Large reductions in urban black carbon concentrations in the United States between 1965 and 2000

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• 作者：Thomas W. Kirchstetter^a ; ^b ; ; Chelsea V. Preble^b ; Odelle L. Hadley^a ; ¹ ; Tami C. Bond^c ; Joshua S. Apte^d
• 关键词：Concentration trends ; Coefficient of haze ; Elemental carbon ; Air pollution ; Energy consumption ; Carbon dioxide emissions
• 刊名：Atmospheric Environment
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：151
• 期：Complete
• 页码：17-23
• 全文大小：1272 K
• 卷排序：151

文摘

Mined retired coefficient of haze (COH) data to estimate black carbon (BC) trends. Determined COH-BC relationship with two reinstated COH monitors and aethalometers. BC concentrations decreased markedly between 1965 and 2000 across the U.S. BC decreased from 13 to 2 μg m−3 in New Jersey and 4 to 1 μg m−3 in California. Declining BC concentrations contrast increasing energy use and CO2 emissions.