Category Archives: News

Save the date – QOS 2024 Announcement

The Quadrennial Ozone Symposium Organizing Committee is pleased to announce the dates and location of QOS 2024. The meeting will be held in-person in Boulder, Colorado, USA from 15-19 July 2024, and hosted by the University of Colorado Boulder with a hybrid virtual option. We are excited to follow in the footsteps of a wonderful QOS 2021 graciously hosted online by Yonsei University, Korea. Please see below/attached the announcement poster and stay tuned for updates from the Organizing Committee on abstract submission, registration, venue, travel, and other information. We look forward to seeing everyone working on everything ozone science in Boulder and online in July 2024!

Tomorrow: next event of the Tipping Points Discussion Series

We invite you to join us for our upcoming discussion on Tipping Points in Education and Digitalisation, taking place on 25 May 2023, 15:30 – 17:00 CEST

This webinar is part of the Tipping Points Discussion Series organized by AIMES, the Earth Commission, the WCRP Safe Landing Climates Lighthouse Activity, and partners. The series aims to advance knowledge of tipping elements, irreversibility, and abrupt changes in the Earth system – both in natural and social systems. Our two speakers are: 

  • Raya Muttarak (University of Bologna) – Exploring the role of education as a potential accelerator of sustainable society
  • Ridhi Kashyap (University of Oxford) – Digital technologies as accelerators of information diffusion

The discussion will be moderated by Anne Goujon (IIASA)

All information and the link to register are available on the FutureEarth website.

WCRP Open Science Conference: Registrations open!

Registrations for the WCRP Open Science Conference in Kigali, Rwanda, are now open! Visit to register and to find further information.

We have also secured special rates at several hotels in Kigali. In you will find the link to the list of hotels and the booking system prepared by TravelZuri. Looking forward to seeing you all in Kigali!

Webinar series – WCRP Explaining and Predicting Earth System Change

The WCRP Explaining and Predicting Earth System Change Lighthouse Activity invites you to join the third webinar of the series that will provide a discussion forum on topics focused on predicting and explaining a range of different climate phenomena and events, while supporting the further development of a scientific agenda. 

This fourth webinar will focus on marine heatwaves and aspects related to a changing climate.


  • Alex Sen Gupta (University of New South Wales, Australia): Local processes and large scale drivers of marine heatwaves
  • Antonietta Capotondi (University of Colorado at Boulder, USA): Large-scale climate drivers of Northeast Pacific marine heatwaves
  • Regina Rodrigues (Federal University of Santa Catarina, Brazil): Marine heatwaves in the context of compound extreme events

The event will take place on 15th May 2023, from 13:00hs to 14:30hs UTC. Speakers will give a 20-minute talk each followed by a round table discussion, with questions from participants. 

Registrations are free and can be done via

CACTI workshop: Abstract submission open

The goal of the workshop is to review the progress since the last TriMIP workshop (TriMIP-3) that brought together the active and collaborative communities of AerChemMIP, RAMIP, RFMIP, and PDRMIP. This workshop will focus on advances in our understanding since AR6, identifying gaps and informing future research directions based on the community “Composition Air quality Climate inTeractions Initiative (CACTI): Emissions to Response”.
The hybrid workshop will be held in-person at GEOMAR in Kiel from Tuesday 13 June to Thursday 15 June 2023, with an option to join online. The workshop will consist of a mix of presentations and discussions, which we aim to partly record and make available with limited access. We kindly invite you to submit abstracts on your relevant work addressing at least one of the three CACTI goals:

  1. Characterize ERFs and assess adjustments from historical and future changes in atmospheric composition and SLCFs emissions in global models
  2. Quantify the climate and air quality responses to global and regional changes in SLCF emissions
  3. Understand the Earth System feedbacks through chemistry and aerosols in response to anthropogenic climate change

Abstract submission is open until 02 May 2023 and can be done by completing this form. Details on how to register will be announced in due course. Further details, including practical information for arranging travel, can be found on the CACTI webpage.
Further announcements will be made through this CACTI mailing list. If you have not signed up yet, we encourage you to subscribe by sending an email to ed.ra1685814082moeg@1685814082nioj-1685814082itcac1685814082.
We look forward to receiving your abstracts and seeing you in June. 
On behalf of the organising committee,
R. Allen, B. Collins, S. Fiedler, P. Griffiths, M. Kasoar, V. Naik, F. O’Connor, M. Schulz, C. Smith, T. Takemura, S. Turnock, D. Watson-Parris, D. Westervelt, L. Wilcox

Deadline approaching: Abstract submission to the Hunga Tonga Impacts workshop

This Friday is the Abstract deadline (21st April) for the online “Hunga-Tonga impacts” open science workshop (Tue 16th & Wed 17th May 2023).

SPARC has established a new cross-activity focus project on the impacts from the 2022 Hunga-Tonga Hunga-Ha’apai eruption (HTHH) and will co-ordinate a 2025 “Hunga-Tonga impacts report” aligned to the 2026 UNEP/WMO Scientific Assessment of Ozone Depletion.

We invite Abstracts on the full breadth of science around the Hunga-Tonga volcanic cloud and its impacts, The workshop aims to encourage collaboration and discussions towards the Hunga-Tonga impacts report, and we invite interested scientists from the atmospheric science and geoscience communities to join the meeting to hear latest findings on the eruption’s effects

The online meeting will be 2 half-day sessions (13:00UT to 17:30 UT), with Hunga-Tonga science talks, and the workshop website hosting links for discussion of online poster PDFs.

Abstract submission is via the workshop website (during registration):

We are grateful to SPARC for sponsoring the event, registration is £30 standard and £15 for ECR/students.

Best Regards,

Dr. Yunqian Zhu                 Dr. Graham Mann                 Dr Bill Randel      Dr. Paul Newman
(Univ. Colorado, USA)     (University of Leeds, UK)     (NCAR, USA)       (NASA GSFC, USA)

The SPARC Hunga-Tonga impacts activity leadership team.

Announcement: Past Global Changes (PAGES) Symposium 2023


The purpose of the meeting is to highlight the broad and diverse achievements of PAGES working groups. The symposium will be held in conjunction with the PAGES scientific steering committee (SSC) meeting

PAGES supporters and partners will also be invited.


Participation is free. 

Register online via this form:

The deadline for registration is 4 May 2023.

More information, e.g. the workshop program can be found at the meeting webpage.