干旱区生态环境知识资源中心(Arid): Lidar observations of Saharan dust loads above Sofia, Bulgaria: dust layers extending throughout the troposphere (a case study)

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DOI	10.1117/1.JRS.14.014504
	Lidar observations of Saharan dust loads above Sofia, Bulgaria: dust layers extending throughout the troposphere (a case study)
	Deleva, Atanaska 1; Peshev, Zahari 1; Dreischuh, Tanja 1; Chaikovsky, Anatoli 2; Slesar, Alexander 2; Fedarenka, Anton 2
通讯作者	Peshev, Zahari
来源期刊	JOURNAL OF APPLIED REMOTE SENSING
ISSN	1931-3195
出版年	2020
卷号	14 期号:1
英文摘要	We report the lidar observations of a prolonged unusual event of atmospheric aerosol load extending up to about 15 km above the city of Sofia, Bulgaria. Based on the results obtained and air-transport modeling data, we show that the observed diffused aerosol layers consisted predominantly of Saharan mineral dust partly mixed with other aerosol types. We present retrieved time-averaged vertical profiles of the aerosol backscatter coefficient (at 532 and 1064 nm) in order to display the aerosol density height distribution, whereas the aerosol layering temporal dynamics is illustrated by color-coded maps of range-corrected lidar signals. We also calculated the profiles of the backscatter-related Angstrom exponent (BAE), which showed the domination of moderately coarse aerosol particle modes. Further, frequency count distributions of the BAE occurrences were obtained and analyzed statistically. Particular attention was paid to the revealed BAE distribution skewness, in view of better identifying and characterizing the aerosol size and composition changes. The results obtained enabled us to argue that the atmosphere above Sofia in the period considered had been strongly affected by intrusion of Saharan dust. Desert aerosols had perturbed or covered over the top of the atmospheric boundary layer and filled up the free troposphere, considerably influencing the local meteorological conditions. We also ascertained that aged volcanic aerosols had been likely present and detected at tropopause altitudes. (C) 2020 Society of Photo-Optical Instrumentation Engineers (SPIE)
英文关键词	laser remote sensing lidar atmospheric aerosols Saharan dust troposphere
类型	Article
语种	英语
国家	Bulgaria ; BELARUS
收录类别	SCI-E
WOS记录号	WOS:000512691200001
WOS关键词	ATMOSPHERIC BOUNDARY-LAYER ; WESTERN MEDITERRANEAN-SEA ; MINERAL DUST ; AFRICAN DUST ; VERTICAL PROFILES ; EARLINET PROJECT ; TRANSPORT ; CLIMATE ; PARTICLES ; EVOLUTION
WOS类目	Environmental Sciences ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314868
作者单位	1.Bulgarian Acad Sci, Inst Elect, Sofia, Bulgaria; 2.Natl Acad Sci Belarus, BI Stepanov Inst Phys, Minsk, BELARUS
推荐引用方式 GB/T 7714	Deleva, Atanaska,Peshev, Zahari,Dreischuh, Tanja,et al. Lidar observations of Saharan dust loads above Sofia, Bulgaria: dust layers extending throughout the troposphere (a case study)[J],2020,14(1).
APA	Deleva, Atanaska,Peshev, Zahari,Dreischuh, Tanja,Chaikovsky, Anatoli,Slesar, Alexander,&Fedarenka, Anton.(2020).Lidar observations of Saharan dust loads above Sofia, Bulgaria: dust layers extending throughout the troposphere (a case study).JOURNAL OF APPLIED REMOTE SENSING,14(1).
MLA	Deleva, Atanaska,et al."Lidar observations of Saharan dust loads above Sofia, Bulgaria: dust layers extending throughout the troposphere (a case study)".JOURNAL OF APPLIED REMOTE SENSING 14.1(2020).