Abstract
We develop an approach to create a model of the solar extreme ultraviolet spectrum in the wavelength range responsible for dissociation of molecular oxygen (115−242 nm). The model is based on the concept of the linear dependence of irradiance fluxes in intervals 1 nm in width on the intensity in the Lyman-alpha hydrogen line (this line is supposed to be measured by photometers of the extreme ultraviolet irradiance onboard space probes). The linear dependence coefficients were obtained for each of these intervals. Comparison of the model calculation results with observations showed that the model inaccuracy does not exceed 1−2%, which is sufficient for calculations of the thermospheric state.
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