Physics
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsa23a0381e&link_type=abstract
American Geophysical Union, Fall Meeting 2004, abstract #SA23A-0381
Physics
2162 Solar Cycle Variations (7536), 2455 Particle Precipitation, 0310 Airglow And Aurora, 0358 Thermosphere: Energy Deposition
Scientific paper
Two and a half solar cycles of low energy auroral electron and total hemispheric power indices from 21 NOAA and DMSP satellites were intercalibrated for each hemisphere after addressing contamination and degradation issues. The adjustments ranged within a factor of two. The SEM-2 NOAA satellites were also intercalibrated to provide estimates of the low energy (< 20 keV) auroral ion hemispheric power over half a solar cycle. The winter hemispheric electron power exceeded the summer by 5% to 25% between solar minimum and maximum, while the low energy ion hemispheric power was larger in the summer hemisphere. Hourly and daily median and average composite indices were created. The adjusted and composite indices were compared with various geophysical indices. Spectral power analyses were made to find the long and short time periodicities of the parameters. The best cross-correlations were found to be with the Kp geomagnetic index for the electron hemispheric power and with the Ap geomagnetic index for the ion hemispheric power.
Emery Barbara A.
Evans Silvan D.
Rich Frederic J.
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