The Faint Young Sun Paradox : A Simplified Thermodynamic Approach
Joint Authors
Rosales, Marco A.
Angulo-Brown, F.
Barranco-Jiménez, M. A.
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-07-24
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Classical models of the Sun suggest that the energy output in the early stage of its evolution was 30 percent less than today.
In this context, radiative balance alone between The Sun and the Earth was not sufficient to explain the early presence of liquid water on Earth’s surface.
This difficulty is called the faint young Sun paradox.
Many proposals have been published to solve this paradox.
In the present work, we propose an oversimplified finite-time thermodynamic approach that describes the air convective cells in the Earth atmosphere.
This model introduces two atmospheric modes of thermodynamic performance: a first mode consisting in the maximization of the power output of the convective cells (maximum power regime) and a second mode that consists in maximizing a functional representing a good trade-off between power output and entropy production (the ecological regime).
Within the assumptions of this oversimplified model, we present different scenarios of albedo and greenhouse effects that seem realistic to preserve liquid water on the Earth in the early stage of formation.
American Psychological Association (APA)
Angulo-Brown, F.& Rosales, Marco A.& Barranco-Jiménez, M. A.. 2012. The Faint Young Sun Paradox : A Simplified Thermodynamic Approach. Advances in Astronomy،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-474762
Modern Language Association (MLA)
Angulo-Brown, F.…[et al.]. The Faint Young Sun Paradox : A Simplified Thermodynamic Approach. Advances in Astronomy No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-474762
American Medical Association (AMA)
Angulo-Brown, F.& Rosales, Marco A.& Barranco-Jiménez, M. A.. The Faint Young Sun Paradox : A Simplified Thermodynamic Approach. Advances in Astronomy. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-474762
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-474762