Search Results - "Allan, James D"

Light Absorption Enhancement of Black Carbon Aerosol Constrained by Particle Morphology by Wu, Yu, Cheng, Tianhai, Liu, Dantong, Allan, James D, Zheng, Lijuan, Chen, Hao

“…The radiative forcing of black carbon aerosol (BC) is one of the largest sources of uncertainty in climate change assessments. Contrasting results of BC…”
Get full text

Chemistry and the Linkages between Air Quality and Climate Change by von Schneidemesser, Erika, Monks, Paul S, Allan, James D, Bruhwiler, Lori, Forster, Piers, Fowler, David, Lauer, Axel, Morgan, William T, Paasonen, Pauli, Righi, Mattia, Sindelarova, Katerina, Sutton, Mark A

“…The authors examines the relationship between climate change and air quality. Topics discussed include gaseous pollutants and ozone and meteorology…”
Get full text

Black-carbon absorption enhancement in the atmosphere determined by particle mixing state by Liu, Dantong, Whitehead, James, Alfarra, M. Rami, Reyes-Villegas, Ernesto, Spracklen, Dominick V., Reddington, Carly L., Kong, Shaofei, Williams, Paul I., Ting, Yu-Chieh, Haslett, Sophie, Taylor, Jonathan W., Flynn, Michael J., Morgan, William T., McFiggans, Gordon, Coe, Hugh, Allan, James D.

“…Atmospheric black carbon makes an important but poorly quantified contribution to the warming of the global atmosphere. Laboratory and modelling studies have…”
Get full text

Online Chemical Characterization of Food-Cooking Organic Aerosols: Implications for Source Apportionment by Reyes-Villegas, Ernesto, Bannan, Thomas, Le Breton, Michael, Mehra, Archit, Priestley, Michael, Percival, Carl, Coe, Hugh, Allan, James D

“…Food-cooking organic aerosols (COA) are one of the primary sources of submicron particulate matter in urban environments. However, there are still many…”
Get full text

Enhanced light absorption by mixed source black and brown carbon particles in UK winter by Liu, Shang, Aiken, Allison C., Gorkowski, Kyle, Dubey, Manvendra K., Cappa, Christopher D., Williams, Leah R., Herndon, Scott C., Massoli, Paola, Fortner, Edward C., Chhabra, Puneet S., Brooks, William A., Onasch, Timothy B., Jayne, John T., Worsnop, Douglas R., China, Swarup, Sharma, Noopur, Mazzoleni, Claudio, Xu, Lu, Ng, Nga L., Liu, Dantong, Allan, James D., Lee, James D., Fleming, Zoë L., Mohr, Claudia, Zotter, Peter, Szidat, Sönke, Prévôt, André S. H.

“…Black carbon (BC) and light-absorbing organic carbon (brown carbon, BrC) play key roles in warming the atmosphere, but the magnitude of their effects remains…”
Get full text

Contribution of Nitrated Phenols to Wood Burning Brown Carbon Light Absorption in Detling, United Kingdom during Winter Time by Mohr, Claudia, Lopez-Hilfiker, Felipe D., Zotter, Peter, Prévôt, André S. H., Xu, Lu, Ng, Nga L., Herndon, Scott C., Williams, Leah R., Franklin, Jonathan P., Zahniser, Mark S., Worsnop, Douglas R., Knighton, W. Berk, Aiken, Allison C., Gorkowski, Kyle J., Dubey, Manvendra K., Allan, James D., Thornton, Joel A.

“…We show for the first time quantitative online measurements of five nitrated phenol (NP) compounds in ambient air (nitrophenol C6H5NO3, methylnitrophenol…”
Get full text

Characterizing the Particle Composition and Cloud Condensation Nuclei from Shipping Emission in Western Europe by Yu, Chenjie, Pasternak, Dominika, Lee, James, Yang, Mingxi, Bell, Thomas, Bower, Keith, Wu, Huihui, Liu, Dantong, Reed, Chris, Bauguitte, Stéphane, Cliff, Sam, Trembath, Jamie, Coe, Hugh, Allan, James D

“…Commercial shipping is considered as an important source of air pollution and cloud condensation nuclei (CCN). To assess the climatic and environmental impacts…”
Get full text

Characterising mass-resolved mixing state of black carbon in Beijing using a morphology-independent measurement method by Yu, Chenjie, Liu, Dantong, Broda, Kurtis, Joshi, Rutambhara, Olfert, Jason, Sun, Yele, Fu, Pingqing, Coe, Hugh, Allan, James D

“…Refractory black carbon (rBC) in the atmosphere is known for its significant impacts on climate. The relationship between the microphysical and optical…”
Get full text

Mineralogy and mixing state of north African mineral dust by online single-particle mass spectrometry by Marsden, Nicholas A, Ullrich, Romy, Mohler, Ottmar, Eriksen Hammer, Stine, Kandler, Konrad, Cui, Zhiqiang, Williams, Paul I, Flynn, Michael J, Liu, Dantong, Allan, James D, Coe, Hugh

“…The mineralogy and mixing state of dust particles originating from the African continent influences climate and marine ecosystems in the North Atlantic due to…”
Get full text

Black carbon physical and optical properties across northern India during pre-monsoon and monsoon seasons by Brooks, James, Liu, Dantong, Allan, James D, Williams, Paul I, Haywood, Jim, Highwood, Ellie J, Kompalli, Sobhan K, Babu, S. Suresh, Satheesh, Sreedharan K, Turner, Andrew G, Coe, Hugh

“…Black carbon (BC) is known to have major impacts on both climate and human health and is therefore of global importance, particularly in regions close to large…”
Get full text

Characterizing the Aging of Biomass Burning Organic Aerosol by Use of Mixing Ratios: A Meta-analysis of Four Regions by Jolleys, Matthew D, Coe, Hugh, McFiggans, Gordon, Capes, Gerard, Allan, James D, Crosier, Jonathan, Williams, Paul I, Allen, Grant, Bower, Keith N, Jimenez, Jose L, Russell, Lynn M, Grutter, Michel, Baumgardner, Darrel

“…Characteristic organic aerosol (OA) emission ratios (ERs) and normalized excess mixing ratios (NEMRs) for biomass burning (BB) events have been calculated from…”
Get full text

Deconvolution and Quantification of Hydrocarbon-like and Oxygenated Organic Aerosols Based on Aerosol Mass Spectrometry by Zhang, Qi, Alfarra, M. Rami, Worsnop, Douglas R, Allan, James D, Coe, Hugh, Canagaratna, Manjula R, Jimenez, Jose L

“…A new technique has been developed to deconvolve and quantify the mass concentrations of hydrocarbon-like and oxygenated organic aerosols (HOA and OOA) using…”
Get full text

Evaluating biases in filter-based aerosol absorption measurements using photoacoustic spectroscopy by Davies, Nicholas W, Fox, Cathryn, Szpek, Kate, Cotterell, Michael I, Taylor, Jonathan W, Allan, James D, Williams, Paul I, Trembath, Jamie, Haywood, Jim M, Langridge, Justin M

“…Biases in absorption coefficients measured using a filter-based absorption photometer (Tricolor Absorption Photometer, or TAP) at wavelengths of 467, 528 and…”
Get full text

Highly controlled, reproducible measurements of aerosol emissions from combustion of a common African biofuel source by Haslett, Sophie L, Thomas, J. Chris, Morgan, William T, Hadden, Rory, Liu, Dantong, Allan, James D, Williams, Paul I, Keita, Sekou, Liousse, Cathy, Coe, Hugh

“…Particulate emissions from biomass burning can both alter the atmosphere's radiative balance and cause significant harm to human health. However, due to the…”
Get full text

Biogenic cloud nuclei in the central Amazon during the transition from wet to dry season by Whitehead, James D, Darbyshire, Eoghan, Brito, Joel, Barbosa, Henrique M. J, Crawford, Ian, Stern, Rafael, Gallagher, Martin W, Kaye, Paul H, Allan, James D, Coe, Hugh, Artaxo, Paulo, McFiggans, Gordon

“…The Amazon basin is a vast continental area in which atmospheric composition is relatively unaffected by anthropogenic aerosol particles. Understanding the…”
Get full text

Comment on "The effects of molecular weight and thermal decomposition on the sensitivity of a thermal desorption aerosol mass spectrometer" by Jimenez, Jose L., Canagaratna, Manjula R., Drewnick, Frank, Allan, James D., Alfarra, M. Rami, Middlebrook, Ann M., Slowik, Jay G., Zhang, Qi, Coe, Hugh, Jayne, John T., Worsnop, Douglas R.

“…Copyright © American Association for Aerosol Research…”
Get full text

Observed microphysical changes in Arctic mixed-phase clouds when transitioning from sea ice to open ocean by Young, Gillian, Jones, Hazel M, Choularton, Thomas W, Crosier, Jonathan, Bower, Keith N, Gallagher, Martin W, Davies, Rhiannon S, Renfrew, Ian A, Elvidge, Andrew D, Darbyshire, Eoghan, Marenco, Franco, Brown, Philip R. A, Ricketts, Hugo M. A, Connolly, Paul J, Lloyd, Gary, Williams, Paul I, Allan, James D, Taylor, Jonathan W, Liu, Dantong, Flynn, Michael J

“…In situ airborne observations of cloud microphysics, aerosol properties, and thermodynamic structure over the transition from sea ice to ocean are presented…”
Get full text

Characterization of urban and rural organic particulate in the Lower Fraser Valley using two Aerodyne Aerosol Mass Spectrometers by Alfarra, M. Rami, Coe, Hugh, Allan, James D., Bower, Keith N., Boudries, Hacene, Canagaratna, Manjula R., Jimenez, Jose L., Jayne, John T., Garforth, Arthur A., Li, Shao-Meng, Worsnop, Douglas R.

“…Two Aerodyne Aerosol Mass Spectrometers (AMS) were deployed at three sites representing urban, semi-rural and rural areas during the Pacific 2001 experiment in…”
Get full text

Droplet activation properties of organic aerosols observed at an urban site during CalNex-LA by Mei, Fan, Hayes, Patrick L., Ortega, Amber, Taylor, Jonathan W., Allan, James D., Gilman, Jessica, Kuster, William, de Gouw, Joost, Jimenez, Jose L., Wang, Jian

“…Size‐resolved cloud condensation nuclei (CCN) spectra and aerosol chemical composition were characterized at an urban supersite in Pasadena, California, from…”
Get full text

Chemical speciation of organic aerosol during the International Consortium for Atmospheric Research on Transport and Transformation 2004: Results from in situ measurements by Williams, Brent J., Goldstein, Allen H., Millet, Dylan B., Holzinger, Rupert, Kreisberg, Nathan M., Hering, Susanne V., White, Allen B., Worsnop, Douglas R., Allan, James D., Jimenez, Jose L.

“…We report the first ever hourly in situ measurements of speciated organic aerosol composition. Measurements were made during July and August 2004 at Chebogue…”
Get full text