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STP12 Abstracts Berlin, 12 - 16 July 2010 SCOSTEP Symposium 2010 Energetic Particle Precipitation in the Upper Atmosphere: Sources and Consequences Lu Gang National Center for Atmospheric Research Energetic particles, namely electron and ions, released from the Sun and from the Earth's magnetosphere are important sources of ionization of neutral gases in the upper atmosphere. Owing to their different characteristic energies and energy fluxes, there are distinctive differences in geoeffectiveness among solar energetic protons (SEPs), ring current energetic particles, and auroral particles in terms of their energy deposition in the ionosphere and atmosphere. While precipitating electrons with an average energy 1 MeV can penetrate deep into the atmosphere, causing ionization at altitudes below 100 km. SEPs can also significantly alter the neutral composition in regions between the lower thermosphere and upper stratosphere. This paper will demonstrate the effects associated with the energetic particles from the various sources based on numerical simulations from the NCAR TIMEGCM, with an emphasis on the inter-comparison amongst the different source populations.
STP12 Abstracts Berlin, 12 - 16 July 2010 SCOSTEP Symposium 2010 Sunspot databases of Debrecen Baranyi Tünde , Győri Lajos , Ludmány András Heliophysical Observatory of the Hungarian Academy of Sciences The Heliophysical Observatory is the source of the most detailed sunspot data. The DPD (Debrecen Photoheliographic Data) is made by using ground-based observations, it is the continuation of the Greenwich Photoheliographic Results. The SDD (SOHO/Debrecen sunspot Data) is based on space-borne observations, its resolution is lower in space and higher in time than those of DPD. The digitized historical material will later serve as a basis of a long-term catalogue. We give an introduction of these materials and some comparisons with other sunspot datasets concerning data types, precision, biases (with emphasis on area data) and solutions of presentation. Secondary datasets are also derived (e.g. sunspot group tilts, recurrent active regions) or planned (classification of active region types).
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scostep 2010 (stp12) - Leibniz-Institut für Atmosphärenphysik an der ...

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