Physics
Scientific paper
Sep 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003esasp.535..371p&link_type=abstract
In: Solar variability as an input to the Earth's environment. International Solar Cycle Studies (ISCS) Symposium, 23 - 28 June 2
Physics
2
Solar Wind, Auroral Electrojets, Earth Atmosphere: Gravity Waves
Scientific paper
The bulk of highly variable solar wind energy is channeled to the auroral ovals and deposited in the upper atmosphere, much of it in the form of Joule heating. On time scales from tens of minutes to a few hours the auroral electrojets generate atmospheric gravity waves that interact with neutral winds and deposit their momentum in the neutral atmosphere. It is suggested that downward transmitted gravity waves, when amplified by wind shears or seeding instabilities that generate gravity waves in the mid-latitude troposphere, contribute to cloud formation. The results of a superposed epoch analysis of high-level cloud cover point to a link between the solar wind, the auroral ionosphere and tropospheric weather.
Muldrew D. B.
Prikryl Paul
Sofko George J.
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