Sources and origins of aerosols reaching Antarctica as revealed by lead concentration profiles in shallow snow
Sources and origins of aerosols reaching Antarctica as revealed by lead concentration profiles in shallow snow
复制标题
浅雪中铅浓度分布揭示到达南极洲的气溶胶的来源和起源
作者：
C. Barbante;C. Turetta;A. Gambaro;G. Capodaglio;G. Scarponi
过去30年来，南极雪中铅浓度的变化被认为是环境对有充分记录的环境变化（向大气排放的铅减少）的反应。新的数据证实了先前研究所揭示的雪中铅浓度最近呈下降趋势。此外，比较铅浓度的变化，在南极雪层与铅排放从不同的人为来源，我们可以假设，在当今的气候条件下，铅富集气溶胶到达东南极洲的大西洋和太平洋部门主要来自南美洲和澳大利亚，分别。
Changes in the lead concentration in Antarctic snow over the past 30 years are considered as a response of the environment to a well-documented environmental change (decrease of lead emissions into the atmosphere). New data confirm the recent decreasing trend of lead concentration in snow as revealed by previous studies. Furthermore, comparing changes in the lead concentration in Antarctic snow layers with lead emissions from different anthropic sources, we can hypothesise that under present-day climatic conditions, lead-enriched aerosols reaching the Atlantic and Pacific sectors of East Antarctica originate mainly in South America and Australia, respectively.