کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1777657 1523668 2009 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Short-term changes in the aerosol characteristics at Kharagpur (22°19′N, 87°19′E) during winter
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فیزیک زمین (ژئو فیزیک)
پیش نمایش صفحه اول مقاله
Short-term changes in the aerosol characteristics at Kharagpur (22°19′N, 87°19′E) during winter
چکیده انگلیسی

In-situ measurements of number density, size distribution, and mass loading of near-surface aerosols were carried out at Kharagpur, a site on the eastern part of Indo-Gangetic Plains during the winter month of December 2004. The data have been used to investigate wintertime characteristics of aerosols and their effects on the occurrence of haze. The aerosol number density is found to be of the order of 109 m−3 and mass loading is ~265±70 μg m−3 (5–8 times that reported from south Indian sites). The diurnal patterns and day-to-day variations in aerosol number density and mass loading are closely associated with atmospheric boundary layer height. During haze events, the number density of submicron particles is found to be 2–5 times higher than that during non-hazy period. This could be attributed to the enhanced concentration of anthropogenic aerosols, low atmospheric boundary layer height/ventilation coefficient and airflow convergence.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Atmospheric and Solar-Terrestrial Physics - Volume 71, Issues 17–18, December 2009, Pages 1771–1783
نویسندگان
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