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Title:
A comparison of measured and simulated solar network contrast
Authors:
Afram, N.; Unruh, Y. C.; Solanki, S. K.; Schüssler, M.; Mathew, S. K.
Affiliation:
AA(Imperial College, London, UK), AB(Imperial College, London, UK), AC(Max-Planck-Institut für Sonnensystemforschung, D-37191 Katlenburg-Lindau, Germany), AD(Max-Planck-Institut für Sonnensystemforschung, D-37191 Katlenburg-Lindau, Germany), AE(Udaipur Solar Observatory (USO), Rajasthan, India)
Publication:
Solar and Stellar Variability: Impact on Earth and Planets, Proceedings of the International Astronomical Union, IAU Symposium, Volume 264, p. 63-65
Publication Date:
02/2010
Origin:
CUP
Keywords:
Sun: general, solar-terrestrial relations, Sun: magnetic fields, Sun: granulation
DOI:
10.1017/S1743921309992377
Bibliographic Code:
2010IAUS..264...63A

Abstract

Long-term trends in the solar spectral irradiance are important to determine the impact on Earth's climate. These long-term changes are thought to be caused mainly by changes in the surface area covered by small-scale magnetic elements. The direct measurement of the contrast to determine the impact of these small-scale magnetic elements is, however, limited to a few wavelengths, and is, even for space instruments, affected by scattered light and instrument defocus. In this work we calculate emergent intensities from 3-D simulations of solar magneto-convection and validate the outcome by comparing with observations from Hinode/SOT. In this manner we aim to construct the contrast at wavelengths ranging from the NUV to the FIR.

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