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首页> 外文期刊>Geophysical Research Letters >Dust and smoke transport from Africa to South America:Lidar profiling over Cape Verde and the Amazon rainforest
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Dust and smoke transport from Africa to South America:Lidar profiling over Cape Verde and the Amazon rainforest

机译：从非洲到南美的粉尘和烟雾运输：佛得角和亚马逊雨林上的激光雷达轮廓分析

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摘要

Quasi-simultaneous vertically resolved multiwavelength aerosol Raman lidar observations were conducted in the near field (Praia, Cape Verde, 15°N, 23.5°W) and in the far field (Manaus, Amazon basin, Brazil, 2.5°S, 60°W) of the longrange transport regime between West Africa and South America. Based on a unique data set (case study) of spectrally resolved backscatter and extinction coefficients,and of the depolarization ratio a detailed characterization of aerosol properties, vertical stratification, mixing, and aging behavior during the long-distance travel in February 2008 (dry season in western Africa, wet season in the Amazon basin) is presented. While highly stratified aerosol layers of dust and smoke up to 5.5 km height were found close to Africa, the aerosol over Manaus was almost well-mixed,reached up to 3.5 km, and mainly consisted of aged biomass burning smoke.
机译：在近场（普拉亚，佛得角，15°N，23.5°W）和远场（马瑙斯，巴西亚马逊河盆地，2.5°S，60°W）进行了准同时垂直分辨多波长气溶胶拉曼激光雷达观测）西非和南美之间的远程运输制度。基于光谱解析的反向散射和消光系数以及消偏振比的独特数据集（案例研究），详细描述了2008年2月（旱季）长途旅行期间的气溶胶特性，垂直分层，混合和老化行为在非洲西部，介绍了亚马逊盆地的雨季。虽然在非洲附近发现高度分层的尘埃和烟雾的气溶胶层高达5.5 km，但马瑙斯上空的气溶胶几乎完全混合，达到3.5 km，主要由老化的生物质燃烧烟组成。

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