2019
DOI: 10.1016/j.atmosenv.2018.12.043
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Air quality trends of the Kathmandu Valley: A satellite, observation and modeling perspective

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Cited by 42 publications
(36 citation statements)
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“…High daily average concentrations of PM 2.5 (up to 160 µg m −3 ) (Shakya et al, 2017a) and PM 10 (up to 579 µg m −3 ) have been documented in the Kathmandu Valley (Giri et al, 2006). A satellite-derived aerosol optical depth study indicates substantial increases in particulate loading in the Kathmandu Valley and nearby background sites over the past 15 years (Mahapatra et al, 2019). Measured components of regional PM have included black carbon (BC; 17 %), sulfate (17 %), and ammonium (11 %) in PM 2.5 (Shakya et al, 2017a) and organic carbon (OC; 23 %) and nitrate (2.5 %) in PM 10 (Kim et al, 2015).…”
Section: Introductionmentioning
confidence: 99%
“…High daily average concentrations of PM 2.5 (up to 160 µg m −3 ) (Shakya et al, 2017a) and PM 10 (up to 579 µg m −3 ) have been documented in the Kathmandu Valley (Giri et al, 2006). A satellite-derived aerosol optical depth study indicates substantial increases in particulate loading in the Kathmandu Valley and nearby background sites over the past 15 years (Mahapatra et al, 2019). Measured components of regional PM have included black carbon (BC; 17 %), sulfate (17 %), and ammonium (11 %) in PM 2.5 (Shakya et al, 2017a) and organic carbon (OC; 23 %) and nitrate (2.5 %) in PM 10 (Kim et al, 2015).…”
Section: Introductionmentioning
confidence: 99%
“…The sampling location of southern Nepal is situated next to the Indo-Gangetic Plain (IGP), which is known to have a high population density, pollution sources and thick haze [80]. Several studies reported IGP air pollution and its widespread nature through observation, model and satellite based studies [81][82][83][84]. Hence, IGP pollution can be one of the major contributors to background pollution at the sampling site.…”
Section: Health Risk Assessment Using Air Q+mentioning
confidence: 99%
“…A recent study conducted by Mahapatra et al (2019) indicates an increasing trend of aerosol loading within the Kathmandu Valley by approximately 50-60% in between 2000-2015. This high pollution load could be attributed to rapid population and vehicular growth along with the increase in the energy demands of the valley.…”
Section: Introductionmentioning
confidence: 99%
“…Extensive research has been conducted in the urban areas of LMIC in recent decades (Edgerton et al, 1999;Molina and Molina, 2004;Petkova et al, 2013;Wang et al, 2013;Sahu and Kota, 2017), but the pace of air quality improvement remains slow in many of those cities (Colbeck et al, 2010;Maji et al, 2015;Njoku et al, 2016). Among those cities, the Kathmandu Valley is one such highly polluted area in the † Now at North Carolina State University, Raleigh, NC, USA South Asian region (Parajuly, 2016;Mahapatra et al, 2019). Earlier, air quality studies were limited in scope, especially because of the absence of appropriate instruments for measurements in the valley.…”
Section: Introductionmentioning
confidence: 99%
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