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Un modelo de modulación de la luminosidad solar por actividad magnética entre 1954 y 1984
Resumen
Un modelo simple muestra cambios en la irradiación solar debido a la actividad magnética. El sol es más brillante durante el máximo solar, con el pico de 1980 mostrando un brillo más pronunciado que los ciclos anteriores.
Área de la Ciencia:
- Física solar Física solar es la física de la energía solar.
- La irradiación estelar es la radiación estelar.
- El clima espacial es el clima espacial.
Sus antecedentes:
- La irradiación solar total (TSI) exhibe variaciones lentas.
- Estas variaciones están relacionadas con la actividad magnética solar, específicamente las faculas brillantes y las manchas solares oscuras.
- Las mediciones satelitales anteriores (ERB y ACRIM) proporcionan datos de 1981-1984.
Objetivo del estudio:
- Para modelar y reconstruir la modulación de la irradiación solar por la actividad magnética durante múltiples ciclos solares.
- Para comparar la magnitud del brillo de la irradiación durante los ciclos solares recientes.
Principales métodos:
- Desarrolló un modelo simple basado en el exceso de radiación de las faculas magnéticas brillantes y la radiación reducida de las manchas oscuras.
- Validación del modelo en comparación con los datos simultáneos de los radiómetros satelitales ERB y ACRIM (1981-1984).
- Extendió el modelo hasta 1954 para analizar tres ciclos solares de 11 años.
Principales resultados:
- El modelo coincidió con éxito con las lentas variaciones observadas en la irradiación solar total.
- El modelo predice una irradiación solar consistentemente más alta en el máximo de actividad en comparación con el mínimo.
- El pico del ciclo solar en 1980 mostró un 0,07% de brillo, más pronunciado que en los dos ciclos anteriores.
Conclusiones:
- La actividad magnética solar modula significativamente la irradiación solar total.
- A pesar del menor número de manchas solares, el ciclo solar más reciente (con un pico en 1980) exhibió un brillo de irradiación más fuerte.
- La relación entre la amplitud de las manchas solares y la modulación de la irradiación puede no ser lineal en todos los ciclos solares.
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