A5049161125- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Atmospheric aerosols and clouds
- Atmospheric Ozone and Climate
- Air Quality Monitoring and Forecasting
- Vehicle emissions and performance
- Atmospheric and Environmental Gas Dynamics
- Environmental remediation with nanomaterials
- Maritime Transport Emissions and Efficiency
- Urban Heat Island Mitigation
- Software Reliability and Analysis Research
- Metal Extraction and Bioleaching
- Thermal Radiation and Cooling Technologies
- Toxic Organic Pollutants Impact
- Water Quality and Pollution Assessment
- Extraction and Separation Processes
- Mechanical Failure Analysis and Simulation
- Risk and Safety Analysis
- Machine Fault Diagnosis Techniques
- High voltage insulation and dielectric phenomena
- Arsenic contamination and mitigation
- Food Safety and Hygiene
- Reliability and Maintenance Optimization
- Environmental Quality and Pollution
- Salmonella and Campylobacter epidemiology
Hubei Engineering University
2025
Zhejiang University
2010-2024
Nanjing University of Information Science and Technology
2016-2024
National Institutes for Food and Drug Control
2023
China Meteorological Administration
2016-2017
Jiangxi University of Science and Technology
2012-2016
The size-resolved properties of atmospheric black carbon (BC) importantly determine its absorption capacity and cloud condensation nuclei (CCN) ability. This study reports comprehensive vertical profiles BC size-related over the Beijing area (BJ) Continental Europe (CE). mass loadings CE were in range clean background BJ. For both planetary boundary layer (PBL) lower free troposphere, median core diameter BJ during cold season was 0.21 ± 0.02 μm, larger than warm (0.18 0.01 μm), which may...
Emissions of light-absorbing black carbon (BC) and organic aerosol (OA) from biomass burning are presented as complex mixtures, which introduce challenges in modeling their absorbing properties. In this study, we chose typical residential wood emission used a novel designed chamber to investigate the early stage evolution plumes different phases under real ambient conditions. The detailed mixing state between BC OA was evaluated, on basis optical performed achieve closure aerosol-absorbing...
Abstract. Characterizing vertical profiles of aerosol optical properties is important because relying on only the surface or column-integrated measurements cannot unambiguously constrain radiative impacts aerosol. This study presents series in situ measured multi-wavelength aerosols during three pollution events from November to December 2016 over Beijing region. For all events, clean periods (CPs) before initialization showed a higher scattering Ångström exponent (SAE) and smaller asymmetry...
Abstract The complex particle morphology of black carbon (BC) induces considerable uncertainties in constraining its optical properties. In particular, the diversity how BC core and coating are combined is yet to be resolved due lack direct ambient quantification. this study, by concurrent measurements electrical mobility diameter ( D m ) volume‐equivalent ve ), dynamic shape factor χ = / BC‐containing particles at different mixing states was quantified for first time. urban Beijing showed a...
Abstract. The water uptake of aerosol influences its optical depth and capacity for cloud formation, depending on the vertical profile hygroscopicity because different solar radiation received supersaturation (SS) conditions at atmospheric levels. Such information is lacking over polluted East Asian region. This study presents aircraft-based in situ measured size distributions chemical compositions by a series flights Beijing area wintertime. Under high relative humidity (hRH) (surface RH...
Abstract Understanding the droplet activation of black carbon (BC) under water supersaturation (SS) conditions is crucial to estimate its lifetime (through scavenging) and indirect radiative impacts. However, directly probing ambient BC challenging because difficulty in discriminating BC‐containing particles (BCc) from other components. Here, we coupled measurements number concentrations between size‐resolved cloud condensation nuclei (CCN) individual BCc, achieving a direct quantification...
The light-absorbing organic aerosol (OA) constitutes an important fraction of absorbing components, counteracting major cooling effect aerosols to climate. mechanisms in linking the complex and changeable chemistry OA with its properties remain be elucidated. Here, by using solvent extraction, ambient from urban environment was fractionated according polarity, which further nebulized online characterized compositions properties. Water extracted high-polar compounds a significantly higher...
Abstract Wet scavenging of black carbon (BC) has been subject to large uncertainty, which importantly determines its atmospheric lifetime and indirect forcing impact on cloud microphysics. This study reveals the complex BC‐hydrometeor interactions in mixed‐phase clouds via single particle measurements real‐world environment, by capturing precipitation processes throughout formation, cold rain/graupel, subsequent snow events at a mountain site influenced anthropogenic sources wintertime. We...
Abstract Vertical distribution of black carbon (BC) determines the layer where its heating impacts exert. This study presents continuous and simultaneous measurements at surface on a mountain site above wintertime planetary boundary influenced by uplifted anthropogenic emissions. BC was observed efficiently transported upwards daytime convective mixing. However, this vertical transport less for other particulate masses. An about twofold higher mass fraction thus present than surface, hereby...
Abstract. Aerosols at the top of planetary boundary layer (PBL) could modify its atmospheric dynamics by redistributing solar radiation and start to be activated form low-level cloud this layer. Black carbon (BC), as an aerosol component efficiently absorbing radiation, can introduce heating positive radiative effects sensitive layer, especially in polluted PBL over continent. This study presents continuous measurements detailed BC properties a mountain site located North China Plain, during...
The coatings mixing with the refractory black carbon (rBC) may enhance its light absorption (Eabs). Uncertainty largely arises from to what extent can envelope rBC, in addition particle-resolved diversities for rBC size, coatings, and their combinations. Here, by using situ characterization of particle morphology all ambient BC, we propose a single metric well discriminate BC populations without Eabs, which is dynamic shape factor (χ) describe effect nonsphericity enhancing drag force an...
Abstract. The size-resolved physiochemical properties of aerosols determine their atmospheric lifetime, cloud interactions and the deposition rate on human respiratory system; however most composition studies tend to evaluate these in bulk. This study investigated constituents mass number basis, droplet activation properties, by coupling a suite online measurements with an aerosol aerodynamic classifier (AAC) based diameter (Da) Pinggu, suburb Beijing. While organic matter accounted for...
Abstract Secondary particulate matter exerts adverse effects on air quality and human health. The production or reaction rate of secondary aerosols in polluted environments remains uncertain is complicated by diverse emissions meteorological conditions. By concurrently measuring the mass spectra compounds both (using an aerosol spectrometer) gas phases proton‐transfer‐reaction spectrometry) suburban Beijing, we linked organic (OA) volatile (VOCs) to photochemical age ( t ) obtained their...
Abstract The heating impacts caused by black carbon (BC) may modify the atmospheric dynamics of planetary boundary layer (PBL), essentially determined its vertical distribution. In this study we performed simultaneous measurements detailed BC properties at both surface (50 m) and mountain sites (1,344 over Beijing region. latter represents top PBL was influenced anthropogenic emissions, particularly around midday when developed, allowing continuous investigations on evolution during...
Abstract. The light-absorbing organic aerosol (OA), known as brown carbon (BrC), has important radiative impacts; however, its sources and evolution after emission remain to be elucidated. In this study, the light absorption at multiple wavelengths, mass spectra of OA microphysical properties black (BC) were characterized a typical suburban environment in Beijing. BC is constrained by size distribution mixing state, BrC obtained subtracting from total absorption. Aerosol was further...
Abstract Emissions of carbonaceous aerosols (black carbon [BC] and organic aerosol [OA]) from biomass burning have important climate human health impacts. Not only the primary emissions are complicated by combustion phases, but also evolution after emission is not well understood. In this study, single plumes residential wood burning, extracted either flaming or smoldering phase, were injected into our novel chamber, to investigate their in real atmospheric conditions with without solar...
Abstract The fast development of a secondary aerosol layer was observed over megacities in eastern Asia during summertime. Within three hours, from midday to early afternoon, the contribution aerosols above planetary boundary (PBL) increased by factor five, and coatings on black carbon (BC) also enhanced its absorption efficiency 50%. This tended result intensive actinic flux received PBL which promoted photochemical reactions. BC could be further amplified strong reflection solar radiation...