Observations of boreal forest fire smoke in the stratosphere by POAM III, SAGE II, and lidar in 1998
Observations of boreal forest fire smoke in the stratosphere by POAM III, SAGE II, and lidar in 1998
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DOI：
10.1029/1999gl011200
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发表时间：
2000-05-01
影响因子：
5.2
通讯作者：
Stocks, B
中科院分区：
文献类型：
--
作者：
Fromm, M;Alfred, J;Stocks, B
1998年5月至10月，在北纬55度至70度之间，平流层浮质大量增加。这一现象是在没有报告的具有平流层影响潜力的火山爆发的情况下记录的。FOAM III和SAGE II仪器对对流层顶上方3至5公里处的气溶胶消光增强层进行了多次测量，这些层的消光值大大高于典型值。将这些观测结果与激光雷达剖面、TOMS气溶胶指数数据和森林火灾统计数据进行比较，揭示了平流层气溶胶和森林火灾烟雾之间的密切联系。我们的分析强烈表明，烟雾从北方森林火灾在对流层顶大量的几个事件发生在加拿大和俄罗斯东部。观测结果显示，平流层气溶胶呈带状广泛增加，并持续了至少三个月。
A substantial increase in stratospheric aerosol was recorded between May and October 1998 between 55 degrees and 70 degrees N. This phenomenon was recorded in the absence of reported volcanic eruptions with stratospheric impact potential. The FOAM III and SAGE II instruments made numerous measurements of layers of enhanced aerosol extinction substantially higher than typical values 3 to 5 km above the tropopause. A comparison of these observations with lidar profiles, TOMS aerosol index data, and forest fire statistics reveals a strong link between stratospheric aerosol and forest fire smoke. Our analysis strongly suggests that smoke from boreal forest fires was lofted across the tropopause in substantial amounts in several episodes occurring in Canada and eastern Russia. Observations reveal a broad zonal increase in stratospheric aerosol that persisted for at least three months.