Spectral Entropy in Atmospheres
A special issue of Entropy (ISSN 1099-4300).
Deadline for manuscript submissions: closed (31 May 2018)
Special Issue Editor
Interests: Mars research; climate modelling; entropy and thermodynamics; planetary science; astrobiology; radiative transfer; terrestrial radiation balance; remote sensing; retrieval methods; development of ground-, balloon, and space instruments
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleague,
After the work of Boltzmann on the thermodynamics of radiation and the development of its famous distribution, Planck introduced the concept of radiation quanta in 1900. Using this new concept, he presented the expression of the spectral entropy associated with each vibrational frequency mode, and formulated the famous law of blackbody radiation. Later, Beretta and Gyftopoulos remarked on the fact that electromagnetic radiation carries both energy and entropy, and that for blackbody radiative transfer between two systems at different temperatures, the rate of entropy transfer is not equal to the ratio of energy transfer rate between the two systems to the temperature of either of the systems. Since the works by Petela in the 1960s, the importance of entropy and exergy of radiation to energy conversion has been considered in many works, and, for example, extensive studies have been published to determine the maximum efficiency of solar energy converters.
In the particular cases of the solar or stellar radiation reaching a planet around them, it interacts with the atmospheric components (gas species, clouds, dust, aerosols, etc.) and the surface of the planet, and the radiation undergoes processes of absorption, scattering and emission. These processes have an impact on the spectral entropy distribution of the radiation reaching the surface and leaving the atmosphere of the planet, and its study can provide information about the composition and physical processes of a planet. Similarly, the spectral distribution of the entropy during the transfer between the layers of the solar and stellar radiation also will provide information about the solar (and other stars’) phenomena in their internal layers.
In this Special Issue, attention is paid to contributions dealing with spectral entropy associated with the emission, transmission, and scattering processes of radiation in the atmospheres of planets, the Sun, and other stars.
Prof. Dr. Javier Martin-TorresGuest Editor
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Keywords
- spectral entropy
- planetary atmospheres
- stellar atmosphere
- exergy
- Planck function
- reversible processes
- irreversible processes
- radiative transfer
- spectral energy
- scattering, emission, absorption, blackbody
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