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Modelling short-term Solar Spectral Irradiance (SSI) using coronal electron density and temperature profiles based on solar magnetic field observations

Published online by Cambridge University Press:  12 September 2017

J. M. Rodríguez Gómez ,
L. E. Antunes Vieira ,
A. Dal Lago ,
J. Palacios ,
L. A. Balmaceda  and
T. Stekel
J. M. Rodríguez Gómez
Affiliation:
National Institute for Space Research (INPE), Avenida dos Astronautas-12227-010, São José dos Campos-SP, Brazil email: jenny.gomez@inpe.br
L. E. Antunes Vieira
Affiliation:
National Institute for Space Research (INPE), Avenida dos Astronautas-12227-010, São José dos Campos-SP, Brazil email: jenny.gomez@inpe.br
A. Dal Lago
Affiliation:
National Institute for Space Research (INPE), Avenida dos Astronautas-12227-010, São José dos Campos-SP, Brazil email: jenny.gomez@inpe.br
J. Palacios
Affiliation:
Universidad de Alcalá. Pza. San Diego, s/n 28801 - Alcalá de Henares (Madrid) España.
L. A. Balmaceda
Affiliation:
Instituto de Ciencias Astronómicas de la Tierra y el Espacio, ICATE-CONICET, Avda. de España Sur 1512, J5402DSP, San Juan, Argentina.
T. Stekel
Affiliation:
National Institute for Space Research (INPE), Avenida dos Astronautas-12227-010, São José dos Campos-SP, Brazil email: jenny.gomez@inpe.br
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Abstract

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Some key physical processes that impact the evolution of Earth's atmosphere on time-scale from days to millennia, such as the EUV emissions, are determined by the solar magnetic field. However, observations of the solar spectral irradiance are restricted to the last few solar cycles and are subject to large uncertainties. We present a physics-based model to reconstruct short-term solar spectral irradiance (SSI) variability. The coronal magnetic field is estimated to employ the Potential Field Source Surface extrapolation (PFSS) based on observational synoptic charts and magnetic flux transport model. The emission is estimated to employ the CHIANTI atomic database 8.0. The performance of the model is compared to the emission observed by TIMED/SORCE.

Keywords

Sun: magnetic fieldsphotospherecorona
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S327: Fine Structure and Dynamics of the Solar Atmosphere , October 2016 , pp. 82 - 85
Copyright
Copyright © International Astronomical Union 2017 

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