A5100351934- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Air Quality Monitoring and Forecasting
- Vehicle emissions and performance
- Plant responses to elevated CO2
- Seismic Imaging and Inversion Techniques
- Climate Change and Health Impacts
- Atmospheric aerosols and clouds
- Odor and Emission Control Technologies
- Methane Hydrates and Related Phenomena
- Hydrocarbon exploration and reservoir analysis
- Hydraulic Fracturing and Reservoir Analysis
- Marine and coastal ecosystems
- Rice Cultivation and Yield Improvement
- Agriculture, Soil, Plant Science
- Meteorological Phenomena and Simulations
- Cryospheric studies and observations
- Land Use and Ecosystem Services
- Ecology and Vegetation Dynamics Studies
- Fire effects on ecosystems
- Soil Carbon and Nitrogen Dynamics
- Soil and Water Nutrient Dynamics
- Irrigation Practices and Water Management
Peking University
2016-2025
Shanxi Cardiovascular Hospital
2025
Chinese Academy of Sciences
2010-2025
Hohai University
2018-2025
Sichuan Academy of Agricultural Sciences
2021-2025
Institute of Geochemistry
2019-2025
University of Bristol
2025
Ministry of Agriculture and Rural Affairs
2024-2025
Xuzhou Medical College
2024-2025
University of Chinese Academy of Sciences
2025
The nationwide extent of surface ozone pollution in China and its comparison to the global distribution have not been recognized because scarcity Chinese monitoring sites before 2012. Here we address this issue by using latest 5 year (2013–2017) measurements from network, combined with recent Tropospheric Ozone Assessment Report (TOAR) database for other industrialized regions such as Japan, South Korea, Europe, United States (JKEU). We use various human health vegetation exposure metrics....
China's nationwide ozone monitoring network initiated in 2013 has observed severe surface pollution. This network, combined with the recent Tropospheric Ozone Assessment Report (TOAR) data set, offers a more comprehensive view on global distribution and trends. Here, we report quantitative estimates of warm-season (April–September) trends resulting health impacts at Chinese cities 2013–2019. Both parametric nonparametric linear for 12 metrics relevant to human vegetation exposure are...
The goal of the Tropospheric Ozone Assessment Report (TOAR) is to provide research community with an up-to-date scientific assessment tropospheric ozone, from surface tropopause. While a suite observations provides significant information on spatial and temporal distribution observational gaps make it necessary use global atmospheric chemistry models synthesize our understanding processes variables that control ozone abundance its variability. Models facilitate interpretation allow us...
Abstract. A Nationwide Nitrogen Deposition Monitoring Network (NNDMN) containing 43 monitoring sites was established in China to measure gaseous NH3, NO2, and HNO3 particulate NH4+ NO3− air and/or precipitation from 2010 2014. Wet/bulk deposition fluxes of Nr species were collected by gauge method measured continuous-flow analyzer; dry estimated using airborne concentration measurements inferential models. Our observations reveal large spatial variations atmospheric concentrations wet/bulk...
Abstract. Severe surface ozone pollution over major Chinese cities has become an emerging air quality concern, raising a new challenge for emission control measures in China. In this study, we explore the source contributions to daily maximum 8 h average (MDA8) China 2016 and 2017, 2 years with highest averaged record. We estimate of anthropogenic, background, individual natural sources using GEOS-Chem chemical transport model at 0.25∘×0.3125∘ horizontal resolution most up-to-date...
Fine particulate matter (PM2.5, particles with a mass median aerodynamic diameter of less than 2.5 micrometers) in the atmosphere is associated severe negative impacts on human health, and gases sulfur dioxide, nitrogen oxides, ammonia are main PM2.5 precursors. However, their contribution to global health has not yet been analyzed. Here, we show that accounted for 39% exposure 2013, increasing from 30% 1990 rising reactive emissions successful controls dioxide. Nitrogen air caused an...
Abstract. We simulate nitrogen deposition over the US in 2006–2008 by using GEOS-Chem global chemical transport model at 1/2°×2/3° horizontal resolution North America and adjacent oceans. emissions of NOx NH3 are 6.7 2.9 Tg N a−1 respectively, including a 20% natural contribution for each. Ammonia factor 3 lower winter than summer, providing good match to network observations NHx (≡NH3 gas + ammonium aerosol) wet fluxes. Model comparisons observed fluxes surface air concentrations oxidized...
Abstract. Current estimates of agricultural ammonia (NH3) emissions in China differ by more than a factor 2, hindering our understanding their environmental consequences. Here we apply both bottom-up statistical and top-down inversion methods to quantify NH3 from agriculture for the year 2008. We first assimilate satellite observations column concentration Tropospheric Emission Spectrometer (TES) using GEOS-Chem adjoint model optimize Chinese anthropogenic at 1∕2° × 2∕3° horizontal...
Abstract. We combine CO column measurements from the MOPITT, AIRS, SCIAMACHY, and TES satellite instruments in a full-year (May 2004–April 2005) global inversion of sources at 4°×5° spatial resolution monthly temporal resolution. The uses GEOS-Chem chemical transport model (CTM) its adjoint applied to SCIAMACHY. Observations TES, surface sites (NOAA/GMD), aircraft (MOZAIC) are used for evaluation posteriori solution. Using as common intercomparison platform shows consistency between...
Abstract. We use an ensemble of aircraft, satellite, sonde, and surface observations for April–May 2006 (NASA/INTEX-B aircraft campaign) to better understand the mechanisms transpacific ozone pollution its implications North American air quality. The are interpreted with a global 3-D chemical transport model (GEOS-Chem). OMI NO2 satellite constrain Asian anthropogenic NOx emissions indicate factor 2 increase from 2000 in China. Satellite CO AIRS TES two major events during INTEX-B....
China has experienced a dramatic change in atmospheric reactive nitrogen (Nr) emissions over the past four decades. However, it remains unclear how (N) deposition responded to increases and/or decreases Nr emissions. This study quantitatively assesses temporal and spatial variations measurements of bulk calculated dry N from 1980 2018. A long-term database (1980–2018) shows that peaked around 2000, had declined by 45% 2016–2018. Recent (based on monitoring 2011 2018) decreased 2018, with...
Abstract. We use a 3-D global chemical transport model (GEOS-Chem) to interpret aircraft observations of nitrate and sulfate partitioning in transpacific dust plumes during the INTEX-B campaign April–May 2006. The includes explicit size-resolved mineral its alkalinity, nitrate, content. show that particulate is primarily associated with dust, ammonium, Asian remains alkaline across Pacific. This can be reproduced by using reactive uptake coefficient for HNO3 on (γ(HNO3) ~10−3) much lower...
In contrast to summer smog, the contribution of photochemistry formation winter haze in northern mid-to-high latitude is generally assumed be minor due reduced solar UV and water vapor concentrations. Our comprehensive observations atmospheric radicals relevant parameters during several events 2016 Beijing, however, reveal surprisingly high hydroxyl radical oxidation rates up 15 ppbv/h, which comparable values reported photochemical smog two three times larger than those determined previous...
Intensive agricultural activities in the North China Plain (NCP) lead to substantial emissions of nitrogen oxides (NOx) from soil, while role this source on local severe ozone pollution is unknown. Here we use a mechanistic parameterization soil NOx combined with two atmospheric chemistry models investigate issue. We find that presence NCP significantly reduces sensitivity anthropogenic emissions. The maximum air quality improvements July 2017, as can be achieved by controlling all domestic...
Abstract. Air quality models have not been able to reproduce the magnitude of observed concentrations fine particulate matter (PM2.5) during wintertime Chinese haze events. The discrepancy has at least partly attributed low biases in modeled sulfate production rates, due lack heterogeneous on aerosols models. In this study, we explicitly implement four formation mechanisms into a regional chemical transport model, addition gas-phase and in-cloud production. We compare model results with...
The limited availability of ammonia (NH3) measurements is currently a barrier to understanding the vital role NH3 in secondary aerosol formation during haze pollution events and prevents full assessment atmospheric deposition reactive nitrogen. observational gaps motivated us design this study investigate spatial distributions seasonal variations on national scale China. On basis 1-year campaign at 53 sites with uniform protocols, we confirm that abundant concentrations [1 23.9 μg m-3] were...
Substantial quantities of air pollution and related health impacts are ultimately attributable to household consumption. However, how consumption pattern affects remains unclear. Here we show, the 1.08 (0.74-1.42) million premature deaths due anthropogenic PM
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 There is an urgent need for agricultural systems to intensify sustainably, increasing crop productivity, farmer livelihoods and soil health while using fewer resources. Crop perennialization, the conversion of especially annual grains perennial forms, has shown such possibility. Here we report successful breeding rice assess its performance potential. Domesticated, Asian ( Oryza sativa ) was hybridized with African relative longistaminata . From a single planting, irrigated produced...
Nitrogen oxides (NOx = NO + NO2) emitted from combustion and natural sources are reactive gases that regulate the composition of Earth's atmosphere. Nocturnal oxidation driven by nitrate radicals is an important but poorly understood process in atmospheric chemistry, affecting lifetimes NOx ozone particulate pollution levels. Understanding trends to formulating effective mitigation strategies understanding influence on climate. Here we analyse publicly available monitoring data assess...
Abstract Halving nitrogen pollution is crucial for achieving Sustainable Development Goals (SDGs). However, how to reduce from multiple sources remains challenging. Here we show that reactive (Nr) could be roughly halved by managed urban development in China 2050, with NH 3 , NO x and N 2 O atmospheric emissions declining 44%, 30% 33%, respectively, Nr water bodies 53%. While rural-urban migration increases point-source metropolitan areas, it promotes large-scale farming, reducing rural...