DOI: 10.1016/j.atmosres.2019.03.007
Scopus记录号: 2-s2.0-85062976811
论文题名: Contribution to column-integrated aerosol typing based on Sun-photometry using different criteria
作者: Foyo-Moreno I. ; Alados I. ; Guerrero-Rascado J.L. ; Lyamani H. ; Pérez-Ramírez D. ; Olmo F.J. ; Alados-Arboledas L.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2019
卷: 224 起始页码: 1
结束页码: 17
语种: 英语
Scopus关键词: Location
; Particle size
; Particle size analysis
; Aerosol optical depths
; Aerosol particle size distribution
; Aerosol robotic networks
; Anthropogenic activity
; Classification methods
; Irradiance measurement
; Microphysical property
; Single scattering albedo
; Aerosols
; AERONET
; aerosol
; irradiance
; optical depth
; particle size
; photometer
; point source
; size distribution
; Europe
; Iberian Peninsula
; Sahara
英文摘要: This study analyses the aerosol optical and microphysical properties obtained by the Aerosol Robotic Network (AERONET) in seven different sites operating in the Iberian Peninsula during three coincident years (2010−2012) with the objective of studying different aerosol typing approaches. This area is of interest due to its location between the Sahara desert (the largest source of natural aerosols in the world) and mainland Europe (a relevant source of anthropogenic aerosols). In particular, we study the aerosol optical depth (AOD), Angström parameter (α 440–870 ) and fine mode fraction (FMF), which are estimated from direct sun irradiance measurements. Additionally, the single scattering albedo (ω o ) and aerosol particle size distribution (PSD), which are computed using additional sky radiances measurements under cloudless skies, are used in our analyses. The analyses show aerosol seasonal patterns in the AOD with maximum values in summer/spring and minimum values in winter/autumn for all the analysed stations. For α 440–870 , there are differences from site to site, with maximum values in winter and minimum values in summer for the southern locations, while there is not a remarkable pattern for the eastern locations close to the Mediterranean coast. The frequent and intense Saharan dust outbreaks over the southern Iberian Peninsula and the intense anthropogenic activity in the eastern urban locations are behind these seasonal patterns in the AOD and α 440–870 . In this work, two of the most employed classification schemes of aerosol type in the literature are used: one is based on the AOD and α 440–870, the other one is based on ω o at 440 nm and the FMF and a new classification scheme based on ω o at 440 nm and FMF is proposed. The results revealed that the new classification method is more appropriate for distinguishing the aerosol types that affect the Iberian Peninsula. The relationship derived here between Δω o = ω o (440)- ω o (1020) and the FMF is demonstrated to be useful for aerosol type classification when no measurements of the sky radiances, and consequently of ω o (440), are available. Alternatively, the relationship between the ratio Δω o /ω o (440) and the FMF can be used because (Δω o /ω o ) provides information about both the spectral ω o and the absolute values. © 2019 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122259
Appears in Collections: 气候变化事实与影响
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作者单位: Applied Physics Department, University of Granada, Fuentenueva s/n, Granada, 18071, Spain; Andalusian Institute for Earth System Research (IISTA-CEAMA), Avda. del Mediterráneo s/n, Granada, 18006, Spain; Applied Physics II Department, University of Málaga, Campus de Teatinos s/n, Málaga, 29071, Spain
Recommended Citation:
Foyo-Moreno I.,Alados I.,Guerrero-Rascado J.L.,et al. Contribution to column-integrated aerosol typing based on Sun-photometry using different criteria[J]. Atmospheric Research,2019-01-01,224