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Solar constant

About: Solar constant is a research topic. Over the lifetime, 967 publications have been published within this topic receiving 29647 citations.


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Journal ArticleDOI
TL;DR: A detailed analysis of ground-based measurements of cloud-enhanced solar global irradiation in NE Brazil in the cities of Agua Branca, Santana do Ipanema, Palmeira dos Indios, Laje, Pao de Acucar, Arapiraca, Coruripe, and Maceio from January to December 2008 is presented in this article.

29 citations

Journal ArticleDOI
TL;DR: In this article, the contribution of the magnetic field at the solar surface to total solar irradiance variations was estimated, and it was shown that magnetic features at the surface account for over 90% of the irradiance variation on a solar rotation time scale and at least 70% on a cyclic time scale.

29 citations

Journal ArticleDOI
TL;DR: In this article, the impact of solar constant variation on the predictability of the Arctic Oscillation (AO) is investigated in terms of 1-month lead hindcast data obtained from a coupled general circulation model.
Abstract: The impact of solar constant variation on the predictability of the Arctic Oscillation (AO) is investigated in terms of 1 month lead hindcast data obtained from a coupled general circulation model. The 1 month lead hindcasts produced from a realistic initial solar constant experiment (Solar Run, SR) and from a climatological solar constant experiment (Control run, CR) are comparatively analysed. The 1 month lead hindcasts were initiated from mid-November, mid-December and mid-January of each year for the period 1980–2009. The hindcast of the SR showed better skill than that of the CR in terms of forecasting not only the AO index but also the atmospheric circulation pattern related with the AO. This shows that the prescription of realistic solar constant as the initial condition is necessary for improved AO prediction. Copyright © 2013 Royal Meteorological Society

28 citations

Journal ArticleDOI
TL;DR: In this paper, the authors carried out precise measurements of variations in solar diameter during the rising phase of solar cycle 24.5 days, with a typical periodicity of 129.5 ± 6.5 mas variation.
Abstract: The potential relationship between solar activity and changes in solar diameter remains the subject of debate and requires both models and measurements with sufficient precision over long periods of time. Using the PICARD instruments, we carried out precise measurements of variations in solar diameter during the rising phase of solar cycle 24. From new correction methods we found changes in PICARD space telescope solar radius amplitudes that were less than ±20 mas (i.e. ±14.5 km) for the years 2010–2011. Moreover, PICARD ground-based telescope solar radius amplitudes are smaller than ±50 mas from 2011 to 2014. Our observations could not find any direct link between solar activity and significant fluctuations in solar radius, considering that the variations, if they exist, are included within this range of values. Further, the contribution of solar radius fluctuations is low with regard to variations in total solar irradiance. Indeed, we find a small variation of the solar radius from space measurements with a typical periodicity of 129.5 days, with ±6.5 mas variation.

28 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20238
202215
20219
20202
201911
201810