- Announcements - lists.irowg.org

Sentinel-6 Galileo BUFR products release on GTS
by Galley, Chad R (US 335S) 12 May '25

12 May '25

Dear NWP centers: Sentinel-6 recently made a flight software update to enable tracking occultations of Galileo satellites. Starting Tuesday, May 13, 2025, the BUFR products of Galileo occultations processed in near-real-time will be released on GTS on or around 16:00 UTC, depending on the timing of the telemetry downlinks. Please let us know if you have any questions or encounter any issues with the new Galileo data. Best, Chad, on behalf of the Sentinel-6 RO team [JPL logo] Chad Galley Technologist 3x | Near Earth Tracking Systems (335S) JPL 4800 Oak Grove Drive Pasadena, CA 91109 Mail Stop 238-600 M: 410.491.0024 O: 818.354.1013 F: 818.393.4965 chad.r.galley(a)jpl.nasa.gov<mailto:chad.r.galley@jpl.nasa.gov>

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IROWG-10 meeting minutes available online
by Hui Shao 29 Mar '25

29 Mar '25

Dear IROWG, Along with the CGMS-52 working papers and presentations, the long-awaited IROWG-10 Meeting Minutes and Summary is now available on the IROWG documentation page <https://irowg.org/documents/>. You can access this document directly here: IROWG-10 Minutes & Summary <https://irowg.org/wpcms/wp-content/uploads/2025/03/IROWG10_Minutes_Summary_…> . Please take a moment to review, and feel free to let me know if any corrections are needed. Thanks, Hui Co-chair of IROWG

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Postdoc position at ICE-CSIC, Barcelona related to GNSS-PRO
by Ramon Padullés 28 Mar '25

28 Mar '25

Dear colleagues, Please find below an offer for a postdoc position at the ICE-CSIC, in Barcelona. The position will be focused on using GNSS Polarimetric Radio Occultations combined with passive microwave data to further understand and characterize heavy precipitation events. More details in the following link: https://ice.csic.es/about-us/jobs?view=article&id=726&catid=2 Please circulate this with anyone you think might be interested, Regards, Ramon

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CGMS-53 IROWG documents and presentations now available online
by Hui Shao 27 Mar '25

27 Mar '25

Dear IROWG, This week marks the CGMS-53 Working Group meeting. Our IROWG documents and presentations - building on insights from IROWG-10 and the Second ROMEX Workshop - have been uploaded to the IROWG website: 🔗 IROWG Documents <https://irowg.org/documents/> (CGMS-53 Documents) They are also available on the CGMS-53 website under the WGII tab: 🔗 CGMS-53 Website <https://www.cgms-info.org/agendas/agendas/CGMS53WG> A huge thank you to everyone who contributed to the workshops, discussions, and recommendations! Your efforts are highly recognized and appreciated by the CGMS WGII leadership, underscoring the impact of our collective contributions. Looking forward to our next collaborative efforts! Hui Shao Co-chair of IROWG UCAR/JCSDA

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New PhD Position at GFZ: Ionospheric irregularities
by Jens Wickert 03 Mar '25

03 Mar '25

Dear colleagues, please note a recent announcement of a new PhD position on research on ionospheric irregularities using ground and satellite based GNSS data in our Section 1.1 Space Geodetic Techniques at GFZ. The position description is available here: https://www.gfz.de/en/career/job-offers/details/10203 Please circulate this information within your institutes. With kind regards Jens Wickert

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Re-release of Sentinel-6 MF BUFR products to GTS
by Galley, Chad R (US 335S) 24 Feb '25

24 Feb '25

Dear NWP centers, Just a short note to let you know that the Sentinel-6 MF flight software update to add tracking of Galileo occultations was successfully installed on February 5, 2025. After a short period assessing the GPS and GLONASS data, we have confirmed that the performance of the GPS and GLONASS NRT BUFR products are similar to their performance before the software upload. As a result, we are prepared to re-release the BUFR products for distribution on GTS starting Tuesday (February 25, 2025) within 15:00-17:00 UTC – the specific time will depend on the timing of the orbit downlinks. Please note that only GPS and GLONASS BUFR products will be distributed at this time while the new Galileo occultations continue to be assessed. We will provide a follow-up email when Galileo BUFR products will be available on GTS. Best, Chad Galley, on behalf of the S6 RO Team from JPL and EUMETSAT

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Ionospheric monitoring and Space Weather with RO: a session on the forthcoming URSI Conference
by Riccardo Notarpietro 20 Feb '25

20 Feb '25

Dear all. This email is to advertise you about a session planned for the next URSI Asia-Pacific Radio Science Conference (AP-RASC 2025<https://ap-rasc.com/home.php>, Sydney, Australia, 17-22 August 2025) about the exploitation of RO data for Ionospheric Monitoring and Space Weather. The session (see here below a brief description) is organized within the URSI Commission G (Ionospheric Radio and Propagation)<https://ursi.org/files/G/TOR.htm> activities. All the information about paper submission (deadline, February, 20th 2025) can be found here<https://ap-rasc.com/papersubmission.php>. Session G01: GNSS Radio Occultation and zenith data from Low Earth Orbit: advancements on measurements, data assimilation and models Description: Nowadays several CGMS (Coordination Group for Meteorological Satellites) coordinated and commercial Low Earth Orbiting (LEO) satellites host Global Navigation Satellite System (GNSS) receivers. Topside and radio occultation measurements are becoming fundamental to map the 4D distribution of the free electrons in the Earth atmosphere. The assimilation of such GNSS dual frequency measurements into numerical models has in fact the potential to contribute significantly to the improvement of the ionosphere and plasmasphere monitoring, forecasting and modelling, with important benefits for a better understanding of the space weather. Moreover, techniques for measuring and mapping turbulence strength from small-scale irregularities are also emerging. In this session the contributions on new techniques to estimate the electron density and electron content distribution and irregularities from GNSS LEO topside and radio occultation data, their ingestion into data assimilation models and corresponding applications (e.g. detection of Space Weather, earthquake and tsunami signatures, support to precise navigation), are welcome. Best regards, Riccardo Notarpietro, Remote Sensing Scientist - Radio Occultation Any email message from EUMETSAT is sent in good faith but shall neither be binding nor construed as constituting a commitment by EUMETSAT, except where provided for in a written agreement or contract or if explicitly stated in the email. Please note that any views or opinions presented in this email are solely those of the sender and do not necessarily represent those of EUMETSAT. This message and any attachments are intended for the sole use of the addressee(s) and may contain confidential and privileged information. Any unauthorised use, disclosure, dissemination or distribution (in whole or in part) of its contents is not permitted. If you received this message in error, please notify the sender and delete it from your system.

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Refined schedule for the Sentinel-6A RO instrument update and BUFR outages on GTS
by Galley, Chad R (US 335S) 29 Jan '25

29 Jan '25

Dear NWP centers: To update our previous email regarding the instrument software update to Sentinel-6 A (Michael Freilich), the upload will begin around 08:30 UTC on January 30, 2025 and end around 11:30 UTC on February 5, 2025. Note that the end may be extended if needed. While we are anticipating very brief outages once per day of up to 30 minutes, please be advised that there could be longer outages if, e.g., quality issues manifest. After the software upload is completed, the Sentinel-6 A BUFR products will not be distributed on GTS for 7-10 days. After this brief checkout period to confirm there is no impact to product performance, the GPS and GLONASS BUFR products will be back online while the performance of the Galileo products continues to be assessed. A separate announcement will follow when the GPS and GLONASS BUFR products are back online and another when the Galileo BUFR products become available on GTS. Sincerely, Chad Galley, on behalf of the S6 RO Team from JPL and EUMETSAT

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Upcoming Sentinel-6A RO instrument update
by Ao, Chi O (US 335G) 22 Jan '25

22 Jan '25

Dear NWP centers: We would like to inform you that a major software update to Sentinel-6 A (aka S6MF) is being planned to occur no earlier than January 27, 2025 to enable the tracking of Galileo radio occultation. During the upload period (which is expected to last several days) there could be instrument outages impacting the number of BUFR products distributed on the GTS. We expect little or no impact on GPS and GLONASS RO from this update. Therefore, we plan to begin releasing these data operationally to the GTS after a 7-10 day checkout period following the upload has completed. Another announcement will follow when the GPS and GLONASS BUFR products are being distributed operationally on GTS. The Galileo RO data will be processed and be made available offline separately for a more extensive evaluation by NWP centers before their operational release. If you have any question, please do not hesitate to contact us. Sincerely, Chi Ao, on behalf of the S6 RO Team from JPL and EUMETSAT

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Reminder: ROMEX workshop registration deadline Jan 20, 2025
by Hui Shao 17 Jan '25

17 Jan '25

Dear all, This is a reminder that registration for the upcoming ROMEX workshop will close on January 20, 2025. The agenda for the workshop will be created afterward. All ROMEX participants are strongly encouraged to join the workshop. The workshop will be hybrid, but in-person participation is highly encouraged. The workshop registration page can be found here: https://www.eventsforce.net/eumetsat/frontend/reg/thome.csp?pageID=26230&ev… Thanks, Hui =================================== Dr. Hui Shao She/her/hers Project Scientist Joint Center for Satellite Data Assimilation (JCSDA) NOAA Center for Weather and Climate Prediction 5830 University Research Ct, College Park, MD 20740 Email: huishao(a)ucar.edu Email: hui.shao(a)noaa.gov ===================================

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