Low Hygroscopicity of Newly Formed Particles on the North China Plain and Its Implications for Nanoparticle Growth DOI Creative Commons
Juan Hong,

Jiamin Ma,

Nan Ma

et al.

Geophysical Research Letters, Journal Year: 2024, Volume and Issue: 51(14)

Published: July 16, 2024

Abstract The growth of newly formed particles through new particle formation (NPF) contributes a significant fraction to the cloud condensation nuclei, yet driving mechanisms remain unclear, especially for polluted environments. To investigate potential species contributing nanoparticle in environments with anthropogenic influences, we measured hygroscopicity at 20–40 nm rural observational site North China Plain during winter 2018. Our results demonstrate that these were not very hygroscopic, mean parameter κ 0.13 ± 0.09. Clear differences inferred growing material responsible observed among different events, indicating even same region, compounds may be identical. This synergistically influenced by NPF precursors, oxidants and meteorological conditions, suggesting complex might co‐exist behind

Language: Английский

Does income inequality reshape the environmental Kuznets curve (EKC) hypothesis? A nonlinear panel data analysis DOI

Qiang Wang,

Ting Yang, Rongrong Li

et al.

Environmental Research, Journal Year: 2022, Volume and Issue: 216, P. 114575 - 114575

Published: Oct. 14, 2022

Language: Английский

Citations

287
Secondary Formation of Submicron and Supermicron Organic and Inorganic Aerosols in a Highly Polluted Urban Area DOI
Yan Zheng, Ruqian Miao, Qi Zhang

et al.

Journal of Geophysical Research Atmospheres, Journal Year: 2023, Volume and Issue: 128(4)

Published: Feb. 16, 2023

Abstract Different adverse health effects of submicron (PM 1 ) and fine particles 2.5 may be attributed to their chemical differences, requiring a better understanding size‐resolved composition. Herein, extensive online measurements were conducted across seasons in Beijing by two aerosol mass spectrometers, one which alternately sampled PM . Source apportionment organic (OA) indicated that traffic‐ cooking‐related OA together accounted for ∼20%−30% the , showing insignificant seasonal variations. Coal‐combustion biomass‐burning‐related had minor contributions. The secondary (SOA) factors 59%−73% distributions particulate components varied greatly seasons. Secondary formation played key role particle size growth during cold During severe hazes with high liquid water content (ALWC), supermicron fraction (MF 1−2.5 reached ∼40%−50% while those primary remained at ∼20%. Heterogeneous uptake, aqueous processing, dissolution likely all contributed enhanced concentration components, former perhaps more important. increase MF increasing ALWC spring was less than winter, possibly due shorter duration stagnant conditions limiting formation. Early autumn showed higher values changes as varied, plausibly explained intensive new hindering persistent growth. Our results highlight importance heterogeneous uptake processing distributing SOA mode polluted areas.

Language: Английский

Citations

22
Atmospheric nanoparticle growth DOI
Dominik Stolzenburg, Runlong Cai, Sara M. Blichner

et al.

Reviews of Modern Physics, Journal Year: 2023, Volume and Issue: 95(4)

Published: Nov. 9, 2023

Atmospheric nanoparticles can serve as nuclei for cloud droplets, thereby inducing significant but uncertain effects on the radiative forcing of climate system. This article focuses physicochemical processes that govern growth these particles from formation molecular clusters until reach sizes where they act condensation nuclei. The review describes latest developments in measurement and modeling connects domains to large-scale simulations such Earth system models. authors recommend closer coordination among laboratory studies, atmospheric measurements, understand importance

Language: Английский

Citations

22
Road Traffic Emissions Lead to Much Enhanced New Particle Formation through Increased Growth Rates DOI Creative Commons
James Brean, Alex Rowell, David C. S. Beddows

et al.

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(24), P. 10664 - 10674

Published: June 8, 2024

New particle formation (NPF) is a major source of atmospheric aerosol particles, including cloud condensation nuclei (CCN), by number globally. Previous research has highlighted that NPF less frequent but more intense at roadsides compared to urban background. Here, we closely examine both background and roadside sites in Central Europe. We show the concentration oxygenated organic molecules (OOMs) greater roadside, OOMs along with sulfuric acid onto new particles sufficient explain growth sites. identify hitherto unreported traffic-related OOM contributing 29% 16% total background, respectively. Critically, this undiscovered an essential component NPF. Without their contribution rates subsequent enhancements survival, >50 nm produced would be reduced factor 21 site. Reductions hydrocarbon emissions from road traffic may thereby reduce numbers CCN counts.

Language: Английский

Citations

7
Effects of volatile organic compounds and new particle formation on real-time hygroscopicity of PM2.5 particles in Seosan, Republic of Korea DOI

J.H. Kim,

Yoonkyeong Ha, Kyungil Cho

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 924, P. 171516 - 171516

Published: March 7, 2024

Language: Английский

Citations

5
Direct calibration using atmospheric particles and performance evaluation of Particle Size Magnifier (PSM) 2.0 for sub-10 nm particle measurements DOI Creative Commons
Yiliang Liu,

Arttu Yli-Kujala,

Fabian Schmidt-Ott

et al.

Atmospheric measurement techniques, Journal Year: 2025, Volume and Issue: 18(2), P. 431 - 442

Published: Jan. 27, 2025

Abstract. The Particle Size Magnifier is widely used for measuring nano-sized particles. Here we calibrated the newly developed version 2.0 (PSM 2.0). We 1–10 nm particles with different compositions, including metal particles, organic generated in laboratory, and atmospheric collected Helsinki Hyytiälä. A noticeable difference among calibration curves was observed. Atmospheric from Hyytiälä required higher diethylene glycol (DEG) supersaturation to be activated compared (standard particles) other types of This suggests that chemical composition differences introduce measurement uncertainties highlights importance situ calibration. size resolution PSM characterized using maximum observed at 2–3 nm. then operated ambient particle measurements parallel a Half Mini differential mobility sizer (DMPS). During new formation (NPF) events, comparable total concentrations were between DMPS based on Meanwhile, applying caused an overestimation 3–10 In terms distributions, similar patterns when summary, powerful instrument sub-10 can achieve more precise distribution proper

Language: Английский

Citations

0
Incomplete mass closure in atmospheric nanoparticle growth DOI Creative Commons
Dominik Stolzenburg, Nina Sarnela, Federico Bianchi

et al.

npj Climate and Atmospheric Science, Journal Year: 2025, Volume and Issue: 8(1)

Published: Feb. 26, 2025

Language: Английский

Citations

0
Fostering a Holistic Understanding of the Full Volatility Spectrum of Organic Compounds from Benzene Series Precursors through Mechanistic Modeling DOI
Dejia Yin, Bin Zhao, Shuxiao Wang

et al.

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(19), P. 8380 - 8392

Published: May 1, 2024

A comprehensive understanding of the full volatility spectrum organic oxidation products from benzene series precursors is important to quantify air quality and climate effects secondary aerosol (SOA) new particle formation (NPF). However, current models fail capture due absence reaction pathways. Here, we develop a novel unified model framework, integrated two-dimensional basis set (I2D-VBS), simulate by simultaneously representing first-generational oxidation, multigenerational aging, autoxidation, dimerization, nitrate formation, etc. The successfully reproduces O/C distributions oxygenated molecules (OOMs) as well concentrations SOA over wide-ranging experimental conditions. In typical urban environments, autoxidation are two main pathways for OOMs with similar contributions, but contributes more low-volatility products. NOx can reduce about two-thirds SOA, most extremely compared clean conditions, suppressing dimerization autoxidation. I2D-VBS facilitates holistic product which helps fill large gap in predictions NPF, growth, formation.

Language: Английский

Citations

3
Advances in analysis of atmospheric ultrafine particles and application in air quality, climate, and health research DOI
Ting Lei, Xiang Wang, Bin Zhao

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 949, P. 175045 - 175045

Published: July 26, 2024

Language: Английский

Citations

3
New Insights on the Formation of Nucleation Mode Particles in a Coastal City Based on a Machine Learning Approach DOI
Chen Yang, Hesong Dong, Yuping Chen

et al.

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 58(2), P. 1187 - 1198

Published: Dec. 20, 2023

Atmospheric particles have profound implications for the global climate and human health. Among them, ultrafine dominate in terms of number concentration exhibit enhanced toxic effects as a result their large total surface area. Therefore, understanding driving factors behind particle behavior is crucial. Machine learning (ML) provides promising approach handling complex relationships. In this study, three ML models were constructed on basis field observations to simulate nucleation mode (PNCN). All exhibited robust PNCN reproduction (R2 > 0.80), with random forest (RF) model excelling test data = 0.89). Multiple methods feature importance analysis revealed that ultraviolet (UV), H2SO4, low-volatility oxygenated organic molecules (LOOMs), temperature, O3 primary influencing PNCN. Bivariate partial dependency plots (PDPs) indicated during nighttime overcast conditions, presence H2SO4 LOOMs may play crucial role Additionally, integrating additional detailed information related emissions or meteorology would further enhance performance. This pilot study shows can be novel simulating atmospheric pollutants contributes better formation growth mechanisms particles.

Language: Английский

Citations

9