The effect of wildfires on air quality in Kathmandu, Nepal

Autor: Sajesh Kuikel, Binod Pokharel, Nawraj Bhattarai
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Environmental Advances, Vol 15, Iss , Pp 100493- (2024)
Druh dokumentu: article
ISSN: 2666-7657
DOI: 10.1016/j.envadv.2024.100493
Popis: Air pollution spikes in the central Himalayas' southern regions, including Nepal and northern India, occur mainly from wildfires during March to May. Despite being a significant contributor to pre-monsoon pollution, wildfire smoke remains under-researched. This study used multiple datasets and trajectory analysis to examine hazardous air pollution levels in Nepal's Kathmandu Valley from 2018-2022. It found 47 days exceeding the daily PM2.5 limit of 100 μg/m3, peaking at 305 μg/m3. The pollution was largely due to wildfire smoke from neighboring and transboundary areas, with a strong correlation between active fire counts and pollution levels. The correlation peaked at 0.89 (p
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