Dobson spectrophotometer total ozone measurement errors caused by interfering absorbing species such as SO2, NO2, and photochemically produced O3 in polluted air
Dobson spectrophotometer total ozone measurement errors caused by interfering absorbing species such as SO2, NO2, and photochemically produced O3 in polluted air
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DOI：
10.1029/gl007i002p00157
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发表时间：
1980-02
影响因子：
5.2
通讯作者：
W. Komhyr;R. Evans
中科院分区：
文献类型：
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作者：
W. Komhyr;R. Evans
在污染空气中用多布森臭氧计进行的臭氧总量测量会受到吸收太阳紫外线辐射的干扰痕量气体种类造成的误差。虽然这种干扰在全世界大多数多布森仪器站可能不存在或很小，但在位于污染严重的大气中的少数几个站，由于SO2和NO2的吸收，可能偶尔会出现高达25%和5%的误差。其他吸收剂，包括N2O5，H2O2，HNO3，乙醛，丙酮和丙烯醛的干扰已被发现是可以忽略的。在受污染的近地面空气中，光化学作用产生的臭氧有时可能占大气臭氧总柱的5%至10%。这种臭氧干扰大气背景臭氧总量的测量。
Total ozone measurements made with Dobson spectrophotometers in polluted air are subject to errors caused by interfering trace gas species that absorb solar ultraviolet radiation. While such interference is probably non-existent or small at the majority of Dobson instrument stations throughout the world, errors of up to 25% and 5%, resulting from absorption by SO2 and NO2 respectively, may occur occasionally at a few stations located in extremely polluted atmospheres. Interference by other absorbers, including N2O5, H2O2, HNO3, acetyldehyde, acetone, and acrolein has been found to be negligible. Ozone produced photochemically in polluted near-surface air may occasionally constitute from 5% to 10% of the atmospheric total ozone column. Such ozone interferes with measurements of atmospheric background total ozone.