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A Bayesian Inversion Estimate of N2O Emissions for Western and Cen...

By: C. Gerbig; C. Rödenbeck; R. L. Thompson

Description: Laboratoire des Sciences du Climat et l'Environnement (LSCE), UMR8212, Gif-sur-Yvette, France. A Bayesian inversion approach was used to retrieve temporally and spatially resolved N2O fluxes for western and central Europe using in-situ atmospheric observations from the tall tower site at Ochsenkopf, Germany (50°01´ N, 11°48´ E). For atmospheric transport, the STILT (Stochastic Time-Inverted Lagrangian Transport) model was employed, which was ...

Biraud, S., Ciais, P., Ramonet, M., Simmonds, P., Kazan, V., Monfray, P., O'Doherty, S., Spain, G., and Jennings, S. G.: Quantification of carbon dioxide, methane, nitrous oxide and chloroform emissions over Ireland from atmospheric observations at Mace Head, Tellus, 54B, 41–60, 2002.; Bremner, J. M.: Sources of nitrous oxide in soils, Nutrient Cycling in Agroecosystems, 49(1–3), 7–16, 1997.; Chevallier, F., Bréon, F.-M., and Rayner, P. J.: Contribution of the Orbiting C...

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Comparison of Global Inventories of Monthly Co Emissions Derived f...

By: D. Stroppiana; B. Guillaume; P. A. Brivio; G. Pétron; A. Mieville; C. Granier; M. Chin; J.-m. Grégoire; C. Liousse

Description: CNR, Istituto per il Rilevamento Elettromagnetico dell'Ambiente, Milano, Italy. Five global inventories of monthly CO emissions named VGT, ATSR, MODIS, GFED2 and MOPITT and based on remotely sensed active fires and/or burned area products for the year 2003 are compared. The objective is to highlight similarities and differences focusing on the geographical and temporal distribution of the emissions at the global and continental scale and for three broa...

Andreae, M. O. and Merlet, P.: Emission of trace gases and aerosols from biomass burning, Global Biogeochem. Cy., 15, 955–966, 2001.; Assamoi, E. and Liousse, C.: Focus on the impact of two wheel vehicles on African combustion aerosols emissions, Atmos. Environ., in review, 2010.; Anyamba, A., Justice, C. O., Tucker, C. J., and Mahoney, R.: Seasonal to interannual variability of vegetation and fires at SAFARI 2000 sites inferred from advanced very high resolution radiome...

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An Intensive Study of Aerosol Optical Properties in Beijing Urban ...

By: Z. Deng; A. K. H. Lau; M. Wang; C. Li; X. Liu; J. Mao; X. He

Description: Dept. of Atmospheric Sciences, School of Physics, Peking University (PKU), Beijing, China. In order to quantify the aerosol impact on climate, a range of aerosol parameters is required. In this paper, two-year ground-based observations of aerosol optical properties are conducted at an urban site in Beijing of China. Aerosol absorption coefficient (Σa) and scattering coefficient (Σs), as well as single scattering albedo...

Ando, M., Katagiri, K., Tamura, K., et al.}: Indoor and outdoor air pollution in Tokyo and Beijing supercities, {Atmos. Environ., 30, 695–702, 1994.; Arnott, W. P., Moosmuller, H., Sheridan, P. J., et al.}: Photoacoustic and filter-based ambient aerosol light absorption measurements: Instrument comparisons and the role of relative humidity, {J. Geophys. Res., 108(D1), 4034, doi:10.1029/2002JD002165, 2003.; Barnard, J. C., Kassianov, E. I., Ackerman, T. P., Johnson, K., Z...

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Impacts of Atmospheric Circulations on Aerosol Distributions in Au...

By: Y.-j. Yang; G.-s. Liu; Y.-f. Fu; X.-y. Zheng

Description: School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, China. Regional heavy pollution events in East China (110–122° E, 28–40° N) are the main environmental problems recently because of the high urbanization and rapid economic development connected with too much emissions of pollutants. However, appropriate weather condition is another factor which cannot be ignored for the...

Russo, A., Trigo, R. M., Martins, H., and Mendes, M. T.: NO2, PM10 and O3 urban concentrations and its association with circulation weather types in Portugal, Atmos. Environ., 89, 768–785, 2014.; Saavedra, S., Rodríguez, A., Taboada, J. J., Souto, J. A., and Casares, J. J.: Synoptic patterns and air mass transport during ozone episodes in northwestern Iberia, Sci. Total Environ., 441, 97–110, 2012.; Tanner, P. A. and Law, P. T.: Effects o...

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Assimilation of Atmospheric Methane Products Into the MacC-ii Syst...

By: O. Hasekamp; I. Aben; A. Agusti-panareda; A. Butz; S. Massart; R. Engelen; F. Chevallier; C. Frankenberg; C. Crevosier

Description: European Centre for Medium-Range Weather Forecasts, Reading, UK. The Monitoring Atmospheric Composition and Climate Interim Implementation (MACC-II) delayed-mode (DM) system has been producing an atmospheric methane (CH4) analysis 6 months behind real time since June 2009. This analysis used to rely on the assimilation of the CH4 product from the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) inst...

Bergamaschi, P., Frankenberg, C., Meirink, J. F., Krol, M., Dentener, F., Wagner, T., Platt, U., Kaplan, J. O., Körner, S., Heimann, M., Dlugokencky, E. J., and Goede, A.: Satellite chartography of atmospheric methane from SCIAMACHY on board ENVISAT: 2. Evaluation based on inverse model simulations, J. Geophys. Res., 112, D02304, doi:10.1029/2006JD007268, 2007.; Bergamaschi, P., Frankenberg, C., Meirink, J. F., Krol, M.,...

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The High Arctic in Extreme Winters: Vortex, Temperature, and Mls a...

By: W. H. Daffer; K. B. Strawbridge; M. L. Santee; P. F. Bernath; K. A. Walker; E. E. Remsberg; H. C. Pumphrey; N. J. Livesey; K. Krüger; A. Lambert; M. G. Mlynczak; C. D. Boone; R. J. Sica; G. L. Manney; T. Kerzenmacher; K. Strong; J. R. Russell III; M. J. Schwartz

Description: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA. The first three Arctic winters of the ACE mission represented two extremes of winter variability: Stratospheric sudden warmings (SSWs) in 2004 and 2006 were among the strongest, most prolonged on record; 2005 was a record cold winter. Canadian Arctic Atmospheric Chemistry Experiment (ACE) Validation Campaigns were conducted at Eureka (80° N, 86° W) during each of these wi...

Bernath, B F., McElroy, C. T., Abrams, M. C., et~al.: Atmospheric Chemistry Experiment (ACE): mission overview, Geophys. Res. Lett., 32, L15S01, doi:10.1029/2005GL022386, 2005.; Bloom, S C., McElroy, C. T., Abrams, M. C., et~al.: The Goddard Earth Observing Data Assimilation System, GEOS DAS Version 4.0.3: Documentation and Validation, Tech. Rep. 104606 V26, NASA, 2005.; Boone, C D., Nassar, R., Walker, K A., Rochon, Y., McLeod, S D., Rinsland, C P., and Bernath, P F.: R...

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Analysis of the Vertical Structure and Size Distribution of Dust A...

By: L. Zhang; X. Li; X. Cao; J. Shi; J. Huang; B. Zhou; J. Bi

Description: Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou, 730000, China. Using measurements of dual-wavelength polarisation lidar, particle sizer, and nephelometer from the Semi-Arid Climate and Environment Observatory of Lanzhou University (SACOL), the properties of dust aerosol extinction coefficient, optical depth, depolarisation ratio, colour ratio, size distribution, and c...

Ackerman, A. S., Toon, O. B., Stevens, D. E., Heymsfield, A. J., Ramanathan, V., and Welton, E. J.: Reduction of tropical cloudiness by soot, Science, 288, 1042–1047, doi:10.1126/science.288.5468.1042, 2000.; Bi, J. R., Huang, J. P., Fu, Q., Wang, X., Shi, J. S., Zhang, W., Huang, Z. W., and Zhang, B. T.: Toward characterization of the aerosol optical properties over Loess Plateau of Northwestern China, J. Quant...

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Estimating the Contribution of Ion–ion Recombination to Sub-2 Nm C...

By: K. E. J. Lehtinen; T. Nieminen; V.-m. Kerminen; H. E. Manninen; J. Kontkanen; K. Lehtipalo; M. Kulmala

Description: Department of Physics, University of Helsinki, Helsinki, Finland. The significance of ion–ion recombination for atmospheric new particle formation is not well quantified. Here we present and evaluate a method for determining the size distribution of recombination products from the size distributions of neutral and charged clusters. We applied this method to the data measured in Hyytiälä, Finland, to estimate the contribution of ion–ion recombinat...

Aalto, P. P., Hämeri, K., Becker, E., Weber, R., Salm, J., Mäkelä, J. M., Hoell, C., O'Dowd, C. D., Karlsson, H., Hansson, H., Väkevä, M., Koponen, I., Buzorius, G., and Kulmala, M.: Physical characterization of aerosol particles during nucleation events, Tellus B, 53, 344–358, 2001.; Bates, D. R.: Ion–ion recombination in an ambient gas, Adv. Atom. Mol. Phys., 20, 1–40, 1985.; Biondi, M.: Atmospheric electron-ion and ion–ion recombination processes, Can. J. Chemistry, 4...

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Coastal Zone Production of Io Precursors: a 2-dimensional Study : ...

By: U. Platt; P. S. Liss; L. J. Carpenter; K. Hebestreit

Description: Department of Chemistry, University of York, York, YO10 5DD, UK. At Mace Head, Eire, in the coastal East Atlantic, diiodomethane has been identified as an important precursor of iodine oxide radicals. Peak concentrations of both CH2I2 and IO at low water indicate that the intertidal region is a strong source of organo-iodines. Atmospheric measurements of CH2I2 made in marine air are compared with the co...

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Aerosol Effects on the Cloud-field Properties of Tropical Convecti...

By: S.-s. Lee; G. Feingold

Description: NOAA Earth System Research Laboratory, Chemical Sciences Division, Boulder, Colorado, USA. Aerosol effects on condensed water and precipitation in a tropical cloud system driven by deep convective clouds are investigated for two-dimensional simulations of two-day duration. Although an assumed ten-fold increase in aerosol concentration results in a similar temporal evolution of mean precipitation and a small (9%) difference in cumulative precipitation b...

Albrecht, B. A.: Aerosols, cloud microphysics, and fractional cloudiness, Science, 245, 1227–1230, 1989.; Barker, H. W.: A parameterization for computing grid averaged solar fluxes for inhomogeneous marine boundary layer clouds. Part I: Methodology and homogeneous biases, J. Atmos. Sci., 53, 2289–2303, 1996.; Batterbury, S. and Warren, A.: The African Sahel 25 years after the great drought: assessing progress and moving towards new agendas and approaches, Glob. Environ. ...

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Three-dimensional Effects in Polarization Signatures as Observed f...

By: H. Czekala; C. Simmer; A. Battaglia

Description: Meteorological Institute, University of Bonn, Bonn, Germany. Consistent negative polarization differences (i.e. differences between the vertical and the horizontal brightness temperature) are observed when looking at precipitating systems by ground-based radiometers at slant angles. These signatures can be partially explained by one-dimensional radiative transfer computations that include oriented non-spherical raindrops. However some cases are charact...

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Influence of Semi-volatile Species on Particle Hygroscopic Growth ...

By: M. Monier; K. Sellegri; P. Laj; P. Villani

Description: UMR6016, Laboratoire de Météorologie Physique (LaMP), Observatoire de Physique du Globe de Clermont-Ferrand Université Blaise Pascal, Clermont-Ferrand, France. The hygroscopic properties of aerosol particles are often related to their content of soluble material, on the basis of the Kohler theory. Recent studies, however, seem to indicate that the role of aerosol particle semi-volatile fraction properties has been underestimated. In this study, we use a ...

Andrews, E. and Larson, S. M.: Effect of surfactant layers on the size changes of aerosol particles as a function of relative humidity, Environ. Sci. Technol. 27, 857–865, 1993.; Ansari, A. S. and Pandis, S. N.: Water absorption by secondary organic aerosol and its effect on inorganic aerosol behavior, Environ. Sci. Technol., 34, 71–77, 2000.; Berg, O. H., E. Swietlicki, G. Frank, B.G. Martinsson, S.-I. Cederfelt, P. Laj, L. Ricci, A. Berner, U., Dusek, Z., Galambos, N. ...

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Comparison of Omi No2 Tropospheric Columns with an Ensemble of Glo...

By: O. Stein; H. J. Eskes; D. Melas; V.-h. Peuch; R. Bergstrom; B. Amstrup; A. Poupkou; M. D'Isidoro; I. Kioutsioukis; A. Strunk; H. Elbern; A. Valdebenito; A. Gross; K. F. Boersma; E. Friese; M. Sofiev; A. Maurizi; L. Robertson; D. Zyryanov; V. Huijnen; J. Flemming; G. Foret; C. Zerefos

Description: Royal Netherlands Meteorological Institute, De Bilt, The Netherlands. We present model results for tropospheric NO2 from 9 regional models and 2 global models that are part of the GEMS-RAQ forecast system, for July 2008 to June 2009 over Europe. These modeled NO2 columns are compared with OMI NO2 satellite retrievals and surface observations from the Dutch Air Quality Network. The participating models apply principally t...

Acarreta, J., Haan, J. D., and Stammes, P.: Cloud pressure retrieval using the O2-O2 absorption band at 477 nm, J. Geophys. Res., 109, D05204, doi:10.1029/2003JD003915, 2004.; Andersson, C., Langner, J., and Bergström, R.: Interannual variation and trends in air pollution over Europe due to climate variability during 1958–2001 simulated with a regional CTM coupled to the ERA40 reanalysis, Tellus B, 59, 77–98, 2007.; Andersson-Sköld, Y. ...

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Ionic and Carbonaceous Compositions of Pm10, Pm2.5 and Pm1.0 at Go...

By: G. Lee; S. Kim; M. Lee; K. Kang; S. Lim; S. Yoon

Description: Dep. of Earth and Environmental Sciences, Korea University, Seoul, South Korea. PM1.0, PM2.5, and PM10 were sampled at Gosan ABC Superstation on Jeju Island from August 2007 to September 2008. The carbonaceous aerosols were quantified with the thermal/optical reflectance (TOR) method, which produced five organic carbon (OC) fractions, OC1, OC2, OC3, OC4, and pyrolyzed organic carbon (OP), and three elemental carbon (EC) f...

Aggarwal, S. G. and Kawamura, K.: Carbonaceous and inorganic composition in long-range transported aerosols over northern Japan: Implication for aging of water-soluble organic fraction, Atmos. Environ., 43,(16), 2532–2540, 2009.; Akimoto, Hajime: Global Air Quality and Pollution, Science, 302, 5651, 1716–1719, doi:10.1126/science.1092666, 2003.; Alexander, D. T. L., Crozier, P. A., and Anderson, J. R.: Brown Carbon Sp...

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Deposition and Immersion Mode Nucleation of Ice by Three Distinct ...

By: M. A. Tolbert; K. Genareau; G. P. Schill

Description: Department of Chemistry and Biochemistry and Cooperative Institution for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA. Ice nucleation on volcanic ash controls both ash aggregation and cloud glaciation, which affect atmospheric transport and global climate. Previously, it has been suggested that there is one characteristic ice nucleation efficiency for all volcanic ash, regardless of its composition, when accounting for s...

Atkinson, J. D., Murray, B. J., Woodhouse, M. T., Whale, T. F., Baustian, K. J., Carslaw, K. S., Dobbie, S., O'Sullivan, D., and Malkin, T. L.: The importance of feldspar for ice nucleation by mineral dust in mixed-phase clouds, Nature, 498, 355–358, doi:10.1038/nature12278, 2013.; Baustian, K. J., Wise, M. E., and Tolbert, M. A.: Depositional ice nucleation on solid ammonium sulfate and glutaric acid particles, Atmos. Ch...

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Diurnal and Annual Variations of Meteor Rates at the Arctic Circle...

By: U. Von Zahn; J. Weiß; W. Singer

Description: Leibniz-Institute of Atmospheric Physics, 18225 Kühlungsborn, Germany. Meteors are an important source for (a) the metal atoms of the upper atmosphere metal layers and (b) for condensation nuclei, the existence of which are a prerequisite for the formation of noctilucent cloud particles in the polar mesopause region. For a better understanding of these phenomena, it would be helpful to know accurately the annual and diurnal variations of meteor r...

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Quantifying Transport Into the Lowermost Stratosphere Using Simult...

By: A. Engel; H. Bönisch; P. Hoor; Th. Birner; J. Curtius

Description: Institute for Atmospheric and Environmental Sciences, Goethe University Frankfurt, Frankfurt am Main, Germany. The seasonality of transport and mixing of air into the lowermost stratosphere (LMS) is studied using distributions of mean age of air and a mass balance approach, based on in-situ observations of SF6 and CO2 during the SPURT (Spurenstofftransport in der Tropopausenregion, trace gas transport in the tropopause region) aircr...

Andrews, D. G., Holton, J. R., and Leovy, C. B.: Middle Atmosphere Dynamics, Academic Press, 1987.; Andrews, A. E., Boering, K. A., Daube, B. C., Wofsy, S. C., Hintsa, E. J., Weinstock, E. M., and Bui, T. P.: Empirical age spectra for the lower tropical stratosphere from in situ observations of CO2: Implications for stratospheric transport, J. Geophys. Res., 104, 26581–26595, 1999.; Andrews, A. E., Boering, K. A., Wofsy, S. C., Daube, B. C., Jones, D. B., Alex...

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Bvocs Emission in a Semi-arid Grassland Under Climate Warming and ...

By: S. Q. Wan; J. Y. Xia; X. G. Han; Y. J. Mu; H. J. Wang; L. Nie

Description: State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Xiangshan, Beijing 100093, China. Biogenic volatile organic compounds (BVOCs) profoundly affect atmospheric chemistry and ecosystem functioning. BVOCs emission and their responses to global change are still unclear in grasslands, which cover one quarter of the Earth's land surface and are currently undergoing the largest changes. Ove...

Arneth, A., Monson, R. K., Schurgers, G., Niinemets, Ü., and Palmer, P. I.: Why are estimates of global terrestrial isoprene emissions so similar (and why is this not so for monoterpenes)?, Atmos. Chem. Phys., 8, 4605–4620, doi:10.5194/acp-8-4605-2008, 2008.; Bai, J., Baker, B., Liang, B., Greenberg, J., and Guenther, A.: Isoprene and monoterpene emissions from an Inner Mongolia grassland, Atmos. Environ., 40, 5753–57...

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Averaging Kernels for Doas Total-column Satellite Retrievals : Vol...

By: K. F. Boersma; H. J. Eskes

Description: Royal Netherlands Meteorological Institute, De Bilt, The Netherlands. The Differential Optical Absorption Spectroscopy (DOAS) method is used extensively to retrieve total column amounts of trace gases based on UV-visible measurements of satellite spectrometers, such as ERS-2 GOME. In practice the sensitivity of the instrument to the tracer density is strongly height dependent, especially in the troposphere. The resulting tracer profile depend...

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Contribution from Biogenic Organic Compounds to Particle Growth Du...

By: A. Sogachev; D. Mogensen; J. N. Smith; S. Smolander; A. Rusanen; M. Kulmala; P. C. Harley; A. Turnipseed; M. Boy; R. Gierens; T. Karl; A. J. Prenni; J. Ortega; L. Zhou; A. B. Guenther; E. J. T. Levin

Description: Department of Physics, P.O. Box 64, 00014 University of Helsinki, Finland. New particle formation (NPF) is an important atmospheric phenomenon. During a NPF event, molecular clusters first form by nucleation and then grow further by condensation of vapors. The growth step is crucial because it controls the number of particles that can become cloud condensation nuclei. In order to better understand the influence of biogenic emissions on particle gro...

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.; Andreae, M. O. and Crutzen, P. J.: A...

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