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Multi-Material and Multiscale Topology Design Optimization of Thermoelastic Lattice Structures

Computer Modeling in engineering & Sciences 2022年第2期130卷 967-986页

作者： Jun Yan Qianqian Sui Zhirui Fan Zunyi Duan StateKey Laboratory of Structural Analysis for Industrial Equipment Department of EngineeringMechanicsInternational Research Center for Computational MechanicsDalian University of TechnologyDalian116024China Ningbo Research Institute of Dalian University of Technology Ningbo315016China Institute of Structural Health Monitoring and Control School of MechanicsCivil Engineering&ArchitectureNorthwestern Polytechnical UniversityXi’an710072China

This study establishes amultiscale andmulti-material topology optimization model for thermoelastic lattice structures(TLSs)consideringmechanical and thermal loading based on the ExtendedMultiscale Finite ElementMethod(EMsFEM).The corresponding multi-material and multiscale mathematical formulation have been established with minimizing strain energy and structural mass as the objective function and constraint,*** Solid Isotropic Material with Penalization(SIMP)interpolation scheme has been adopted to realize micro-scale multi-material selection of truss *** modified volume preserving Heaviside function(VPHF)is utilized to obtain a clear 0/1 material of truss *** with the classic topology optimization of single-material TLSs,multi-material topology optimization can get a better structural design of the *** effects of temperatures,size factor,and mass fraction on optimization results have been presented and discussed in the numerical examples.

关键词： Multi-material design optimization thermoelastic lattice structure multiscale topology optimization mass constraint strain energy

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A study on vertical fundamental frequency and dynamic response under human-induced load of suspended floors

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Zhendong yu Chongji/Journal of Vibration and Shock 2024年第24期43卷 234-242and258页

作者： Wang, Zhihao Song, Luyao Li, Yang Chen, Aijiu Hu, Mingyi Xu, Yanwei College of Civil Engineering and Transportation North China University of Water Resources and Eleetric Power Zhengzhou450045 China Henan Engineering Research Center for Structural Vihration Control and Health Monitoring North China University of Water Resources and Electric Power Zhengzhou450045 China Engineering Vihration Control Technology Research Center State Machinery Group Science and Technology Research Institute Co. Ltd. Beijing100083 China

A large-span suspended floor is a flexible structure, which may cause Vibration serviceability problems under human-induced vertical loads. In order to study the vertical Vibration Performances of suspended floors, firstly, vertical Vibration of a suspended floor was compared between a field test and finite element Simulation. Then, using asingle-story equivalent model of the unidirectional ribbed suspended floor System and based on the energy principle, a simplified calculation formula for the vertical fundamental frequency of the floor was derived. Finally, a multi factor impact analysis of the floor fundamental frequency was carried out, and an evaluation process for the serviceability of human-induced vertical Vibration of the suspended floor were summarized. Results show that, proposed based on the theory of floor bending Vibration, the simplified formula for the vertical fundamental frequency of the suspended floor is accurate, and it is suitable for rapid evaluation of the dynamic Performance. The vertical fundamental frequency of the suspended floor can be improved by reducing the spacing between rib beams appropriately, increasing the stiffness of ribs and beams, and arranging hanging pillars reasonably, to avoid excessive Vibration when the natural Vibration frequency of the suspended floor is close to the frequency of the pedestrian excitation. For the suspended floor under single pedestrian Walking, the dynamic response results of theoretical calculation, finite element Simulation and field measurement are in good agreement. The results can provide reference for the Vibration Performance analysis and the vertical Vibration serviceability evaluation of the suspended floor. © 2024 Chinese Vibration engineering Society. All rights reserved.

关键词： Vibration analysis

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Analysis of human-footbridge-MTMD coupled system and MTMD optimization design based on the pseudo-excitation method

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Zhendong Gongcheng Xuebao/Journal of Vibration engineering 2025年第4期38卷 794-802页

作者： Wen, Jinlong Li, Yang Wang, Zhihao Chen, Aijiu Hu, Mingyi College of Civil Engineering and Communication North China University of Water Resources and Electric Power Zhengzhou450045 China Faculty of Civil Engineering and Mechanics Kunming University of Science and Technology Kunming650000 China Henan Engineering Research Center for Structural Vibration Control and Health Monitoring Zhengzhou450045 China Engineering Vibration Control Technology Research Center State Machinery Group Science and Technology Research Institute Co. Ltd. Beijing100083 China

To establish the optimal design method of multiple tuned mass damper（MTMD）for the footbridge considering the vertical human-structure interaction，the parameters randomness of the mass-spring-damper（MSD）pedestrian model is simulated，and the vertical dynamic response of the random crowd-footbridge-MTMD system is calculated based on the pseudo-excitation method. Then，the effect of vertical human-structure interaction on the dynamic response of the footbridge-TMD system is demonstrated. Finally，based on the H2 performance of the acceleration transfer function and response surface methodology of the coupled system，an optimal design method of MTMD for footbridge vibration control considering vertical human-structure interaction is established. The results show that the dynamic response calculation method of the coupled system avoids a large number of nonlinear time history analyses，and the power spectrum and root mean square of the coupled system response can be obtained efficiently. The vertical human-structure interaction makes the TMD detuning effect significant，and the reduction rate of TMD with 3% mass ratio decreases by 37.19% when the crowd density increases from 0.25 person/m2 to 1.25 person/m2. The proposed MTMD optimization design method for footbridge has an average mitigation rate of over 70% for footbridge acceleration response. © 2025 Nanjing University of Aeronautics an Astronautics. All rights reserved.

关键词： Dynamic response

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Thermoelastic structural Topology Optimization Based on Moving Morphable Components Framework

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Computer Modeling in engineering & Sciences 2021年第9期128卷 1179-1196页

作者： Jun Yan Qi Xu Zhirui Fan Zunyi Duan Hongze Du Dongling Geng Department of EngineeringMechanics StateKey Laboratory of StructuralAnalysis for Industrial EquipmentInternational Research Center for Computational MechanicsDalian University of TechnologyDalian116024China Institute of Structural Health Monitoring and Control School of MechanicsCivil Engineering&ArchitectureNorthwestern Polytechnical UniversityXi’an710072China Ningbo Research Institute of Dalian University of Technology Ningbo315016China

This study investigates structural topology optimization of thermoelastic structures considering two kinds of objectives ofminimumstructural compliance and elastic strain energy with a specified available volume *** explicitly express the configuration evolution in the structural topology optimization under combination of mechanical and thermal load conditions,the moving morphable components(MMC)framework is *** on the characteristics of the MMC framework,the number of design variables can be reduced *** optimization formulation in the MMC topology optimization framework and numerical solution procedures are developed for several numerical *** optimization results are obtained with structural compliance and elastic strain energy as objectives,respectively,for thermoelastic *** effectiveness of the proposed optimization formulation is validated by the numerical *** is revealed that for the optimization design of the thermoelastic structural strength,the objective function with the minimum structural strain energy can achieve a better performance than that from structural compliance design.

关键词： Thermoelastic structure topology optimization moving morphable components minimum structural compliance minimum strain energy

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The 2023 report of the synergetic roadmap on carbon neutrality and clean air for China: Carbon reduction, pollution mitigation, greening, and growth

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Environmental Science and Ecotechnology 2025年第1期23卷 1-18页

作者： Jicheng Gong Zhicong Yin Yu Lei Xi Lu Qiang Zhang Cilan Cai Qimin Chai Huopo Chen Renjie Chen Wenhui Chen Jing Cheng Xiyuan Chi Hancheng Dai Zhanfeng Dong Guannan Geng Jianlin Hu Shan Hu Cunrui Huang Tiantian Li Wei Li Xiaomei Li Yongsheng Lin Jun Liu Jinghui Ma Yue Qin Weiqi Tang Dan Tong Jiaxing Wang Lijuan Wang Qian Wang Xuhui Wang Xuying Wang Libo Wu Rui Wu Qingyang Xiao Yang Xie Xiaolong Xu Tao Xue Haipeng Yu Da Zhang Li Zhang Ning Zhang Shaohui Zhang Shaojun Zhang Xian Zhang Zengkai Zhang Hongyan Zhao Bo Zheng Yixuan Zheng Tong Zhu Huijun Wang Jinnan Wang Kebin He State Key Joint Laboratory for Environment Simulation and Pollution Control College of Environmental Sciences and Engineering and Center for Environment and HealthPeking UniversityBeijing100871China Key Laboratory of Meteorological Disaster Ministry of Education/Joint International Research Laboratory of Climate and Environment Change(ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD)Nanjing University of Information Science&TechnologyNanjing210044China Center of Air Quality Simulation and System Analysis Chinese Academy of Environmental PlanningBeijing100041China Center for Carbon Neutrality Chinese Academy of Environmental PlanningBeijing100041China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China Institute for Carbon Neutrality Tsinghua UniversityBeijing100084China Ministry of Education Key Laboratory for Earth System Modelling Department of Earth System ScienceTsinghua UniversityBeijing100084China National Center for Climate Change Strategy and International CooperationBeijing100035China Nansen-Zhu International Research Centre Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing100029China School of Public Health Key Lab of Public Health Safety of the Ministry of Education and Key Lab of Health Technology Assessment of the Ministry of HealthFudan UniversityShanghai200032China School of Economics and Management Beijing University of Chemical TechnologyBeijing100029China Department of Earth System Science University of CaliforniaIrvineIrvineCA92697USA National Meteorological Center China Meteorological AdministrationBeijing100081China College of Environmental Sciences and Engineering Peking UniversityBeijing100871China Institute of Eco-Environmental Management and Policy Chinese Academy of Environmental PlanningBeijing100041China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Contr

The response to climate change and air pollution control demonstrates strong synergy across scientific mechanisms,targets,strategies,and governance *** report,based on a monitoring indicator system for coordinated governance of air pollution and climate change,employs an interdisciplinary approach combining natural and social *** establishes 20 indicators across five key areas:air pollution and climate change,governance systems and practices,structural transformation and technologies,atmospheric components and emission reduction pathways,and health impacts and *** report tries to provide actionable insights into the interconnectedness of air pollution and climate *** highlights key policy gaps,presents updated indicators,and offers a refined monitoring framework to track progress toward China's dual goals of reducing emissions and improving air *** to previous editions,this year's report has updated four key indicators:meteorological impacts on air quality,climate change and its effects,governance policies,and low-carbon building energy *** aim is to further refine the monitoring framework,track progress,and establish a comprehensive theory for collaborative governance while identifying challenges and proposing solutions for China's pathway to carbon neutrality and clean *** report comprises six *** executive summary chapter is followed by analyzing air pollution and climate change *** systems and practices are discussed in the third chapter,focusing on policy implementation and local *** fourth chapter addresses structural transformations and emission reduction technologies,including energy and industrial shifts,transportation,low-carbon buildings,carbon capture and storage,and power *** fifth chapter outlines atmospheric component dynamics and emission pathways,presenting insights into emission drivers and future *** sixth chapter assesses he

关键词： Synergetic roadmap Carbon neutrality Clean air

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The 2022 report of synergetic roadmap on carbon neutrality and clean air for China:Accelerating transition in key sectors

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Environmental Science and Ecotechnology 2024年第3期19卷 4-18页

作者： Yu Lei Zhicong Yin Xi Lu Qiang Zhang Jicheng Gong Bofeng Cai Cilan Cai Qimin Chai Huopo Chen Renjie Chen Shi Chen Wenhui Chen Jing Cheng Xiyuan Chi Hancheng Dai Xiangzhao Feng Guannan Geng Jianlin Hu Shan Hu Cunrui Huang Tiantian Li Wei Li Xiaomei Li Jun Liu Xin Liu Zhu Liu Jinghui Ma Yue Qin Dan Tong Xuhui Wang Xuying Wang Rui Wu Qingyang Xiao Yang Xie Xiaolong Xu Tao Xue Haipeng Yu Da Zhang Ning Zhang Shaohui Zhang Shaojun Zhang Xian Zhang Xin Zhang Zengkai Zhang Bo Zheng Yixuan Zheng Jian Zhou Tong Zhu Jinnan Wang Kebin He Center of Air Quality Simulation and System Analysis Chinese Academy of Environmental PlanningBeijing100041China Center for Carbon Neutrality Chinese Academy of Environmental PlanningBeijing100041China Key Laboratory of Meteorological Disaster Ministry of Education/Joint International Research Laboratory of Climate and Environment Change(ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD)Nanjing University of Information Science&TechnologyNanjing210044China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China Institute for Carbon Neutrality Tsinghua UniversityBeijing100084China Ministry of Education Key Laboratory for Earth System Modelling Department of Earth System ScienceTsinghua UniversityBeijing100084China State Key Joint Laboratory for Environment Simulation and Pollution Control College of Environmental Sciences and Engineering and Center for Environment and HealthPeking UniversityBeijing100871China National Center for Climate Change Strategy and International CooperationBeijing100035China Nansen-Zhu International Research Centre Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing100029China School of Public Health Key Lab of Public Health Safety of the Ministry of Education and Key Lab of Health Technology Assessment of the Ministry of HealthFudan UniversityShanghai200032China School of Economics and Management Beijing University of Chemical TechnologyBeijing100029China Department of Earth System Science University of CaliforniaIrvineCA92697USA National Meteorological Center China Meteorological AdministrationBeijing100081China College of Environmental Sciences and Engineering Peking UniversityBeijing100871China Policy Research Center for Environment and Economy Ministry of Ecology and Environment of the People's Republic of ChinaBeijing100029China Jiangsu Key Laboratory of Atmospheric Environment Monitoring

China is now confronting the intertwined challenges of air pollution and climate *** the high synergies between air pollution abatement and climate change mitigation,the Chinese government is actively promoting synergetic control of these two *** Synergetic Roadmap project was launched in 2021 to track and analyze the progress of synergetic control in China by developing and monitoring key *** Synergetic Roadmap 2022 report is the first annual update,featuring 20 indicators across five aspects:synergetic governance system and practices,progress in structural transition,air pollution and associated weather-climate interactions,sources,sinks,and mitigation pathway of atmospheric composition,and health impacts and benefits of coordinated *** to the comprehensive review presented in the 2021 report,the Synergetic Roadmap 2022 report places particular emphasis on progress in 2021 with highlights on actions in key sectors and the relevant *** milestones include the proportion of non-fossil power generation capacity surpassing coal-fired capacity for the first time,a decline in the production of crude steel and cement after years of growth,and the surging penetration of electric ***,in 2022,China issued the first national policy that synergizes abatements of pollution and carbon emissions,marking a new era for China's pollution-carbon *** changes highlight China's efforts to reshape its energy,economic,and transportation structures to meet the demand for synergetic control and sustainable ***,the country has witnessed a slowdown in carbon emission growth,improved air quality,and increased health benefits in recent years.

关键词： Synergetic roadmap Carbon neutrality Clean air

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Hydration mechanism and mechanical properties of slag-phosphogypsum solid waste-based cementitious composite incorporated silica fume

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Construction and Building Materials 2025年 485卷

作者： Ma, Binhui Li, Yuqi Lan, Tian Huang, Bo Chen, Jiasen Peng, Quan Du, Bicheng Ma, Minglei School of Civil Engineering Hunan University of Science and Technology Xiangtan411201 China National Key Laboratory of Green and Long-Life Road Engineering in Extreme Environment Changsha410114 China Hunan Provincial Key Laboratory of Geotechnical Engineering Stability Control and Health Monitoring Xiangtan411201 China Engineering Research Institute China Construction Eighth Engineering Division Corp Ltd Shanghai200000 China Engineering Testing Center Hunan University of Science and Technology Xiangtan411201 China

A new solid waste-based cementitious composite was proposed in this study. Silica fume was incorporated based on the determination of the optimal mixing ratios of granulated blast furnace slag, phosphogypsum and carbide slag to further improve their material properties. Analysis of the strength and material characterization test results revealed that the addition of silica fume led to increased paste viscosity and reduced system alkalinity. These changes hindered the dispersion of precursor particles and decreased the formation of hydration products, collectively resulting in diminished early-age strength of the cured paste system. However, silica fume consumed excess carbide slag, preventing deterioration of hydration products as well as the precipitation and structural alterations of calcium hydroxide crystals, and avoiding the resultant late-stage strength decline. And because the silica fume fills the internal pores while providing additional nucleation sites for the hydration products, the internal structure of the hardened paste became denser, the hydrated gel is tightly connected to the ettringite, and the number of microcracks and harmful pores was significantly reduced, so that it has a higher late-stage strength. The maximum strength of 28d can reach 57.7 MPa. This solid waste-based cementitious composite does not require a chemical activator and high-temperature curing, which can effectively reduce energy consumption and carbon emissions, be conducive to the green development of the construction industry, and promote the recycling of solid waste. © 2025 Elsevier Ltd

关键词： Debris

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Synergetic roadmap of carbon neutrality and clean air for China

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Environmental Science and Ecotechnology 2023年第4期16卷 1-25页

作者： Qiang Zhang Zhicong Yin Xi Lu Jicheng Gong Yu Lei Bofeng Cai Cilan Cai Qimin Chai Huopo Chen Hancheng Dai Zhanfeng Dong Guannan Geng Dabo Guan Jianlin Hu Cunrui Huang Jianing Kang Tiantian Li Wei Li Yongsheng Lin Jun Liu Xin Liu Zhu Liu Jinghui Ma Guofeng Shen Dan Tong Xuhui Wang Xuying Wang Zhili Wang Yang Xie Honglei Xu Tao Xue Bing Zhang Da Zhang Shaohui Zhang Shaojun Zhang Xian Zhang Bo Zheng Yixuan Zheng Tong Zhu Jinnan Wang Kebin He Ministry of Education Key Laboratory for Earth System Modelling Department of Earth System ScienceTsinghua UniversityBeijing100084China Key Laboratory of Meteorological Disaster Ministry of Education/Joint International Research Laboratory of Climate and Environment Change(ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD)Nanjing University of Information Science&TechnologyNanjing210044China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China Institute for Carbon Neutrality Tsinghua UniversityBeijing100084China State Key Joint Laboratory for Environment Simulation and Pollution Control College of Environmental Sciences and Engineering and Center for Environment and HealthPeking UniversityBeijing100871China Center of Air Quality Simulation and System Analysis Chinese Academy of Environmental PlanningBeijing100012China Center for Carbon Neutrality Chinese Academy of Environmental PlanningBeijing100012China National Center for Climate Change Strategy and International CooperationBeijing100035China Nansen-Zhu International Research Centre Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing100029China College of Environmental Sciences and Engineering Peking UniversityBeijing100871China Institute of Environmental Policy Management Chinese Academy of Environmental PlanningBeijing100012China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control School of Environmental Science and EngineeringCollaborative Innovation Center of Atmospheric Environment and Equipment TechnologyNanjing University of Information Science and TechnologyNanjing210044China Vanke School of Public Health Tsinghua UniversityBeijing100084China Center for Energy and Environmental Policy Research Beijing Institute of TechnologyBeijing100081China China CDC Key Laboratory of Environment and Population Health National Institute of En

It is well recognized that carbon dioxide and air pollutants share similar emission sources so that synergetic policies on climate change mitigation and air pollution control can lead to remarkable co-benefits on greenhouse gas reduction,air quality improvement,and improved *** the context of carbon peak,carbon neutrality,and clean air policies,this perspective tracks and analyzes the process of the synergetic governance of air pollution and climate change in China by developing and monitoring 18 *** 18 indicators cover the following five aspects:air pollution and associated weather-climate conditions,progress in structural transition,sources,inks,and mitigation pathway of atmospheric composition,health impacts and benefits of coordinated control,and synergetic governance system and *** tracking the progress in each indicator,this perspective presents the major accomplishment of coordinated control,identifies the emerging challenges toward the synergetic governance,and provides policy recommendations for designing a synergetic roadmap of Carbon Neutrality and Clean Air for China.

关键词： Carbon neutrality Clean air Synergetic roadmap

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Ultrasound-Assisted the Alkaline Hydrolysis of Fish Scale Gelatin: A Possible Curcumin Delivery System with Increased Water Solubility and Sustained Release

SSRN

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SSRN 2023年

作者： Liu, Jia Li, Haoxin Wan, Aida Wan Mustapha Zhang, Xiaoping The Key Laboratory of Environmental Pollution Monitoring and Disease Control Ministry of Education Guizhou Provincial Engineering Research Center of Ecological Food Innovation School of Public Health Guizhou Medical University Guiyang550025 China Institute of Food Processing Technology Guizhou Academy of Agricultural Sciences Guiyang550006 China Bangi43600 Malaysia Guizhou Fishery Research Institute Guizhou Academy of Agricultural Science Guiyang550025 China

This study sought to investigate the effect of ultrasound-assisted alkaline treatment on the structural characteristics and curcumin loading efficiency in fish scale gelatin (FSG). The results showed that FSG subjected to the ultrasound-assisted alkaline treatment outperformed non-treated FSG, as well as alkali- or ultrasonic-treated FSG in augmenting curcumin loading efficiency (18.36 µg/mL) and protein elution amount (180.87 μg/mL). In contrast to FSG exposed to individual treatments (alkali or ultrasound), the FSG subjected to combined treatment exhibited a notably higher ratio of hydrophobic amino acids (47.51 ± 2.27%). Meanwhile, individual alkali or ultrasonic and ultrasound-assisted alkaline treatments had the capacity to significantly modify the secondary and tertiary structures, as well as the microstructure of FSG. The curcumin-loaded FSG subjected to ultrasound-assisted alkali treatment exhibited a sustained release profile in simulated gastrointestinal conditions. The elucidated outcomes underscore the significant potential of ultrasound-assisted alkali-treated FSG as a promising avenue for facilitating the controlled delivery of bioactive hydrophobic nutrients. © 2023, The Authors. All rights reserved.

关键词： Ultrasonics

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Continuous and comprehensive atmospheric observations in Beijing:a station to understand the complex urban atmospheric environment

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Big Earth Data 2020年第3期4卷 295-321页

作者： Yongchun Liu Chao Yan Zemin Feng Feixue Zheng Xiaolong Fan Yusheng Zhang Chang Li Ying Zhou Zhuohui Lin Yishou Guo Ying Zhang Li Ma Wenshuo Zhou Zhikun Liu Lubna Dada Kaspar Dallenbach Jenni Kontkanen Runlong Cai Tommy Chan Biwu Chu Wei Du Lei Yao Yonghong Wang Jing Cai Juha Kangasluoma Tom Kokkonen Joni Kujansuu Anton Rusanen Chenjuan Deng Yueyun Fu Rujing Yin Xiaoxiao Li Yiqun Lu Yiliang Liu Chaofan Lian Dongsen Yang Weigang Wang Maofa Ge Yuesi Wang Douglas R.Worsnop Heikki Junninen Hong He Veli-Matti Kerminen Jun Zheng Lin Wang Jingkun Jiang Tuukka Petaja Federico Bianchi Markku Kulmala Aerosol and Haze Laboratory Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijingChina Institute for Atmospheric and Earth System Research/Physics Faculty of ScienceUniversity of HelsinkiHelsinkiFinland State Key Joint Laboratory of Environment Simulation and Pollution Control State Environmental Protection Key Laboratory of Sources and Control of Air Pollution ComplexSchool of EnvironmentTsinghua UniversityBeijingChina State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijingChina Department of Environmental Science&Engineering Fudan UniversityShanghaiChina State Key Laboratory for Structural Chemistry of Unstable and Stable Species Beijing National Laboratory for Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijingChina Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Nanjing University of Information Science&TechnologyNanjingChina State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Aerodyne Research Inc. BillericaMassachusettsUSA Institute of Physics University of TartuTartuEstonia Joint International Research Laboratory of Atmospheric and Earth System Sciences School of Atmospheric SciencesNanjing UniversityNanjingChina

Due to profound impact on climate and human health,air quality has attracted attention from all levels of the civil *** key step in the provision of required tools for the society to tackle the complex air quality problem is to characterize it in a comprehensive manner with a long-term ***,we describe a continuous and comprehensive observation station and its accompanying state-ofthe-art instrumentation that was established to investigate the complex urban atmospheric environment in a rapidly developing Chinese *** station,located in downtown Beijing,aims to study air quality by identifying the major atmospheric pollutants and key processes determining their formation and loss mechanisms.A few hundreds of parameters are continuously measured with the state-of-the-art instruments,including trace gas concentrations,aerosol particle size distributions,and mass concentrations,covering aerosol particle chemical composition from molecules to micrometer-sized aerosol *** produced long-term,comprehensive big data with around 1�10^(11)bytes per *** this paper,we provide an overview on the facilities of the station,the instrumentation used,the workflow of continuous observations and examples of results from 2018 to 2019 and a basis for establishing a modern long-term,comprehensive atmospheric urban observation station in other megacities.

关键词： Continuous and comprehensive atmospheric observation air pollution complex photochemical smog haze new particle formation

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