The 2001 Asian dust events: Transport and impact on surface aerosol concentrations in the U.S.
The 2001 Asian dust events: Transport and impact on surface aerosol concentrations in the U.S.
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DOI：
10.1029/2003eo460001
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发表时间：
2003-11
期刊：
影响因子：
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通讯作者：
Dan Jaffe;Julie Snow;O. Cooper
中科院分区：
文献类型：
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作者：
Dan Jaffe;Julie Snow;O. Cooper
2001 年 4 月的一次运输事件将大量矿物尘埃从亚洲沙漠带到了美国大气边界层 (ABL)。美国整个 ABL 地区都出现了大量的粉尘，而且浓度几乎没有降低。据估计，2001 年 4 月中旬美国大陆 ABL 中的亚洲沙尘量为 1.1 E5 吨，这一数值与美国所有直径小于 10 微米的颗粒物 (PM) 来源 (PM 10) 的日排放通量相当。在一些地区，亚洲的沙尘与当地的污染相结合，使城市PM2.5浓度升高到对健康产生不利影响的水平。 2001 年 4 月的事件似乎是美国有史以来观察到的最大的亚洲沙尘事件，其影响证明必须在全球范围内看待空气污染问题。
A transport event in April 2001 brought substantial quantities of mineral dust from Asian deserts to the U.S. atmospheric boundary layer (ABL). The dust was seen in large amounts throughout the ABL in the U.S., with almost no reduction in concentrations. It was estimated that the amount of Asian dust in the continental U.S. ABL in mid-April 2001 was 1.1 E5 metric tons, a value comparable to the daily emission flux of all U.S. sources of particulate matter (PM) less then 10 μm diameter (PM 10). In some regions, the Asian dust, combined with local pollution, elevated urban PM to levels associated with adverse health effects. The April 2001 event appears to be the largest Asian dust event ever observed in the U.S., and its effects provide evidence that air pollution issues must be viewed in a global context.