Results 11 to 20 of about 70,659 (216)

Influencing factors of the gas–particle distribution of oxygenated organic molecules in the urban atmosphere and deviation from equilibrium partitioning: a random forest model study [PDF]

open access: yesAtmospheric Chemistry and Physics
Gas–particle partitioning governs the fate of oxygenated organic molecules (OOMs) and the formation of organic aerosols. We employed a Chemical Ionization Mass Spectrometer equipped with a Filter Inlet for Gases and AEROsol (FIGAERO-CIMS) to measure the ...
X. Wang   +6 more
doaj   +1 more source

Chemical Composition and Source of PM2.5 during Winter Heating Period in Guanzhong Basin

open access: yesAtmosphere, 2023
An intensive field campaign was carried out from December 2022 to March 2023 at six different sites across five major cities (Xi’an, Baoji, Xianyang, Weinan, and Hancheng) in the Guanzhong Basin, China, covering most of the heating period there, which is
Lei Cao   +6 more
doaj   +1 more source

Daytime atmospheric oxidation capacity in four Chinese megacities during the photochemically polluted season: a case study based on box model simulation [PDF]

open access: yesAtmospheric Chemistry and Physics, 2019
Atmospheric oxidation capacity is the basis for converting freshly emitted substances into secondary products and is dominated by reactions involving hydroxyl radicals (OH) during daytime.
Z. Tan   +17 more
doaj   +1 more source

High-resolution mapping of regional traffic emissions using land-use machine learning models [PDF]

open access: yesAtmospheric Chemistry and Physics, 2022
On-road vehicle emissions are a major contributor to significant atmospheric pollution in populous metropolitan areas. We developed an hourly link-level emissions inventory of vehicular pollutants using two land-use machine learning methods based on road
X. Wu   +19 more
doaj   +1 more source

Characteristics of Black Carbon Particle-Bound Polycyclic Aromatic Hydrocarbons in Two Sites of Nanjing and Shanghai, China

open access: yesAtmosphere, 2020
Airborne polycyclic aromatic hydrocarbons (PAHs) are of great concern to human health due to their potential high toxicity. Understanding the characteristics and sources of PAHs, as well as the governing factors, is therefore critical.
Shijie Cui   +10 more
doaj   +1 more source

Monitoring Air Pollution Variability during Disasters

open access: yesAtmosphere, 2021
National environmental regulations lack short-term standards for variability in fine particulate matter (PM2.5); they depend solely on concentration-based standards.
Earthea Nance
doaj   +1 more source

Analysis of a Pollution Transmission Process in Hefei City Based on Mobile Lidar [PDF]

open access: yesEPJ Web of Conferences, 2020
The air pollution has been regional in China with the development of economy. To monitoring the air pollution transmission, a new technique, mobile lidar system (GBQ-S01), was introduced.
Zhang Shuai   +5 more
doaj   +1 more source

Assessing the Impacts of Climate Change on Meteorology and Air Stagnation in China Using a Dynamical Downscaling Method

open access: yesFrontiers in Environmental Science, 2022
This study utilizes the Weather Research and Forecasting model with a higher resolution (36 km × 36 km) to dynamically downscale the Community Earth System Model results forced by the three representative concentration pathways (RCP) scenarios (RCP4.5 ...
Anqi Hu   +5 more
doaj   +1 more source

COMPARATIVE ANALYTICAL DATA OF AIR QUALITY IN BANJA LUKA CITY

open access: yesSTED Journal, 2022
In order to efficiently manage air quality at the location of Banja Luka city, a functional system for monitoring and controlling the degree of air pollution, that is to say air quality monitoring, has been established.
Nebojša Knežević, Igor Milunović
doaj   +1 more source

The Significant Impact of Biomass Burning Emitted Particles on Typical Haze Pollution in Changsha, China

open access: yesToxics
In this study, typical haze pollution influenced by biomass burning (BB) activities in Changsha in the autumn of 2024 was investigated through the mixing state and evolution process of BB particles via the real-time measurement of single-particle aerosol
Qu Xiao   +10 more
doaj   +1 more source

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