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Aerosol optical properties derived from simultaneous sunphotometer and aureolemeter measurements in Lhasa

机译:拉萨同时进行日光光度计和光度计测量得出的气溶胶光学特性

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摘要

In order to obtain some aerosol properties in Tibetan Plateau atmosphere, simultaneous measurements of aerosols by use of a sunphotometer and an aureolementer were performed in the summer of 1998 in Lhasa (29.65 deg. N, 91.13 deg. E). Optical depth, volume size distribution and phase-function of aerosols were obtained from the measurements. Religious activities can have an effect on optical depth in Lhasa. The daily average aerosol optical depth (λ=500nm) is less than 0.2. The diurnal variations of aerosol optical depth are relatively small during the period of summer. The maximal value of the mode radius in the volume size distribution are about 0.4, 2.0 and 4.0μm.
机译:为了在青藏高原大气中获得一些气溶胶特性,1998年夏天在拉萨(北纬29.65度,东经91.13度)同时使用日光光度计和aureolementer对气溶胶进行了同时测量。通过测量获得了气溶胶的光学深度,体积大小分布和相函数。宗教活动会影响拉萨的视光深度。日平均气溶胶光学深度(λ= 500nm)小于0.2。在夏季,气溶胶光学深度的日变化相对较小。体积尺寸分布中的模半径的最大值约为0.4、2.0和4.0μm。

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