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首页> 外文期刊>Applied optics >Stratification and size distribution of aerosols retrieved from simultaneous measurements with lidar, a sunphotometer, and an aureolemeter
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Stratification and size distribution of aerosols retrieved from simultaneous measurements with lidar, a sunphotometer, and an aureolemeter

机译：通过激光雷达，日光光度计和光度计的同时测量获得的气溶胶的分层和尺寸分布

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Vertical profiles of backscattering coefficients, optical thicknesses, and columnar size distributions of aerosols were obtained by simultaneous measurements with lidar, a sunphotometer, and an aureolemeter in Tsukuba, Japan, from November 1991 to December 1992. Several conspicuous characteristics were found in the relationship between aerosol size distribution and stratification. In summer an accumulation mode is dominant, and aerosols were heavily loaded in the planetary boundary layer. Turbid atmospheres with an abundance of large particles are observed in the middle troposphere in the spring. In autumn and winter the troposphere is clear so that columnar aerosol size distributions reflect stratospheric aerosols. During the observation period, volcanic aerosols that are due to the Mt. Pinatubo eruption were being loaded in the stratosphere. The mode radius in the volume size distribution of the stratospheric aerosol was observed to increase from 0.45 mu m in November 1991 to 0.6 mu m in October 1992, and decreased after October 1992. Total aerosol loading in the stratosphere was estimated to be maximum in the spring of 1992, minimum in the autumn of 1992, and increased again after the autumn of 1992. (C) 1998 Optical Society of America. [References: 36]
机译：1991年11月至1992年12月，在日本筑波市，通过激光雷达，日光光度计和光度计的同时测量，获得了气溶胶的反向散射系数，光学厚度和柱状尺寸分布的垂直分布图。在两者之间的关系中发现了几个明显的特征气溶胶的大小分布和分层。在夏季，累积模式占主导地位，并且气溶胶在行星边界层中负荷较重。在春季的对流层中层观察到浑浊的大气，其中有大量的大颗粒。在秋季和冬季，对流层是晴朗的，因此柱状气溶胶的大小分布反映了平流层气溶胶。在观察期内，由于火山爆发的火山气溶胶。皮纳图博火山爆发正在平流层加载。平流层气溶胶体积尺寸分布的众数半径从1991年11月的0.45微米增加到1992年10月的0.6微米，并在1992年10月以后减小。平流层气溶胶的总载量估计在该时期最大。 1992年春季，最低于1992年秋季，并在1992年秋季后再次增加。（C）1998年美国光学学会。 [参考：36]

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