DOI: 10.1016/j.atmosenv.2014.05.012
Scopus记录号: 2-s2.0-84901489900
论文题名: Extremely high aerosol loading over Arabian Sea during June 2008: The specific role of the atmospheric dynamics and Sistan dust storms
作者: Kaskaoutis D ; G ; , Rashki A ; , Houssos E ; E ; , Goto D ; , Nastos P ; T
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 94 起始页码: 374
结束页码: 384
语种: 英语
英文关键词: Arabian Sea
; Dust storms
; Remote sensing
; Severe AOD
; SPRINTARS
; Synoptic meteorology
Scopus关键词: Atmospheric aerosols
; Computer simulation
; Dust control
; Particulate emissions
; Remote sensing
; Satellite imagery
; Storms
; Arabian sea
; Dust storm
; Severe AOD
; SPRINTARS
; Synoptic meteorology
; Loading
; aerosol
; air mass
; dust storm
; Landsat
; MODIS
; optical depth
; satellite imagery
; simulation
; aerosol
; arabian sea
; article
; controlled study
; dust exposure
; dust storm
; land use
; marine environment
; meteorology
; mineral dust
; optical depth
; priority journal
; radiative forcing
; satellite imagery
; sea
; sea surface temperature
; seashore
; seasonal population dynamics
; seasonal variation
; weather
; wind
; Arabian Sea
; Asia
; Indian Ocean
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: This study focuses on analyzing the extreme aerosol loading and the mechanisms, source areas and meteorological conditions that favored the abnormal dust exposure towards Arabian Sea during June 2008. The analysis reveals that the spatial-averaged aerosol optical depth (AOD) over Arabian Sea in June 2008 is 0.5 (78.2%) higher than the 2000-2013 mean June value and is mostly attributed to the enhanced dust activity and several (18) dust storms originated from the Sistan region (Iran-Afghanistan borders). Landsat images show that the marshy lakes in Sistan basin got dried during the second half of June 2008 and the alluvial silt and saline material got easily eroded by the intense Levar winds, which were stronger (>15-20ms-1) than the climatological mean for the month of June. These conditions led to enhanced dust exposure from Sistan that strongly affected the northern and central parts of the Arabian Sea, as forward air-mass trajectories show. The NCEP/NCAR reanalysis reveals an abnormal intensification and spatial expansion of the Indian low pressure system towards northern Arabian Sea in June 2008. This suggests strengthening of the convection over the arid southwest Asia and exposure of significant amount of dust, which can reach further south over Arabian Sea favored by the enhanced cyclonic circulation. MODIS imagery highlighted several dust storms originated from Sistan and affecting Arabian Sea during June 2008, while the SPRINTARS model simulations of increased AOD and dust concentration over Sistan and downwind areas are in agreement with ground-based and satellite observations. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80904
Appears in Collections: 气候变化事实与影响
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作者单位: School of Natural Sciences, Department of Physics, Shiv Nadar University, Tehsil Dadri 203207, India; Natural Resources and Environment College, Ferdowsi University of Mashhad, Mashhad, Iran; Laboratory of Meteorology, Department of Physics, University of Ioannina, 45110 Ioannina, Greece; National Institute for Environmental Studies (NIES), Tsukuba, Ibaraki 305-8506, Japan; Laboratory of Climatology and Atmospheric Environment, Faculty of Geology and Geoenvironment, University of Athens, 15784 Zografou, Greece
Recommended Citation:
Kaskaoutis D,G,, Rashki A,et al. Extremely high aerosol loading over Arabian Sea during June 2008: The specific role of the atmospheric dynamics and Sistan dust storms[J]. Atmospheric Environment,2014-01-01,94