Search Results - "Nenes, Athanasios"

High aerosol acidity despite declining atmospheric sulfate concentrations over the past 15 years by Weber, Rodney J., Guo, Hongyu, Russell, Armistead G., Nenes, Athanasios

“…Atmospheric sulfate levels are thought to determine the pH of small aerosol particles. Thermodynamic analysis of field aerosol data reveals that fine particles…”
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Highly Acidic Ambient Particles, Soluble Metals, and Oxidative Potential: A Link between Sulfate and Aerosol Toxicity by Fang, Ting, Guo, Hongyu, Zeng, Linghan, Verma, Vishal, Nenes, Athanasios, Weber, Rodney J

“…Soluble transition metals in particulate matter (PM) can generate reactive oxygen species in vivo by redox cycling, leading to oxidative stress and adverse…”
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Phytoplankton and Cloudiness in the Southern Ocean by Meskhidze, Nicholas, Nenes, Athanasios

“…The effect of ocean biological productivity on marine clouds is explored over a large phytoplankton bloom in the Southern Ocean with the use of remotely sensed…”
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network-based constraint to evaluate climate sensitivity by Ricard, Lucile, Falasca, Fabrizio, Runge, Jakob, Nenes, Athanasios

“…The 2015 Paris agreement was established to limit Greenhouse gas (GHG) global warming below 1.5°C above preindustrial era values. Knowledge of climate…”
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Changes in Light Absorptivity of Molecular Weight Separated Brown Carbon Due to Photolytic Aging by Wong, Jenny P. S, Nenes, Athanasios, Weber, Rodney J

“…Brown carbon (BrC) consists of those organic compounds in atmospheric aerosols that absorb solar radiation and may play an important role in planetary…”
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Aerosol pH and liquid water content determine when particulate matter is sensitive to ammonia and nitrate availability by Nenes, Athanasios, Pandis, Spyros N, Weber, Rodney J, Russell, Armistead

“…Nitrogen oxides (NOx) and ammonia (NH3) from anthropogenic and biogenic emissions are central contributors to particulate matter (PM) concentrations worldwide…”
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RaFSIP: Parameterizing Ice Multiplication in Models Using a Machine Learning Approach by Georgakaki, Paraskevi, Nenes, Athanasios

“…Accurately representing mixed‐phase clouds (MPCs) in global climate models (GCMs) is critical for capturing climate sensitivity and Arctic amplification…”
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Rapid dark aging of biomass burning as an overlooked source of oxidized organic aerosol by Kodros, John K., Papanastasiou, Dimitrios K., Paglione, Marco, Masiol, Mauro, Squizzato, Stefania, Florou, Kalliopi, Skyllakou, Ksakousti, Kaltsonoudis, Christos, Nenes, Athanasios, Pandis, Spyros N.

“…Oxidized organic aerosol (OOA) is a major component of ambient particulate matter, substantially impacting climate, human health, and ecosystems. OOA is…”
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Effectiveness of ammonia reduction on control of fine particle nitrate by Guo, Hongyu, Otjes, Rene, Schlag, Patrick, Kiendler-Scharr, Astrid, Nenes, Athanasios, Weber, Rodney J

“…In some regions, reducing aerosol ammonium nitrate (NH4NO3) concentrations may substantially improve air quality. This can be accomplished by reductions in…”
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The influence of chemical composition, aerosol acidity, and metal dissolution on the oxidative potential of fine particulate matter and redox potential of the lung lining fluid by Shahpoury, Pourya, Zhang, Zheng Wei, Arangio, Andrea, Celo, Valbona, Dabek-Zlotorzynska, Ewa, Harner, Tom, Nenes, Athanasios

“…•Oxidative potential (OP) of PM2.5 from Canadian cities was studied using a new acellular chemical assay.•Redox potential of simulated lung fluid was highly…”
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pH of Aerosols in a Polluted Atmosphere: Source Contributions to Highly Acidic Aerosol by Shi, Guoliang, Xu, Jiao, Peng, Xing, Xiao, Zhimei, Chen, Kui, Tian, Yingze, Guan, Xinbei, Feng, Yinchang, Yu, Haofei, Nenes, Athanasios, Russell, Armistead G

“…Acidity (pH) plays a key role in the physical and chemical behavior of PM2.5. However, understanding of how specific PM sources impact aerosol pH is rarely…”
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The underappreciated role of nonvolatile cations in aerosol ammonium-sulfate molar ratios by Guo, Hongyu, Nenes, Athanasios, Weber, Rodney J

“…Overprediction of fine-particle ammonium-sulfate molar ratios (R) by thermodynamic models is suggested as evidence for interactions with organic constituents…”
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Developing a UV climatology for public health purposes using satellite data by Vuilleumier, Laurent, Harris, Todd, Nenes, Athanasios, Backes, Claudine, Vernez, David

“…•A satellite-based UV climatology has been developed for Switzerland over 15 years.•It spatial and temporal resolution are of 1.5–2 km and one hour,…”
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Improving our fundamental understanding of the role of aerosol–cloud interactions in the climate system by Seinfeld, John H., Bretherton, Christopher, Carslaw, Kenneth S., Coe, Hugh, DeMott, Paul J., Dunlea, Edward J., Feingold, Graham, Ghan, Steven, Guenther, Alex B., Kahn, Ralph, Kraucunas, Ian, Kreidenweis, Sonia M., Molina, Mario J., Nenes, Athanasios, Penner, Joyce E., Prather, Kimberly A., Ramanathan, V., Ramaswamy, Venkatachalam, Rasch, Philip J., Ravishankara, A. R., Rosenfeld, Daniel, Stephens, Graeme, Wood, Robert

“…The effect of an increase in atmospheric aerosol concentrations on the distribution and radiative properties of Earth’s clouds is the most uncertain component…”
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Top-of-atmosphere radiative forcing affected by brown carbon in the upper troposphere by Zhang, Yuzhong, Forrister, Haviland, Liu, Jiumeng, Dibb, Jack, Anderson, Bruce, Schwarz, Joshua P., Perring, Anne E., Jimenez, Jose L., Campuzano-Jost, Pedro, Wang, Yuhang, Nenes, Athanasios, Weber, Rodney J.

“…Carbonaceous aerosols affect the global radiative balance by absorbing and scattering radiation, which leads to warming or cooling of the atmosphere,…”
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Effects of Atmospheric Processing on the Oxidative Potential of Biomass Burning Organic Aerosols by Wong, Jenny P.S, Tsagkaraki, Maria, Tsiodra, Irini, Mihalopoulos, Nikolaos, Violaki, Kalliopi, Kanakidou, Maria, Sciare, Jean, Nenes, Athanasios, Weber, Rodney J

“…Oxidative potential (OP), which is the ability of certain components in atmospheric particles to generate reactive oxidative species (ROS) and deplete…”
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Fine particle pH and the partitioning of nitric acid during winter in the northeastern United States by Guo, Hongyu, Sullivan, Amy P., Campuzano‐Jost, Pedro, Schroder, Jason C., Lopez‐Hilfiker, Felipe D., Dibb, Jack E., Jimenez, Jose L., Thornton, Joel A., Brown, Steven S., Nenes, Athanasios, Weber, Rodney J.

“…Particle pH is a critical but poorly constrained quantity that affects many aerosol processes and properties, including aerosol composition, concentrations,…”
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Evolution of brown carbon in wildfire plumes by Forrister, Haviland, Liu, Jiumeng, Scheuer, Eric, Dibb, Jack, Ziemba, Luke, Thornhill, Kenneth L., Anderson, Bruce, Diskin, Glenn, Perring, Anne E., Schwarz, Joshua P., Campuzano-Jost, Pedro, Day, Douglas A., Palm, Brett B., Jimenez, Jose L., Nenes, Athanasios, Weber, Rodney J.

“…Particulate brown carbon (BrC) in the atmosphere absorbs light at subvisible wavelengths and has poorly constrained but potentially large climate forcing…”
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ISORROPIA-Lite: A Comprehensive Atmospheric Aerosol Thermodynamics Module for Earth System Models by Kakavas, Stylianos, Pandis, Spyros N., Nenes, Athanasios

“…Aerosol simulations especially for Earth System Models require a thermodynamics module with a good compromise between rigor and computational efficiency. We…”
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Acidity and the multiphase chemistry of atmospheric aqueous particles and clouds by Tilgner, Andreas, Schaefer, Thomas, Alexander, Becky, Barth, Mary, Collett, Jr, Jeffrey L, Fahey, Kathleen M, Nenes, Athanasios, Pye, Havala O T, Herrmann, Hartmut, McNeill, V Faye

“…The acidity of aqueous atmospheric solutions is a key parameter driving both the partitioning of semi-volatile acidic and basic trace gases and their…”
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