The seasonal cycles and photochemistry of C2–C5 alkanes at Mace Head
The seasonal cycles and photochemistry of C2–C5 alkanes at Mace Head
复制标题
Mace Head 的 C2-C5 烷烃的季节循环和光化学
DOI：
10.1016/j.atmosenv.2010.04.043
复制
发表时间：
2010
影响因子：
5
通讯作者：
D. Shallcross
中科院分区：
文献类型：
--
作者：
E. Yates;R. Derwent;P. Simmonds;B. Greally;S. O'Doherty;D. Shallcross
连续原位测量的NMHC在梅斯头，爱尔兰在两个完整的年度周期，从2005年1月至2007年1月被用来调查NMHC排放源和运输，包括稀释和光化学氧化。梅斯黑德研究站地理位置优越，可以对各种各样的气团进行采样，包括受污染的欧洲运输、清洁的北大西洋和北极气团以及超清洁的南大西洋气团。在空气质量采样的变化是用来调查排放，运输，稀释和光化学的相互作用。长寿命碳氢化合物比率的变异性被用来评估和估计从排放源到梅斯头受体的典型运输时间。异构烷烃对（丁烷和戊烷）比率的季节性被用来评估大气迁移和光化学老化的影响。最后，NMHC比率的自然曲线用于评估光化学氧化。
Continuous in-situ measurements of NMHCs at Mace Head, Ireland during two full annual cycles from January 2005 to January 2007 were used to investigate NMHC emission sources and transport including dilution and photochemical oxidation. The Mace Head research station is ideally located to sample a wide range of air masses including polluted European transport, clean North Atlantic and Arctic air masses and the ultra-clean, Southern Atlantic air masses. The variety in air mass sampling is used to investigate interaction of emissions, transport, dilution and photochemistry. Variability of long-lived hydrocarbon ratios is used to assess and estimate typical transport times from emission source to the Mace Head receptor. Seasonality in the ratios of isomeric alkane pairs (for butane and pentanes) are used to assess the effects of atmospheric transport and photochemical ageing. Finally, the natural logarithms of NMHC ratios are used to assess photochemical oxidation.