5. Stratospheric Ozone: An Introduction to Its Study
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The article was published on 2014-03-03 and is currently open access. It has received 0 citations till now. The article focuses on the topics: Ozone layer.read more
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Electronically excited oxygen atoms, O(21D2). A time‐resolved study of the collisional quenching by the gases H2, D2, CH4, NO, NO2, N2O, and C3O2 using atomic absorption spectroscopy in the vacuum ultraviolet
R. F. Heidner,David Husain +1 more
TL;DR: In this article, the absolute second-order rate constants describing the removal of the excited atom on collision with the molecules H2, D2, CH4, NO, NO2, N2O, and C3O2 were reported.
Journal ArticleDOI
Mass Spectrometric Study of the Reaction of Hydroxyl Radical with Formaldehyde
E. D. Morris,H. Niki +1 more
Journal ArticleDOI
Predicted present stratospheric abundances of chlorine species from photodissociation of carbon tetrachloride
Mario J. Molina,F. S. Rowland +1 more
Abstract: We have calculated that stratospheric photodissociation in the 1950–2250 A range removes CCl4 at a rate corresponding to an atmospheric lifetime of 30-50 years. Whether CCl4 is of natural or anthropogenic (in use since early 1900's) origin, the ratios between it and its photodissociation products should be approximately those characteristic of a steady state. The present level of 7 × 10−11 v/v for CCl4 in tropospheric air can thus be used to estimate the present minimum levels of HCl, ClO, and Cl which should be present in the stratosphere from the photodissociation of CCl4. The current average HCl concentration is predicted to be about 10−10 v/v above 30 kms from this source, while ClO is predicted to approach 10−10 v/v near 35 kms.
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Kinetics of the reaction OH (v = 0) + O3 → HO2 + O2
TL;DR: In this paper, the rate constant of the reaction HO 2 + O 3 HO 2+O 2 + 2O 2 was measured over the temperature range from 220 to 450°K at total pressures between 2 and 5 torr.
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Perchloric acid: A possible sink for stratospheric chlorine
R. Simonaitis,Julian Heicklen +1 more
TL;DR: In this article, an important removal mechanism for chlorine in the stratosphere may be the formation of HClO4 via the sequence of steps Cl + O2 + O3 → ClO3+O2+O3 +O2 ClO 3 + OH → HCl O4.