干旱区生态环境知识资源中心(Arid): Interdecadal Changes in Aerosol Optical Depth over Pakistan Based on the MERRA-2 Reanalysis Data during 1980-2018

Arid

DOI	10.3390/rs13040822
	Interdecadal Changes in Aerosol Optical Depth over Pakistan Based on the MERRA-2 Reanalysis Data during 1980-2018
	Khan, Rehana; Kumar, Kanike Raghavendra; Zhao, Tianliang; Ullah, Waheed; de Leeuw, Gerrit
通讯作者	Kumar, KR (corresponding author), Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Int Joint Lab Climate & Environm Change ILCEC,Sch, Key Lab Aerosol Cloud Precipitat,China Meteorol A, Nanjing 210044, Peoples R China. ; Kumar, KR (corresponding author), Koneru Lakshmaiah Educ Fdn KLEF, Dept Phys, Guntur 522502, Andhra Pradesh, India.
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2021
卷号	13 期号:4
英文摘要	The spatiotemporal evolution and trends in aerosol optical depth (AOD) over environmentally distinct regions in Pakistan are investigated for the period 1980-2018. The AOD data for this period was obtained from the Modern-era retrospective analysis for research and applications, version 2 (MERRA-2) reanalysis atmospheric products, together with the Moderate-resolution imaging spectroradiometer (MODIS) retrievals. The climatology of AOD(MERRA-2) is analyzed in three different contexts: the entire study domain (Pakistan), six regions within the domain, and 12 cities chosen from the entire study domain. The time-series analysis of the MODIS and MERRA-2 AOD data shows similar patterns in individual cities. The AOD and its seasonality vary strongly across Pakistan, with the lowest (0.05 +/- 0.04) and highest (0.40 +/- 0.06) in the autumn and summer seasons over the desert and the coastal regions, respectively. During the study period, the annual AOD trend increased between 0.002 and 0.012 year(-1). The increase of AOD is attributed to an increase in population and emissions from natural and/or anthropogenic sources. A general increase in the annual AOD over the central to lower Indus Basin is ascribed to the large contribution of dust particles from the desert. During winter and spring, a significant decrease in the AOD was observed in the northern regions of Pakistan. The MERRA-2 and MODIS trends (2002-2018) were compared, and the results show visible differences between the AOD datasets due to theuseof different versions and collection methods. Overall, the present study provides insight into the regional differences of AOD and its trends with the pronounced seasonal behavior across Pakistan.
英文关键词	MERRA-2 MODIS AOD driving factors Pakistan
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:000624435100001
WOS关键词	INDO-GANGETIC PLAIN ; SATELLITE-OBSERVATIONS ; RADIATIVE PROPERTIES ; MAINLAND CHINA ; TREND TEST ; 2 DECADES ; MODIS ; MISR ; CLIMATOLOGY ; VARIABILITY
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
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/2XILL650/351487
作者单位	[Khan, Rehana; Kumar, Kanike Raghavendra; Zhao, Tianliang; de Leeuw, Gerrit] Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Int Joint Lab Climate & Environm Change ILCEC,Sch, Key Lab Aerosol Cloud Precipitat,China Meteorol A, Nanjing 210044, Peoples R China; [Khan, Rehana] Govt Khyber Pakhtunkhwa, Dept Phys, Higher Educ, Peshawar 25000, Pakistan; [Kumar, Kanike Raghavendra] Koneru Lakshmaiah Educ Fdn KLEF, Dept Phys, Guntur 522502, Andhra Pradesh, India; [Ullah, Waheed] Nanjing Univ Informat Sci & Technol, Sch Geog Sci, Nanjing 210044, Peoples R China; [de Leeuw, Gerrit] Royal Netherlands Meteorol Inst KNMI, R&D Satellite Observat, NL-3731 GA De Bilt, Netherlands
推荐引用方式 GB/T 7714	Khan, Rehana,Kumar, Kanike Raghavendra,Zhao, Tianliang,et al. Interdecadal Changes in Aerosol Optical Depth over Pakistan Based on the MERRA-2 Reanalysis Data during 1980-2018[J]. 南京信息工程大学,2021,13(4).
APA	Khan, Rehana,Kumar, Kanike Raghavendra,Zhao, Tianliang,Ullah, Waheed,&de Leeuw, Gerrit.(2021).Interdecadal Changes in Aerosol Optical Depth over Pakistan Based on the MERRA-2 Reanalysis Data during 1980-2018.REMOTE SENSING,13(4).
MLA	Khan, Rehana,et al."Interdecadal Changes in Aerosol Optical Depth over Pakistan Based on the MERRA-2 Reanalysis Data during 1980-2018".REMOTE SENSING 13.4(2021).