Ruijing Ni

ORCID: 0000-0003-3072-6817
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About
Contact & Profiles
Research Areas
  • Air Quality and Health Impacts
  • Atmospheric chemistry and aerosols
  • Air Quality Monitoring and Forecasting
  • Atmospheric Ozone and Climate
  • Atmospheric and Environmental Gas Dynamics
  • Climate Change and Health Impacts
  • Energy, Environment, Economic Growth
  • Vehicle emissions and performance
  • Environmental Impact and Sustainability
  • Energy, Environment, and Transportation Policies
  • Powder Metallurgy Techniques and Materials
  • Energy and Environment Impacts
  • Fiscal Policy and Economic Growth
  • Marine and coastal ecosystems
  • Atmospheric aerosols and clouds
  • Fire effects on ecosystems
  • Graphite, nuclear technology, radiation studies
  • Particle Dynamics in Fluid Flows
  • Climate Change Policy and Economics
  • Environmental Policies and Emissions
  • Nuclear and radioactivity studies
  • Advanced materials and composites
  • Maternal and Neonatal Healthcare
  • Radiative Heat Transfer Studies
  • Global Health Care Issues

Fujian Agriculture and Forestry University
2024-2025

Max Planck Institute for Chemistry
2022-2024

Beijing Sport University
2024

Peking University
2016-2023

China has enacted a number of ambitious pollution control policies to mitigate air in urban areas. Unintended side effects these other environmental policy arenas and regions have largely been ignored. To bridge this gap, we use multiregional input-output model combination with an atmospheric chemical transport simulate clean scenarios evaluate their impacts on primary PM2.5 secondary precursor emissions, as well CO2 emissions water consumption, the target region spillover regions. Our...

10.1126/sciadv.aav4707 article EN cc-by-nc Science Advances 2019-04-05

Abstract. In the past decade, ozone (O3) pollution has become a severe environmental problem in China's major cities. Here, based on available observational records, we investigated long-term trend of O3 China during 2014–2020. The concentrations were slightly higher urban areas than non-urban areas. During these 7 years, highest primarily occurred summer northern China, and autumn or spring southern China. Although precursors, including nitrogen oxides (NOx) carbon monoxide (CO),...

10.5194/acp-22-8935-2022 article EN cc-by Atmospheric chemistry and physics 2022-07-12

Abstract. Recent studies have shown that surface ozone (O3) concentrations over central eastern China (CEC) increased significantly during the past decade. We quantified effects of changes in meteorological conditions and O3 precursor emissions on levels CEC between July 2003 2015 using GEOS-Chem model. The simulated monthly mean maximum daily 8 h average concentration (MDA8 O3) by approximately 13.6 %, from 65.5±7.9 ppbv (2003) to 74.4±8.7 (2015), comparable observed results. change...

10.5194/acp-19-1455-2019 article EN cc-by Atmospheric chemistry and physics 2019-02-04

The inaccurate quantification of personal exposure to air pollution introduces error and bias in health estimations, severely limiting causal inference epidemiological research worldwide. Rapid advancements affordable, miniaturised sensor technologies offer the potential address this limitation by capturing high variability during daily life large-scale studies with unprecedented spatial temporal resolution. However, concerns remain regarding suitability novel sensing for scientific policy...

10.5194/amt-12-1-2019 article EN cc-by Atmospheric measurement techniques 2019-01-02

Abstract. We present a new product with explicit aerosol corrections, POMINO-TROPOMI, for tropospheric nitrogen dioxide (NO2) vertical column densities (VCDs) over East Asia, based on the newly launched TROPOspheric Monitoring Instrument an unprecedented high horizontal resolution. Compared to official TM5-MP-DOMINO (OFFLINE) product, POMINO-TROPOMI shows stronger concentration gradients near emission source locations and better agrees MAX-DOAS measurements (R2=0.75; NMB=0.8 % versus...

10.5194/amt-13-4247-2020 article EN cc-by Atmospheric measurement techniques 2020-08-13

Abstract. China is facing a severe ozone problem, but the origin of its remains unclear. Here we use GEOS-Chem based global–regional two-way coupled model system to quantify individual contributions eight emission source regions worldwide springtime in 2008 over China. The reproduces observed from 31 ground sites and various aircraft ozonesonde measurements nearby countries, with mean bias 10 %–15 % both near surface troposphere. We then combine zero-out simulations, tagged linear weighting...

10.5194/acp-18-11447-2018 article EN cc-by Atmospheric chemistry and physics 2018-08-15

High-resolution (e.g., 5 km) emission data of nitrogen oxides (NOx = NO + NO2) provide localized knowledge pollution sources for targeted regulations, yet such are lacking or inaccurate over most regions at present. Here we improve our PHLET-based inversion method to derive NOx emissions in China a 5-km resolution summer 2019, based on the TROPOMI-POMINO satellite product dioxide (NO2) columns. With low computational costs, explicitly accounts effects horizontal transport and nonlinear...

10.1021/acs.est.1c07723 article EN Environmental Science & Technology 2022-03-18

Forest fire risk mapping is an essential measure for forest management. Quickly and precisely assessing risks, rationally planning zones, scientifically allocating firefighting resources are of great significance mitigating the increasingly severe threat fires. This study utilized random (RF) algorithm Fuzzy Analytic Network Process (FANP) to conduct a risk-zoning in protection development belt Wuyishan National Park. The findings revealed that some areas western southern parts this region...

10.3390/f16010097 article EN Forests 2025-01-09

Abstract Clinical experience suggests increased incidences of neonatal jaundice when air quality worsens, yet no studies have quantified this relationship. Here we reports investigations in 25,782 newborns showing an increase newborn’s bilirubin levels, the indicator risk, by 0.076 (95% CI: 0.027–0.125), 0.029 (0.014–0.044) and 0.009 0.002–0.016) mg/dL per μg/m 3 for PM 2.5 exposure concentration ranges 10–35, 35–75 75–200 , respectively. The response is 0.094 (0.077–0.111) 0.161...

10.1038/s41467-019-11387-3 article EN cc-by Nature Communications 2019-08-20

Abstract In a globalized economy, production of goods can be disrupted by trade disputes. Yet the resulting impacts on carbon dioxide emissions and ambient particulate matter (PM 2.5 ) related premature mortality are unclear. Here we show that in contrast to free world, with emission intensity each sector unchanged, an extremely anti-trade scenario current tariffs plus additional 25% tariff traded product would reduce global export volume 32.5%, gross domestic 9.0%, 6.3%, PM -related 4.1%....

10.1038/s41467-019-12890-3 article EN cc-by Nature Communications 2019-10-30

Nationwide severe air pollution has prompted China to mandate the adoption of ultralow emissions (ULE) control technologies at all its coal-fired power plants by 2020. This process accelerated greatly since 2014 and, combined with operational adjustments related overcapacity, reduced nitrogen oxides (NO x), sulfur dioxide (SO2), and particulate matter (PM). Yet quantitative understanding ULE benefits is poor. Using detailed data from 38 units 17 plants, corresponding 10 combinations...

10.1021/acs.est.8b07241 article EN Environmental Science & Technology 2019-01-28

The ongoing trade war between the United States and China is having profound impacts on global economy. As recent studies have found substantial amounts of carbon dioxide air pollution embedded in supply chains, Sino–US may also affect emissions health burdens worldwide, which remains poorly understood. Here, we estimate potential changes gross domestic product (GDP), anthropogenic particulate matter (PM2.5) related premature deaths worldwide under two scenarios. We find that for US China,...

10.1088/1748-9326/aba3d5 article EN cc-by Environmental Research Letters 2020-07-08

Abstract. Emission datasets of nitrogen oxides (NOx) at high horizontal resolutions (e.g., 0.05∘×0.05∘) are crucial for understanding human influences fine scales, air quality studies, and pollution control. Yet high-resolution emission data often missing or contain large uncertainties especially the developing regions. Taking advantage long-term satellite measurements dioxide (NO2), here we develop a computationally efficient method estimating NOx emissions in major urban areas 0.05∘×0.05∘...

10.5194/acp-19-12835-2019 article EN cc-by Atmospheric chemistry and physics 2019-10-15

Abstract TA15 alloy billets were prepared by powder metallurgy-hot isostatic pressing, using 920°C, 120MPa, and a 3h holding time. Pre-alloyed powders plasma rotating electrode process, gas atomization, hydrogen dehydrogenation. The particle morphology, chemical composition, size distribution, microstructure of the different first characterized. Then, differences in mechanical properties three analyzed. results show HIP-P (tensile strength 956 MPa, elongation 16.5%) HIP-G 912 16.83%) have an...

10.1088/1742-6596/2956/1/012035 article EN Journal of Physics Conference Series 2025-03-01

Abstract. The TROPOspheric Monitoring Instrument (TROPOMI), aboard the Sentinel-5 Precursor (S5P) satellite launched in October 2017, is dedicated to monitoring atmospheric composition associated with air quality and climate change. This paper presents global retrieval of TROPOMI tropospheric formaldehyde (HCHO) nitrogen dioxide (NO2) vertical columns using an updated version Peking University OMI NO2 (POMINO) algorithm, which focuses on improving calculation mass factors (AMFs). algorithm...

10.5194/amt-18-1561-2025 article EN cc-by Atmospheric measurement techniques 2025-04-03

Fires pose serious threats to human life, forest environments, and biodiversity. Small-scale regional fire risk mapping is crucial for management. We combined bivariate statistics (weight of evidence, WOE, statistical index, SI) with multi-criteria decision analysis (analytic hierarchy process, AHP, analytic network ANP) construct new WOE-ANP SI-ANP comprehensive models conduct zoning in Wangmo County, Guizhou Province. The results showed that most areas the southern, western, northern parts...

10.13287/j.1001-9332.202501.030 article EN PubMed 2025-01-18
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