globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo2199
论文题名:
Maximum efficiency in the hydroxyl-radical-based self-cleansing of the troposphere
作者: Rohrer F.; Lu K.; Hofzumahaus A.; Bohn B.; Brauers T.; Chang C.-C.; Fuchs H.; Häseler R.; Holland F.; Hu M.; Kita K.; Kondo Y.; Li X.; Lou S.; Oebel A.; Shao M.; Zeng L.; Zhu T.; Zhang Y.; Wahner A.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2014
卷: 7, 期:8
起始页码: 559
结束页码: 563
语种: 英语
英文摘要: The removal of trace gases from the troposphere is, in most cases, initialized by reactions with hydroxyl radicals, and the products of these reactions are eventually deposited on the Earth's surface. The concentration of these hydroxyl radicals is therefore a measure of atmospheric self-cleansing. In theory, hydroxyl-radical concentrations can be enhanced by the recycling of some of the reaction products. The only known efficient recycling process involves nitrogen oxide and leads to production of ozone, yet observations in regions with high hydrocarbon and low nitrogen oxide concentrations show substantially elevated hydroxyl-radical concentrations, up to ten times higher than expected. If we normalize observed hydroxyl-radical concentrations to the maximum achievable in model calculations with variable nitrogen oxide concentrations, this photochemical coordinate system uncovers a common feature in almost all of these observations: even in the presence of inadequate amounts of nitrogen oxides, hydroxyl-radical concentrations are enhanced to the theoretical maximum obtainable at very much higher nitrogen oxide concentrations. This means that this important part of the self-cleansing capability of the atmosphere is working at maximum efficiency even in regions with a high burden of biogenic hydrocarbons and low nitrogen oxide concentration. Since these processes do not involve nitrogen oxides, tropospheric ozone production is greatly reduced compared with the expectation from current theory. © 2014 Macmillan Publishers Limited.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106469
Appears in Collections:气候减缓与适应
科学计划与规划

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作者单位: Forschungszentrum Jülich, Institut IEK-8: Troposphäre, 52425 Jülich, Germany; State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, China; Research Center for Environmental Changes (RCEC), Academic Sinica, Taipei, Taiwan; Faculty of Science, Ibaraki University, Ibaraki 310-8512, Japan; Research Center for Advanced Science and Technology, University of Tokyo, Tokyo 153-8904, Japan; Shanghai Academy Of Environmental Sciences, Shanghai, China

Recommended Citation:
Rohrer F.,Lu K.,Hofzumahaus A.,et al. Maximum efficiency in the hydroxyl-radical-based self-cleansing of the troposphere[J]. Nature Geoscience,2014-01-01,7(8)
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