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An Analysis of Fast Photochemistry Over High Northern Latitudes Du...

By: J. Mao; G. Diskin; L. G. Huey; G. Chen; W. Brune; J. Crounse; X. Ren; B. Anderson; D. Knapp; P. Weibring; E. Apel; A. Wisthaler; J. Walega; J. H. Crawford; S. R. Hall; P. Wennberg; D. Riemer; J. St. Clair; M. Beaver; K. Ullmann; D. Blake; J. Dibb; J. R. Olson; A. Fried; A. Weinheimer; D. Richter

Description: NASA Langley Research Center, Hampton, VA, USA. Observations of chemical constituents and meteorological quantities obtained during the two Arctic phases of the airborne campaign ARCTAS (Arctic Research of the Composition of the Troposphere from Aircraft and Satellites) are analyzed using an observationally constrained steady state box model. Measurements of OH and HO2 from the Penn State ATHOS instrument are compared to model predicti...

Apel, E.C, Hills A. J., Lueb, R., Zindel, S., Eisele, S., and Riemer, D. D.: A fast-GC/MS system to measure C2 to C4 carbonyls and methanol aboard aircraft, J. Geophys. Res., 108, 8794, doi:10.1029/2002JD003199, 2003.; Clark, A. D.: A thermo-optic technique for in-situ analysis of size-resolved aerosol physicochemistry, Atmos. Environ. A, 25, 3–4, 635–644, 1991.; Apel, E. C., Olson, J. R., Crawford,...

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Formation of Secondary Organic Aerosol and Oligomers from the Ozon...

By: P. Chaimbault; A. Römpp; A. Mellouki; G. Le Bras; G. K. Moortgat; A. Sadezky; R. Winterhalter

Description: Max-Planck-Institute for Chemistry, Atmospheric Chemistry Department, P.O. Box 3060, 55020 Mainz, Germany. Formation of secondary organic aerosol has been observed in the gas phase ozonolysis of a series of enol ethers, among them several alkyl vinyl ethers (AVE, ROCH=CH2), such as ethyl, propyl, n-butyl, iso-butyl, t-butyl vinyl ether, and ethyl propenyl ether (EPE, C2H5OCH=CHCH3). The ozo...

Barton, M., Ebdon, J. R., Foster, A. B., and Rimmer, S.: Ozonolysis of tetramethylethylene: Characterization of cyclic and open-chain oligoperoxidic products, J. Org. Chem., 69, 6967–6973, 2004.; Bonn, B., Schuster, G., and Moortgat, G. K.: Influence of water vapor on the process of new particle formation during monoterpene ozonolysis, J. Phys. Chem. A, 106, 2869–2881, 2002.; Bunnelle, W. H.: Preparation, properties, and reactions of carbonyl oxides, Chem. Rev., 91, 335–...

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Investigation of the Sources and Processing of Organic Aerosol Ove...

By: A. C. Aiken; B. De Foy; I. M. Ulbrich; T. Campos; E. J. Dunlea; J. Crounse; P. F. Decarlo; D. Knapp; P. O. Wennberg; J. L. Jimenez; A. J. Weinheimer

Description: Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder, CO, USA. Organic aerosol (OA) represents approximately half of the submicron aerosol in Mexico City and the Central Mexican Plateau. This study uses the high time resolution measurements performed onboard the NCAR/NSF C-130 aircraft during the MILAGRO/MIRAGE-Mex field campaign in March 2006 to investigate the sources and chemical processing ...

Cappa, C. D. and Jimenez, J. L.: Quantitative estimates of the volatility of ambient organic aerosol, Atmos. Chem. Phys. Discuss., 10, 1901–1938, 2010.; Aiken, A. C., DeCarlo, P. F., and Jimenez, J. L.: Elemental Analysis of Organic Species with Electron Ionization High-Resolution Mass Spectrometry, Anal. Chem., 79(21), 8350-�8358, 2007.; Aiken, A. C., DeCarlo, P. F., Kroll, J. H., Worsnop, D. R., et al.: O/C and OM/OC ratios of primary, secondary, and ambient organic ae...

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Uncertainties in Estimating Mercury Emissions from Coal-fired Powe...

By: S. X. Wang; J. M. Hao; Y. Wu; D. G. Streets

Description: Department of Environmental Science and Engineering, and State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing, China. A detailed multiple-year inventory of mercury emissions from anthropogenic activities in China has been developed. Coal combustion and nonferrous metals production continue to be the two leading mercury sources in China, together contributing ~80% of total mercury emissions. With...

China Power Industry: 2004 China Power Yearbook, China Power Press, Beijing, China, 2004.; Banic, C. M., Beauchamp, S. T., Tordon, R. J., Schroeder, W. H., Steffen, A., Anlauf, K. A., and Wong, H. K. T.: Vertical distribution of gaseous elemental mercury in Canada, J. Geophys. Res., 108 (D9), 4264, doi:10.1029/2002JD002116, 2003.; Chen, L., Duan, Y., Zhuo, Y., Yang, L., Zhang, L., Yang, X., Yao, Q., Jiang,  Y., and Xu, X.: Mercury transformation across particulate contro...

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Modeling the Formation and Aging of Secondary Organic Aerosols in ...

By: A. G. Carlton; S. Alvarez; R. Ahmadov; T. E. Kleindienst; P. Zotter; J. L. Jimenez; J. H. Offenberg; R. A. Washenfelder; P. L. Hayes; W. C. Kuster; J. A. De Gouw; B. Rappenglück; S. Szidat; J. B. Gilman; K. R. Baker; A. S. H. Prévôt

Description: Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder, CO, USA. Four different parameterizations for the formation and evolution of secondary organic aerosol (SOA) are evaluated using a 0-D box model representing the Los Angeles Metropolitan Region during the CalNex 2010 field campaign. We constrain the model predictions with measurements from several platforms and compare predictions with particle and ga...

Ahmadov, R., McKeen, S. A., Robinson, A. L., Bahreini, R., Middlebrook, A. M., de Gouw, J. A., Meagher, J., Hsie, E. Y., Edgerton, E., Shaw, S., and Trainer, M.: A volatility basis set model for summertime secondary organic aerosols over the eastern United States in 2006, J. Geophys. Res.-Atmos., 117, D06301, 2012.; Aiken, A. C., DeCarlo, P. F., and Jimenez, J. L.: Elemental analysis of organic species with electron ionization high-resolution mass spectrometry, Anal. Che...

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A Better Understanding of Hydroxyl Radical Photochemical Sources i...

By: G. Mailhot; M. Brigante; A. Bianco; L. Deguillaume; N. Chaumerliac; C. Mouchel-vallon; M. Passananti; H. Perroux; G. Voyard

Description: Université Clermont Auvergne, Université Blaise Pascal, Institut de Chimie de Clermont-Ferrand, BP 10448, 63000 Clermont-Ferrand, France. The oxidative capacity of the cloud aqueous phase is investigated during three field campaigns from 2013 to 2014 at the top of the puy de Dôme station (PUY) in France. Forty-one cloud samples are collected, and the corresponding air masses are classified as highly marine, marine and continental. Hydroxyl radical (HO<...

Albinet, A., Minero, C., and Vione, D.: Photochemical generation of reactive species upon irradiation of rainwater: negligible photoactivity of dissolved organic matter, Sci. Total Environ., 408, 3367–3373, 2010.; Altieri, K. E., Seitzinger, S. P., Carlton, A. G., Turpin, B. J., Klein, G. C., and Marshall, A. G.: Oligomers formed through in-cloud methylglyoxal reactions: chemical composition, properties, and mechanisms investigated by ultra-high resolution FT-ICR mass sp...

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Atmospheric Ice Nuclei in the Eyjafjallajökull Volcanic Ash Plume ...

By: T. Herrmann; W. Haunold; M. Ebert; S. Weinbruch; H. Bingemer; K. Ardon-dryer; Z. Levin; K. Kandler; U. Bundke; J. Curtius; A. Judt; D. Müller-ebert; H. Klein

Description: Institute for Atmospheric and Environmental Sciences, Goethe-University, Frankfurt/M, Germany. Explosive volcanism affects weather and climate. Primary volcanic ash particles which act as ice nuclei (IN) can modify the phase and properties of cold tropospheric clouds. During the Eyjafjallajökull volcanic eruption we have measured the highest ice nucleus number concentrations (>600 L) in our record of 2 years of daily IN measurements in central Germany. ...

Ansmann, A., Tesche, M., Gro{ß}, S., Freudenthaler, V., Seifert, P., Hiebsch, A., Schmidt, J., Wandinger, U., Mattis, I., Müller, D., and Wiegner, M.: The 16 April 2010 major volcanic ash plume over central Europe: EARLINET lidar and AERONET photometer observations at Leipzig and Munich, Germany, Geophys. Res. Lett., 37, L13810, doi:10.1029/2010GL043809, 2010.; Bretherton, C. S. and Hartmann, D. L.: Large-scale control on cloudiness, in: Clouds in the Perturbed Climate S...

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Overview of the European Project Fumapex : Volume 6, Issue 7 (08/0...

By: A. Baklanov

Description: Danish Meteorological Institute, DMI, Lyngbyvej 100, Copenhagen, DK-2100, Denmark. The quality of the urban air pollution forecast critically depends on the mapping of emissions, the urban air pollution models, and the meteorological data. The quality of the meteorological data should be largely enhanced by using downscaled data from advanced numerical weather prediction models. These different topics, as well as the application of population exposure m...

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The Atmospheric Chemistry and Canopy Exchange Simulation System (A...

By: R. D. Saylor

Description: National Oceanic and Atmospheric Administration, Air Resources Laboratory, Atmospheric Turbulence and Diffusion Division, 456 S. Illinois Ave., Oak Ridge, TN 37830, USA. Forest canopies are primary emission sources of biogenic volatile organic compounds (BVOCs) and have the potential to significantly influence the formation and distribution of secondary organic aerosol (SOA) mass. Biogenically-derived SOA formed as a result of emissions from the wide...

Baldocchi, D. D. and Meyers, T. P.: Turbulence structure in a deciduous forest, Bound.-Lay. Meteorol., 43, 345–364, 1988.; Altieri, K. E., Carlton, A. G., Turpin, B. J., and Seitzinger, S.: Formation of oligomers in cloud-processing: Reactions of isoprene oxidation products, Environ. Sci. Technol., 40, 4956–4960, 2006.; Altieri, K. E., Seitzinger, S. P., Carlton, A. G., Turpin, B. J., Klein, G.  C., and Marshall, A. G.: Oligomers formed through in-cloud methylglyoxal rea...

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Satellite Constraint for Emissions of Nitrogen Oxides from Anthrop...

By: J.-t. Lin

Description: Laboratory for Climate and Ocean-Atmosphere Studies, Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing 100871, China. Vertical column densities (VCDs) of tropospheric nitrogen dioxide (NO2) retrieved from space provide valuable information to estimate emissions of nitrogen oxides (NOx) inversely. Accurate emission attribution to individual sources, important both for understand...

Boersma, K. F., Eskes, H. J., Meijer, E. W., and Kelder, H. M.: Estimates of lightning NOx production from GOME satellite observations, Atmos. Chem. Phys., 5, 2311–2331, doi:10.5194/acp-5-2311-2005, 2005.; Boersma, K. F., Eskes, H. J., Veefkind, J. P., Brinksma, E. J., van der A, R. J., Sneep, M., van den Oord, G. H. J., Levelt, P. F., Stammes, P., Gleason, J. F., and Bucsela, E. J.: Near-real time retrieva...

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Evaluation of the Meris Aerosol Product Over Land with Aeronet : V...

By: O. Aznay; J. Vidot; R. Santer

Description: Laboratoire de Météorologie Physique (LaMP), Observatoire de Physique du Globe de Clermont-Ferrand, Université Blaise Pascal, Clermont-Ferrand, France. The Medium Resolution Imaging Spectrometer (MERIS) launched in February 2002 on-board the ENVISAT spacecraft is making global observations of top-of-atmosphere (TOA) radiances. Aerosol optical properties are retrieved over land using Look-Up Table (LUT) based algorithm and surface reflectances in the blue...

% vor jede Referenz Abdou, W. A., Diner, D. J., Martonchik, J. V., Bruegge, C. J., Kahn, R. A., Gaitley, B. J., Crean, K. A., Remer, L. A., and Holben, B.: Comparison of coincident Multiangle Imaging Spectroradiometer and Moderate Resolution Imaging Spectroradiometer aerosol optical depths over land and ocean scenes containing Aerosol Robotic Network sites, J. Geophys. Res., 110, D10S07, doi:10.1029/2004JD004693, 2005.; % vor jede Referenz Aznay, O. and Santer, R.: Valid...

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Characterization of Ultrafine Particle Number Concentration and Ne...

By: C.-y. Tsai; W.-r. Huang; H. C. Cheung; C. C.-k. Chou

Description: Research Center for Environmental Changes, Academia Sinica, Taipei 11529, Taiwan. An intensive aerosol characterization experiment was performed at the Taipei Aerosol and Radiation Observatory (TARO, 25.02° N, 121.53° E) in the urban area of Taipei, Taiwan during July 2012. Number concentration and size distribution of aerosol particles were measured continuously, which were accompanied by concurrent measurements of mass concentration of submicron parti...

Chang, S.-C. and Lee, C.-T.: Evaluation of the trend of air quality in Taipei, Taiwan from 1994 to 2003, Environ. Monit. Assess., 127, 87–96, 2007a.; Chang, S.-C. and Lee, C.-T.: Secondary aerosol formation through photochemical reactions estimated by using air quality monitoring data in Taipei City from 1994 to 2003, Atmos. Environ., 41, 4002–4017, 2007b.; Charlson, R. J., Schwartz, S. E., Hales, J. M., Cess, R. D., Coakley Jr., J. A., Hansen, J. E., and Hofmann, D. J.:...

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Mass Yields of Secondary Organic Aerosols from the Oxidation of Α-...

By: S. Romakkaniemi; P. Yli-pirilä; J. Rinne; J. H. Kroll; J. Joutsensaari; J. K. Holopainen; D. R. Worsnop; P. Miettinen; A. Kortelainen; M. K. Kajos; J. N. Smith; P. Vaattovaara; M. Kulmala; L. Q. Hao; J. Heijari; A. Jaatinen; P. Tiitta; A. Laaksonen

Description: Department of Physics and Mathematics, University of Eastern Finland, Kuopio 70211, Finland. Biogenic volatile organic compounds (VOCs) are a significant source of global secondary organic aerosol (SOA); however, quantifying their aerosol forming potential remains a challenge. This study presents smog chamber laboratory work, focusing on SOA formation via oxidation of the emissions of two dominant tree species from boreal forest area, Scots pine (Pinu...

Allan, J. D., Alfarra, M. R., Bower, K. N., Coe, H., Jayne, J. T., Worsnop, D. R., Aalto, P. P., Kulmala, M., Hyötyläinen, T., Cavalli, F., and Laaksonen, A.: Size and composition measurements of background aerosol and new particle growth in a Finnish forest during QUEST 2 using an Aerodyne Aerosol Mass Spectrometer, Atmos. Chem. Phys., 6, 315–327, doi:10.5194/acp-6-315-2006, 2006.; Baltensperger, U., Kalberer, M., Dommen, J., Paulsen, D., Alfarra, M. R., Coe, H., Fisseh...

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Metal Layers at High Altitudes: a Possible Connection to Meteoroid...

By: J. S. Friedman; J. Höffner

Description: Leibniz-Institute of Atmospheric Physics, Kühlungsborn, Germany. In the past, many studies have been carried out to demonstrate the influence of meteoroids on the atmospheric metal layer, observed roughly in the altitude range 80–105 km. Even with the capability of present day resonance lidars to measure metal densities within single meteor trails, it has been difficult to prove any influence of meteors on the average metal layer. In contrast to approa...

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Hygroscopicity and Composition of Alaskan Arctic Ccn During April ...

By: R. Bahreini; K. D. Froyd; J. S. Holloway; C. A. Brock; R. H. Moore; A. Nenes; J. Cozic; A. M. Middlebrook; D. M. Murphy

Description: School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA. We present a comprehensive characterization of cloud condensation nuclei (CCN) sampled in the Alaskan Arctic during the 2008 Aerosol, Radiation, and Cloud Processes affecting Arctic Climate (ARCPAC) project, a component of the POLARCAT and International Polar Year (IPY) initiatives. Four distinct air mass types were sampled including relatively pristine...

Aiken, A. C., DeCarlo, P. F., Kroll, J. H., Worsnop, D. R., Huffman, J. A., Docherty, K. S., Ulbrich, I. M., Mohr, C., Kimmel, J. R., Sueper, D., Sun, Y., Zhang, Q., Trimborn, A., Northway, M., Ziemann, P. J., Canagaratna, M. R., Onasch, T. B., Alfarra, M. R., Prevot, A. S., Dommen, J., Duplissy, J., Metzger, A., Baltensperger, U., and Jimenez, J. L.: O/C and OM/OC ratios of primary, secondary, and ambient organic aerosols with high-resolution time-of-flight aerosol mass...

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Satellite Observations of Cloud Regime Development: the Role of Ae...

By: D. G. Partridge; P. Stier; E. Gryspeerdt

Description: Department of Physics, University of Oxford, UK. Many different interactions between aerosols and clouds have been postulated, based on correlations between satellite retrieved aerosol and cloud properties. Previous studies highlighted the importance of meteorological covariations to the observed correlations.

In this work, we make use of multiple temporally-spaced satellite retrievals to observe the development of cloud regimes. The observati...

Efron, B.: Bootstrap methods: Another look at the jackknife, Ann. Stat., 7, 1–26, 1979.; Chen, S. S. and Houze, R. A.: Diurnal variation and life-cycle of deep convective systems over the tropical pacific warm pool, Q. J. Roy Meteor. Soc., 123, 357–388, doi:10.1002/qj.49712353806, 1997.; Dee, D. P., Uppala, S. M., Simmons, A. J., Berrisford, P., Poli, P., Kobayashi, S., Andrae, U., Balmaseda, M. A., Balsamo, G., Bauer,...

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Application of Positive Matrix Factorization to On-road Measuremen...

By: S. C. Herndon; L. C. Marr; W. B. Knighton; L. T. Molina; D. A. Thornhill; M. Zavala; C. E. Kolb; T. B. Onasch; A. E. Williams; E. Wood

Description: Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA, USA. The goal of this research is to quantify diesel- and gasoline-powered motor vehicle emissions within the Mexico City Metropolitan Area (MCMA) using on-road measurements captured by a mobile laboratory combined with positive matrix factorization (PMF) receptor modeling. During the MCMA-2006 ground-based component of the MILAGRO field campaign, the Aerodyne M...

Ban-Weiss, G. A., McLaughlin, J. P., Harley, R. A., Kean, A. J., Grosjean, E., and Grosjean, D.: Carbonyl and nitrogen dioxide emissions from gasoline- and diesel-powered motor vehicles, Environ. Sci. Technol., 42, 3944–3950, 2008a.; Ban-Weiss, G. A., McLaughlin, J. P., Harley, R. A., Lunden, M. M., Kirchstetter, T. W., Kean, A. J., Strawa, A. W., Stevenson, E. D., and Kendall, G. R.: Long-term changes in emissions of nitrogen oxides and particulate matter from on-road g...

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Temperature and Sunlight Controls of Mercury Oxidation and Deposit...

By: B. Lefer; D. Tanner; D. Lew; C. Moore; G. Huey; S. Brooks

Description: NOAA ATDD, 456 S. Illinois Ave, P.O. Box 2456, Oak Ridge, TN 38731, USA. We conducted the first ever mercury speciation measurements atop the Greenland ice sheet at Summit Station (Latitude 72.6° N, Altitude 3200 m) in the Spring and Summer of 2007 and 2008. These measurements were part of the GSHOX campaigns investigating the importance of halogen chemistry in this remote environment. Significant levels of BrO (1–5 pptv) in the near surface air were of...

Ariya, P. A., Khalizov, A., and Gidas, A.: Reactions of Gaseous Mercury with Atomic and Molecular Halogens: Kinetics, Product Studies, and Atmospheric Implications, J. Phys. Chem. A, 106, 7310–7320, 2002.; Ariya, P. A., Dastoor, A., Amyot, M., Schroeder, W., Barrie, L., Anlauf, K., Raofie, F., Ryzhkov, A., Davignon, D., Lalonde, J., and Steffen, A.: Arctic: A sink for mercury, Tellus, 56B, 397–403, 2004.; Bales, R. C., McConnell, J. R., Mosley-Thompson, E., and Csatho, B...

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Long-term (2001–2012) Fine Particulate Matter (Pm2.5) and the Impa...

By: J. Lelieveld; C. X. Cao; S. Zheng; A. Pozzer

Description: State Key Laboratory of Remote Sensing Science, Jointly Sponsored by the Institute of Remote Sensing and Digital Earth of Chinese Academy of Sciences and Beijing Normal University, Beijing, China. Beijing, the capital of China, is a densely populated city with poor air quality. The impact of high pollutant concentrations, in particular of aerosol particles, on human health is of major concern. The present study uses Aerosol Optical Depth (AOD) as pr...

Akimoto, H.: Global air quality and pollution, Science, 302, 1716–1719, 2003.; Anenberg, S. C., Horowitz, L. W., Tong, D. Q., and West, J. J.: An estimate of the global burden of anthropogenic ozone and fine particulate matter on premature human mortality using atmospheric modeling, Environ. Health Persp., 118, 1189–1195, 2010.; Ångström, A.: The parameters of atmospheric turbidity, Tellus, 16, 64–75, 1964.; Brauer, M., Amann, M., Burnett, R. T., Cohen, A., Dentener, F.,...

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Lightning NoX Emissions Over the USA Investigated Using Tes, Nldn,...

By: A. M. Thompson; H. M. Worden; K. E. Pickering; J. Worden; L. Jourdain; S. S. Kulawik

Description: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive Pasadena, CA 91109, USA. Knowledge of the lightning source of NOx is required to better understand NOx and ozone distributions and changes in the troposphere, the oxidising capacity of the troposphere as well as some of the feedbacks between chemistry and climate change. In this paper, we use the National Lightning Detection (NLDN) and th...

Beer,~R., Glavich~T A., and Rider~D M.: Tropospheric Emission Spectrometer for the Earth Observing System's Aura satellite, Appl. Optics, 40, 2356–2367, 2001.; Beer,~R.: TES on the Aura mission: Scientific objectives, measurements, and analysis overview, IEEE T. Geosci. Remote, 44, 1102–1105, 2006.; Boccippio,~D J., Cummins,~K L., Christian,~H J., et al.: Combined satellite- and surface-based estimation of the intracloud-cloud-to-ground lightning ratio over the continent...

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