INTERREGIONAL TRANSPORT OF SMOKE AEROSOL AND ITS IMPACT ON AIR QUALITY OF LAKE BAIKAL ATMOSPHERE DOI

А.Л. Дементьева,

А.С. Заяханов,

Г.С. Жамсуева

и другие.

Опубликована: Окт. 30, 2024

В данной работе приведены результаты непрерывных измерений аэрозольной оптической толщи (АОТ) в летний период с 2019 по 2023 гг. атмосфере юго-восточного побережья оз. Байкал (ст. «Боярский») помощью наземных и спутниковых наблюдений их анализ. Максимальная замутненность атмосферы наблюдалась 2021 гг., АОТ на длине волны 0,5 мкм варьировал от 0,23 до 0,27 крупномасштабных лесных пожаров бореальных лесах Сибири Якутии. Несмотря то, что 2022-2023 количество площадь уменьшились, отдельные дни отмечено увеличение из-за переноса дымового аэрозоля, подтверждается данными MODIS (MAIAC) траекторным анализом движения воздушных масс HYSPLIT. По результатам отбора проб проведен химический анализ состава аэрозолей, доминирующими ионами аэрозолей являются Cl-, K+, SO4^2-, Ca^2+, Na+. Данные ионы имеют хорошую взаимосвязь K+ (r=0.8), который является ключевым показателем выбросов сжигания биомассы. This work presents the results of continuous measurements aerosol optical depth (AOD) during summer period from to in atmosphere southeastern coast Lake Baikal (station "Boyarsky") using ground-based and satellite observations their analysis. The maximum atmospheric turbidity was observed 2021, with AOD at a wavelength 0.5 µm varying 0.23 0.27 large-scale wildfires boreal forests Siberia Yakutia. Although number area decreased 2022-2023, an increase noted on certain days due transport smoke aerosol, as confirmed by data HYSPLIT trajectory analysis air mass movement. Chemical composition conducted based collected samples, dominant ions being show good correlation which is key indicator biomass burning emissions.

Язык: Русский

Extreme wildfires over Northern Greece during Summer 2023 – Part B. Adverse effects on regional air quality DOI Creative Commons
Maria-Elissavet Koukouli, Andreas Pseftogkas,

Dimitris Karagkiozidis

и другие.

Atmospheric Research, Год журнала: 2025, Номер unknown, С. 108034 - 108034

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

1
Seasonal changes in water-soluble brown carbon (BrC) at Nanling background station in South China DOI Creative Commons
Bolong Zhang, Jiao Tang, Xiaofei Geng

и другие.

Frontiers in Environmental Science, Год журнала: 2024, Номер 12

Опубликована: Фев. 14, 2024

Brown carbon (BrC) is an important light-absorbing component of organic (OC), causing large uncertainty in aerosol radiative forcing evaluation and being related to health issues as well. Knowledge BrC atmospheric background station beneficial understand its role a changing climate. A year-long sampling campaign was conducted at Nanling get comprehensive knowledge WS-BrC, total seventy-two PM 2.5 samples throughout year were used. Light absorption fluorescence spectra WSOC analyzed synchronously using spectrophotometer. The low levels , OC, elemental (EC) conferred site. optical properties WS-BrC characterized excitation-emission matrix (EEM) spectroscopy. made significant contribution (365 nm, 18% ± 10%) carbonaceous absorption. mass efficiency (MAE) 0.81 0.34 m 2 gC –1 varies among seasons due the different sources or processing. Three EEM fluorescent components identified by parallel factor (PAFAFAC) analysis, including two humic-like substances (HULIS, C1, C2), one phenolic-like component. HULIS accounted for approximately 70% intensities. Primary combustion emissions showed enhanced activity during winter spring seasons, but there no influences on spring. Secondary contributed significantly winter, summer, autumn (all exceeding 50%), except Photooxidation process formation secondary autumn, may be another pathway i.e., ammonia pathway. This study contributes our understanding atmosphere.

Язык: Английский

Процитировано

4
A European aerosol phenomenology – 9: Light absorption properties of carbonaceous aerosol particles across surface Europe DOI Creative Commons
Jordi Rovira, Marjan Savadkoohi, Gang Chen

и другие.

Environment International, Год журнала: 2024, Номер 195, С. 109185 - 109185

Опубликована: Дек. 9, 2024

Carbonaceous aerosols (CA), composed of black carbon (BC) and organic matter (OM), significantly impact the climate. Light absorption properties CA, particularly BC brown (BrC), are crucial due to their contribution global regional warming. We present (b

Язык: Английский

Процитировано

4
Black carbon and particulate matter concentrations amid central Chile's extreme wildfires DOI
Fabián Guerrero, Lorena Espinoza, Víctor Vidal

и другие.

The Science of The Total Environment, Год журнала: 2024, Номер 951, С. 175541 - 175541

Опубликована: Авг. 14, 2024

Язык: Английский

Процитировано

3
Extreme wildfires over northern Greece during summer 2023 – Part A: Effects on aerosol optical properties and solar UV radiation DOI
Konstantinos Michailidis, Katerina Garane,

Dimitris Karagkiozidis

и другие.

Atmospheric Research, Год журнала: 2024, Номер unknown, С. 107700 - 107700

Опубликована: Сен. 1, 2024

Язык: Английский

Процитировано

3
Unveiling the Impact of Wildfires on Nanoparticle Characteristics and Exposure Disparities through Mobile and Fixed-Site Monitoring in Toronto, Canada DOI
Junshi Xu,

Arman Ganji,

Milad Saeedi

и другие.

Environmental Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Март 12, 2025

This study investigates the impacts of wildfires on nanoparticle characteristics and exposure disparities in Toronto, integrating data from a large-scale mobile monitoring campaign fixed-site measurements during unprecedented 2023 wildfire season. Our results reveal changes particle days, with number concentrations decreasing by 60% diameter increasing 30% compared to nonwildfire days. Moreover, median lung deposited surface area (LDSA) levels rose 31% events. We employed gradient boosting models estimate near-road LDSA both The ratio (wildfire/nonwildfire) exceeded 2.0 certain areas along highways downtown Toronto. Furthermore, our findings show that marginalized communities faced greater increases than less ones. Under conditions, difference between most least groups was 16% for recent immigrants visible minorities 7% seniors children, statistically significant. delivers critical insights into spatiotemporal variations periods, demonstrating substantial health risks posed increased inequitable distribution these among Toronto's diverse population.

Язык: Английский

Процитировано

0
Impacts of Wildfire Smoke Aerosols on Radiation, Clouds, Precipitation, Climate, and Air Quality DOI Creative Commons

Rahele Barjeste Vaezi,

Michael Martin, Farnaz Hosseinpour

и другие.

Atmospheric Environment X, Год журнала: 2025, Номер unknown, С. 100322 - 100322

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0
Radiative cooling in New York/New Jersey metropolitan areas by wildfire particulate matter emitted from the Canadian wildfires of 2023 DOI Creative Commons
Georgios A. Kelesidis, Constantinos Moularas, Hooman Parhizkar

и другие.

Communications Earth & Environment, Год журнала: 2025, Номер 6(1)

Опубликована: Апрель 21, 2025

Wildfire particulate matter from Canadian forest fires significantly impacted the air quality in northeastern United States during summer of 2023. Here, we used real-time and time-integrated instrumentation to characterize physicochemical properties radiative effects wildfire reaching metropolitan areas New Jersey/ York this extreme incident. The forcing -352.4 W/m2 derived here based on measured optical explains, some extent, ground level temperature reduction about 3 °C observed City Such negative densely populated megacities may limit natural ventilation, increase residence time background pollutants, exacerbating public health risks. This study highlights importance their potential implications for climate, health.

Язык: Английский

Процитировано

0
Seasonal and wildfire biomass burning impact on gas-fuel heated northern European megacity: brown carbon apportionment DOI
Olga Popovicheva, Marina Chichaeva, Р. Г. Ковач

и другие.

Atmospheric Environment, Год журнала: 2025, Номер unknown, С. 121325 - 121325

Опубликована: Май 1, 2025

Язык: Английский

Процитировано

0
Atmospheric aerosol chemistry and source apportionment of PM10 using stable carbon isotopes and PMF modelling during fireworks over Hyderabad, southern India DOI Creative Commons
Pradeep Attri,

Devleena Mani,

M. Satyanarayanan

и другие.

Heliyon, Год журнала: 2024, Номер 10(5), С. e26746 - e26746

Опубликована: Март 1, 2024

This study examined the influence of fireworks on atmospheric aerosols over Southern Indian city Hyderabad during festival Diwali using mass closure, stable carbon isotopes and EPA-PMF model. Identification chemical species in day night time aerosol samples for 2019 2020 weeks showed increased concentrations NH4+, NO3−, SO42−, K+, organic (OC), Ba, Pb Li, which were considered as tracers fireworks. PM10 source apportionment was done inorganic (trace elements, major ions) carbonaceous (organic elemental carbon; OC & EC) constituents, along with isotopic compositions TC EC. K+/Na+ ∼1 K+nss/OC > 0.5 indicated contribution from High Na+, Cl− SO42− suggested presence deliquescent salts NaCl, NH4NO3 (NH4)2SO4. TAE/TCE >1 H+ exclusion, indicating possible H2SO4 NH4HSO4 aerosols. Pb, Sb, Sr Fe by 305 (87), 12 (11), (3), 3 (2) (4) times nights, compared to pre-Diwali (2020), are metallic δ13CTC δ13CEC closely resembled that diesel C3 plant burning emissions, meagre firecrackers period. The relatively depleted than δ13COC. For both years, δ13COC-EC (δ13COC - δ13CEC) positive, suggesting photochemical aging long-range transport, while post-Diwali 2020, negative high OC/EC ratio, implying secondary formation. toluene week contributed fresh SOA formation, reacted precursor 12C, leading 13C depletions. Eight-factored highest residue/waste burning, followed marine/dust soil fireworks, least solid fuel/coal combustion.

Язык: Английский

Процитировано

3