QUANTUM YIELDS OF O(D-1) IN THE PHOTOLYSIS OF OZONE BETWEEN 289 AND 329 NM AS A FUNCTION OF TEMPERATURE

Authors
TALUKDAR RK LONGFELLOW CA GILLES MK RAVISHANKARA AR
Citation
Rk. Talukdar et al., QUANTUM YIELDS OF O(D-1) IN THE PHOTOLYSIS OF OZONE BETWEEN 289 AND 329 NM AS A FUNCTION OF TEMPERATURE, Geophysical research letters, 25(2), 1998, pp. 143-146
Citations number
21
Categorie Soggetti
Geosciences, Interdisciplinary
Journal title
Geophysical research letters → ACNP
ISSN journal
00948276
Volume
25
Issue
2
Year of publication
1998
Pages
143 - 146
Database
ISI
SICI code
0094-8276(1998)25:2<143:QYOOIT>2.0.ZU;2-G
Abstract
The quantum yields for O(D-1) production in O-3 photolysis between 203 and 320 K, and 289 to 329 nm were measured. A portion of the observed O(D-1) quantum yields at wavelengths greater than 310 nm is attribute d to a spin-forbidden channel and the variation of quantum yield with temperature is ascribed to photodissociation of vibrationally (or rota tionally) excited ozone. Our results yield atmospheric O(D-1) producti on rates larger than those obtained from current recommendations, espe cially at high solar zenith angles, low temperatures, and large overhe ad ozone columns.