Spatially heterogeneous relationships of PM2. 5 concentrations with natural and land use factors in the Niger River Watershed, West Africa

L Zhou, T Wu, L Pu, M Meadows, G Jiang… - Journal of Cleaner …, 2023 - Elsevier
Identifying the main factors influencing PM 2.5 concentrations is critical for the control and
management of elevated atmospheric pollution. Although the impact of natural and land use …

Estimation and inference in spatially varying coefficient models

J Mu, G Wang, L Wang - Environmetrics, 2018 - Wiley Online Library
Spatially varying coefficient models are a classical tool to explore the spatial nonstationarity
of a regression relationship for spatial data. In this paper, we study the estimation and …

Exploring heterogeneity and dynamics of meteorological influences on US PM2. 5: A distributed learning approach with spatiotemporal varying coefficient models

L Wang, G Wang, AS Gao - Spatial Statistics, 2024 - Elsevier
Particulate matter (PM) has emerged as a primary air quality concern due to its substantial
impact on human health. Many recent research works suggest that PM 2.5 concentrations …

Decadal Trends in the Temperature Dependence of Summertime Urban PM2.5 in the Northeast United States

PF Vannucci, RC Cohen - ACS Earth and Space Chemistry, 2022 - ACS Publications
Temperature has been identified as a key control over particulate matter of diameters
smaller than 2.5 μm (PM2. 5); however, the mechanisms controlling this phenomenon in …

Spatial cluster detection of regression coefficients in a mixed‐effects model

J Lee, Y Sun, HH Chang - Environmetrics, 2020 - Wiley Online Library
Identifying spatial clusters of different regression coefficients is a useful tool for discerning
the distinctive relationship between a response and covariates in space. Most of the existing …

Low-cost PM2. 5 sensors can help identify driving factors of poor air quality and benefit communities

T Keyes, R Domingo, S Dynowski, R Graves, M Klein… - Heliyon, 2023 - cell.com
Air quality is critical for public health. Residents rely chiefly on government agencies such as
the Environmental Protection Agency (EPA) in the United States to establish standards for …

Flexible quantile contour estimation for multivariate functional data: Beyond convexity

G Agarwal, W Tu, Y Sun, L Kong - Computational Statistics & Data Analysis, 2022 - Elsevier
Nowadays, multivariate functional data are frequently observed in many scientific fields, and
the estimation of quantiles of these data is essential in data analysis. Unlike in the univariate …

Semiparametric estimation of cross-covariance functions for multivariate random fields

GA Qadir, Y Sun - Biometrics, 2021 - academic.oup.com
The prevalence of spatially referenced multivariate data has impelled researchers to
develop procedures for joint modeling of multiple spatial processes. This ordinarily involves …

Identifying meteorological drivers of PM2.5 levels via a Bayesian spatial quantile regression

SW Self, CS McMahan, BT Russell - Environmetrics, 2021 - Wiley Online Library
Recently, due to accelerations in urban and industrial development, the health impact of air
pollution has become a topic of key concern. Of the various forms of air pollution, fine …

Penalized local polynomial regression for spatial data

W Wang, Y Sun - Biometrics, 2019 - academic.oup.com
When performing spatial regression analysis in environmental data applications, spatial
heterogeneity in the regression coefficients is often observed. Spatially varying coefficient …