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Browsing by Author "Ansmann, A."
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The 16 April 2010 major volcanic ash plume over central Europe : EARLINET lidar and AERONET photometer observations at Leipzig and Munich, Germany
Ansmann, A.; Tesche, Matthias; Gross, S.; Freudenthaler, V.; Seifert, P.; Hiebsch, A.; Schmidt, J.; Wandinger, U.; Mattis, I.; Mueller, D.; Wiegner, M. (2010-07-15)The optically thickest volcanic ash plume ever measured over Germany was monitored with multiwavelength Raman lidars and Sun photometer at Leipzig and Munich. When this ash layer, originating from the Eyjafjoll eruptions ... -
Aerosol profiling with lidar in the Amazon Basin during the wet and dry season
Baars, H.; Ansmann, A.; Althausen, D.; Engelmann, R.; Heese, B.; Mueller, D.; Artaxo, P.; Paixao, M.; Pauliquevis, T.; Souza, R. (2012-11-03)For the first time, multiwavelength polarization Raman lidar observations of optical and microphysical particle properties over the Amazon Basin are presented. The fully automated advanced Raman lidar was deployed 60 km ... -
Aerosol-type-dependent lidar ratios observed with Raman lidar
Mueller, D.; Ansmann, A.; Mattis, I.; Tesche, Matthias; Wandinger, U.; Althausen, D.; Pisani, G. (2007-08-17)[1] We summarize our Raman lidar observations which were carried out in Europe, Asia, and Africa during the past 10 years, with focus on particle extinction-to-backscatter ratios ( lidar ratios) and (A) over circle ngstrom ... -
Airborne observations of the Eyjafjalla volcano ash cloud over Europe during air space closure in April and May 2010
Schumann, U.; Weinzierl, B.; Reitebuch, O.; Schlager, H.; Minikin, A.; Forster, C.; Baumann, R.; Sailer, T.; Graf, K.; Mannstein, H.; Voigt, C.; Rahm, S.; Simmet, R.; Scheibe, M.; Lichtenstern, M.; Stock, P.; Rüba, H.; Scḧauble, D.; Tafferner, A.; Rautenhaus, M.; Gerz, T.; Ziereis, H.; Krautstrunk, M.; Mallaun, C.; Gayet, J. F.; Lieke, K.; Kandler, K.; Ebert, M.; Weinbruch, S.; Stohl, A.; Gasteiger, J.; Gro, S.; Freudenthaler, V.; Wiegner, M.; Ansmann, A.; Tesche, Matthias; Olafsson, H.; Sturm, K. (2011-03-11)Airborne lidar and in-situ measurements of aerosols and trace gases were performed in volcanic ash plumes over Europe between Southern Germany and Iceland with the Falcon aircraft during the eruption period of the Eyjafjalla1 ... -
Arctic haze over Central Europe
Heintzenberg, J.; Tuch, T.; Wehner, B.; Wiedensohler, A.; Wex, H.; Ansmann, A.; Mattis, I.; Mueller, D.; Wendisch, M.; Eckhardt, S.; Stohl, A. (2003-07)An extraordinary aerosol situation over Leipzig, Germany in April 2002 was investigated with a comprehensive set of ground-based volumetric and columnar aerosol data, combined with aerosol profiles from lidar, meteorological ... -
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 ... -
Cirrus optical properties observed with lidar, radiosonde, and satellite over the tropical Indian Ocean during the aerosol-polluted northeast and clean maritime southwest monsoon
Seifert, P.; Ansmann, A.; Mueller, D.; Wandinger, U.; Althausen, D.; Heymsfield, A. J.; Massie, S. T.; Schmitt, C. (2007-09-14)Cirrus formation and geometrical and optical properties of tropical cirrus as a function of height and temperature are studied on the basis of INDOEX ( Indian Ocean Experiment) lidar and radiosonde measurements and satellite ... -
Closure study on optical and microphysical properties of a mixed urban and Arctic haze air mass observed with Raman lidar and Sun photometer
Mueller, D.; Mattis, I.; Ansmann, A.; Wehner, B.; Althausen, D.; Wandinger, U.; Dubovik, O. (2004-07)[1] We present a comprehensive optical and microphysical characterization of an intense haze event observed over Leipzig ( 51.3 degreesN, 12.4 degreesE), Germany, in April 2002. This event was characterized by unusually ... -
Comparison of optical and microphysical properties of pure Saharan mineral dust observed with AERONET Sun photometer, Raman lidar, and in situ instruments during SAMUM 2006
Mueller, D.; Lee, K-H.; Gasteiger, J.; Tesche, Matthias; Weinzierl, B.; Kandler, K.; Mueller, T.; Toledano, C.; Otto, S.; Althausen, D.; Ansmann, A. (2012-04-14)The Saharan Mineral Dust Experiment (SAMUM) 2006, Morocco, aimed at the characterization of optical, physical, and radiative properties of Saharan dust. AERONET Sun photometer, several lidars (Raman and high-spectral-resolution ... -
Comparison of the radiative impact of aerosols derived from vertically resolved (lidar) and vertically integrated (Sun photometer) measurements : Example of an Indian aerosol plume
Wagner, F.; Mueller, D.; Ansmann, A. (2001-10-16)Radiative forcing calculations both at the top of the atmosphere (TOA) and at the surface were done for vertically varying particle properties and their approximation through vertically constant properties. The data sets ... -
Daytime operation of a pure rotational Raman lidar by use of a Fabry-Perot interferometer
Arshinov, Y.; Bobrovnikov, S.; Serikov, I.; Ansmann, A.; Wandinger, U.; Althausen, D.; Mattis, I.; Mueller, D. (2005-06-10)We propose to use a Fabry-Perot interferometer (FPI) in a pure rotational Raman lidar to isolate return signals that are due to pure rotational Raman scattering from atmospheric nitrogen against the sky background. The ... -
Dual-wavelength Raman lidar observations of the extinction-to-backscatter ratio of Saharan dust
Mattis, I.; Ansmann, A.; Mueller, D.; Wandinger, U.; Althausen, D. (2002-05-01)[1] For the first time, height profiles of the extinction-to-backscatter ratio (lidar ratio) of desert dust particles were simultaneously measured at 355 and 532 nm. The observations were performed with an advanced Raman ... -
EARLINET observations of the 14-22-May long-range dust transport event during SAMUM 2006 : validation of results from dust transport modelling
Mueller, D.; Heinold, B.; Tesche, Matthias; Tegen, I.; Althausen, D.; Arboledas, L. Alados; Amiridis, V.; Amodeo, A.; Ansmann, A.; Balis, D.; Comeron, A.; D'amico, G.; Gerasopoulos, E.; Guerrero-Rascado, J. L.; Freudenthaler, V.; Giannakaki, E.; Heese, B.; Iarlori, M.; Knippertz, P.; Mamouri, R. E.; Mona, L.; Papayannis, A.; Pappalardo, G.; Perrone, R. -M.; Pisani, G.; Rizi, V.; Sicard, M.; Spinelli, N.; Tafuro, A.; Wiegner, M. (2009-02)We observed a long-range transport event of mineral dust from North Africa to South Europe during the Saharan Mineral Dust Experiment (SAMUM) 2006. Geometrical and optical properties of that dust plume were determined with ... -
European pollution outbreaks during ACE 2 : Lofted aerosol plumes observed with Raman lidar at the Portuguese coast
Ansmann, A.; Wagner, F.; Althausen, D.; Mueller, D.; Herber, A.; Wandinger, U. (2001-09-27)During the Second Aerosol Characterization Experiment (ACE 2) in the summer of 1997, four pollution outbreaks from the European continent were monitored at Sagres (37 degreesN, 9 degreesW), Portugal, by applying the Raman ... -
European pollution outbreaks during ACE 2 : Microphysical particle properties and single-scattering albedo inferred from multiwavelength lidar observations
Mueller, D.; Ansmann, A.; Wagner, F.; Franke, K.; Althausen, D. (2002-08-06)We present vertically resolved physical particle properties and the single-scattering albedo at 532 nm of pollution plumes advected from the European continent out over the Atlantic Ocean. The parameters follow from the ... -
European pollution outbreaks during ACE 2 : Optical particle properties inferred from multiwavelength lidar and star-Sun photometry
Ansmann, A.; Wagner, F.; Mueller, D.; Althausen, D.; Herber, A.; von Hoyningen-Huene, W.; Wandinger, U. (2002-08)[1] On the basis of multiwavelength backscatter and 532-nm extinction profiling with lidar at Sagres (37degreesN, 9degreesW), southern Portugal, and optical depth observations with a star photometer at the lidar site and ... -
Evaluation of the Lidar/Radiometer Inversion Code (LIRIC) to determine microphysical properties of volcanic and desert dust
Wagner, J.; Ansmann, A.; Wandinger, U.; Seifert, P.; Schwarz, A.; Tesche, Matthias; Chaikovsky, A.; Dubovik, O. (2013-07-22)The Lidar/Radiometer Inversion Code (LIRIC) combines the multiwavelength lidar technique with sun/sky photometry and allows us to retrieve vertical profiles of particle optical and microphysical properties separately for ... -
Evolution of the ice phase in tropical altocumulus : SAMUM lidar observations over Cape Verde
Ansmann, A.; Tesche, Matthias; Seifert, P.; Althausen, D.; Engelmann, R.; Fruntke, J.; Wandinger, U.; Mattis, I.; Mueller, D. (2009-09-16)The formation of the ice phase in tropical altocumulus has been studied with multiwavelength aerosol-cloud Raman lidar, wind Doppler lidar, and radiosonde, providing information on geometrical and optical properties, cloud ... -
Four-dimensional distribution of the 2010 Eyjafjallajökull volcanic cloud over Europe observed by EARLINET
Pappalardo, G.; Mona, L.; D'Amico, G.; Wandinger, U.; Adam, M.; Amodeo, A.; Ansmann, A.; Apituley, A.; Alados Arboledas, L.; Balis, D.; Boselli, A.; Bravo-Aranda, J. A.; Chaikovsky, A.; Comeron, A.; Cuesta, J.; De Tomasi, F.; Freudenthaler, V.; Gausa, M.; Giannakaki, E.; Giehl, H.; Giunta, A.; Grigorov, I.; Groß, S.; Haeffelin, M.; Hiebsch, A.; Iarlori, M.; Lange, D.; Linné, H.; Madonna, F.; Mattis, I.; Mamouri, R. E.; McAuliffe, M. A. P.; Mitev, V.; Molero, F.; Navas-Guzman, F.; Nicolae, D.; Papayannis, A.; Perrone, M. R.; Pietras, C.; Pietruczuk, A.; Pisani, G.; Preißler, J.; Pujadas, M.; Rizi, V.; Ruth, A. A.; Schmidt, J.; Schnell, F.; Seifert, P.; Serikov, I.; Sicard, M.; Simeonov, V.; Spinelli, N.; Stebel, K.; Tesche, Matthias; Trickl, T.; Wang, X.; Wagner, F.; Wiegner, M.; Wilson, K. M. (2013-04-29)The eruption of the Icelandic volcano Eyjafjallaj ökull in April-May 2010 represents a "natural experiment" to study the impact of volcanic emissions on a continental scale. For the first time, quantitative data about the ... -
Ground-based validation of CALIPSO observations of dust and smoke in the Cape Verde region
Tesche, Matthias; Wandinger, U.; Ansmann, A.; Althausen, D.; Mueller, D.; Omar, A. H. (2013-04-16)Ground-based Raman lidar measurements during the second Saharan Mineral Dust Experiment (SAMUM-2) in 2008 were used for validation of measurements of the lidar aboard the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite ...