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SSRN 2022年

作者： Dong, Zhaoxin Wang, Shuxiao Xing, Jia Ding, Dian Ge, Xiaodong Zheng, Haotian Jiang, Yueqi An, Jingyu Huang, Cheng Duan, Lei Jiming, Hao State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Tsinghua University Beijing100084 China State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing100084 China Institute for Atmospheric and Earth System Research/Physics Faculty of Science University of Helsinki Helsinki00014 Finland State Environmental Protection Key Laboratory of the Formation and Prevention of Urban Air Pollution Complex Shanghai Academy of Environmental Sciences Shanghai200233 China

NH 3 emission control has proven to be of great importance in reducing PM 2.5 concentrations in China, while how it affects nitrogen/sulfur (N/S) deposition is still unclear. This study developed a new response surface model to quantify the responses of N/S deposition to NH 3 emission control in the Yangtze River Delta, China. NH 3 control was found to have higher efficiency in reducing N/S deposition than NO x and SO 2 alone. The reduced N deposition response to NH 3 emission abatement was higher in the northern part of the YRD region, whereas oxidized N deposition decreased sharply in the region with a low N critical load. An unexpected cobenefit was found in reducing N deposition when we controlled the NH 3 and NO x emissions simultaneously. Compared with the sum effect of individual NH 3 and NO x emission abatement, the extra benefits from the synergy controls accounted for 4.4% (1.23 kg N·ha -1 ·yr -1 ) of the total N deposition, of which 81% came from the oxidized N deposition. The YRD region could receive the largest cobenefits with a 1:1 ratio of NO x :NH 3 emission reduction. The NH 3 emission control also changed the ratio of wet S deposition to dry S deposition and mitigated wet S deposition. These findings highlight the effectiveness of NH 3 emission control and suggest a multiple pollutant control strategy for reducing N/S deposition, which may also be appropriate for other regions in China and other countries. © 2022, The Authors. All rights reserved.

关键词： Ammonia

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Molecular Tracers, Mass Spectral Tracers and Oxidation of Organic Aerosols Emitted from Cooking and Fossil Fuel Burning sources

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SSRN 2022年

作者： Liang, Chengrui Wang, Shuxiao Hu, Ruolan Huang, Guanghan Xie, Jinzi Zhao, Bin Li, Yuyang Zhu, Wenfei Guo, Song Jiang, Jingkun Hao, Jiming State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Tsinghua University Beijing100084 China State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing100084 China College of Environmental Sciences and Engineering Peking University Beijing100871 China

Secondary organic aerosol (SOA) composes a substantial fraction of atmospheric particles, yet the formation and aging mechanism of SOA remains unclear. Here we investigate the initial oxidation of primary organic aerosol (POA) and further aging of SOA in winter Beijing by using aerosol mass spectrometer (AMS) measurements along with offline molecular tracer analysis. ME-2 source apportionment was conducted to capture the characteristic of source-related SOA, and connect them with specific POA. Our results show that urban cooking and fossil fuel burning sources contribute significantly (17% and 20%) to total organic aerosol (OA) in winter Beijing. Molecular tracer analysis by GC×GC reveals that cooking SOA (CSOA) is produced through both photooxidation and aqueous-phase processing, while less oxidized SOA (LO-SOA) is the photooxidation product of fossil fuel burning OA (FFOA) and may experience aqueous-phase aging to form more-oxidized oxygenated OA (MO-OOA). Furthermore, C 3 HO 2 + and C 4 H 5 O 2 + are mass spectral tracers indicating the initial photooxidation, while CH 2 O + and C 2 H 2 O 2 + imply further aqueous-phase aging of OA. Tracer analysis indicates that the formation of diketones dominates the initial photooxidation of POA, while the formation of glyoxal and diacids dominates the further aqueous-phase aging of SOA. © 2022, The Authors. All rights reserved.

关键词： Photooxidation

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Ozone Production Underestimation Over the Tibetan Plateau: The Role of NOxand OVOCs Modeling Uncertainties

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Journal of Geophysical Research: Atmospheres 2025年第10期130卷

作者： Jianshu Wang Haoqi Wang Chong Zhang Yaru Wang Yingjie Zhang Jiacheng Zhou Wanyun Xu Lisa K. Whalley Joanna E. Dyson Eloise J. Slater Chengzhi Xing Suzhen Chi Yumingzi Wang Lifan Wang Xuena Yu Limin Zeng Weili Lin Weixiong Zhao Dwayne E. Heard Shaojie Song Chunxiang Ye State Key Joint Laboratory for Environmental Simulation and Pollution Control College of Environmental Sciences and Engineering Peking University Beijing China State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control Tianjin Key Laboratory of Urban Transport Emission Research College of Environmental Science and Engineering Nankai University Tianjin China Now at Atmospheric Chemistry Department Leibniz Institute for Tropospheric Research (TROPOS) Leipzig Germany Now at School of Ecology and Nature Conservation Beijing Forestry University Beijing China Laboratory of Atmospheric Physico-Chemistry Hefei Institutes of Physical Science Anhui Institute of Optics and Fine Mechanics Chinese Academy of Sciences Hefei China Chinese Academy of Meteorological Science Institute of Atmospheric Composition Beijing China School of Chemistry University of Leeds Leeds UK Key Lab of Environmental Optics & Technology Anhui Institute of Optics and Fine Mechanics Hefei Institutes of Physical Science Chinese Academy of Sciences Hefei China Key Laboratory of Ecology and Environment in Minority Areas Minzu University of China National Ethnic Affairs Commission Beijing China

Chemical production and destruction are key components of the tropospheric ozone (O 3 ) budget, yet significant model spreads exist among various global models in estimating O 3 chemical budgets. Observations in the background atmospheres play a crucial role in validating and evaluating model uncertainties in O 3 chemistry. Here, we conducted comprehensive observations of the O 3 chemical budget at a remote site on the Tibetan Plateau. By comparing the observed O 3 chemical budgets with those simulated by GEOS-Chem, a global chemical transport model, we identified a 60% underestimation in the O 3 production rate by GEOS-Chem. Detailed budget analysis of O 3 and radicals revealed that this discrepancy primarily arose from GEOS-Chem's inadequate representation of nitrogen oxides (NO x ), followed by oxygenated volatile organic compounds (OVOCs). Comparisons with previous studies indicate a widespread model bias in simulating O 3 precursors and their chemical budgets. These findings underscore the challenges in understanding O 3 chemistry linked to our imperfect understanding of the atmospheric fate of NO x and OVOCs. Field observations serve as benchmarks for evaluating uncertainties in GEOS-Chem's simulation of the O 3 chemical budget GEOS-Chem underestimates O 3 chemical production by 60% compared with observations Model biases in O 3 chemistry are largely driven by model underestimations of NO x with significant contributions from OVOCs Tropospheric ozone (O 3 ) plays a crucial role in air quality, climate change, and ecosystem health. The estimate and prediction for tropospheric O 3 levels and variabilities are heavily dependent on our understanding of the O 3 chemical budgets. However, significant simulation spreads of tropospheric O 3 photochemistry exist among various chemical transport models, indicating an incomplete scientific understanding of O 3 chemistry. This study compares the observed O 3 chemical budget with predictions from the GEOS-Chem model, and a

关键词： tropospheric ozone atmospheric photochemistry reactive nitrogen carbonyl compounds chemical transport model

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Coordinated control of Fine-Particle and Ozone pollution by the Substantial Reduction of Nitrogen Oxides

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Engineering 2022年第8期8卷 13-16页

作者： Biwu Chu Yan Ding Xiang Gao Junhua Li Tingyu Zhu Yunbo Yu Hong He State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China University of the Chinese Academy of Sciences Beijing 100049China Chinese Research Academy of Environmental Sciences Beijing 100012China State Environmental Protection Engineering Center for Coal-Fired Air Pollution Control Zhejiang UniversityHangzhou 310027China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China

*** In recent years,the air quality in China has improved *** many cities,however,the concentration of fine particulate matter(PM_(2.5))remains higher than the secondary-level national ambient air quality standard(NAAQS level-2,35μg·m^(-3),GB3095-2012[1])and much higher than the first-level NAAQS(15μg·m^(-3),GB3095-2012[1])and the World Health Organization(WHO)air quality guidelines(5μg·m^(-3)).

关键词： pollution Ozone ambient

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Characteristics of typical IVOCs and SVOCs in Shanghai during China International Import Expo episode

Characteristics of typical IVOCs and SVOCs in Shanghai durin...

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第二十七届大气污染防治技术研讨会

作者： Taikui An Yingjie Li State Environmental Protection Key Laboratory of Formation and Prevention of Urban Air Pollution Complex Shanghai Academy of Environmental Sciences

To ensure good air quality during the China International Import Expo（CIIE） episode, a series of emission-reduction measures were implemented in Shanghai and its neighboring regions. However, little information has been reported on the impacts of these measures on atmospheric I/SVOCs. To assess the effectiveness of these temporary measures, this paper explored four typical categories of I/SVOCs, including alkanes, PAHs, benzothiazole（BTH） and chlorobenzenes（CBs）, at an urban site of Shanghai before and during two CIIE episodes（2019 and 2020;non-CIIE versus CIIE）;their secondary organic aerosol（SOA） production was estimated based on the photochemical-age-based parameterization;and five possible emission sources of I/SVOCs was analyzed by positive matrix factorization（PMF）.Average concentrations of the most concerned alkanes and PAHs during both two CIIE periods decreased by ～41% and ～17%, respectively, compared to non-CIIE periods. However, during CIIE-2020, the concentrations of CBs and BTH didn't decrease as expected. The SOA production from alkanes, PAHs and BTH together was 671±446 ng/m under atmospheric conditions, and significant secondary organic aerosol（SOA） formation potential of dimethylnaphthalenes and BTH was firstly reported. The source apportionment suggested that gasoline-vehicles（31.5%）, life-related sources（21.6%）, diesel-related emissions（20.8%）, industrial sources（18.6%） and ship emissions（7.5%） were important source of I/SVOCs, especially for the non-ignorable contribution of life-related sources. Our results provide valuable insights into the effectiveness of the measures implemented during the CIIE and highlight more speciated I/SVOCs and life-related sources should be considered for further research and policy action.

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On the optimality of Kalman filter for fault detection 4

On the optimality of Kalman filter for fault detection

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4th IEEE International Conference on Digital Twins and Parallel Intelligence, DTPI 2024

作者： Zhou, Jinming Zhu, Yucai Yang, Chao Zhu, Yun Yin, Feng Zhejiang University State Key Laboratory of Industrial Control Technology College of Control Science and Engineering Hangzhou310027 China Zhejiang University State Key Lab of Clean Energy Utilization State Environmental Protection Center for Coal-Fired Air Pollution Control Hangzhou310027 China Zhejiang Baima Lake Laboratory Co. Ltd Hangzhou310051 China

ISBN: (纸本)9798350349252

Kalman filter is widely used for residual generation in fault detection. It leads to optimality in fault detection using some performance indices and also leads to statistically sound residual evaluation and threshold setting. This paper shows that these nice features do not necessarily imply an optimal fault detection performance. Based on a performance index related to fault detection rate and false alarm rate, several occasions where Kalman filter should not be used are pointed out;further the residual evaluation and threshold setting are discussed, in which it is pointed out that in stochastic setting an optimal statistical test of Kamlan filter is not related to optimality of commonly used detection performance indicators. The theoretical analysis is verified through Monte Carlo simulations and Tennessee Eastman process (TEP) dataset. © 2024 IEEE.

关键词： Kalman filters

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Practice and Thinking on Current Planning environmental Impact Assessment of Transmission and Transformation Power Grid in Jiangsu Province

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Meteorological and environmental Research 2014年第1期5卷 44-48页

作者： Wang Sheng Wang Huimin Zhu Fahua Qiu Lei Liu Gang State Key Laboratory of Hydrology-Water Resource and Hydraulic Engineering Hohai University State Power Environmental Protection Research Institute State Environmental Protection Key Laboratory of Atmospheric Physical Modeling and Control of Air Pollution

The planning environmental impact assessment （EIA） of transmission and transformation power grid at levels of 500 and 220 kV had been finished completely in the 13 municipalities of Jiangsu Province by the end of 2012, which played important roles in guiding and planning the following transmission and transformation projects in environmental protection. In this paper, through the detail analysis on the objective and significance of the planning EIA of transmission and transformation power grid, legal basis and planning EIA practices, some suggestions and thinking about the planning EIA of transmission and transformation power grid were put forward.

关键词： Jiangsu Province Power grid Planning environmental impact assessment Current status China

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The role of geographic distances in green industrial pilot policies evaluation: A sustainability transition perspective

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environmental Science and pollution Research 2024年第50期31卷 60485-60502页

作者： Chen, Luyi Chang, Yue Ruan, Xinhui Shanghai Research Center for Reform and Development of State-Owned Assets and State-Owned Enterprises Shanghai China Zhejiang Development & amp Planning Institute Zhejiang Hangzhou310005 China State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing100085 China State Key Lab of Clean Energy Utilization State Environmental Protection Engineering Center for Coal-Fired Air Pollution Control Zhejiang University 38 Zheda Road Hangzhou310027 China

Green industrial policies (GIPs) aim to promote the adoption of green technology within a sustainability framework. While previous evaluations of GIP have focused more on the policy itself and the impacts within the policy boundaries, this paper further introduces the geographical factor to analyze the impact of different spatial geographic distances on implementing GIP. By integrating geographic distances into a spatial difference-in-differences analysis to assess the effects of municipal green industry policies (referred to as green industry pilot policies in this paper) enacted in 11 cities in China from 2006 to 2010, we find that these policies not only improve environmental and economic outcomes in targeted regions but also have spillover effects that may affect neighboring areas negatively, highlighting the importance of geographic considerations. The effectiveness of green industrial policies varies across cities, influenced by local socio-technical systems and regional characteristics such as infrastructure and information technology. These findings suggest that policy impacts are complex and multifaceted, requiring a comprehensive understanding of geographic interdependencies. By incorporating geographic factors, this research contributes to sustainability transition theory by offering insights into the spatial and temporal dynamics of socio-technical systems. The results underscore the need for policymakers to consider spatial-temporal aspects and potential secondary effects on adjacent regions when designing and implementing green industrial policies. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Green development

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Experimental Investigation of Particles Dynamics and Solid-Liquid Mixing Uniformity in a Stirred Tank

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Fluid Dynamics & Materials Processing 2024年第11期20卷 2585-2602页

作者： Kai Yang Qinwen Yao Yingshan Li Wanchang Chen Saleh Khorasani Hua Wang Qingtai Xiao State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and TechnologyKunming650093China Faculty of Metallurgical and Energy Engineering Kunming University of Science and TechnologyKunming650093China Department of Mechanical Engineering Faculty of EngineeringUrmia University of TechnologyUrmia***Iran State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control Ministry of Ecology and EnvironmentWuhan430081China

Particle suspension and deposition dynamics are significant factors affecting the level of mixing quality in solidliquid two-phase stirring processes. In general, the ability to increase the suspension rate and minimize depositioneffects is instrumental in improving the uniformity of particle mixing, accelerating the reaction of involved solidliquid two-phase, and improving the efficiency of production operations. In this work, suspension and depositionindicator based on the Betti number and a uniformity indicator are introduced and obtained by means of imageanalysis. The influence of the blade type, rotation speed, blade diameter and blade bottom height on the particlesuspension/deposition characteristics and mixing uniformity are carefully investigated. The experimental resultsshow that the two-phase motion region can be divided into three local regions, including a bottom motion alongthe wall, a low-degree suspension region under the blade and a high suspension region above the blade. The bestdegree of particle suspension is attained by the double-inclined blade paddle at a speed of 270 r/min, a paddlediameter ratio of 0.414, and a height-diameter ratio of 0.086. The double-inclined blade paddle has a better effecton promoting particle suspension and solid-liquid two-phase mixing uniformity.

关键词： Solid-liquid particle suspension mixing uniformity Betti number paddle types

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我国大气污染治理的进展与生态文明时代的机遇和挑战

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Engineering 2020年第12期6卷 198-216页

作者：鲁玺张少君邢佳王韵杰陈文会丁点吴烨王书肖段雷郝吉明 State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex

中国过去的经济增长在很大程度上依赖于化石燃料消费,因此造成了严重的空气污染问题。解决经济增长与污染改善之间的矛盾已成为我国发展生态文明的关键。本文分析了我国近30年来大气污染治理的历程,指明了从排放控制到质量管理这一战略... 详细信息

中国过去的经济增长在很大程度上依赖于化石燃料消费,因此造成了严重的空气污染问题。解决经济增长与污染改善之间的矛盾已成为我国发展生态文明的关键。本文分析了我国近30年来大气污染治理的历程,指明了从排放控制到质量管理这一战略转变的重要意义。"十一五"期间,二氧化硫(SO)排放总量控制遏制了中国酸雨问题日益恶化的态势。2013年以来,我国制定了以降低细颗粒物(PM)浓度为大气污染治理的主要目标,开展了针对多个行业、多种大气污染物的综合治理行动,标志着中国向以空气质量为导向的战略转变。针对目前日益加剧的臭氧(O)污染,急需科学厘清PM和O污染控制之间复杂的相互作用关系,实施有效的污染协同控制策略。作为成功建设生态文明的关键性指标,中国空气质量的根本改善要求今后中国能源系统深度降碳,并且能够寻求更多的协同途径,从而同时改善空气质量和应对气候变化。

关键词：大气污染治理生态文明细颗粒物低碳发展臭氧

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