On the integration of intensity measurements of the solar center and limb near 300 nanometers |
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| Authors: | Kenneth Moe |
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| Institution: | 1. Consulting Atmospheric Physicist, 1520 Sandcastle Drive, 92625, Corona del Mar, CA, USA
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| Abstract: | Two methods of integrating limb-darkening data to calculate the spectral irradiance are compared. Near 300 nm Moe and Milone's (1978) quadratic approximation to the limb darkening yields an integral 3% larger on average than the two linear segments of Kohl et al. (1980) when the same data are inserted in both formulas. As one would expect, the difference between the two calculations is directly proportional to Moe and Milone's quadratic coefficient. When Moe and Milone's data are inserted in the formula of Kohl et al., the calculated irradiance is 4% higher than when the data of Kohl et al. are used in the same formula. Possible reasons for this difference are suggested. |
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