Wintertime Air Quality across the Kathmandu Valley, Nepal: Concentration, Composition, and Sources of Fine and Coarse Particulate Matter.

In general, there was a decreasing trend in both absolute and percent contributions of garbage burning ( Figure 3 b) and vehicle emissions ( Figure 3 c) to PM 2.5 OC from urban to rural sites (from Ratnapark, Lalitpur, Bode, Dhulikhel, and Lumbini).

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