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Related papers: Reconstruction of the Total Solar Irradiance durin…

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The total solar irradiance (TSI) varies on timescales of minute to centuries. On short timescales it varies due to the superposition of intensity fluctuations produced by turbulent convection and acoustic oscillations. On longer scale…

Solar and Stellar Astrophysics · Physics 2022-10-12 V. Penza , F. Berrilli , L. Bertello , M. Cantoresi , S. Criscuoli , P. Giobbi

Solar irradiance measurements are limited to the last few decades, requiring reconstructions to assess solar variability on longer timescales and its impact on Earth's climate. We present the first physics-based reconstruction of total…

Solar and Stellar Astrophysics · Physics 2026-05-22 D. Temaj , N. A. Krivova , S. K. Solanki , I. G. Usoskin , T. Chatzistergos

The Sun is the primary source of energy for Earth and one of the main external drivers of its climate. Solar irradiance -- the radiative power emitted by the Sun and received at 1-AU -- varies on all observable timescales. It is measured as…

Solar and Stellar Astrophysics · Physics 2026-04-22 D. Temaj , N. A. Krivova , T. Chatzistergos , S. K. Solanki , B. Hofer

The variation of total solar irradiance (TSI) has been measured since 1978 and that of the spectral irradiance for an even shorter amount of time. Semi-empirical models are now available that reproduce over 80% of the measured irradiance…

Solar and Stellar Astrophysics · Physics 2013-03-11 N. A. Krivova , S. K. Solanki , Y. C. Unruh

Context: The study of variations in total solar irradiance (TSI) is important for understanding how the Sun affects the Earth's climate. Aims: Full-disk continuum images and magnetograms are now available for three full solar cycles. We…

Solar and Stellar Astrophysics · Physics 2015-06-04 W. T. Ball , Y. C. Unruh , N. A. Krivova , S. Solanki , T. Wenzler , D. J. Mortlock , A. H. Jaffe

Changes in solar irradiance and in its spectral distribution are among the main natural drivers of the climate on Earth. However, irradiance measurements are only available for less than four decades, while assessment of solar influence on…

Solar and Stellar Astrophysics · Physics 2018-11-09 C. -J. Wu , N. A. Krivova , S. K. Solanki , I. G. Usoskin

Context. There is no consensus on the amplitude of the historical solar forcing. The estimated magnitude of the total solar irradiance difference between Maunder minimum and present time ranges from 0.1 to 6 W/m2 making uncertain the…

Solar and Stellar Astrophysics · Physics 2018-07-18 T. Egorova , W. Schmutz , E. Rozanov , A. I. Shapiro , I. Usoskin , J. Beer , R. V. Tagirov , T. Peter

Solar surface magnetic field seems to be able to explain variations in Total Solar Irradiance on timescales from hours to decades. Using magnetograms from spacecraft (MDI and HMI) and ground-based observatories (MWO and WSO) I build a…

Solar and Stellar Astrophysics · Physics 2018-12-24 Leif Svalgaard

Reliable historical records of total solar irradiance (TSI) are needed for climate change attribution and research to assess the extent to which long-term variations in the Sun's radiant energy incident on the Earth may exacerbate (or…

Solar and Stellar Astrophysics · Physics 2016-04-13 G. Kopp , N. Krivova , J. Lean , C. J. Wu

Aims. We present a physically consistent reconstruction of the total solar irradiance for the Holocene. Methods. We extend the SATIRE models to estimate the evolution of the total (and partly spectral) solar irradiance over the Holocene.…

Solar and Stellar Astrophysics · Physics 2011-05-16 Luis Eduardo A. Vieira , Sami K. Solanki , Natalie A. Krivova , Ilya Usoskin

The variable Sun is the most likely candidate for natural forcing of past climate change on time scales of 50 to 1000 years. Evidence for this understanding is that the terrestrial climate correlates positively with solar activity. During…

Solar and Stellar Astrophysics · Physics 2015-05-27 A. I. Shapiro , W. Schmutz , E. Rozanov , M. Schoell , M. Haberreiter , A. V. Shapiro , S. Nyeki

Accurate information on long-term variations in solar irradiance, important for understanding the solar influence on Earth's climate, cannot be derived from direct irradiance measurements due to the comparatively short lifetimes of…

Solar and Stellar Astrophysics · Physics 2025-04-23 Theodosios Chatzistergos , Natalie A. Krivova , Sami K. Solanki , Kok Leng Yeo

Knowledge of solar irradiance variability is critical to Earth's climate models and understanding the solar influence on Earth's climate. Direct solar irradiance measurements are only available since 1978. Reconstructions of past…

Total solar irradiance (TSI) has been monitored from space since 1978. The measurements show a prominent variability in phase with the solar cycle, as well as fluctuations on timescales shorter than a few days. However, the measurements…

Solar and Stellar Astrophysics · Physics 2020-08-26 Theodosios Chatzistergos , Ilaria Ermolli , Fabrizio Giorgi , Natalie A. Krivova , Cosmin Constantin Puiu

Total and spectral solar irradiance are key parameters in the assessment of solar influence on changes in the Earth's climate. We present a reconstruction of daily solar irradiance obtained using the SATIRE-S model spanning 1974 to 2013…

Solar and Stellar Astrophysics · Physics 2015-07-07 K. L. Yeo , N. A. Krivova , S. K. Solanki , K. H. Glassmeier

Since the late 1970s, successive satellite missions have been monitoring the sun's activity and recording the total solar irradiance (TSI). Some of these measurements have lasted for more than a decade. In order to obtain a seamless record…

The Earth's primary source of energy is the radiant energy generated by the Sun, which is referred to as solar irradiance, or total solar irradiance (TSI) when all of the radiation is measured. A minor change in the solar irradiance can…

Solar and Stellar Astrophysics · Physics 2021-07-26 Yasser Abduallah , Jason T. L. Wang , Yucong Shen , Khalid A. Alobaid , Serena Criscuoli , Haimin Wang

Reconstructions of total solar irradiance (TSI) rely mainly on linear relations between TSI variation and indices of facular area. When these are extrapolated to the prolonged 15th - 17th century Sp\"orer and Maunder solar activity minima,…

Solar and Stellar Astrophysics · Physics 2011-08-15 Peter Foukal , Ada Ortiz , Roald Schnerr

Total solar irradiance variations, about 0.1% between solar activity maximum and minimum, are available from accurate satellite measurements since 1978 and thus do not provide useful information on longer-term secular trends. Recently,…

Solar and Stellar Astrophysics · Physics 2012-05-23 S. Sello

The Sun's net radiative output varies on timescales of minutes to gigayears. Direct measurements of the total solar irradiance (TSI) show changes in the spatially- and spectrally-integrated radiant energy on timescales as short as minutes…

Solar and Stellar Astrophysics · Physics 2016-07-04 Greg Kopp
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