Results 11 to 20 of about 732,060 (403)

Source apportionment of black carbon and combustion-related CO₂ for the determination of source-specific emission factors [PDF]

Atmospheric Measurement Techniques, 2023
Black carbon (BC) aerosol typically has two major sources in the urban environment: traffic and domestic biomass burning, which has a significant contribution to urban air pollution during the heating season. Traffic emissions have been widely studied by
B. Alfoldy, A. Gregorič, A. Gregorič, M. Ivančič, I. Ježek, M. Rigler   +5 more
doaj   +1 more source

Regularized inversion of aerosol hygroscopic growth factor probability density function: application to humidity-controlled fast integrated mobility spectrometer measurements [PDF]

Atmospheric Measurement Techniques, 2022
The new Aerosol hygroscopic growth plays an important role in atmospheric particle chemistry and the effects of aerosol on radiation and hence climate. The hygroscopic growth is often characterized by a growth factor probability density function (GF-PDF),
J. Zhang, Y. Wang, Y. Wang, S. Spielman, S. Hering, J. Wang   +5 more
doaj   +1 more source

Highly Time-Resolved Apportionment of Carbonaceous Aerosols from Wildfire Using the TC–BC Method: Camp Fire 2018 Case Study

Toxics, 2023
The Camp Fire was one of California’s deadliest and most destructive wildfires, and its widespread smoke threatened human health over a large area in Northern California in November 2018.
Matic Ivančič, Martin Rigler, Bálint Alföldy, Gašper Lavrič, Irena Ježek Brecelj, Asta Gregorič   +5 more
doaj   +1 more source

Rapid measurement of RH-dependent aerosol hygroscopic growth using a humidity-controlled fast integrated mobility spectrometer (HFIMS) [PDF]

Atmospheric Measurement Techniques, 2021
The ability of aerosol particles to uptake water (hygroscopic growth) is an important determinant of aerosol optical properties and radiative effects.
J. Zhang, S. Spielman, Y. Wang, Y. Wang, G. Zheng, X. Gong, S. Hering, J. Wang   +7 more
doaj   +1 more source

Molecular rearrangement of bicyclic peroxy radicals is a key route to aerosol from aromatics

Nature Communications, 2023
The oxidation of aromatics contributes significantly to the formation of atmospheric aerosol. Using toluene as an example, we demonstrate the existence of a molecular rearrangement channel in the oxidation mechanism.
Siddharth Iyer, Avinash Kumar, Anni Savolainen, Shawon Barua, Christopher Daub, Lukas Pichelstorfer, Pontus Roldin, Olga Garmash, Prasenjit Seal, Theo Kurtén, Matti Rissanen   +10 more
doaj   +1 more source

An experimental study on lung deposition of inhaled 2 μm particles in relation to lung characteristics and deposition models

Particle and Fibre Toxicology, 2023
Background The understanding of inhaled particle respiratory tract deposition is a key link to understand the health effects of particles or the efficiency for medical drug delivery via the lung.
Jenny Rissler, Madeleine Peterson Sjögren, Julia Linell, Amalia Larsson Hurtig, Per Wollmer, Jakob Löndahl   +5 more
doaj   +1 more source

Soot Particle Agglomeration Inlet (SPAI) for Enabling Online Chemical Composition Measurement of Nanoparticles with the Aerosol Mass Spectrometer

Aerosol and Air Quality Research, 2021
Nanoparticles are a topic of interest because of their effects on human health and the climate, but the current options for evaluating their chemical composition—one of the key properties that determine the mechanisms of these effects—remain very limited
Sampsa Martikainen, Sanna Saarikoski, Paxton Juuti, Hilkka Timonen, Jorma Keskinen, Panu Karjalainen   +5 more
doaj   +1 more source

Constraining uncertainty in aerosol direct forcing [PDF]

, 2020
The uncertainty in present-day anthropogenic forcing is dominated by uncertainty in the strength of the contribution from aerosol. Much of the uncertainty in the direct aerosol forcing can be attributed to uncertainty in the anthropogenic fraction of ...
Bellouin, N., Carslaw, K. S., Deaconu, L., Johnson, J. S., Pringle, K. J., Regayre, L. A., Schutgens, N., Smith, C. J., Stier, P., Watson-Parris, D., Yoshioka, M.   +10 more
core   +4 more sources

Aerosol and Surface Stability of SARS-CoV-2 as Compared with SARS-CoV-1

New England Journal of Medicine, 2020
Aerosol and Surface Stability of SARS-CoV-2 In this research letter, investigators report on the stability of SARS-CoV-2 and SARS-CoV-1 under experimental conditions.
N. van Doremalen, T. Bushmaker, Dylan H. Morris, M. Holbrook, Amandine Gamble, Brandi N. Williamson, A. Tamin, J. Harcourt, N. Thornburg, S. Gerber, J. Lloyd-Smith, E. de Wit, V. Munster   +12 more
semanticscholar   +1 more source

The Impact of Lockdown on eBC Mass Concentration over a Semi-arid Region in Southern India: Ground Observation and Model Simulations

Aerosol and Air Quality Research, 2021
In the present study, we focused on the impact of lockdown on black carbon (eBC) mass concentrations and their associated radiative implications from 01st March to 30th June 2020, over a semi-arid station, i.e., in the district of Anantapur in Southern ...
Surya Nagi Reddy Palle, Chakradhar Rao Tandule, Raja Obul Reddy Kalluri, Balakrishnaiah Gugamsetty, Rama Gopal Kotalo, Lokeswara Reddy Thotli, Bhavyasree Akkiraju, Siva Sankara Reddy Lingala   +7 more
doaj   +1 more source