Variations of Solar Ultraviolet Irradiance Observed by the UARS SOLSTICE — 1991 to 1999
The Solar Stellar Irradiance Comparison Experiment (SOLSTICE) is one of ten instruments on the Upper Atmosphere Research Satellite (UARS) — one of two instruments measuring the solar ultraviolet irradiance. The instrument is a three channel spectrometer covering the spectral range 120 to 420 nm with a spectral resolution of approximately 0.2 nm. It has been successfully operating since October 1991, and has now provided more than eight years of data, extending from near the peak of solar cycle 22, through solar minimum and into the new cycle. The data provide time series that display solar variations over time scales from a few days up to the 11-year solar cycle. Quantitative estimates of amplitudes of both rotational modulation and the solar cycle variation in the 1991–1999 epoch are given for the UV spectrum between 119 and 300 nm.
KeywordsTime Series Spectral Range Solar Cycle Quantitative Estimate Spectral Resolution
Unable to display preview. Download preview PDF.
- Brueckner, G. E., Edlow, K. L., Floyd, L. E., Lean, J. L., and VanHoosier, M. E.: 1993, ‘The Solar Ultraviolet Spectral Irradiance Monitor (SUSIM) Experiment on Board the Upper Atmospheric Research Satellite (UARS)’, J. Geophys. Res. 98, 10,695–10,711.Google Scholar
- DeToma, G.,White, O.R., Knapp, B.G., Rottman, G. J., and Woods, T.N.: 1997, ‘Solar Mg II Coreto-Wing Index: Comparison of SBUV2 and SOLSTICE Time Series’, J. Geophys. Res. 102, 2597–2610.Google Scholar
- Harvey, K. L., and White, O.R.: 1999, ‘What is Solar Cycle Minimum?’, J. Geophys. Res. 104, 19,759–19,764.Google Scholar
- Heath, D. F., and Schlesinger, B. M.: 1986, ‘The Mg 280-nm doublet as a monitor of changes in the solar ultraviolet irradiance’, J. Geophys. Res. 91, 8672–8682.Google Scholar
- Mihalas, D., and Binney, J.: 1981, Galactic Astronomy Structure and Kinematics, W. H. Freeman, New York., pp. 135–139.Google Scholar
- Reber, C.: 1990, ‘The Upper Atmosphere Research Satellite (UARS)’, Geophys. Res. Letters 20, 1215–1218.Google Scholar
- Rottman, G. J., and Woods, T.N.: 1994, ‘UARS SOLSTICE’, SPIE Proceedings 2266, 317–327.Google Scholar
- Rottman, G. J., Woods, T.N., and Sparn, T. P.: 1993, ‘Solar Stellar Irradiance Comparison Experiment 1: 1. instrument design and operation’, J. Geophys. Res. 98, 10,667–10,678.Google Scholar
- Willson, R. C.: 1994, ‘Irradiance observations of SMM, Spacelab 1, UARS, and ATLAS experiments’, in J. M. Pap, C. Fröhlich, H. S. Hudson, and S.K. Solanki (eds.), The Sun as a Variable Star, Cambridge Univ. Press, Cambridge, pp. 54–62.Google Scholar
- Woods, T. N., Rottman, G. J., and Ucker, G. J.: 1993, ‘Solar Stellar Irradiance Comparison Experiment 1: 2. instrument calibration’, J. Geophys. Res. 98, 10,679–10,694.Google Scholar
- Woods, T. N, Prinz, D. K., Rottman, G. J., London, J., Crane, P. C., Cebula, R. P., Hilsenrath, E., Brueckner, G. E., Andrews, M. E., White, O. R., VanHoosier, M. E., Flyod, L. E., Herring, L.C., Knapp, B.G. Pankratz C.K., and Reiser, P.A.: 1996, ‘Validation of the UARS Solar Ultraviolet Irradiances: Comparison with the ATLAS–1, –2 Measurements’, J. Geophys. Res. 101, 9541–9569.Google Scholar