Stratification and Size Distribution of Aerosols Retrieved from Simultaneous Measurements with Lidar, a SunPhotometer, and an Aureolemeter.
Stratification and Size Distribution of Aerosols Retrieved from Simultaneous Measurements with Lidar, a SunPhotometer, and an Aureolemeter.
复制标题
使用激光雷达、太阳光度计和光环计同时测量获得的气溶胶的分层和尺寸分布。
DOI：
10.1364/ao.37.000961
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发表时间：
1998
期刊：
影响因子：
1.9
通讯作者：
T. Takamura
中科院分区：
文献类型：
--
作者：
T. Hayasaka;Y. Meguro;Y. Sasano;T. Takamura
1991年11月至1992年12月，在日本筑波用激光雷达、太阳光度计和光度计同时测量了气溶胶的后向散射系数、光学厚度和柱状尺寸分布。在气溶胶粒径分布与分层之间的关系中发现了几个显著的特征。夏季以累积模式为主，气溶胶在行星边界层中负荷较大。春季在对流层中部观测到有大量大颗粒的浑浊大气。在秋季和冬季对流层是清晰的，因此柱状气溶胶的大小分布反映了平流层气溶胶。在观测期间，由于皮纳图博火山喷发而产生的火山气溶胶被装载到平流层。平流层气溶胶体积大小分布的模态半径由1991年11月的0.45 μ m增加到1992年10月的0.6 μ m， 1992年10月以后逐渐减小。平流层气溶胶总负荷在1992年春季最大，在1992年秋季最小，在1992年秋季之后又有所增加。
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 mum in November 1991 to 0.6 mum 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.