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Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics
Published on: October 27, 2017
Observaciones de la variabilidad de la irradiación solar
Resumen
Las mediciones de la irradiación solar total revelan variabilidad, con disminuciones relacionadas con el desarrollo de manchas solares. Esto sugiere un importante almacenamiento de energía dentro de las regiones solares activas.
Área de la Ciencia:
- Física solar Física solar es la física de la energía solar.
- La astronomía es la astronomía.
- Ciencias espaciales Ciencias espaciales Ciencias.
Sus antecedentes:
- La irradiación solar total (TSI) es un parámetro fundamental para el clima de la Tierra.
- La variabilidad en la ETI puede afectar el clima y el clima espacial.
- Las mediciones anteriores tenían limitaciones en la precisión y la resolución temporal.
Objetivo del estudio:
- Para presentar mediciones de alta precisión de la ETI de la Misión Máxima Solar (SMM).
- Para analizar la variabilidad de la ETI durante los primeros 153 días de observación.
- Para investigar la relación entre las fluctuaciones de la ETI y la actividad solar.
Principales métodos:
- Utilizó el Monitor de Irradiación de Radiómetro de Cavidad Activa (ACRIM) en el satélite SMM.
- Datos recogidos de alta precisión de la ETI con incertidumbres tan pequeñas como el 0,001%.
- Se analizaron las variaciones de órbita a órbita y las características espectrales de las fluctuaciones de la irradiación.
Principales resultados:
- Se observó una variabilidad significativa en la ETI durante 153 días, con amplitudes alrededor de +/- 0,05% de la media (1368.31 W/m2).
- Identificaron fluctuaciones de irradiación consistentes con el ruido limitado por la banda, con un corte de alta frecuencia cerca de 0.15 días-1.1.
- Se encontraron dos importantes disminuciones de la irradiación (hasta 0.2%, con una duración de ~1 semana) fuertemente correlacionadas con el desarrollo del grupo de manchas solares.
Conclusiones:
- La ETI exhibe una notable variabilidad en escalas de tiempo cortas.
- Las regiones activas solares, en particular las manchas solares, juegan un papel importante en las fluctuaciones de la ETI.
- La variabilidad observada sugiere un almacenamiento sustancial de energía dentro de la zona de convección solar en regiones activas.
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