Effective Sunspot Number (SSNi) Comparison Study
AIR FORCE ENVIRONMENTAL TECHNICAL APPLICATIONS CENTER SCOTT AFB IL
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Report documents the results of a USAFETAC study done to determine whether or not reliable global Effective Sunspot Numbers SSNis for the Air Force Global Weather Centrals AFGWCs Ionospheric Conductivity and Electron density ICED model could be calculated based on the present number 11 of digital ionosonde sites. The study found that increasing the number of sites would have a limited effect on ICED output, and that it was feasible to run the ICED model using the present 11-station network, subject to certain limitations.