A scientific preprint titled 'Interannual variability of mean winds and the semidiurnal tide in the Antarctic summer mesosphere-lower thermosphere' has been made available on the ESS Open Archive. This research delves into the complex atmospheric dynamics of the mesosphere and lower thermosphere (MLT), an atmospheric region approximately 50 to 110 kilometers above Earth's surface. The study specifically investigates the year-to-year variations (interannual variability) of average wind patterns and the semidiurnal tide, a type of atmospheric wave with a 12-hour period, during the Antarctic summer. The ESS Open Archive, supported by organizations like the American Geophysical Union (AGU), serves as a reputable platform for the rapid dissemination of Earth and space science research, including preprints, posters, and presentations. The findings from such studies are crucial for enhancing our understanding of atmospheric coupling processes, which involve interactions between different layers of the atmosphere, and their broader implications for global climate systems. This research area holds significant relevance for countries like India, which actively engages in extensive polar research programs in both the Arctic and Antarctic. India operates permanent research stations in Antarctica and conducts comprehensive studies in atmospheric sciences, glaciology, and climate change. Understanding the dynamics of polar regions, even those geographically distant, is vital for improving global climate models and predicting phenomena that can impact the Indian monsoon and regional weather patterns. The article's headline accurately describes its technical scientific content, and the research aligns with ongoing international efforts in atmospheric and polar science.