Search Results - "Oetjen, H"

Simulation of semi-explicit mechanisms of SOA formation from glyoxal in aerosol in a 3-D model by Knote, C, Hodzic, A, Jimenez, J. L, Volkamer, R, Orlando, J. J, Baidar, S, Brioude, J, Fast, J, Gentner, D. R, Goldstein, A. H, Hayes, P. L, Knighton, W. B, Oetjen, H, Setyan, A, Stark, H, Thalman, R, Tyndall, G, Washenfelder, R, Waxman, E, Zhang, Q

“…New pathways to form secondary organic aerosol (SOA) have been postulated recently. Glyoxal, the smallest dicarbonyl, is one of the proposed precursors. It has…”
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Cell resistances of poly(2,5-benzimidazole)-based high temperature polymer membrane fuel cell membrane electrode assemblies: Time dependence and influence of operating parameters by Wippermann, K., Wannek, C., Oetjen, H.-F., Mergel, J., Lehnert, W.

“…Time-dependent measurements of cell impedance of a HT-PEFC based on ABPBI were performed at constant frequencies close to the high-frequency (h.f.) intercept…”
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Measurement and modelling of tropospheric reactive halogen species over the tropical Atlantic Ocean by Mahajan, A. S., Plane, J. M. C., Oetjen, H., Mendes, L., Saunders, R. W., Saiz-Lopez, A., Jones, C. E., Carpenter, L. J., McFiggans, G. B.

“…Although tropospheric reactive halogen chemistry is well studied in coastal and polar environments, the presence of halogens over the open ocean environment…”
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The CU Airborne MAX-DOAS instrument: vertical profiling of aerosol extinction and trace gases by Baidar, S, Oetjen, H, Coburn, S, Dix, B, Ortega, I, Sinreich, R, Volkamer, R

“…The University of Colorado Airborne Multi-Axis Differential Optical Absorption Spectroscopy (CU AMAX-DOAS) instrument uses solar stray light to detect and…”
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Modeling the weekly cycle of NOx and CO emissions and their impacts on O3 in the Los Angeles‐South Coast Air Basin during the CalNex 2010 field campaign by Kim, S.‐W., McDonald, B. C., Baidar, S., Brown, S. S., Dube, B., Ferrare, R. A., Frost, G. J., Harley, R. A., Holloway, J. S., Lee, H.‐J., McKeen, S. A., Neuman, J. A., Nowak, J. B., Oetjen, H., Ortega, I., Pollack, I. B., Roberts, J. M., Ryerson, T. B., Scarino, A. J., Senff, C. J., Thalman, R., Trainer, M., Volkamer, R., Wagner, N., Washenfelder, R. A., Waxman, E., Young, C. J.

“…We developed a new nitrogen oxide (NOx) and carbon monoxide (CO) emission inventory for the Los Angeles‐South Coast Air Basin (SoCAB) expanding the Fuel‐based…”
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Weakening of the weekend ozone effect over California's South Coast Air Basin by Baidar, S., Hardesty, R. M., Kim, S.-W., Langford, A. O., Oetjen, H., Senff, C. J., Trainer, M., Volkamer, R.

“…We have observed lower nitrogen dioxide (NO2) and ozone (O3) during a hot weekend (summer 2010) from aircraft over the entire South Coast Air Basin (SoCAB)…”
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FORUM: Unique Far-Infrared Satellite Observations to Better Understand How Earth Radiates Energy to Space by Palchetti, L., Brindley, H., Bantges, R., Buehler, S. A., Camy-Peyret, C., Carli, B., Cortesi, U., Del Bianco, S., Di Natale, G., Dinelli, B. M., Feldman, D., Huang, X. L., C.-Labonnote, L., Libois, Q., Maestri, T., Mlynczak, M. G., Murray, J. E., Oetjen, H., Ridolfi, M., Riese, M., Russell, J., Saunders, R., Serio, C.

“…The outgoing longwave radiation (OLR) emitted to space is a fundamental component of the Earth’s energy budget. There are numerous, entangled physical…”
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Observations of iodine monoxide columns from satellite by Schönhardt, A., Richter, A., Wittrock, F., Kirk, H., Oetjen, H., Roscoe, H. K., Burrows, J. P.

“…Iodine species in the troposphere are linked to ozone depletion and new particle formation. In this study, a full year of iodine monoxide (IO) columns…”
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Durability of ABPBI-based MEAs for High Temperature PEMFCs at Different Operating Conditions by Wannek, C., Kohnen, B., Oetjen, H.-F., Lippert, H., Mergel, J.

“…High temperature PEMFCs based on phosphoric acid‐doped ABPBI membranes have been prepared and characterised. At 160 °C and ambient pressure fuel cell power…”
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MAX-DOAS measurements of atmospheric trace gases in Ny-Ålesund - Radiative transfer studies and their application by Wittrock, F., Oetjen, H., Richter, A., Fietkau, S., Medeke, T., Rozanov, A., Burrows, J. P.

“…A new approach to derive tropospheric concentrations of some atmospheric trace gases from ground-based UV/vis measurements is described. The instrument,…”
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DOAS measurements of formaldehyde and glyoxal above a south-east Asian tropical rainforest by MacDonald, S. M, Oetjen, H, Mahajan, A. S, Whalley, L. K, Edwards, P. M, Heard, D. E, Jones, C. E, Plane, J. M. C

“…Tropical rainforests act as a huge contributor to the global emissions of biogenic volatile organic compounds (BVOCs). Measurements of their oxidation…”
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The chemistry of OH and HO2 radicals in the boundary layer over the tropical Atlantic Ocean by E. S. Saltzman, J. M. C. Plane, L. J. Carpenter, A. C. Lewis, N. Kaaden, K. A. Read, H. Oetjen, A. Mahajan, J. D. Lee, A. Goddard, K. L. Furneaux, L. K. Whalley, A. Wiedensohler, D. E. Heard

“…Fluorescence Assay by Gas Expansion (FAGE) has been used to detect ambient levels of OH and HO2 radicals at the Cape Verde Atmospheric Observatory, located in…”
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Comparison of box-air-mass-factors and radiances for Multiple-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) geometries calculated from different UV/visible radiative transfer models by Wagner, T., Burrows, J. P., Deutschmann, T., Dix, B., von Friedeburg, C., Frieß, U., Hendrick, F., Heue, K.-P., Irie, H., Iwabuchi, H., Kanaya, Y., Keller, J., McLinden, C. A., Oetjen, H., Palazzi, E., Petritoli, A., Platt, U., Postylyakov, O., Pukite, J., Richter, A., van Roozendael, M., Rozanov, A., Rozanov, V., Sinreich, R., Sanghavi, S., Wittrock, F.

“…The results of a comparison exercise of radiative transfer models (RTM) of various international research groups for Multiple AXis Differential Optical…”
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Iodine-mediated coastal particle formation: an overview of the Reactive Halogens in the Marine Boundary Layer (RHaMBLe) Roscoff coastal study by McFiggans, G., Bale, C. S. E., Ball, S. M., Beames, J. M., Bloss, W. J., Carpenter, L. J., Dorsey, J., Dunk, R., Flynn, M. J., Furneaux, K. L., Gallagher, M. W., Heard, D. E., Hollingsworth, A. M., Hornsby, K., Ingham, T., Jones, C. E., Jones, R. L., Kramer, L. J., Langridge, J. M., Leblanc, C., LeCrane, J.-P., Lee, J. D., Leigh, R. J., Longley, I., Mahajan, A. S., Monks, P. S., Oetjen, H., Orr-Ewing, A. J., Plane, J. M. C., Potin, P., Shillings, A. J. L., Thomas, F., von Glasow, R., Wada, R., Whalley, L. K., Whitehead, J. D.

“…This paper presents a summary of the measurements made during the heavily-instrumented Reactive Halogens in the Marine Boundary Layer (RHaMBLe) coastal study…”
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Measurements and modelling of molecular iodine emissions, transport and photodestruction in the coastal region around Roscoff by Leigh, R. J., Ball, S. M., Whitehead, J., Leblanc, C., Shillings, A. J. L., Mahajan, A. S., Oetjen, H., Lee, J. D., Jones, C. E., Dorsey, J. R., Gallagher, M., Jones, R. L., Plane, J. M. C., Potin, P., McFiggans, G.

“…Iodine emissions from the dominant six macroalgal species in the coastal regions around Roscoff, France, have been modelled to support the Reactive Halogens in…”
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Retrieval of Tropospheric Water Vapor From Airborne Far‐Infrared Measurements: A Case Study by Warwick, L., Brindley, H., Di Roma, A., Fox, S., Havemann, S., Murray, J., Oetjen, H., Price, H. C., Schüttemeyer, D., Sgheri, L., Tiddeman, D. A.

“…We describe studies undertaken in support of the Far‐infrared Outgoing Radiation Understanding and Monitoring mission, European Space Agency's ninth Earth…”
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Components for PEM fuel cell systems using hydrogen and CO containing fuels by Divisek, J., Oetjen, H.-F., Peinecke, V., Schmidt, V.M., Stimming, U.

“…Proton exchange membrane fuel cells (PEMFC) show a significant performance drop in CO containing hydrogen as fuel gas in comparison to pure hydrogen. The lower…”
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Overview: oxidant and particle photochemical processes above a south-east Asian tropical rainforest (the OP3 project): introduction, rationale, location characteristics and tools by Hewitt, C. N., Lee, J. D., MacKenzie, A. R., Barkley, M. P., Carslaw, N., Carver, G. D., Chappell, N. A., Coe, H., Collier, C., Commane, R., Davies, F., Davison, B., DiCarlo, P., Di Marco, C. F., Dorsey, J. R., Edwards, P. M., Evans, M. J., Fowler, D., Furneaux, K. L., Gallagher, M., Guenther, A., Heard, D. E., Helfter, C., Hopkins, J., Ingham, T., Irwin, M., Jones, C., Karunaharan, A., Langford, B., Lewis, A. C., Lim, S. F., MacDonald, S. M., Mahajan, A. S., Malpass, S., McFiggans, G., Mills, G., Misztal, P., Moller, S., Monks, P. S., Nemitz, E., Nicolas-Perea, V., Oetjen, H., Oram, D. E., Palmer, P. I., Phillips, G. J., Pike, R., Plane, J. M. C., Pugh, T., Pyle, J. A., Reeves, C. E., Robinson, N. H., Stewart, D., Stone, D., Whalley, L. K., Yin, X.

“…In April–July 2008, intensive measurements were made of atmospheric composition and chemistry in Sabah, Malaysia, as part of the "Oxidant and particle…”
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Recent developments of the measurement of the methanol permeation in a direct methanol fuel cell by Dohle, H, Divisek, J, Mergel, J, Oetjen, H.F, Zingler, C, Stolten, D

“…The performance and the efficiency of direct methanol fuel cells (DMFCs) are affected by the methanol permeation from the anode to the cathode. A widely used…”
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The 2005 and 2006 DANDELIONS NO2 and aerosol intercomparison campaigns by Brinksma, E. J., Pinardi, G., Volten, H., Braak, R., Richter, A., Schönhardt, A., van Roozendael, M., Fayt, C., Hermans, C., Dirksen, R. J., Vlemmix, T., Berkhout, A. J. C., Swart, D. P. J., Oetjen, H., Wittrock, F., Wagner, T., Ibrahim, O. W., de Leeuw, G., Moerman, M., Curier, R. L., Celarier, E. A., Cede, A., Knap, W. H., Veefkind, J. P., Eskes, H. J., Allaart, M., Rothe, R., Piters, A. J. M., Levelt, P. F.

“…Dutch Aerosol and Nitrogen Dioxide Experiments for Validation of OMI and SCIAMACHY (DANDELIONS) is a project that encompasses validation of spaceborne…”
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