@article {447, title = {Winter Sporadic-E-Like Propagation on 6 Meters}, volume = {76}, year = {2020}, month = {11/2020}, pages = {28-32}, abstract = {

The question was asked: why do we see sporadic-E like propagation in November and December, when many of the variables like UV radiation and solar exposure are at a minimum, unlike the very active sporadic-E summer months?\  Much like it was shown that North Atlantic transatlantic 6m propagation during the summer was made more possible by strategically placed weather storm systems, it looks like a similar effect with very strong jet stream boundaries also affect sporadic-E\ like communications during the winter months.\  This citizen science study is another example how amateur radio can contribute to science, and illustrates the great potentials for studies using ham radio data.\  We have many amateur radio stations on the air, using modes like FT8 which make contacts on propagation paths that we thought were previously impossible.\ 

}, url = {https://www.cq-amateur-radio.com/}, author = {Joseph A. Dzekevich} } @conference {162, title = {Upper Level Lows and Six Meter 50 Mhz Sporadic E}, booktitle = {Dayton Hamvention}, year = {2017}, address = {Xenia, OH}, abstract = {

Amateur radio is used to explore possible correlations between weather storm systems and sporadic E clouds to see if they are collocated. While some of the main causes of sporadic E propagation are wind shear, meteor strikes and upper atmospheric tides (ultimately coming from solar EUV energy inputs), radio operators have noticed that sporadic E propagation is also changed significantly by hurricanes and storms. \ Specific cases where K1YOW used amateur radio to investigate the effects of low pressure weather storms on the formation and/or enhancement of 6 meter sporadic E clouds are presented. DX Maps and earth wide weather model charts combined with operations on 6 meters are used to examine possible correlations between the location of the sporadic E clouds and the low pressure weather storm systems. \ Initial findings show a high degree of correlation when magnetic field strength is taken into consideration.

}, author = {Joseph A. Dzekevich and Philip J. Erickson} }