CEDAR email: COSPAR CIRA session

[Marcin Pilinski]

Dear Colleagues,


We are organizing the COSPAR International Reference Atmosphere (CIRA) session at the 46th COSPAR Scientific Assembly in Florence, Italy, from 1-9 August 2026. The session covers all aspects of thermosphere modeling and forecasting, including drivers, drag and aerodynamic coefficients, observations, and data assimilation:


C4.2: Development of First-Principles and Empirical Models Related to the COSPAR International Reference Atmosphere
This event will consider the development and assessment of atmospheric models, both first-principles and empirical, for the COSPAR International Reference Atmosphere (CIRA). This session solicits presentations on recent advances in thermosphere, coupled upper atmosphere, and Whole Atmosphere Modeling and recommendations for future research and development, especially in the context of addressing satellite drag. Talks related to issues of applying first-principles models, or reduced-order models, to operational problems are welcomed. Descriptions of models with the potential of future operational transition are especially encouraged. Model construction and validation is limited by the availability of data. Description of the (re)processing of old and new data, i.e. neutral density, composition, and temperature measurements, for use in upper atmosphere model construction/validation will also be discussed, including the model drivers (e.g., F10.7, F30, Kp, Hp, Dst, etc) and their uncertainty and stability. It also includes near-real time assimilation efforts and any associated validation of the estimated thermospheric states.


Abstract submission closes on February 13th.


Thank you and best regards,
Sean Bruinsma and Marcin Pilinski

CIRA Session Link:
https://cedarscience.org/cedar-post-newsletter
The Assembly web page address is:
https://www.cospar-assembly.org<https://www.cospar-assembly.org/>
The Call for Abstracts may be found at:
https://issuu.com/jccospar/docs/call_for_abstracts_2026?fr=sMzY4Njg3MzM2Njg





Marcin Pilinski
Research Associate
Laboratory for Atmospheric and Space Physics
University of Colorado
3665 Discovery Dr.
Boulder, CO 80303
Phone 303-735-7680
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