以煤为燃料的发电厂附近观测到的城市空气污染极值与人为和气象驱动因素综合影响的关系分析

IF 4.7 2区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Environmental Development Pub Date : 2024-10-17 DOI:10.1016/j.envdev.2024.101095
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引用次数: 0

摘要

在本文中,我们评估了气象驱动因素(取自观测记录和模型输出数据集)和人为污染(取自能源生产记录)的变化对黑山和塞尔维亚以煤为燃料的热电厂(TPPs)附近主要是冬季城市颗粒物(PM)浓度极端观测值的影响。我们使用小波变换分析、依赖性分析和气候条件平均值分析,研究了热电厂附近城市空气污染极端值的时间动态、其变化与空气中二氧化硫和二氧化氮浓度观测值的吻合程度,以及可吸入颗粒物变化与几种可能的气象和人为因素的关系。我们发现,如果污染仅仅是由热电联产排放造成的,那么城市地区的可吸入颗粒物变化很可能是由可吸入颗粒物-二氧化硫/二氧化氮重合造成的,这种重合出现在二氧化硫/二氧化氮热电联产排放转化为可吸入颗粒物所需的 2 到 3 小时时滞之后。如果除了 TPP 的产生之外,还有其他原因导致 PM 的变化,我们发现 PM-SO2/NO2 的相关性会在几小时到几天的时间范围内出现。在我们的分析中,只有行星边界层高度(PBLH)的变化与 PBLH 水平低于 300 米时 PM 值达到极值的驱动力相吻合。根据这些发现,我们建议将样本中的可吸入颗粒物极端事件视为有先决条件的复合事件,其中全氟辛烷磺酸和城市供热排放为可吸入颗粒物极端事件提供了先决条件,而行星边界层高度则是此类事件的主要气象驱动因素。
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Analysis of the dependence of the observed urban air pollution extremes in the vicinity of coal fuelled power plants on combined effects of anthropogenic and meteorological drivers
In this paper we assessed effects of changes of meteorological drivers, taken from datasets of observational records and modelling outputs, and human-made pollution, derived from records of energy production, on the mainly wintertime extreme observed values of urban particulate matter (PM) concentrations in the relative vicinity of coal fuelled thermoelectric power plants (TPPs) in Montenegro and Serbia. We used wavelet transform analysis, together with the dependency analysis and analysis of averages of climatic conditions, to study temporal dynamics of urban air pollution extremes in the vicinity of TPPs, the coincidence of their changes with observed levels of SO2 and NO2 concentrations in the air, and dependence of PM changes on several possible meteorological and anthropogenic drivers. We found that PM variations in urban areas are most probably caused by PM-SO2/NO2 coincidences that appear after a 2- to 3-h time lags needed for transformation of SO2/NO2 TPP emissions into PM particles, if pollution is caused by TPP emissions alone. When other causes of PM variations than the TPP production exist, we found that PM-SO2/NO2 correlations appear at time ranges from several hours to several days. In our analysis only the changes in the planetary boundary layer height (PBLH) coincided with the drive to extremes in PM values, at PBLH levels lower than 300m. Following these findings, we suggested that PM extremes in our sample could be viewed as preconditioned compound events, where TPP and urban heating emissions provide preconditions for PM extremes and PBLH serves as a major meteorological driver to such events.
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来源期刊
Environmental Development
Environmental Development Social Sciences-Geography, Planning and Development
CiteScore
8.40
自引率
1.90%
发文量
62
审稿时长
74 days
期刊介绍: Environmental Development provides a future oriented, pro-active, authoritative source of information and learning for researchers, postgraduate students, policymakers, and managers, and bridges the gap between fundamental research and the application in management and policy practices. It stimulates the exchange and coupling of traditional scientific knowledge on the environment, with the experiential knowledge among decision makers and other stakeholders and also connects natural sciences and social and behavioral sciences. Environmental Development includes and promotes scientific work from the non-western world, and also strengthens the collaboration between the developed and developing world. Further it links environmental research to broader issues of economic and social-cultural developments, and is intended to shorten the delays between research and publication, while ensuring thorough peer review. Environmental Development also creates a forum for transnational communication, discussion and global action. Environmental Development is open to a broad range of disciplines and authors. The journal welcomes, in particular, contributions from a younger generation of researchers, and papers expanding the frontiers of environmental sciences, pointing at new directions and innovative answers. All submissions to Environmental Development are reviewed using the general criteria of quality, originality, precision, importance of topic and insights, clarity of exposition, which are in keeping with the journal''s aims and scope.
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