Assessment of PM_2.5 and PM₁₀ over Guwahati in Brahmaputra River Valley: Temporal evolution, source apportionment and meteorological dependence

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• 作者：S. Tiwari^a ; ^b ; U.C. Dumka^c ; ^{ucdumka@gmail.com} ; ^{dumka@aries.res.in} ; A.S. Gautam^d ; D.G. Kaskaoutis^e ; A.K. Srivastava^a ; D.S. Bisht^a ; R.K. Chakrabarty^f ; B.J. Sumlin^f ; F. Solmon^g
• 关键词：Particulate matter ; Air quality ; Meteorology ; Boundary layer dynamics ; Brahmaputra River Valley
• 刊名：Atmospheric Pollution Research
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：8
• 期：1
• 页码：13-28
• 全文大小：5584 K
• 卷排序：8

文摘

Monthly-mean PM10 concentrations above 150 μg m−3 during January–March. PM2.5 concentrations are about five-fold higher than the USEPA standards. PM concentrations are ∼50 – 57% lower during the rainy days. High-pollution episodes are mostly due to anthropogenic (natural) emissions during winter (spring). Significant dependence of PM concentrations on meteorological parameters and source regions.