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Tropospheric Oh and Cl Levels Deduced from Non-methane Hydrocarbon Measurements in a Marine Site : Volume 7, Issue 3 (11/05/2007)

By Arsene, C.

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Book Id: WPLBN0003997982
Format Type: PDF Article :
File Size: Pages 28
Reproduction Date: 2015

Title: Tropospheric Oh and Cl Levels Deduced from Non-methane Hydrocarbon Measurements in a Marine Site : Volume 7, Issue 3 (11/05/2007)  
Author: Arsene, C.
Volume: Vol. 7, Issue 3
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Kanakidou, M., Bonsang, B., Bougiatioti, A., Mihalopoulos, N., & Arsene, C. (2007). Tropospheric Oh and Cl Levels Deduced from Non-methane Hydrocarbon Measurements in a Marine Site : Volume 7, Issue 3 (11/05/2007). Retrieved from

Description: Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Greece. In situ continuous hourly measurements of C2-C8 non-methane hydrocarbons (NMHCS) have been performed from March to October 2006 at two coastal locations on the island of Crete, in the Eastern Mediterranean. Well defined diurnal variations were observed for several short lived NMHCS (including ethene, propene, n-butane, n-pentane, n-hexane, 2-methyl-pentane). The daytime concentration of hydroxyl (OH) radicals estimated from these experimental data varied from 1.3×106 to ~4.0×106 radical cm−3, in good agreement with box-model simulations. In addition the relative variability of various hydrocarbon pairs (at least 7) was used to derive the tropospheric levels of Cl atoms. The Cl atom concentration has been estimated to range between 0.6×104 and 4.7×104 atom cm−3, in good agreement with gaseous hydrochloric acid (HCl) observations in the area. Such levels of Cl atoms can be of considerable importance for the oxidation capacity of the troposphere on a regional scale.

Tropospheric OH and Cl levels deduced from non-methane hydrocarbon measurements in a marine site

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