Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.5230 |
Seasonal assessment and classification of aerosols transported to Lahore using AERONET and MODIS deep blue retrievals | |
Zafar, Qudsia1; Zafar, Sidra2; Holben, Brent3 | |
2018-02-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
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ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2018 |
卷号 | 38期号:2页码:1022-1040 |
文章类型 | Article |
语种 | 英语 |
国家 | Pakistan; Australia; USA |
英文摘要 | Daily measurements of aerosol optical depth () and angstrom ngstrom wavelength exponent () acquired from Aerosol Robotic Network (AERONET) and Moderate Resolution Imaging Spectrometer (MODIS) are analysed over Lahore-an urban city of Pakistan (period: 2010-2014) to investigate contribution of different types of aerosols originating from both local and regional source locations. The obtained annual averages (mean +/- standard deviation) for AERONET retrievals of (500nm) and (440-870nm) are 0.68 +/- 0.37 (0.08-2.91) and 0.99 +/- 0.33 (0-1.8), respectively. Of all the sources, 61% are found within Pakistan, 11% in India, 19% in Afghanistan, 6% in Iran and 2% in Saudi Arabia with seasonal contributions of 35, 25, 23 and 17% in pre-monsoon, monsoon, winter and post-monsoon, respectively. The bimodal distributions of show dominance of coarse-mode particles during pre-monsoon, fine-mode particles during post-monsoon and presence of both coarse-mode and fine-mode particles during winter and monsoon with winter showing more fine-mode particles. Two broad classes of aerosols namely desert dust (DD) and biomass burning/urban industrial (BU) are identified with criteria, e.g. 0.3 and 0.75 indicating presence of DD while 0.2 and 1.15 indicating BU. The frequency of occurrence (FOO) of DD and BU aerosols is further identified by applying classification criteria over Aqua-MODIS deep blue retrievals. The FOO identifies anthropogenic activity on-going throughout the year, disrupted with DD aerosols only during pre-monsoon and monsoon. The maximum dust activity is seen over Indo-Gangetic plains (IGP) (localized maxima: 35-45%) and the Arabian peninsula (>55%) during pre-monsoon, while maximum BU aerosols are found over IGP, central and south-eastern plains of India and the state of Gujarat (localized maxima: >70%) in winter and post-monsoon. |
英文关键词 | aerosol optical depth angstrom ngstrom wavelength exponent long-range transport AERONET HYSPLIT MODIS deep blue desert dust urban-industrial aerosols |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000423816900035 |
WOS关键词 | SINGLE-SCATTERING ALBEDO ; OPTICAL-PROPERTIES ; WAVELENGTH DEPENDENCE ; ATMOSPHERIC AEROSOL ; PHYSICAL-PROPERTIES ; SIZE DISTRIBUTION ; SKY RADIANCE ; RADIATIVE PROPERTIES ; ANGSTROM EXPONENT ; INDIAN HIMALAYA |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/37428 |
专题 | 气候变化 |
作者单位 | 1.Global Change Impact Studies Ctr, Emigrat Tower 6th Floor,Mauve Area G-8-1, Islamabad 44000, Pakistan; 2.Univ Newcastle, Sch Math & Phys Sci, Callaghan, NSW, Australia; 3.NASA, Goddard Space Flight Ctr, Def & Space, Greenbelt, MD USA |
推荐引用方式 GB/T 7714 | Zafar, Qudsia,Zafar, Sidra,Holben, Brent. Seasonal assessment and classification of aerosols transported to Lahore using AERONET and MODIS deep blue retrievals[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2018,38(2):1022-1040. |
APA | Zafar, Qudsia,Zafar, Sidra,&Holben, Brent.(2018).Seasonal assessment and classification of aerosols transported to Lahore using AERONET and MODIS deep blue retrievals.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38(2),1022-1040. |
MLA | Zafar, Qudsia,et al."Seasonal assessment and classification of aerosols transported to Lahore using AERONET and MODIS deep blue retrievals".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38.2(2018):1022-1040. |
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