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Browsing by Author "Engelmann, R."
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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 ... -
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 ... -
Hygroscopic properties and extinction of aerosol particles at ambient relative humidity in South-Eastern China
Eichler, H.; Cheng, Y. F.; Birmili, W.; Nowak, A.; Wiedensohler, A.; Brüggemann, E.; Gnauk, T.; Herrmann, H.; Althausen, D.; Ansmann, A.; Engelmann, R.; Tesche, Matthias; Wendisch, M.; Zhang, Y. H.; Hu, M.; Liu, S.; Zeng, L. M. (2008-08)During the "Program of Regional Integrated Experiments of Air Quality over Pearl River Delta 2004 (PRIDE-PRD2004)" hygroscopic properties of particles in the diameter range 22 nm to 10 μ m were determined. For that purpose, ... -
Meteorological conditions and structures of atmospheric boundary layer in October 2004 over Pearl River Delta area
Fan, Shaojia; Wang, Baomin; Tesche, Matthias; Engelmann, R.; Althausen, A.; Liu, Ji; Zhu, Wei; Fan, Qi; Li, Minghua; Ta, Na; Song, Lili; Leong, Kacheng (2008-08)High-level concentrations of air pollutants usually occur in autumn and winter over Peal River Delta (PRD), China. Atmospheric boundary layer observations were carried out at Qingyuan, Panyu and Xinken in PRD in October ... -
Radiative and dynamic effects of absorbing aerosol particles over the Pearl River Delta, China
Wendisch, M.; Hellmuth, O.; Ansmann, A.; Heintzenberg, J.; Engelmann, R.; Althausen, D.; Eichler, H.; Mueller, D.; Hu, M.; Zhang, Y.; Mao, J. (2008-08)Results are reported from a ground-based measurement campaign conducted in a highly polluted region in southeast of China in October-November 2004. The experiment focused on absorbing aerosol particles and their effects ... -
Saharan dust and heterogeneous ice formation : Eleven years of cloud observations at a central European EARLINET site
Seifert, P.; Ansmann, A.; Mattis, I.; Wandinger, U.; Tesche, Matthias; Engelmann, R.; Mueller, D.; Perez, C.; Haustein, K. (2010-10-19)More than 2300 observed cloud layers were analyzed to investigate the impact of aged Saharan dust on heterogeneous ice formation. The observations were performed with a polarization/Raman lidar at the European Aerosol ... -
Strong particle light absorption over the Pearl River Delta (south China) and Beijing (north China) determined from combined Raman lidar and Sun photometer observations
Mueller, D.; Tesche, Matthias; Eichler, H.; Engelmann, R.; Althausen, D.; Ansmann, A.; Cheng, Y. F.; Zhang, Y. H.; Hu, M. (2006-10-24)[1] Particle size and absorption properties have been determined from combined one-wavelength Raman lidar and Sun photometer measurements in the Pearl River Delta (South China) in October 2004, and in Beijing (North China) ... -
Technical Note: One year of Raman-lidar measurements in Gual Pahari EUCAARI site close to New Delhi in India - Seasonal characteristics of the aerosol vertical structure
Komppula, M.; Mielonen, T.; Arola, A.; Korhonen, K.; Lihavainen, H.; Hyvarinen, A. -P.; Baars, H.; Engelmann, R.; Althausen, D.; Ansmann, A.; Mueller, D.; Panwar, T. S.; Hooda, R. K.; Sharma, V. P.; Kerminen, V. -M.; Lehtinen, K. E. J.; Viisanen, Y. (2012)One year of multi-wavelength (3 backscatter + 2 extinction + 1 depolarization) Raman lidar measurements at Gual Pahari, close to New Delhi, were analysed. The data was split into four seasons: spring (March-May), summer ... -
Vertically resolved separation of dust and smoke over Cape Verde using multiwavelength Raman and polarization lidars during Saharan Mineral Dust Experiment 2008
Tesche, Matthias; Ansmann, A.; Mueller, D.; Althausen, D.; Engelmann, R.; Freudenthaler, V.; Gross, S. (2009-07-08)Multiwavelength aerosol Raman lidar in combination with polarization lidar at Praia (14.9 degrees N, 23.5 degrees W), Cape Verde, is used to separate the optical properties of desert dust and biomass burning particles as ... -
Volcanic ash over Scandinavia originating from the Grímsvötn eruptions in May 2011
Tesche, Matthias; Glantz, P.; Johansson, C.; Norman, M.; Hiebsch, A.; Ansmann, A.; Althausen, D.; Engelmann, R.; Seifert, P. (2012-05-16)A volcanic ash plume that originated from the eruptions of Iceland's Grímsvötn volcano in May 2011 was observed over the Nordic countries using a combination of satellite observations and ground-based measurements. The ... -
Water vapour intercomparison effort in the frame of the Convective and Orographically-induced Precipitation Study
Bhawar, Rohini; Di Girolamo, Paolo; Summa, Donato; Flamant, Cyrille; Althausen, D.; Behrendt, Andreis; Blyth, Alan; Bock, Olivier; Bosser, Pierre; Brooks, Barbara J.; Cacciani, Marco; Crewell, Suzanne; Champollion, Cedric; Davies, Fay; Di Iorio, Tatiana; Ehret, Gerhard; Engelmann, R.; Kiemle, Christoph; Herold, Christian; Mobbs, Stephen; Mueller, D.; Pal, Sandip; Radlach, Marcus; Riede, Andrea; Seifert, Patric; Shiler, Max; Wirth, Martin; Wulfmeyer, Volker (American Institute of Physics, 2009)The main objective of this work is to provide accurate error estimates for the different water vapour profiling sensors based on an intensive inter-comparison effort. The inter-comparison, performed in the framework of ... -
The water vapour intercomparison effort in the framework of the Convective and Orographically-induced Precipitation Study : airborne-to-ground-based and airborne-to-airborne lidar systems
Bhawar, R.; Di Girolamo, P.; Summa, D.; Flamant, C.; Althausen, D.; Behrendt, A.; Kiemle, C.; Bosser, P.; Cacciani, M.; Champollion, C.; Di Iorio, T.; Engelmann, R.; Herold, C.; Mueller, D.; Pal, S.; Wirth, M.; Wulfmeyer, V. (2011-01)An intensive water vapour intercomparison effort, involving airborne and ground-based water vapour lidar systems, was carried out in the framework of the COPS experiment. The main objective of this paper is to provide ...