Mesospheric and lower thermospheric chemistry effects on the thermosphere and ionosphere semiannual oscillations
McArthur Jones Jr, US Naval Research Laboratory, Space Science Divsion, Washington, DC, United States, John T Emmert, Naval Research Lab, Washington, United States, David E Siskind, Naval Research Lab, Washington, DC, United States, Douglas Patrick Drob, Naval Research Lab, Space Science Division, Washington, United States and Eric K Sutton, University of Colorado at Boulder, Space Weather Technology, Research, and Education Center, Boulder, United States