Search Results - "Bozem, H"

Summertime total OH reactivity measurements from boreal forest during HUMPPA-COPEC 2010 by Nölscher, A. C, Williams, J, Sinha, V, Custer, T, Song, W, Johnson, A. M, Axinte, R, Bozem, H, Fischer, H, Pouvesle, N, Phillips, G, Crowley, J. N, Rantala, P, Rinne, J, Kulmala, M, Gonzales, D, Valverde-Canossa, J, Vogel, A, Hoffmann, T, Ouwersloot, H. G, Vilà-Guerau de Arellano, J, Lelieveld, J

“…Ambient total OH reactivity was measured at the Finnish boreal forest station SMEAR II in Hyytiälä (Latitude 61°51' N; Longitude 24°17' E) in July and August…”
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Quantification of the unknown HONO daytime source and its relation to NO2 by M. Martinez, Z. Hosaynali-Beygi, H. Harder, A. Held, H. Fischer, F. Drewnick, J.-M. Diesch, H. Bozem, E. Regelin, M. Sörgel, C. Zetzsch

“…During the DOMINO (Diel Oxidant Mechanism In relation to Nitrogen Oxides) campaign in southwest Spain we measured simultaneously all quantities necessary to…”
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Constraints on instantaneous ozone production rates and regimes during DOMINO derived using in-situ OH reactivity measurements by Sinha, V, Williams, J, Diesch, J. M, Drewnick, F, Martinez, M, Harder, H, Regelin, E, Kubistin, D, Bozem, H, Hosaynali-Beygi, Z, Fischer, H, Andrés-Hernández, M. D, Kartal, D, Adame, J. A, Lelieveld, J

“…In this study air masses are characterized in terms of their total OH reactivity which is a robust measure of the "reactive air pollutant loading". The…”
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Hydroxyl radicals in the tropical troposphere over the Suriname rainforest: airborne measurements by Martinez, M., Harder, H., Kubistin, D., Rudolf, M., Bozem, H., Eerdekens, G., Fischer, H., Klüpfel, T., Gurk, C., Königstedt, R., Parchatka, U., Schiller, C. L., Stickler, A., Williams, J., Lelieveld, J.

“…Direct measurements of OH and HO2 over a tropical rainforest were made for the first time during the GABRIEL campaign in October 2005, deploying the…”
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Hydroxyl radicals in the tropical troposphere over the Suriname rainforest: comparison of measurements with the box model MECCA by Kubistin, D., Harder, H., Martinez, M., Rudolf, M., Sander, R., Bozem, H., Eerdekens, G., Fischer, H., Gurk, C., Klüpfel, T., Königstedt, R., Parchatka, U., Schiller, C. L., Stickler, A., Taraborrelli, D., Williams, J., Lelieveld, J.

“…As a major source region of the hydroxyl radical OH, the Tropics largely control the oxidation capacity of the atmosphere on a global scale. However, emissions…”
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Influence of corona discharge on the ozone budget in the tropical free troposphere: a case study of deep convection during GABRIEL by Bozem, H, Fischer, H, Gurk, C, Schiller, C. L, Parchatka, U, Koenigstedt, R, Stickler, A, Martinez, M, Harder, H, Kubistin, D, Williams, J, Eerdekens, G, Lelieveld, J

“…Convective redistribution of ozone and its precursors between the boundary layer (BL) and the free troposphere (FT) influences photochemistry, in particular in…”
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Transport of Antarctic stratospheric strongly dehydrated air into the troposphere observed during the HALO-ESMVal campaign 2012 by Rolf, C, Afchine, A, Bozem, H, Buchholz, B, Ebert, V, Guggenmoser, T, Hoor, P, Konopka, P, Kretschmer, E, Müller, S, Schlager, H, Spelten, N, Sumińska-Ebersoldt, O, Ungermann, J, Zahn, A, Krämer, M

“…Dehydration in the Antarctic winter stratosphere is a well-known phenomenon that is annually observed by satellites and occasionally observed by balloon-borne…”
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Variable lifetimes and loss mechanisms for NO3 and N2O5 during the DOMINO campaign: contrasts between marine, urban and continental air by Crowley, J N, Thieser, J, Tang, M J, Schuster, G, Bozem, H, Beygi, Z H, Fischer, H, Diesch, J.-M, Drewnick, F, Borrmann, S, Song, W, Yassaa, N, Williams, J, Pöhler, D, Platt, U, Lelieveld, J

“…Nighttime mixing ratios of boundary layer N2 O5 were determined using cavity-ring-down spectroscopy during the DOMINO campaign in Southern Spain (Diel Oxidant…”
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In situ detection of stratosphere-troposphere exchange of cirrus particles in the midlatitudes by Müller, S., Hoor, P., Berkes, F., Bozem, H., Klingebiel, M., Reutter, P., Smit, H. G. J., Wendisch, M., Spichtinger, P., Borrmann, S.

“…Airborne trace gas, microphysical, and radiation measurements were performed during the AIRcraft TOwed Sensor Shuttle ‐ Inhomogeneous Cirrus Experiment over…”
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Depletion of ozone and reservoir species of chlorine and nitrogen oxide in the lower Antarctic polar vortex measured from aircraft by Jurkat, T., Voigt, C., Kaufmann, S., Grooß, J.‐U., Ziereis, H., Dörnbrack, A., Hoor, P., Bozem, H., Engel, A., Bönisch, H., Keber, T., Hüneke, T., Pfeilsticker, K., Zahn, A., Walker, K. A., Boone, C. D., Bernath, P. F., Schlager, H.

“…Abstract Novel airborne in situ measurements of inorganic chlorine, nitrogen oxide species, and ozone were performed inside the lower Antarctic polar vortex…”
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Distribution of hydrogen peroxide and formaldehyde over Central Europe during the HOOVER project by Klippel, T., Fischer, H., Bozem, H., Lawrence, M. G., Butler, T., Jöckel, P., Tost, H., Martinez, M., Harder, H., Regelin, E., Sander, R., Schiller, C. L., Stickler, A., Lelieveld, J.

“…In this study we report measurements of hydrogen peroxide (H2O2), methyl hydroperoxide* (MHP* as a proxy of MHP based on an unspecific measurement of total…”
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HOx measurements in the summertime upper troposphere over Europe: a comparison of observations to a box model and a 3-D model by Regelin, E, Harder, H, Martinez, M, Kubistin, D, Ernest, C Tatum, Bozem, H, Klippel, T, Hosaynali-Beygi, Z, Fischer, H, Sander, R, Jöckel, P, Königstedt, R, Lelieveld, J

“…In situ airborne measurements of OH and HO2 with the HORUS (HydrOxyl Radical measurement Unit based on fluorescence Spectroscopy) instrument were performed in…”
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Arctic air pollution: Challenges and opportunities for the next decade by Arnold, S.R., Law, K.S., Brock, C.A., Thomas, J.L., Starkweather, S.M., von Salzen, K., Stohl, A., Sharma, S., Lund, M.T., Flanner, M.G., Petäjä, T., Tanimoto, H., Gamble, J., Dibb, J.E., Melamed, M., Johnson, N., Fidel, M., Tynkkynen, V.-P., Baklanov, A., Eckhardt, S., Monks, S.A., Browse, J., Bozem, H.

“…The Arctic is a sentinel of global change. This region is influenced by multiple physical and socio-economic drivers and feedbacks, impacting both the natural…”
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Diel peroxy radicals in a semi-industrial coastal area: nighttime formation of free radicals by Andrés-Hernández, M. D, Kartal, D, Crowley, J. N, Sinha, V, Regelin, E, Martínez-Harder, M, Nenakhov, V, Williams, J, Harder, H, Bozem, H, Song, W, Thieser, J, Tang, M. J, Hosaynali Beigi, Z, Burrows, J. P

“…Peroxy radicals were measured by a PeRCA (Peroxy Radical Chemical Amplifier) instrument in the boundary layer during the DOMINO (Diel Oxidant Mechanisms In…”
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Applications of quantum cascade lasers for sensitive trace gas measurements of CO, CH4, N2O and HCHO by Schiller, C.L., Bozem, H., Gurk, C., Parchatka, U., Königstedt, R., Harris, G.W., Lelieveld, J., Fischer, H.

“…We describe here a sensitive quantum cascade laser absorption spectrometer (QCLAS) employed for aircraft based measurements during the GABRIEL 2005 and HOOVER…”
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A quantitative analysis of stratospheric HCl, HNO3, and O3 in the tropopause region near the subtropical jet by Jurkat, T., Voigt, C., Kaufmann, S., Zahn, A., Sprenger, M., Hoor, P., Bozem, H., Müller, S., Dörnbrack, A., Schlager, H., Bönisch, H., Engel, A.

“…The effects of chemical two‐way mixing on the Extratropical Transition Layer (ExTL) near the subtropical jet are investigated by stratospheric tracer‐tracer…”
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Case study of the diurnal variability of chemically active species with respect to boundary layer dynamics during DOMINO by van Stratum, B. J. H, Vilà-Guerau de Arellano, J, Ouwersloot, H. G, van den Dries, K, van Laar, T. W, Martinez, M, Lelieveld, J, Diesch, J.-M, Drewnick, F, Fischer, H, Hosaynali Beygi, Z, Harder, H, Regelin, E, Sinha, V, Adame, J. A, Sörgel, M, Sander, R, Bozem, H, Song, W, Williams, J, Yassaa, N

“…We study the interactions between atmospheric boundary layer (ABL) dynamics and atmospheric chemistry using a mixed-layer model coupled to chemical reaction…”
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Chemistry, transport and dry deposition of trace gases in the boundary layer over the tropical Atlantic Ocean and the Guyanas during the GABRIEL field campaign by Stickler, A., Fischer, H., Bozem, H., Gurk, C., Schiller, C., Martinez-Harder, M., Kubistin, D., Harder, H., Williams, J., Eerdekens, G., Yassaa, N., Ganzeveld, L., Sander, R., Lelieveld, J.

“…We present a comparison of different Lagrangian and chemical box model calculations with measurement data obtained during the GABRIEL campaign over the…”
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Overview paper: New insights into aerosol and climate in the Arctic by Abbatt, Jonathan P. D, Leaitch, W. Richard, Aliabadi, Amir A, Bertram, Allan K, Blanchet, Jean-Pierre, Boivin-Rioux, Aude, Bozem, Heiko, Burkart, Julia, Chang, Rachel Y. W, Charette, Joannie, Chaubey, Jai P, Christensen, Robert J, Cirisan, Ana, Collins, Douglas B, Croft, Betty, Dionne, Joelle, Evans, Greg J, Fletcher, Christopher G, Galí, Martí, Ghahremaninezhad, Roghayeh, Girard, Eric, Gong, Wanmin, Gosselin, Michel, Gourdal, Margaux, Hanna, Sarah J, Hayashida, Hakase, Herber, Andreas B, Hesaraki, Sareh, Hoor, Peter, Huang, Lin, Hussherr, Rachel, Irish, Victoria E, Keita, Setigui A, Kodros, John K, Köllner, Franziska, Kolonjari, Felicia, Kunkel, Daniel, Ladino, Luis A, Law, Kathy, Levasseur, Maurice, Libois, Quentin, Liggio, John, Lizotte, Martine, Macdonald, Katrina M, Mahmood, Rashed, Martin, Randall V, Mason, Ryan H, Miller, Lisa A, Moravek, Alexander, Mortenson, Eric, Mungall, Emma L, Murphy, Jennifer G, Namazi, Maryam, Norman, Ann-Lise, O'Neill, Norman T, Pierce, Jeffrey R, Russell, Lynn M, Schneider, Johannes, Schulz, Hannes, Sharma, Sangeeta, Si, Meng, Staebler, Ralf M, Steiner, Nadja S, Thomas, Jennie L, von Salzen, Knut, Wentzell, Jeremy J. B, Willis, Megan D, Wentworth, Gregory R, Xu, Jun-Wei, Yakobi-Hancock, Jacqueline D

“…Motivated by the need to predict how the Arctic atmosphere will change in a warming world, this article summarizes recent advances made by the research…”
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Preparation of low-concentration H2 test gas mixtures in ambient air for calibration of H2 sensors by Karbach, Niklas, Höhler, Lisa, Hoor, Peter, Bozem, Heiko, Bobrowski, Nicole, Hoffmann, Thorsten

“…Using electrochemical gas sensors for quantitative measurements of trace gas components in ambient air introduces several challenges, of which interference,…”
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