Measurements of stratospheric OH at 308 nm with the sun as light source using a Fourier transform spectrometer

Justus Notholt; H. Schuett; A. Keens

doi:10.1117/12.274721

22 May 1997 Measurements of stratospheric OH at 308 nm with the sun as light source using a Fourier transform spectrometer

Justus Notholt, H. Schuett, A. Keens

Author Affiliations +

Proceedings Volume 3106, Spectroscopic Atmospheric Monitoring Techniques; (1997) https://doi.org/10.1117/12.274721
Event: Environmental Sensing III, 1997, Munich, Germany

Abstract

Measurements of stratospheric OH at 308 nm with the sun as light source have been carried out using a FTS. The spectra have been recorded in the high Arctic at Ny-Alesund during summer 1996. During clear sky conditions the spectra recorded with the FTS were found to be of sufficient quality with regard to the SNR of the analysis of OH. However, already slightly cloudy conditions increased the scintillation noise to an extent, preventing the OH analysis. The retrieval of the total OH columns was done in two ways; by studying single solar absorption spectra and by utilizing the Doppler shift of two spectra, recorded on the east and west side of the solar disk. The results of both methods agreed and gave total zenith OH columns of about 6 X 10¹³ molec. cm^-2 for SZA of 60 degrees.

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Justus Notholt, H. Schuett, and A. Keens "Measurements of stratospheric OH at 308 nm with the sun as light source using a Fourier transform spectrometer", Proc. SPIE 3106, Spectroscopic Atmospheric Monitoring Techniques, (22 May 1997); https://doi.org/10.1117/12.274721

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