Front Matter -- Energetics and Dynamics of the Upper Atmosphere. Joule Heating in the Thermosphere / Arthur D Richmond -- Momentum and Energy Budgets in the High-Latitude Lower Thermospheric Wind System / Young-Sil Kwak, Arthur D Richmond -- Upper Thermospheric Winds / Wenbin Wang, Alan G Burns, Jing Liu -- Influence of Nonhydrostatic Processes on the Ionosphere-Thermosphere / Yue Deng, Cissi Y Lin, Qingyu Zhu, Cheng Sheng -- The Middle- and Low-Latitude Neutral Wind Dynamo / Astrid Maute -- Upper Atmospheric Composition. Neutral Composition in the Upper Atmosphere / Alan G Burns, Wenbin Wang, Liying Qian -- Storm-Time Neutral Composition Changes in the Upper Atmosphere / Yongliang Zhang, Larry J Paxton -- Neutral Hydrogen in the Terrestrial Thermosphere and Exosphere / Edwin Mierkiewicz -- Low and Upper Atmosphere Coupling Through Waves. Atmosphere-Ionosphere (A-I) Coupling by Solar and Lunar Tides / Jeffrey M Forbes -- Planetary Waves and Their Impact on the Mesosphere, Thermosphere, and Ionosphere / Jia Yue, Ruth Lieberman, Loren C Chang -- Longitudinal Variation in the Mass Density of the Thermosphere / Yasunobu Miyoshi -- Upper Atmosphere Structure and Variability. Equatorial Thermosphere Anomaly / Jiuhou Lei -- Structured Storm-Time Polar Ionosphere and Its Drivers / Jing Liu, Wenbin Wang, Alan G Burns, Qinghe Zhang -- Solar Flare Effects on the Thermosphere and Ionosphere / Liying Qian, Thomas N Woods -- Day-to-Day Variability of the Thermosphere and Ionosphere / Huixin Liu, Yosuke Yamazaki, Jiuhou Lei -- Response of the Ionosphere to Varying Solar Fluxes / Libo Liu, Yiding Chen, Huijun Le -- Long-Term Trends in the Upper Atmosphere / Jan La¿Łtovi¿́¿⁻ka -- Upper Atmosphere Data Assimilation. Inference of Hidden States by Coupled Thermosphere-Ionosphere Data Assimilation / Tomoko Matsuo, Chih-Ting Hsu -- Upper Atmosphere Observations. The Ground-Based Airglow Imager Network in China / Jiyao Xu, Qinzeng Li, Longchang Sun, Xiao Liu, Wei Yuan, Wenbin Wang, Jia Yue, Shunrong Zhang, Weijun Liu, Guoying Jiang, Kun Wu, Hong Gao, Chang Lai -- MLT Science Enabled by Atmospheric Lidars / Chiao-Yao She, Alan Z Liu, Tao Yuan, Jia Yue, Tao Li, Chao Ban, Jonathan S Friedman -- Remote Sensing of Magnetic Fields Induced by Electrojets From Space / Jeng-Hwa Yee, Jesper Gjerloev, Dong Wu -- Remote Sensing of Global Lower Thermospheric Winds / Jeng-Hwa Yee, Imran Mehdi, Darren Hayton, Jose Siles, Dong Wu -- Exploring the Upper Atmosphere / Larry J Paxton, Yongliang Zhang, Hyosub Kil, Robert K Schaefer.