Topical Discussion Meeting - Atmospheric Effects Topical Group - supporting the ISWAT initiative

Sean Bruinsma (CNES)
Wednesday 20/11, 11:15-12:30

The high-level objectives of the Atmospheric effects TG are modeling the neutral atmosphere and understanding its (sources of) variability, and its effect on satellite drag.

We will specifically focus on quantifying the effects due to the listed items below on satellite drag:

1 - What are the scales (time and space) of the density and wind variability due to EUV radiation, geomagnetic disturbances, and forcing due to disturbances propagating from lower altitudes?

2 - Which indices should be used to represent solar EUV/UV and geomagnetic activity?

3 - What is the accuracy of upper atmosphere density and wind models? How do we assess the models (data, metrics)?

4 - What is the accuracy of solar and geomagnetic activity forecasts?

5 - Which density data sets are pertinent to use in this study, i.e., for analysis and to improve models, and which information is missing.

The COSPAR ISWAT initiative also addresses this activity, and this topical discussion meeting aims at informing and interacting with the community.