Browsing University of Hertfordshire by Author "Tesche, Matthias"

Now showing items 21-40 of 83

    • 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 ...

    • Dust and smoke transport from Africa to South America : Lidar profiling over Cape Verde and the Amazon rainforest 

      Ansmann, Albert; Baars, Holger; Tesche, Matthias; Mueller, D.; Althausen, Dietrich; Engelmann, Ronny; Pauliquevis, Theotonio; Artaxo, Paulo (2009-06-02)
      Quasi-simultaneous vertically resolved multiwavelength aerosol Raman lidar observations were conducted in the near field (Praia, Cape Verde, 15 degrees N, 23.5 degrees W) and in the far field (Manaus, Amazon basin, Brazil, ...

    • Dust mobilization and aerosol transport from West Africa to Cape Verde-a meteorological overview of SAMUM-2 

      Knippertz, Peter; Tesche, Matthias; Heinold, Bernd; Kandler, Konrad; Toledano, Carlos; Esselborn, Michael (2011-09-01)
      The second field campaign of the SAharan Mineral dUst experiMent (SAMUM-2) was performed between 15 January and 14 February 2008 at the airport of Praia, Cape Verde, and provided valuable information to study the westward ...

    • Dust mobilization and transport in the northern Sahara during SAMUM 2006 - a meteorological overview 

      Knippertz, Peter; Ansmann, Albert; Althausen, Dietrich; Mueller, D.; Tesche, Matthias; Bierwirth, Eike; Dinter, Tilman; Mueller, Thomas; Von Hoyningen-Huene, Wolfgang; Schepanski, Kerstin; Wendisch, Manfred; Heinold, Bernd; Kandler, Konrad; Petzold, Andreas; Schuetz, Lothar; Tegen, Ina (2009-02)
      The SAMUM field campaign in southern Morocco in May/June 2006 provides valuable data to study the emission, and the horizontal and vertical transports of mineral dust in the Northern Sahara. Radiosonde and lidar observations ...

    • EARLINET correlative measurements for CALIPSO 

      Mattis, Ina; Mona, Lucia; Mueller, D.; Pappalardo, Gelsomina; Alados Arboledas, Lucas; D'Amico, Giuseppe; Amodeo, Aldo; Apituley, Arnoud; Maria Baldasano, Jose; Boeckmann, Christine; Boesenbergg, Jens; Chaikovsky, Anatoli; Comeron, Adolfo; Giannakaki, Elina; Grigorov, Ivan; Guerrero Rascado, Juan Luis; Gustafsson, Ove; Iarlori, Marco; Linne, Holger; Mitev, Valentin; Molero Menendez, Francisco; Nicola, Doina; Papayannis, Alexandros; Perez Garcia-Pando, Carlos; Perrone, Maria Rita; Pietruczuk, Aleksander; Putaud, Jean-Philippe; Ravetta, Francois; Rodriguez, Alejandro; Seifert, Patric; Sicard, Michael; Simeonov, Valentin; Sobolewski, Piotr; Spinelli, Nicola; Stebel, Kerstin; Stohl, Andreas; Tesche, Matthias; Trickl, Thomas; Wang, Xuan; Wiegner, Matthias (SPIE, 2007)
      The European Aerosol Research Lidar Network (EARLINET) was established in 2000 to derive a comprehensive, quantitative, and statistically significant data base for the aerosol distribution on the European scale. At present, ...

    • 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 ...

    • 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 ...

    • Four-dimensional variational data analysis of water vapor Raman lidar data and their impact on mesoscale forecasts 

      Grzeschik, Matthias; Bauer, Hans Stefan; Wulfmeyer, Volker; Engelbart, Dirk; Wandinger, Ulla; Mattis, Ina; Althausen, Dietrich; Engelmann, Ronny; Tesche, Matthias; Riede, Andrea (2008-08)
      The impact of water vapor observations on mesoscale initial fields provided by a triangle of Raman lidar systems covering an area of about 200 km × 200 km is investigated. A test case during the Lindenberg Campaign for ...

    • 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 ...

    • 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, ...

    • 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 ...

    • Identification of Atmospheric Mineral Dust Composition from Raman-Scattering Spectra 

      Mueller, Detlef; Tatarov, Boyan; Tesche, Matthias; Shin, Sung-Kyun (2018-08-26)

    • 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 ...

    • Influence of Saharan dust on cloud glaciation in southern Morocco during the Saharan Mineral Dust Experiment 

      Ansmann, A.; Tesche, Matthias; Althausen, D.; Mueller, D.; Seifert, P.; Freudenthaler, V.; Heese, B.; Wiegner, M.; Pisani, G.; Knippertz, P.; Dubovik, O. (2008-02-27)
      Multiwavelength lidar, Sun photometer, and radiosonde observations were conducted at Ouarzazate ( 30.9 degrees N, 6.9 degrees W, 1133 m above sea level, asl), Morocco, in the framework of the Saharan Mineral Dust Experiment ...

    • Lidar observations of the Eyjafjallajökull volcanic ash plume at Leipzig, Germany 

      Tesche, Matthias; Ansmann, Albert; Hiebsch, Anja; Mattis, Ina; Schmidt, Jörg; Seifert, Patric; Wandinger, Ulla (SPIE, 2010-11-08)
      From 16-24 April 2010 multiwavelength EARLINET Raman lidar and AERONET Sun photometer measurements were performed at the Leibniz Institute for Tropospheric Research (IfT) in Leipzig (51.3° N, 12.5° E), Germany, to monitor ...

    • LIDAR SPRECTROSCOPY INSTRUMENT(LISSI):AN INFRASTRUCTURE FACILITY FOR CHEMICAL AEROSOL PROFILING AT THE UNIVERSITY OF HERTFORDSHIRE 

      Tesche, Matthias; Tatarov, Boyan; Noh, Youngmin; Mueller, Detlef (2018-04-13)
      The lidar development at the University of Hertfordshire explores the feasibility of using Raman backscattering for chemical aerosol profiling. This paper provides an overview of the new facility. A high-power Nd:YAG/OPO ...

    • Long-term variation study of fine-mode particle size and regional characteristics using AERONET data 

      Shin, Juseon; Sim, Juhyeon; Dehkhoda, Naghmeh; Joo, Sohee; Kim, Taekyung; Kim, Gahyung; Müller, Detlef; Tesche, Matthias; Shin, Sungkyun; Shin, Dongho; Noh, Youngmin (2022-09-06)
      To identify the long-term trend of particle size variation, we analyzed aerosol optical depth (AOD, τ) separated as dust (τD) and coarse-(τPC) and fine-pollution particles (τPF) depending on emission sources and size. ...

    • Low hygroscopic scattering enhancement of boreal aerosol and the implications for a columnar optical closure study 

      Zieger, Paul; Aalto, P. P.; Aaltonen, V.; Äijälä, M.; Backman, J.; Hong, J.; Komppula, M.; Krejci, R.; Laborde, M.; Lampilahti, J.; de Leeuw, G.; Pfüller, A.; Rosati, B.; Tesche, Matthias; Tunved, P.; Väänänen, R.; Petäjä, T. (2015-07-02)
      Ambient aerosol particles can take up water and thus change their optical properties depending on the hygroscopicity and the relative humidity (RH) of the surrounding air. Knowledge of the hygroscopicity effect is of crucial ...