Now showing items 1-12 of 12

    • Ash and fine-mode particle mass profiles from EARLINET-AERONET observations over central Europe after the eruptions of the Eyjafjallajökull volcano in 2010 

      Ansmann, A.; Tesche, Matthias; Seifert, P.; Gross, Silke; Freudenthaler, V.; Apituley, A.; Wilson, K. M.; Serikov, I.; Linné, H.; Heinold, B.; Hiebsch, A.; Schnell, F.; Schmidt, J.; Mattis, I.; Wandinger, U.; Wiegner, M. (2011-01-01)
      A combined lidar-photometer method that permits the retrieval of vertical profiles of ash and non-ash (fine-mode) particle mass concentrations is presented. By using a polarization lidar, the contributions of non-ash and ...
    • Characterization of the planetary boundary layer during SAMUM-2 by means of lidar measurements 

      Gross, Silke; Gasteiger, Josef; Freudenthaler, Volker; Wiegner, Matthias; Geiss, Alexander; Schladitz, Alexander; Toledano, Carlos; Kandler, Konrad; Tesche, Matthias; Ansmann, Albert; Wiedensohler, Alfred (2011-09-01)
      Measurements with two Raman-depolarization lidars of the Meteorological Institute of the Ludwig-Maximilians-Universität, München, Germany, performed during SAMUM-2, were used to characterize the planetary boundary layer ...
    • Doppler lidar studies of heat island effects on vertical mixing of aerosols during SAMUM-2 

      Engelmann, Ronny; Ansmann, Albert; Horn, Stefan; Seifert, Patric; Althausen, Dietrich; Tesche, Matthias; Esselborn, Michael; Fruntke, Julia; Lieke, Kirsten; Freudenthaler, Volker; Gross, Silke (2011-09-01)
      A wind Doppler lidar was deployed next to three aerosol lidars during the SAMUM-2 campaign on the main island of Cape Verde. The effects of the differential heating of the island and the surrounding ocean and the orographic ...
    • EARLINET observations of the Eyjafjallajokull ash plume over Europe 

      Pappalardo, Gelsomina; Amodeo, Aldo; Ansmann, Albert; Apituley, Arnoud; Alados Arboledas, Lucas; Balis, Dimitris; Boeckmann, Christine; Chaikovsky, Anatoli; Comeron, Adolfo; D'Amico, Giuseppe; De Tomasi, Ferdinando; Freudenthaler, Volker; Giannakaki, Elina; Giunta, Aldo; Grigorov, Ivan; Gustafsson, Ove; Gross, Silke; Haeffelin, Martial; Iarlori, Marco; Kinne, Stefan; Linne, Holger; Madonna, Fabio; Mamouri, Rodanthi; Mattis, Ina; McAuliffe, Michael; Molero, Francisco; Mona, Lucia; Mueller, D.; Mitev, Valentin; Nicolae, Doina; Papayannis, Alexandros; Perrone, Maria Rita; Pietruczuk, Aleksander; Pujadas, Manuel; Putaud, Jean-Philippe; Ravetta, Francois; Rizi, Vincenzo; Serikov, Ilya; Sicard, Michael; Simeonov, Valentin; Spinelli, Nicola; Stebel, Kerstin; Trickl, Thomas; Wandinger, U.; Wang, Xuan; Wagner, Frank; Wiegner, Matthias (SPIE, 2010)
      EARLINET, the European Aerosol Research Lidar NETwork, established in 2000, is the first coordinated lidar network for tropospheric aerosol study on the continental scale. The network activity is based on scheduled ...
    • Ice formation in ash-influenced clouds after the eruption of the Eyjafjallajkull volcano in April 2010 

      Seifert, P.; Ansmann, A.; Gross, Silke; Freudenthaler, V.; Heinold, B.; Hiebsch, A.; Mattis, I.; Schmidt, J.; Schnell, F.; Tesche, Matthias; Wandinger, U.; Wiegner, M. (2011-10-27)
      The influence of volcanic ash on heterogeneous ice nucleation in tropospheric clouds is investigated on the basis of 90 observed cloud cases. The clouds were observed with polarization lidars at the two central-European ...
    • In situ aerosol characterization at Cape Verde. Part 2 : Parametrization of relative humidity- and wavelength-dependent aerosol optical properties 

      Schladitz, Alexander; Müller, Thomas; Nordmann, Stephan; Tesche, Matthias; Gross, Silke; Freudenthaler, Volker; Gasteiger, Josef; Wiedensohler, Alfred (2011-09-01)
      An observation-based numerical study of humidity-dependent aerosol optical properties of mixed marine and Saharan mineral dust aerosol is presented. An aerosol model was developed based on measured optical and microphysical ...
    • Microphysical and optical properties of dust and tropical biomass burning aerosol layers in the Cape Verde region-an overview of the airborne in situ and lidar measurements during SAMUM-2 

      Weinzierl, Bernadett; Sauer, Daniel; Esselborn, Michael; Petzold, Andreas; Veira, Andreas; Rose, Maximilian; Mund, Susanne; Wirth, Martin; Ansmann, Albert; Tesche, Matthias; Gross, Silke; Freudenthaler, Volker (2011-09-01)
      In the framework of the Saharan Mineral Dust Experiment (SAMUM) airborne High Spectral Resolution Lidar and in situ measurements of the particle size, aerosol mixing state and absorption coefficient were conducted. Here, ...
    • Modelling lidar-relevant optical properties of complex mineral dust aerosols 

      Gasteiger, Josef; Wiegner, Matthias; Gross, Silke; Freudenthaler, Volker; Toledano, Carlos; Tesche, Matthias; Kandler, Konrad (2011-09-01)
      We model lidar-relevant optical properties of mineral dust aerosols and compare the modelling results with optical properties derived from lidar measurements during the SAMUM field campaigns. The Discrete Dipole Approximation ...
    • Optical and microphysical properties of smoke over Cape Verde inferred from multiwavelength lidar measurements 

      Tesche, Matthias; Mueller, D.; Gross, Silke; Ansmann, Albert; Althausen, Dietrich; Freudenthaler, Volker; Weinzierl, Bernadett; Veira, Andreas; Petzold, Andreas (2011-09)
      Lidar measurements of mixed dust/smoke plumes over the tropical Atlantic ocean were carried out during the winter campaign of SAMUM-2 at Cape Verde. Profiles of backscatter and extinction coefficients, lidar ratios, and ...
    • Profiling of Saharan dust and biomass-burning smoke with multiwavelength polarization Raman lidar at Cape Verde 

      Tesche, Matthias; Gross, Silke; Ansmann, Albert; Mueller, D.; Althausen, Dietrich; Freudenthaler, Volker; Esselborn, Michael (2011-09)
      Extensive lidar measurements of Saharan dust and biomass-burning smoke were performed with one airborne and three ground-based instruments in the framework of the second part of the SAharan Mineral dUst experiMent (SAMUM-2a) ...
    • Regional modelling of Saharan dust and biomass-burning smoke. Part 1 : Model description and evaluation 

      Heinold, Bernd; Tegen, Ina; Schepanski, Kerstin; Tesche, Matthias; Esselborn, Michael; Freudenthaler, Volker; Gross, Silke; Kandler, Konrad; Knippertz, Peter; Mueller, D.; Schladitz, Alexander; Toledano, Carlos; Weinzierl, Bernadett; Ansmann, Albert; Althausen, Dietrich; Müller, Thomas; Petzold, Andreas; Wiedensohler, Alfred (2011-09)
      The spatio-temporal evolution of the Saharan dust and biomass-burning plume during the SAMUM-2 field campaign in January and February 2008 is simulated at 28 km horizontal resolution with the regional model-system COSMO-MUSCAT. ...
    • Thermal IR radiative properties of mixed mineral dust and biomass aerosol during SAMUM-2 

      Köhler, Claas H.; Trautmann, Thomas; Lindermeir, Erwin; Vreeling, Willem; Lieke, Kirsten; Kandler, Konrad; Weinzierl, Bernadett; Gross, Silke; Tesche, Matthias; Wendisch, Manfred (2011-09-01)
      Ground-based high spectral resolution measurements of downwelling radiances from 800 to 1200cm-1 were conducted between 20 January and 6 February 2008 within the scope of the SAMUM-2 field experiment. We infer the spectral ...