Results 31 to 40 of about 272,738 (312)

The Reno Aerosol Optics Study: An evaluation of aerosol absorption measurement methods [PDF]

, 2005
The Reno Aerosol Optics Study (RAOS) was designed and conducted to compare the performance of many existing and new instruments for the in situ measurement of aerosol optical properties with a focus on the determination of aerosol light absorption. For
Virkkula, Aki, Sheridan, Patrick J., Ogren, John A., Andrews, Elisabeth, Atkinson, Dean B., Moosmüller, Hans, Arnott, W. Patrick, Strawa, Anthony W., Covert, David S., Varma, Ravi, Petzold, Andreas, Schmid, Beat   +11 more
core   +1 more source

Studies of Chamber Organic Aerosol using an Aerodyne High-Resolution Time-of-Flight Aerosol Mass Spectrometer [PDF]

, 2011
Secondary organic aerosol (SOA) contributes a substantial fraction to total ambient particulate mass. SOA is a complex mixture of different organic species formed via many gas- and particle-phase reaction pathways. The Aerodyne aerosol mass spectrometer (
Chhabra, Puneet Singh
core   +1 more source

Studies of Aerosol Composition and Hygroscopicity [PDF]

, 2011
Atmospheric aerosols have significant impacts on human health, regional visibility, and the radiative energy balance of Earth, but there remain many uncertainties about their sources and evolution in the atmosphere, as well as the details and magnitude ...
Hersey, Scott Patrick
core   +1 more source

Update on the Science and Technology of Diesel Particulate Filters

KONA Powder and Particle Journal, 2014
As diesel emission regulations become more stringent, diesel particulate filters (DPFs) have become possibly the most important and complex diesel emission control device. This paper provides an update on the science
Athanasios G. Konstandopoulos, Eleni Papaioannou   +1 more
doaj   +1 more source

Airborne high spectral resolution lidar observation of pollution aerosol during EUCAARI-LONGREX [PDF]

, 2013
Airborne high spectral resolution lidar observations over Europe during the EUCAARI-LONGREX field experiment in May 2008 are analysed with respect to the optical properties of continental pollution aerosol.
A. Fix, Minikin, Andreas, M. Esselborn, Groß, Silke, Abicht, Florian, Fix, Andreas, A. Minikin, Fix, A., Abicht, F., Esselborn, Michael, S. Groß, F. Abicht, Wirth, M., Minikin, A., Esselborn, M., Groß, S., M. Wirth, Wirth, Martin   +17 more
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Aerosol modeling over Europe: 2. Interannual variability of aerosol shortwave direct radiative forcing [PDF]

, 2007
Aerosol distribution over Europe and its direct radiative forcing have been simulated with a regional atmosphere-chemistry model and an off-line radiation transfer model. Primary and secondary organic and inorganic aerosols have been considered.
Hungershöfer, K., Marmer, Elina, Langmann, B., Hungershöfer, Katja, Langmann, Bärbel, Trautmann, Thomas, Trautmann, T., Marmer, E.   +7 more
core   +1 more source

Size-resolved condensation sink as an approach to understand pathways how gaseous emissions affect health and climate [PDF]

Atmospheric Chemistry and Physics
Vapour condensation onto existing aerosol particles is important regarding aerosol health and climate effects. Existing particles can act as carriers for toxic vapours into the human respiratory tract.
T. Lepistö, H. Timonen, H. Timonen, T. Rönkkö, M. Dal Maso   +4 more
doaj   +1 more source

Dual-wavelength light-scattering technique for selective detection of volcanic ash particles in the presence of water droplets [PDF]

Atmospheric Measurement Techniques, 2015
A new method is presented in this paper which analyses the scattered light of individual aerosol particles simultaneously at two different wavelengths in order to retrieve information on the particle type.
Z. Jurányi, H. Burtscher, M. Loepfe, M. Nenkov, E. Weingartner   +4 more
doaj   +1 more source

Relating hygroscopicity and composition of organic aerosol particulate matter [PDF]

, 2010
A hygroscopicity tandem differential mobility analyzer (HTDMA) was used to measure the water uptake (hygroscopicity) of secondary organic aerosol (SOA) formed during the chemical and photochemical oxidation of several organic precursors in a smog chamber.
D. R. Worsnop, Tomlinson, J., Baltensperger, U., Collins, D. R., Aiken, A. C., A. Metzger, Barmpadimos, I., De Carlo, P. F., J. Tomlinson, Baltensperger, Urs, Prevot, A. S H, Weingartner, E., P. F. DeCarlo, Dommen, J., M. R. Canagaratna, Jimenez, Jose Luis, Tomlinson, Jason M., DeCarlo, Peter F., Alfarra, M. R., Canagaratna, Manjula R., J. Dommen, Worsnop, D. R., Prevot, André Stephan Henry, Collins, Donald R., Aiken, Allison C., Jimenez, J. L., Barmpadimos, Iakovos, Metzger, A., J. L. Jimenez, D. R. Collins, E. Weingartner, Weingartner, Ernest, A. S. H. Prevot, Dommen, Josef, Gysel, M., Alfarra, M. Rami, Worsnop, Douglas R., U. Baltensperger, A. C. Aiken, Prevot, A. S. H., Tritscher, T., Gysel, Martin, Canagaratna, M. R., J. Duplissy, DeCarlo, P. F., Duplissy, J., Duplissy, Jonathan, I. Barmpadimos, Metzger, Axel, Tritscher, Torsten, M. R. Alfarra, T. Tritscher, M. Gysel   +52 more
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Use of electrochemical sensors for measurement of air pollution: correcting interference response and validating measurements [PDF]

Atmospheric Measurement Techniques, 2017
The environments in which we live, work, and play are subject to enormous variability in air pollutant concentrations. To adequately characterize air quality (AQ), measurements must be fast (real time), scalable, and reliable (with known accuracy ...
E. S. Cross, L. R. Williams, D. K. Lewis, D. K. Lewis, G. R. Magoon, T. B. Onasch, M. L. Kaminsky, D. R. Worsnop, J. T. Jayne   +8 more
doaj   +1 more source