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The earth's magneti...
The earth's magnetic field enhances solar energy deposition in the upper atmosphere
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- Maggiolo, R. (author)
- Royal Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium
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- Maes, L. (author)
- Max Planck Institute for Solar Systen Research, Göttingen, Germany
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- Cessateur, G. (author)
- Royal Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium
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- Darrouzet, F. (author)
- Royal Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium
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- De Keyser, J. (author)
- Royal Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium; Center for Mathematical Plasma Astrophysics, KULeuven, Heverlee, Belgium
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- Gunell, Herbert (author)
- Umeå universitet,Institutionen för fysik
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(creator_code:org_t)
- John Wiley & Sons, 2022
- 2022
- English.
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In: Journal of Geophysical Research - Space Physics. - : John Wiley & Sons. - 2169-9380 .- 2169-9402. ; 127:12
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The presence of a large-scale planetary magnetic field is thought to be a protective factor for atmospheres, preventing them from being blown off by the solar wind. We focus on one key aspect of atmospheric escape: how does a planetary magnetic fields affect the energy transfer from the Sun to the atmosphere? We estimate the solar wind energy currently dissipated in the Earth's atmosphere using empirical formulas derived from observations. We show that it is significantly higher than the energy dissipated in the atmosphere of a hypothetical unmagnetized Earth. Consequently, we conclude that the Earth's magnetic field enhances the solar energy dissipation in the Earth's atmosphere and that, contrary to the old paradigm, an intrinsic magnetic field does not necessarily reduces atmospheric loss.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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