Search Results - "Ditas, F"

Inferring the diurnal variability of OH radical concentrations over the Amazon from BVOC measurements by Ringsdorf, A., Edtbauer, A., Vilà-Guerau de Arellano, J., Pfannerstill, E. Y., Gromov, S., Kumar, V., Pozzer, A., Wolff, S., Tsokankunku, A., Soergel, M., Sá, M. O., Araújo, A., Ditas, F., Poehlker, C., Lelieveld, J., Williams, J.

“…The atmospheric oxidation of biogenic volatile organic compounds (BVOC) by OH radicals over tropical rainforests impacts local particle production and the…”
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Observations of new particle formation in enhanced UV irradiance zones near cumulus clouds by Wehner, B, Werner, F, Ditas, F, Shaw, R. A, Kulmala, M, Siebert, H

“…During the CARRIBA (Cloud, Aerosol, Radiation and tuRbulence in the trade wInd regime over BArbados) campaign, the interaction between aerosol particles and…”
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Long-term deposition and condensation ice-nucleating particle measurements from four stations across the globe by Schrod, Jann, Thomson, Erik S, Weber, Daniel, Kossmann, Jens, Pöhlker, Christopher, Saturno, Jorge, Ditas, Florian, Artaxo, Paulo, Clouard, Valérie, Saurel, Jean-Marie, Ebert, Martin, Curtius, Joachim, Bingemer, Heinz G

“…Ice particle activation and evolution have important atmospheric implications for cloud formation, initiation of precipitation and radiative interactions. The…”
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Aerosols-cloud microphysics-thermodynamics-turbulence: evaluating supersaturation in a marine stratocumulus cloud by Ditas, F, Shaw, R. A, Siebert, H, Simmel, M, Wehner, B, Wiedensohler, A

“…This work presents a unique combination of aerosol, cloud microphysical, thermodynamic and turbulence variables to characterize supersaturation fluctuations in…”
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Relationships between submicrometer particulate air pollution and air mass history in Beijing, China, 2004–2006 by Wehner, B., Birmili, W., Ditas, F., Wu, Z., Hu, M., Liu, X., Mao, J., Sugimoto, N., Wiedensohler, A.

“…The Chinese capital Beijing is one of the global megacities where the effects of rapid economic growth have led to complex air pollution problems that are not…”
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Observations of turbulence-induced new particle formation in the residual layer by Wehner, B., Siebert, H., Ansmann, A., Ditas, F., Seifert, P., Stratmann, F., Wiedensohler, A., Apituley, A., Shaw, R. A., Manninen, H. E., Kulmala, M.

“…Aerosol particle measurements in the atmospheric boundary layer performed by a helicopter-borne measurement payload and by a lidar system from a case study…”
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The fine-scale structure of the trade wind cumuli over Barbados – an introduction to the CARRIBA project by Siebert, H, Beals, M, Bethke, J, Bierwirth, E, Conrath, T, Dieckmann, K, Ditas, F, Ehrlich, A, Farrell, D, Hartmann, S, Izaguirre, M. A, Katzwinkel, J, Nuijens, L, Roberts, G, Schäfer, M, Shaw, R. A, Schmeissner, T, Serikov, I, Stevens, B, Stratmann, F, Wehner, B, Wendisch, M, Werner, F, Wex, H

“…The CARRIBA (Cloud, Aerosol, Radiation and tuRbulence in the trade wInd regime over BArbados) project, focused on high resolution and collocated measurements…”
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Twomey effect observed from collocated microphysical and remote sensing measurements over shallow cumulus by Werner, F., Ditas, F., Siebert, H., Simmel, M., Wehner, B., Pilewskie, P., Schmeissner, T., Shaw, R. A., Hartmann, S., Wex, H., Roberts, G. C., Wendisch, M.

“…Clear experimental evidence of the Twomey effect for shallow trade wind cumuli near Barbados is presented. Effective droplet radius (reff) and cloud optical…”
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Characterisation of a new Fast CPC and its application for atmospheric particle measurements by Wehner, B., Siebert, H., Hermann, M., Ditas, F., Wiedensohler, A.

“…A new Fast CPC (FCPC) using butanol as working fluid has been built based on the setup described by Wang et al. (2002). In this study, we describe the new…”
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Corrigendum to "Characterisation of a new Fast CPC and its application for atmospheric particle measurements" published in Atmos. Meas. Tech., 4, 823–833, 2011 by Wehner, B., Siebert, H., Hermann, M., Ditas, F., Wiedensohler, A.

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Frequent new particle formation at remote sites in the subboreal forest of North America by Andreae, Meinrat O, Andreae, Tracey W, Ditas, Florian, Pöhlker, Christopher

“…The frequency and intensity of new particle formation (NPF) over remote forest regions in the temperate and boreal zones, and thus the importance of NPF for…”
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Infrequent new particle formation over the remote boreal forest of Siberia by Wiedensohler, A., Ma, N., Birmili, W., Heintzenberg, J., Ditas, F., Andreae, M.O., Panov, A.

“…Aerosol particle number size distributions (PNSD) were investigated to verify, if extremely low-volatility organic vapors (ELVOC) from natural sources alone…”
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The Amazon Tall Tower Observatory (ATTO): overview of pilot measurements on ecosystem ecology, meteorology, trace gases, and aerosols by Andreae, M. O, Acevedo, O. C, Araùjo, A, Artaxo, P, Barbosa, C. G. G, Barbosa, H. M. J, Brito, J, Carbone, S, Chi, X, Cintra, B. B. L, da Silva, N. F, Dias, N. L, Dias-Júnior, C. Q, Ditas, F, Ditz, R, Godoi, A. F. L, Godoi, R. H. M, Heimann, M, Hoffmann, T, Kesselmeier, J, Könemann, T, Krüger, M. L, Lavric, J. V, Manzi, A. O, Lopes, A. P, Martins, D. L, Mikhailov, E. F, Moran-Zuloaga, D, Nelson, B. W, Nölscher, A. C, Santos Nogueira, D, Piedade, M. T. F, Pöhlker, C, Pöschl, U, Quesada, C. A, Rizzo, L. V, Ro, C.-U, Ruckteschler, N, Sá, L. D. A, de Oliveira Sá, M, Sales, C. B, dos Santos, R. M. N, Saturno, J, Schöngart, J, Sörgel, M, de Souza, C. M, de Souza, R. A. F, Su, H, Targhetta, N, Tóta, J, Trebs, I, Trumbore, S, van Eijck, A, Walter, D, Wang, Z, Weber, B, Williams, J, Winderlich, J, Wittmann, F, Wolff, S, Yáñez-Serrano, A. M

“…The Amazon Basin plays key roles in the carbon and water cycles, climate change, atmospheric chemistry, and biodiversity. It has already been changed…”
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Total OH reactivity over the Amazon rainforest: variability with temperature, wind, rain, altitude, time of day, season, and an overall budget closure by Pfannerstill, Eva Y, Reijrink, Nina G, Edtbauer, Achim, Ringsdorf, Akima, Zannoni, Nora, Araújo, Alessandro, Ditas, Florian, Holanda, Bruna A, Sá, Marta O, Tsokankunku, Anywhere, Walter, David, Wolff, Stefan, Lavric, JoÅ¡t V, Pöhlker, Christopher, Sörgel, Matthias, Williams, Jonathan

“…The tropical forests are Earth's largest source of biogenic volatile organic compounds (BVOCs) and thus also the largest atmospheric sink region for the…”
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Long-term observations of cloud condensation nuclei in the Amazon rain forest – Part 1: Aerosol size distribution, hygroscopicity, and new model parametrizations for CCN prediction by Pöhlker, Mira L, Pöhlker, Christopher, Ditas, Florian, Klimach, Thomas, Hrabe de Angelis, Isabella, Araújo, Alessandro, Brito, Joel, Carbone, Samara, Cheng, Yafang, Chi, Xuguang, Ditz, Reiner, Gunthe, Sachin S, Kesselmeier, Jürgen, Könemann, Tobias, Lavrič, JoÅ¡t V, Martin, Scot T, Mikhailov, Eugene, Moran-Zuloaga, Daniel, Rose, Diana, Saturno, Jorge, Su, Hang, Thalman, Ryan, Walter, David, Wang, Jian, Wolff, Stefan, Barbosa, Henrique M. J, Artaxo, Paulo, Andreae, Meinrat O, Pöschl, Ulrich

“…Size-resolved long-term measurements of atmospheric aerosol and cloud condensation nuclei (CCN) concentrations and hygroscopicity were conducted at the remote…”
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Long-term observations of cloud condensation nuclei over the Amazon rain forest – Part 2: Variability and characteristics of biomass burning, long-range transport, and pristine rain forest aerosols by Pöhlker, Mira L, Ditas, Florian, Saturno, Jorge, Klimach, Thomas, Hrabě de Angelis, Isabella, Araùjo, Alessandro C, Brito, Joel, Carbone, Samara, Cheng, Yafang, Chi, Xuguang, Ditz, Reiner, Gunthe, Sachin S, Holanda, Bruna A, Kandler, Konrad, Kesselmeier, Jürgen, Könemann, Tobias, Krüger, Ovid O, Lavrič, JoÅ¡t V, Martin, Scot T, Mikhailov, Eugene, Moran-Zuloaga, Daniel, Rizzo, Luciana V, Rose, Diana, Su, Hang, Thalman, Ryan, Walter, David, Wang, Jian, Wolff, Stefan, Barbosa, Henrique M. J, Artaxo, Paulo, Andreae, Meinrat O, Pöschl, Ulrich, Pöhlker, Christopher

“…Size-resolved measurements of atmospheric aerosol and cloud condensation nuclei (CCN) concentrations and hygroscopicity were conducted over a full seasonal…”
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Influx of African biomass burning aerosol during the Amazonian dry season through layered transatlantic transport of black carbon-rich smoke by Holanda, Bruna A, Pöhlker, Mira L, Walter, David, Saturno, Jorge, Sörgel, Matthias, Ditas, Jeannine, Ditas, Florian, Schulz, Christiane, Franco, Marco Aurélio, Wang, Qiaoqiao, Donth, Tobias, Artaxo, Paulo, Barbosa, Henrique M. J, Borrmann, Stephan, Braga, Ramon, Brito, Joel, Cheng, Yafang, Dollner, Maximilian, Kaiser, Johannes W, Klimach, Thomas, Knote, Christoph, Krüger, Ovid O, Fütterer, Daniel, Lavric, JoÅ¡t V, Ma, Nan, Machado, Luiz A. T, Ming, Jing, Morais, Fernando G, Paulsen, Hauke, Sauer, Daniel, Schlager, Hans, Schneider, Johannes, Su, Hang, Weinzierl, Bernadett, Walser, Adrian, Wendisch, Manfred, Ziereis, Helmut, Zöger, Martin, Pöschl, Ulrich, Andreae, Meinrat O, Pöhlker, Christopher

“…Black carbon (BC) aerosols influence the Earth's atmosphere and climate, but their microphysical properties, spatiotemporal distribution, and long-range…”
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Black and brown carbon over central Amazonia: long-term aerosol measurements at the ATTO site by Saturno, Jorge, Holanda, Bruna A, Pöhlker, Christopher, Ditas, Florian, Wang, Qiaoqiao, Moran-Zuloaga, Daniel, Brito, Joel, Carbone, Samara, Cheng, Yafang, Chi, Xuguang, Ditas, Jeannine, Hoffmann, Thorsten, Hrabe de Angelis, Isabella, Könemann, Tobias, Lavrič, JoÅ¡t V, Ma, Nan, Ming, Jing, Paulsen, Hauke, Pöhlker, Mira L, Rizzo, Luciana V, Schlag, Patrick, Su, Hang, Walter, David, Wolff, Stefan, Zhang, Yuxuan, Artaxo, Paulo, Pöschl, Ulrich, Andreae, Meinrat O

“…The Amazon rainforest is a sensitive ecosystem experiencing the combined pressures of progressing deforestation and climate change. Its atmospheric conditions…”
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Occurrence and growth of sub-50 nm aerosol particles in the Amazonian boundary layer by Franco, Marco A, Ditas, Florian, Kremper, Leslie A, Machado, Luiz A. T, Andreae, Meinrat O, Araújo, Alessandro, Barbosa, Henrique M. J, de Brito, Joel F, Carbone, Samara, Holanda, Bruna A, Morais, Fernando G, Nascimento, Janaína P, Pöhlker, Mira L, Rizzo, Luciana V, Sá, Marta, Saturno, Jorge, Walter, David, Wolff, Stefan, Pöschl, Ulrich, Artaxo, Paulo, Pöhlker, Christopher

“…New particle formation (NPF), referring to the nucleation of molecular clusters and their subsequent growth into the cloud condensation nuclei (CCN) size…”
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Land cover and its transformation in the backward trajectory footprint region of the Amazon Tall Tower Observatory by Pöhlker, Christopher, Walter, David, Paulsen, Hauke, Könemann, Tobias, Rodríguez-Caballero, Emilio, Moran-Zuloaga, Daniel, Brito, Joel, Carbone, Samara, Degrendele, Céline, Després, Viviane R, Ditas, Florian, Holanda, Bruna A, Kaiser, Johannes W, Lammel, Gerhard, Lavrič, JoÅ¡t V, Ming, Jing, Pickersgill, Daniel, Pöhlker, Mira L, Praß, Maria, Löbs, Nina, Saturno, Jorge, Sörgel, Matthias, Wang, Qiaoqiao, Weber, Bettina, Wolff, Stefan, Artaxo, Paulo, Pöschl, Ulrich, Andreae, Meinrat O

“…The Amazon rain forest experiences the combined pressures from human-made deforestation and progressing climate change, causing severe and potentially…”
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