A comparison of measured and simulated solar network contrast
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.
- Publication:
-
Solar and Stellar Variability: Impact on Earth and Planets
- Pub Date:
- February 2010
- DOI:
- 10.1017/S1743921309992377
- arXiv:
- arXiv:0910.0976
- Bibcode:
- 2010IAUS..264...63A
- Keywords:
-
- Sun: general;
- solar-terrestrial relations;
- Sun: magnetic fields;
- Sun: granulation;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- Proceedings paper, IAU XXVII, Symposium 264, 3 pages