Announcements

As mentioned during IROWG-11, in addition to the general IROWG mailing list, several subgroup mailing lists have been created to facilitate communication within specific IROWG subgroups. Currently, subgroup mailing lists are available for Climate, Innovation, NWP, and Space Weather. Each subgroup mailing list is managed independently from the general IROWG mailing list, and membership in one ...

Dear IROWG, The time for voting in a new IROWG co-chair is at hand. Ulrich Foelsche will be stepping down. The timeline is as follows: Nominations (including self) close on Monday, October 5, 2026 UTC 0700. Send an email to co-chairs@lists.irowg.org  with the nomination. Members of NWP organizations are encouraged. Instructions for voting will be sent by October 11, 2026. ...

Dear IROWG, It is with great sadness that we report the passing of Josep Aparicio while he was attending IROWG-11. The community is in shock and coping as best we can. We held a memorial during the IROWG-11 to honor him and his memory. We hope you join us in keeping his family in your thoughts. ...

Dear IROWG colleagues, At the latest Coordination Group for Meteorological Satellites (CGMS) plenary meeting (June 2026), IROWG was notified that CGMS Working Group III (WGIII) tasked IROWG with coordinating a scientific assessment of the impact of the decline in COSMIC-2 radio occultation (RO) observations expected as the constellation ages. The IROWG assessment is to inform the ...

We are pleased to announce that the summary report of the 3rd Polarimetric Radio Occultation (PRO) Workshop has now been published online in the Journal of the European Meteorological Society: https://doi.org/10.1016/j.jemets.2026.100045 The workshop materials, including presentations and additional information, are available through the following link: https://irowg.org/gnss-pro-workshop-gnss-pro-3/ We thank all participants and contributors for their valuable discussions and continued efforts ...

Please register for OPAC-IROWG 2026! ============================================== Conference registration is open until July 31: https://opacirowg2026.uni-graz.at/en/registration ============================================== Remember: the registration includes lunch and dinner (except Sunday), Get-together party, drinks during the poster session, conference dinner, wine tasting (we don’t force you to drink wine – but it is included), … Thanks to our sponsors: https://opacirowg2026.uni-graz.at/en/sponsors/ we have been able to keep the registration fee in a reasonable range, and ...

================================================ 2nd Announcement & Call for Papers,  March 31, 2026 We are pleased to announce: OPAC-IROWG 2026 International Workshop on Occultations for Probing Atmosphere and Climate Joint OPAC-8 & IROWG-11 Workshop September 10-16, 2026, Seggau Castle, Leibnitz near Graz, Austria https://opacirowg2026.uni-graz.at/en/ **************************************************************************** An attractive forum for everybody interested in atmospheric remote sensing by occultation methods and/or the use of occultation data in atmospheric physics, meteorology, and climate. **************************************************************************** Please forward ...

Dear IROWG, Date and venue have already been announced before – but just to make sure that you mark your calendar: IROWG-11 will be held together with the OPAC-8 Workshop from September 10–16 in Seggau Castle, Austria. The workshop website will be: https://opacirowg2026.uni-graz.at Julia Danzer and Marc Schwärz will join me as OPAC chairs, and Hui Shao and ...

Dear IROWG, The Polarimetric Radio Occultation (PRO) Workshop will be held next week, November 10–12, in Darmstadt, Germany with remote access. The workshop agenda is now available online . If you still would like to participate in this workshop remotely, please register through the website.  The remote access information will be sent to you. In case you have ...

Dear all, The “3rd GNSS Polarimetric Radio Occultations Workshop” will take place 10-12 November 2025, at the EUMETSAT headquarters in Darmstadt, Germany. Registration is now available at the workshop main page. Deadline is 25 Oct 2025.  This third workshop follows on to the “2nd GNSS Polarimetric Radio Occultation workshop” from 2023. It represents a forum for addressing multiple ...