The Faint Young Sun Paradox : A Simplified Thermodynamic Approach

المؤلفون المشاركون

Rosales, Marco A.
Angulo-Brown, F.
Barranco-Jiménez, M. A.

المصدر

Advances in Astronomy

العدد

المجلد 2012، العدد 2012 (31 ديسمبر/كانون الأول 2012)، ص ص. 1-10، 10ص.

الناشر

Hindawi Publishing Corporation

تاريخ النشر

2012-07-24

دولة النشر

مصر

عدد الصفحات

10

التخصصات الرئيسية

الفلك

الملخص 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.

نمط استشهاد جمعية علماء النفس الأمريكية (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

نمط استشهاد الجمعية الأمريكية للغات الحديثة (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

نمط استشهاد الجمعية الطبية الأمريكية (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

نوع البيانات

مقالات

لغة النص

الإنجليزية

الملاحظات

Includes bibliographical references

رقم السجل

BIM-474762