scostep 2010 (stp12) - Leibniz-Institut für Atmosphärenphysik an der ...

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STP12 Abstracts Berlin, 12 - 16 July 2010 SCOSTEP Symposium 2010 The Solar Mass Ejection Imager (SMEI) Web Database and 3-D Analysis at UCSD Jackson B.V. , Clover J.M. , Hick P.P. , Buffington A. UCSD/CASS The Solar Mass Ejection Imager (SMEI) has been operating nearly continuously since “first light” on the Coriolis spacecraft in early February, 2003. We present the current state of the SMEI database maintained and stored on UCSD/CASS Web servers. The up-to-date UCSD database includes individual SMEI CCD data frames from each of the three SMEI cameras since launch as well as single-orbit full-sky maps in a sidereal reference frame that preserve the original resolution and photometric precision. Further processing of the SMEI data for the whole data set has allowed the removal of zodiacal cloud brightness, auroral signals, bright stars, and the sidereal background. A Web interface to this latter data set describes the database and allows display of these maps in sun-centered ecliptic coordinates, either directly or as running differences. “Quick-look” skymaps are now displayed as real-time difference images on the UCSD website within a few hours of their arrival from the instrument. Further processing provides these data free from planetary-, moon-, and auroral-light contamination so that they can be used in tomographic 3-D analyses. These 3-D analyses are presented on the Web as up to date as possible (usually within a month of their being available). Current plans are to provide these higher-level products additionally in “forecast” mode, allowing real-time updates of in-situ density measurement forecasts at Earth up to a few days ahead of the present. Presented by: Jackson, B.V.
STP12 Abstracts Berlin, 12 - 16 July 2010 SCOSTEP Symposium 2010 An index to describe global ionospheric variability using satellite-borne solar EUV measurements Unglaub Claudia 1 , Jacobi Christoph 1 , Schmidtke Gerhard 2 , Nikutowski Bernd 2 , Brunner Raimund 2 1 University of Leipzig, Institute for Meteorology, 2 Fraunhofer IPM, Freiburg Primary ionisation of major ionospheric constituents is calculated from SolACES and TIMED-SEE solar EUV measurements in the wavelength range 16-135 nm, and number densities of the background atmosphere taken from the NRLMSIS-E climatology. From the calculated ionisation rates, a global EUV-TEC index is derived, which describes the ionospheric response on solar EUV and its variability from the last solar maximum to date. The index is compared against global mean ionisation values taken from TEC maps. The index describes global TEC variability better than other indices like F10.7 do. The EUV-TEC index may be used for scientific research, and to describe the ionospheric effects on radio communication and navigation systems.
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scostep 2010 (stp12) - Leibniz-Institut für Atmosphärenphysik an der ...

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