干旱区生态环境知识资源中心(Arid): Long-Term Variability of Dust Events in Southwestern Iran and Its Relationship with the Drought

Arid

DOI	10.3390/atmos12101350
	Long-Term Variability of Dust Events in Southwestern Iran and Its Relationship with the Drought
	Hamzeh, Nasim Hossein; Kaskaoutis, Dimitris G.; Rashki, Alireza; Mohammadpour, Kaveh
通讯作者	Kaskaoutis, DG (corresponding author)，Natl Observ Athens, Inst Environm Res & Sustainable Dev, Athens 15236, Greece. ; Kaskaoutis, DG (corresponding author)，Univ Crete, Environm Chem Proc Lab, Dept Chem, Iraklion 70013, Greece.
来源期刊	ATMOSPHERE
EISSN	2073-4433
出版年	2021
卷号	12 期号:10
英文摘要	Dust storms represent a major environmental challenge in the Middle East. The southwest part of Iran is highly affected by dust events transported from neighboring desert regions, mostly from the Iraqi plains and Saudi Arabia, as well as from local dust storms. This study analyzes the spatio-temporal distribution of dust days at five meteorological stations located in southwestern Iran covering a period of 22 years (from 1997 to 2018). Dust codes (06, 07, 30 to 35) from meteorological observations are analyzed at each station, indicating that 84% of the dust events are not of local origin. The average number of dust days maximizes in June and July (188 and 193, respectively), while the dust activity weakens after August. The dust events exhibit large inter-annual variability, with statistically significant increasing trends in all of five stations. Spatial distributions of the aerosol optical depth (AOD), dust loading, and surface dust concentrations from a moderate resolution imaging spectroradiometer (MODIS) and Modern-Era Retrospective analysis for Research and Applications (MERRA-2) retrievals reveal high dust accumulation over southwest Iran and surrounding regions. Furthermore, the spatial distribution of the (MODIS)-AOD trend (%) over southwest Iran indicates a large spatial heterogeneity during 2000-2018 with trends ranging mostly between -9% and 9% (not statistically significant). 2009 was the most active dust year, followed by 2011 and 2008, due to prolonged drought conditions in the fertile crescent and the enhanced dust emissions in the Iraqi plains during this period. In these years, the AOD was much higher than the 19-year average (2000 to 2018), while July 2009 was the dustiest month with about 25-30 dust days in each station. The years with highest dust activity were associated with less precipitation, negative anomalies of the vegetation health index (VHI) and normalized difference vegetation index (NDVI) over the Iraqi plains and southwest Iran, and favorable meteorological dynamics triggering stronger winds.
英文关键词	dust events satellite observations drought vegetation health index trend southwest Iran
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000759945900001
WOS关键词	AEROSOL OPTICAL DEPTH ; SISTAN REGION ; KHUZESTAN PROVINCE ; HUMAN HEALTH ; STORMS ; IMPACTS ; CLIMATOLOGY ; PATTERNS ; SUMMER ; LAND
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/375896
作者单位	[Hamzeh, Nasim Hossein] Atmospher Sci & Meteorol Res Ctr ASMERC, Tehran 1497716385, Iran; [Kaskaoutis, Dimitris G.] Natl Observ Athens, Inst Environm Res & Sustainable Dev, Athens 15236, Greece; [Kaskaoutis, Dimitris G.] Univ Crete, Environm Chem Proc Lab, Dept Chem, Iraklion 70013, Greece; [Rashki, Alireza; Mohammadpour, Kaveh] Ferdowsi Univ Mashhad, Dept Desert & Arid Zones Management, Mashhad 917794897, Razavi Khorasan, Iran; [Mohammadpour, Kaveh] Italian Natl Agcy New Technol Energy & Sustainabl, Climate Modeling Lab Dept Sustainabil SSPT MET CL, I-00123 Rome, Italy
推荐引用方式 GB/T 7714	Hamzeh, Nasim Hossein,Kaskaoutis, Dimitris G.,Rashki, Alireza,et al. Long-Term Variability of Dust Events in Southwestern Iran and Its Relationship with the Drought[J],2021,12(10).
APA	Hamzeh, Nasim Hossein,Kaskaoutis, Dimitris G.,Rashki, Alireza,&Mohammadpour, Kaveh.(2021).Long-Term Variability of Dust Events in Southwestern Iran and Its Relationship with the Drought.ATMOSPHERE,12(10).
MLA	Hamzeh, Nasim Hossein,et al."Long-Term Variability of Dust Events in Southwestern Iran and Its Relationship with the Drought".ATMOSPHERE 12.10(2021).