Ground-Based Remote Sensing of Aerosol Properties over a Coastal Megacity of Pakistan
المؤلفون المشاركون
المصدر
العدد
المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-12، 12ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2018-05-13
دولة النشر
مصر
عدد الصفحات
12
التخصصات الرئيسية
الملخص EN
Atmospheric aerosols are considered to be an important constituent of Earth’s atmosphere because of their climatic, environmental, and health effects.
Therefore, while studying the global climate change, investigation of aerosol concentrations and properties is essential both at local and regional levels.
In this paper, we have used relatively long-term Aerosol Robotic Network (AERONET) data during September 2006–August 2014 to analyze aerosol properties such as aerosol optical depth at 500 nm (AOD), Ångström exponent (440–870 nm) (AE), refractive index (RI), and asymmetry parameter over Karachi, a coastal megacity of Pakistan.
The average annual values of AOD and AE were found to be 0.48 ± 0.20 and 0.59 ± 0.29, respectively.
The peak (0.88 ± 0.31) AOD was recorded in July with corresponding AE of 0.30 ± 0.22 representing reasonably higher concentration of coarse size particles over Karachi.
The cluster analysis using the scatter plot between absorption AE and extinction AE revealed that desert dust prevailed in the atmosphere of Karachi in spring and summer, while biomass burning aerosols dominate in autumn and winter.
The peak values of volume concentrations of coarse and fine-mode particulate matter were found in summer and autumn, respectively.
Also, we found significant growing trend in single-scattering albedo with wavelength, indicating the domination of dust particles during summer and spring.
The peak value of the real part of the RI was observed in spring (1.53) and modest in winter (1.50).
On the contrary, the peak value of the imaginary part of the RI was observed to be constantly elevated in winter and lesser in spring.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Tariq, Salman& ul-Haq, Zia. 2018. Ground-Based Remote Sensing of Aerosol Properties over a Coastal Megacity of Pakistan. Advances in Meteorology،Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1118698
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Tariq, Salman& ul-Haq, Zia. Ground-Based Remote Sensing of Aerosol Properties over a Coastal Megacity of Pakistan. Advances in Meteorology No. 2018 (2018), pp.1-12.
https://search.emarefa.net/detail/BIM-1118698
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Tariq, Salman& ul-Haq, Zia. Ground-Based Remote Sensing of Aerosol Properties over a Coastal Megacity of Pakistan. Advances in Meteorology. 2018. Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1118698
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1118698
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر