Transport of Asian air pollution to North America
Transport of Asian air pollution to North America
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DOI：
10.1029/1999gl900100
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发表时间：
1999-03-15
影响因子：
5.2
通讯作者：
Uno, I
中科院分区：
文献类型：
--
作者：
Jaffe, D;Anderson, T;Uno, I
利用华盛顿州西北部Cheeka Peak天文台1997年3-4月的观测，我们发现亚洲人为排放对春季到达北美的大气中大量物种的浓度有显著影响。等熵反向轨迹可以用来确定可能感受到这种影响的时间，但轨迹本身并不足以表明亚洲污染物的存在。其中一个时期(1997年3月29日)的详细化学和气象资料表明，地面排放物在大约6天内被提升到亚洲上空的自由对流层，然后输送到北美。
Using observations from the Cheeka Peak Observatory in northwestern Washington State during March-April, 1997, we show that Asian anthropogenic emissions significantly impact the concentrations of a large number of atmospheric species in the air arriving to North America during spring. Isentropic back-trajectories can be used to identify possible times when this impact will be felt, however trajectories alone are not sufficient to Indicate the presence of Asian pollutants. Detailed chemical and meteorological data from one of these periods (March 29th, 1997) indicates that the surface emissions were lifted into the free troposphere over Asia and then transported to North America in similar to 6 days.