Canadian Arctic air sampling data similarly exhibits high variability but the few available data are not inconsistent with the emission data, suggesting the atmosphere is an important transporting medium.
加拿大北极地区的空气采样数据同样也显示出很大变动，但是所得到的少量数据并不与排放量数据矛盾，这表明大气是一种重要的传播媒介。