FTIR Measurements of Stratospheric Trace Species at Harestua, Norway, during 2002/2003
Abstract
Groundbased high resolution Solar FTIR measurements have been conducted at the complementary NDSC site Harestua (60.2oN, 10.8oE, 596 m.a.s.l.) in southern Norway as part of the NDSC network, since 1994. Total columns of HCl, HF, HNO3, ClONO2, N2O, COF2 and O3 will be presented for the last winter, in the context of earlier winters. The results will be compared to model simulations, as well as available measurements conducted by satellite instruments and other available observations. The FTIR measurements are performed using a Bruker 120 M high resolution (0.0035 cm-1) FT spectrometer connected to a coeliostat. Total columns, and vertical profiles obtained using information from the pressure broadened absorption lines, are retrieved using the softwares SFIT1 and SFIT21. This paper focuses on time variations in the data set that are interpreted in relation to vortex location and chemical processing of the chlorine and nitrogen species. REFERENCES 1. Connor, B., Retrieval of HCl and HNO3 Profiles from Ground-based FTIR data using SFIT2, in XVIII Quadrennial Ozone Symposium, R. D. Bojkov, and G. Visconti, International ozone commission, l'Aquila, 1996
- Publication:
-
EGS - AGU - EUG Joint Assembly
- Pub Date:
- April 2003
- Bibcode:
- 2003EAEJA.....6901S