Very unhealthy air quality is consistently connected with numerous diseases. Appropriate extreme analysis and accurate predictions are in rising demand for exploring potential linked causes and for providing suggestions for the environmental agency in public policy strategy. This paper aims to model the spatial and temporal pattern of both moderate and very poor PM10 concentrations collected from 342 representative monitors distributed throughout mainland Spain from 2017 to 2021. We firstly propose and compare a series of Bayesian generalized extreme models of annual maxima PM10 concentrations, including both the fixed effect as well as the spatio-temporal random effect with the Stochastic Partial Differential Equation approach and a lag-one dynamic auto-regressive component. The similar and different effects of interrelated factors are identified through a joint Bayesian model of annual mean and annual maxima PM10 concentrations, which may bring the power of statistical inference of body data to the tail analysis with implementation in the faster and more accurate Integrated Nested Laplace Approximation (INLA) algorithm with respect to MCMC. Under WAIC, DIC and other criteria, the best model is selected with good predictive ability based on the first four-year data for training and the last-year data for testing. The findings are applied to identify the hot-spot regions with extremely poor quality using excursion functions specified at the grid level. It suggests that the community of Madrid and the northwestern boundary of Spain are likely to be exposed to severe air pollution simultaneously exceeding the warning risk threshold. The joint model also provides evidence that certain predictors (precipitation, vapour pressure and population density) influence comparably while the other predictors (altitude and temperature) impact oppositely in the different scaled PM10 concentrations.
翻译:适当的极端分析和准确的预测正日益要求探索潜在关联原因,并在公共政策战略中向环境机构提出建议。本文的目的是模拟2017年至2021年在西班牙大陆各地分布的342个代表监测器收集到的中度和极差PM10浓度的空间和时间模式。我们首先提出并比较一系列巴耶西亚年度最大PM10浓度普遍极端模型,包括固定效应以及与Stochasteste-al-stopal Exparental Explication Properational Professional Professional Processional Professional Professional Professional Professional Professional Processional Processional Processional Processional Processional Profective the the the best pressive pressive resulational lability recessional cales on firstal lax the firstal exal legilal gradual gradual trainal train real real real dal deal real real deal dal dal. laction. exal dal dal dal laction. laction. lactions exal ex exal exal exal dal laction. exal exal exmal dismal dismal dismal laction. lactional lautal laction. lactional lactional dismal dismal laction. lautal lautal lactions laction. 我们al 提供 提供 lactional laction. 提供 在四年级计算中, 数据中, 数据中, 提供 提供 提供 提供 提供 提供 提供 提供 提供 提供 提供 提供 提供 提供 提供 提供 提供的模型, 和某些精确数据, 数据, 提供的模型, 和精确级的模型的模型的模型,提供的模型,在最低级的精确数据, 和精确级的模型,