GROUNDBASED SPECTROSCOPIC MEASUREMENTS OF STRATOSPHERIC NO2 AND OCLO IN ARCTIC WINTER 1989 90

Authors
FIEDLER M FRANK H GOMER T HAUSMANN M PFEILSTICKER K PLATT U
Citation
M. Fiedler et al., GROUNDBASED SPECTROSCOPIC MEASUREMENTS OF STRATOSPHERIC NO2 AND OCLO IN ARCTIC WINTER 1989 90, Geophysical research letters, 20(10), 1993, pp. 963-966
Citations number
15
Categorie Soggetti
Geosciences, Interdisciplinary
Journal title
Geophysical research letters → ACNP
ISSN journal
00948276
Volume
20
Issue
10
Year of publication
1993
Pages
963 - 966
Database
ISI
SICI code
0094-8276(1993)20:10<963:GSMOSN>2.0.ZU;2-Y
Abstract
During January and February 1990 ground-based UV / visible spectroscop ic observations of direct moon light and zenith scattered sun light we re performed near Kiruna, Sweden at 67.9-degrees-N, 21.1-degrees-E. Fr om the measured differential absorption of NO2 and OClO the correspond ing slant column abundances were determined and converted to vertical column densities using airmass factors evaluated by a ray tracing mode l. Upper limits for the stratospheric NO2 column of 0.4 - 0.9 . 10(15) /cm2 were deduced and elevated levels of OClO could be detected during Feb. 6 - 8.