kerminen, Veli-Matti, Kulmala, Markku, Petäjä, Tuukka, Hussein, Tareq, Khoder, Mamdouh I, Alghamdi, Mansour A, Paasonen, Pauli

“…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…”
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Amines in boreal forest air at SMEAR II station in Finland by Hemmilä, Marja, Hellén, Heidi, Virkkula, Aki, Makkonen, Ulla, Praplan, Arnaud P, Kontkanen, Jenni, Ahonen, Lauri, Kulmala, Markku, Hakola, Hannele

“…We measured amines in boreal forest air in Finland both in gas and particle phases with 1 h time resolution using an online ion chromatograph (instrument for…”
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