Auroral Boundary Index from 1983 to 1990
Environmental research papers
AIR FORCE SYSTEMS COMMAND HANSCOM AFB MA GEOPHYSICS LAB
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Since the release of the auroral boundary index for the Defense Meteorological Satellite Program DMSPF2 satellite, equivalent midnight auroral equatorward boundaries have been routinely processed for the DMSPF6, F7,F8 and F9 satellites at the AFGL. The auroral equatorward boundary selection algorithm was modified from that for the SSJ3 particle detector on theF2 satellite to work for the next generation SSJ4 instrument that flies on the later satellites. The final product presented here is comprised of a series of solar rotation plots, stacked five per page for the period 1 January 1983 to 15 May 1990. The equivalent midnight boundaries that are plotted are a subset of the complete data base. Only those boundaries occurring in the evening sector are used since there is little ambiguity in their selection. In addition, we apply other criteria that are somewhat satellite dependent. The original set of criteria used on the boundaries from the F6 and F7 satellites were modified when boundaries from F8 and F9 satellites became available. Since all plots of boundaries that made their way to the public before 1988 used the original criteria, both original and modified criteria are explained.
- Atmospheric Physics