Solar UV flux measurements from the SBUV2 monitor on the NOAA9 satellite. Part 1: MG II H and K line core-to-wing ratios for 1986-1988

Details Solar UV flux measurements from the SBUV2 monitor on the NOAA9 satellite. Part 1: MG II H and K line core-to-wing ratios for 1986-1988 Solar UV flux measurements from the SBUV2 monitor on the NOAA9 satellite. Part 1: MG II H and K line core-to-wing ratios for 1986-1988

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994stin...9528007d&link_type=abstract

Technical Memo National Oceanic and Atmospheric Administration, Boulder, CO.

Computer Science

Backscattering, H Lines, K Lines, Light (Visible Radiation), Nimbus 7 Satellite, Photometry, Satellite Instruments, Solar Backscatter Uv Spectrometer, Solar Flux, Spectral Emission, Sun, H Alpha Line, Line Spectra, Linearity, Lyman Alpha Radiation, Radio Observation, Solar Spectra

Scientific paper

Analyses of the discrete-wavelength mode of observations of the solar full-disk MG 2 h and k line spectral irradiance measured by the Solar Backscatter UV Monitor (SBUV2) on the NOAA9 satellite are presented. Relative photometry techniques were used to derive a core-to-wing. This ratio has been modified, relative to that used by Heath and Schlesinger's (1986) classical MG 2 ratio derived for solar UV measurements made by their SBUV experiment aboard the Nimbus-7 satellite, to avoid inter-range instrumentation drifts encountered in the NOAA9 SBUV2 monitor. Prior research of the solar MG 2 h and k lines is reviewed. The raw measurements and observational parameters, such as the angle of the Sun as seen at the SBUV2 monitor are discussed. Temporal interpolations among the sets of discrete-mode measurements are used to account for most of the Sun-angle dependence and to reduce the sensitivity of the results to any errors in the Sun angles. Wavelength 'jitter' and long-term drift are studied, and intensity linearity and inter-range drift are analyzed. The NOAA9 results are compared with same-day Nimbus-7 data, the Kitt Peak Ca K1 angstrom index, the Canadian 10.7 cm solar radio flux, and observations of the solar H Lyman alpha line.

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