Stratospheric ozone destruction: The importance of bromine relative to chlorine
نویسندگان
چکیده
منابع مشابه
Contribution of VSLS to stratospheric chlorine and bromine
The total stratospheric organic chlorine and bromine burden was derived from balloon-borne measurements in the tropics (Teresina, Brazil, 5 • 04 ′ S, 42 • 52 ′ W) in 2005. Whole air samples were collected cryogenically at altitudes between 15 and 34 km. For the first time, we report measurements of a set of 28 chlorinated and brominated sub-5 stances in the tropical upper troposphere and strato...
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We present observations defining (i) the frequency and depth of convective penetration of water into the stratosphere over the United States in summer using the Next-Generation Radar system; (ii) the altitude-dependent distribution of inorganic chlorine established in the same coordinate system as the radar observations; (iii) the high resolution temperature structure in the stratosphere over t...
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Mixing ratios of water (H2O) in the stratosphere appear to increase due to increased input of H2O and methane from the troposphere and due to intensified oxidation of CH4 in the stratosphere, but many of the underlying mechanisms are not yet understood. Here we identify and quantify three chemical mechanisms which must have led to more efficient oxidation of CH4 in the stratosphere over the pas...
متن کاملVSLS contribution to stratospheric chlorine
Y. Mébarki, V. Catoire, G. Berthet, N. Huret, and C. Robert Laboratoire de Physique et Chimie de l’Environnement et de l’Espace (LPC2E), UMR 6115 CNRS – Université d’Orléans, 45071 Orléans cedex 2, France Received: 11 July 2009 – Accepted: 21 July 2009 – Published: 29 July 2009 Correspondence to: V. Catoire ([email protected]) Published by Copernicus Publications on behalf of the E...
متن کاملThe 2010 Antarctic ozone hole: Observed reduction in ozone destruction by minor sudden stratospheric warmings
Satellite observations show that the 2010 Antarctic ozone hole is characterized by anomalously small amounts of photochemical ozone destruction (40-60% less than the 2005-2009 average). Observations from the MLS instrument show that this is mainly related to reduced photochemical ozone destruction between 20-25 km altitude. Lower down between 15-20 km the atmospheric chemical composition and ph...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Atmospheres
سال: 1999
ISSN: 0148-0227
DOI: 10.1029/1999jd900381