TY - BOOK ID - 5449280 TI - Dayside and polar cap aurora AU - Sandholt, P. E. AU - Carlson, Herbert C. AU - Egeland, Alv PY - 2004 SN - 0306479699 1402004478 9781402004476 PB - New York : Kluwer Academic Publishers, DB - UniCat KW - Physics. KW - Atmospheric sciences. KW - Astrophysics. KW - Atoms. KW - Astrophysics and Astroparticles. KW - Atmospheric Sciences. KW - Atomic, Molecular, Optical and Plasma Physics. KW - Auroras. KW - Aurora australis KW - Aurora borealis KW - Northern lights KW - Polar lights KW - Atmospheric physics KW - Auroras KW - Natural philosophy KW - Philosophy, Natural KW - Physical sciences KW - Dynamics KW - Chemistry, Physical and theoretical KW - Matter KW - Stereochemistry KW - Atmospheric sciences KW - Earth sciences KW - Atmosphere KW - Astronomical physics KW - Astronomy KW - Cosmic physics KW - Physics KW - Constitution UR - https://www.unicat.be/uniCat?func=search&query=sysid:5449280 AB - The auroral emissions in the upper atmosphere of the polar regions of the Earth are evidence of the capture of energetic particles from the Sun, streaming by the Earth as the solar wind. These auroral emissions, then, are a window to outer space, and can provide us with valuable information about electrodynamic coupling processes between the solar wind and the Earth's ionosphere and upper atmosphere. Studying the physics of these phenomena extends our understanding of our plasma universe. Ground-based remote-sensing techniques, able to monitor continuously the variations in the signatures of aurorae, in combination with in-situ satellite and rocket measurements, promise to advance dramatically our understanding of the physical processes taking place at the interface of the atmospheres of the Earth and the Sun. Decoding their complexity brings us closer to reliable prediction of communication environments, especially at high latitudes. This understanding, in turn, will help us resolve problems of communication and navigation across polar regions. ER -