干旱区生态环境知识资源中心(Arid): Seasonal climatology and relationship between AOD and cloud properties inferred from the MODIS over Malawi, Southeast Africa

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DOI	10.1016/j.apr.2020.07.023
	Seasonal climatology and relationship between AOD and cloud properties inferred from the MODIS over Malawi, Southeast Africa
	Nyasulu, Matthews; Haque, Md Mozammel; Boiyo, Richard; Kumar, Kanike Raghavendra; Zhang, Yan-Lin
通讯作者	Zhang, YL
来源期刊	ATMOSPHERIC POLLUTION RESEARCH
ISSN	1309-1042
出版年	2020
卷号	11 期号:11 页码:1933-1952
英文摘要	The studies related to aerosol and cloud properties are rare over the South Eastern African continent despite their significant influence on the regional climate. The present work is aimed at analyzing the spatiotemporal correlations between aerosol and cloud properties during 2008-2017 derived from the Moderate Resolution Imaging Spectroradiometer (MODIS) over the Republic of Malawi, Southeast Africa. The annual mean aerosol optical depth at 550 nm (AOD(550)) was found high ( > 0.23) around the Lake Malawi and its environments, and in the southern parts of the study domain, characterized by dense population and increased anthropogenic activities. Whereas, low AOD centers were noticed over the high-altitude locations of central Malawi. The seasonal mean AOD(550) was found high during September-October-November (SON) (0.32) and June-July-August (JJA) (0.24) December-January-February (DJF) (0.2), and lowest in March-April-May (MAM) (0.16). The Angstrom exponent (AE(412)(-4)(70)) sensitive to fine-mode particles was found high ( > 1.2) in most of the regions during the study period. The trend analysis from the linear regression technique found a general increase in AOD, except during SON was characterized by decreasing AOD. Besides, we investigated on understanding the relationship between AOD and cloud microphysical properties over the domain. The AOD(550) exhibited a negative correlation with cloud fraction (CF) and the cloud effective radius (CER). However, it showed a positive correlation with cloud top temperature (CTT) in areas of high AOD. Finally, the results from the backward trajectory analysis revealed that aerosols over Malawi were associated with long-range transport from the Arabian Deserts, Madagascar Island, Central Africa, and the Indian Ocean, along with locally produced aerosols during different seasons. The findings may be useful to better understand the sources and climatic effects of atmospheric aerosols in southeast Africa.
英文关键词	Aerosol optical depth Cloud fraction Cloud effective radius Republic of Malawi
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000579861400006
WOS关键词	AEROSOL OPTICAL DEPTH ; PRECIPITATION INTERACTIONS ; SATELLITE DATA ; MISR ; TRENDS ; VARIABILITY ; PRODUCTS ; RAINFALL ; IMPACT ; URBAN
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	南京信息工程大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326911
作者单位	[Nyasulu, Matthews; Haque, Md Mozammel; Zhang, Yan-Lin] Nanjing Univ Informat Sci & Technol, Yale NUIST Ctr Atmospher Environm, Sch Appl Meteorol, Nanjing 210044, Jiangsu, Peoples R China; [Nyasulu, Matthews] Dept Climate Change & Meteorol Serv DCMS Malawi, POB 1808, Blantyre, Malawi; [Haque, Md Mozammel; Zhang, Yan-Lin] Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Atmospher Environm & Equip, Sch Environm Sci & Engn, Jiangsu Key Lab Atmospher Environm Monitoring & P, Nanjing 210044, Peoples R China; [Boiyo, Richard] Meru Univ Sci & Technol, Dept Phys Sci, POB 972-60200, Meru, Kenya; [Kumar, Kanike Raghavendra] Koneru Lakshmaiah Educ Fdn KLEF, Dept Phys, Guntur 522502, Andhra Pradesh, India
推荐引用方式 GB/T 7714	Nyasulu, Matthews,Haque, Md Mozammel,Boiyo, Richard,et al. Seasonal climatology and relationship between AOD and cloud properties inferred from the MODIS over Malawi, Southeast Africa[J]. 南京信息工程大学,2020,11(11):1933-1952.
APA	Nyasulu, Matthews,Haque, Md Mozammel,Boiyo, Richard,Kumar, Kanike Raghavendra,&Zhang, Yan-Lin.(2020).Seasonal climatology and relationship between AOD and cloud properties inferred from the MODIS over Malawi, Southeast Africa.ATMOSPHERIC POLLUTION RESEARCH,11(11),1933-1952.
MLA	Nyasulu, Matthews,et al."Seasonal climatology and relationship between AOD and cloud properties inferred from the MODIS over Malawi, Southeast Africa".ATMOSPHERIC POLLUTION RESEARCH 11.11(2020):1933-1952.