Nationwide analysis of air pollution hotspots across India: A spatiotemporal PM_2.5 trend analysis (2008-2019).

ABSTRACT:

Introduction

India experiences high levels of air pollution as measured by fine particulate matter <2.5 μm (PM_2.5) across the country. With limited resources, it is imperative to identify the most impacted areas. We aimed to identify air pollution hotspots in India and analyze temporal trends.

Methods

We conducted a geospatial analysis using Getis-Ord Gi statistics on gridded-annual levels of PM_2.5 disaggregated for every state/UT and three largest cities [Delhi, Kolkata & Mumbai] of India from 2008 to 2019. The annual average PM_2.5 was derived from a validated and robust nationwide spatiotemporal model(1kmx1km). Hotspots were identified annually using Gi∗ score and p-value and temporal trends across 2 periods [T1:2008-2013 & T2:2014-2019] fo

SUBMITTER: Jaganathan S 

PROVIDER: S-EPMC11790316 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature