概括
1982年El Chichón火山爆发产生了大量的二氧化硫云. 尼姆布斯7卫星数据显示平流层云漂移,估计有330万二氧化硫.
科学领域:
- 火山学 火山学是一门学科.
- 大气化学 大气化学
- 遥感 遥感 遥感 遥感
背景情况:
- 1982年3月和4月,El Chichón火山发生了重大的喷发.
- 火山气体排放会影响大气组成和气候.
研究的目的:
- 通过Nimbus 7卫星数据分析El Chichón火山气体云.
- 为了确定火山云的体积,分散和组成.
主要方法:
- 使用了Nimbus 7总臭氧映射光谱仪 (TOMS).
- 分析了紫外线光谱反射率,以确定火山气体成分.
- 追踪了不同大气层的云分散模式.
主要成果:
- 观察到明显的热层和平流层火山云.
- 热带层云迅速向西分散;平流层云以高达13米/秒的速度向东漂移.
- 证实二氧化硫 (SO2) 是主要成分,估计3.3 x 10^6沉积在平流层.
结论:
- 尼布斯7TOMS数据提供了有效的火山云特性测量.
- 与以前的方法相比,这项研究提供了更准确的平流层二氧化硫注射估计.
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