Publication Date:
1998-01-16
Description:
Laboratory studies show that the reaction of short-lived O2(B3Sigmau) molecules (lifetime approximately 10 picoseconds) with N2 and the photodissociation of the N2:O2 dimer produce NOx in the stratosphere at a rate comparable to the oxidation of N2O by O(1D). This finding implies the existence of unidentified NOX sinks in the stratosphere. The NO2 observed in this experiment is isotopically heavy with a large 15N/14N enhancement. However, photodissociation of this NO2 unexpectedly produced NO molecules with a low 15N/14N ratio. The diurnal odd-nitrogen cycle in the stratosphere will be marked by a complex isotope signature that will be imprinted on the halogen and HOX catalytic cycles.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zipf -- Prasad -- New York, N.Y. -- Science. 1998 Jan 9;279(5348):211-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉E. C. Zipf, Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USA. S. S. Prasad, Creative Research Enterprises, Post Office Box 174, Pleasanton, CA 94566, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9422690" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
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Chemistry and Pharmacology
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Computer Science
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Medicine
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Natural Sciences in General
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Physics
