Uncertainties in gas-phase atmospheric iodine chemistry
Uncertainties in gas-phase atmospheric iodine chemistry
复制标题
气相大气碘化学的不确定性
DOI:
10.1016/j.atmosenv.2012.04.032
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发表时间:
2012
影响因子:
5
通讯作者:
Sommariva R
中科院分区:
文献类型:
--
作者:
Sommariva R
We present a comprehensive chemical mechanism for gas-phase iodine, to be used for modelling tropospheric chemistry. The mechanism has been compiled from evaluated data and individual literature studies, where available; a number of key processes have not been studied experimentally or theoretically and in these cases estimations have been made. The uncertainty associated with these assumptions is evaluated. We analyze the mechanism using a box-model under a variety of boundary layer scenarios – representative of environments where iodine species have been observed – to study the response of the chemical system to changes in the kinetic parameters of selected reactions. We focus in particular on key species such as IO, OIO, INO3and I2Oyand the impact of iodine chemistry on ozone formation and HOxlevels. The results indicate that the chemical system is most sensitive to reactions leading to comparatively stable iodine compounds, which should be a focus of future laboratory studies.
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