https://impacts.ucar.edu/en/publications/intra-annual-variability-of-the-low-latitude-ionosphere-due-to-no/
Intra-annual variability of the low-latitude ionosphere due to nonmigrating tides - Impacts @ NSF...
https://experts.illinois.edu/en/publications/a-climatology-of-nonmigrating-semidiurnal-tides-from-timed-dopple/
A climatology of nonmigrating semidiurnal tides from TIMED Doppler Interferometer (TIDI) wind data...