Anthropogenic fugitive, combustion and industrial dust is a significant, underrepresented fine particulate matter source in global atmospheric models

• الحاوية / القاعدة: Environmental Research Letters
• المؤلفون الرئيسيون: Sajeev Philip, Randall V Martin, Graydon Snider, Crystal L Weagle, Aaron van Donkelaar, Michael Brauer, Daven K Henze, Zbigniew Klimont, Chandra Venkataraman, Sarath K Guttikunda, Qiang Zhang
• التنسيق: مقال
• اللغة: الإنجليزية
• منشور في: IOP Publishing 2017-01-01
• الموضوعات: fine particulate matter; aerosol; dust; PM2.5; fugitive dust; exposure
• الوصول للمادة أونلاين: https://doi.org/10.1088/1748-9326/aa65a4

Global measurements of the elemental composition of fine particulate matter across several urban locations by the Surface Particulate Matter Network reveal an enhanced fraction of anthropogenic dust compared to natural dust sources, especially over Asia. We develop a global simulation of anthropogenic fugitive, combustion, and industrial dust which, to our knowledge, is partially missing or strongly underrepresented in global models. We estimate 2–16 μ g m ^−3 increase in fine particulate mass concentration across East and South Asia by including anthropogenic fugitive, combustion, and industrial dust emissions. A simulation including anthropogenic fugitive, combustion, and industrial dust emissions increases the correlation from 0.06 to 0.66 of simulated fine dust in comparison with Surface Particulate Matter Network measurements at 13 globally dispersed locations, and reduces the low bias by 10% in total fine particulate mass in comparison with global in situ observations. Global population-weighted PM _2.5 increases by 2.9 μ g m ^−3 (10%). Our assessment ascertains the urgent need of including this underrepresented fine anthropogenic dust source into global bottom-up emission inventories and global models.