Search Results - "Elshorbany, Y"

Impact of HONO on global atmospheric chemistry calculated with an empirical parameterization in the EMAC model by Elshorbany, Y. F, Steil, B, Brühl, C, Lelieveld, J

“…The photolysis of HONO is important for the atmospheric HOx (OH + HO2) radical budget and ozone formation, especially in polluted air. Nevertheless, owing to…”
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Oxidation capacity of the city air of Santiago, Chile by Elshorbany, Y. F., Kurtenbach, R., Wiesen, P., Lissi, E., Rubio, M., Villena, G., Gramsch, E., Rickard, A. R., Pilling, M. J., Kleffmann, J.

“…The oxidation capacity of the highly polluted urban area of Santiago, Chile has been evaluated during a summer measurement campaign carried out from 8–20 March…”
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Light induced conversion of nitrogen dioxide into nitrous acid on submicron humic acid aerosol by Stemmler, K., Ndour, M., Elshorbany, Y., Kleffmann, J., D'Anna, B., George, C., Bohn, B., Ammann, M.

“…The interactions of aerosols consisting of humic acids with gaseous nitrogen dioxide (NO2) were investigated under different light conditions in aerosol flow…”
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Global and regional impacts of HONO on the chemical composition of clouds and aerosols by Elshorbany, Y. F, Crutzen, P. J, Steil, B, Pozzer, A, Tost, H, Lelieveld, J

“…Recently, realistic simulation of nitrous acid (HONO) based on the HONO / NOx ratio of 0.02 was found to have a significant impact on the global budgets of HOx…”
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Seasonal dependence of the oxidation capacity of the city of Santiago de Chile by Elshorbany, Y.F., Kleffmann, J., Kurtenbach, R., Lissi, E., Rubio, M., Villena, G., Gramsch, E., Rickard, A.R., Pilling, M.J., Wiesen, P.

“…The oxidation capacity of the highly polluted urban area of Santiago de Chile has been evaluated during a winter measurement campaign from May 25 to June 07,…”
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HOx budgets during HOxComp: A case study of HOx chemistry under NOx-limited conditions by Elshorbany, Y. F., Kleffmann, J., Hofzumahaus, A., Kurtenbach, R., Wiesen, P., Brauers, T., Bohn, B., Dorn, H.-P., Fuchs, H., Holland, F., Rohrer, F., Tillmann, R., Wegener, R., Wahner, A., Kanaya, Y., Yoshino, A., Nishida, S., Kajii, Y., Martinez, M., Kubistin, D., Harder, H., Lelieveld, J., Elste, T., Plass-Dülmer, C., Stange, G., Berresheim, H., Schurath, U.

“…Recent studies have shown that measured OH under NOx‐limited, high‐isoprene conditions are many times higher than modeled OH. In this study, a detailed…”
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Tropospheric Ozone Assessment Report: A critical review of changes in the tropospheric ozone burden and budget from 1850 to 2100 by Archibald, A T, Neu, J L, Elshorbany, Y F, Cooper, O R, Young, P J, Akiyoshi, H, Cox, R A, Coyle, M, Derwent, R G, Deushi, M, Finco, A, Frost, G J, Galbally, I E, Gerosa, G, Granier, C, Griffiths, P T, Hossaini, R, Hu L, Jöckel, P, Josse, B, Lin, M Y, Mertens, M, Morgenstern, O, Naja, M, Naik, V, Oltmans, S, Plummer, D A, Revell, L E, Saiz-Lopez, A, Saxena, P, Shin, Y M, Shahid, I, Shallcross, D, Tilmes, S, Trickl, T, Wallington, T J, Wang, T, Worden, H M, Zeng, G

“…Our understanding of the processes that control the burden and budget of tropospheric ozone has changed dramatically over the last 60 years. Models are the key…”
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Summertime photochemical ozone formation in Santiago, Chile by Elshorbany, Y.F., Kleffmann, J., Kurtenbach, R., Rubio, M., Lissi, E., Villena, G., Gramsch, E., Rickard, A.R., Pilling, M.J., Wiesen, P.

“…The city of Santiago, Chile experiences frequent high pollution episodes and as a consequence very high ozone concentrations, which are associated with health…”
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Simultaneous measurements of formaldehyde and nitrous acid in dews and gas phase in the atmosphere of Santiago, Chile by Rubio, María A., Lissi, Eduardo, Villena, Guillermo, Elshorbany, Y.F., Kleffmann, Jörg, Kurtenbach, Ralf, Wiesen, Peter

“…The amounts of formaldehyde and nitrous acid (HONO) in gas phase and dews of Santiago de Chile were simultaneously measured. Formaldehyde concentrations values…”
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Evaluation of 1,3,5 trimethylbenzene degradation in the detailed tropospheric chemistry mechanism, MCMv3.1, using environmental chamber data by Metzger, A., Dommen, J., Gaeggeler, K., Duplissy, J., Prevot, A. S. H., Kleffmann, J., Elshorbany, Y., Wisthaler, A., Baltensperger, U.

“…The degradation mechanism of 1,3,5-trimethyl- benzene (TMB) as implemented in the Master Chemical Mechanism version 3.1 (MCM) was evaluated using data from the…”
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Comparisons of observed and modeled OH and HO 2 concentrations during the ambient measurement period of the HO x Comp field campaign by Kanaya, Y., Hofzumahaus, A., Dorn, H.-P., Brauers, T., Fuchs, H., Holland, F., Rohrer, F., Bohn, B., Tillmann, R., Wegener, R., Wahner, A., Kajii, Y., Miyamoto, K., Nishida, S., Watanabe, K., Yoshino, A., Kubistin, D., Martinez, M., Rudolf, M., Harder, H., Berresheim, H., Elste, T., Plass-Dülmer, C., Stange, G., Kleffmann, J., Elshorbany, Y., Schurath, U.

“…A photochemical box model constrained by ancillary observations was used to simulate OH and HO2 concentrations for three days of ambient observations during…”
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Comparisons of observed and modeled OH and HO2 concentrations during the ambient measurement period of the HOxComp field campaign by Kanaya, Y, Hofzumahaus, A, Dorn, H.-P, Brauers, T, Fuchs, H, Holland, F, Rohrer, F, Bohn, B, Tillmann, R, Wegener, R, Wahner, A, Kajii, Y, Miyamoto, K, Nishida, S, Watanabe, K, Yoshino, A, Kubistin, D, Martinez, M, Rudolf, M, Harder, H, Berresheim, H, Elste, T, Plass-Dülmer, C, Stange, G, Kleffmann, J, Elshorbany, Y, Schurath, U

“…A photochemical box model constrained by ancillary observations was used to simulate OH and HO2 concentrations for three days of ambient observations during…”
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Tropospheric Ozone Assessment Report by Archibald, A. T., Neu, J. L., Elshorbany, Y. F., Cooper, O. R., Young, P. J., Akiyoshi, H., Cox, R. A., Coyle, M., Derwent, R. G., Deushi, M., Finco, A., Frost, G. J., Galbally, I. E., Gerosa, G., Granier, C., Griffiths, P. T., Hossaini, R., Hu, L., Jöckel, P., Josse, B., Lin, M. Y., Mertens, M., Morgenstern, O., Naja, M., Naik, V., Oltmans, S., Plummer, D. A., Revell, L. E., Saiz-Lopez, A., Saxena, P., Shin, Y. M., Shahid, I., Shallcross, D., Tilmes, S., Trickl, T., Wallington, T. J., Wang, T., Worden, H. M., Zeng, G.

“…Our understanding of the processes that control the burden and budget of tropospheric ozone has changed dramatically over the last 60 years. Models are the key…”
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Changes in South American surface ozone trends: exploring the influences of precursors and extreme events by Seguel, Rodrigo J, Castillo, Lucas, Opazo, Charlie, Rojas, Néstor Y, Nogueira, Thiago, Cazorla, María, Gavidia-Calderón, Mario, Gallardo, Laura, Garreaud, René, Carrasco-Escaff, Tomás, Elshorbany, Yasin

“…In this study, trends of 21st-century ground-level ozone and ozone precursors were examined across South America, a less-studied region where trend estimates…”
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Tropospheric ozone precursors: global and regional distributions, trends, and variability by Elshorbany, Yasin, Ziemke, Jerald R, Strode, Sarah, Petetin, Hervé, Miyazaki, Kazuyuki, De Smedt, Isabelle, Pickering, Kenneth, Seguel, Rodrigo J, Worden, Helen, Emmerichs, Tamara, Taraborrelli, Domenico, Cazorla, Maria, Fadnavis, Suvarna, Buchholz, Rebecca R, Gaubert, Benjamin, Rojas, Néstor Y, Nogueira, Thiago, Salameh, Thérèse, Huang, Min

“…Tropospheric ozone results from in situ chemical formation and stratosphere–troposphere exchange (STE), with the latter being more important in the middle and…”
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Light-induced protein nitration and degradation with HONO emission by Meusel, Hannah, Yasin Elshorbany, Kuhn, Uwe, Bartels-Rausch, Thorsten, Reinmuth-Selzle, Kathrin, Kampf, Christopher J, Guo, Li, Wang, Xiaoxiang, Lelieveld, Jos, Pöschl, Ulrich, Hoffmann, Thorsten, Su, Hang, Ammann, Markus, Cheng, Yafang

“…Proteins can be nitrated by air pollutants (NO2), enhancing their allergenic potential. This work provides insight into protein nitration and subsequent…”
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Humic acid in ice: Photo-enhanced conversion of nitrogen dioxide into nitrous acid by Bartels-Rausch, Thorsten, Brigante, Marcello, Elshorbany, Yasin F., Ammann, Markus, D'Anna, Barbara, George, Christian, Stemmler, Konrad, Ndour, Marieme, Kleffmann, Jörg

“…Laboratory studies on the heterogeneous conversion of nitrogen dioxide into nitrous acid on irradiated ice films containing humic acid are described. It was…”
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An investigation into the chemistry of HONO in the marine boundary layer at Tudor Hill Marine Atmospheric Observatory in Bermuda by Zhu, Yuting, Wang, Youfeng, Zhou, Xianliang, Elshorbany, Yasin F, Ye, Chunxiang, Hayden, Matthew, Peters, Andrew J

“…Here we present measurement results of temporal distributions of nitrous acid (HONO) along with several chemical and meteorological parameters during the…”
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HO x budgets during HOxComp: A case study of HO x chemistry under NO x ‐limited conditions by Elshorbany, Y. F., Kleffmann, J., Hofzumahaus, A., Kurtenbach, R., Wiesen, P., Brauers, T., Bohn, B., Dorn, H.‐P., Fuchs, H., Holland, F., Rohrer, F., Tillmann, R., Wegener, R., Wahner, A., Kanaya, Y., Yoshino, A., Nishida, S., Kajii, Y., Martinez, M., Kubistin, D., Harder, H., Lelieveld, J., Elste, T., Plass‐Dülmer, C., Stange, G., Berresheim, H., Schurath, U.

“…Recent studies have shown that measured OH under NO x ‐limited, high‐isoprene conditions are many times higher than modeled OH. In this study, a detailed…”
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Comparisons of observed and modeled OH and HO.sub.2 concentrations during the ambient measurement period of the HO.sub.xComp field campaign by Kanaya, Y, Hofzumahaus, A, Dorn, H.-P, Brauers, T, Fuchs, H, Holland, F, Rohrer, F, Bohn, B, Tillmann, R, Wegener, R, Wahner, A, Kajii, Y, Miyamoto, K, Nishida, S, Watanabe, K, Yoshino, A, Kubistin, D, Martinez, M, Rudolf, M, Harder, H, Berresheim, H, Elste, T, Plass-Dülmer, C, Stange, G, Kleffmann, J, Elshorbany, Y, Schurath, U

“…A photochemical box model constrained by ancillary observations was used to simulate OH and HO.sub.2 concentrations for three days of ambient observations…”
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