Search Results - "Ehrhart, S."

Influence of aerosol lifetime on the interpretation of nucleation experiments with respect to the first nucleation theorem by Ehrhart, S, Curtius, J

“…The SAWNUC (Sulphuric Acid Water NUCleation) microphysical aerosol nucleation model is used to study the effect of reactor walls on the interpretation of…”
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Contribution of sulfuric acid and oxidized organic compounds to particle formation and growth by Riccobono, F, Rondo, L, Sipilä, M, Barmet, P, Curtius, J, Dommen, J, Ehn, M, Ehrhart, S, Kulmala, M, Kürten, A, Mikkilä, J, Paasonen, P, Petäjä, T, Weingartner, E, Baltensperger, U

“…Lack of knowledge about the mechanisms underlying new particle formation and their subsequent growth is one of the main causes for the large uncertainty in…”
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Performance of a corona ion source for measurement of sulfuric acid by chemical ionization mass spectrometry by Kürten, A., Rondo, L., Ehrhart, S., Curtius, J.

“…The performance of an ion source based on corona discharge has been studied. This source is used for the detection of gaseous sulfuric acid by chemical…”
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Experimental investigation of ion–ion recombination under atmospheric conditions by Franchin, A, Ehrhart, S, Leppae, J, Nieminen, T, Gagne, S, Schobesberger, S, Wimmer, D, Duplissy, J, Riccobono, F, Dunne, E M

“…We present the results of laboratory measurements of the ion–ion recombination coefficient at different temperatures, relative humidities and concentrations of…”
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Technical Note: Using DEG-CPCs at upper tropospheric temperatures by Wimmer, D, Lehtipalo, K, Nieminen, T, Duplissy, J, Ehrhart, S, Almeida, J, Rondo, L, Franchin, A, Kreissl, F, Bianchi, F, Manninen, H. E, Kulmala, M, Curtius, J, Petäjä, T

“…Over the last few years, several condensation particle counters (CPCs) capable of measuring in the sub-3 nm size range have been developed. Here we study the…”
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Hygroscopicity of nanoparticles produced from homogeneous nucleation in the CLOUD experiments by Kim, J., Ahlm, L., Yli-Juuti, T., Lawler, M., Keskinen, H., Tröstl, J., Schobesberger, S., Duplissy, J., Amorim, A., Bianchi, F., Donahue, N. M., Flagan, R. C., Hakala, J., Heinritzi, M., Jokinen, T., Kürten, A., Laaksonen, A., Lehtipalo, K., Miettinen, P., Petäjä, T., Rissanen, M. P., Rondo, L., Sengupta, K., Simon, M., Tomé, A., Williamson, C., Wimmer, D., Winkler, P. M., Ehrhart, S., Ye, P., Kirkby, J., Curtius, J., Baltensperger, U., Kulmala, M., Lehtinen, K. E. J., Smith, J. N., Riipinen, I., Virtanen, A.

“…Sulfuric acid, amines and oxidized organics have been found to be important compounds in the nucleation and initial growth of atmospheric particles. Because of…”
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Effect of ions on the measurement of sulfuric acid in the CLOUD experiment at CERN by Rondo, L, Kürten, A, Ehrhart, S, Schobesberger, S, Franchin, A, Junninen, H, Petäjä, T, Sipilä, M, Worsnop, D. R, Curtius, J

“…Ternary aerosol nucleation experiments were conducted in the CLOUD chamber at CERN in order to investigate the influence of ions on new particle formation…”
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A fibre-optic UV system for H2SO4 production in aerosol chambers causing minimal thermal effects by KUPC, A, AMORIM, A, LIMA, J. M, MATHOT, S, MINGINETTE, P, ONNELA, A, RONDO, L, WAGNER, P. E, CURTIUS, J, DANIELCZOK, A, DUPLISSY, J, EHRHART, S, WALTHER, H, ICKES, L, KIRKBY, J, KÜRTEN, A

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Numerical simulation and evaluation of global ultrafine particle concentrations at the Earth's surface by Kohl, Matthias, Lelieveld, Jos, Chowdhury, Sourangsu, Ehrhart, Sebastian, Sharma, Disha, Cheng, Yafang, Tripathi, Sachchida Nand, Sebastian, Mathew, Pandithurai, Govindan, Wang, Hongli, Pozzer, Andrea

“…A new global dataset of annually averaged ultrafine particle (UFP) concentrations at the Earth's surface for the years 2015–2017 has been developed through…”
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Modelling the gas–particle partitioning and water uptake of isoprene-derived secondary organic aerosol at high and low relative humidity by Amaladhasan, Dalrin Ampritta, Heyn, Claudia, Hoyle, Christopher R, El Haddad, Imad, Elser, Miriam, Pieber, Simone M, Slowik, Jay G, Amorim, Antonio, Duplissy, Jonathan, Ehrhart, Sebastian, Makhmutov, Vladimir, Molteni, Ugo, Rissanen, Matti, Stozhkov, Yuri, Wagner, Robert, Hansel, Armin, Kirkby, Jasper, Donahue, Neil M, Volkamer, Rainer, Baltensperger, Urs, Gysel-Beer, Martin, Zuend, Andreas

“…This study presents a characterization of the hygroscopic growth behaviour and effects of different inorganic seed particles on the formation of secondary…”
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Simulation of organics in the atmosphere: evaluation of EMACv2.54 with the Mainz Organic Mechanism (MOM) coupled to the ORACLE (v1.0) submodel by Pozzer, Andrea, Reifenberg, Simon F., Kumar, Vinod, Franco, Bruno, Kohl, Matthias, Taraborrelli, Domenico, Gromov, Sergey, Ehrhart, Sebastian, Jöckel, Patrick, Sander, Rolf, Fall, Veronica, Rosanka, Simon, Karydis, Vlassis, Akritidis, Dimitris, Emmerichs, Tamara, Crippa, Monica, Guizzardi, Diego, Kaiser, Johannes W., Clarisse, Lieven, Kiendler-Scharr, Astrid, Tost, Holger, Tsimpidi, Alexandra

“…An updated and expanded representation of organics in the chemistry general circulation model EMAC (ECHAM5/MESSy for Atmospheric Chemistry) has been evaluated…”
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Measurement–model comparison of stabilized Criegee intermediate and highly oxygenated molecule production in the CLOUD chamber by Sarnela, Nina, Jokinen, Tuija, Duplissy, Jonathan, Yan, Chao, Nieminen, Tuomo, Ehn, Mikael, Schobesberger, Siegfried, Heinritzi, Martin, Ehrhart, Sebastian, Lehtipalo, Katrianne, Trostl, Jasmin, Simon, Mario, Kurten, Andreas, Leiminger, Markus, Lawler, Michael J, Rissanen, Matti P, Bianchi, Federico, Praplan, Arnaud P, Hakala, Jani, Amorim, Antonio, Gonin, Marc, Hansel, Armin, Kirkby, Jasper, Dommen, Josef, Curtius, Joachim, Smith, James N, Petaja, Tuukka, Worsnop, Douglas R, Kulmala, Markku, Donahue, Neil M, Sipila, Mikko

“…Atmospheric oxidation is an important phenomenon which produces large quantities of low-volatility compounds such as sulfuric acid and oxidized organic…”
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Evaporation of sulfate aerosols at low relative humidity by Tsagkogeorgas, Georgios, Roldin, Pontus, Duplissy, Jonathan, Rondo, Linda, Tröstl, Jasmin, Slowik, Jay G, Ehrhart, Sebastian, Franchin, Alessandro, Kürten, Andreas, Amorim, Antonio, Bianchi, Federico, Kirkby, Jasper, Petäjä, Tuukka, Baltensperger, Urs, Boy, Michael, Curtius, Joachim, Flagan, Richard C, Kulmala, Markku, Donahue, Neil M, Stratmann, Frank

“…Evaporation of sulfuric acid from particles can be important in the atmospheres of Earth and Venus. However, the equilibrium constant for the dissociation of…”
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Two new submodels for the Modular Earth Submodel System (MESSy): New Aerosol Nucleation (NAN) and small ions (IONS) version 1.0 by Ehrhart, Sebastian, Dunne, Eimear M., Manninen, Hanna E., Nieminen, Tuomo, Lelieveld, Jos, Pozzer, Andrea

“…Two new submodels for the Modular Earth Submodel System (MESSy) were developed. The New Aerosol Nucleation (NAN) submodel includes new parameterisations of…”
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Temperature uniformity in the CERN CLOUD chamber by Dias, António, Ehrhart, Sebastian, Vogel, Alexander, Williamson, Christina, Almeida, João, Kirkby, Jasper, Mathot, Serge, Mumford, Samuel, Onnela, Antti

“…The CLOUD (Cosmics Leaving OUtdoor Droplets) experiment at CERN (European Council for Nuclear Research) investigates the nucleation and growth of aerosol…”
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Effect of dimethylamine on the gas phase sulfuric acid concentration measured by Chemical Ionization Mass Spectrometry by Rondo, L., Ehrhart, S., Kürten, A., Adamov, A., Bianchi, F., Breitenlechner, M., Duplissy, J., Franchin, A., Dommen, J., Donahue, N. M., Dunne, E. M., Flagan, R. C., Hakala, J., Hansel, A., Keskinen, H., Kim, J., Jokinen, T., Lehtipalo, K., Leiminger, M., Praplan, A., Riccobono, F., Rissanen, M. P., Sarnela, N., Schobesberger, S., Simon, M., Sipilä, M., Smith, J. N., Tomé, A., Tröstl, J., Tsagkogeorgas, G., Vaattovaara, P., Winkler, P. M., Williamson, C., Wimmer, D., Baltensperger, U., Kirkby, J., Kulmala, M., Petäjä, T., Worsnop, D. R., Curtius, J.

“…Sulfuric acid is widely recognized as a very important substance driving atmospheric aerosol nucleation. Based on quantum chemical calculations it has been…”
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Collaborative prototyping approaches for ICU decision aid design by Ehrhart, L S, Hanson, C W, Marshall, B E, Marshall, C, Medsker, C

“…When computer-based aids do not support the human users' decision-making strategies or anticipate the organizational impacts of technological change, advances…”
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Global atmospheric particle formation from CERN CLOUD measurements by Dunne, E. M., Gordon, H., Kurten, A., Almeida, J., Duplissy, J., Williamson, C., Ortega, I. K., Pringle, K. J., Adamov, A., Baltensperger, U., Barmet, P., Benduhn, F., Bianchi, F., Breitenlechner, M., Clarke, A., Curtius, J., Dommen, J., Donahue, N. M., Ehrhart, S., Flagan, R. C., Franchin, A., Guida, R., Hakala, J., Hansel, A., Heinritzi, M., Jokinen, T., Kangasluoma, J., Kirkby, J., Kulmala, M., Kupc, A., Lawler, M. J., Lehtipalo, K., Makhmutov, V., Mann, G., Mathot, S., Merikanto, J., Miettinen, P., Nenes, A., Onnela, A., Rap, A., Reddington, C. L. S., Riccobono, F., Richards, N. A. D., Rissanen, M. P., Rondo, L., Sarnela, N., Schobesberger, S., Sengupta, K., Simon, M., Sipila, M., Smith, J. N., Stozkhov, Y., Tome, A., Trostl, J., Wagner, P. E., Wimmer, D., Winkler, P. M., Worsnop, D. R., Carslaw, K. S.

“…Not provided…”
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Hygroscopicity of nanoparticles produced from homogeneous nucleation in the CLOUD experiments by Kim, J, Ahlm, L, Yli-Juuti, T, Lawler, M, Keskinen, H, Tröstl, J, Schobesberger, S, Duplissy, J, Amorim, A, Bianchi, F, Donahue, N. M, Flagan, R. C, Hakala, J, Heinritzi, M, Jokinen, T, Kürten, A, Laaksonen, A, Lehtipalo, K, Miettinen, P, Petäjä, T, Rissanen, M. P, Rondo, L, Sengupta, K, Simon, M, Tomé, A, Williamson, C, Wimmer, D, Winkler, P. M, Ehrhart, S, Ye, P, Kirkby, J, Curtius, J, Baltensperger, U, Kulmala, M, Lehtinen, K. E. J, Smith, J. N, Riipinen, I, Virtanen, A

“…Sulfuric acid, amines and oxidized organics have been found to be important compounds in the nucleation and initial growth of atmospheric particles. Because of…”
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A fibre-optic UV system for H sub(2SO) sub(4) production in aerosol chambers causing minimal thermal effects by Kupc, A, Amorim, A, Curtius, J, Danielczok, A, Duplissy, J, Ehrhart, S, Walther, H, Ickes, L, Kirkby, J, Kuerten, A, Lima, J M, Mathot, S, Minginette, P, Onnela, A, Rondo, L, Wagner, P E

“…A novel fibre-optic UV illumination system for sulphuric acid (H sub(2SO) sub(4)) production has been developed. The illumination system described in this…”
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