Evolution of the solar irradiance during the Holocene
Luis Eduardo Antunes Vieira,Luis Eduardo Antunes Vieira,Sami K. Solanki,Sami K. Solanki,Natalie A. Krivova,Ilya Usoskin +5 more
TLDR
In this paper, the authors presented a physically consistent reconstruction of the total solar irradiance for the Holocene, based on the SATIRE (Spectral And Total Irradiance REconstruction) models.Abstract:
Context. Long-term records of solar radiative output are vital for understanding solar variability and past climate change. Measurements of solar irradiance are available for only the last three decades, which calls for reconstructions of this quantity over longer time scales using suitable models. Aims. We present a physically consistent reconstruction of the total solar irradiance for the Holocene. Methods. We extend the SATIRE (Spectral And Total Irradiance REconstruction) models to estimate the evolution of the total (and partly spectral) solar irradiance over the Holocene. The basic assumption is that the variations of the solar irradiance are due to the evolution of the dark and bright magnetic features on the solar surface. The evolution of the decadally averaged magnetic flux is computed from decadal values of cosmogenic isotope concentrations recorded in natural archives employing a series of physics-based models connecting the processes from the modulation of the cosmic ray flux in the heliosphere to their record in natural archives. We then compute the total solar irradiance (TSI) as a linear combination of the jth and jth + 1 decadal values of the open magnetic flux. In order to evaluate the uncertainties due to the evolution of the Earth’s magnetic dipole moment, we employ four reconstructions of the open flux which are based on conceptually different paleomagnetic models. Results. Reconstructions of the TSI over the Holocene, each valid for a different paleomagnetic time series, are presented. Our analysis suggests that major sources of uncertainty in the TSI in this model are the heritage of the uncertainty of the TSI since 1610 reconstructed from sunspot data and the uncertainty of the evolution of the Earth’s magnetic dipole moment. The analysis of the distribution functions of the reconstructed irradiance for the last 3000 years, which is the period that the reconstructions overlap, indicates that the estimates based on the virtual axial dipole moment are significantly lower at earlier times than the reconstructions based on the virtual dipole moment. We also present a combined reconstruction, which represents our best estimate of total solar irradiance for any given time during the Holocene. Conclusions. We present the first physics-based reconstruction of the total solar irradiance over the Holocene, which will be of interest for studies of climate change over the last 11 500 years. The reconstruction indicates that the decadally averaged total solar irradiance ranges over approximately 1.5 W/m 2 from grand maxima to grand minima.read more
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Climate Change 2007: The Physical Science Basis.
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TL;DR: In this article, the authors present a document, redatto, voted and pubblicato by the Ipcc -Comitato intergovernativo sui cambiamenti climatici - illustra la sintesi delle ricerche svolte su questo tema rilevante.
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Continental-scale temperature variability during the past two millennia
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F. Steinhilber,J. A. Abreu,Jürg Beer,Irene Brunner,Marcus Christl,Hubertus Fischer,U. Heikkilä,Peter W. Kubik,Mathias Mann,Ken McCracken,Heinrich Miller,Hiroko Miyahara,Hans Oerter,Frank Wilhelms +13 more
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The Exoplanet Handbook
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References
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Climate Change 2007: The Physical Science Basis Summary for Policymakers:
Journal ArticleDOI
INTCAL98 Radiocarbon Age Calibration, 24,000-0 cal BP
Minze Stuiver,Paula J. Reimer,Edouard Bard,J.W Beck,George S. Burr,Konrad A Hughen,Bernd Kromer,Gerry McCormac,Johannes van der Plicht,Marco Spurk +9 more
TL;DR: In this paper, the conversion of radiocarbon ages to calibrated (cal) ages for the interval 24,000-0 cal BP (Before Present, 0 cal BP = AD 1950) is discussed.
Journal Article
Climate Change 2007: The Physical Science Basis.
Stefano Schiavon,Roberto Zecchin +1 more
TL;DR: In this article, the authors present a document, redatto, voted and pubblicato by the Ipcc -Comitato intergovernativo sui cambiamenti climatici - illustra la sintesi delle ricerche svolte su questo tema rilevante.
Journal ArticleDOI
IntCal04 terrestrial radiocarbon age calibration, 0-26 cal kyr BP
Paula J. Reimer,Michael Baillie,Edouard Bard,Alex Bayliss,J. Warren Beck,Chanda J H Bertrand,Paul G. Blackwell,Caitlin E. Buck,George S. Burr,K. B. Cutler,Paul E. Damon,R. Lawrence Edwards,Richard G. Fairbanks,Michael Friedrich,Thomas P. Guilderson,Alan G. Hogg,Konrad A Hughen,Bernd Kromer,Gerry McCormac,Sturt W. Manning,Christopher Bronk Ramsey,Ron W Reimer,Sabine Remmele,John Southon,Minze Stuiver,Sahra Talamo,Frederick W. Taylor,Johannes van der Plicht,Constanze E. Weyhenmeyer +28 more
TL;DR: In this paper, a new calibration curve for the conversion of radiocarbon ages to calibrated (cal) ages has been constructed and internationally ratified to replace IntCal98, which extended from 0-24 cal kyr BP (Before Present, 0 cal BP = AD 1950).