A comparison of measured and simulated solar network contrast

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 im...

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Bibliographic Details
Published in:arXiv.org 2009-10
Main Authors: Afram, N, Unruh, Y C, Solanki, S K, Schuessler, M, Mathew, S K
Format: Article
Language:English
Subjects:
Convection
Irradiance
Luminous intensity
Wavelengths
Online Access:Get full text
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.0910.0976