Browsing Research publications by Author "Ansmann, Albert"

Now showing items 21-37 of 37

    • Optimization of lidar data processing : a goal of the EARILINET-ASOS project 

      Amodeo, Aldo; Mattis, Ina; Boeckmann, Christine; D'Amico, Giuseppe; Mueller, D.; Osterloh, Lukas; Chaikovsky, Anatoly; Pappalardo, Gelsomina; Ansmann, Albert; Apituley, Arnoud; Alados-Arboledas, Lucas; Balis, Dimitris; Comeron, Adolfo; Freudenthaler, Volker; Mitev, Valentin; Nicolae, Doina; Papayannis, Alexandros; Perrone, Maria Rita; Pietruezuk, Aleksander; Pujadas, Manuel; Putaud, Jean-Philippe; Ravetta, Francois; Rizi, Vincenzo; Simeonovs, Valentin; Spinelli, Nicola; Stebel, Kersten; Stoyanov, Dimitar; Trickl, Thomas; Wiegner, Matthias (SPIE, 2007)
      EARLINET-ASOS (European Aerosol Research Lidar Network - Advanced Sustainable Observation System) is a 5-year EC Project started in 2006. Based on the EARLINET infrastructure, it will provide appropriate tools to improve ...

    • Particle backscatter, extinction, and lidar ratio profiling with Raman lidar in south and north China 

      Tesche, Matthias; Ansmann, Albert; Mueller, D.; Althausen, Dietrich; Engelmann, Ronny; Hu, Min; Zhang, Yuanghang (2007-09-01)
      Aerosol Raman lidar observations of profiles of the particle extinction and backscatter coefficients and the respective extinction-to-backscatter ratio (lidar ratio) were performed under highly polluted conditions in the ...

    • Portable Raman Lidar Polly(XT) for Automated Profiling of Aerosol Backscatter, Extinction, and Depolarization 

      Althausen, Dietrich; Engelmann, Ronny; Baars, Holger; Heese, Birgit; Ansmann, Albert; Mueller, D.; Komppula, Mika (2009-11)
      Two versions of the portable aerosol Raman lidar system (Polly) are presented. First, the two-channel prototype is depicted. It has been developed for the independent and simultaneous determination of particle backscatter ...

    • 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) ...

    • Raman lidar for monitoring of aerosol pollution in the free troposphere 

      Mueller, D.; Mattis, Ina; Ansmann, Albert; Wandinger, U.; Althausen, D. (Springer Nature, 2008)
      Geometrical, optical, and microphysical properties of free-tropospheric pollution have been determined with multiwavelength Raman lidar at Leipzig, Germany. Long-term observations carried out at fixed times (three times ...

    • 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. ...

    • Regional Saharan dust modelling during the SAMUM 2006 campaign 

      Heinold, Bernd; Tegen, Ina; Esselborn, Michael; Kandler, Konrad; Knippertz, Peter; Mueller, D.; Schladitz, Alexander; Tesche, Matthias; Weinzierl, Bernadett; Ansmann, Albert; Althausen, Dietrich; Laurent, Benoit; Massling, Andreas; Mueller, Thomas; Petzold, Andreas; Schepanski, Kerstin; Wiedensohler, Alfred (2009-02)
      The regional dust model system LM-MUSCAT-DES was developed in the framework of the SAMUM project. Using the unique comprehensive data set of near-source dust properties during the 2006 SAMUM field campaign, the performance ...

    • Retrieval of ice-nucleating particle concentrations from lidar observations and comparison with UAV in situ measurements 

      Marinou, Eleni; Tesche, Matthias; Nenes, Athanasios; Ansmann, Albert; Schrod, Jann; Mamali, Dimitra; Tsekeri, Alexandra; Pikridas, Michael; Baars, Holger; Engelmann, Ronny; Voudouri, Kalliopi-Artemis; Solomos, Stavros; Sciare, Jean; Gross, Silke; Ewald, Florian; Amiridis, Vassilis (2019-09-09)
      Aerosols that are efficient ice-nucleating particles (INPs) are crucial for the formation of cloud ice via heterogeneous nucleation in the atmosphere. The distribution of INPs on a large spatial scale and as a function of ...

    • Retrieval of microphysical properties of aerosol particles from one-wavelength Raman lidar and multiwavelength Sun photometer observations 

      Tesche, Matthias; Mueller, D.; Ansmann, Albert; Hu, Min; Zhang, Yuanghang (2008-08)
      Aerosol Raman lidar observations of particle extinction and backscatter coefficients at 532 nm are combined with Sun photometer observations of the particle optical depth at six wavelengths from 381-1044 nm to derive ...

    • Saharan Mineral Dust Experiments SAMUM-1 and SAMUM-2 : what have we learned? 

      Ansmann, Albert; Petzold, Andreas; Kandler, Konrad; Tegen, Ina; Wendisch, Manfred; Mueller, D.; Weinzierl, Bernadett; Mueller, Thomas; Heintzenberg, Jost (2011-09)
      Two comprehensive field campaigns were conducted in 2006 and 2008 in the framework of the Saharan Mineral Dust Experiment (SAMUM) project. The relationship between chemical composition, shape morphology, size distribution ...

    • Siberian forest-fire smoke observed over central Europe in spring/summer 2003 in the framework of earlinet 

      Mattis, I.; Mueller, D.; Ansmann, Albert; Wandinger, U.; Murayama, T.; Damoah, R. (ESA PUBLICATIONS DIVISION C/O ESTEC, 2004)
      We observed unexpectedly high particle backscattering and extinction in the free troposphere over Leipzig, Germany, in spring/summer 2003. Optical depth was about four times higher than in the respective months of 2000-2002. ...

    • The unprecedented 2017-2018 stratospheric smoke event : Decay phase and aerosol properties observed with the EARLINET 

      Baars, Holger; Ansmann, Albert; Ohneiser, Kevin; Haarig, Moritz; Engelmann, Ronny; Althausen, Dietrich; Hanssen, Ingrid; Gausa, Michael; Pietruczuk, Aleksander; Szkop, Artur; Stachlewska, Iwona S.; Wang, Dongxiang; Reichardt, Jens; Skupin, Annett; Mattis, Ina; Trickl, Thomas; Vogelmann, Hannes; Navas-Guzmán, Francisco; Haefele, Alexander; Acheson, Karen; Ruth, Albert A.; Tatarov, Boyan; Müller, Detlef; Hu, Qiaoyun; Podvin, Thierry; Goloub, Philippe; Veselovskii, Igor; Pietras, Christophe; Haeffelin, Martial; Fréville, Patrick; Sicard, Michaël; Comerón, Adolfo; García, Alfonso Javier Fernández; Menéndez, Francisco Molero; Córdoba-Jabonero, Carmen; Guerrero-Rascado, Juan Luis; Alados-Arboledas, Lucas; Bortoli, Daniele; Costa, Maria João; Dionisi, Davide; Liberti, Gian Luigi; Wang, Xuan; Sannino, Alessia; Papagiannopoulos, Nikolaos; Boselli, Antonella; Mona, Lucia; D'Amico, Giuseppe; Romano, Salvatore; Perrone, Maria Rita; Belegante, Livio; Nicolae, Doina; Grigorov, Ivan; Gialitaki, Anna; Amiridis, Vassilis; Soupiona, Ourania; Papayannis, Alexandros; Mamouri, Rodanthi Elisaveth; Nisantzi, Argyro; Heese, Birgit; Hofer, Julian; Schechner, Yoav Y.; Wandinger, Ulla; Pappalardo, Gelsomina (2019-12-13)
      Six months of stratospheric aerosol observations with the European Aerosol Research Lidar Network (EARLINET) from August 2017 to January 2018 are presented. The decay phase of an unprecedented, record-breaking stratospheric ...

    • Vertical profiles of atmospheric particle parameters measured with a scanning 6-wavelength 11-channel aerosol lidar 

      Althausen, D.; Mueller, D.; Ansmann, Albert; Wandinger, U.; Franke, K.; Wagner, F. (SPIE, 2003)
      The transportable scanning six-wavelength eleven-channel aerosol lidar of the Insitute for Tropospheric Research represents the most powerful tool for a comprehensive characterization of atmospheric particles with lidar. ...

    • Vertical profiles of pure dust and mixed smoke-dust plumes inferred from inversion of multiwavelength Raman/polarization lidar data and comparison to AERONET retrievals and in situ observations 

      Mueller, D.; Veselovskii, Igor; Kolgotin, Alexei; Tesche, Matthias; Ansmann, Albert; Dubovik, Oleg (2013-05-10)
      We present for the first time vertical profiles of microphysical properties of pure mineral dust (largely unaffected by any other aerosol types) on the basis of the inversion of optical data collected with multiwavelength ...

    • Vertical profiling of convective dust plumes in southern Morocco during SAMUM 

      Ansmann, Albert; Tesche, Matthias; Knippertz, Peter; Bierwirth, Eike; Althausen, Dietrich; Mueller, D.; Schulz, Oliver (2009-02)
      Lifting of dust particles by dust devils and convective plumes may significantly contribute to the global mineral dust budget. During the Saharan Mineral Dust Experiment (SAMUM) in May-June 2006 vertical profiling of dusty ...

    • Vertical profiling of Saharan dust with Raman lidars and airborne HSRL in southern Morocco during SAMUM 

      Tesche, Matthias; Ansmann, Albert; Mueller, D.; Althausen, Dietrich; Mattis, Ina; Heese, Birgit; Freudenthaler, Volker; Wiegner, Matthias; Esselborn, Michael; Pisani, Gianluca; Knippertz, Peter (2009-02)
      Three ground-based Raman lidars and an airborne high-spectral-resolution lidar (HSRL) were operated during SAMUM 2006 in southern Morocco to measure height profiles of the volume extinction coefficient, the extinction-to ...

    • Volcanic aerosol layers observed with multiwavelength Raman lidar over central Europe in 2008-2009 

      Mattis, Ina; Siefert, Patric; Mueller, D.; Tesche, Matthias; Hiebsch, Anja; Kanitz, Thomas; Schmidt, Joerg; Finger, Fanny; Wandinger, Ulla; Ansmann, Albert (2010-07-22)
      In the framework of regular European Aerosol Research Lidar Network (EARLINET) observations, aerosol layers have been monitored with a multiwavelength aerosol Raman lidar in the upper troposphere and lower stratosphere ...