CEDAR email: IUGG2023, Berlin Germany, July 2023

[Liying Qian]

Dear Colleagues,

The 28th General Assembly of the IUGG will take place in Berlin, Germany
from 11-20 July 2023:

https://www.iugg2023berlin.org/home-2/

*The abstract submission deadline is February 14, 2023*

*Symposium JA06 is a joint **IAGA, IAMAS/ICMA* *symposium on
"Long-Term Changes in the Stratosphere, Mesosphere, Thermosphere, and
Ionosphere".*

*We would like to welcome you to submit an abstract to JA06
at: https://www.iugg2023berlin.org/abstract-submission/
<https://www.iugg2023berlin.org/abstract-submission/>*

Description
Long-term changes of greenhouse gas concentrations not only cause
troposphere climate change, they also cause long term changes in the middle
and upper atmosphere. Other drivers, such as the long-term changes of the
Earth's magnetic field, solar irradiance, and geomagnetic activity, can
also contribute to the long-term changes in the atmosphere, especially in
the upper atmosphere. Note that in atmospheric science, long term changes,
or trends, refer to changes on a time scale longer than one solar cycle (~
11 years). We welcome papers on investigating trends in the stratosphere,
mesosphere, thermosphere, and ionosphere, dealing with ground based as well
as satellite borne observations, model simulations, theoretical analyses,
long term data quality issues, methods of determination of trends, and
related laboratory experiments.

Looking forward to seeing you at IUGG2023 in Berlin, Germany, July 11-20,
2023.

Best regards,

Convener: Liying Qian (USA, IAGA)
Co-Convener(s): Jan Lastovicka (Czech Republic, IAGA), Bernd Funke (Spain,
UAMAS)
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