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arXiv · 0910.0976

A comparison of measured and simulated solar network contrast

N. Afram·Y. C. Unruh·S. K. Solanki·M. Schuessler·S. K. Mathew
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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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N. Afram, Y. C. Unruh, S. K. Solanki, M. Schuessler, S. K. Mathew. 2009-10-06. A comparison of measured and simulated solar network contrast. https://doi.org/10.1017/s1743921309992377

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