Upper‐mesosphere combined optical measurements of wind and temperature fields at Amundsen‐Scott Station (South Pole) and wind radar measurements at Scott Base (78°S, 167°E) show the presence of large‐scale waves in this region of the atmosphere. At Amundsen‐Scott the largest amplitude wave observed with sub‐diurnal periodicity appears with a frequency near 2.4/day (∼10.1 hour period), with a westward phase progression of wavenumber one. The presence of a wave with this periodicity is confirmed by the observations at Scott Base. The combination of the experimentally‐found period, phase progression, associated small‐temperature oscillations, and theoretical considerations lead to the interpretation of this wave as a Lamb wave. The present combination of spatially‐resolved optical measurements and radar measurements illustrates the value of multiple‐station and multiple‐technique observations in elucidating the upper‐mesosphere dynamical state, as well as the properties of the waves propagating through the medium where the ob
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