کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8863512 | 1620284 | 2018 | 33 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Aerosol particles during the Innsbruck Air Quality Study (INNAQS): Fluxes of nucleation to accumulation mode particles in relation to selective urban tracers
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علم هواشناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Aerosol particles during the Innsbruck Air Quality Study (INNAQS): Fluxes of nucleation to accumulation mode particles in relation to selective urban tracers Aerosol particles during the Innsbruck Air Quality Study (INNAQS): Fluxes of nucleation to accumulation mode particles in relation to selective urban tracers](/preview/png/8863512.png)
چکیده انگلیسی
Despite the widely accepted implications of particulate matter on urban air quality, the knowledge of directly measured real-world emissions of particles from urban areas is highly uncertain. During the Innsbruck Air Quality Study (INNAQS), size-resolved particle number concentrations and fluxes for particles with diameters between 6â¯nm and 0.64â¯Î¼m diameter were measured together with CO2, NOX and selective non-methane volatile organic tracers. With this unique dataset, exchange fluxes of eight different particle size bins were studied in relation to urban gas phase tracers. Particle number fluxes were almost completely dominated by ultrafine particles with diameters <0.1â¯Î¼m of which 50% were smaller than 50â¯nm. Correlation analysis reveals that urban particles shared common sources with NOX, benzene, and CO2, which, based on footprint analysis, can mostly be attributed to traffic. Fluxes of particles with diameters between 0.03â¯Î¼m and 0.1â¯Î¼m were mostly positive and showed the best correlations with traffic and traffic associated tracer fluxes. Fluxes in the few-nanometer size-range showed more variability, which was caused by bidirectional flux patterns. Fluxes of particles larger than 0.25â¯Î¼m correlated only poorly with traffic-related emissions. This manuscript demonstrates size-specific variability and bi-directionality in particle exchange and provides size-specific particle emission factors for traffic related tracers from the urban area of Innsbruck.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Atmospheric Environment - Volume 190, October 2018, Pages 376-388
Journal: Atmospheric Environment - Volume 190, October 2018, Pages 376-388
نویسندگان
M.J. Deventer, L. von der Heyden, C. Lamprecht, M. Graus, T. Karl, A. Held,