Peroxy radicals from photostationary state deviations and steady state calculations during the Tropospheric OH Photochemistry Experiment at Idaho Hill, Colorado, 1993
Peroxy radicals from photostationary state deviations and steady state calculations during the Tropospheric OH Photochemistry Experiment at Idaho Hill, Colorado, 1993
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1993 年科罗拉多州爱达荷山对流层 OH 光化学实验中来自光稳态偏差和稳态计算的过氧自由基
DOI：
10.1029/96jd01703
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发表时间：
1997
影响因子：
--
通讯作者：
J. Mather
中科院分区：
文献类型：
--
作者：
C. Cantrell;R. Shetter;J. Calvert;F. Eisele;E. Williams;K. Baumann;W. Brune;Phillip S. Stevens;J. Mather
1993年8月和9月在对流层羟基光化学实验期间，对过氧自由基和许多其他痕量气体的浓度进行了测量。痕量气体浓度被用于得出过氧自由基水平的两种估算值：与光稳态的偏差，以及在假定自由基浓度处于稳态的情况下进行的理论计算。与之前的许多研究一样，光稳态方法得出的中午过氧自由基水平约为测量值的两倍。进行了计算以根据输入参数的不确定性评估由光稳态得出的过氧自由基浓度的预期不确定性。测量值与稳态测定值之间的一致性优于光稳态估算值，测量值平均略高。从稳态计算中得出了低氮氧化物和高氮氧化物晴空条件下的自由基生成和销毁速率，结果展示了在清洁和受污染的大陆大气中控制过氧自由基水平的过程。
Concentrations of peroxy radicals and a number of other trace gases were measured during the Tropospheric OH Photochemistry Experiment in August and September, 1993. The trace gas concentrations were used to derive two estimates of peroxy radical levels: deviations from the photostationary state, and theoretical calculations with the assumption of steady state radical concentrations. As in many previous studies, the photostationary state method yielded midday peroxy radical levels about twice those measured. Calculations were performed to assess the expected uncertainty in the photostationary state derived peroxy radical concentrations from the uncertainty of the input parameters. The agreement between measurements and steady state determinations was better than the photostationary state estimates, with the measurements slightly higher on average. Radical formation and destruction rates for clear sky conditions with low and high NOx were derived from the steady state calculations and the results demonstrate the processes that control peroxy radical levels in clean and polluted continental atmospheres.