Small Interannual Variability of Global Atmospheric Hydroxyl
Montzka, S. A. and Krol, M. and Dlugokencky, E. and Hall, B. and Jöckel, Patrick and Lelieveld, Jos (2011) Small Interannual Variability of Global Atmospheric Hydroxyl. Science, 133, pp. 67-69. DOI: 10.1126/science.1197640.
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Official URL: http://www.sciencemag.org/content/331/6013/67.short
The oxidizing capacity of the global atmosphere is largely determined by hydroxyl (OH) radicals and is diagnosed by analyzing methyl chloroform (CH3CCl3) measurements. Previously, large year-to-year changes in global mean OH concentrations have been inferred from such measurements, suggesting that the atmospheric oxidizing capacity is sensitive to perturbations by widespread air pollution and natural influences. We show how the interannual variability in OH has been more precisely estimated from CH3CCl3 measurements since 1998, when atmospheric gradients of CH3CCl3 had diminished as a result of the Montreal Protocol. We infer a small interannual OH variability as a result, indicating that global OH is generally well buffered against perturbations. This small variability is consistent with measurements of methane and other trace gases oxidized primarily by OH, as well as global photochemical model calculations.
|Title:||Small Interannual Variability of Global Atmospheric Hydroxyl|
|Date:||07 January 2011|
|Journal or Publication Title:||Science|
|In Open Access:||No|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 67-69|
|Keywords:||oxidation capacity, atmospheric chemistry, hydroxyl radical, atmospheric modeling|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Raumfahrt|
|HGF - Program Themes:||R EO - Erdbeobachtung|
|DLR - Research area:||Raumfahrt|
|DLR - Program:||R EO - Erdbeobachtung|
|DLR - Research theme (Project):||R - Vorhaben Atmosphären- und Klimaforschung|
|Institutes and Institutions:||Institute of Atmospheric Physics > Atmospheric Dynamics|
|Deposited By:||Patrick Jöckel|
|Deposited On:||21 Nov 2011 10:50|
|Last Modified:||07 Feb 2013 20:43|
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