A5101554413- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Atmospheric aerosols and clouds
- Atmospheric Ozone and Climate
- Air Quality Monitoring and Forecasting
- Atmospheric and Environmental Gas Dynamics
- Climate variability and models
- Meteorological Phenomena and Simulations
- Vehicle emissions and performance
- Wind and Air Flow Studies
- Urban Heat Island Mitigation
- Fire effects on ecosystems
- Tropical and Extratropical Cyclones Research
- Oceanographic and Atmospheric Processes
- Coastal and Marine Dynamics
- Remote Sensing and Land Use
- Ocean Waves and Remote Sensing
- Climate Change and Health Impacts
- Toxic Organic Pollutants Impact
- Marine and coastal ecosystems
- Ionosphere and magnetosphere dynamics
- Geophysics and Gravity Measurements
- Earthquake Detection and Analysis
- Odor and Emission Control Technologies
- Aerodynamics and Fluid Dynamics Research
Sun Yat-sen University
2015-2024
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)
2020-2024
Zhejiang University
2024
Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)
2020-2024
Key Laboratory of Guangdong Province
2017-2018
Harbin Institute of Technology
2018
Abstract. The structure of the atmospheric boundary layer (ABL) and its influence on regional air quality over Pearl River Delta (PRD) were examined through two intensive observations in October 2004 July 2006. Analytical results show presence types typical weather conditions associated with poor PRD. first is warm period before a cold front (WPBCF) second subsidence controlled by tropical cyclone (SPCTC). Two low situations, which are affected WPBCF SPCTC, one high situation analysed...
Abstract. Particulate matter (PM) pollution in China is an emerging environmental issue which policy makers and the public have increasingly paid attention to. In order to investigate characteristics, sources, chemical processes of PM Guangzhou, field measurements were conducted from 20 November 2017 5 January 2018, with a time-of-flight aerosol speciation monitor (ToF-ACSM) other collocated instruments. Mass concentrations non-refractory submicron particulate (NR-PM1) measured by ToF-ACSM...
Abstract. Spatiotemporal variations of ozone (O3) and nitrogen oxide (NOx) mixing ratios from 14 state-of-the-art chemical transport models (CTMs) are intercompared evaluated with O3 observations in East Asia, within the framework Model Inter-Comparison Study for Asia Phase III (MICS-Asia III). This study was designed to evaluate capabilities uncertainties current CTMs simulations provide multi-model estimates pollutant distributions. These were run by independent groups working China,...
Abstract. Surface ozone concentrations typically peak during the daytime, driven by active photochemical production, and decrease gradually after sunset, due to chemical destruction dry deposition. Here, we report that nocturnal enhancement (NOE, defined as an increase of more than 5 ppbv h−1 in 1 any 2 adjacent hours between 20:00 06:00 LT, local time) events are observed at multiple monitoring sites China a high frequency, which has not been recognized previous studies. We present overview...
The evolution of Large Language Models (LLMs) like ChatGPT and GPT-4 has sparked discussions on the advent Artificial General Intelligence (AGI). However, replicating such advancements in open-source models been challenging. This paper introduces InternLM2, an LLM that outperforms its predecessors comprehensive evaluations across 6 dimensions 30 benchmarks, long-context modeling, open-ended subjective through innovative pre-training optimization techniques. process InternLM2 is meticulously...
Abstract. Chlorine radicals can enhance atmospheric oxidation, which potentially increases tropospheric ozone concentration. However, few studies have been done to quantify the impact of chlorine emissions on formation in China due lack a emission inventory used air quality models with sufficient resolution. In this study, Anthropogenic Emissions Inventory for (ACEIC) was developed first time, including hydrogen chloride (HCl) and molecular (Cl2) from coal combustion prescribed waste...
Abstract. As part of the PRIDE-PRD2006 intensive campaign, atmospheric boundary layer (ABL) measurements were performed in Qingyuan, Panyu, and Xinken over Pearl River Delta (PRD) on 1–30 July 2006. During summer, surface winds PRD are generally controlled by south, usually with vertical wind shear at a height approximately 800 m. Subsidence precipitation from tropical cyclone affects air quality PRD. Under subsidence, speed ABL decrease result high-level concentrations. When background is...
A numerical simulation analysis was performed for three air pollution episodes in the Pearl River Delta (PRD) region during March 2012 using third-generation quality modeling system Models-3/CMAQ. The results demonstrated that particulate matter primary pollutant all and accompanied by relatively low visibility first two episodes. Weather maps indicate occurred under influence of warm, wet southerly flow systems led to high humidity throughout region. liquid phase reaction gaseous pollutants...
Abstract. Hazardous air pollutants, such as trace elements in particulate matter (PM), are known or highly suspected to cause detrimental effects on human health. To understand the sources and associated risks of PM health, hourly time-integrated major size-segregated coarse (PM2.5–10) fine (PM2.5) were collected at industrial city Foshan Pearl River Delta region, China. Receptor modeling data set by positive matrix factorization (PMF) was used identify six contributing PM2.5 PM10...
Vehicle emission is becoming one of the major sources gaseous pollutants and aerosol particles in urban air environments. Apart from pollutant source control, sustainable street design another significant technique to reduce pollution. Under validation by wind tunnel data, this paper conducts computational fluid dynamic (CFD) simulations RNG k-ε model investigate impacts typical layouts wall heating on dispersion (diameter d = 1 µm, 5 20 µm) target canyons their reentry toward downstream...
Abstract. Nighttime ozone in the lower boundary layer regulates atmospheric chemistry and surface air quality, but our understanding of its vertical structure impact is largely limited by extreme sparsity direct measurements. Here we present 3-year (2017–2019) measurements (up to 500 m) from Canton Tower Guangzhou, core megacity South China, interpret with a 1-month high-resolution chemical simulation Community Multiscale Air Quality (CMAQ) model. Measurements are available at 10, 118, 168,...
Abstract. Eastern China has suffered from severe photochemical O3 (ozone) pollution in recent years. In this coastal region, atmospheric environment can be influenced by sea spray aerosol (SSA) marine emissions. However, the extent and mechanisms which SSA affects formation remain incompletely understood. Here, using WRF-CMAQ model, study investigates comprehensive effect of on radical chemistry lower troposphere across four seasons. (over 50 % are particulate chlorine) reach further inland...
Abstract. The El Niño-Southern Oscillation (ENSO) modulates tropospheric ozone variability, yet quantitative contributions from individual processes and future responses remain unclear. Here, we evaluate GEOS-Chem chemical transport model ten climate-chemistry models (CCMs) in Coupled Model Intercomparison Project Phase 6 (CMIP6) capturing ozone-ENSO responses, quantify the roles of transport, chemistry, biomass burning, examine evolution these responses. simulation over 2005–2020 well...
The El Niño-Southern Oscillation (ENSO) significantly affects the interannual variability of tropospheric ozone, but quantitative contributions from individual processes and how ozone-ENSO response will change in future remain unclear. In this study, we apply GEOS-Chem global chemical transport models to quantify contribution transport, chemistry, biomass burning ozone different ENSO phases, evaluate ability climate-chemistry (CCMs) Coupled Model Intercomparison Project Phase 6...