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Woods TN, Snow M, Harder J, et al. A Different View of Solar Spectral Irradiance Variations: Modeling Total Energy over Six-Month Intervals. Sol Phys. 2015;290:2649-2676doi: 10.1007/s11207-015-0766-0.
Woods, T. N., Snow, M., Harder, J., Chapman, G., & Cookson, A. (2015). A Different View of Solar Spectral Irradiance Variations: Modeling Total Energy over Six-Month Intervals. Solar physics, 2902649-2676. https://doi.org/10.1007/s11207-015-0766-0
Woods, Thomas N, et al. "A Different View of Solar Spectral Irradiance Variations: Modeling Total Energy over Six-Month Intervals." Solar physics vol. 290 (2015): 2649-2676. doi: https://doi.org/10.1007/s11207-015-0766-0
Woods TN, Snow M, Harder J, Chapman G, Cookson A. A Different View of Solar Spectral Irradiance Variations: Modeling Total Energy over Six-Month Intervals. Sol Phys. 2015;290:2649-2676. doi: 10.1007/s11207-015-0766-0. Epub 2015 Sep 09. PMID: 27445419; PMCID: PMC4938014.
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Sol Phys. 2015;290:2649-2676. doi: 10.1007/s11207-015-0766-0. Epub 2015 Sep 09.

A Different View of Solar Spectral Irradiance Variations: Modeling Total Energy over Six-Month Intervals.

Solar physics

Thomas N Woods, Martin Snow, Jerald Harder, Gary Chapman, Angela Cookson

Affiliations

  1. Laboratory for Atmospheric and Space Physics (LASP), University of Colorado, 3665 Discovery Dr., Boulder, CO 80303 USA.
  2. San Fernando Observatory (SFO), California State University Northridge, 14031 San Fernando Rd., Sylmar, CA 91342 USA.

PMID: 27445419 PMCID: PMC4938014 DOI: 10.1007/s11207-015-0766-0

Abstract

A different approach to studying solar spectral irradiance (SSI) variations, without the need for long-term (multi-year) instrument degradation corrections, is examining the total energy of the irradiance variation during 6-month periods. This duration is selected because a solar active region typically appears suddenly and then takes 5 to 7 months to decay and disperse back into the quiet-Sun network. The solar outburst energy, which is defined as the irradiance integrated over the 6-month period and thus includes the energy from all phases of active region evolution, could be considered the primary cause for the irradiance variations. Because solar cycle variation is the consequence of multiple active region outbursts, understanding the energy spectral variation may provide a reasonable estimate of the variations for the 11-year solar activity cycle. The moderate-term (6-month) variations from the

Keywords: Irradiance modeling; Solar cycle variations; Solar spectral irradiance

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