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Distribution and bioavailability of mercury in size-fractioned atmospheric particles around an ultra-low emission power plant in Southwest china

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Journal of Environmental sciences 2024年第4期138卷 141-152页

作者： Wei Zhang Jinjuan Li Hao qiu Xingqiang Guo Zhijun Fei Yi Xing Deliang Yin College of Resources and Environmental Engineering Guizhou UniversityGuiyang 550025China College of Resources and Environmental Engineering Guizhou Institute of TechnologyGuiyang 550003China Key Laboratory of Karst Georesources and Environment(Guizhou University) Ministry of EducationGuiyang 550025China School of Energy and Environmental Engineering University of Science&Technology BeijingBeijing 100083China

Ultra-low emission(ULE)technology retrofits significantly impact the particulate-bound mercury(Hg)emissions from coal-fired power plants(CFPPs);however,the distribution and bioavailability of Hg in size-fractioned particulate matter(PM)around the ULE-retrofitted CF-PPs are less ***,total Hg and its chemical speciation in TSP(total suspended particles),PM_(10)(aerodynamic particle diameter≤10μm)and PM_(2.5)(aerodynamic particle diameter≤2.5μm)around a ULE-retrofitted CFPP in Guizhou Province were *** PM_(2.5)concentration was higher around this ULE-retrofitted CFPP than that in the intra-regional urban cities,and it had higher mass Hg concentration than other sizefractioned *** Hg concentrations in PM had multifarious sources including CFPP,vehicle exhaust and biomass combustion,while they were significantly higher in autumn and winter than those in other seasons(Patmospheric PM-bound Hg had lower residual fractions(4.%).Mass concentrations of exchangeable,HCl-soluble,elemental,and residual Hg in PM_(2.5)were higher than those in other size-fractioned PM,and were markedly elevated in autumn and winter(Patmospheric PM-bound Hg around the ULE-retrofitted CFPP tends to accumulate in finer PM,and has higher bioavailable fractions,while has potential transformation between chemical speciation.

关键词： Size-fractioned particles Mercury Chemical speciation Coal-fired power plant Ultra-low emission

Future changes in precipitation and water availability over the Tibetan Plateau projected by CMIP6 models constrained by climate sensitivity

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atmospheric and Oceanic Science Letters 2024年第5期17卷 40-46页

作者： Hui qiu Tianjun Zhou Liwei Zou Jie Jiang Xiaolong Chen Shuai Hu State Key Laboratory of Numerical Modeling for atmospheric sciences and Geophysical Fluid Dynamics Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina University of the chinese Academy of sciences BeijingChina

Precipitation projections over the Tibetan Plateau(TP)show diversity among existing studies,partly due to model *** to develop a reliable projection remains ***,based on the IPCC AR6–assessed likely range of equilibrium climate sensitivity(ECS)and the climatological precipitation performance,the authors constrain the CMIP6(phase 6 of the Coupled Model Intercomparison Project)model projection of summer precipitation and water availability over the *** best estimates of precipitation changes are 0.24.0.25,and 0.4. mm d^(−1)(5.9%,6.1%,and 11.2%)under the Shared Socioeconomic Pathway(SSP)scenarios of SSP1–2.6,SSP2–4.5,and SSP5–8.5 from 2050–2099 relative to 1965–2014.*** corresponding constrained projections of water availability measured by precipitation minus evaporation(P–E)are 0.10,0.09,and 0.22 mm d^(−1)(5.7%,4.9%,and 13.2%),*** increase of precipitation and P–E projected by the high-ECS models,whose ECS values are higher than the upper limit of the likely range,are about 1.7 times larger than those estimated by constrained ***,there is a larger increase in precipitation and P–E over the eastern TP,while the western part shows a relatively weak difference in precipitation and a drier trend in P–*** wetter TP projected by the high-ECS models resulted from both an approximately 1.2–1.4.times stronger hydrological sensitivity and additional warming of 0.6℃–1.2℃ under all three scenarios during 2050–*** study emphasizes that selecting climate models with climate sensitivity within the likely range is crucial to reducing the uncertainty in the projection of TP precipitation and water availability changes.

关键词： Tibetan plateau Climate sensitivity Precipitation projection Water availability projection

Alteration of the health effects of bioaerosols by chemical modification in the atmosphere:A review

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Fundamental Research 2024年第3期4卷 463-470页

作者： Ailin Li Xinghua qiu Xing Jiang Xiaodi Shi Jinming Liu Zhen Cheng Qianqian Chai Tong Zhu State Key Joint Laboratory for Environmental Simulation and Pollution Control College of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China

Bioaerosols are a subset of important airborne particulates that present a substantial human health hazard due to their allergenicity and *** reactions in atmospheric processes can significantly influence the health hazard presented by bioaerosols;however,few studies have summarized such alterations to bioaerosols and the mechanisms *** this paper,we systematically review the chemical modifications of bioaerosols and the impact on their health effects,mainly focusing on the exacerbation of allergic diseases such as asthma,rhinitis,and ***,nitration,and oligomerization induced by hydroxyl radicals,ozone,and nitrogen dioxide are the major chemical modifications affecting bioaerosols,all of which can aggravate allergenicity mainly through immunoglobulin E *** processes can even interact with climate change including the greenhouse effect,suggesting the importance of bioaerosols in the future implementation of carbon neutralization *** summary,the chemical modification of bioaerosols and the subsequent impact on health hazards indicate that the combined management of both chemical and biological components is required to mitigate the health hazards of particulate air pollution.

关键词： Bioaerosols Allergenicity Chemical modification Airpollution Climate change

PRINCIPLE OF REMOTE SENSING OF atmospheric AEROSOL SIZE DISTRIBUTION BY COMBINED SOLAR EXTINCTION AND FORWARD SCATTERING METHOD AND NUMERICAL EXPERIMENT

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Science in china,Ser.B 1982年第7期25卷 745-755页

作者：吕达仁周秀骥邱金桓 Institute of atmospheric physics Academia Sinica beijing

In this paper, the principle of inverting aerosol size distribution by solar spectral extinc-tion-forward scattering measurements is proposed and analyzed. Two methods of inversion——the segmental inversion and the combined one——are presented. Numerical experimentsshow that this method is quite successful in improving the accuracy of retrieved aerosolsize distribution in both smaller part (r1μm) of aerosolsize ranges.

关键词： PRINCIPLE OF REMOTE SENSING OF atmospheric AEROSOL SIZE DISTRIBUTION BY COMBINED SOLAR EXTINCTION AND FORWARD SCATTERING METHOD AND NUMERICAL EXPERIMENT EM

Projected near-surface wind speed and wind energy over Central Asia using dynamical downscaling with bias-corrected global climate models

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Advances in Climate Change Research 2024年第4期15卷 669-679页

作者： Jin-Lin ZHA Ting CHUAN Yuan qiu Jian WU De-Ming ZHAO Wen-Xuan FAN Yan-Jun LYU Hui-Ping JIANG Kai-Qiang DENG Miguel ANDRES-MARTIN Cesar AZORIN-MOLINA Deliang CHEN Key Laboratory of atmospheric Environment and Processes in the Boundary Layer over the Low-Latitude Plateau Region Department of Atmospheric ScienceYunnan UniversityKunming 650091China Key Laboratory of Regional Climate and Environment for Temperate East Asia Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China Center for Energy&Environmental Policy Research Beijing Institute of Technology Beijing 100081China Key Laboratory of Regional Sustainable Development Modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China International Research Center of Big Data for Sustainable Development Goals Beijing 100094China School of atmospheric sciences Sun Yat-sen Universityand Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China Centro de Investigaciones Sobre Desertificacion Consejo Superior de Investigaciones Cientificas(CIDECSIC-UV-Generalitat Valenciana)ClimateAtmosphere and Ocean Laboratory(Climatoc-Lab)Moncada 46113Spain Regional Climate Group.Deparment of Earth sciences University of GothenburgGothenburg 40530Sweden

Wind energy development in Central Asia can help alleviate drought and fragile ***,current studies mainly used the global climate models(GCMs)to project wind speed and *** simulated biases in GCMs remain prominent,which induce a large uncertainty in the projected *** reduce the uncertainties of projected near-surface wind speed(NSW)and better serve the wind energy development in Central Asia,the Weather Research and Forecasting(WRF)model with bias-corrected GCMs was *** with the outputs of GCMs,dynamical downscaling acquired using the WRF model can better capture the high-and low-value centres of NSWS,especially those of Central Asia's ***,the simulated NSWS bias was also *** future changes in wind speed and wind energy,under the Representative Concentration Pathway 4.5(RCP4.5)scenario,NSWS during 2031-2050 is projected to decrease compared with that in *** magnitude of NSwS reduction during 2031-2050 willreach 0.1 m s^(-1).and the maximum reduction is projected to occur over the central and western regions(>0.2 m s^(-1)).Furthermore,future wind power density(WPD)can reveal nonstationarity and strong volatility,although a downward trend is expected during *** addition,the higher frequency of wind speeds at the turbine hub height exceeding 3.0 m s^(-1)can render the plain regions more suitable for wind energy development than the mountains from 2031 to *** study can serve as a guide in gaining insights into future changes in wind energy across Central Asia and provide a scientific basis for decision makers in the formulation of policies for addressing climate change.

关键词： Near-surface wind speed Wind power density Dynamical downscaling Central Asia WRF

IPCC AR6相关甲烷研究进展分析及其对中国的启示

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气候变化研究进展 2024年第3期20卷 327-336页

作者：袁佳双邱爽中国气象局国家气候中心北京100081

工业化以来,甲烷(CH_(4.)造成的温升约0.5℃,减少CH_(4.排放对于稳步实现《巴黎协定》温升目标至关重要。IPCC第六次评估报告(IPCC AR6)显示,1960—2019年,CH_(4.对总有效辐射强迫(ERF)的相对贡献为11%,对比1750—2019年,CH_(4.对总ERF... 详细信息

工业化以来,甲烷(CH_(4.)造成的温升约0.5℃,减少CH_(4.排放对于稳步实现《巴黎协定》温升目标至关重要。IPCC第六次评估报告(IPCC AR6)显示,1960—2019年,CH_(4.对总有效辐射强迫(ERF)的相对贡献为11%,对比1750—2019年,CH_(4.对总ERF的相对贡献下降,这与20世纪70年代以来大气中CH_(4.浓度增长率发生变化有关。预估显示,到2050年全球CH_(4.排放有望实现高达4.%的减幅,届时将降低变暖峰值水平,并可有效减少全球表面臭氧,有助于改善空气质量。报告也指出,CH_(4.的源汇还存在很大不确定性,准确量化CH_(4.源汇并归因仍具有挑战性。随着我国发布《甲烷排放控制行动方案》,学界需加强CH_(4.源汇估算的研究,并进一步加强卫星监测大气CH_(4.浓度的反演算法,为我国CH_(4.相关管控政策提供数据支撑。

关键词： IPCC AR6 甲烷(CH_(4.) 减排潜力

DETECTING TROPICAL CYCLONE WATER VAPOR TRANSPORTATION WITH THE TRMM AND ADVANCED MICROWAVE SOUNDING UNIT(AMSU)

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DETECTING TROPICAL CYCLONE WATER VAPOR TRANSPORTATION WITH T...

拒马河流域河流沉积物与土壤重金属含量及风险评价

作者： WangXin~1 FangXiang~(1,2) qiu Hong~1 Zhu Yuanjing~2 1 National Satellite Meteorological Center of china Meteorological Administration, beijing,china,100081 2 Department of {4. Science,School of physics,Peking University, beijing,china,100871

The AMSU-B data contain the vertical distribution of the retrieved water vapor from satellite brightness temperature. The tropical cyclone Matsa event in 2005 formed from the northwest pacific is analysised by combining the AMSU-B water vapor fields with the latent *** show the combination the TRMM latent heating data in the heavy precipitation area around TC,we find heat release is one of the most important factors to impact TC intensity,especially to the long-life and land load *** there is a time delay between the low level water vapor convergence and the middle layer latent heat,which will improve the real-time forecast of tropical cyclones.

关键词： Index Terms—One two three four five

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环境科学 2024年第5期45卷 2962-2970页

作者：韩双宝袁磊张秋霞郑焰李甫成哈尔滨工业大学环境学院哈尔滨150090 中国地质调查局水文地质环境地质调查中心保定071051 南方科技大学环境科学与工程学院深圳518055

拒马河流域河流沉积物与土壤存在污染下游北京市和雄安新区生态环境的风险,为此,沿源头至张坊出山口采集河流沉积物与土壤样品,将样品进一步分为干流底泥(29件)、河岸土壤(27件)和农田土壤(26件)这3种类型,采用富集因子法和潜在生态风... 详细信息

拒马河流域河流沉积物与土壤存在污染下游北京市和雄安新区生态环境的风险,为此,沿源头至张坊出山口采集河流沉积物与土壤样品,将样品进一步分为干流底泥(29件)、河岸土壤(27件)和农田土壤(26件)这3种类型,采用富集因子法和潜在生态风险指数法开展了重金属富集特征与生态风险评价研究.结果表明,研究区河流沉积物与土壤Cd、Hg、Pb、Zn和Cu含量均值高于白洋淀底泥与河北省表层土壤含量均值,As、Cr和Ni含量则偏低.各重金属污染程度由高到低为:Cd>Hg>Pb>Zn>Cu>Cr>Ni>As,生态风险综合指数显示农田土壤和河岸土壤以轻微风险为主,其次为中度;干流底泥潜在生态风险则以中度、重度和严重为主,分别占比为35.5%、24.1%和24.1%,主要贡献因子为Cd和Hg.多元统计分析结果表明Cd、Pb、Zn和Cu主要污染源为工矿活动;Cr、Ni和As则主要由成土母岩风化控制,As还受农业活动等的影响;Hg则由工矿活动、母岩风化和大气降尘等复合污染源控制.总体上,研究区土壤重金属风险整体处于轻微等级,但台峪-司各庄-蓬头河段干流底泥中存在Cd等重金属明显富集的现象,环境监测、河道清淤与治理应以该河段为重点.

关键词：拒马河流域河流沉积物与土壤重金属来源解析生态风险

An overview for monitoring and prediction of pathogenic microorganisms in the atmosphere

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Fundamental Research 2024年第3期4卷 430-441页

作者： Jianping Huang Danfeng Wang Yongguan Zhu Zifeng Yang Maosheng Yao Xiaoming Shi Taicheng An Qiang Zhang Cunrui Huang Xinhui Bi Jiang Li Zifa Wang Yongqin Liu Guibing Zhu Siyu Chen Jian Hang Xinghua qiu Weiwei Deng Huaiyu Tian Tengfei Zhang Tianmu Chen Sijin Liu Xinbo Lian Bin Chen Beidou Zhang Yingjie Zhao Rui Wang Han Li Collaborative Innovation Center for Western Ecological Safety College of Atmospheric SciencesLanzhou UniversityLanzhou 730000China Research Center for Eco-Environmental sciences Chinese Academy of SciencesBeijing 100085China National Clinical Research Center for Respiratory Disease Guangzhou Institute of Respiratory HealthFirst Affiliated Hospital of Guangzhou Medical UniversityState Key Laboratory of Respiratory Disease(Guangzhou Medical University)Guangzhou 510230China College of Environmental sciences and Engineering Peking UniversityBeijing 100871China china CDC Key Laboratory of Environment and Population Health National Institute of Environmental HealthChinese Center for Disease Control and PreventionBeijing 100021China Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Ministry of Education Key Laboratory for Earth System Modeling Department of Earth System ScienceTsinghua UniversityBeijing 100084China Vanke School of Public Health Tsinghua UniversityBeijing 100084China State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China State Key Laboratory of atmospheric Boundary Layer physics and atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Center for Pan-third Pole Environment Lanzhou UniversityLanzhou 730000China College of atmospheric sciences Lanzhou UniversityLanzhou 730000China School of atmospheric sciences Sun Yat-sen Universityand Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 510640

Corona virus disease 2019(COVID-19)has exerted a profound adverse impact on human *** have demonstrated that aerosol transmission is one of the major transmission routes of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).Pathogenic microorganisms such as SARS-CoV-2 can survive in the air and cause widespread infection among *** monitoring of pathogenic microorganism transmission in the atmosphere and accurate epidemic prediction are the frontier guarantee for preventing large-scale epidemic *** of pathogenic microorganisms in the air,especially in densely populated areas,may raise the possibility to detect viruses before people are widely infected and contain the epidemic at an earlier *** multi-scale coupled accurate epidemic prediction system can provide support for governments to analyze the epidemic situation,allocate health resources,and formulate epidemic response *** review first elaborates on the effects of the atmospheric environment on pathogenic microorganism transmission,which lays a theoretical foundation for the monitoring and prediction of epidemic ***,the monitoring technique development and the necessity of monitoring pathogenic microorganisms in the atmosphere are summarized and ***,this review introduces the major epidemic prediction methods and highlights the significance to realize a multi-scale coupled epidemic prediction system by strengthening the multidisciplinary cooperation of epidemiology,atmospheric sciences,environmental sciences,sociology,demography,*** summarizing the achievements and challenges in monitoring and prediction of pathogenic microorganism transmission in the atmosphere,this review proposes suggestions for epidemic response,namely,the establishment of an integrated monitoring and prediction platform for pathogenic microorganism transmission in the atmosphere.

关键词： Aerosol transmission Epidemic monitoring methods Epidemic prediction modelsEpidemic response Multidisciplinary cooperation