کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6338678 1620366 2015 33 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mobile monitoring for mapping spatial variation in urban air quality: Development and validation of a methodology based on an extensive dataset
ترجمه فارسی عنوان
نظارت تلفن همراه برای نقشه برداری تغییرات فضایی در کیفیت هوای شهری: توسعه و اعتبارسنجی یک روش مبتنی بر مجموعه داده های گسترده
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علم هواشناسی
چکیده انگلیسی
A large set of black carbon (BC) measurements was collected in Antwerp, Belgium, using a bicycle equipped with a portable BC monitor (micro-aethalometer). The campaign consisted of 256 and 96 runs along two fixed routes (2 and 5 km long). Large gradients over short distances and differences up to a factor of 10 in mean BC concentrations aggregated at a resolution of 20 m are observed. Mapping at such a high resolution is possible, but a lot of repeated measurements are required. After computing a trimmed mean and applying background normalisation, depending on the location 24-94 repeated measurement runs (median of 41) are required to map the BC concentrations at a 50 m resolution with an uncertainty of 25%. When relaxing the uncertainty to 50%, these numbers reduce to 5-11 (median of 8) runs. We conclude that mobile monitoring is a suitable approach for mapping the urban air quality at a high spatial resolution, and can provide insight into the spatial variability that would not be possible with stationary monitors. A careful set-up is needed with a sufficient number of repetitions in relation to the desired reliability and spatial resolution. Specific data processing methods such as background normalisation and event detection have to be applied.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Atmospheric Environment - Volume 105, March 2015, Pages 148-161
نویسندگان
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