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Further Evidence of Important Environmental Information Content in...

By: A. Kazantzidis; V. Amiridis; P. Tetsis; K. Eleftheratos; C. S. Zerefos; S. Kazadzis; S. C. Zerefos; A. Papayannis; E. Gerasopoulos; J. Luterbacher

Description: Academy of Athens, Athens, Greece. We examine sunsets painted by famous artists as proxy information for the aerosol optical depth after major volcanic eruptions. Images derived from precision colour protocols applied to the paintings were compared to online images, and found that the latter, previously analysed, provide accurate information. Aerosol optical depths (AODs) at 550 nm, corresponding to Northern Hemisphere middle latitudes, calculated by in...

Ammann, C. and Naveau, P.: Statistical analysis of tropical explosive volcanism occurences over the last 6 centuries, Geophy. Res. Lett., 30, 1210, doi:10.1029/2002GL016388, 2003.; Crowley, T. J. and Unterman, M. B.: Technical details concerning development of a 1200 yr proxy index for global volcanism, Earth Syst. Sci. Data, 5, 187–197, doi:10.5194/essd-5-187-2013, 2...

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Validation of Xco2 Derived from Swir Spectra of Gosat Tanso-fts wi...

By: I. Morino; T. Yokota; O. Uchino; Y. Miyamoto; A. E. Andrews; P. K. Patra; M. Inoue; P. P. Tans; Y. Yoshida; H. Matsueda; T. MacHida; C. Sweeney; Y. Sawa

Description: National Institute for Environmental Studies (NIES), Tsukuba, Japan. Column-averaged volume mixing ratios of carbon dioxide (XCO2) retrieved from Greenhouse gases Observing SATellite (GOSAT) Short-Wavelength InfraRed (SWIR) observations were compared with aircraft measurements by the Comprehensive Observation Network for TRace gases by AIrLiner (CONTRAIL) project, the National Oceanic and Atmospheric Administration (NOAA), and the Nation...

Matsueda, H., Machida, T., Sawa, Y., Nakagawa, Y., Hirotani, K., Ikeda, H., Kondo, N., and Goto, K.: Evaluation of atmospheric CO2 measurements from new flask air sampling of JAL airliner observations, Pap. Meteorol. Geophys., 59, 1–17, 2008.; Miyamoto, Y., Inoue, M., Morino, I., Uchino, O., Yokota, T., Machida, T., Sawa, Y., Matsueda, H., Sweeney, C., Tans, P. P., Andrews, A. E., and Patra, P. K.: Atmospheric column-averaged mole fractions of carbon dioxide a...

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The Total Solar Eclipse of March 2006: Overview : Volume 8, Issue ...

By: G. Economou; V. Amiridis; A. Belehaki; P. Zanis; E. Gerasopoulos; M. Kanakidou; D. Founda; C. S. Zerefos; N. Christou; I. Tsagouri; A. F. Bais; A. Karamanos; M. Petrakis

Description: National Observatory of Athens, V. Pavlou and I. Metaxa, P. Penteli, 15236, Athens, Greece. This paper provides the overview of an integrated, multi-disciplinary effort to study the effects of the 29 March 2006 total solar eclipse on the environment, with special focus on the atmosphere. The eclipse has been visible over the Eastern Mediterranean, and on this occasion several research and academic institutes organised co-ordinated experimental campaigns...

Abram, J. P., Creasey, D. J., Heard, D. E., Lee, J. D., and Pilling, M. J.: Hydroxyl radical and ozone measurements in England during the solar eclipse of 11 August 1999, Geophys. Res. Lett., 27(D21), 3437–3440, 2000.; Altadill, D., Sole, J. G., and Apostolov, E. M.: Vertical structure of a gravity wave like oscillation in the ionosphere generated by the solar eclipse of 11~August~1999, J. Geophys. Res., 106(A10), 21 419–21 428, 2001.; Amiridis, V., Melas D., Balis, D. S...

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Influence of Non-ideality on Condensation to Aerosol : Volume 9, I...

By: J.-f. Müller; S. Compernolle; K. Ceulemans

Description: Belgian Institute for Space-aeronomy, Ringlaan 3, 1180 Brussels, Belgium. Secondary organic aerosol (SOA) is a complex mixture of water and organic molecules. Its composition is determined by the presence of semi-volatile or non-volatile compounds, their saturation vapor pressure and activity coefficient. The activity coefficient is a non-ideality effect and is a complex function of SOA composition. In a previous publication, the detailed chemical mech...

Barton, A. F M.: Handbook of Solubility Parameters and Other Cohesion Parameters, CRC Press, 1991.; Benson, S.: Bond energies, J. Chem. Educ., 42, 502–18, 1965.; Bondi, A.: Physical properties of molecular crystals, liquids, and glasses, Wiley, New York, 1968.; Bonn, B., von Kuhlmann, R., and Lawrence, M G.: High contribution of biogenic hydroperoxides to secondary organic aerosol formation, Geophys. Res. Lett., 31, L10108, \doi10.1029/2003GL019172, 2004.; Bowman, F M. a...

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Assessment of Atmospheric Processes Driving Ozone Variations in th...

By: J. C. Guerra; J. Bustos; S. Alonso-pérez; Y. González; E. Cuevas; S. Rodríguez; A. J. Gómez-peláez; C. Milford

Description: Izaña Atmospheric Research Centre (IARC), Agencia Estatal de Meteorología (AEMET), Izaña, Spain. An analysis of the 22-yr ozone (O3) series (1988–2009) at the subtropical high mountain Izaña station (IZO; 2373 m a.s.l.), representative of free troposphere (FT) conditions, is presented. Diurnal and seasonal O3 variations as well as the O3 trend (0.19 ± 0.05% yr−1 or 0.09 ppbv yr), are assessed. A ...

Alonso-Pérez, S., Cuevas, E., Querol, X., Viana, M., and Guerra, J.: Impact of the Saharan dust outbreaks on the ambient levels of total suspended particles (TSP) in the marine boundary layer (MBL) of the Subtropical Eastern North Atlantic Ocean, Atmos. Environ., 41, 9468–9480, 2007.; Alonso-Pérez, S., Cuevas, E., Pérez, C., Querol, X., Baldasano, J., Draxler, R., and de Bustos, J.: Trend changes of African airmass intrusions in the marine boundary layer over the subtrop...

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A Multimethodological Approach to Study the Spatial Distribution o...

By: A. Wisthaler; J. Vergeiner; M. Norman; A. Gohm; R. Schnitzhofer; F. Obleitner; A. Hansel; B. Neininger; A. Fix; F. Harnisch

Description: Institute of Ion Physics and Applied Physics, University of Innsbruck, Innsbruck, Austria. In order to investigate the spatial distribution of air pollutants in the Inn valley (Tyrol, Austria) during wintertime, a joint field campaign of the three research projects ALPNAP (Monitoring and Minimisation of Traffic-Induced Noise and Air Pollution Along Major Alpine Transport Routes), INNAP (Boundary Layer Structure in the Inn Valley during high Air Pollution...

Carnuth, W. and Trickl, T.: Transport studies with the IFU three-wavelength aerosol lidar during the VOTALP Mesoclina experiment, Atmos. Environ., 34, 1425–1434, 2000.; Chazette, P., Couvert, P., Randriamiarisoa, H., Sanak, J., Bonsang, B., Moral, P., Berthier, S., Salanave, S., and Toussaint, F.: Three-dimensional survey of pollution during winter in French Alps valleys, Atmos. Environ., 39, 1035–1047, 2004.; Dreiseitl, E. and Stöhr, D.: Zusammenhänge zwischen Emission ...

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Peroxy Radical Observations Over West Africa During the Amma 2006 ...

By: J. P. Burrows; M. Lichtenstern; D. Kartal; L. Reichert; M. D. Andrés-hernández; P. Stock; J. Meyer Arnek; H. Schlager

Description: Institute of Environmental Physics, University of Bremen, Germany. Peroxy radical measurements made on board the DLR-Falcon research aircraft over West Africa within the African Monsoon Multidisciplinary Analysis (AMMA) campaign during the 2006 wet monsoon are presented in this study. The analysis of data focuses on the photochemical activity of air masses sampled during episodes of intense convection and biomass burning. Generally, the total sum of per...

Agustí-Panareda, A. and Beljaars, A.: ECMWF's contribution to AMMA, ECMWF Newsletter, No. 115, Springer, 2008.; Ancellet, G., Leclair de Bellevue, J., Mari, C., Nedelec, P., Kukui, A., Borbon, A., and Perros, P.: Role of convective transport on tropospheric ozone chemistry revealed by aircraft observations during the wet season of the AMMA campaign, Atmos. Chem. Phys. Discuss., 8, 15941–15996, 2008.; Burkert, J., Andrés-Hernández, M. D, Reichert, L., Meyer-Arnek, J., Dod...

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Particle Formation at a Continental Background Site: Comparison of...

By: H. Berresheim; M. Wilck; F. Stratmann; W. Birmili; U. Uhrner; I. J. Ackermann

Description: Institute for Tropospheric Research, Permoserstr. 15, 04318 Leipzig, Germany. At Hohenpeissenberg (47°48'N, 11°07'E, 988 m asl), a rural site 200-300 m higher than the surrounding terrain, sulphuric acid concentrations, particle size distributions, and other trace gas concentrations were measured over a two and a half year period. Measured particle number concentrations and inferred particle surface area-concentrations were compared with box-...

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Diurnal Evolution of Cloud Base Heights in Convective Cloud Fields...

By: L. Bugliaro; R. Meerkötter

Description: Deutsches Zentrum für Luft- und Raumfahrt, Institut für Physik der Atmosphäre, Oberpfaffenhofen, Germany. This study shows that it is possible to retrieve the temporal evolution of cloud base heights in convective broken cloud fields from data of the SEVIRI instrument onboard the geostationary satellite Meteosat-9. Presented and discussed are time dependent base heights with a temporal resolution of 15 min from morning to afternoon. Cloud base heights re...

Anderson, G. P., Clough, S. A., Kneizys, F. X., Chetwynd, J. H., and Shettle, E. P.: AFGL Atmospheric Constituent Profiles (0–120 km), AFGL-TR-86-0110, AFGL (OPI), Hanscom AFB, MA 01736, 1986.; Bennartz, R.: Global assessment of marine boundary layer cloud droplet number concentration from satellite, J. Geophys. Res., 112, D02201, doi:10.1029/2006JD007547, 2007.; Brenguier, J.-L., Pawlowska, H., Schüller, L., Preusker, R., Fischer, J., and Fouquart, Y.: Radiative propert...

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Assessing the Near Surface Sensitivity of Sciamachy Atmospheric Co...

By: A. Desai; N. Fedoseev; N. Vinnichenko; M. P. Barkley; A. J. Hewitt; T. MacHida; P. S. Monks; T. Watai; T. Nakazawa; M. Yu Arshinov

Description: EOS, Department of Physics and Astronomy, University of Leicester, UK. Satellite observations of atmospheric CO2 offer the potential to identify regional carbon surface sources and sinks and to investigate carbon cycle processes. The extent to which satellite measurements are useful however, depends on the near surface sensitivity of the chosen sensor. In this paper, the capability of the SCIAMACHY instrument on board ENVISAT, to observe low...

Bakwin, P S. and Tans, P P.: Measurements of carbon dioxide on a very tall tower, Tellus, 47B, 535–549, 1995.; Barkley, M P., Frieß, U., and Monks, P S.: Measuring atmospheric \chemCO_2 from space using Full Spectral Initiation (FSI) WFM-DOAS, Atmos. Chem. Phys., 6, 3517–3534, 2006a.; Barkley, M P., Monks, P S., and Engelen, R J.: Comparison of SCIAMACHY and AIRS CO2 measurements over North America during the summer and autumn of 2003, Geophys. Res. Lett., 33,...

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Cloud Droplet Activity Changes of Soot Aerosol Upon Smog Chamber A...

By: J. Rissler; A. C. Eriksson; E. Z. Nordin; J. E. Carlsson; C. Wittbom; P. T. Nilsson; J. H. Pagels; P. Roldin; B. Svenningsson; E. Swietlicki

Description: Department of Physics, Lund University, P.O. Box 118, 221 00 Lund, Sweden. Particles containing soot, or black carbon, are generally considered to contribute to global warming. However, large uncertainties remain in the net climate forcing resulting from anthropogenic emissions of black carbon (BC), to a large extent due to the fact that BC is co-emitted with gases and primary particles, both organic and inorganic, and subject to atmospheric ageing proc...

Ackerman, A. S., Toon, O., Stevens, D., Heymsfield, A., Ramanathan, V., and Welton, E.: Reduction of tropical cloudiness by soot, Science, 288, 1042–1047, 2000.; Albrecht, B. A.: Aerosols, cloud microphysics, and fractional cloudiness, Science, 245, 1227–1230, 1989.; Andreae, M. O. and Rosenfeld, D.: Aerosol-cloud-precipitation interactions. Part 1. The nature and sources of cloud-active aerosols, Earth-Sci. Rev., 89, 13–41, 2008.; Arens, F., Gutzwiller, L., Baltensperge...

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Hemispheric Transport and Influence of Meteorology on Global Aeros...

By: P. Huang; D. Lavoué; S. L. Gong; T. L. Zhao

Description: Key Lab of Atmospheric Physics and Environment, CMA, Nanjing University of Information Science & Technology, Nanjing, Jiangsu, 210044, China. Based on a 10-yr simulation with the global air quality modeling system GEM-AQ/EC, the inter-annual and seasonal variability as well as the mean climate of hemispheric aerosol transport (HAT) was investigated. The intercontinental aerosol transport is predominant in the zonal direction from west to east...

Anenberg, S. C., West, J. J., Fiore, A. M., Jaffe, D. A., Prather, M. J., Bergmann, D., Cuvelier, K., Dentener, F. J., Duncan, B. N., Gauss, M., Hess, P., Jonson, J. E., Lupu, A., MacKenzie, I. A., Marmer, E., Park, R. J., Sanderson, M. G., Schultz, M., Shindell, D. T., Szopa, S., Vivanco, M. G., Wild, O., and Zeng, G.: Intercontinental impacts of ozone pollution on human mortality, Environ. Sci. Technol., 43(17), 6482–6487, do...

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Multi Axis Differential Optical Absorption Spectroscopy (Max-doas)...

By: U. Platt; C. Von Friedeburg; G. Hönninger

Description: Institut für Umweltphysik, Universität Heidelberg, Heidelberg, Germany. Multi Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) is a novel measurement technique that represents a significant advance on the well-established zenith scattered sunlight DOAS instruments which are mainly sensitive to stratospheric absorbers. MAX-DOAS utilizes scattered sunlight received from multiple viewing directions. The spatial distribution of variou...

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East Asian So2 Pollution Plume Over Europe – Part 1: Airborne Trac...

By: S. Ludmann; F. Arnold; A. Stohl; V. Fiedler; H. Schlager; R. Nau

Description: Deutsches Zentrum für Luft- und Raumfahrt, Institut für Physik der Atmosphäre, Oberpfaffenhofen, 82234 Wessling, Germany. A large SO2-rich pollution plume of East Asian origin was detected by aircraft based CIMS (Chemical Ionization Mass Spectrometry) measurements at 3–7.5 km altitude over the North Atlantic. The measurements, which took place on 3 May 2006 aboard of the German research aircraft Falcon, were part of the INTEX-B (Intercont...

Garrett, T., Radke, L., and Hobbs, P.: Aerosol Effects on Cloud Emissivity and Surface Longwave Heating in the Arctic, J. Atmos. Sci., 59, 769–778, 2002.; Emanuel, K A. and Živkovic Rothman, M.: Development and evaluation of a convection scheme for use in climate models, J. Atmos. Sci., 56, 1766–1782, 1999.; Andreae, M., Jones, C., and Cox, P.: Strong present-day aerosol cooling implies a hot future, Nature, 435, 1187–1190, 2005.; Arnold, F., Schneider, J., Gollinger, K....

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Vertical Profiles of Optical and Microphysical Particle Properties...

By: A. M. L. Ekman; J. A. Ogren; V. Ramanathan; F. Höpner; A. Andersson; C. Bosch; F. A.-m. Bender; Ö. Gustafsson; P. S. Praveen

Description: Department of Meteorology (MISU) and the Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden. A detailed analysis of optical and microphysical properties of aerosol particles during the dry winter monsoon season above the northern Indian Ocean is presented. The Cloud Aerosol Radiative Forcing Experiment (CARDEX), conducted in February and March 2012 at the Maldives Climate Observatory on Hanimaadhoo island (MCOH) in the...

Anderson, T. L. and Ogren, J. A.: Determining aerosol radiative properties using the TSI 3568 Integrating Nephelometer, Aerosol Sci. Tech., 29, 57–69, 1998.; Andreae, M. O. and Ramanathan, V.: Climates dark forcings, Science, 340, 280–281, 2013.; Arnott, W. P., Hamasha, K., Moosmüller, H., Sheridan, P. J., and Ogren, J. A.: Towards aerosol light-absorption measurements wwith 7-wavelength Aethalometer: evaluation with a photoacoustic instrument and 3-wavelength Nephelomet...

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Seeking for the Rational Basis of the Median Model: the Optimal Co...

By: G. Giunta; S. Galmarini; A. Riccio

Description: Dept. of Applied Science, University of Naples Parthenope, Napoli, Italy. In this paper we present an approach for the statistical analysis of multi-model ensemble results. The models considered here are operational long-range transport and dispersion models, also used for the real-time simulation of pollutant dispersion or the accidental release of radioactive nuclides.

We first introduce the theoretical basis (with its roots sinking into the...

Galmarini S., Bianconi, R., Bellasio, R., and Graziani, G.: Forecasting consequences of accidental releases from ensemble dispersion modelling, J. Environ. Radioactivity, 57, 203–219, 2001.; Galmarini, S., Bianconi, R., Klug, W., Mikkelsen, T., Addis, R., Andronopoulos, S., Astrup, P., Baklanov, A., Bartniki, J., Bartzis, J. C., Bellasio, R., Bompay, F., Buckley, R., Bouzom, M., Champion, H., D'Amours, R., Davakis, E., Eleveld, H., Geertsema, G. T., Glaab, H., Kollax, M....

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One Year of Cnr-imaa Multi-wavelength Raman Lidar Measurements in ...

By: G. Pappalardo; A. Amodeo; G. D'Amico; V. Cuomo; F. Madonna; A. Giunta; L. Mona; F. Russo; A. Boselli

Description: Consiglio Nazionale delle Ricerche, Istituto di Metodologie per l'Analisi Ambientale (CNR-IMAA), C. da S. Loja, 85050 Tito Scalo, Potenza, Italy. At CNR-IMAA, an aerosol lidar system is operative since May 2000 in the framework of EARLINET (European Aerosol Research Lidar Network), the first lidar network for tropospheric aerosol study on continental scale. High quality multi-wavelength measurements make this system a reference point for the validation o...

Amodeo, A., Mattis, I., Böckmann, C., et al.: A European research infrastructure for the aerosol study on a continental scale: EARLINET-ASOS, Remote Sensing of Clouds and the Atmosphere XII, edited by: Comerón, A., Picard, R. H., Schäfer, K., Slusser, J. R., Amodeo, A., Proc. SPIE, 6745, 67450Y, (2007)·0277-786X/07/{$}, 18, doi:10.1117/12.738401, 2007.; Anderson, T. L., Masonis, S. J., Covert, D. S., Ahlquist, N. C., Howell, S. G., Clarke, A. D., and McNaughton, C. S.: V...

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The Equilibrium Response to Idealized Thermal Forcings in a Compre...

By: C. S. Zender; S. C. Sherwood; J. R. Norris; R. J. Allen

Description: Department of Earth Sciences, University of California, Riverside, Riverside, CA, USA. Several recent studies have shown the width of the tropical belt has increased over the last several decades. The mechanisms driving tropical expansion are not well known and the recent expansion is underpredicted by state-of-the art GCMs. We use the CAM3 GCM to investigate how tropical width responds to idealized atmospheric heat sources, focusing on zonal displaceme...

Allen, R. J. and Sherwood, S. C.: The impact of natural versus anthropogenic aerosols on atmospheric circulation in the C}ommunity {A}tmosphere {M}odel, {Climate Dyn., 36, 1959–1978, 2011.; Baldwin, M. P. and Dunkerton, T. J.: Propagation of the A}rctic {O}scillation from the stratosphere to the troposphere. {J. Geophys. Res., 104, 30937–30946, 1999.; Bond, T. C., Bhardwaj, E., Dong, R., Jogani, R., Jung, S., Roden, C., Streets, D. G., and Trautmann, N. M.: Historical em...

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Drizzle Formation in Stratocumulus Clouds: Effects of Turbulent Mi...

By: M. Pinsky; A. Khain; L. Magaritz-ronen

Description: Department of Atmospheric Sciences, The Hebrew University of Jerusalem, Israel. The mechanism of drizzle formation in shallow stratocumulus clouds and the effect of turbulent mixing on this process are investigated. A Lagrangian-Eularian model of the cloud-topped boundary layer is used to simulate the cloud measured during flight RF07 of the DYCOMS-II field experiment. The model contains ~ 2000 air parcels that are advected in a turbulence-like velocity...

Ackerman, A. S., VanZanten, M. C., Stevens, B., Savic-Jovcic, V., Bretherton, C. S., Chlond, A., Golaz, J.-C., Jiang, H., Khairoutdinov, M., Krueger, S. K., Lewellen, D. C., Lock, A., Moeng, C.-H., Nakamura, K., Petters, M. D., Snider, J. R., Weinbrecht, S., and Zulauf, M.: Large-Eddy Simulations of a Drizzling, Stratocumulus-Topped Marine Boundary Layer, Mon. Weather Rev., 137, 1083–1110, doi:10.1175/2008MWR2582.1, 200...

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Light-absorbing Impurities in Arctic Snow : Volume 10, Issue 8 (10...

By: T. C. Grenfell; S. G. Warren; A. D. Clarke; R. E. Brandt; S. J. Doherty

Description: Joint Institute for the Study of Atmosphere and Ocean, 3737 Brooklyn Ave NE, Seattle, WA 98195, USA. Absorption of radiation by ice is extremely weak at visible and near-ultraviolet wavelengths, so small amounts of light-absorbing impurities in snow can dominate the absorption of solar radiation at these wavelengths, reducing the albedo relative to that of pure snow, contributing to the surface energy budget and leading to earlier snowmelt. In ...

Aleksandrov, Y. I., Bryazgin, N. N., Førland, E. J., Radionov, V. F., and Svyashchennikov, P. N.: Seasonal, interannual and long-term variability of precipitation and snow depth in the region of the Barents and Kara Seas, Polar Res., 24, 69–85, 2005.; Andreae, M. O. and Gelencsér, A.: Black carbon or brown carbon? The nature of light-absorbing carbonaceous aerosols, Atmos. Chem. Phys., 6, 3131–3148, doi:10.5194/acp-6-3131-2006, 2006.; Bond, T.: Spectral dependence of vis...

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