A5072539985- Air Quality and Health Impacts
- Atmospheric chemistry and aerosols
- Air Quality Monitoring and Forecasting
- Atmospheric aerosols and clouds
- COVID-19 impact on air quality
- Climate Change and Health Impacts
- Vehicle emissions and performance
- Atmospheric Ozone and Climate
- Geomagnetism and Paleomagnetism Studies
- Ionosphere and magnetosphere dynamics
- Toxic Organic Pollutants Impact
- Medical Research and Treatments
- Earthquake Detection and Analysis
- Solar and Space Plasma Dynamics
- Energy and Environment Impacts
- Smart Materials for Construction
- Urban Green Space and Health
- Thermoregulation and physiological responses
- Chinese history and philosophy
- Odor and Emission Control Technologies
- Landslides and related hazards
- Impact of Light on Environment and Health
- Regional Development and Environment
- Media, Gender, and Advertising
Forschungszentrum Jülich
2022-2024
University of Reading
2021-2023
Nanjing University of Information Science and Technology
2017-2022
State Forestry and Grassland Administration
2020
Nanjing University
2010
Abstract Severe events of wintertime particulate air pollution in Beijing (winter haze) are associated with high relative humidity (RH) and fast production sulfate from the oxidation sulfur dioxide (SO 2 ) emitted by coal combustion. There has been considerable debate regarding mechanism for SO oxidation. Here we show evidence field observations a haze event that rapid nitrogen (NO nitrous acid (HONO) takes place, latter producing oxide (N O). Sulfate shifts to larger particle sizes during...
Air pollution events occurred frequently in China, and tremendous efforts were devoted to the reduction of air recent years. Here, analysis ambient monitoring data six criteria pollutants from 367 Chinese cities during 2015–2018, showed that PM2.5, PM10, SO2 CO reduced significantly by 22.1%, 13.5%, 46.4% 21.5%, respectively, NO2 was less significant (6.3%) while O3 level instead increased over China (13.7%). Spatial distribution, seasonal, monthly diurnal variations 2018, implicated...
Abstract. Refractory black carbon (BC) is a product of incomplete combustion fossil fuel, biomass and biofuel, etc. By mixing with other species, BC can play significant roles in climate change, visibility impairment human health. Such BC-containing particles densely populated megacities like Beijing may have specific sources properties that are important to haze formation air quality. In this work, we exclusively characterized the urban by using laser-only Aerodyne soot particle aerosol...
The hygroscopic properties of BC-containing particles (BCc) are important to determine their wet scavenging, atmospheric lifetime, and interactions with clouds. Such information is still lacking in the real world because challenges isolating BCc from other aerosols be directly characterized. In this study, size-resolved chemical components including refractory BC core associated coatings were measured by a soot particle-aerosol mass spectrometer suburban Nanjing. hygroscopicity parameter...
Abstract. Refractory black carbon (rBC) aerosols play an important role in air quality and climate change, yet highly time-resolved detailed investigations on the physicochemical properties of rBC its associated coating are still scarce. In this work, we used a laser-only Aerodyne soot particle aerosol mass spectrometer (SP-AMS) to exclusively measure rBC-containing (rBCc) particles, compared their with those total nonrefractory submicron particles (NR-PM1) measured parallel by...
Abstract. Black carbon (BC) particles in Beijing summer haze play an important role the regional radiation balance and related environmental processes. Understanding factors that lead to variability of impacts BC remains limited. Here, we present observations by a soot-particle aerosol mass spectrometer (SP-AMS) BC-containing submicron particulate matter (BC−PM1) Beijing, China, during 2017. These were compared concurrently measured total non-refractory (NR−PM1) high-resolution (HR-AMS)....
Black carbon (BC) is one of the most important atmospheric aerosols. It can exert a positive radiative forcing by absorbing solar radiation and negative acting as cloud condensation nuclei (CCN) at top atmosphere (TOA). Furthermore, droplets with BC absorb more reduce their single‐scattering albedo (SSA), leading to (SSA forcing) TOA. Here we include such process into coupled modeling system (RegCCMS) which consists regional climate model (RegCM3) tropospheric chemistry (TACM) investigate...
In this paper, we report the results obtained from one year of real-time measurement (i.e., December 2019 to November 2020) atmospheric black carbon (BC) under a rural environment in Qingdao Northeastern China. The annual average concentration BC was 1.92 ± 1.89 μg m−3. highest observed winter (3.65 2.66 m−3), followed by fall (1.73 1.33 spring (1.53 and summer (0.83 0.56 m−3). A clear weekend effect winter, which characterized higher (4.60 2.86 m−3) during rather than that (3.22 2.45...
Abstract The COVID-19 restrictions in 2020 have led to distinct variations NO 2 and O 3 concentrations China. Here, the different drivers of anthropogenic emission changes, including effects Chinese New Year (CNY), China’s 2018–2020 Clean Air Plan (CAP), lockdown their impact on are isolated by using a combined model-measurement approach. In addition, contribution prevailing meteorological conditions concentration changes was evaluated applying machine-learning method. resulting...
Abstract Joule heating and radiative cooling usually play key roles in high‐latitude thermospheric temperature changes during geomagnetic storms. In the mesosphere lower thermosphere (MLT), however, causes of storm‐time at high latitudes are still elusive. Here, we elucidate nature mechanisms MLT variations 10 September 2005 storm by diagnostically analyzing thermodynamics Thermosphere Ionosphere Mesosphere Electrodynamics General Circulation Model (TIMEGCM) simulations. storm's initial main...
Abstract. Haze events in the North China Plain (NCP) and a decline ozone levels Southern Coast (SC) from 21 January to 9 February 2020 during COVID-19 lockdown have attracted public curiosity scholarly attention. Most previous studies focused on impact of atmospheric chemistry processes associated with anomalous weather elements these cases, but fewer quantified various within context specific pattern. To identify patterns responsible for inducing this unexpected situation further quantify...
Airborne polycyclic aromatic hydrocarbons (PAHs) are of great concern to human health due their potential high toxicity. Understanding the characteristics and sources PAHs, as well governing factors, is therefore critical. PAHs refractory black carbon (rBC) both from combustion sources. This work, for first time, investigated exclusively rBC-bound PAH properties by using a laser-only Aerodyne soot-particle aerosol mass spectrometer (SP-AMS). technique offers highly time-resolved results that...
Air pollution is one of the leading causes for global deaths and understanding pollutant emission sources key to successful mitigation policies. quality data in urban, suburban, industrial, rural areas (UA, SA, IA, RA) Jining, Shandong Province China, were collected compare characteristics associated health risks. The average concentrations PM 2.5 , 10 SO 2 NO CO show differences −3.87, −16.67, −19.24, −15.74, −8.37% between 2017 2018. On contrary, O 3 increased by 4.50%. four functional...
Abstract. Refractory black carbon (BC) is a product from incomplete combustion of fossil fuel, biomass and biofuel, etc. By mixing with other species, BC can play significant roles in climate change, visibility impairment human health. Such BC-containing particles very densely-populated megacities, like Beijing, may have specific sources properties, that are important to the haze formation air quality. In this work, we characterized exclusively only urban by using laser-only Aerodyne soot...
The impact of the annual solar eclipse, starting on 21st June 2020, attributable to surface ozone concentration (O 3 ) has been investigated in this study. To estimate influence eclipse O better, variations one reaction precursor production [nitrogen dioxide (NO 2 )], coupled with meteorological factors (including Total Solar Irradiance (TSI), Temperature (T), and Relative Humidity (RH)), were analyzed Yunnan Province, China. results show observed decreases from beginning reaching its...
Using the temperature data observed from Sounding of Atmosphere using Broadband Emission Radiometry (SABER), we investigate response mesosphere and lower thermosphere (MLT) to two medium geomagnetic storms with disparate durations, on 20 April 2018 10 2022. The high-latitude MLT increase in Southern hemisphere can reach 40 K during storm a longer duration (Kp values greater than 4 for 15 h), while variations are less 2022 event 6 h). To different responses durations understand what physical...