Aging of atmospheric brown carbon aerosol

RF Hems, EG Schnitzler, C Liu-Kang… - ACS Earth and Space …, 2021 - ACS Publications
Emitted by numerous primary sources and formed by secondary sources, atmospheric
brown carbon (BrC) aerosol is chemically complex. As BrC aerosol ages in the atmosphere …

New insights into the brown carbon chromophores and formation pathways for aqueous reactions of α-dicarbonyls with amines and ammonium

L Yang, RJ Huang, J Shen, T Wang… - Environmental …, 2023 - ACS Publications
Aqueous-phase reactions of α-dicarbonyls with ammonium or amines have been identified
as important sources of secondary brown carbon (BrC). However, the identities of most …

Molecular analysis of secondary brown carbon produced from the photooxidation of naphthalene

K Siemens, A Morales, Q He, C Li… - … science & technology, 2022 - ACS Publications
We investigate the chemical composition of organic light-absorbing components, also
known as brown carbon (BrC) chromophores, formed in a proxy of anthropogenic secondary …

Advances in the research on brown carbon aerosols: Its concentrations, radiative forcing, and effects on climate

S Li, H Zhang, Z Wang, Y Chen - Aerosol and Air Quality Research, 2023 - Springer
Brown carbon (BrC) are important light-absorbing carbonaceous aerosols in the
atmosphere, and it is of great significance to study the climate effects of BrC for regional or …

Brown carbon from biomass burning imposes strong circum-Arctic warming

S Yue, J Zhu, S Chen, Q **e, W Li, L Li, H Ren, S Su… - One Earth, 2022 - cell.com
Rapid warming in the Arctic has a huge impact on the global environment. Atmospheric
brown carbon (BrC) is one of the least understood and uncertain warming agents due to a …

Nitrogen-containing compounds enhance light absorption of aromatic-derived brown carbon

Z Yang, NT Tsona, C George, L Du - Environmental Science & …, 2022 - ACS Publications
The formation of secondary brown carbon (BrC) is chemically complex, leading to an
unclear relationship between its molecular composition and optical properties. Here, we …

Oxidation of catechols at the air–water interface by nitrate radicals

MS Rana, MI Guzman - Environmental Science & Technology, 2022 - ACS Publications
Abundant substituted catechols are emitted to, and created in, the atmosphere during
wildfires and anthropogenic combustion and agro-industrial processes. While ozone (O3) …

Characteristics and evolution of brown carbon in western United States wildfires

L Zeng, J Dibb, E Scheuer, JM Katich… - Atmospheric …, 2022 - acp.copernicus.org
Brown carbon (BrC) associated with aerosol particles in western United States wildfires was
measured between July and August 2019 aboard the NASA DC-8 research aircraft during …

Connecting the light absorption of atmospheric organic aerosols with oxidation state and polarity

X Jiang, D Liu, Q Li, P Tian, Y Wu, S Li… - Environmental …, 2022 - ACS Publications
The light-absorbing organic aerosol (OA) constitutes an important fraction of absorbing
components, counteracting major cooling effect of aerosols to climate. The mechanisms in …

Predictions of the Optical Properties of Brown Carbon Aerosol by Machine Learning with Typical Chromophores

Y Wang, RJ Huang, H Zhong, T Wang… - Environmental …, 2024 - ACS Publications
The linkages between BrC optical properties and chemical composition remain
inadequately understood, with quantified chromophores explaining less than 25% of …