Primary Convener:
Juan Añel, University of Vigo

Convener:
Shunrong Zhang, MIT Haystack Observatory
Romina Nikoukar, Johns Hopkins Applied Physics Laboratory

Early Career Convener:
Kimberlee Dube, University of Saskatchewan

Chair:
Juan Añel, Universidade de Vigo
Shunrong Zhang, MIT Haystack Observatory

The Middle Atmosphere and the Geospace (from the mesosphere to the exobase) are experiencing multi-decadal change due to increasing carbon dioxide. These effects have been predicted for several decades and are now becoming apparent in multiple data records. The cooling of the Middle Atmosphere and the Geospace was anticipated to result in a contraction of the atmosphere and result in a permanent reduction of density at fixed altitude. Variable solar activity complicates the assessment of Geospace change. The ongoing change has implications for the growing space economy, international space policy and law, and the space insurance industry. We welcome papers on all topics related to Middle Atmosphere and Geospace change: modeling of the effects of multi-decadal change, observations, and new technologies for systematic investigation of such changes. We particularly welcome contributions from members of the space industry to discuss their needs for knowledge of Geospace change.

Index Terms
0325 Evolution of the atmosphere
0340 Middle atmosphere: composition and chemistry
0350 Pressure, density, and temperature
0355 Thermosphere: composition and chemistry

Suggested Itineraries:
Climate Change and Global Policy
Space Weather

Neighborhoods:
3. Earth Covering

Cross-Listed:
GC - Global Environmental Change