Dear all,
On behalf of the OGTAC-CC, I kindly invite you to our 2026 interlaboratory comparison on the biomass burning tracers from module 1 and the primary biogenic source tracer compounds from module 2 (full list is attached).
......

Event:
Invitation to Aerosol In-Situ Community Meeting
Topic:
Aerosol In-Situ Community Meeting
Date:
27 May, 2026
Time:
9 - 11:30 a.m. CET
Location:
online meeting via zoom

Event:
Invitation to Aerosol In-Situ Community Meeting WCCAP
Topic:
The agenda will be published shortly.
Date:
28 May, 2026
Time:
9 - 11:30 a.m. CET
Info:
online link will come soon
Location:
online meeting via zoom

Dear ACTRIS Aerosol In Situ Community,

For your information and consideration, the upcoming Summer School on Formation and Growth of Atmospheric Aerosols, which will be held in Hyytiälä, Finland, from 17–27 August 2026.
The summer school will bring together students and early-career researchers from across the field, offering lectures, hands-on activities, and opportunities to exchange ideas with leading experts. In addition to being scientifically stimulating, it will provide a great chance to build connections within the atmospheric science community.

Sincerely, Silja Häme