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1. The gas-phase formation mechanism of iodic acid as an atmospheric aerosol source

Author

Finkenzeller, Henning, Iyer, Siddharth, He, Xu-Cheng, Simon, Mario, Koenig, Theodore K., Lee, Christopher F., Valiev, Rashid, Hofbauer, Victoria, Amorim, Antonio, Baalbaki, Rima, Baccarini, Andrea, Beck, Lisa, Bell, David M., Caudillo, Lucía, Chen, Dexian, Chiu, Randall, Chu, Biwu, Dada, Lubna, Duplissy, Jonathan, Heinritzi, Martin, Kemppainen, Deniz, Kim, Changhyuk, Krechmer, Jordan, Kürten, Andreas, Kvashnin, Alexandr, Lamkaddam, Houssni, Lee, Chuan Ping, Lehtipalo, Katrianne, Li, Zijun, Makhmutov, Vladimir, Manninen, Hanna E., Marie, Guillaume, Marten, Ruby, Mauldin, Roy L., Mentler, Bernhard, Müller, Tatjana, Petäjä, Tuukka, Philippov, Maxim, Ranjithkumar, Ananth, Rörup, Birte, Shen, Jiali, Stolzenburg, Dominik, Tauber, Christian, Tham, Yee Jun, Tomé, António, Vazquez-Pufleau, Miguel, Wagner, Andrea C., Wang, Dongyu S., Wang, Mingyi, Wang, Yonghong, Weber, Stefan K., Nie, Wei, Wu, Yusheng, Xiao, Mao, Ye, Qing, Zauner-Wieczorek, Marcel, Hansel, Armin, Baltensperger, Urs, Brioude, Jérome, Curtius, Joachim, Donahue, Neil M., Haddad, Imad El, Flagan, Richard C., Kulmala, Markku, Kirkby, Jasper, Sipilä, Mikko, Worsnop, Douglas R., Kurten, Theo, Rissanen, Matti, and Volkamer, Rainer

Published
2023
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2. Synergistic HNO3–H2SO4–NH3 upper tropospheric particle formation

Author

Wang, Mingyi, Xiao, Mao, Bertozzi, Barbara, Marie, Guillaume, Rörup, Birte, Schulze, Benjamin, Bardakov, Roman, He, Xu-Cheng, Shen, Jiali, Scholz, Wiebke, Marten, Ruby, Dada, Lubna, Baalbaki, Rima, Lopez, Brandon, Lamkaddam, Houssni, Manninen, Hanna E., Amorim, António, Ataei, Farnoush, Bogert, Pia, Brasseur, Zoé, Caudillo, Lucía, De Menezes, Louis-Philippe, Duplissy, Jonathan, Ekman, Annica M. L., Finkenzeller, Henning, Carracedo, Loïc Gonzalez, Granzin, Manuel, Guida, Roberto, Heinritzi, Martin, Hofbauer, Victoria, Höhler, Kristina, Korhonen, Kimmo, Krechmer, Jordan E., Kürten, Andreas, Lehtipalo, Katrianne, Mahfouz, Naser G. A., Makhmutov, Vladimir, Massabò, Dario, Mathot, Serge, Mauldin, Roy L., Mentler, Bernhard, Müller, Tatjana, Onnela, Antti, Petäjä, Tuukka, Philippov, Maxim, Piedehierro, Ana A., Pozzer, Andrea, Ranjithkumar, Ananth, Schervish, Meredith, Schobesberger, Siegfried, Simon, Mario, Stozhkov, Yuri, Tomé, António, Umo, Nsikanabasi Silas, Vogel, Franziska, Wagner, Robert, Wang, Dongyu S., Weber, Stefan K., Welti, André, Wu, Yusheng, Zauner-Wieczorek, Marcel, Sipilä, Mikko, Winkler, Paul M., Hansel, Armin, Baltensperger, Urs, Kulmala, Markku, Flagan, Richard C., Curtius, Joachim, Riipinen, Ilona, Gordon, Hamish, Lelieveld, Jos, El-Haddad, Imad, Volkamer, Rainer, Worsnop, Douglas R., Christoudias, Theodoros, Kirkby, Jasper, Möhler, Ottmar, and Donahue, Neil M.

Published
2022
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3. Nitrate Radicals Suppress Biogenic New Particle Formation from Monoterpene Oxidation

Author

Li, Dandan, primary, Huang, Wei, additional, Wang, Dongyu, additional, Wang, Mingyi, additional, Thornton, Joel A., additional, Caudillo, Lucía, additional, Rörup, Birte, additional, Marten, Ruby, additional, Scholz, Wiebke, additional, Finkenzeller, Henning, additional, Marie, Guillaume, additional, Baltensperger, Urs, additional, Bell, David M., additional, Brasseur, Zoé, additional, Curtius, Joachim, additional, Dada, Lubna, additional, Duplissy, Jonathan, additional, Gong, Xianda, additional, Hansel, Armin, additional, He, Xu-Cheng, additional, Hofbauer, Victoria, additional, Junninen, Heikki, additional, Krechmer, Jordan E., additional, Kürten, Andreas, additional, Lamkaddam, Houssni, additional, Lehtipalo, Katrianne, additional, Lopez, Brandon, additional, Ma, Yingge, additional, Mahfouz, Naser G. A., additional, Manninen, Hanna E., additional, Mentler, Bernhard, additional, Perrier, Sebastien, additional, Petäjä, Tuukka, additional, Pfeifer, Joschka, additional, Philippov, Maxim, additional, Schervish, Meredith, additional, Schobesberger, Siegfried, additional, Shen, Jiali, additional, Surdu, Mihnea, additional, Tomaz, Sophie, additional, Volkamer, Rainer, additional, Wang, Xinke, additional, Weber, Stefan K., additional, Welti, André, additional, Worsnop, Douglas R., additional, Wu, Yusheng, additional, Yan, Chao, additional, Zauner-Wieczorek, Marcel, additional, Kulmala, Markku, additional, Kirkby, Jasper, additional, Donahue, Neil M., additional, George, Christian, additional, El-Haddad, Imad, additional, Bianchi, Federico, additional, and Riva, Matthieu, additional

Published
2024
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4. Assessing the importance of nitric acid and ammonia for particle growth in the polluted boundary layer

Author

Marten, Ruby, primary, Xiao, Mao, additional, Wang, Mingyi, additional, Kong, Weimeng, additional, He, Xu-Cheng, additional, Stolzenburg, Dominik, additional, Pfeifer, Joschka, additional, Marie, Guillaume, additional, Wang, Dongyu S., additional, Elser, Miriam, additional, Baccarini, Andrea, additional, Lee, Chuan Ping, additional, Amorim, Antonio, additional, Baalbaki, Rima, additional, Bell, David M., additional, Bertozzi, Barbara, additional, Caudillo, Lucía, additional, Dada, Lubna, additional, Duplissy, Jonathan, additional, Finkenzeller, Henning, additional, Heinritzi, Martin, additional, Lampimäki, Markus, additional, Lehtipalo, Katrianne, additional, Manninen, Hanna E., additional, Mentler, Bernhard, additional, Onnela, Antti, additional, Petäjä, Tuukka, additional, Philippov, Maxim, additional, Rörup, Birte, additional, Scholz, Wiebke, additional, Shen, Jiali, additional, Tham, Yee Jun, additional, Tomé, António, additional, Wagner, Andrea C., additional, Weber, Stefan K., additional, Zauner-Wieczorek, Marcel, additional, Curtius, Joachim, additional, Kulmala, Markku, additional, Volkamer, Rainer, additional, Worsnop, Douglas R., additional, Dommen, Josef, additional, Flagan, Richard C., additional, Kirkby, Jasper, additional, McPherson Donahue, Neil, additional, Lamkaddam, Houssni, additional, Baltensperger, Urs, additional, and El Haddad, Imad, additional

Published
2024
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5. Rapid growth of new atmospheric particles by nitric acid and ammonia condensation

Author

Wang, Mingyi, Kong, Weimeng, Marten, Ruby, He, Xu-Cheng, Chen, Dexian, Pfeifer, Joschka, Heitto, Arto, Kontkanen, Jenni, Dada, Lubna, Kürten, Andreas, Yli-Juuti, Taina, Manninen, Hanna E., Amanatidis, Stavros, Amorim, António, Baalbaki, Rima, Baccarini, Andrea, Bell, David M., Bertozzi, Barbara, Bräkling, Steffen, Brilke, Sophia, Murillo, Lucía Caudillo, Chiu, Randall, Chu, Biwu, De Menezes, Louis-Philippe, Duplissy, Jonathan, Finkenzeller, Henning, Carracedo, Loic Gonzalez, Granzin, Manuel, Guida, Roberto, Hansel, Armin, Hofbauer, Victoria, Krechmer, Jordan, Lehtipalo, Katrianne, Lamkaddam, Houssni, Lampimäki, Markus, Lee, Chuan Ping, Makhmutov, Vladimir, Marie, Guillaume, Mathot, Serge, Mauldin, Roy L., Mentler, Bernhard, Müller, Tatjana, Onnela, Antti, Partoll, Eva, Petäjä, Tuukka, Philippov, Maxim, Pospisilova, Veronika, Ranjithkumar, Ananth, Rissanen, Matti, Rörup, Birte, Scholz, Wiebke, Shen, Jiali, Simon, Mario, Sipilä, Mikko, Steiner, Gerhard, Stolzenburg, Dominik, Tham, Yee Jun, Tomé, António, Wagner, Andrea C., Wang, Dongyu S., Wang, Yonghong, Weber, Stefan K., Winkler, Paul M., Wlasits, Peter J., Wu, Yusheng, Xiao, Mao, Ye, Qing, Zauner-Wieczorek, Marcel, Zhou, Xueqin, Volkamer, Rainer, Riipinen, Ilona, Dommen, Josef, Curtius, Joachim, Baltensperger, Urs, Kulmala, Markku, Worsnop, Douglas R., Kirkby, Jasper, Seinfeld, John H., El-Haddad, Imad, Flagan, Richard C., and Donahue, Neil M.

Published
2020
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6. An intercomparison study of four different techniques for measuring the chemical composition of nanoparticles

Author

Caudillo, Lucía, primary, Surdu, Mihnea, additional, Lopez, Brandon, additional, Wang, Mingyi, additional, Thoma, Markus, additional, Bräkling, Steffen, additional, Buchholz, Angela, additional, Simon, Mario, additional, Wagner, Andrea C., additional, Müller, Tatjana, additional, Granzin, Manuel, additional, Heinritzi, Martin, additional, Amorim, Antonio, additional, Bell, David M., additional, Brasseur, Zoé, additional, Dada, Lubna, additional, Duplissy, Jonathan, additional, Finkenzeller, Henning, additional, He, Xu-Cheng, additional, Lamkaddam, Houssni, additional, Mahfouz, Naser G. A., additional, Makhmutov, Vladimir, additional, Manninen, Hanna E., additional, Marie, Guillaume, additional, Marten, Ruby, additional, Mauldin, Roy L., additional, Mentler, Bernhard, additional, Onnela, Antti, additional, Petäjä, Tuukka, additional, Pfeifer, Joschka, additional, Philippov, Maxim, additional, Piedehierro, Ana A., additional, Rörup, Birte, additional, Scholz, Wiebke, additional, Shen, Jiali, additional, Stolzenburg, Dominik, additional, Tauber, Christian, additional, Tian, Ping, additional, Tomé, António, additional, Umo, Nsikanabasi Silas, additional, Wang, Dongyu S., additional, Wang, Yonghong, additional, Weber, Stefan K., additional, Welti, André, additional, Zauner-Wieczorek, Marcel, additional, Baltensperger, Urs, additional, Flagan, Richard C., additional, Hansel, Armin, additional, Kirkby, Jasper, additional, Kulmala, Markku, additional, Lehtipalo, Katrianne, additional, Worsnop, Douglas R., additional, Haddad, Imad El, additional, Donahue, Neil M., additional, Vogel, Alexander L., additional, Kürten, Andreas, additional, and Curtius, Joachim, additional

Published
2023
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7. Measurement of the collision rate coefficients between atmospheric ions and multiply charged aerosol particles in the CERN CLOUD chamber

Author

Pfeifer, Joschka, Mahfouz, Naser G. A., Schulze, Benjamin C., Mathot, Serge, Stolzenburg, Dominik, Baalbaki, Rima, Brasseur, Zoé, Caudillo, Lucia, Dada, Lubna, Granzin, Manuel, He, Xu-Cheng, Lamkaddam, Houssni, Lopez, Brandon, Makhmutov, Vladimir, Marten, Ruby, Mentler, Bernhard, Müller, Tatjana, Onnela, Antti, Philippov, Maxim, Piedehierro, Ana A., Rörup, Birte, Schervish, Meredith, Tian, Ping, Umo, Nsikanabasi S., Wang, Dongyu S., Wang, Mingyi, Weber, Stefan K., Welti, André, Wu, Yusheng, Zauner-Wieczorek, Marcel, Amorim, Antonio, Haddad, Imad, Kulmala, Markku, Lehtipalo, Katrianne, Petäjä, Tuukka, Tomé, António, Mirme, Sander, Manninen, Hanna E., Donahue, Neil M., Flagan, Richard C., Kürten, Andreas, Curtius, Joachim, and Kirkby, Jasper

Abstract

Aerosol particles have an important role in Earth's radiation balance and climate, both directly and indirectly through aerosol–cloud interactions. Most aerosol particles in the atmosphere are weakly charged, affecting both their collision rates with ions and neutral molecules, as well as the rates by which they are scavenged by other aerosol particles and cloud droplets. The rate coefficients between ions and aerosol particles are important since they determine the growth rates and lifetimes of ions and charged aerosol particles, and so they may influence cloud microphysics, dynamics, and aerosol processing. However, despite their importance, very few experimental measurements exist of charged aerosol collision rates under atmospheric conditions, where galactic cosmic rays in the lower troposphere give rise to ion pair concentrations of around 1000 cm−3. Here we present measurements in the CERN CLOUD chamber of the rate coefficients between ions and small ( nm) aerosol particles containing up to 9 elementary charges, e. We find the rate coefficient of a singly charged ion with an oppositely charged particle increases from 2.0 (0.4–4.4) × 10−6 cm3 s−1 to 30.6 (24.9–45.1) × 10−6 cm3 s−1 for particles with charges of 1 to 9 e, respectively, where the parentheses indicate the ±1σ uncertainty interval. Our measurements are compatible with theoretical predictions and show excellent agreement with the model of Gatti and Kortshagen (2008).

Published
2023

8. Iodine oxoacids enhance nucleation of sulfuric acid particles in the atmosphere

Author

He, Xu-Cheng, Simon, Mario, Iyer, Siddharth, Xie, Hong-Bin, Rörup, Birte, Shen, Jiali, Finkenzeller, Henning, Stolzenburg, Dominik, Zhang, Rongjie, Baccarini, Andrea, Tham, Yee Jun, Wang, Mingyi, Amanatidis, Stavros, Piedehierro, Ana A., Amorim, Antonio, Baalbaki, Rima, Brasseur, Zoé, Caudillo, Lucía, Chu, Biwu, Dada, Lubna, Duplissy, Jonathan, El Haddad, Imad, Flagan, Richard C., Granzin, Manuel, Hansel, Armin, Heinritzi, Martin, Hofbauer, Victoria, Jokinen, Tuija, Kemppainen, Deniz, Kong, Weimeng, Krechmer, Jordan, Kürten, Andreas, Lamkaddam, Houssni, Lopez, Brandon, Ma, Fangfang, Mahfouz, Naser G. A., Makhmutov, Vladimir, Manninen, Hanna E., Marie, Guillaume, Marten, Ruby, Massabò, Dario, Mauldin, Roy L., Mentler, Bernhard, Onnela, Antti, Petäjä, Tuukka, Pfeifer, Joschka, Philippov, Maxim, Ranjithkumar, Ananth, Rissanen, Matti P., Schobesberger, Siegfried, Scholz, Wiebke, Schulze, Benjamin, Surdu, Mihnea, Thakur, Roseline C., Tomé, António, Wagner, Andrea C., Wang, Dongyu, Wang, Yonghong, Weber, Stefan K., Welti, André, Winkler, Paul M., Zauner-Wieczorek, Marcel, Baltensperger, Urs, Curtius, Joachim, Kurtén, Theo, Worsnop, Douglas R., Volkamer, Rainer, Lehtipalo, Katrianne, Kirkby, Jasper, Donahue, Neil M., Sipilä, Mikko, Kulmala, Markku, He, Xu-Cheng, Simon, Mario, Iyer, Siddharth, Xie, Hong-Bin, Rörup, Birte, Shen, Jiali, Finkenzeller, Henning, Stolzenburg, Dominik, Zhang, Rongjie, Baccarini, Andrea, Tham, Yee Jun, Wang, Mingyi, Amanatidis, Stavros, Piedehierro, Ana A., Amorim, Antonio, Baalbaki, Rima, Brasseur, Zoé, Caudillo, Lucía, Chu, Biwu, Dada, Lubna, Duplissy, Jonathan, El Haddad, Imad, Flagan, Richard C., Granzin, Manuel, Hansel, Armin, Heinritzi, Martin, Hofbauer, Victoria, Jokinen, Tuija, Kemppainen, Deniz, Kong, Weimeng, Krechmer, Jordan, Kürten, Andreas, Lamkaddam, Houssni, Lopez, Brandon, Ma, Fangfang, Mahfouz, Naser G. A., Makhmutov, Vladimir, Manninen, Hanna E., Marie, Guillaume, Marten, Ruby, Massabò, Dario, Mauldin, Roy L., Mentler, Bernhard, Onnela, Antti, Petäjä, Tuukka, Pfeifer, Joschka, Philippov, Maxim, Ranjithkumar, Ananth, Rissanen, Matti P., Schobesberger, Siegfried, Scholz, Wiebke, Schulze, Benjamin, Surdu, Mihnea, Thakur, Roseline C., Tomé, António, Wagner, Andrea C., Wang, Dongyu, Wang, Yonghong, Weber, Stefan K., Welti, André, Winkler, Paul M., Zauner-Wieczorek, Marcel, Baltensperger, Urs, Curtius, Joachim, Kurtén, Theo, Worsnop, Douglas R., Volkamer, Rainer, Lehtipalo, Katrianne, Kirkby, Jasper, Donahue, Neil M., Sipilä, Mikko, and Kulmala, Markku

Abstract

The main nucleating vapor in the atmosphere is thought to be sulfuric acid (H2SO4), stabilized by ammonia (NH3). However, in marine and polar regions, NH3 is generally low, and H2SO4 is frequently found together with iodine oxoacids [HIOx, i.e., iodic acid (HIO3) and iodous acid (HIO2)]. In experiments performed with the CERN CLOUD (Cosmics Leaving OUtdoor Droplets) chamber, we investigated the interplay of H2SO4 and HIOx during atmospheric particle nucleation. We found that HIOx greatly enhances H2SO4(-NH3) nucleation through two different interactions. First, HIO3 strongly binds with H2SO4 in charged clusters so they drive particle nucleation synergistically. Second, HIO2 substitutes for NH3, forming strongly bound H2SO4-HIO2 acid-base pairs in molecular clusters. Global observations imply that HIOx is enhancing H2SO4(-NH3) nucleation rates 10- to 10,000-fold in marine and polar regions.

Published
2023

9. Temperature, humidity, and ionisation effect of iodine oxoacid nucleation

Author

Rörup, Birte, He, Xu-Cheng, Shen, Jiali, Baalbaki, Rima, Dada, Lubna, Sipilä, Mikko, Kirkby, Jasper, Kulmala, Markku, Amorim, Antonio, Baccarini, Andrea, Bell, David M., Caudillo-Plath, Lucía, Duplissy, Jonathan, Finkenzeller, Henning, Kürten, Andreas, Lamkaddam, Houssni, Lee, Chuan Ping, Makhmutov, Vladimir, Manninen, Hanna E., Marie, Guillaume, Marten, Ruby, Mentler, Bernhard, Onnela, Antti, Philippov, Maxim, Scholz, Carolin Wiebke, Simon, Mario, Stolzenburg, Dominik, Tham, Yee Jun, Tomé, António, Wagner, Andrea C., Wang, Mingyi, Wang, Dongyu, Wang, Yonghong, Weber, Stefan K., Zauner-Wieczorek, Marcel, Baltensperger, Urs, Curtius, Joachim, Donahue, Neil M., El Haddad, Imad, Flagan, Richard C., Hansel, Armin, Möhler, Ottmar, Petäjä, Tuukka, Volkamer, Rainer, Worsnop, Douglas, and Lehtipalo, Katrianne

Abstract

Iodine oxoacids are recognised for their significant contribution to the formation of new particles in marine and polar atmospheres. Nevertheless, to incorporate the iodine oxoacid nucleation mechanism into global simulations, it is essential to comprehend how this mechanism varies under various atmospheric conditions. In this study, we combined measurements from the CLOUD (Cosmic Leaving OUtdoor Droplets) chamber at CERN and simulations with a kinetic model to investigate the impact of temperature, ionisation, and humidity on iodine oxoacid nucleation. Our findings reveal that ion-induced particle formation rates remain largely unaffected by changes in temperature. However, neutral particle formation rates experience a significant increase when the temperature drops from +10 °C to −10 °C. Running the kinetic model with varying ionisation rates demonstrates that the particle formation rate only increases with a higher ionisation rate when the iodic acid concentration exceeds 1.5 × 107cm−3, a concentration rarely reached in pristine marine atmospheres. Consequently, our simulations suggest that, despite higher ionisation rates, the charged cluster nucleation pathway of iodic acid is unlikely to be enhanced in the upper troposphere by higher ionisation rates. Instead, the neutral nucleation channel is likely to be the dominant channel in that region. Notably, the iodine oxoacid nucleation mechanism remains unaffected by changes in relative humidity from 2% to 80%. However, under unrealistically dry conditions (below 0.008% RH at +10 °C), iodine oxides (I2O4and I2O5) significantly enhance formation rates. Therefore, we conclude that iodine oxoacid nucleation is the dominant nucleation mechanism for iodine nucleation in the marine and polar boundary layer atmosphere.

Published
2024
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10. Molecular Understanding of the Enhancement in Organic Aerosol Mass at High Relative Humidity

Author

Surdu, Mihnea, primary, Lamkaddam, Houssni, additional, Wang, Dongyu S., additional, Bell, David M., additional, Xiao, Mao, additional, Lee, Chuan Ping, additional, Li, Dandan, additional, Caudillo, Lucía, additional, Marie, Guillaume, additional, Scholz, Wiebke, additional, Wang, Mingyi, additional, Lopez, Brandon, additional, Piedehierro, Ana A., additional, Ataei, Farnoush, additional, Baalbaki, Rima, additional, Bertozzi, Barbara, additional, Bogert, Pia, additional, Brasseur, Zoé, additional, Dada, Lubna, additional, Duplissy, Jonathan, additional, Finkenzeller, Henning, additional, He, Xu-Cheng, additional, Höhler, Kristina, additional, Korhonen, Kimmo, additional, Krechmer, Jordan E., additional, Lehtipalo, Katrianne, additional, Mahfouz, Naser G. A., additional, Manninen, Hanna E., additional, Marten, Ruby, additional, Massabò, Dario, additional, Mauldin, Roy, additional, Petäjä, Tuukka, additional, Pfeifer, Joschka, additional, Philippov, Maxim, additional, Rörup, Birte, additional, Simon, Mario, additional, Shen, Jiali, additional, Umo, Nsikanabasi Silas, additional, Vogel, Franziska, additional, Weber, Stefan K., additional, Zauner-Wieczorek, Marcel, additional, Volkamer, Rainer, additional, Saathoff, Harald, additional, Möhler, Ottmar, additional, Kirkby, Jasper, additional, Worsnop, Douglas R., additional, Kulmala, Markku, additional, Stratmann, Frank, additional, Hansel, Armin, additional, Curtius, Joachim, additional, Welti, André, additional, Riva, Matthieu, additional, Donahue, Neil M., additional, Baltensperger, Urs, additional, and El Haddad, Imad, additional

Published
2023
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11. Supplementary material to "Measurement of the rate coefficients between atmospheric ions and multiply charged aerosol particles in the CERN CLOUD chamber"

Author

Pfeifer, Joschka, primary, Mahfouz, Naser G., additional, Schulze, Ben, additional, Mathot, Serge, additional, Stolzenburg, Dominik, additional, Baalbaki, Rima, additional, Brasseur, Zoé, additional, Caudillo, Lucia, additional, Dada, Lubna, additional, Granzin, Manuel, additional, He, Xu-Cheng, additional, Lamkaddam, Houssni, additional, Lopez, Brandon, additional, Makhmutov, Vladimir, additional, Marten, Ruby, additional, Mentler, Bernhard, additional, Müller, Tatjana, additional, Onnela, Antti, additional, Philippov, Maxim, additional, Piedehierro, Ana A., additional, Rörup, Birte, additional, Schervish, Meredith, additional, Tian, Ping, additional, Umo, Nsikanabasi S., additional, Wang, Dongyu S., additional, Wang, Mingyi, additional, Weber, Stefan K., additional, Welti, André, additional, Wu, Yusheng, additional, Zauner-Wieczorek, Marcel, additional, Amorim, Antonio, additional, El Haddad, Imad, additional, Kulmala, Markku, additional, Lehtipalo, Katrianne, additional, Petäjä, Tuukka, additional, Tomé, António, additional, Mirme, Sander, additional, Manninen, Hanna E., additional, Donahue, Neil M., additional, Flagan, Richard C., additional, Kürten, Andreas, additional, Curtius, Joachim, additional, and Kirkby, Jasper, additional

Published
2022
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12. Measurement of the rate coefficients between atmospheric ions and multiply charged aerosol particles in the CERN CLOUD chamber

Author

Pfeifer, Joschka, primary, Mahfouz, Naser G., additional, Schulze, Ben, additional, Mathot, Serge, additional, Stolzenburg, Dominik, additional, Baalbaki, Rima, additional, Brasseur, Zoé, additional, Caudillo, Lucia, additional, Dada, Lubna, additional, Granzin, Manuel, additional, He, Xu-Cheng, additional, Lamkaddam, Houssni, additional, Lopez, Brandon, additional, Makhmutov, Vladimir, additional, Marten, Ruby, additional, Mentler, Bernhard, additional, Müller, Tatjana, additional, Onnela, Antti, additional, Philippov, Maxim, additional, Piedehierro, Ana A., additional, Rörup, Birte, additional, Schervish, Meredith, additional, Tian, Ping, additional, Umo, Nsikanabasi S., additional, Wang, Dongyu S., additional, Wang, Mingyi, additional, Weber, Stefan K., additional, Welti, André, additional, Wu, Yusheng, additional, Zauner-Wieczorek, Marcel, additional, Amorim, Antonio, additional, El Haddad, Imad, additional, Kulmala, Markku, additional, Lehtipalo, Katrianne, additional, Petäjä, Tuukka, additional, Tomé, António, additional, Mirme, Sander, additional, Manninen, Hanna E., additional, Donahue, Neil M., additional, Flagan, Richard C., additional, Kürten, Andreas, additional, Curtius, Joachim, additional, and Kirkby, Jasper, additional

Published
2022
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13. The gas-phase formation mechanism of iodic acid as an atmospheric aerosol source

Author

Finkenzeller, Henning, primary, Iyer, Siddharth, additional, He, Xu-Cheng, additional, Simon, Mario, additional, Koenig, Theodore K., additional, Lee, Christopher F., additional, Valiev, Rashid, additional, Hofbauer, Victoria, additional, Amorim, Antonio, additional, Baalbaki, Rima, additional, Baccarini, Andrea, additional, Beck, Lisa, additional, Bell, David M., additional, Caudillo, Lucía, additional, Chen, Dexian, additional, Chiu, Randall, additional, Chu, Biwu, additional, Dada, Lubna, additional, Duplissy, Jonathan, additional, Heinritzi, Martin, additional, Kemppainen, Deniz, additional, Kim, Changhyuk, additional, Krechmer, Jordan, additional, Kürten, Andreas, additional, Kvashnin, Alexandr, additional, Lamkaddam, Houssni, additional, Lee, Chuan Ping, additional, Lehtipalo, Katrianne, additional, Li, Zijun, additional, Makhmutov, Vladimir, additional, Manninen, Hanna E., additional, Marie, Guillaume, additional, Marten, Ruby, additional, Mauldin, Roy L., additional, Mentler, Bernhard, additional, Müller, Tatjana, additional, Petäjä, Tuukka, additional, Philippov, Maxim, additional, Ranjithkumar, Ananth, additional, Rörup, Birte, additional, Shen, Jiali, additional, Stolzenburg, Dominik, additional, Tauber, Christian, additional, Tham, Yee Jun, additional, Tomé, António, additional, Vazquez-Pufleau, Miguel, additional, Wagner, Andrea C., additional, Wang, Dongyu S., additional, Wang, Mingyi, additional, Wang, Yonghong, additional, Weber, Stefan K., additional, Nie, Wei, additional, Wu, Yusheng, additional, Xiao, Mao, additional, Ye, Qing, additional, Zauner-Wieczorek, Marcel, additional, Hansel, Armin, additional, Baltensperger, Urs, additional, Brioude, Jérome, additional, Curtius, Joachim, additional, Donahue, Neil M., additional, Haddad, Imad El, additional, Flagan, Richard C., additional, Kulmala, Markku, additional, Kirkby, Jasper, additional, Sipilä, Mikko, additional, Worsnop, Douglas R., additional, Kurten, Theo, additional, Rissanen, Matti, additional, and Volkamer, Rainer, additional

Published
2022
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14. High Gas-Phase Methanesulfonic Acid Production in the OH-Initiated Oxidation of Dimethyl Sulfide at Low Temperatures

Author

Shen, Jiali, primary, Scholz, Wiebke, additional, He, Xu-Cheng, additional, Zhou, Putian, additional, Marie, Guillaume, additional, Wang, Mingyi, additional, Marten, Ruby, additional, Surdu, Mihnea, additional, Rörup, Birte, additional, Baalbaki, Rima, additional, Amorim, Antonio, additional, Ataei, Farnoush, additional, Bell, David M., additional, Bertozzi, Barbara, additional, Brasseur, Zoé, additional, Caudillo, Lucía, additional, Chen, Dexian, additional, Chu, Biwu, additional, Dada, Lubna, additional, Duplissy, Jonathan, additional, Finkenzeller, Henning, additional, Granzin, Manuel, additional, Guida, Roberto, additional, Heinritzi, Martin, additional, Hofbauer, Victoria, additional, Iyer, Siddharth, additional, Kemppainen, Deniz, additional, Kong, Weimeng, additional, Krechmer, Jordan E., additional, Kürten, Andreas, additional, Lamkaddam, Houssni, additional, Lee, Chuan Ping, additional, Lopez, Brandon, additional, Mahfouz, Naser G. A., additional, Manninen, Hanna E., additional, Massabò, Dario, additional, Mauldin, Roy L., additional, Mentler, Bernhard, additional, Müller, Tatjana, additional, Pfeifer, Joschka, additional, Philippov, Maxim, additional, Piedehierro, Ana A., additional, Roldin, Pontus, additional, Schobesberger, Siegfried, additional, Simon, Mario, additional, Stolzenburg, Dominik, additional, Tham, Yee Jun, additional, Tomé, António, additional, Umo, Nsikanabasi Silas, additional, Wang, Dongyu, additional, Wang, Yonghong, additional, Weber, Stefan K., additional, Welti, André, additional, Wollesen de Jonge, Robin, additional, Wu, Yusheng, additional, Zauner-Wieczorek, Marcel, additional, Zust, Felix, additional, Baltensperger, Urs, additional, Curtius, Joachim, additional, Flagan, Richard C., additional, Hansel, Armin, additional, Möhler, Ottmar, additional, Petäjä, Tuukka, additional, Volkamer, Rainer, additional, Kulmala, Markku, additional, Lehtipalo, Katrianne, additional, Rissanen, Matti, additional, Kirkby, Jasper, additional, El-Haddad, Imad, additional, Bianchi, Federico, additional, Sipilä, Mikko, additional, Donahue, Neil M., additional, and Worsnop, Douglas R., additional

Published
2022
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15. An intercomparison study of four different techniques for measuring the chemical composition of nanoparticles

Author

Caudillo, Lucía, primary, Surdu, Mihnea, additional, Lopez, Brandon, additional, Wang, Mingyi, additional, Thoma, Markus, additional, Bräkling, Steffen, additional, Buchholz, Angela, additional, Simon, Mario, additional, Wagner, Andrea C., additional, Müller, Tatjana, additional, Granzin, Manuel, additional, Heinritzi, Martin, additional, Amorim, Antonio, additional, Bell, David M., additional, Brasseur, Zoé, additional, Dada, Lubna, additional, Duplissy, Jonathan, additional, Finkenzeller, Henning, additional, He, Xu-Cheng, additional, Lamkaddam, Houssni, additional, Mahfouz, Naser G. A., additional, Makhmutov, Vladimir, additional, Manninen, Hanna E., additional, Marie, Guillaume, additional, Marten, Ruby, additional, Mauldin, Roy L., additional, Mentler, Bernhard, additional, Onnela, Antti, additional, Petäjä, Tuukka, additional, Pfeifer, Joschka, additional, Philippov, Maxim, additional, Piedehierro, Ana A., additional, Rörup, Birte, additional, Scholz, Wiebke, additional, Shen, Jiali, additional, Stolzenburg, Dominik, additional, Tauber, Christian, additional, Tian, Ping, additional, Tomé, António, additional, Umo, Nsikanabasi Silas, additional, Wang, Dongyu S., additional, Wang, Yonghong, additional, Weber, Stefan K., additional, Welti, André, additional, Zauner-Wieczorek, Marcel, additional, Baltensperger, Urs, additional, Flagan, Richard C., additional, Hansel, Armin, additional, Kirkby, Jasper, additional, Kulmala, Markku, additional, Lehtipalo, Katrianne, additional, Worsnop, Douglas R., additional, Haddad, Imad El, additional, Donahue, Neil M., additional, Vogel, Alexander L., additional, Kürten, Andreas, additional, and Curtius, Joachim, additional

Published
2022
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16. Supplementary material to "An intercomparison study of four different techniques for measuring the chemical composition of nanoparticles"

Author

Caudillo, Lucía, primary, Surdu, Mihnea, additional, Lopez, Brandon, additional, Wang, Mingyi, additional, Thoma, Markus, additional, Bräkling, Steffen, additional, Buchholz, Angela, additional, Simon, Mario, additional, Wagner, Andrea C., additional, Müller, Tatjana, additional, Granzin, Manuel, additional, Heinritzi, Martin, additional, Amorim, Antonio, additional, Bell, David M., additional, Brasseur, Zoé, additional, Dada, Lubna, additional, Duplissy, Jonathan, additional, Finkenzeller, Henning, additional, He, Xu-Cheng, additional, Lamkaddam, Houssni, additional, Mahfouz, Naser G. A., additional, Makhmutov, Vladimir, additional, Manninen, Hanna E., additional, Marie, Guillaume, additional, Marten, Ruby, additional, Mauldin, Roy L., additional, Mentler, Bernhard, additional, Onnela, Antti, additional, Petäjä, Tuukka, additional, Pfeifer, Joschka, additional, Philippov, Maxim, additional, Piedehierro, Ana A., additional, Rörup, Birte, additional, Scholz, Wiebke, additional, Shen, Jiali, additional, Stolzenburg, Dominik, additional, Tauber, Christian, additional, Tian, Ping, additional, Tomé, António, additional, Umo, Nsikanabasi Silas, additional, Wang, Dongyu S., additional, Wang, Yonghong, additional, Weber, Stefan K., additional, Welti, André, additional, Zauner-Wieczorek, Marcel, additional, Baltensperger, Urs, additional, Flagan, Richard C., additional, Hansel, Armin, additional, Kirkby, Jasper, additional, Kulmala, Markku, additional, Lehtipalo, Katrianne, additional, Worsnop, Douglas R., additional, Haddad, Imad El, additional, Donahue, Neil M., additional, Vogel, Alexander L., additional, Kürten, Andreas, additional, and Curtius, Joachim, additional

Published
2022
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17. Survival of newly formed particles in haze conditions

Author

Marten, Ruby, primary, Xiao, Mao, additional, Rörup, Birte, additional, Wang, Mingyi, additional, Kong, Weimeng, additional, He, Xu-Cheng, additional, Stolzenburg, Dominik, additional, Pfeifer, Joschka, additional, Marie, Guillaume, additional, Wang, Dongyu S., additional, Scholz, Wiebke, additional, Baccarini, Andrea, additional, Lee, Chuan Ping, additional, Amorim, Antonio, additional, Baalbaki, Rima, additional, Bell, David M., additional, Bertozzi, Barbara, additional, Caudillo, Lucía, additional, Chu, Biwu, additional, Dada, Lubna, additional, Duplissy, Jonathan, additional, Finkenzeller, Henning, additional, Carracedo, Loïc Gonzalez, additional, Granzin, Manuel, additional, Hansel, Armin, additional, Heinritzi, Martin, additional, Hofbauer, Victoria, additional, Kemppainen, Deniz, additional, Kürten, Andreas, additional, Lampimäki, Markus, additional, Lehtipalo, Katrianne, additional, Makhmutov, Vladimir, additional, Manninen, Hanna E., additional, Mentler, Bernhard, additional, Petäjä, Tuukka, additional, Philippov, Maxim, additional, Shen, Jiali, additional, Simon, Mario, additional, Stozhkov, Yuri, additional, Tomé, António, additional, Wagner, Andrea C., additional, Wang, Yonghong, additional, Weber, Stefan K., additional, Wu, Yusheng, additional, Zauner-Wieczorek, Marcel, additional, Curtius, Joachim, additional, Kulmala, Markku, additional, Möhler, Ottmar, additional, Volkamer, Rainer, additional, Winkler, Paul M., additional, Worsnop, Douglas R., additional, Dommen, Josef, additional, Flagan, Richard C., additional, Kirkby, Jasper, additional, Donahue, Neil M., additional, Lamkaddam, Houssni, additional, Baltensperger, Urs, additional, and El Haddad, Imad, additional

Published
2022
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18. Chemical composition of nanoparticles from <i>α</i>-pinene nucleation and the influence of isoprene and relative humidity at low temperature

Author

Caudillo, Lucía, primary, Rörup, Birte, additional, Heinritzi, Martin, additional, Marie, Guillaume, additional, Simon, Mario, additional, Wagner, Andrea C., additional, Müller, Tatjana, additional, Granzin, Manuel, additional, Amorim, Antonio, additional, Ataei, Farnoush, additional, Baalbaki, Rima, additional, Bertozzi, Barbara, additional, Brasseur, Zoé, additional, Chiu, Randall, additional, Chu, Biwu, additional, Dada, Lubna, additional, Duplissy, Jonathan, additional, Finkenzeller, Henning, additional, Gonzalez Carracedo, Loïc, additional, He, Xu-Cheng, additional, Hofbauer, Victoria, additional, Kong, Weimeng, additional, Lamkaddam, Houssni, additional, Lee, Chuan P., additional, Lopez, Brandon, additional, Mahfouz, Naser G. A., additional, Makhmutov, Vladimir, additional, Manninen, Hanna E., additional, Marten, Ruby, additional, Massabò, Dario, additional, Mauldin, Roy L., additional, Mentler, Bernhard, additional, Molteni, Ugo, additional, Onnela, Antti, additional, Pfeifer, Joschka, additional, Philippov, Maxim, additional, Piedehierro, Ana A., additional, Schervish, Meredith, additional, Scholz, Wiebke, additional, Schulze, Benjamin, additional, Shen, Jiali, additional, Stolzenburg, Dominik, additional, Stozhkov, Yuri, additional, Surdu, Mihnea, additional, Tauber, Christian, additional, Tham, Yee Jun, additional, Tian, Ping, additional, Tomé, António, additional, Vogt, Steffen, additional, Wang, Mingyi, additional, Wang, Dongyu S., additional, Weber, Stefan K., additional, Welti, André, additional, Yonghong, Wang, additional, Yusheng, Wu, additional, Zauner-Wieczorek, Marcel, additional, Baltensperger, Urs, additional, El Haddad, Imad, additional, Flagan, Richard C., additional, Hansel, Armin, additional, Höhler, Kristina, additional, Kirkby, Jasper, additional, Kulmala, Markku, additional, Lehtipalo, Katrianne, additional, Möhler, Ottmar, additional, Saathoff, Harald, additional, Volkamer, Rainer, additional, Winkler, Paul M., additional, Donahue, Neil M., additional, Kürten, Andreas, additional, and Curtius, Joachim, additional

Published
2021
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19. Supplementary material to "Chemical composition of nanoparticles from α-pinene nucleation and the influence of isoprene and relative humidity at low temperature"

Author

Caudillo, Lucía, primary, Rörup, Birte, additional, Heinritzi, Martin, additional, Marie, Guillaume, additional, Simon, Mario, additional, Wagner, Andrea C., additional, Müller, Tatjana, additional, Granzin, Manuel, additional, Amorim, Antonio, additional, Ataei, Farnoush, additional, Baalbaki, Rima, additional, Bertozzi, Barbara, additional, Brasseur, Zoé, additional, Chiu, Randall, additional, Chu, Biwu, additional, Dada, Lubna, additional, Duplissy, Jonathan, additional, Finkenzeller, Henning, additional, Gonzalez Carracedo, Loïc, additional, He, Xu-Cheng, additional, Hofbauer, Victoria, additional, Kong, Weimeng, additional, Lamkaddam, Houssni, additional, Lee, Chuan P., additional, Lopez, Brandon, additional, Mahfouz, Naser G. A., additional, Makhmutov, Vladimir, additional, Manninen, Hanna E., additional, Marten, Ruby, additional, Massabò, Dario, additional, Mauldin, Roy L., additional, Mentler, Bernhard, additional, Molteni, Ugo, additional, Onnela, Antti, additional, Pfeifer, Joschka, additional, Philippov, Maxim, additional, Piedehierro, Ana A., additional, Schervish, Meredith, additional, Scholz, Wiebke, additional, Schulze, Benjamin, additional, Shen, Jiali, additional, Stolzenburg, Dominik, additional, Stozhkov, Yuri, additional, Surdu, Mihnea, additional, Tauber, Christian, additional, Tham, Yee Jun, additional, Tian, Ping, additional, Tomé, António, additional, Vogt, Steffen, additional, Wang, Mingyi, additional, Wang, Dongyu S., additional, Weber, Stefan K., additional, Welti, André, additional, Yonghong, Wang, additional, Yusheng, Wu, additional, Zauner-Wieczorek, Marcel, additional, Baltensperger, Urs, additional, El Haddad, Imad, additional, Flagan, Richard C., additional, Hansel, Armin, additional, Höhler, Kristina, additional, Kirkby, Jasper, additional, Kulmala, Markku, additional, Lehtipalo, Katrianne, additional, Möhler, Ottmar, additional, Saathoff, Harald, additional, Volkamer, Rainer, additional, Winkler, Paul M., additional, Donahue, Neil M., additional, Kürten, Andreas, additional, and Curtius, Joachim, additional

Published
2021
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20. Chemical composition of nanoparticles from α-pinene nucleation and the influence of isoprene and relative humidity at low temperature

Author

Caudillo, Lucía, primary, Rörup, Birte, additional, Heinritzi, Martin, additional, Marie, Guillaume, additional, Simon, Mario, additional, Wagner, Andrea C., additional, Müller, Tatjana, additional, Granzin, Manuel, additional, Amorim, Antonio, additional, Ataei, Farnoush, additional, Baalbaki, Rima, additional, Bertozzi, Barbara, additional, Brasseur, Zoé, additional, Chiu, Randall, additional, Chu, Biwu, additional, Dada, Lubna, additional, Duplissy, Jonathan, additional, Finkenzeller, Henning, additional, Gonzalez Carracedo, Loïc, additional, He, Xu-Cheng, additional, Hofbauer, Victoria, additional, Kong, Weimeng, additional, Lamkaddam, Houssni, additional, Lee, Chuan P., additional, Lopez, Brandon, additional, Mahfouz, Naser G. A., additional, Makhmutov, Vladimir, additional, Manninen, Hanna E., additional, Marten, Ruby, additional, Massabò, Dario, additional, Mauldin, Roy L., additional, Mentler, Bernhard, additional, Molteni, Ugo, additional, Onnela, Antti, additional, Pfeifer, Joschka, additional, Philippov, Maxim, additional, Piedehierro, Ana A., additional, Schervish, Meredith, additional, Scholz, Wiebke, additional, Schulze, Benjamin, additional, Shen, Jiali, additional, Stolzenburg, Dominik, additional, Stozhkov, Yuri, additional, Surdu, Mihnea, additional, Tauber, Christian, additional, Tham, Yee Jun, additional, Tian, Ping, additional, Tomé, António, additional, Vogt, Steffen, additional, Wang, Mingyi, additional, Wang, Dongyu S., additional, Weber, Stefan K., additional, Welti, André, additional, Yonghong, Wang, additional, Yusheng, Wu, additional, Zauner-Wieczorek, Marcel, additional, Baltensperger, Urs, additional, El Haddad, Imad, additional, Flagan, Richard C., additional, Hansel, Armin, additional, Höhler, Kristina, additional, Kirkby, Jasper, additional, Kulmala, Markku, additional, Lehtipalo, Katrianne, additional, Möhler, Ottmar, additional, Saathoff, Harald, additional, Volkamer, Rainer, additional, Winkler, Paul M., additional, Donahue, Neil M., additional, Kürten, Andreas, additional, and Curtius, Joachim, additional

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2021
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21. Role of iodine oxoacids in atmospheric aerosol nucleation

Author

He, Xu-Cheng, Tham, Yee Jun, Dada, Lubna, Wang, Mingyi, Finkenzeller, Henning, Stolzenburg, Dominik, Iyer, Siddharth, Simon, Mario, Kürten, Andreas, Shen, Jiali, Rörup, Birte, Rissanen, Matti, Schobesberger, Siegfried, Baalbaki, Rima, Wang, Dongyu S., Koenig, Theodore K., Jokinen, Tuija, Sarnela, Nina, Beck, Lisa J., Almeida, João, Amanatidis, Stavros, Amorim, António, Ataei, Farnoush, Baccarini, Andrea, Bertozzi, Barbara, Bianchi, Federico, Brilke, Sophia, Caudillo, Lucía, Chen, Dexian, Chiu, Randall, Chu, Biwu, Dias, António, Ding, Aijun, Dommen, Josef, Duplissy, Jonathan, El Haddad, Imad, Gonzalez Carracedo, Loïc, Granzin, Manuel, Hansel, Armin, Heinritzi, Martin, Hofbauer, Victoria, Junninen, Heikki, Kangasluoma, Juha, Kemppainen, Deniz, Kim, Changhyuk, Kong, Weimeng, Krechmer, Jordan E., Kvashin, Aleksander, Laitinen, Totti, Lamkaddam, Houssni, Lee, Chuan Ping, Lehtipalo, Katrianne, Leiminger, Markus, Li, Zijun, Makhmutov, Vladimir, Manninen, Hanna E., Marie, Guillaume, Marten, Ruby, Mathot, Serge, Mauldin, Roy L., Mentler, Bernhard, Möhler, Ottmar, Müller, Tatjana, Nie, Wei, Onnela, Antti, Petäjä, Tuukka, Pfeifer, Joschka, Philippov, Maxim, Ranjithkumar, Ananth, Saiz-Lopez, Alfonso, Salma, Imre, Scholz, Wiebke, Schuchmann, Simone, Schulze, Benjamin, Steiner, Gerhard, Stozhkov, Yuri, Tauber, Christian, Tomé, António, Thakur, Roseline C., Väisänen, Olli, Vazquez-Pufleau, Miguel, Wagner, Andrea C., Wang, Yonghong, Weber, Stefan K., Winkler, Paul M., Wu, Yusheng, Xiao, Mao, Yan, Chao, Ye, Qing, Ylisirniö, Arttu, Zauner-Wieczorek, Marcel, Zha, Qiaozhi, Zhou, Putian, Flagan, Richard C., Curtius, Joachim, Baltensperger, Urs, Kulmala, Markku, Kerminen, Veli-Matti, Kurtén, Theo, Donahue, Neil M., Volkamer, Rainer, Kirkby, Jasper, Worsnop, Douglas R., Sipilä, Mikko, Tampere University, Physics, European Organization for Nuclear Research, Academy of Finland, European Commission, Consejo Superior de Investigaciones Científicas (España), Austrian Science Fund, Swiss National Science Foundation, National Science Foundation (US), Federal Ministry of Education and Research (Germany), Fundação para a Ciência e a Tecnologia (Portugal), Jiangsu Collaborative Innovation Center of Climate Change, Estonian Research Council, National Research, Development and Innovation Office (Hungary), and National Aeronautics and Space Administration (US)

Subjects
Earth sciences, ddc:550, 114 Physical sciences
Abstract

8 pags., 5 figs., Iodic acid (HIO) is known to form aerosol particles in coastal marine regions, but predicted nucleation and growth rates are lacking. Using the CERN CLOUD (Cosmics Leaving Outdoor Droplets) chamber, we find that the nucleation rates of HIOparticles are rapid, even exceeding sulfuric acid-ammonia rates under similar conditions. We also find that ion-induced nucleation involves IOand the sequential addition of HIOand that it proceeds at the kinetic limit below +10°C. In contrast, neutral nucleation involves the repeated sequential addition of iodous acid (HIO) followed by HIO, showing that HIOplays a key stabilizing role. Freshly formed particles are composed almost entirely of HIO, which drives rapid particle growth at the kinetic limit. Our measurements indicate that iodine oxoacid particle formation can compete with sulfuric acid in pristine regions of the atmosphere., We thank the European Organization for Nuclear Research (CERN) for supporting CLOUD with important technical and financial resources and for providing a particle beam from the CERN Proton Synchrotron. This research has received support from the Academy of Finland (projects 316114, 307331, 310682, 266388, 3282290, 306853, 296628, 229574, 333397, 326948, and 1325656); the European Research Council (projects 692891, 616075, 764991, 316662, 742206, and 714621); CSC – Finnish IT center; the EC Seventh Framework Programme and the EU H2020 programme Marie Skłodowska Curie ITN “CLOUD-TRAIN” (316662) and “CLOUD-MOTION” (764991); Austrian Science Fund (FWF) (J3951-N36 and P27295-N20); the Swiss National Science Foundation (20FI20_159851, 200021_169090, 200020_172602, and 20FI20_172622); the U.S. National Science Foundation (grants AGS1447056, AGS1439551, AGS1801574, AGS1620530, AGS1801897, AGS153128, AGS1649147, AGS1801280, AGS1602086, and AGS1801329); MSCA H2020 COFUND-FP-CERN2014 fellowship (665779); German Federal Ministry of Education and Research: CLOUD-16 (01LK1601A); Portuguese Foundation for Science and Technology (CERN/FIS-COM/0014/2017); Academy of Finland Centre of Excellence in Atmospheric Sciences (grant 272041); European Regional Development Fund (project MOBTT42); Jiangsu Collaborative Innovation Center for Climate Change; Yangtze River Delta Atmosphere and Earth System Science National Observation and Research Station; Estonian Research Council (project PRG714); Hungarian National Research, Development and Innovation Office (K116788 and K132254); NASA Graduate Fellowship (NASA-NNX16AP36H); and ACTRIS 2TNA H2020 OCTAVE (654109).

Published
2021

22. Chemical composition of nanoparticles from α-pinene nucleation and the influence of isoprene and relative humidity at low temperature

Author

Caudillo, Lucía, Rörup, Birte, Heinritzi, Martin, Marie, Guillaume, Simon, Mario, Wagner, Andrea C., Müller, Tatjana, Granzin, Manuel, Amorim, Antonio, Ataei, Farnoush, Baalbaki, Rima, Bertozzi, Barbara, Brasseur, Zoé, Chiu, Randall, Chu, Biwu, Dada, Lubna, Duplissy, Jonathan, Finkenzeller, Henning, Gonzalez Carracedo, Loïc, He, Xu-Cheng, Hofbauer, Victoria, Kong, Weimeng, Lamkaddam, Houssni, Lee, Chuan P., Lopez, Brandon, Mahfouz, Naser G. A., Makhmutov, Vladimir, Manninen, Hanna E., Marten, Ruby, Massabò, Dario, Mauldin, Roy L., Mentler, Bernhard, Molteni, Ugo, Onnela, Antti, Pfeifer, Joschka, Philippov, Maxim, Piedehierro, Ana A., Schervish, Meredith, Scholz, Wiebke, Schulze, Benjamin, Shen, Jiali, Stolzenburg, Dominik, Stozhkov, Yuri, Surdu, Mihnea, Tauber, Christian, Tham, Yee Jun, Tian, Ping, Tomé, António, Vogt, Steffen, Wang, Mingyi, Wang, Dongyu S., Weber, Stefan K., Welti, André, Yonghong, Wang, Yusheng, Wu, Zauner-Wieczorek, Marcel, Baltensperger, Urs, El Haddad, Imad, Flagan, Richard C., Hansel, Armin, Höhler, Kristina, Kirkby, Jasper, Kulmala, Markku, Lehtipalo, Katrianne, Möhler, Ottmar, Saathoff, Harald, Volkamer, Rainer, Winkler, Paul M., Donahue, Neil M., Kürten, Andreas, and Curtius, Joachim

Subjects
Atmospheric Science
Abstract

The abstract is available here: https://uscholar.univie.ac.at/o:1597268

Published
2021

23. Role of iodine oxoacids in atmospheric aerosol nucleation

Author

European Organization for Nuclear Research, Academy of Finland, European Commission, Consejo Superior de Investigaciones Científicas (España), Austrian Science Fund, Swiss National Science Foundation, National Science Foundation (US), Federal Ministry of Education and Research (Germany), Fundação para a Ciência e a Tecnologia (Portugal), Jiangsu Collaborative Innovation Center of Climate Change, Estonian Research Council, National Research, Development and Innovation Office (Hungary), National Aeronautics and Space Administration (US), He, Xu-Cheng, Tham, Yee Jun, Dada, Lubna, Wang, Mingyi, Finkenzeller, Henning, Stolzenburg, D., Iyer, S., Simon, Mario, Kürten, A., Shen, Jiali, Rörup, Birte, Volkamer, Rainer, Kirkby, Jasper, Worsnop, Douglas R., Sipilä, Mikko, Rissanen, Matti, Schobesberger, Siegfried, Baalbaki, Rima, Wang, Dongyo S., Koenig, T.K., Jokinen, Tuija, Sarnela, Nina, Beck, Lisa J., Almeida, João, Amanatidis, Stavros, Amorim, António, Ataei, F., Baccarini, Andrea, Bertozzi, Barbara, Bianchi, Federico, Brilke, Sophia, Caudillo, Lucía, Chen, Dexian, Chiu, Randall, Chu, Biwu, Dias, A., Ding, Aijun, Dommen, J., Duplissy, Jonathan, El Haddad, I., González Carracedo, Loïc, Granzin, Manuel, Hansel, A., Heinritzi, Martin, Hofbauer, Victoria, Junninen, Heikki, Kangasluoma, Juha, Kemppainen, Deniz, Kim, Changyuk, Kong, Weimeng, Krechmer, Jordan E., Kvashin, Aleksander, Laitinen, Totti, Lamkaddam, Houssni, Lee, Chuan Ping, Lehtipalo, Katrianne, Leiminger, Markus, Li, Zijun, Makhmutov, Vladimir, Manninen, Hanna E., Marie, Guillaume, Marten, Ruby, Mathot, Serge, Mauldin, Roy L., Mentler, Bernhard, Möhler, Ottmar, Müller, Tatjana, Nie, Wei, Onnela, Antti, Petäjä, Tuukka, Pfeifer, Joschka, Philippov, Maxim, Ranjithkumar, Ananth, Saiz-Lopez, A., Salma, Imre, Scholz, Wiebke, Schuchmann, S., Schulze, Benjamin, Steiner, Gerhard, Stozhkov, Yuri, Tauber, Christian, Tomé, António, Thakur, Roseline C., Väisänen, Olli, Vazquez-Pufleau, Miguel, Wagner, Andrea C., Wang, Yonghong, Weber, Stefan K., Winkler, Paul M., Wu, Yusheng, Xiao, Mao, Yan, Chao, Ye, Qing, Ylisirniö, Arttu, Zauner-Wieczorek, Marcel, Zha, Qiaozhi, Zhou, Putian, Flagan, Richard C., Curtius, Joachim, Baltensperger, Urs, Kulmala, Markku, Kerminen, Veli Matti, Kurtén, Theo, Donahue, Neil M., European Organization for Nuclear Research, Academy of Finland, European Commission, Consejo Superior de Investigaciones Científicas (España), Austrian Science Fund, Swiss National Science Foundation, National Science Foundation (US), Federal Ministry of Education and Research (Germany), Fundação para a Ciência e a Tecnologia (Portugal), Jiangsu Collaborative Innovation Center of Climate Change, Estonian Research Council, National Research, Development and Innovation Office (Hungary), National Aeronautics and Space Administration (US), He, Xu-Cheng, Tham, Yee Jun, Dada, Lubna, Wang, Mingyi, Finkenzeller, Henning, Stolzenburg, D., Iyer, S., Simon, Mario, Kürten, A., Shen, Jiali, Rörup, Birte, Volkamer, Rainer, Kirkby, Jasper, Worsnop, Douglas R., Sipilä, Mikko, Rissanen, Matti, Schobesberger, Siegfried, Baalbaki, Rima, Wang, Dongyo S., Koenig, T.K., Jokinen, Tuija, Sarnela, Nina, Beck, Lisa J., Almeida, João, Amanatidis, Stavros, Amorim, António, Ataei, F., Baccarini, Andrea, Bertozzi, Barbara, Bianchi, Federico, Brilke, Sophia, Caudillo, Lucía, Chen, Dexian, Chiu, Randall, Chu, Biwu, Dias, A., Ding, Aijun, Dommen, J., Duplissy, Jonathan, El Haddad, I., González Carracedo, Loïc, Granzin, Manuel, Hansel, A., Heinritzi, Martin, Hofbauer, Victoria, Junninen, Heikki, Kangasluoma, Juha, Kemppainen, Deniz, Kim, Changyuk, Kong, Weimeng, Krechmer, Jordan E., Kvashin, Aleksander, Laitinen, Totti, Lamkaddam, Houssni, Lee, Chuan Ping, Lehtipalo, Katrianne, Leiminger, Markus, Li, Zijun, Makhmutov, Vladimir, Manninen, Hanna E., Marie, Guillaume, Marten, Ruby, Mathot, Serge, Mauldin, Roy L., Mentler, Bernhard, Möhler, Ottmar, Müller, Tatjana, Nie, Wei, Onnela, Antti, Petäjä, Tuukka, Pfeifer, Joschka, Philippov, Maxim, Ranjithkumar, Ananth, Saiz-Lopez, A., Salma, Imre, Scholz, Wiebke, Schuchmann, S., Schulze, Benjamin, Steiner, Gerhard, Stozhkov, Yuri, Tauber, Christian, Tomé, António, Thakur, Roseline C., Väisänen, Olli, Vazquez-Pufleau, Miguel, Wagner, Andrea C., Wang, Yonghong, Weber, Stefan K., Winkler, Paul M., Wu, Yusheng, Xiao, Mao, Yan, Chao, Ye, Qing, Ylisirniö, Arttu, Zauner-Wieczorek, Marcel, Zha, Qiaozhi, Zhou, Putian, Flagan, Richard C., Curtius, Joachim, Baltensperger, Urs, Kulmala, Markku, Kerminen, Veli Matti, Kurtén, Theo, and Donahue, Neil M.

Abstract

Iodic acid (HIO) is known to form aerosol particles in coastal marine regions, but predicted nucleation and growth rates are lacking. Using the CERN CLOUD (Cosmics Leaving Outdoor Droplets) chamber, we find that the nucleation rates of HIOparticles are rapid, even exceeding sulfuric acid-ammonia rates under similar conditions. We also find that ion-induced nucleation involves IOand the sequential addition of HIOand that it proceeds at the kinetic limit below +10°C. In contrast, neutral nucleation involves the repeated sequential addition of iodous acid (HIO) followed by HIO, showing that HIOplays a key stabilizing role. Freshly formed particles are composed almost entirely of HIO, which drives rapid particle growth at the kinetic limit. Our measurements indicate that iodine oxoacid particle formation can compete with sulfuric acid in pristine regions of the atmosphere.

Published
2021

24. Molecular understanding of new-particle formation from α-pinene between −50 and +25 °C

Author

Simon, Mario, Dada, Lubna, Heinritzi, Martin, Scholz, Wiebke, Stolzenburg, Dominik, Fischer, Lukas, Wagner, Andrea C., Kürten, Andreas, Rörup, Birte, He, Xu-Cheng, Almeida, João, Baalbaki, Rima, Baccarini, Andrea, Bauer, Paulus S., Beck, Lisa, Bergen, Anton, Bianchi, Federico, Bräkling, Steffen, Brilke, Sophia, Caudillo, Lucia, Chen, Dexian, Chu, Biwu, Dias, António, Draper, Danielle C., Duplissy, Jonathan, El-Haddad, Imad, Finkenzeller, Henning, Frege, Carla, Gonzalez-Carracedo, Loic, Gordon, Hamish, Granzin, Manuel, Hakala, Jani, Hofbauer, Victoria, Hoyle, Christopher R., Kim, Changhyuk, Kong, Weimeng, Lamkaddam, Houssni, Lee, Chuan P., Lehtipalo, Katrianne, Leiminger, Markus, Mai, Huajun, Manninen, Hanna E., Marie, Guillaume, Marten, Ruby, Mentler, Bernhard, Molteni, Ugo, Nichman, Leonid, Nie, Wei, Ojdanic, Andrea, Onnela, Antti, Partoll, Eva, Petäjä, Tuukka, Pfeifer, Joschka, Philippov, Maxim, Quéléver, Lauriane L. J., Ranjithkumar, Ananth, Rissanen, Matti P., Schallhart, Simon, Schobesberger, Siegfried, Schuchmann, Simone, Shen, Jiali, Sipilä, Mikko, Steiner, Gerhard, Stozhkov, Yuri, Tauber, Christian, Tham, Yee J., Tomé, António R., Vazquez-Pufleau, Miguel, Vogel, Alexander L., Wagner, Robert, Wang, Mingyi, Wang, Dongyu S., Wang, Yonghong, Weber, Stefan K., Wu, Yusheng, Xiao, Mao, Yan, Chao, Ye, Penglin, Ye, Qing, Zauner-Wieczorek, Marcel, Zhou, Xueqin, Baltensperger, Urs, Dommen, Josef, Flagan, Richard C., Hansel, Armin, Kulmala, Markku, Volkamer, Rainer, Winkler, Paul M., Worsnop, Douglas R., Donahue, Neil M., Kirkby, Jasper, Curtius, Joachim, Tampere University, and Physics

Subjects
Atmospheric Science, 114 Physical sciences
Abstract

Highly oxygenated organic molecules (HOMs) contribute substantially to the formation and growth of atmospheric aerosol particles, which affect air quality, human health and Earth s climate. HOMs are formed by rapid, gasphase autoxidation of volatile organic compounds (VOCs) such as -pinene, the most abundant monoterpene in the atmosphere. Due to their abundance and low volatility, HOMs can play an important role in new-particle formation (NPF) and the early growth of atmospheric aerosols, even without any further assistance of other low-volatility compounds such as sulfuric acid. Both the autoxidation reaction forming HOMs and their NPF rates are expected to be strongly dependent on temperature. However, experimental data on both effects are limited. Dedicated experiments were performed at the CLOUD (Cosmics Leaving OUtdoor Droplets) chamber at CERN to address this question. In this study, we show that a decrease in temperature (from C25 to 50 C) results in a reduced HOM yield and reduced oxidation state of the products, whereas the NPF rates (J1:7 nm) increase substantially. Measurements with two different chemical ionization mass spectrometers (using nitrate and protonated water as reagent ion, respectively) provide the molecular composition of the gaseous oxidation products, and a two-dimensional volatility basis set (2D VBS) model provides their volatility distribution. The HOM yield decreases with temperature from 6.2% at 25 C to 0.7% at 50 C. However, there is a strong reduction of the saturation vapor pressure of each oxidation state as the temperature is reduced. Overall, the reduction in volatility with temperature leads to an increase in the nucleation rates by up to 3 orders of magnitude at 50 C compared with 25 C. In addition, the enhancement of the nucleation rates by ions decreases with decreasing temperature, since the neutral molecular clusters have increased stability against evaporation. The resulting data quantify how the interplay between the temperature-dependent oxidation pathways and the associated vapor pressures affect biogenic NPF at the molecular level. Our measurements, therefore, improve our understanding of pure biogenic NPF for a wide range of tropospheric temperatures and precursor concentrations. publishedVersion

Published
2020

25. Molecular understanding of new-particle formation from alpha-pinene between - 50 and + 25 degrees C

Author

Simon, Mario, Dada, Lubna, Heinritzi, Martin, Scholz, Wiebke, Stolzenburg, Dominik, Fischer, Lukas, Wagner, Andrea C., Kuerten, Andreas, Rorup, Birte, He, Xu-Cheng, Almeida, Joao, Baalbaki, Rima, Baccarini, Andrea, Bauer, Paulus S., Beck, Lisa, Bergen, Anton, Bianchi, Federico, Brakling, Steffen, Brilke, Sophia, Caudillo, Lucia, Chen, Dexian, Chu, Biwu, Dias, Antonio, Draper, Danielle C., Duplissy, Jonathan, El-Haddad, Imad, Finkenzeller, Henning, Frege, Carla, Gonzalez-Carracedo, Loic, Gordon, Hamish, Granzin, Manuel, Hakala, Jani, Hofbauer, Victoria, Hoyle, Christopher R., Kim, Changhyuk, Kong, Weimeng, Lamkaddam, Houssni, Lee, Chuan P., Lehtipalo, Katrianne, Leiminger, Markus, Mai, Huajun, Manninen, Hanna E., Marie, Guillaume, Marten, Ruby, Mentler, Bernhard, Molteni, Ugo, Nichman, Leonid, Nie, Wei, Ojdanic, Andrea, Onnela, Antti, Partoll, Eva, Petäjä, Tuukka, Pfeifer, Joschka, Philippov, Maxim, Quelever, Lauriane L. J., Ranjithkumar, Ananth, Rissanen, Matti P., Schallhart, Simon, Schobesberger, Siegfried, Schuchmann, Simone, Shen, Jiali, Sipila, Mikko, Steiner, Gerhard, Stozhkov, Yuri, Tauber, Christian, Tham, Yee J., Tome, Antonio R., Vazquez-Pufleau, Miguel, Vogel, Alexander L., Wagner, Robert, Wang, Mingyi, Wang, Dongyu S., Wang, Yonghong, Weber, Stefan K., Wu, Yusheng, Xiao, Mao, Yan, Chao, Ye, Penglin, Ye, Qing, Zauner-Wieczorek, Marcel, Zhou, Xueqin, Baltensperger, Urs, Dommen, Josef, Flagan, Richard C., Hansel, Armin, Kulmala, Markku, Volkamer, Rainer, Winkler, Paul M., Worsnop, Douglas R., Donahue, Neil M., Kirkby, Jasper, Curtius, Joachim, Air quality research group, Institute for Atmospheric and Earth System Research (INAR), Polar and arctic atmospheric research (PANDA), Helsinki Institute of Physics, and Department of Physics

Subjects
114 Physical sciences
Abstract

Highly oxygenated organic molecules (HOMs) contribute substantially to the formation and growth of atmospheric aerosol particles, which affect air quality, human health and Earth's climate. HOMs are formed by rapid, gas-phase autoxidation of volatile organic compounds (VOCs) such as alpha-pinene, the most abundant monoterpene in the atmosphere. Due to their abundance and low volatility, HOMs can play an important role in new-particle formation (NPF) and the early growth of atmospheric aerosols, even without any further assistance of other low-volatility compounds such as sulfuric acid. Both the autoxidation reaction forming HOMs and their NPF rates are expected to be strongly dependent on temperature. However, experimental data on both effects are limited. Dedicated experiments were performed at the CLOUD (Cosmics Leaving OUtdoor Droplets) chamber at CERN to address this question. In this study, we show that a decrease in temperature (from + 25 to -50 degrees C) results in a reduced HOM yield and reduced oxidation state of the products, whereas the NPF rates (J(1.7) (nm)) increase substantially. Measurements with two different chemical ionization mass spectrometers (using nitrate and protonated water as reagent ion, respectively) provide the molecular composition of the gaseous oxidation products, and a two-dimensional volatility basis set (2D VBS) model provides their volatility distribution. The HOM yield decreases with temperature from 6.2 % at 25 degrees C to 0.7 % at -50 degrees C. However, there is a strong reduction of the saturation vapor pressure of each oxidation state as the temperature is reduced. Overall, the reduction in volatility with temperature leads to an increase in the nucleation rates by up to 3 orders of magnitude at -50 degrees C compared with 25 degrees C. In addition, the enhancement of the nucleation rates by ions decreases with decreasing temperature, since the neutral molecular clusters have increased stability against evaporation. The resulting data quantify how the interplay between the temperature-dependent oxidation pathways and the associated vapor pressures affect biogenic NPF at the molecular level. Our measurements, therefore, improve our understanding of pure biogenic NPF for a wide range of tropospheric temperatures and precursor concentrations.

Published
2020

26. Data Acquisition System of the CLOUD Experiment at CERN

Author

Weber, Stefan K., primary, Miotto, Giovanna Lehmann, additional, Almeida, Joao, additional, Blanc, Pascal Herve, additional, Dias, Antonio, additional, Malaguti, Giulio, additional, Manninen, Hanna E., additional, Pfeifer, Joschka, additional, Ravat, Sylvain, additional, Onnela, Antti, additional, Mathot, Serge, additional, Kirkby, Jasper, additional, Tome, Antonio, additional, and Amorim, Antonio, additional

Published
2021
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27. Molecular understanding of new-particle formation from <i>α</i>-pinene between −50 and +25 °C

Author

Simon, Mario, primary, Dada, Lubna, additional, Heinritzi, Martin, additional, Scholz, Wiebke, additional, Stolzenburg, Dominik, additional, Fischer, Lukas, additional, Wagner, Andrea C., additional, Kürten, Andreas, additional, Rörup, Birte, additional, He, Xu-Cheng, additional, Almeida, João, additional, Baalbaki, Rima, additional, Baccarini, Andrea, additional, Bauer, Paulus S., additional, Beck, Lisa, additional, Bergen, Anton, additional, Bianchi, Federico, additional, Bräkling, Steffen, additional, Brilke, Sophia, additional, Caudillo, Lucia, additional, Chen, Dexian, additional, Chu, Biwu, additional, Dias, António, additional, Draper, Danielle C., additional, Duplissy, Jonathan, additional, El-Haddad, Imad, additional, Finkenzeller, Henning, additional, Frege, Carla, additional, Gonzalez-Carracedo, Loic, additional, Gordon, Hamish, additional, Granzin, Manuel, additional, Hakala, Jani, additional, Hofbauer, Victoria, additional, Hoyle, Christopher R., additional, Kim, Changhyuk, additional, Kong, Weimeng, additional, Lamkaddam, Houssni, additional, Lee, Chuan P., additional, Lehtipalo, Katrianne, additional, Leiminger, Markus, additional, Mai, Huajun, additional, Manninen, Hanna E., additional, Marie, Guillaume, additional, Marten, Ruby, additional, Mentler, Bernhard, additional, Molteni, Ugo, additional, Nichman, Leonid, additional, Nie, Wei, additional, Ojdanic, Andrea, additional, Onnela, Antti, additional, Partoll, Eva, additional, Petäjä, Tuukka, additional, Pfeifer, Joschka, additional, Philippov, Maxim, additional, Quéléver, Lauriane L. J., additional, Ranjithkumar, Ananth, additional, Rissanen, Matti P., additional, Schallhart, Simon, additional, Schobesberger, Siegfried, additional, Schuchmann, Simone, additional, Shen, Jiali, additional, Sipilä, Mikko, additional, Steiner, Gerhard, additional, Stozhkov, Yuri, additional, Tauber, Christian, additional, Tham, Yee J., additional, Tomé, António R., additional, Vazquez-Pufleau, Miguel, additional, Vogel, Alexander L., additional, Wagner, Robert, additional, Wang, Mingyi, additional, Wang, Dongyu S., additional, Wang, Yonghong, additional, Weber, Stefan K., additional, Wu, Yusheng, additional, Xiao, Mao, additional, Yan, Chao, additional, Ye, Penglin, additional, Ye, Qing, additional, Zauner-Wieczorek, Marcel, additional, Zhou, Xueqin, additional, Baltensperger, Urs, additional, Dommen, Josef, additional, Flagan, Richard C., additional, Hansel, Armin, additional, Kulmala, Markku, additional, Volkamer, Rainer, additional, Winkler, Paul M., additional, Worsnop, Douglas R., additional, Donahue, Neil M., additional, Kirkby, Jasper, additional, and Curtius, Joachim, additional

Published
2020
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28. Enhanced growth rate of atmospheric particles from sulfuric acid

Author

Stolzenburg, Dominik, primary, Simon, Mario, additional, Ranjithkumar, Ananth, additional, Kürten, Andreas, additional, Lehtipalo, Katrianne, additional, Gordon, Hamish, additional, Ehrhart, Sebastian, additional, Finkenzeller, Henning, additional, Pichelstorfer, Lukas, additional, Nieminen, Tuomo, additional, He, Xu-Cheng, additional, Brilke, Sophia, additional, Xiao, Mao, additional, Amorim, António, additional, Baalbaki, Rima, additional, Baccarini, Andrea, additional, Beck, Lisa, additional, Bräkling, Steffen, additional, Caudillo Murillo, Lucía, additional, Chen, Dexian, additional, Chu, Biwu, additional, Dada, Lubna, additional, Dias, António, additional, Dommen, Josef, additional, Duplissy, Jonathan, additional, El Haddad, Imad, additional, Fischer, Lukas, additional, Gonzalez Carracedo, Loic, additional, Heinritzi, Martin, additional, Kim, Changhyuk, additional, Koenig, Theodore K., additional, Kong, Weimeng, additional, Lamkaddam, Houssni, additional, Lee, Chuan Ping, additional, Leiminger, Markus, additional, Li, Zijun, additional, Makhmutov, Vladimir, additional, Manninen, Hanna E., additional, Marie, Guillaume, additional, Marten, Ruby, additional, Müller, Tatjana, additional, Nie, Wei, additional, Partoll, Eva, additional, Petäjä, Tuukka, additional, Pfeifer, Joschka, additional, Philippov, Maxim, additional, Rissanen, Matti P., additional, Rörup, Birte, additional, Schobesberger, Siegfried, additional, Schuchmann, Simone, additional, Shen, Jiali, additional, Sipilä, Mikko, additional, Steiner, Gerhard, additional, Stozhkov, Yuri, additional, Tauber, Christian, additional, Tham, Yee Jun, additional, Tomé, António, additional, Vazquez-Pufleau, Miguel, additional, Wagner, Andrea C., additional, Wang, Mingyi, additional, Wang, Yonghong, additional, Weber, Stefan K., additional, Wimmer, Daniela, additional, Wlasits, Peter J., additional, Wu, Yusheng, additional, Ye, Qing, additional, Zauner-Wieczorek, Marcel, additional, Baltensperger, Urs, additional, Carslaw, Kenneth S., additional, Curtius, Joachim, additional, Donahue, Neil M., additional, Flagan, Richard C., additional, Hansel, Armin, additional, Kulmala, Markku, additional, Lelieveld, Jos, additional, Volkamer, Rainer, additional, Kirkby, Jasper, additional, and Winkler, Paul M., additional

Published
2020
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29. Molecular understanding of new-particle formation from alpha-pinene between −50 °C and 25 °C

Author

Simon, Mario, primary, Dada, Lubna, additional, Heinritzi, Martin, additional, Scholz, Wiebke, additional, Stolzenburg, Dominik, additional, Fischer, Lukas, additional, Wagner, Andrea C., additional, Kürten, Andreas, additional, Rörup, Birte, additional, He, Xu-Cheng, additional, Almeida, João, additional, Baalbaki, Rima, additional, Baccarini, Andrea, additional, Bauer, Paulus S., additional, Beck, Lisa, additional, Bergen, Anton, additional, Bianchi, Federico, additional, Bräkling, Steffen, additional, Brilke, Sophia, additional, Caudillo, Lucia, additional, Chen, Dexian, additional, Chu, Biwu, additional, Dias, António, additional, Draper, Danielle C., additional, Duplissy, Jonathan, additional, El Haddad, Imad, additional, Finkenzeller, Henning, additional, Frege, Carla, additional, Gonzalez-Carracedo, Loic, additional, Gordon, Hamish, additional, Granzin, Manuel, additional, Hakala, Jani, additional, Hofbauer, Victoria, additional, Hoyle, Christopher R., additional, Kim, Changhyuk, additional, Kong, Weimeng, additional, Lamkaddam, Houssni, additional, Lee, Chuan P., additional, Lehtipalo, Katrianne, additional, Leiminger, Markus, additional, Mai, Huajun, additional, Manninen, Hanna E., additional, Marie, Guillaume, additional, Marten, Ruby, additional, Mentler, Bernhard, additional, Molteni, Ugo, additional, Nichman, Leonid, additional, Nie, Wei, additional, Ojdanic, Andrea, additional, Onnela, Antti, additional, Partoll, Eva, additional, Petäjä, Tuukka, additional, Pfeifer, Joschka, additional, Philippov, Maxim, additional, Quéléver, Lauriane L. J., additional, Ranjithkumar, Ananth, additional, Rissanen, Matti, additional, Schallhart, Simon, additional, Schobesberger, Siegfried, additional, Schuchmann, Simone, additional, Shen, Jiali, additional, Sipilä, Mikko, additional, Steiner, Gerhard, additional, Stozhkov, Yuri, additional, Tauber, Christian, additional, Tham, Yee J., additional, Tomé, António R., additional, Vazquez-Pufleau, Miguel, additional, Vogel, Alexander, additional, Wagner, Robert, additional, Wang, Mingyi, additional, Wang, Dongyu S., additional, Wang, Yonghong, additional, Weber, Stefan K., additional, Wu, Yusheng, additional, Xiao, Mao, additional, Yan, Chao, additional, Ye, Penglin, additional, Ye, Qing, additional, Zauner-Wieczorek, Marcel, additional, Zhou, Xueqin, additional, Baltensperger, Urs, additional, Dommen, Josef, additional, Flagan, Rick C., additional, Hansel, Armin, additional, Kulmala, Markku, additional, Volkamer, Rainer, additional, Winkler, Paul M., additional, Worsnop, Douglas R., additional, Donahue, Neil M., additional, Kirkby, Jasper, additional, and Curtius, Joachim, additional

Published
2020
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30. Supplementary material to "Molecular understanding of new-particle formation from alpha-pinene between −50 °C and 25 °C"

Author

Simon, Mario, primary, Dada, Lubna, additional, Heinritzi, Martin, additional, Scholz, Wiebke, additional, Stolzenburg, Dominik, additional, Fischer, Lukas, additional, Wagner, Andrea C., additional, Kürten, Andreas, additional, Rörup, Birte, additional, He, Xu-Cheng, additional, Almeida, João, additional, Baalbaki, Rima, additional, Baccarini, Andrea, additional, Bauer, Paulus S., additional, Beck, Lisa, additional, Bergen, Anton, additional, Bianchi, Federico, additional, Bräkling, Steffen, additional, Brilke, Sophia, additional, Caudillo, Lucia, additional, Chen, Dexian, additional, Chu, Biwu, additional, Dias, António, additional, Draper, Danielle C., additional, Duplissy, Jonathan, additional, El Haddad, Imad, additional, Finkenzeller, Henning, additional, Frege, Carla, additional, Gonzalez-Carracedo, Loic, additional, Gordon, Hamish, additional, Granzin, Manuel, additional, Hakala, Jani, additional, Hofbauer, Victoria, additional, Hoyle, Christopher R., additional, Kim, Changhyuk, additional, Kong, Weimeng, additional, Lamkaddam, Houssni, additional, Lee, Chuan P., additional, Lehtipalo, Katrianne, additional, Leiminger, Markus, additional, Mai, Huajun, additional, Manninen, Hanna E., additional, Marie, Guillaume, additional, Marten, Ruby, additional, Mentler, Bernhard, additional, Molteni, Ugo, additional, Nichman, Leonid, additional, Nie, Wei, additional, Ojdanic, Andrea, additional, Onnela, Antti, additional, Partoll, Eva, additional, Petäjä, Tuukka, additional, Pfeifer, Joschka, additional, Philippov, Maxim, additional, Quéléver, Lauriane L. J., additional, Ranjithkumar, Ananth, additional, Rissanen, Matti, additional, Schallhart, Simon, additional, Schobesberger, Siegfried, additional, Schuchmann, Simone, additional, Shen, Jiali, additional, Sipilä, Mikko, additional, Steiner, Gerhard, additional, Stozhkov, Yuri, additional, Tauber, Christian, additional, Tham, Yee J., additional, Tomé, António R., additional, Vazquez-Pufleau, Miguel, additional, Vogel, Alexander, additional, Wagner, Robert, additional, Wang, Mingyi, additional, Wang, Dongyu S., additional, Wang, Yonghong, additional, Weber, Stefan K., additional, Wu, Yusheng, additional, Xiao, Mao, additional, Yan, Chao, additional, Ye, Penglin, additional, Ye, Qing, additional, Zauner-Wieczorek, Marcel, additional, Zhou, Xueqin, additional, Baltensperger, Urs, additional, Dommen, Josef, additional, Flagan, Rick C., additional, Hansel, Armin, additional, Kulmala, Markku, additional, Volkamer, Rainer, additional, Winkler, Paul M., additional, Worsnop, Douglas R., additional, Donahue, Neil M., additional, Kirkby, Jasper, additional, and Curtius, Joachim, additional

Published
2020
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31. Synergistic HNO3–H2SO4–NH3upper tropospheric particle formation

Author

Wang, Mingyi, Xiao, Mao, Bertozzi, Barbara, Marie, Guillaume, Rörup, Birte, Schulze, Benjamin, Bardakov, Roman, He, Xu-Cheng, Shen, Jiali, Scholz, Wiebke, Marten, Ruby, Dada, Lubna, Baalbaki, Rima, Lopez, Brandon, Lamkaddam, Houssni, Manninen, Hanna E., Amorim, António, Ataei, Farnoush, Bogert, Pia, Brasseur, Zoé, Caudillo, Lucía, De Menezes, Louis-Philippe, Duplissy, Jonathan, Ekman, Annica M. L., Finkenzeller, Henning, Carracedo, Loïc Gonzalez, Granzin, Manuel, Guida, Roberto, Heinritzi, Martin, Hofbauer, Victoria, Höhler, Kristina, Korhonen, Kimmo, Krechmer, Jordan E., Kürten, Andreas, Lehtipalo, Katrianne, Mahfouz, Naser G. A., Makhmutov, Vladimir, Massabò, Dario, Mathot, Serge, Mauldin, Roy L., Mentler, Bernhard, Müller, Tatjana, Onnela, Antti, Petäjä, Tuukka, Philippov, Maxim, Piedehierro, Ana A., Pozzer, Andrea, Ranjithkumar, Ananth, Schervish, Meredith, Schobesberger, Siegfried, Simon, Mario, Stozhkov, Yuri, Tomé, António, Umo, Nsikanabasi Silas, Vogel, Franziska, Wagner, Robert, Wang, Dongyu S., Weber, Stefan K., Welti, André, Wu, Yusheng, Zauner-Wieczorek, Marcel, Sipilä, Mikko, Winkler, Paul M., Hansel, Armin, Baltensperger, Urs, Kulmala, Markku, Flagan, Richard C., Curtius, Joachim, Riipinen, Ilona, Gordon, Hamish, Lelieveld, Jos, El-Haddad, Imad, Volkamer, Rainer, Worsnop, Douglas R., Christoudias, Theodoros, Kirkby, Jasper, Möhler, Ottmar, and Donahue, Neil M.

Abstract

New particle formation in the upper free troposphere is a major global source of cloud condensation nuclei (CCN)1–4. However, the precursor vapours that drive the process are not well understood. With experiments performed under upper tropospheric conditions in the CERN CLOUD chamber, we show that nitric acid, sulfuric acid and ammonia form particles synergistically, at rates that are orders of magnitude faster than those from any two of the three components. The importance of this mechanism depends on the availability of ammonia, which was previously thought to be efficiently scavenged by cloud droplets during convection. However, surprisingly high concentrations of ammonia and ammonium nitrate have recently been observed in the upper troposphere over the Asian monsoon region5,6. Once particles have formed, co-condensation of ammonia and abundant nitric acid alone is sufficient to drive rapid growth to CCN sizes with only trace sulfate. Moreover, our measurements show that these CCN are also highly efficient ice nucleating particles—comparable to desert dust. Our model simulations confirm that ammonia is efficiently convected aloft during the Asian monsoon, driving rapid, multi-acid HNO3–H2SO4–NH3nucleation in the upper troposphere and producing ice nucleating particles that spread across the mid-latitude Northern Hemisphere.

Published
2022
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32. Enhanced growth rate of atmospheric particles from sulfuric acid

Author

Stolzenburg, Dominik, primary, Simon, Mario, additional, Ranjithkumar, Ananth, additional, Kürten, Andreas, additional, Lehtipalo, Katrianne, additional, Gordon, Hamish, additional, Nieminen, Tuomo, additional, Pichelstorfer, Lukas, additional, He, Xu-Cheng, additional, Brilke, Sophia, additional, Xiao, Mao, additional, Amorim, António, additional, Baalbaki, Rima, additional, Baccarini, Andrea, additional, Beck, Lisa, additional, Bräkling, Steffen, additional, Caudillo Murillo, Lucía, additional, Chen, Dexian, additional, Chu, Biwu, additional, Dada, Lubna, additional, Dias, António, additional, Dommen, Josef, additional, Duplissy, Jonathan, additional, El Haddad, Imad, additional, Finkenzeller, Henning, additional, Fischer, Lukas, additional, Gonzalez Carracedo, Loic, additional, Heinritzi, Martin, additional, Kim, Changhyuk, additional, Koenig, Theodore K., additional, Kong, Weimeng, additional, Lamkaddam, Houssni, additional, Lee, Chuan Ping, additional, Leiminger, Markus, additional, Li, Zijun, additional, Makhmutov, Vladimir, additional, Manninen, Hanna E., additional, Marie, Guillaume, additional, Marten, Ruby, additional, Müller, Tatjana, additional, Nie, Wei, additional, Partoll, Eva, additional, Petäjä, Tuukka, additional, Pfeifer, Joschka, additional, Philippov, Maxim, additional, Rissanen, Matti P., additional, Rörup, Birte, additional, Schobesberger, Siegfried, additional, Schuchmann, Simone, additional, Shen, Jiali, additional, Sipilä, Mikko, additional, Steiner, Gerhard, additional, Stozhkov, Yuri, additional, Tauber, Christian, additional, Tham, Yee Jun, additional, Tomé, António, additional, Vazquez-Pufleau, Miguel, additional, Wagner, Andrea C., additional, Wang, Mingyi, additional, Wang, Yonghong, additional, Weber, Stefan K., additional, Wimmer, Daniela, additional, Wlasits, Peter J., additional, Wu, Yusheng, additional, Ye, Qing, additional, Zauner-Wieczorek, Marcel, additional, Baltensperger, Urs, additional, Carslaw, Kenneth S., additional, Curtius, Joachim, additional, Donahue, Neil M., additional, Flagan, Richard C., additional, Hansel, Armin, additional, Kulmala, Markku, additional, Volkamer, Rainer, additional, Kirkby, Jasper, additional, and Winkler, Paul M., additional

Published
2019
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33. Supplementary material to "Enhanced growth rate of atmospheric particles from sulfuric acid"

Author

Stolzenburg, Dominik, primary, Simon, Mario, additional, Ranjithkumar, Ananth, additional, Kürten, Andreas, additional, Lehtipalo, Katrianne, additional, Gordon, Hamish, additional, Nieminen, Tuomo, additional, Pichelstorfer, Lukas, additional, He, Xu-Cheng, additional, Brilke, Sophia, additional, Xiao, Mao, additional, Amorim, António, additional, Baalbaki, Rima, additional, Baccarini, Andrea, additional, Beck, Lisa, additional, Bräkling, Steffen, additional, Caudillo Murillo, Lucía, additional, Chen, Dexian, additional, Chu, Biwu, additional, Dada, Lubna, additional, Dias, António, additional, Dommen, Josef, additional, Duplissy, Jonathan, additional, El Haddad, Imad, additional, Finkenzeller, Henning, additional, Fischer, Lukas, additional, Gonzalez Carracedo, Loic, additional, Heinritzi, Martin, additional, Kim, Changhyuk, additional, Koenig, Theodore K., additional, Kong, Weimeng, additional, Lamkaddam, Houssni, additional, Lee, Chuan Ping, additional, Leiminger, Markus, additional, Li, Zijun, additional, Makhmutov, Vladimir, additional, Manninen, Hanna E., additional, Marie, Guillaume, additional, Marten, Ruby, additional, Müller, Tatjana, additional, Nie, Wei, additional, Partoll, Eva, additional, Petäjä, Tuukka, additional, Pfeifer, Joschka, additional, Philippov, Maxim, additional, Rissanen, Matti P., additional, Rörup, Birte, additional, Schobesberger, Siegfried, additional, Schuchmann, Simone, additional, Shen, Jiali, additional, Sipilä, Mikko, additional, Steiner, Gerhard, additional, Stozhkov, Yuri, additional, Tauber, Christian, additional, Tham, Yee Jun, additional, Tomé, António, additional, Vazquez-Pufleau, Miguel, additional, Wagner, Andrea C., additional, Wang, Mingyi, additional, Wang, Yonghong, additional, Weber, Stefan K., additional, Wimmer, Daniela, additional, Wlasits, Peter J., additional, Wu, Yusheng, additional, Ye, Qing, additional, Zauner-Wieczorek, Marcel, additional, Baltensperger, Urs, additional, Carslaw, Kenneth S., additional, Curtius, Joachim, additional, Donahue, Neil M., additional, Flagan, Richard C., additional, Hansel, Armin, additional, Kulmala, Markku, additional, Volkamer, Rainer, additional, Kirkby, Jasper, additional, and Winkler, Paul M., additional

Published
2019
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34. Chemical composition of nanoparticles from ��-pinene nucleation and the influence of isoprene and relative humidity at low temperature

Author

Caudillo, Luc��a, R��rup, Birte, Heinritzi, Martin, Marie, Guillaume, Simon, Mario, Wagner, Andrea C., M��ller, Tatjana, Granzin, Manuel, Amorim, Antonio, Ataei, Farnoush, Baalbaki, Rima, Bertozzi, Barbara, Brasseur, Zo��, Chiu, Randall, Chu, Biwu, Dada, Lubna, Duplissy, Jonathan, Finkenzeller, Henning, Gonzalez Carracedo, Lo��c, He, Xu-Cheng, Hofbauer, Victoria, Kong, Weimeng, Lamkaddam, Houssni, Lee, Chuan P., Lopez, Brandon, Mahfouz, Naser G. A., Makhmutov, Vladimir, Manninen, Hanna E., Marten, Ruby, Massab��, Dario, Mauldin, Roy L., Mentler, Bernhard, Molteni, Ugo, Onnela, Antti, Pfeifer, Joschka, Philippov, Maxim, Piedehierro, Ana A., Schervish, Meredith, Scholz, Wiebke, Schulze, Benjamin, Shen, Jiali, Stolzenburg, Dominik, Stozhkov, Yuri, Surdu, Mihnea, Tauber, Christian, Tham, Yee Jun, Tian, Ping, Tom��, Ant��nio, Vogt, Steffen, Wang, Mingyi, Wang, Dongyu S., Weber, Stefan K., Welti, Andr��, Yonghong, Wang, Yusheng, Wu, Zauner-Wieczorek, Marcel, Baltensperger, Urs, El Haddad, Imad, Flagan, Richard C., Hansel, Armin, H��hler, Kristina, Kirkby, Jasper, Kulmala, Markku, Lehtipalo, Katrianne, M��hler, Ottmar, Saathoff, Harald, Volkamer, Rainer, Winkler, Paul M., Donahue, Neil M., K��rten, Andreas, and Curtius, Joachim

Subjects
13. Climate action
Abstract

Biogenic organic precursors play an important role in atmospheric new particle formation (NPF). One of the major precursor species is ��-pinene, which upon oxidation can form a suite of products covering a wide range of volatilities. Highly oxygenated organic molecules (HOMs) comprise a fraction of the oxidation products formed. While it is known that HOMs contribute to secondary organic aerosol (SOA) formation, including NPF, they have not been well studied in newly formed particles due to their very low mass concentrations. Here we present gas- and particle-phase chemical composition data from experimental studies of ��-pinene oxidation, including in the presence of isoprene, at temperatures (���50 and ���30 ���C) and relative humidities (20 % and 60 %)relevant in the upper free troposphere. The measurements took place at the CERN Cosmics Leaving Outdoor Droplets (CLOUD) chamber. The particle chemical composition was analyzed by a thermal desorption differential mobility analyzer (TD-DMA) coupled to a nitrate chemical ionization���atmospheric pressure interface���time-of-flight (CI-APi-TOF) mass spectrometer. CI-APi-TOF was used for particle- and gas-phase measurements, applying the same ionization and detection scheme. Our measurements revealed the presence of C8���10 monomers and C18���20 dimers as the major compounds in the particles (diameter up to ���100 nm). Particularly, for the system with isoprene added, C5 (C5H10O5���7) and C15 compounds (C15H24O5���10) were detected. This observation is consistent with the previously observed formation of such compounds in the gas phase. However, although the C5 and C15 compounds do not easily nucleate, our measurements indicate that they can still contribute to the particle growth at free tropospheric conditions. For the experiments reported here, most likely isoprene oxidation products enhance the growth of particles larger than 15 nm. Additionally, we report on the nucleation rates measured at 1.7 nm (J1.7 nm) and compared with previous studies, we found lower J1.7 nm values, very likely due to the higher ��-pinene and ozone mixing ratios used in the present study.

35. Synergistic particle formation in the upper troposphere by nitric acid, sulfuric acid and ammonia

Author

Wang, Mingyi, Xiao, Mao, Bertozzi, Barbara, Marie, Guillaume, Rörup, Birte, Schulze, Benjamin, Bardakov, Roman, He, Xu-Cheng, Shen, Jiali, Scholz, Wiebke, Marten, Ruby, Dada, Lubna, Baalbaki, Rima, Lopez, Brandon, Lamkaddam, Houssni, Manninen, Hanna E., Amorim, António, Ataei, Farnoush, Bogert, Pia, Brasseur, Zoé, Caudillo, Lucı́a, De Menezes, Louis-Philippe, Duplissy, Jonathan, Ekman, Annica M. L., Finkenzeller, Henning, Gonzalez Carracedo, Loı̈c, Granzin, Manuel, Guida, Roberto, Heinritzi, Martin, Hofbauer, Victoria, Höhler, Kristina, Krechmer, Jordan E., Kürten, Andreas, Lehtipalo, Katrianne, Mahfouz, Naser G. A., Makhmutov, Vladimir, Massabò, Dario, Mathot, Serge, Mauldin, Roy L., Mentler, Bernhard, Müller, Tatjana, Onnela, Antti, Philippov, Maxim, Piedehierro, Ana A., Pozzer, Andrea, Ranjithkumar, Ananth, Schervish, Meredith, Simon, Mario, Stozhkov, Yuri, Tomé, António, Umo, Nsikanabasi Silas, Vogel, Franziska, Wagner, Robert, Wang, Dongyu S., Weber, Stefan K., Welti, André, Wu, Yusheng, Zauner-Wieczorek, Marcel, Sipilä, Mikko, Winkler, Paul M., Hansel, Armin, Baltensperger, Urs, Kulmala, Markku, Flagan, Richard C., Curtius, Joachim, Volkamer, Rainer, Riipinen, Ilona, Gordon, Hamish, Lelieveld, Jos, El-Haddad, Imad, Worsnop, Douglas R., Christoudias, Theodoros, Kirkby, Jasper, Möhler, Ottmar, Donahue, Neil M., Wang, Mingyi, Xiao, Mao, Bertozzi, Barbara, Marie, Guillaume, Rörup, Birte, Schulze, Benjamin, Bardakov, Roman, He, Xu-Cheng, Shen, Jiali, Scholz, Wiebke, Marten, Ruby, Dada, Lubna, Baalbaki, Rima, Lopez, Brandon, Lamkaddam, Houssni, Manninen, Hanna E., Amorim, António, Ataei, Farnoush, Bogert, Pia, Brasseur, Zoé, Caudillo, Lucı́a, De Menezes, Louis-Philippe, Duplissy, Jonathan, Ekman, Annica M. L., Finkenzeller, Henning, Gonzalez Carracedo, Loı̈c, Granzin, Manuel, Guida, Roberto, Heinritzi, Martin, Hofbauer, Victoria, Höhler, Kristina, Krechmer, Jordan E., Kürten, Andreas, Lehtipalo, Katrianne, Mahfouz, Naser G. A., Makhmutov, Vladimir, Massabò, Dario, Mathot, Serge, Mauldin, Roy L., Mentler, Bernhard, Müller, Tatjana, Onnela, Antti, Philippov, Maxim, Piedehierro, Ana A., Pozzer, Andrea, Ranjithkumar, Ananth, Schervish, Meredith, Simon, Mario, Stozhkov, Yuri, Tomé, António, Umo, Nsikanabasi Silas, Vogel, Franziska, Wagner, Robert, Wang, Dongyu S., Weber, Stefan K., Welti, André, Wu, Yusheng, Zauner-Wieczorek, Marcel, Sipilä, Mikko, Winkler, Paul M., Hansel, Armin, Baltensperger, Urs, Kulmala, Markku, Flagan, Richard C., Curtius, Joachim, Volkamer, Rainer, Riipinen, Ilona, Gordon, Hamish, Lelieveld, Jos, El-Haddad, Imad, Worsnop, Douglas R., Christoudias, Theodoros, Kirkby, Jasper, Möhler, Ottmar, and Donahue, Neil M.

36. Iodine oxoacids enhance nucleation of sulfuric acid particles in the atmosphere.

Author

He XC, Simon M, Iyer S, Xie HB, Rörup B, Shen J, Finkenzeller H, Stolzenburg D, Zhang R, Baccarini A, Tham YJ, Wang M, Amanatidis S, Piedehierro AA, Amorim A, Baalbaki R, Brasseur Z, Caudillo L, Chu B, Dada L, Duplissy J, El Haddad I, Flagan RC, Granzin M, Hansel A, Heinritzi M, Hofbauer V, Jokinen T, Kemppainen D, Kong W, Krechmer J, Kürten A, Lamkaddam H, Lopez B, Ma F, Mahfouz NGA, Makhmutov V, Manninen HE, Marie G, Marten R, Massabò D, Mauldin RL, Mentler B, Onnela A, Petäjä T, Pfeifer J, Philippov M, Ranjithkumar A, Rissanen MP, Schobesberger S, Scholz W, Schulze B, Surdu M, Thakur RC, Tomé A, Wagner AC, Wang D, Wang Y, Weber SK, Welti A, Winkler PM, Zauner-Wieczorek M, Baltensperger U, Curtius J, Kurtén T, Worsnop DR, Volkamer R, Lehtipalo K, Kirkby J, Donahue NM, Sipilä M, and Kulmala M

Abstract

The main nucleating vapor in the atmosphere is thought to be sulfuric acid (H 2 SO 4 ), stabilized by ammonia (NH 3 ). However, in marine and polar regions, NH 3 is generally low, and H 2 SO 4 is frequently found together with iodine oxoacids [HIO x , i.e., iodic acid (HIO 3 ) and iodous acid (HIO 2 )]. In experiments performed with the CERN CLOUD (Cosmics Leaving OUtdoor Droplets) chamber, we investigated the interplay of H 2 SO 4 and HIO x during atmospheric particle nucleation. We found that HIO x greatly enhances H 2 SO 4 (-NH 3 ) nucleation through two different interactions. First, HIO 3 strongly binds with H 2 SO 4 in charged clusters so they drive particle nucleation synergistically. Second, HIO 2 substitutes for NH 3 , forming strongly bound H 2 SO 4 -HIO 2 acid-base pairs in molecular clusters. Global observations imply that HIO x is enhancing H 2 SO 4 (-NH 3 ) nucleation rates 10- to 10,000-fold in marine and polar regions.

Published
2023
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37. Role of iodine oxoacids in atmospheric aerosol nucleation.

Author

He XC, Tham YJ, Dada L, Wang M, Finkenzeller H, Stolzenburg D, Iyer S, Simon M, Kürten A, Shen J, Rörup B, Rissanen M, Schobesberger S, Baalbaki R, Wang DS, Koenig TK, Jokinen T, Sarnela N, Beck LJ, Almeida J, Amanatidis S, Amorim A, Ataei F, Baccarini A, Bertozzi B, Bianchi F, Brilke S, Caudillo L, Chen D, Chiu R, Chu B, Dias A, Ding A, Dommen J, Duplissy J, El Haddad I, Gonzalez Carracedo L, Granzin M, Hansel A, Heinritzi M, Hofbauer V, Junninen H, Kangasluoma J, Kemppainen D, Kim C, Kong W, Krechmer JE, Kvashin A, Laitinen T, Lamkaddam H, Lee CP, Lehtipalo K, Leiminger M, Li Z, Makhmutov V, Manninen HE, Marie G, Marten R, Mathot S, Mauldin RL, Mentler B, Möhler O, Müller T, Nie W, Onnela A, Petäjä T, Pfeifer J, Philippov M, Ranjithkumar A, Saiz-Lopez A, Salma I, Scholz W, Schuchmann S, Schulze B, Steiner G, Stozhkov Y, Tauber C, Tomé A, Thakur RC, Väisänen O, Vazquez-Pufleau M, Wagner AC, Wang Y, Weber SK, Winkler PM, Wu Y, Xiao M, Yan C, Ye Q, Ylisirniö A, Zauner-Wieczorek M, Zha Q, Zhou P, Flagan RC, Curtius J, Baltensperger U, Kulmala M, Kerminen VM, Kurtén T, Donahue NM, Volkamer R, Kirkby J, Worsnop DR, and Sipilä M

Abstract

Iodic acid (HIO 3 ) is known to form aerosol particles in coastal marine regions, but predicted nucleation and growth rates are lacking. Using the CERN CLOUD (Cosmics Leaving Outdoor Droplets) chamber, we find that the nucleation rates of HIO 3 particles are rapid, even exceeding sulfuric acid-ammonia rates under similar conditions. We also find that ion-induced nucleation involves IO 3 - and the sequential addition of HIO 3 and that it proceeds at the kinetic limit below +10°C. In contrast, neutral nucleation involves the repeated sequential addition of iodous acid (HIO 2 ) followed by HIO 3 , showing that HIO 2 plays a key stabilizing role. Freshly formed particles are composed almost entirely of HIO 3 , which drives rapid particle growth at the kinetic limit. Our measurements indicate that iodine oxoacid particle formation can compete with sulfuric acid in pristine regions of the atmosphere., (Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.)

Published
2021
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