Abstract
A comparative analysis of measurements of total solar flux in the active cavity radiometer irradiance monitor (ACRIM) and Physikalisch-Meteorologisches Observatorium Davos (PMOD) scales was performed. An analysis of integrated differences of simultaneous measurements of solar flux made it possible to estimate the systematic differences that can lead to the accumulation large errors with time. The measurements of solar flux in ACRIM and PMOD scales were reduced to an intermediate radiometric scale through data correction for systematic errors. The corrected measurements in the unified scale were consistent and there is a compromise between initial data sets. The measurements in the intermediate scale indicate changes in solar flux between the minima of solar activity in 1986, 1996, and 2008. The amplitude of these variations is comparable with uncertainty in their long-term trends, which questions earlier obtained estimates for secular variations of solar luminosity.
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Original Russian Text © A.V. Mordvinov, 2010, published in Solnechno-Zemnaya Fizika, 2010, Vol. 15, pp. 9–12.
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Mordvinov, A.V. Reduction of measurements of total solar flux to a unified scale and uncertainty in estimating its long-term trends. Geomagn. Aeron. 50, 933–936 (2010). https://doi.org/10.1134/S0016793210080025
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DOI: https://doi.org/10.1134/S0016793210080025