Hyper-local to regional exposure contrast of source-resolved PM_2.5 components across the contiguous United States: implications for health assessment.

ABSTRACT:

Background

Improved understanding of sources and processes that drive exposure contrast of fine particulate matter (PM_2.5) is essential for designing and interpreting epidemiological study outcomes.

Objective

We investigate the contribution of various sources and processes to PM_2.5 exposure contrasts at different spatial scales across the continental United States.

Methods

We consider three cases: exposure contrast within a metro area, nationwide exposure contrast with high spatial resolution, and nationwide exposure contrast with low spatial resolution. Using national empirical model estimates of source- and chemically specific PM_2.5 concentration predictions, we quantified the contribution of various sources and processes to PM₂

SUBMITTER: Saha PK 

PROVIDER: S-EPMC11758853 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature