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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Ruiz-lópez, Manuel F. Anglada, Josep M. Martins-costa, Marilia Francisco, Joseph S. |
| Description | Author Affiliation: Anglada JM ( Departament de Química Biològica i Modelització Molecular (Institut de Química Avançada de Catalunya-Consejo Superior de Investigaciones Cientificas), E-08034 Barcelona, Spain); Martins-Costa M ( Laboratoire Structure et Réactivité des Systèmes Moléculaires Complexes, University of Lorraine, 54506 Vandoeuvre-lès-Nancy, France); Ruiz-López MF ( Laboratoire Structure et Réactivité des Systèmes Moléculaires Complexes, University of Lorraine, 54506 Vandoeuvre-lès-Nancy, France); Francisco JS ( Department of Chemistry, Purdue University, West Lafayette, IN 47907-2084 anglada@iqac.csic.es Marilia.Martins-Costa@univ-lorraine.fr Manuel.Ruiz@univ-lorraine.fr francisc@purdue.edu.); |
| Abstract | First-principles simulations suggest that additional OH formation in the troposphere can result from ozone interactions with the surface of cloud droplets. Ozone exhibits an affinity for the air–water interface, which modifies its UV and visible light spectroscopic signatures and photolytic rate constant in the troposphere. Ozone cross sections on the red side of the Hartley band (290- to 350-nm region) and in the Chappuis band (450–700 nm) are increased due to electronic ozone–water interactions. This effect, combined with the potential contribution of the $O_{3}$ + hν → $O(^{3}P)$ + $O_{2}(X^{3}Σ_{g}^{−})$ photolytic channel at the interface, leads to an enhancement of the OH radical formation rate by four orders of magnitude. This finding suggests that clouds can influence the overall oxidizing capacity of the troposphere on a global scale by stimulating the production of OH radicals through ozone photolysis by UV and visible light at the air–water interface. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 32 |
| Volume Number | 111 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2014-08-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Atmosphere Chemistry Ozone Radiation Effects Gases Hydroxyl Radical Photochemical Processes Photolysis Spectrophotometry Spectrophotometry, Ultraviolet Ultraviolet Rays Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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