Seasonal dynamics of airborne biomolecules influence the size distribution of Arctic aerosols DOI Creative Commons
Eunho Jang, Ki‐Tae Park, Young Jun Yoon

et al.

Environmental Science and Ecotechnology, Journal Year: 2024, Volume and Issue: 22, P. 100458 - 100458

Published: July 18, 2024

Organic matter is crucial in aerosol–climate interactions, yet the physicochemical properties and origins of organic aerosols remain poorly understood. Here we show seasonal characteristics submicron Arctic Svalbard during spring summer, emphasizing their connection to transport patterns particle size distribution. Microbial-derived (MOM) terrestrial-derived (TOM) accounted for over 90% total mass these seasons, comprising carbohydrate/protein-like lignin/tannin-like compounds, respectively. In spring, showed high TOM low MOM intensities due biomass-burning influx central Arctic. contrast, summer exhibited elevated intensity, attributed shift predominant atmospheric from biologically active Greenland Sea. were associated with Aitken mode particles (<100 nm diameter) accumulation (>100 diameter), This association linked molecular biomolecules, impacting number concentrations corresponding aerosol classes. These findings highlight importance considering source-dependent distributions assessing changing

Language: Английский

Impact of Biomass Burning on Arctic Aerosol Composition DOI Creative Commons
Yvette Gramlich, Karolina Siegel, Sophie L. Haslett

et al.

ACS Earth and Space Chemistry, Journal Year: 2024, Volume and Issue: 8(5), P. 920 - 936

Published: April 4, 2024

Emissions from biomass burning (BB) occurring at midlatitudes can reach the Arctic, where they influence remote aerosol population. By using measurements of levoglucosan and black carbon, we identify seven BB events reaching Svalbard in 2020. We find that most are significantly different to rest year (nonevents) for chemical physical properties. Aerosol mass number concentrations enhanced by up 1 order magnitude during events. During events, submicrometer bulk composition changes an organic- sulfate-dominated regime a clearly organic-dominated regime. This results lower hygroscopicity parameter κ (0.4 ± 0.2) compared nonevents (0.5 0.2), calculated nonrefractory composition. The organic fraction showed no significant difference O:C ratios (0.9 0.3) 0.6). Accumulation mode particles were present all while summer additional Aitken was observed, indicating mixture advected air with locally produced particles. tracers (vanillic, homovanillic, hydroxybenzoic acid, nitrophenol, methylnitrophenol, nitrocatechol) higher when back trajectories passed over active fire regions Eastern Europe, agricultural wildfires as sources. Our suggest impact on Arctic depends season which occur, Europe have potential disturb background conditions most.

Language: Английский

Citations

6
Aerosol hygroscopicity influenced by seasonal chemical composition variations in the Arctic region DOI Creative Commons

Hyojin Kang,

Chang Hoon Jung,

Bang‐Yong Lee

et al.

Journal of Aerosol Science, Journal Year: 2025, Volume and Issue: unknown, P. 106551 - 106551

Published: Feb. 1, 2025

Language: Английский

Citations

0
Adequate Consideration of Aerosol Hygroscopicity is Crucial for Evaluating Its Respiratory Deposition and Related Health Impacts DOI
Juan Hong,

Jiamin Ma,

Nan Ma

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Aerosol hygroscopicity is vitally important in governing the characteristics of particle deposition within human respiratory tract (HRT) as it determines size humid environments. Based on direct measurements conducted across diverse environments, this study quantified impact aerosol utilizing International Commission Radiological Protection (ICRP) model. Our results demonstrate that hygroscopic growth particles HRT notably reduces total fraction (TDF) for number by much 12%, whereas significantly increases TDF mass up to 49% submicrometer from various regional backgrounds. For near-source aerosols, mild variations were observed, with changes less than 10% and 17% mass, owing their low hygroscopicity. These findings imply importance appropriately considering assessing deposition. Furthermore, our reveal many highly toxic neglecting has a negligible estimates. However, toxicity under decreases, influence becomes more pronounced, largely increasing which highlights significance both cytotoxicity health risks.

Language: Английский

Citations

0
Aerosol and dynamical contributions to cloud droplet formation in Arctic low-level clouds DOI Creative Commons
Ghislain Motos,

Gabriel Freitas,

Paraskevi Georgakaki

et al.

Atmospheric chemistry and physics, Journal Year: 2023, Volume and Issue: 23(21), P. 13941 - 13956

Published: Nov. 8, 2023

Abstract. The Arctic is one of the most rapidly warming regions globe. Low-level clouds and fog modify energy transfer from to space play a key role in observed strong surface warming, phenomenon commonly termed “Arctic amplification”. response low-level changing aerosol characteristics throughout year therefore an important driver change that currently lacks sufficient constraints. As such, during NASCENT campaign (Ny-Ålesund AeroSol Cloud ExperimeNT) extending over full October 2019 2020, microphysical properties aerosols were studied at Zeppelin station (475 m a.s.l.), Ny-Ålesund, Svalbard, Norway. Particle number size distributions obtained differential mobility particle sizers as well chemical composition derived filter samples speciation monitor analyzed together with meteorological data, particular vertical wind velocity. results used input state-of-the-art cloud droplet formation parameterization investigate sizes can activate droplets, levels supersaturation develop, susceptibility We evaluate numbers calculated through closure in-cloud situ measurements taken nine flights 4 d. A remarkable finding that, for sampled situ, successful mixed-phase conditions regardless glaciation fraction. This suggests ice production ice–ice collisions or shattering may have explained high fraction, opposed rime splintering would significantly reduced below predicted by warm-cloud activation theory. also show pristine-like fall led formed aerosol-limited regime, (generally around 1 %, although highly variable) particles smaller than 20 nm diameter. Clouds same regime late spring summer, but diameters much larger due lower supersaturations (ca. 0.5 %) develop because higher concentrations velocities. contribution new was strongly limited, least until these newly started growing. However, forming haze period (winter early spring) be limited updraft velocity, rarely, dropping 0.1 % generally activating (20 200 nm), including pollution transported long range. relationship between velocity limiting agrees previous observations various types worldwide, which supports universality this relationship.

Language: Английский

Citations

7
Morphology and hygroscopicity of nanoplastics in sea spray DOI
Sarah S. Petters, Eva R. Kjærgaard, Freja Hasager

et al.

Physical Chemistry Chemical Physics, Journal Year: 2023, Volume and Issue: 25(47), P. 32430 - 32442

Published: Jan. 1, 2023

The role of airborne nanoparticles in atmospheric chemistry and public health is largely controlled by particle size, morphology, surface composition, coating. Aerosol mass spectrometry provides real-time chemical characterization submicron particles, but analysis nanoplastics complex aerosol mixtures such as sea spray severely limited challenges associated with separation ionization the matrix. Here we characterize internal external mixing state synthetic aerosols spiked 150 nm nanoplastics. Aerosols generated from pneumatic atomization a tank are compared. A humidified tandem differential mobility analyzer used size hygroscopicity filter, resulting spray, an inline high-resolution time-of-flight spectrometer to composition efficiency. technique amplified detection limit salt coating was found on thickness increasing exponentially bulk solution salinity, which varied 0 40 g kg-1. Relative efficiencies polystyrene chloride were 0.19 0.36, respectively. growth-factor derived 1.4 at 75% relative humidity. These results underscore importance separating for detailed online coatings function water composition. nanoplastic salts can profoundly impact their chemistry, uptake, distributions atmosphere.

Language: Английский

Citations

6
Characterization of size-resolved aerosol hygroscopicity and liquid water content in Nanjing of the Yangtze River Delta DOI
Youling Jiang, Yan Ma, Jun Zheng

et al.

Journal of Environmental Sciences, Journal Year: 2024, Volume and Issue: 151, P. 26 - 41

Published: March 28, 2024

Language: Английский

Citations

1
Aerosol size distribution properties associated with cold-air outbreaks in the Norwegian Arctic DOI Creative Commons
A. Williams, Jeramy L. Dedrick, Lynn M. Russell

et al.

Atmospheric chemistry and physics, Journal Year: 2024, Volume and Issue: 24(20), P. 11791 - 11805

Published: Oct. 23, 2024

Abstract. The aerosol particles serving as cloud condensation and ice nuclei contribute to key processes associated with cold-air outbreak (CAO) events but are poorly constrained in climate models due sparse observations. Here we retrieve number size distribution modes from measurements at Andenes, Norway, during the Cold-Air Outbreaks Marine Boundary Layer Experiment (COMBLE) Zeppelin Observatory, approximately 1000 km upwind Andenes Svalbard. During CAO sea-spray-mode concentration is correlated strong over-ocean winds a mean of 8±4 cm−3 that 71 % higher than non-CAO conditions. Additionally, Hoppel minimum diameter 6 nm smaller conditions, though estimated supersaturation lower, likely activated in-cloud 109±61 no statistically significant difference 99±66 cm−3. For trajectories between Observatory upwind-to-downwind change largest for accumulation mode decrease 93±95 cm−3, attributable primarily precipitation scavenging. These characteristic properties distributions provide guidance evaluating aerosol–cloud interaction models.

Language: Английский

Citations

1
Seasonal dynamics of airborne biomolecules influence the size distribution of Arctic aerosols DOI Creative Commons
Eunho Jang, Ki‐Tae Park, Young Jun Yoon

et al.

Environmental Science and Ecotechnology, Journal Year: 2024, Volume and Issue: 22, P. 100458 - 100458

Published: July 18, 2024

Organic matter is crucial in aerosol–climate interactions, yet the physicochemical properties and origins of organic aerosols remain poorly understood. Here we show seasonal characteristics submicron Arctic Svalbard during spring summer, emphasizing their connection to transport patterns particle size distribution. Microbial-derived (MOM) terrestrial-derived (TOM) accounted for over 90% total mass these seasons, comprising carbohydrate/protein-like lignin/tannin-like compounds, respectively. In spring, showed high TOM low MOM intensities due biomass-burning influx central Arctic. contrast, summer exhibited elevated intensity, attributed shift predominant atmospheric from biologically active Greenland Sea. were associated with Aitken mode particles (<100 nm diameter) accumulation (>100 diameter), This association linked molecular biomolecules, impacting number concentrations corresponding aerosol classes. These findings highlight importance considering source-dependent distributions assessing changing

Language: Английский

Citations

0