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Biomass Burning Contribution to Beijing Aerosol : Volume 13, Issue...

By: K. B. He; Z. Y. Du; G. Engling; F. K. Duan; Y. Cheng; R. J. Weber; J. M. Liu; Y. L. Ma; M. Zheng

Description: State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China. Biomass burning, the largest global source of elemental carbon (EC) and primary organic carbon (OC), is strongly associated with many subjects of great scientific concern, such as secondary organic aerosol and brown carbon which exert important effects on the environment and on climate in particular. This study inves...

Adachi, K. and Buseck, P. R.: Atmospheric tar balls from biomass burning in Mexico, J. Geophys. Res., 116, D05204, doi:10.1029/2010JD015102, 2011.; Adler, G., Flores, J. M., Abo Riziq, A., Borrmann, S., and Rudich, Y.: Chemical, physical, and optical evolution of biomass burning aerosols: a case study, Atmos. Chem. Phys., 11, 1491–1503, doi:10.5194/acp-11-1491-2011, ...

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Quality Assessment of O3 Profiles Measured by a State-of-the-art G...

By: A. Redondas; T. Blumenstock; F. Hase; E. Cuevas; M. Schneider

Description: IMK-ASF, Forschungszentrum Karlsruhe, Karlsruhe, Germany. Ground-based FTIR measurements are an important component of the global atmospheric monitoring system. Their essential role in validating satellite measurements requires a precise documentation of their quality. Here we present an extensive quality documentation of ground-based FTIR O3 profiles. This is done in form of theoretical and empirical error estimations. The latter is achieved...

Barret, B., De Mazière, M., and Demoulin, P.: Retrieval and characterization of ozone profiles from solar infrared spectra at the Jungfraujoch, J. Geophys. Res, 107, 4788–4803, 2002. %; %Bojkov, B R., McPeters, R D., Bhartia, P K., Kyrö, E., %Zehner, C., Brinksma, E., Cuevas, E., Evans, R D., Goutail, F., %Ionov, D V., Kivi, R., Koehler, U., McElroy, C T., McGee, T J., %Redondas, A., Van Roozendael, M., and Walsh, B.: SAUNA - %Sodankylä Total Ozone Intercomparison and Va...

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Estimates of Global Terrestrial Isoprene Emissions Using Megan (Mo...

By: P. Harley; C. Geron; C. Wiedinmyer; A. Guenther; T. Karl; P. I. Palmer

Description: Atmospheric Chemistry Division, National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder Colorado 80305, USA. Reactive gases and aerosols are produced by terrestrial ecosystems, processed within plant canopies, and can then be emitted into the above-canopy atmosphere. Estimates of the above-canopy fluxes are needed for quantitative earth system studies and assessments of past, present and future air quality and climate. The Model of Emiss...

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The Distribution and Trends of Fog and Haze in the North China Pla...

By: J. B. Li; W. Y. Xu; R. F. Rong; C. S. Zhao; G. Q. Fu

Description: Hebei Province Meteorological Service Centre, Shijiazhuang, Hebei, China. Frequent low visibility, haze and fog events were found in the North China Plain (NCP). Data throughout the NCP during the past 30 years were examined to determine the horizontal distribution and decadal trends of low visibility, haze and fog events. The impact of meteorological factors such as wind and RH on those events was investigated. Results reveal distinct distribution...

Chang, D., Song, Y., and Liu, B.: Visibility trends in six megacities in China 1973–2007, Atmos. Res., 94, 161–167, doi:10.1016/j.atmosres.2009.05.006, 2009.; Chen, J., Zhao, C. S., Ma, N., Liu, P. F., Göbel, T., Hallbauer, E., Deng, Z. Z., Ran, L., Xu, W. Y., Liang, Z., Liu, H. J., Yan, P., Zhou, X. J., and Wiedensohler, A.: A parameterization of low visibilities for hazy days in the North China Plain, Atmos. ...

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Sample Drying to Improve Hcho Measurements by Ptr-ms Instruments: ...

By: J. K. McCoskey; B. T. Jobson

Description: Laboratory for Atmospheric Research Department of Civil and Environmental Engineering Washington State University Pullman, WA, USA. A significant improvement in the PTR-MS instrument sensitivity to formaldehyde was obtained by drying the air sample to a dew point of −30°C using a cold trap to condense and freeze water vapor. At warmer trap temperatures there was significant uptake of formaldehyde and other water soluble organics, suggesting the presence o...

Dash, J. G., Fu, H., and Wettlaufer, J. S.: The premelting of ice and its environmental consequences, Rep. Prog. Phys., 58, 115–167, 1995.; de Gouw, J. and Warneke, C.: Measurement of volatile organic compounds in the Earth's atmosphere using proton transfer reaction mass spectrometry, Mass Spectrom. Rev., 26, 223–257, 2007.; Dasgupta, P. K., Li, J., Zhang, G., Luke, W. T., Mcclenny, W. A., Stutz, J., and Freid, A.: Summertime ambient formaldehyde in five US metropolitan...

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Black Carbon Measurements in the Boundary Layer Over Western and N...

By: J. D. Allan; A. Minikin; G. R. McMeeking; E. J. Highwood; W. T. Morgan; T. Hamburger; M. Flynn; M. Northway; R. Krejci; D. Liu; H. Coe

Description: Centre for Atmospheric Science, University of Manchester, Manchester, UK. Europe is a densely populated region that is a significant global source of black carbon (BC) aerosol, but there is a lack of information regarding the physical properties and spatial/vertical distribution of BC in the region. We present the first aircraft observations of sub-micron BC aerosol concentrations and physical properties measured by a single particle soot photometer (SP...

Anderson, T. L., Covert, D. S., Marshall, S. F., Laucks, M. L., Charlson, R. J., Waggoner, A. P., Ogren, J. A., Caldow, R., Holm, R. L., Quant, F. R., Sem, G. J., Wiedensohler, A., Ahlquist, N. A., and Bates, T. S.: Performance characteristics of a high-sensitivity, three-wavelength, total scatter/backscatter nephelometer, J. Atmos. Ocean. Tech., 13, 967–986, 1996.; Andreae, M. O. and Gelencsér, A.: Black carbon or brown carbon? The nature of light-absorbing carbonaceous...

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Tropical Convective Transport and the Walker Circulation : Volume ...

By: J. A. Pyle; P. Braesicke; M. R. Russo; J. S. Hosking

Description: Centre for Atmospheric Science, University of Cambridge, UK. We introduce a methodology to visualise rapid vertical and zonal tropical transport pathways. Using prescribed sea-surface temperatures in four monthly model integrations for 2005, preferred transport routes from the troposphere to the stratosphere are found in the model over the Maritime Continent (MC) in November and February, i.e., boreal winter. In these months, the ascending branch ...

Aschmann, J., Sinnhuber, B.-M., Chipperfield, M. P., and Hossaini, R.: Impact of deep convection and dehydration on bromine loading in the upper troposphere and lower stratosphere, Atmos. Chem. Phys., 11, 2671–2687, doi:10.5194/acp-11-2671-2011, 2011.  ; Braesicke, P., Smith, O. J., Telford, P., and Pyle, J. A.: Ozone concentration changes in the Asian summer monsoon anticyclone and lower stratospheric water vapour: ...

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Airborne Observations of Trace Gases Over Boreal Canada During Bor...

By: S. J.-b. Bauguitte; M. W. Gallagher; G. Allen; J. B. A. Muller; A. C. Lewis; A. T. Archibald; M. Parrington; P. I. Palmer; C. J. Percival; M. Le Breton; S. J. O'Shea; D. E. Oram; S. M. Illingworth

Description: School of Earth, Atmospheric and Environmental Sciences, University of Manchester, Oxford Road, Manchester, M13 9PL, UK. In situ airborne measurements were made over Eastern Canada in summer 2011 as part of the BORTAS experiment (Quantifying the impact of BOReal forest fires on Tropospheric oxidants over the Atlantic using Aircraft and~Satellites). In this paper we present observations of greenhouse gases (CO2 and CH4) and other bio...

Dlugokencky, E. J., Nisbet, E. G., Fisher, R., and Lowry, D.: Global atmospheric methane: budget, changes and dangers, Philos. T. Roy. Soc. A, 369, 2058–2072, doi:10.1098/rsta.2010.0341, 2011.; Draxler, R. R. and Rolph, G. D.: HYSPLIT (HYbrid Single-Particle Lagrangian Integrated Trajectory) Model, NOAA Air Resources Laboratory, Silver Spring, MD, USA, 2003.; Forster, P. and Ramaswamy, V.: Changes in Atmospheric Consti...

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The Travel-related Carbon Dioxide Emissions of Atmospheric Researc...

By: A. Stohl

Description: Norwegian Institute for Air Research, Kjeller, Norway. Most atmospheric scientists agree that greenhouse gas emissions have already caused significant changes to the global climate system and that these changes will accelerate in the near future. At the same time, atmospheric scientists who – like other scientists – rely on international collaboration and information exchange travel a lot and, thereby, cause substantial emissions of CO2. In t...

Babikian, R., Luchachko, S. P., and Waitz, I. A.: The historical fuel efficiency characteristics of regional aircraft from technological, operational and cost perspectives, J. Air Transp. Manag., 8, 389–400, 2002.; Becken, S. and Patterson, M.: Measuring National Carbon Dioxide Emissions from Tourism as a Key Step Towards Achieving Sustainable Tourism, J. Sustainable Tourism, 14, 323–338, doi:10.2167/jost547.0, 2006.; Fabian, P. and Kärcher, B.: The impact of aviation up...

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One-year Observations of Carbonaceous and Nitrogenous Components a...

By: K. Kawamura; B. Kunwar

Description: Institute of Low Temperature Science, Hokkaido University, N19 W8, Kita-ku, Sapporo, Japan. Ambient aerosol samples (TSP, n = 50) were collected for 12 months at subtropical Okinawa Island, Japan, an outflow region of Asian dusts in the western North Pacific and analysed for organic carbon (OC), elemental carbon (EC), water-soluble organic carbon (WSOC), water-soluble total nitrogen (WSTN), water-soluble organic nitrogen (WSON) and major ions to b...

Aggarwal, S. G. and Kawamura, K.: Molecular distributions and stable carbon isotopic compositions of dicarboxylic acids and related compounds in aerosols from Sapporo, Japan: Implications for photochemical aging during long-range atmospheric transport, J. Geophys. Res., 113, D14301, doi:10.1029/2007JD009365, 2008.; Aggarwal S. G., Kawamura, K., Umarji, G. S., Tachibana, E., Patil, R. S., and Gupta, P. K.: Organic and ino...

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Validation of the Grape Single View Aerosol Retrieval for Atsr-2 a...

By: R. Siddans; A. M. Sayer; C. A. Poulsen; E. Carboni; S. H. Marsh; B. N. Lawrence; S. M. Dean; G. E. Thomas; R. G. Grainger

Description: Atmospheric, Oceanic and Planetary Physics, University of Oxford, Oxford, UK. The Global Retrieval of ATSR Cloud Parameters and Evaluation (GRAPE) project has produced a global data-set of cloud and aerosol properties from the Along Track Scanning Radiometer-2 (ATSR-2) instrument, covering the time period 1995–2001. This paper presents the validation of aerosol optical depths (AODs) from this product against AERONET sun-photometer measurement...

Berk, A., Bernstein, L. S., Anderson, G. P., Acharya, P. K., Robertson, D. C., Chetwynd, J. H., and Adler-Golden, S. M.: MODTRAN cloud and multiple scattering upgrades with application to AVIRIS, Remote Sens. Environ., 65, 367–375, 1998.; Birks A.: Improvements to the AATSR IPF relating to land surface temperature, European Space Agency Technical Note, 2004.; Cox, C. and Munk, W.: Statistics of the sea surface derived from Sun glitter, J. Mar. Res., 13, 198–227, 1954.; D...

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Relating Particle Hygroscopicity and Ccn Activity to Chemical Comp...

By: M. Merkel; S. Henning; L. Poulain; A. Wiedensohler; W. Birmili; K. Müller; F. Stratmann; Z. J. Wu; K. Dieckmann; D. Van Pinxteren; H. Herrmann; G. Spindler

Description: Leibniz Institute for Tropospheric Research, Leipzig, Germany, Permoserstraße 15, 04318 Leipzig, Germany. Particle hygroscopic growth at RH =90%, cloud condensation nuclei (CCN) activity, and size-resolved chemical composition were concurrently measured in the Thüringer Wald mid-level mountain range in central Germany in fall season of 2010. The median hygroscopicity parameter values, Κ, of 50, 75, 100, 150, 200, and 250 nm particles derived from h...

Aklilu, Y., Mozurkewich, M., Prenni, A. J., Kreidenweis, S. M., Alfarra, M. R., Allan, J. D., Anlauf, K., Brook, J., Leaitch, W. R., Sharma, S., Boudries, H., and Worsnop, D. R.: Hygroscopicity of particles at two rural, urban influenced sites during pacific 2001: comparison with estimates of water uptake from particle composition, Atmos. Environ., 40, 2650–2661, doi:10.1016/j.atmosenv.2005.11.063, 2006.; Alfar...

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Thermodynamic Derivation of the Energy of Activation for Ice Nucle...

By: D. Barahona

Description: NASA Goddard Space Flight Center, Greenbelt, MD, USA. The activation energy controls the flux of water molecules from the bulk of the liquid to the solid during the early stages of ice formation. In most studies it is estimated by direct association with the bulk properties of water, typically viscosity and self-diffusivity. As the environment in the ice–liquid interface may differ from that of the bulk this approach may introduce bias in calcula...

Adam, G. and Gibbs, J. H.: On the temperature dependence of cooperative relaxation properties in glass-forming liquids, J. Chem. Phys., 43, 139–146, 1965.; Alpert, P. A., Aller, J. Y., and Knopf, D. A.: Ice nucleation from aqueous NaCl droplets with and without marine diatoms, Atmos. Chem. Phys., 11, 5539–5555, doi:10.5194/acp-11-5539-2011, 2011.; Barahona, D.: Analysis of the effect of water activity on ice formatio...

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Corrigendum to First Direct Observation of the Atmospheric Co2 Yea...

By: J. Notholt; O. Schneising; J. P. Burrows; H. Bovensmann; M. Buchwitz; M. Reuter

Description: Institute of Environmental Physics (IUP), University of Bremen FB1, Bremen, Germany. No abstract available.

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Dimethylsulfide Gas Transfer Coefficients from Algal Blooms in the...

By: M. J. Smith; W. De Bruyn; S. D. Miller; C. S. Law; T. G. Bell; E. S. Saltzman; C. A. Marandino

Description: Plymouth Marine Laboratory, Prospect Place, The Hoe, Plymouth, PL1 3DH, UK. Air–sea dimethylsulfide (DMS) fluxes and bulk air–sea gradients were measured over the Southern Ocean in February–March 2012 during the Surface Ocean Aerosol Production (SOAP) study. The cruise encountered three distinct phytoplankton bloom regions, consisting of two blooms with moderate DMS levels, and a high biomass, dinoflagellate-dominated bloom with high seawater DMS levels...

Donelan, M. A., Haus, B. K., Plant, W. J., and Troianowski, O.: Modulation of short wind waves by long waves, J. Geophys. Res.-Ocean., 115, C10003, doi:10.1029/2009jc005794, 2010.; Edson, J. B., Hinton, A. A., Prada, K. E., Hare, J. E., and Fairall, C. W.: Direct covariance flux estimates from mobile platforms at sea, J. Atmos. Ocean. Tech., 15, 547–562, 2....

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Modelling Studies of Wind Field on Urban Environment : Volume 2, I...

By: R. Pongrácz; K. Radics; J. Bartholy

Description: Meteological Service of the Hungarian Defence Forces, Budapest, Hungary. Increasing load of air pollution in urban environment emphasises the need for detailed evaluation of wind characteristics that significantly affect the air quality of urban areas, especially, in large agglomerations. This paper includes analysis of urban wind climatology and estimation of wind profiles based on measurements of the new urban climate station located at the...

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Atmospheric Effects of Volcanic Eruptions as Seen by Famous Artist...

By: C. S. Zerefos; D. Balis; V. T. Gerogiannis; S. C. Zerefos; A. Kazantzidis

Description: National Observatory of Athens, Athen, Greece. Paintings created by famous artists, representing sunsets throughout the period 1500–1900, provide proxy information on the aerosol optical depth following major volcanic eruptions. This is supported by a statistically significant correlation coefficient (0.8) between the measured red-to-green ratios of a few hundred paintings and the dust veil index. A radiative transfer model was used to compile an indepe...

Anderson, G., Clough, S., Kneizys, F., Chetwynd, J., and Shettle, E.: AFGL Atmospheric Constituent Profiles (0–120 km), Air Force Geophysics Laboratory, AFGL-TR-86-0110, Environmental Research Paper No. 954, 1986.; Bockemuhl, M., Turner, Taschen, 2000.; Clausen, H. B. and Hammer, C. U.: The Laki and Tambora eruptions as revealed in Greenland ice cores from 11 locations, Annals of Glaciology 10, 16–22, 1988.; Deirmendijian, D.: On Volcanic and Other Particulate Turbidity ...

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The Impact of Monsoon Outflow from India and Southeast Asia in the...

By: J. Lelieveld; M. De Reus; G. J. Roelofs; M. Lawrence; J. Williams; C. Van Der Veen; H. Fischer; H. A. Scheeren; J. A. De Gouw; R. Holzinger; H. Schlager; M. Bolder; T. Klüpfel; C. Warneke

Description: Institute for Marine and Atmospheric Research Utrecht (IMAU), Utrecht University, The Netherlands. A major objective of the Mediterranean INtensive Oxidant Study (MINOS) was to investigate long-range transport of pollutants (notably ozone precursor species). Here we present trace gas measurements from the DLR (German Aerospace Organization) Falcon aircraft in the eastern Mediterranean troposphere. Ten day backward trajectories and a coupled c...

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Experimental Investigation of Homogeneous Freezing of Sulphuric Ac...

By: C. Linke; R. Tiede; W. Haag; S. Schaefers; O. Stetzer; K. Mauersberger; H. Saathoff; U. Schurath; P. Zink; J. Schreiner; M. Schnaiter; M. Krämer; A. Mangold; P. Budz; B. Kärcher; O. Möhler

Description: Forschungszentrum Karlsruhe, Institute of Meteorology and Climate Research, Karlsruhe, Germany. The homogeneous freezing of supercooled H2SO4/H2O solution droplets was investigated in the aerosol chamber AIDA (Aerosol Interactions and Dynamics in the Atmosphere) of Forschungszentrum Karlsruhe. 24 freezing experiments were performed at temperatures between 194 and 235 K with aerosol particles in the diameter ra...

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Variability of Air Ion Concentrations in Urban Paris : Volume 15, ...

By: H. E. Manninen; E. Herrmann; T. Nieminen; P. P. Aalto; T. Hussein; K. Hämeri; M. Merkel; T. Petäjä; V. N. Dos Santos; M. Kulmala; A. Wiedensohler; J. Hakala

Description: University of Helsinki, Department of Physics, P.O. Box 48, 00 560 Helsinki, Finland. Air ion concentrations influence new particle formation and consequently the global aerosol an cloud condensation nuclei loads. We aimed to evaluate air ion concentrations and characteristics of new particle formation events (NPF) in the megacity Paris, France (Megapoli project). We measured air ion number size distributions (0.8–42 nm) and fine particle number ...

Aalto, P., Hameri, K., Paatero, P., Kulmala, M., Bellander, T., Berglind, N., Bouso, L., Castano-Vinyals, G., Sunyer, J., Cattani, G., Marconi, A., Cyrys, J., von Klot, S., Peters, A., Zetzsche, K., Lanki, T., Pekkanen, J., Nyberg, F., Sjovall, B., and Forastiere, F.: Aerosol particle number concentration measurements in five European cities using TSI-3022 condensation particle counter over a three-year period during health effects pollution on susceptible subpopulations...

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