کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6336861 | 1620347 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Absorbing and scattering aerosols over the source region of biomass burning emissions: Implications in the assessment of optical and radiative properties
ترجمه فارسی عنوان
جذب و پراکندگی آیرزل ها بر منطقه منبع انتشار گازهای زیست توده انتشار: پیامدهای ارزیابی خواص نوری و تابشی
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کلمات کلیدی
ترکیب شیمیایی، عمق نوری آئروسل، آلبادو پراکندگی تک تحریک آلودگی هوا
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علم هواشناسی
چکیده انگلیسی
The current study focuses on the assessment of model simulated optical and radiative properties of aerosols incorporating the measured chemical composition of aerosol samples collected at Patiala during October, 2011-February, 2012. Monthly average mass concentration of PM2.5, elemental carbon (EC), primary organic carbon (POC), water-soluble (WS) and insoluble (INS) aerosols ranged from 120 to 192, 6.2 to 7.2, 20 to 39, 59 to 111 and 35 to 90 μg mâ3, respectively. Mass concentration of different components of aerosols was further used for the assessment of optical properties derived from Optical Properties of Aerosols and Clouds (OPAC) model simulations. Microtops based measured aerosol optical depth (AOD500) ranged from 0.47 to 0.62 showing maximum value during November and December, and minimum during February. Ã
ngström exponent (α380-870) remained high (>0.90) throughout the study period except in February (0.74), suggesting predominance of fine mode particles over the study region. The observed ratio of scattering to absorbing aerosols was incorporated in OPAC model simulations and single scattering albedo (SSA at 500 nm) so obtained ranged between 0.80 and 0.92 with relatively low values during the period of extensive biomass burning. In the present study, SBDART based estimated values of aerosol radiative forcing (ARF) at the surface (SRF) and top of the atmosphere (TOA) ranged from â31 to â66 Wm-2 and -2 to â18 W mâ2 respectively. The atmospheric ARF, ranged between + 18 and + 58 Wm-2 resulting in the atmospheric heating rate between 0.5 and 1.6 K dayâ1. These results signify the role of scattering and absorbing aerosols in affecting the magnitude of aerosol forcing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Atmospheric Environment - Volume 127, February 2016, Pages 61-68
Journal: Atmospheric Environment - Volume 127, February 2016, Pages 61-68
نویسندگان
Atinderpal Singh, Rohit Srivastava, Neeraj Rastogi, Darshan Singh,