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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >LITE and SAGE II measurements of aerosols in the southern hemisphere upper troposphere
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LITE and SAGE II measurements of aerosols in the southern hemisphere upper troposphere

机译：LITE和SAGE II对南半球对流层上层气溶胶的测量

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Two global satellite data sets have been used to characterize the behavior of aerosols in the upper troposphere of the southern hemisphere during the spring season. The first data set was obtained by the Lidar-In-Space Technology Experiment (LITE) during 10 days in September 1994 and provides high-resolution information about aerosol layering and optical characteristics. The second data set was obtained by the Stratospheric Aerosol and Gas Experiment (SAGE) II over the time period 1984-1996 and provides information on the aerosol distribution and longterm climatology. During September, elevated aerosol layers are found to occur within a latitude band between 20 degrees S and 40 degrees S that extends to almost all longitudes. The latitude and altitude distribution and the optical characteristics of the aerosol suggest that a major source is smoke from biomass burning within the southern hemisphere. This conclusion is supported by the results of back-trajectory analyses that show airmasses originating in the region of southern Africa and traveling longitudinally across the Indian Ocean and Australia into the western Pacific Ocean. The dominant source of the smoke is uncertain, but quite possibly some of it may have originated from Brazil, with additions from southern Africa. The aerosol distribution shows strong similarities to published distributions for ozone and carbon monoxide, also believed to have originated from biomass burning. [References: 50]
机译：在春季，已经使用了两个全球卫星数据集来表征南半球对流层上部气溶胶的行为。第一个数据集是由1994年9月的10天激光雷达太空技术实验（LITE）获得的，提供了有关气溶胶分层和光学特性的高分辨率信息。第二个数据集是通过1984-1996年的平流层气溶胶和气体实验（SAGE）II获得的，并提供了有关气溶胶分布和长期气候学的信息。在九月期间，发现升高的气溶胶层出现在南纬20度到40度之间的纬度带内，延伸到几乎所有经度。气溶胶的纬度和高度分布以及光学特征表明，主要来源是南半球燃烧的生物质所产生的烟雾。该结论得到反向轨迹分析结果的支持，该分析表明气团起源于南部非洲地区，并纵向穿越印度洋和澳大利亚进入西太平洋。烟雾的主要来源尚不确定，但很可能其中一部分可能来自巴西，另外一些来自南部非洲。气溶胶分布与已公布的臭氧和一氧化碳分布显示出极大的相似性，据信这些分布也源自生物质燃烧。 [参考：50]

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