A5100771997- Atmospheric chemistry and aerosols
- Atmospheric and Environmental Gas Dynamics
- Air Quality and Health Impacts
- Air Quality Monitoring and Forecasting
- Atmospheric aerosols and clouds
- Atmospheric Ozone and Climate
- Meteorological Phenomena and Simulations
- COVID-19 impact on air quality
- Tropical and Extratropical Cyclones Research
- Climate variability and models
- Ocean Waves and Remote Sensing
- Geophysics and Gravity Measurements
- Fire effects on ecosystems
- Vehicle emissions and performance
- Mercury impact and mitigation studies
- Land Use and Ecosystem Services
- Ionosphere and magnetosphere dynamics
- Urban Green Space and Health
- Remote Sensing and Land Use
- Impact of Light on Environment and Health
- Oil Spill Detection and Mitigation
- Evaluation Methods in Various Fields
- Urban Design and Spatial Analysis
- Flood Risk Assessment and Management
- Fire dynamics and safety research
Peking University
2017-2025
Peking University Third Hospital
2025
State Key Joint Laboratory of Environment Simulation and Pollution Control
2025
Harvard University
2022-2024
Harvard University Press
2022-2024
State Key Laboratory of Clean Energy Utilization
2024
Xinyang Normal University
2022-2024
Zhejiang University
2024
Guangdong Ocean University
2008-2023
China Meteorological Administration
2023
Since its first confirmed case at the end of 2019, COVID-19 has become a global pandemic in three months with more than 1.4 million cases worldwide, as early April 2020. Quantifying changes pollutant emissions due to and associated governmental control measures is crucial understand impacts on economy, air pollution, society. We used WRF-GC model tropospheric NO2 column observations retrieved by TROPOMI instrument derive top-down NOx emission change estimation between periods: P1 (January...
Abstract. Time series data in practical applications always contain missing values due to sensor malfunction, network failure, outliers etc. In order handle time series, as well the lack of considering temporal properties machine learning models, we propose a spatiotemporal prediction framework based on value processing algorithms and deep recurrent neural (DRNN). By using tag interval represent patterns, implement three different fixing algorithms, which are further incorporated into that...
The evaporative emissions of anthropogenic volatile organic compounds (AVOCs) are sensitive to ambient temperature. This sensitivity forms an air pollution-meteorology connection that has not been assessed on a regional scale. We parametrized the temperature dependence AVOC fluxes in quality model and evaluated impacts surface ozone Beijing–Tianjin–Hebei (BTH) area China during summer 2017. dependency drove enhanced simulated ozone-temperature 1.0 1.8 μg m–3 K–1, comparable driven by...
Levoglucosan has been widely used to quantitatively assess biomass burning's contribution ambient aerosols, but previous such assessments have not accounted for levoglucosan's degradation in the atmosphere. We develop first global simulation of atmospheric levoglucosan, explicitly accounting its chemical degradation, evaluate impacts on use quantitative aerosol source apportionment. is emitted into atmosphere from burning plant matter open fires (1.7 Tg yr–1) and as biofuels (2.1 yr–1)....
Abstract Heavy rainfall is one of the major aspects tropical cyclones (TC) and can cause substantial damages. Here, we show, based on satellite observational data numerical model results, that between 1999 2018, rain rate in outer region TCs has been increasing, but it decreased significantly inner-core. Globally, TC increased by 8 ± 4% during this period, which mainly contributed an increase due to increasing water vapor availability atmosphere with rising surface temperature. On other...
Effective mitigation of surface ozone pollution entails detailed knowledge the contributing precursors' sources. We use GEOS-Chem adjoint model to analyze precursors in Beijing–Tianjin–Hebei area (BTH) China on days different severities June 2019. find that BTH heavily polluted is sensitive local emissions, as well emitted from provinces south (Shandong, Henan, and Jiangsu, collectively SHJ area). Heavy can be mitigated effectively by reducing NOx (from industrial processes transportation),...
Abstract. Nitrogen oxide radicals (NOx≡NO+NO2) emitted by fuel combustion are important precursors of ozone and particulate matter pollution, NO2 itself is harmful to public health. The Geostationary Environment Monitoring Spectrometer (GEMS), launched in space 2020, now provides hourly daytime observations columns over East Asia. This diurnal variation offers unique information on the emission chemistry NOx, but it needs be carefully interpreted. Here we investigate drivers observed GEMS...
Abstract. We developed the WRF-GC model, an online coupling of Weather Research and Forecasting (WRF) mesoscale meteorological model GEOS-Chem atmospheric chemistry for regional air quality modeling. WRF are both open-source community models. offers modellers access to latest chemical module, which is state science, well documented, traceable, benchmarked, actively by a large international user base, centrally managed dedicated support team. At same time, enables users perform...
Abstract. We present the WRF-GC model v2.0, an online two-way coupling of Weather Research and Forecasting (WRF) meteorological (v3.9.1.1) GEOS-Chem (v12.7.2). v2.0 is built on modular framework v1.0 further includes aerosol–radiation interaction (ARI) aerosol–cloud (ACI) based bulk aerosol mass composition, as well capability to nest multiple domains for high-resolution simulations. first implementation in open-source dynamic with chemical feedbacks meteorology. In WRF-GC, calculations are...
Abstract. We developed the WRF-GC model, an online coupling of Weather Research and Forecasting (WRF) mesoscale meteorological model GEOS-Chem atmospheric chemistry for regional air quality modeling. Both WRF are open-source community-supported. provides modellers easy access to chemical module, which is stably-configured, state-of-the-science, well-documented, traceable, benchmarked, actively by a large international user base, centrally managed dedicated support team. At same time, gives...
Abstract The study of energy flows in the Earth system is essential for understanding current climate change. To understand how accumulating and being distributed within system, an updated reconstruction fluxes at top atmosphere, surface atmosphere derived from observations presented. New satellite ocean data are combined with improved methodology to quantify recent variability meridional land heat transports since 1985. A global net imbalance found increase 0.10 ± 0.61 W m −2 over 1985–1999...
Abstract We combined observations and simulations to assess tropospheric ozone trends over Southeast Asia from 2005 2016. Multi‐platform showed that surface had been increasing at rates of 0.7–1.2 ppb year −1 the Peninsular (PSEA) 0.2–0.4 Maritime Continents (MC); columns rising throughout by 0.21–0.35 DU . These observed were better reproduced driven with satellite‐constrained NO x emissions, indicating emission growths may have underestimated for PSEA overestimated MC in Community...
Abstract The impacts of weather forecast uncertainties have not been quantified in current air quality forecasting systems. To address this, we developed an efficient 2‐D convolutional neural network‐surface ozone ensemble (2DCNN‐SOEF) system using network and forecasts, applied the to 216‐hr forecasts Shenzhen, China. 2DCNN‐SOEF demonstrated comparable performance operating systems met level accuracies required by Chinese authorities up 144‐hr lead time. Uncertainties contributed 38%–54%...
Abstract. Wildfires can have a significant impact on air quality in Australia during severe burning seasons, but incomplete knowledge of the injection heights smoke plumes poses challenge for quantifying exposure. In this study, we use two approaches to quantify fractions fire emissions injected above planetary boundary layer (PBL), and further investigate plume daily mean surface concentrations fine particulate matter (PM2.5) from wildfire key cities over northern southeastern 2009 2020....
Inequity in healthcare resources has been identified as a global public health priority, yet the geographic variations and temporal trends distribution inequity China remain unclear. We aimed to investigate these evaluate resource allocation China. In this nationwide descriptive study, we used provincial-level data on infrastructure, human, service from 31 provinces of mainland China, publicly released by National Health Commission between 2010-21. assessed spatial autocorrelation using...
Global ocean significantly contributes to atmospheric volatile organic compounds (VOCs), yet the characteristics, drivers, and impacts of marine VOC emissions on coastal air quality remain poorly understood due limited marine-terrestrial data integration. Therefore, we conducted a study in East China Sea─a region with high emission potential─and nearby city Yangtze River Delta─a background receptor site. Seawater showed marked spatial variability, alkenes forming an important component....
Open burning of crop residues is a strong seasonal source air pollutants in many parts China, but the large day-to-day variability associated emissions pose great challenge for quality forecasts. Here we developed back-propagation neural network (BPNN) ensembles to forecast daily fire pixel counts Southern China during month January. The BPNN were trained using assimilated surface meteorological data (including temperature, relative humidity, pressure, and winds) observations from Moderate...
In early 2020, two unique events perturbed ship emissions of pollutants around Southern China, proffering insights into the impacts on regional air quality: decline activities due to COVID-19 and global enforcement low-sulfur (<0.5%) fuel oil for ships. January February estimated NOx, SO2, primary PM2.5 over China dropped by 19, 71, 58%, respectively, relative same period in 2019. The NOx was mostly coastal waters inland waterways reduced activities. SO2 most pronounced outside Chinese...
Abstract. Nitrogen oxide radicals (NOx ≡ NO + NO2) emitted by fuel combustion are important precursors of ozone and particulate matter pollution, NO2 itself is harmful to public health. The Geostationary Environment Monitoring Spectrometer (GEMS), launched in space 2020, now provides hourly daytime observations columns over East Asia. This diurnal variation offers unique information on the emission chemistry NOx, but it needs be carefully interpreted. Here we investigate drivers observed...