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首页> 外文期刊>Atmospheric Chemistry and Physics Discussions >Column-integrated aerosol microphysical properties from AERONET Sun photometer over southwestern Spain
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Column-integrated aerosol microphysical properties from AERONET Sun photometer over southwestern Spain

机译：西班牙西南部AERONET太阳光度计的柱积分气溶胶微物理性质

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pstrongAbstract./strong The aim of the present work is to carry out a detailed analysis of columnar microphysical properties obtained from Cimel sun-photometer measurements in the Southwest of Spain within the frame of the Aerosol Robotic Network (AERONET) a?? Iberian Network for aerosol measurements (RIMA). AERONET level 2 inversion products are analysed, in particular the particle size distribution together with their associated microphysical parameters for both fine and coarse modes volume concentration, effective radius and the fine mode volume fraction. This work complements previous works based on aerosol optical depth (AOD) and the ??ngstr??m exponent (AE) for a global characterization of atmospheric aerosol in this area of southwestern Spain. brbr The analysed dataset spans between February 2000 and October 2008. Time series and statistical analysis has been carried out for these parameters in order to assess their typical values and seasonality together with their relationships with the AOD and AE. Mean values of volume particle concentration are 0.06?±0.07 ??msup3/sup ??msupa??2/sup for total, 0.019?±0.015 ??msup3/sup ??msupa??2/sup for fine and 0.04?±0.06 ??msup3/sup ??msupa??2/sup for coarse mode; mean effective radii are 0.40?±0.19 ??m for total, 0.14?±0.02 ??m for fine and 1.96?±0.41 ??m for coarse mode. brbr The most relevant features are the clear bimodality of the volume particle size distribution, with a slight dominance of the coarse mode in the overall climatology given the prevailing atmospheric conditions at the site (coastal marine). There is a clear prevalence of the coarse mode in summer months plus September and March, in coincidence with the occurrence of desert dust intrusions and highest AOD values. During desert dust outbreaks, the particle size distribution is practically monomodal with strong prevalence of the coarse mode which also shows a shift of the modal radius toward lower values. brbr The size particle predominance defines the characteristic of the site and it has been analysed under two different parameters the ??ngstr??m exponent and the fine mode volume fraction Vf/Vt. We investigated the relationship between them and also their relationship with the effective radius of the size distribution./p.
机译：> >摘要。本工作的目的是对通过气溶胶机器人网络（西班牙）在西班牙西南部的Cimel太阳光度计测量获得的柱状微物理特性进行详细分析（ AERONET）？？伊比利亚气溶胶测量网络（RIMA）。分析了AERONET 2级转化产物，特别是粒度分布以及它们的相关微物理参数，包括细模式和粗模式体积浓度，有效半径和细模式体积分数。这项工作是对先前基于气溶胶光学深度（AOD）和ngstrΔm指数（AE）进行的工作的补充，以对西班牙西南部地区的大气气溶胶进行全球表征。 分析的数据集跨度在2000年2月到2008年10月之间。为了评估它们的典型值和季节性以及它们与AOD和AE的关系，对这些参数进行了时间序列和统计分析。体积粒子浓度的平均值总计为0.06？±0.07 ?? m 3 ?? m a ?? 2 总计为0.019？±0.015 ?? m 3 ?? m a ?? 2 表示精细，而0.04？±0.06 ?? m 3 ?? m a ?? 2 用于粗模式平均有效半径总计为0.40？±0.19？m，精细模式为0.14？±0.02？m，粗模式为1.96？±0.41？m。 最相关的特征是体积粒度分布的明显双峰性，鉴于现场（沿海海洋）的主要大气条件，在总体气候中粗略模式略有优势。在夏季月份加上9月和3月，粗模式明显流行，这与沙漠尘埃侵入和最高AOD值一致。在沙漠尘埃暴发期间，粒径分布实际上是单峰分布，粗模式普遍存在，这也表明模式半径向较低值移动。 颗粒的主要颗粒大小决定了该位点的特征，并已在两个不同的参数下分析了ΔngstrΔm指数和精细模式体积分数Vf / Vt。我们研究了它们之间的关系，以及它们与尺寸分布有效半径的关系。。

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