Development of a high-resolution integrated emission inventory of air pollutants for China

Earth system science data, Journal Year: 2024, Volume and Issue: 16(6), P. 2893 - 2915

Published: June 21, 2024

Abstract. Constructing a highly resolved comprehensive emission dataset for China is challenging due to limited availability of refined information parameters in unified bottom-up framework. Here, by developing an integrated modeling framework, we harmonized multi-source heterogeneous data, including several up-to-date inventories at national and regional scales key species sources generate 0.1° resolution inventory 2017. By source mapping, temporal disaggregation, spatial allocation, spatial–temporal coupling, different are normalized terms categories, chemical species, spatiotemporal resolutions. This achieves the coupling multi-scale, high-resolution with Multi-resolution Emission Inventory (MEIC), forming INTegrated Air pollutants (INTAC). We find that INTAC provides more accurate representations magnitudes patterns. In 2017, China's emissions sulfur dioxide (SO2), nitrous oxides (NOx), carbon monoxide (CO), non-methane volatile organic compounds (NMVOCs), ammonia (NH3), PM10 PM2.5 (particulate matter), black (BC), (OC) were 12.3, 24.5, 141.0, 27.9, 9.2, 11.1, 8.4, 1.3, 2.2 Tg, respectively. The proportion point SO2, PM10, NOx, increases from 7 %–19 % MEIC 48 %–66 INTAC, resulting improved accuracy, especially mitigating overestimations densely populated areas. Compared MEIC, reduces mean biases simulated concentrations major air 2–14 µg m−3 across 74 cities, compared against ground observations. enhanced model performance particularly evident finer-grid Our new accessible http://meicmodel.org.cn/intac (last access: 15 April 2024) https://doi.org/10.5281/zenodo.10459198 (Wu et al., 2024), it will provide solid data foundation fine-scale atmospheric research air-quality improvement.

Language: Английский

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Quantitative analysis of winter PM2.5 reduction in South Korea, 2019/20 to 2021/22: Contributions of meteorology and emissions

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 907, P. 168179 - 168179

Published: Oct. 29, 2023

To quantitatively analyze the factors contributing to change in winter PM

Language: Английский

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Changing Responses of PM_2.5 and Ozone to Source Emissions in the Yangtze River Delta Using the Adjoint Model

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 58(1), P. 628 - 638

Published: Dec. 28, 2023

China's industrial restructuring and pollution controls have altered the contributions of individual sources to varying air quality over past decade. We used GEOS-Chem adjoint model investigated changing sensitivities PM2.5 ozone (O3) multiple species from 2010 2020 in central Yangtze River Delta (YRDC), largest economic region China. Controlling primary particles SO2 residential sectors dominated decline, reducing CO ≥C3 alkenes vehicles restrained O3. The chemical regime O3 formation became less VOC-limited, attributable continuous NOX abatement for specific sources, including power plants, combustion, cement production, off-road traffic. Regional transport was found be increasingly influential on PM2.5. To further improve quality, management agricultural activities reduce NH3 is essential alleviating pollution, while controlling aromatics, alkenes, alkanes industry gasoline effective Reducing level nearby combustion transportation helpful both species. Our findings reveal complexity coordinating control a fast-developing support science-based policymaking other regions with similar problems.

Language: Английский

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Advancing Air Quality Monitoring Systems Towards Sustainable Green Development: Insight for Metropolitan Cities in Indonesia

Environmental and Sustainability Indicators, Journal Year: 2025, Volume and Issue: unknown, P. 100649 - 100649

Published: Feb. 1, 2025

Language: Английский

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Declining short-term emission control opportunity for major events in Chinese cities

Nature Cities, Journal Year: 2025, Volume and Issue: unknown

Published: April 28, 2025

Language: Английский

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A Decadal Change in Atmospheric Nitrogen Deposition at a Rural Site in Southern China

Atmosphere, Journal Year: 2024, Volume and Issue: 15(5), P. 583 - 583

Published: May 10, 2024

Elevated atmospheric reactive nitrogen (Nr) emissions and the subsequent (N) deposition have negatively impacted global environment, particularly in China. In order to assess long-term trends N south of China, Taojiang County Hunan Province was selected as a representative rural area for study. We analyzed interannual variation Nr, including gaseous ammonia (NH3), dioxide (NO2), nitrate acid (HNO3) vapor, particulate ammonium (NH4+), (NO3−) air NH4+-N NO3−-N precipitation from 2011 2020. The 10-year average wet-plus-dry 41.9 kg ha−1 yr−1, which decreased by approximately 24% after 2012, indicating that NH3 NOx were effectively reduced emission controls introduced 2013. Wet accounted 74% total significantly influenced annual amount. Reduced (NH3, pNH4+, NH4+ rainwater) dominant form, comprising 58% deposition, while oxidized (pNO3−, NO2, HNO3, NO3− 42% deposition. Atmospheric concentrations declined 30–80% over decade, remained at relatively stable levels, suggests ongoing research policy should focus on pollution. Future strategies must concentrate integrated control mitigate pollution protect human health, areas because current abatement efforts are primarily directed toward urban industrial sector, whereas non-point source pollution, mainly agricultural activities, dominates regions.

Language: Английский

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Quantifying the pollution changes and meteorological dependence of airborne trace elements coupling source apportionment and machine learning

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 948, P. 174452 - 174452

Published: July 2, 2024

Language: Английский

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Synergistic reduction of air pollutants and carbon dioxide emissions in Shanxi Province, China from 2013 to 2020

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 951, P. 175342 - 175342

Published: Aug. 6, 2024

Language: Английский

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Development of a High-Resolution Integrated Emission Inventory of Air Pollutants for China

Published: Jan. 26, 2024

Abstract. Constructing a highly-resolved comprehensive emission dataset for China is challenging due to limited availability of refined information parameters in unified bottom-up framework. Here, by developing an integrated modeling framework, we harmonized multi-source heterogeneous data including several up-to-date inventories at national and regional scale, key species sources China, generate 0.1° resolution inventory 2017. By source mapping, temporal disaggregation, spatial allocation spatial-temporal coupling, different are normalized terms categories, chemical species, spatiotemporal resolutions. This achieves the coupling multi-scale, high-resolution with MEIC (Multi-resolution Emission Inventory China), forming INTegrated Air pollutants (i.e., INTAC). We find that INTAC provides more accurate representations magnitudes patterns. In 2017, China’s emissions SO2, NOx, CO, NMVOC, NH3, PM10, PM2.5, BC, OC 12.3, 24.5, 141.0, 27.9, 9.2, 11.1, 8.4, 1.3 2.2 Tg, respectively. The proportion point PM2.5 increases from 7–19 % 48–66 INTAC, resulting improved accuracy, especially mitigating overestimations densely populated areas. Compared MEIC, reduced mean biases simulated concentrations major air 2–14 μg/m³ across 74 cities against ground observations. enhanced model performance was particularly evident finer grid Our new accessible https://doi.org/10.5281/zenodo.10459198 (Wu et al., 2024), it will provide solid foundation fine-scale atmospheric research quality improvement.

Language: Английский

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Investigation of Emission Inventory for Non-Road Mobile Machinery in Shandong Province: An Analysis Grounded in Real-World Activity Levels

Sustainability, Journal Year: 2024, Volume and Issue: 16(6), P. 2292 - 2292

Published: March 9, 2024

In tandem with the advancement of urban intelligent technology, construction remote monitoring platforms and databases for non-road mobile machinery is gradually improving in various provinces cities. Employing platform enables a detailed big data analysis actual operational state machinery. This method yields precise on activity levels types. Importantly, it addresses issue reduced accuracy emission inventories, which often arises from conventional practice using standard recommended values Guide to determine during compilation inventories. Based management system machinery, value level was obtained, inventory Shandong Province established. The PM, HC, NOx, CO main including forklifts, excavators, loaders, off-road trucks, road rollers, were measured. findings indicate that typically exceeded guideline’s values. Among them, annual use time port terminal ground handling equipment longest, an average working 4321.5 h per equipment, more than six times value. all types loader emissions accounted highest proportion, reaching 43.13% total pollutants. With tightening national Stage II III, significant reduction mechanical observed, primarily manifested as 91% decrease NOx emissions. platform, new compiling proposed this paper. calculated can reflect real situations provide reference basis control sustainable policy measures

Language: Английский

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