Impact of halogen monoxide chemistry upon boundary layer OH and HO2 concentrations at a coastal site -: art. no. L06814
Impact of halogen monoxide chemistry upon boundary layer OH and HO2 concentrations at a coastal site -: art. no. L06814
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DOI：
10.1029/2004gl022168
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发表时间：
2005-03-30
影响因子：
5.2
通讯作者：
Fleming, ZL
中科院分区：
文献类型：
--
作者：
Bloss, WJ;Lee, JD;Fleming, ZL
氧化碘化学对沿海海洋边界层中OH和HO 2浓度的影响已使用NAMBLEX（北大西洋海洋边界层实验）活动的数据进行了评估，在梅斯黑德，爱尔兰在2002年夏天。观测约束计算表明，在NAMBLEX期间经历的低NOx条件下（NO），HOI + O-2占总HO 2自由基汇的40%，随后的HOI光解形成OH + I占总中午OH产生速率的15%。XO + HO 2（X = Br，I）反应可能在一定程度上解释了模型高估了在梅斯头以前的研究中测得的HO 2浓度，并应考虑在类似的沿海地区的HOx化学模型研究。
The impact of iodine oxide chemistry upon OH and HO2 concentrations in the coastal marine boundary layer has been evaluated using data from the NAMBLEX (North Atlantic Marine Boundary Layer Experiment) campaign, conducted at Mace Head, Ireland during the summer of 2002. Observationally constrained calculations show that under low NOx conditions experienced during NAMBLEX (NO HOI + O-2 accounted for up to 40% of the total HO2 radical sink, and the subsequent photolysis of HOI to form OH + I comprised up to 15% of the total midday OH production rate. The XO + HO2 (X = Br, I) reactions may in part account for model overestimates of measured HO2 concentrations in previous studies at Mace Head, and should be considered in model studies of HOx chemistry at similar coastal locations.