文章基本信息

标题：Seasonal Behavior of Aerosol Vertical Concentration in Dakar and Role Played by the Sea-Breeze
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作者：Habib Senghor ; Éric Machu ; Luis Durán 等
期刊名称：Open Journal of Air Pollution
印刷版ISSN：2169-2653
电子版ISSN：2169-2661
出版年度：2020
卷号：9
期号：1
页码：11-26
DOI：10.4236/ojap.2020.91002
出版社：Scientific Research Publishing
摘要：The Westward transport of mineral dust from the North Africa continent to Atlantic Ocean can produce poor air quality, low visibilities, and negatively impacting respiratory and cardiac health due to the optical and physical properties of aerosols. The dynamical impact of the sea-breeze on the dust vertical distribution in West Africa remains unknown. To investigate this issue, we have used in-situ measurements from lidar. We have focused on the attenuated backscatter of aerosols to study the effect of the local circulation on the vertical profile of mineral dust at land-sea transition. The results highlight a strong diurnal cycle of mineral dust associated with the nocturnal low-level jet (NLLJ). The jet is located between 500 m and 1000 m and crucially affected by the dynamic of the sea-breeze circulation.
关键词：Aerosols; Dust; Sea-Breeze; Circulation