Search Results - "Leisner, T"

Influence of biodiesel fuel composition on the morphology and microstructure of particles emitted from diesel engines by Savic, N., Rahman, M.M., Miljevic, B., Saathoff, H., Naumann, K.H., Leisner, T., Riches, J., Gupta, B., Motta, N., Ristovski, Z.D.

“…This study investigates the morphology, microstructure and surface composition of Diesel engine exhaust particles. The state of agglomeration, the primary…”
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Ice nucleation activity of agricultural soil dust aerosols from Mongolia, Argentina, and Germany by Steinke, I., Funk, R., Busse, J., Iturri, A., Kirchen, S., Leue, M., Möhler, O., Schwartz, T., Schnaiter, M., Sierau, B., Toprak, E., Ullrich, R., Ulrich, A., Hoose, C., Leisner, T.

“…Soil dust particles emitted from agricultural areas contain considerable mass fractions of organic material. Also, soil dust particles may act as carriers for…”
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Probing ice-nucleation processes on the molecular level using second harmonic generation spectroscopy by Abdelmonem, A, Lützenkirchen, J, Leisner, T

“…We present and characterize a novel setup to apply second harmonic generation (SHG) spectroscopy in total internal reflection geometry (TIR) to heterogeneous…”
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A new temperature- and humidity-dependent surface site density approach for deposition ice nucleation by Steinke, I, Hoose, C, Möhler, O, Connolly, P, Leisner, T

“…Deposition nucleation experiments with Arizona Test Dust (ATD) as a surrogate for mineral dusts were conducted at the AIDA cloud chamber at temperatures…”
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Laboratory evidence for volume-dominated nucleation of ice in supercooled water microdroplets by Duft, D., Leisner, T.

“…We report on measurements of the rate of homogeneous ice nucleation in supercooled water microdroplets levitated in an electrodynamic balance. By comparison of…”
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A comprehensive laboratory study on the immersion freezing behavior of illite NX particles: a comparison of 17 ice nucleation measurement techniques by Hiranuma, N, Augustin-Bauditz, S, Bingemer, H, Budke, C, Curtius, J, Danielczok, A, Diehl, K, Dreischmeier, K, Ebert, M, Frank, F

“…Immersion freezing is the most relevant heterogeneous ice nucleation mechanism through which ice crystals are formed in mixed-phase clouds. In recent years, an…”
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The accommodation coefficient of water molecules on ice – cirrus cloud studies at the AIDA simulation chamber by Skrotzki, J, Connolly, P, Schnaiter, M, Saathoff, H, Möhler, O, Wagner, R, Niemand, M, Ebert, V, Leisner, T

“…Cirrus clouds and their impact on the Earth's radiative budget are subjects of current research. The processes governing the growth of cirrus ice particles are…”
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Ice cloud processing of ultra-viscous/glassy aerosol particles leads to enhanced ice nucleation ability by Wagner, R, Möhler, O, Saathoff, H, Schnaiter, M, Skrotzki, J, Leisner, T, Wilson, T. W, Malkin, T. L, Murray, B. J

“…The ice nucleation potential of airborne glassy aqueous aerosol particles has been investigated by controlled expansion cooling cycles in the AIDA aerosol and…”
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In situ characterization of mixed phase clouds using the Small Ice Detector and the Particle Phase Discriminator by Vochezer, P, Järvinen, E, Wagner, R, Kupiszewski, P, Leisner, T, Schnaiter, M

“…Mixed phase clouds (MPCs) represent a great source of uncertainty for both climate predictions and weather forecasts. In particular, there is still a lack of…”
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Charge induced stability of water droplets in subsaturated environment by Nielsen, J K, Maus, C, Rzesanke, D, Leisner, T

“…Atmospheric liquid and solid water particles are stabilized if they are coated with either negative or positive electric charge. The surface charge causes an…”
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CIB1 prevents nuclear GAPDH accumulation and non-apoptotic tumor cell death via AKT and ERK signaling by Leisner, T M, Moran, C, Holly, S P, Parise, L V

“…CIB1 is a 22-kDa regulatory protein previously implicated in cell survival and proliferation. However, the mechanism by which CIB1 regulates these processes is…”
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New cloud chamber experiments on the heterogeneous ice nucleation ability of oxalic acid in the immersion mode by Wagner, R., Möhler, O., Saathoff, H., Schnaiter, M., Leisner, T.

“…The heterogeneous ice nucleation ability of oxalic acid in the immersion mode has been investigated by controlled expansion cooling runs with airborne, ternary…”
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Laboratory investigations of mineral dust near-backscattering depolarization ratios by Järvinen, E., Kemppinen, O., Nousiainen, T., Kociok, T., Möhler, O., Leisner, T., Schnaiter, M.

“…Recently, there has been increasing interest to derive the fractions of fine- and coarse-mode dust particles from polarization lidar measurements. For this,…”
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Ice nucleation properties of fine ash particles from the Eyjafjallajökull eruption in April 2010 by Steinke, I., Möhler, O., Kiselev, A., Niemand, M., Saathoff, H., Schnaiter, M., Skrotzki, J., Hoose, C., Leisner, T.

“…During the eruption of the Eyjafjallajökull volcano in the south of Iceland in April/May 2010, about 40 Tg of ash mass were emitted into the atmosphere. It was…”
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Technical Note: Using a high finesse optical resonator to provide a long light path for differential optical absorption spectroscopy: CE-DOAS by Meinen, J, Thieser, J, Platt, U, Leisner, T

“…Cavity enhanced methods in absorption spectroscopy have seen a considerable increase in popularity during the past decade. Especially Cavity Enhanced…”
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Laser filament-induced aerosol formation by Saathoff, H, Henin, S, Stelmaszczyk, K, Petrarca, M, Delagrange, R, Hao, Z, Lüder, J, Möhler, O, Petit, Y, Rohwetter, P, Schnaiter, M, Kasparian, J, Leisner, T, Wolf, J.-P, Wöste, L

“…Using the aerosol and cloud simulation chamber AIDA, we investigated the laser filament induced particle formation in ambient air, humid synthetic air, humid…”
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Experimental quantification of contact freezing in an electrodynamic balance by Hoffmann, N, Kiselev, A, Rzesanke, D, Duft, D, Leisner, T

“…Heterogeneous nucleation of ice in a supercooled water droplet induced by external contact with a dry aerosol particle has long been known to be more effective…”
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Broadband Cavity Enhanced Differential Optical Absorption Spectroscopy (CE-DOAS) – applicability and corrections by Platt, U., Meinen, J., Pöhler, D., Leisner, T.

“…Atmospheric trace gas measurements by cavity assisted long-path absorption spectroscopy are an emerging technology. An interesting approach is the combination…”
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Pump-probe differential Lidar to quantify atmospheric supersaturation and particle-forming trace gases by Chagas, J. C. S., Leisner, T., Kasparian, J.

“…We propose a pump-probe differential Lidar technique to remotely map the ability of the atmosphere to undergo particle condensation, which depends on the…”
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High variability of the heterogeneous ice nucleation potential of oxalic acid dihydrate and sodium oxalate by Wagner, R., Möhler, O., Saathoff, H., Schnaiter, M., Leisner, T.

“…The heterogeneous ice nucleation potential of airborne oxalic acid dihydrate and sodium oxalate particles in the deposition and condensation mode has been…”
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