DOI: 10.1016/j.atmosenv.2014.07.001
Scopus记录号: 2-s2.0-84903773715
论文题名: Long-term (2003-2013) climatological trends and variations in aerosol optical parameters retrieved from MODIS over three stations in South Africa
作者: Kumar K ; R ; , Sivakumar V ; , Yin Y ; , Reddy R ; R ; , Kang N ; , Diao Y ; , Adesina A ; J ; , Yu X
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 95 起始页码: 400
结束页码: 408
语种: 英语
英文关键词: Aerosol optical depth
; Ångström exponent
; Fine mode fraction
; HYSPLIT
; MODIS
Scopus关键词: Atmospheric aerosols
; Satellite imagery
; Aerosol optical depths
; Aerosol optical parameters
; Aerosol optical property
; Fine mode fraction
; HYSPLIT
; Moderate resolution imaging spectroradiometer
; MODIS
; Spatial and temporal distribution
; Radiometers
; aerosol
; air mass
; annual variation
; atmospheric pollution
; climatology
; decadal variation
; long-term change
; MODIS
; optical property
; pollutant source
; spatiotemporal analysis
; aerosol
; aerosol optical depth
; air pollution control
; article
; autumn
; climate change
; controlled study
; law
; moderate resolution imaging spectroradiometer
; optical depth
; priority journal
; radiation detector
; satellite imagery
; seasonal variation
; South Africa
; spatiotemporal analysis
; spring
; summer
; winter
; South Africa
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: The present study is aimed to analyze the spatial and temporal distributions, and trends and variations in aerosol optical properties during the last decade. For this we used the aerosol optical depth (AOD550), Ångström exponent (AE, α470-660) and fine mode fraction (FMF) products derived from the Moderate resolution Imaging Spectroradiometer (MODIS) on board Terra satellite during the period December 2003-November 2013 over three different aerosol environments in South Africa (SA). The spatial pattern of annual mean AOD is characterized with high (low) AOD in the north (south) and with a moderate AOD in the central part of SA. A decadal decrease in AOD has been noticed by performing linear trend analysis over the three stations (Pretoria, Bloemfontein and Cape Town). The seasonal and inter-annual variability of AOD values over three locations of SA showed that the higher mean AOD values occurred during spring (September) and summer (January/February) seasons, whereas the lower values were found in the late autumn/early winter periods (June). On seasonal basis, the decadal climatological variations showed a decreasing trend in different seasons except during spring. The HYSPLIT back trajectory model was used to identify airmass transport pathways originated from aerosol source regions during the dry and wet seasons. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81209
Appears in Collections: 气候变化事实与影响
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作者单位: Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu Province, China; Discipline of Physics, School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Durban 4000, KwaZulu-Natal, South Africa; Aerosol and Atmospheric Research Laboratory, Department of Physics, Sri Krishnadevaraya University, Anantapur 515 003, Andhra Pradesh, India
Recommended Citation:
Kumar K,R,, Sivakumar V,et al. Long-term (2003-2013) climatological trends and variations in aerosol optical parameters retrieved from MODIS over three stations in South Africa[J]. Atmospheric Environment,2014-01-01,95