Articles | Volume 19, issue 7
https://doi.org/10.5194/acp-19-4703-2019
https://doi.org/10.5194/acp-19-4703-2019
Research article
 | 
09 Apr 2019
Research article |  | 09 Apr 2019

Measurements of spectral irradiance during the solar eclipse of 21 August 2017: reassessment of the effect of solar limb darkening and of changes in total ozone

Germar Bernhard and Boyan Petkov

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Short summary
Solar radiation at ultraviolet, visible, and infrared wavelengths was measured during the total solar eclipse of 21 August 2017. Data were used to study the wavelength-dependent changes of solar radiation at Earth’s surface and to validate parameterizations of solar limb darkening (LD), which describes the change in the Sun’s brightness between its center and its edge. The study highlights the importance of the LD effect when calculating total ozone and aerosol optical depth during an eclipse.
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