Hemu Kafle

Kathmandu Institute of Applied Sciences (KIAS)
Influence of transboundary air pollution into the atmosphere of Kathmandu Valley
Keywords:

AIR POLLUTION · KATHMANDU VALLEY · Nepal · PM2.5 · POTENTIAL SOURCE CONTRIBUTION FUNCTION · TRANSBOUNDARY SOURCES

Influence of transboundary air pollution into the atmosphere of Kathmandu Valley

Air pollution is a major problem of the 21st century, bearing most of the burden in South Asia, with the highest rate of particulate matter (PM) concentration in recent years. This paper assesses transboundary air pollution in Kathmandu Valley's atmosphere originating from both neighbouring countries and regional sources within Nepal. Daily average PM2.5 data (2017–2013;2020)...

Kafle, H., Kafle, K., Bhujel, S., Thapa, G., Khadgi, J., & D. Cohen, D. (2026). Influence of transboundary air pollution into the atmosphere of Kathmandu Valley. APN Science Bulletin, 15(1). doi:10.30852/sb.2025.3056

Historical drought and its trend in South Asia: Spatial and temporal analysis 2000-2020
Keywords:

Drought severity index · Long-term drought analysis · Meteorological drought · MODIS

Historical drought and its trend in South Asia: Spatial and temporal analysis 2000-2020

Every year, South Asian countries suffer from declining agricultural outputs due to climate extremes such as floods and droughts. Recurrent droughts have depressed rural economies and enhanced widespread hunger and human migration to South Asian cities (Miyan, 2015). Due to climatic changes, the region is projected to experience rising temperatures and more frequent extreme weather...

Kafle, H., Khaitu, S., Gyawali, D., Shrestha, D., Koirala, D., Kamaruzzaman, M., ... Yamaguchi, Y. (2023). Historical drought and its trend in South Asia: Spatial and temporal analysis 2000-2020. APN Science Bulletin, 12(1). doi:10.30852/sb.2022.2022