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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 ... -
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 ... -
EARLINET: the European Aerosol Research Lidar Network for the Aerosol Climatology on Continental Scale
Pappalardo, Gelsomina; Boesenberg, Jens; Amodeo, Aldo; Ansmann, Albert; Apituley, Arnoud; Alados Arboledas, Lucas; Balis, Dimitris; Boeckmann, Christine; Chaikovsky, Anatoly; Comeron, Adolfo; D'Amico, Giuseppe; Freudenthaler, Volker; Grigorov, Ivan; Hansen, Georg; Linne, Holger; Kinne, Stefan; Mattis, Ina; Mona, Lucia; Mueller, D.; Mitev, Valentin; Nicolae, Doina; Papayannis, Alexandros; Perrone, Maria Rita; Pietruczuk, Aleksander; Pujadas, Manuel; Putaud, Jean-Philippe; Ravetta, Francois; Rizi, Vincenzo; Simeonov, Valentin; Spinelli, Nicola; Trickl, Thomas; Wandinger, U.; Wiegner, Matthias (American Institute of Physics (AIP), 2009)Lidar techniques represent the most suitable tool to obtain information on the aerosol vertical distribution and therefore to close this kind of observational gap. Lidar networks are fundamental to study aerosol on large ... -
Effect of internal mixture on black carbon radiative forcing
Chung, Chul E.; Lee, Kyunghwa; Mueller, D. (2012-01)The effects of coating on black carbon (BC) optical properties and global climate forcing are revisited with more realistic approaches. We use the Generalized Multiparticle Mie method along with a realistic size range of ... -
The effective density of small ice particles obtained from in situ aircraft observations of mid-latitude cirrus
Cotton, Richard; Field, P.R.; Ulanowski, Joseph; Kaye, Paul H.; Hirst, Edwin; Greenaway, Richard; Crawford, I.A.; Crosier, J.; Dorsey, James (2013-10)The effective ice-particle density, parametrized through a mass–dimension relation, is widely used in ice microphysical schemes for weather and climate models. In this study, we use aircraft-based observations in mid-latitude ... -
Effects of Surface Roughness with Two Scales on Light Scattering by Hexagonal Ice Crystals Large Compared to the Wavelength: DDA Results
Collier, Christopher T.; Hesse, Evelyn; Taylor, Laurence; Ulanowski, Zbigniew; Penttila, Antti; Nousiainen, Timo (2016-10-01)The effect of ice crystal surface roughness on light scattering by ice crystals which are large compared to the wavelength was studied, in particular changes to the 2D scattering patterns, azimuthally averaged phase ... -
Electron-beam guiding and phase-mix damping by a laser-ionized channel
Martin, William Eugene; Caporaso, G.J.; Fawley, W.M.; Prosnitz, D.; Cole, A.G. (1985-02)An ultraviolet-laser-ionized channel in low-pressure benzene has been successfully used to guide and focus a 7-kA relativistic electron beam over distances up to 4 m. In addition, phase-mix damping of coherent, transverse ... -
Electronic Number Plate Generation for Performance Evaluation
Ramalingam, Soodamani; Martin, Bill; Rhead,, Michael; Gurney, Robert (Institute of Electrical and Electronics Engineers (IEEE), 2022-09-26)The authors have been involved in real world analysis of Automatic Number Plate Recognition (ANPR) data and systems particularly for law enforcement applications. As a result of such work with Law Enforcement Agencies, ... -
Energetics of Deep Alpine Valleys in Pooling and Draining Configurations
Arduini, G.; Chemel, Charles; Staquet, C. (2017-07-01)The Weather Research and Forecast numerical model is used to investigate the nocturnal atmospheric boundary layer in a valley that opens either on a wider valley (draining configuration) or on a narrower valley (pooling ... -
Equivalence between free quantum particles and those in harmonic potentials and its application to instantaneous changes
Steuernagel, Ole (2014-06)In quantum physics the free particle and the harmonically trapped particle are arguably the most important systems a physicist needs to know about. It is little known that, mathematically, they are one and the same. This ... -
Eruption of the Eyjafjallajokull Volcano in spring 2010 : Multiwavelength Raman lidar measurements of sulphate particles in the lower troposphere
Navas-Guzman, F.; Mueller, D.; Bravo-Aranda, J. A.; Guerrero-Rascado, J. L.; Granados-Munoz, M. J.; Perez-Ramirez, D.; Olmo, F. J.; Alados-Arboledas, L. (2013-02-27)A fraction of the volcanic plume that originated from the Eyjafjallajokull volcanic eruption on Iceland in 2010 reached the southern Iberian Peninsula in May 2010. The plume was monitored and characterized in terms of ... -
Estimation of microphysical parameters of atmospheric pollution using machine learning
Llerena, C.; Müller, D.; Adams, R.; Davey, N.; Sun, Y. (Springer Nature, 2018-09-27)The estimation of microphysical parameters of pollution (effective radius and complex refractive index) from optical aerosol parameters entails a complex problem. In previous work based on machine learning techniques, ... -
Estimation of radiative forcing by the dust and non-dust content in mixed East Asian pollution plumes on the basis of depolarization ratios measured with lidar
Noh, Young M.; Mueller, D.; Lee, Hanlim; Lee, KwonHo; Kim, Kwanchul; Shin, Sungkyun; Kim, Young J. (2012-12)The contribution of dust and non-dust aerosols to the lidar observed total backscattering was estimated from the linear particle depolarization ratios (delta(p)) under the assumption of externally mixed aerosols. During ... -
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 ... -
Evaluating the capability of regional-scale air quality models to capture the vertical distribution of pollutants
Solazzo, E.; Bianconi, R.; Pirovano, G.; Moran, M. D.; Vautard, R.; Hogrefe, C.; Appel, K. W.; Matthias, V.; Grossi, P.; Bessagnet, B.; Brandt, J.; Chemel, C.; Christensen, J. H.; Forkel, R.; Vazhappilly Francis, Xavier; Hansen, A. B.; McKeen, S.; Nopmongcol, U.; Prank, M.; Sartelet, K. N.; Segers, A.; Silver, J. D.; Yarwood, G.; Werhahn, J.; Zhang, J.; Rao, S. T.; Galmarini, S. (2013)This study is conducted in the framework of the Air Quality Modelling Evaluation International Initiative (AQMEII) and aims at the operational evaluation of an ensemble of 12 regional-scale chemical transport models used ... -
Evaluation and application of a statistical model for assessment of long-range transported proportion of PM 2.5 in the United Kingdom and in Finland
Kukkonen, J.; Sokhi, R.S.; Luhana, L.; Harkonen, J.; Salmi, T.; Sofiev, M.; Karppinen, A. (2008) -
Evaluation of a CMAQ simulation at high resolution over the UK for the calendar year 2003
Chemel, C.; Sokhi, R.S.; Yu, Y.; Hayman, G.D.; Vincent, K.J.; Dore, A.J.; Tang, Y.S.; Prain, H.D.; Fisher, B. (2010)A comprehensive ‘operational’ evaluation of the performance of the Community Multiscale Air Quality (CMAQ) modelling system version 4.6 was conducted in support of pollution assessment in the UK for the calendar year 2003. ... -
Evaluation of an urban modelling system against three measurement campaigns in London and Birmingham
Sokhi, Ranjeet (2017-01-01)The results of three measurement campaigns are presented in this study. The campaigns have been undertaken at an urban roadside site in London, for more than a year and three months in 2003e2004 and for a year in 2008, and ...