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Space Climate Symposium, September 19-22, 2022

Krakow, Poland
Fully on-site meeting

Space Climate 8 Meeting Abstract

Solar Irradiance Effects on the Upper Atmosphere On Time Scales from Solar Rotation to Climate Change

Liying Qian (National Center for Atmospheric Research)

Liying Qian
High Altitude Observatory, National Center for Atmospheric Research, Boulder, CO, USA


Solar irradiance is the primary energy input to the thermosphere and ionosphere system. Solar irradiance (soft X-ray, extreme ultra-violet, and far ultra-violet) ionizes, dissociates, and excites the thermospheric constituents, create the ionosphere, and heat the thermosphere. In this presentation, we discuss solar irradiance effects on the thermosphere-ionosphere-mesosphere system on time scales from solar rotation, season, solar cycle, to climate change, using both data and model simulations. The data sets will include neutral density derived from satellite drag, and thermosphere composition data from TIMED/GUVI and NASA GOLD. Modeling results are from the Whole Atmosphere Community Climate Model – eXtended (WACCM-X), the National Center for Atmospheric Research (NCAR) thermosphere-ionosphere-electrodynamics general circulation model (TIE-GCM), and the NRLMSISE-00 empirical model.

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