Relevance of the topologies of solar ejected plasmas in tropospheric processes

Details Relevance of the topologies of solar ejected plasmas in tropospheric processes Relevance of the topologies of solar ejected plasmas in tropospheric processes

Mar 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.477..423b&link_type=abstract

In: Proceedings of the Second Solar Cycle and Space Weather Euroconference, 24 - 29 September 2001, Vico Equense, Italy. Editor:

Computer Science

Earth Troposphere, Solar Plasmas, Solar-Terrestrial Relations

Scientific paper

The lower atmosphere has a quite complex pattern of responses to the ejected solar plasmas depending on the magnetic topologies of their solar sources. The present contribution overviews the relevant properties of the upstream plasmas which can intermediate between the solar features and the atmosphere. The analysis of the magnetic field involved the strength and sense of its components as well as the duration of a certain sense of the components. Any equinoctial enhancements similar to that of the atmospheric response were also searched. The comparison of the properly selected atmospheric and solar wind features results in a few candidates for the role of mediation between the solar and terrestrial atmospheres. Besides the generally accepted role of the IMF Bz and bulk velocity, the IMF By component is proven to be of crucial importance. Under certain conditions it exhibits a semiannual behavior, a dependence on dipole cycle and a direct impact onto the terrestrial atmospheric current system, thus it is apparently a key factor in solar-terrestrial relations.

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