...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Geophysical Research, C. Oceans: JGR >Eruption of the Eyjafjallaj?kull Volcano in spring 2010: Multiwavelength Raman lidar measurements of sulphate particles in the lower troposphere
【24h】

Eruption of the Eyjafjallaj?kull Volcano in spring 2010: Multiwavelength Raman lidar measurements of sulphate particles in the lower troposphere

机译：2010年春季Eyjafjallaj？kull火山爆发：对流层下部硫酸盐颗粒的多波长拉曼激光雷达测量

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A fraction of the volcanic plume that originated from the Eyjafjallaj?kull volcanic eruption on Iceland in 2010 reached the southern Iberian Peninsula in May 2010. The plume was monitored and characterized in terms of optical and microphysical properties with a combination of Raman lidar and star- and Sun-photometers. Our observations showed that the plume arriving at the Iberian Peninsula was mainly composed of sulphate and sulphuric-acid particles. To our knowledge, this is the first study of optical properties and inverted microphysical properties of volcanic sulphate particles in the lower troposphere/boundary layer based on multiwavelength Raman lidar measurements. A remarkable increase in the particle number concentration in the accumulation mode was determined from the inversion of the aerosol optical properties. The large ?ngstr?m exponents and low linear particle depolarization ratios (4-7%) indicated the presence of small and spherical particles. The particle effective radii ranged between 0.30 and 0.55 μm. In situ instrumentation confirmed an increase of sulphate particles at ground level during this period. Key PointsMicrophysical properties of Eyjafjallaj?kull volcanic sulphate particlesMonitoring of volcanic plumes by Raman lidar systemPresence of small and spherical particles in the volcanic plume
机译：源自2010年冰岛Eyjafjallaj？kull火山喷发的一部分火山羽流于2010年5月到达伊比利亚半岛南部。结合拉曼激光雷达和恒星雷达，对羽流的光学和微物理性质进行了监测和表征。和太阳光度计。我们的观察表明，到达伊比利亚半岛的羽流主要由硫酸盐和硫酸颗粒组成。据我们所知，这是首次基于多波长拉曼激光雷达测量对流层下层/边界层中硫酸硫酸盐颗粒的光学性质和反向微物理性质的研究。由气溶胶光学性质的反转确定了在累积模式下颗粒数浓度的显着增加。大的指数指数和低的线性颗粒去极化率（4-7％）表明存在小的球形颗粒。颗粒有效半径在0.30和0.55μm之间。在此期间，现场仪器证实了地面硫酸盐颗粒的增加。 Eyjafjallaj？kull火山硫酸盐颗粒的微观物理特性通过拉曼激光雷达系统监测火山羽流火山羽流中是否存在球形小颗粒

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号