CEDAR email: Trend2026 --Registration and Abstract submission are now open

[Liying Qian]

Dear CEDAR community,

We are pleased to announce that *Registration and Abstract submission are
now open *for the *13th International Workshop on Long-Term Changes and
Trends in the Atmosphere <https://trends2026.casconf.cn/>*, to be held *May
18–22, 2026*, in *Beijing, China*.

Topics include long-term variations and trends in the middle atmosphere,
ionosphere, and thermosphere, as well as their underlying physical,
chemical, and radiative mechanisms.

We look forward to your participation!

Sincerely,
Liying Qian
on behalf of the Scientific and Local Organizing Committee
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