Consequences of Bottomside Ionospheric Variability on HF radio wave propagation

Kate Zawdie1, Manbharat Singh Dhadly2, Sarah E McDonald1, Fabrizio Sassi3, Clayton Coker1 and Douglas Patrick Drob4, (1)US Naval Research Laboratory, Washington, DC, United States, (2)US Naval Research Laboratory, Space Science Division (Code 7632), Washington, DC, United States, (3)Naval Research Lab DC, Washington, DC, United States, (4)Naval Research Lab, Space Science Division, Washington, DC, United States