干旱区生态环境知识资源中心(Arid): Analysis of the Winter AOD Trends over Iran from 2000 to 2020 and Associated Meteorological Effects

Arid

DOI	10.3390/rs15040905
	Analysis of the Winter AOD Trends over Iran from 2000 to 2020 and Associated Meteorological Effects
	Yousefi, Robabeh; Wang, Fang; Ge, Quansheng; Shaheen, Abdallah; Kaskaoutis, Dimitris G.
通讯作者	Wang, F
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2023
卷号	15 期号:4
英文摘要	High aerosol levels pose severe air pollution and climate change challenges in Iran. Although regional aerosol optical depth (AOD) trends have been analyzed during the dusty season over Iran, the specific factors that are driving the spatio-temporal variations in winter AOD and the influence of meteorological dynamics on winter AOD trends remain unclear. This study analyzes the long-term AOD trends over Iran in winter during the period 2000-2020 using the updated Modern-Era Retrospective Analysis for Research and Applications version 2 (MERRA-2) and the Moderate Resolution Imaging Spectroradiometer (MODIS) datasets. Our results showed that the winter AOD exhibited a significant upward trend during the period 2000-2010 followed by a significant decrease during the period 2010-2018. We found that the winter AOD trends are important over this arid region due to multiple meteorological mechanisms which also affect the following spring/summer dusty period. Ground-based observations from Aerosol Robotic Network data (AERONET) in the Middle East region display trends comparable to those of both MERRA-2 and MODIS and indicated that aeolian dust and the meteorological dynamics associated with it play a central role in winter AOD changes. Furthermore, this study indicated that a significant downward trend in winter sea level pressure (SLP) during the early period (2000-2010) induced hot and dry winds which originated in the desert regions in Iraq and Arabia and blew toward Iran, reducing relative humidity (RH) and raising the temperature and thus promoting soil drying and dust AOD accumulation. In contrast, a significant increase in winter SLP during the late period (2010-2018) induced cold and wet winds from northwestern regions which increased RH and lowered the temperature, thus reducing dust AOD. This suggests that the changes in AOD over Iran are highly influenced by seasonal meteorological variabilities. These results also highlight the importance of examining wintertime climatic variations and their effects on the dust aerosol changes over the Middle East.
英文关键词	winter AOD trends MODIS MERRA-2 dust changes meteorology 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:000940619900001
WOS关键词	AEROSOL OPTICAL DEPTH ; DUST EMISSION ; MIDDLE-EAST ; SATELLITE ; AERONET ; MODEL ; CLIMATOLOGY ; VARIABILITY ; INSIGHT ; STORMS
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; 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/2XILL650/398243
推荐引用方式 GB/T 7714	Yousefi, Robabeh,Wang, Fang,Ge, Quansheng,et al. Analysis of the Winter AOD Trends over Iran from 2000 to 2020 and Associated Meteorological Effects[J],2023,15(4).
APA	Yousefi, Robabeh,Wang, Fang,Ge, Quansheng,Shaheen, Abdallah,&Kaskaoutis, Dimitris G..(2023).Analysis of the Winter AOD Trends over Iran from 2000 to 2020 and Associated Meteorological Effects.REMOTE SENSING,15(4).
MLA	Yousefi, Robabeh,et al."Analysis of the Winter AOD Trends over Iran from 2000 to 2020 and Associated Meteorological Effects".REMOTE SENSING 15.4(2023).