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A comparison of measured and simulated solar network contrast

Published online by Cambridge University Press:  26 February 2010

N. Afram ,
Y. C. Unruh ,
S. K. Solanki ,
M. Schüssler  and
S. K. Mathew
N. Afram
Affiliation:
Imperial College, London, UK
Y. C. Unruh
Affiliation:
Imperial College, London, UK
S. K. Solanki
Affiliation:
Max-Planck-Institut für Sonnensystemforschung, D-37191 Katlenburg-Lindau, Germany
M. Schüssler
Affiliation:
Max-Planck-Institut für Sonnensystemforschung, D-37191 Katlenburg-Lindau, Germany
S. K. Mathew
Affiliation:
Udaipur Solar Observatory (USO), Rajasthan, India
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Abstract

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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.

Keywords

Sun: generalsolar-terrestrial relationsSun: magnetic fieldsSun: granulation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S264: Solar and Stellar Variability: Impact on Earth and Planets , August 2009 , pp. 63 - 65
Copyright
Copyright © International Astronomical Union 2010

References

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