IDENTIFICATION OF WIDESPREAD POLLUTION IN THE SOUTHERN-HEMISPHERE DEDUCED FROM SATELLITE ANALYSES
IDENTIFICATION OF WIDESPREAD POLLUTION IN THE SOUTHERN-HEMISPHERE DEDUCED FROM SATELLITE ANALYSES
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DOI：
10.1126/science.252.5013.1693
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发表时间：
1991-06-21
期刊：
影响因子：
56.9
通讯作者：
NGANGA, D
中科院分区：
文献类型：
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作者：
FISHMAN, J;FAKHRUZZAMAN, K;NGANGA, D
从布拉柴维尔、刚果（南纬4度，东经15度）和Ascension岛（南纬8度，西经15度）的臭氧探测仪获得的臭氧垂直廓线表明，在南部非洲和邻近的热带南大西洋东部存在大量的对流层臭氧。这种污染的根源是非洲广泛的生物质燃烧。这些测量结果支持了从卫星获得的对流层臭氧数据，这些数据表明，源自该区域的臭氧在南半球的大部分地区被传输。在非洲、澳大利亚和南极洲的中纬度和高纬度观测站观测到的一氧化碳和甲烷的季节性高水平可能反映了这种遥远的生物质燃烧的影响。这些数据表明，即使是地球上最偏远的地区也可能比以前认为的污染严重得多。
Vertical profiles of ozone obtained from ozonesondes in Brazzaville, Congo (4-degrees-S, 15-degrees-E), and Ascension Island (8-degrees-S, 15-degrees-W) show that large quantities of tropospheric ozone are present over southern Africa and the adjacent eastern tropical South Atlantic Ocean. The origin of this pollution is widespread biomass burning in Africa. These measurements support satellite-derived tropospheric ozone data that demonstrate that ozone originating from this region is transported throughout most of the Southern Hemisphere. Seasonally high levels of carbon monoxide and methane observed at middle- and high-latitude stations in Africa, Australia, and Antarctica likely reflect the effects of this distant biomass burning. These data suggest that even the most remote regions on this planet may be significantly more polluted than previously believed.