Stratospheric aerosol change in the early stage of volcanic disturbance by the Pinatubo Eruption observed over Tsukuba, Japan
Stratospheric aerosol change in the early stage of volcanic disturbance by the Pinatubo Eruption observed over Tsukuba, Japan
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日本筑波上空观测到的皮纳图博火山喷发造成火山扰动早期的平流层气溶胶变化
DOI：
10.1029/93gl00511
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发表时间：
1993
影响因子：
5.2
通讯作者：
Y. Sasano
中科院分区：
文献类型：
--
作者：
S. Hayashida;Y. Sasano
日本国立环境研究所筑波（北纬36度，东经140度）的激光雷达从6月底开始观测到由于皮纳图博火山爆发（1991年6月12 - 15日，北纬15.14度，东经120.35度）导致的平流层气溶胶数量增加。1991年6月28日，也就是火山爆发仅两周后，在对流层顶上方观测到火山气溶胶层首次出现。7月和8月，20千米以上的气溶胶层偶尔出现，这反映了气溶胶分布的不均匀性。在风系从夏季东风转变为冬季西风之后，火山气溶胶层的主体出现在筑波上空。由于气溶胶从热带地区的输送，冬季积分后向散射系数（IBC）增加。IBC可转换为光学厚度，其超过了埃尔奇琼火山爆发后观测到的值的水平。参考文献15篇，图4幅
An increase in the amount of stratospheric aerosol due to the Pinatubo eruption (June 12-15, 1991, 15.14[degree]N, 120.35[degree]E) was observed from the end of June by a lidar in NIES, Tsukuba (36[degree]N, 140[degree]E). The first arrival of volcanic aerosol layers was observed just above the tropopause on June 28, 1991, only two weeks after the eruption. Aerosol layers higher than 20 km appeared sporadically in July and August, reflecting the inhomogeneity of aerosol distribution. After the change in the wind system from summer easterlies to winter westerlies, the main body of the volcanic aerosol layer made its appearance over Tsukuba. The integrated backscattering coefficient (IBC) increased in winter as a result of transportation of aerosols from the tropical region. The IBC, which can be converted to optical thickness, exceeded the level of the value observed after the El Chichon eruption. 15 refs., 4 figs.