- Announcements - lists.irowg.org

3rd Polarimetric Radio Occultation Workshop - Save the dates!
by Estel Cardellach 26 Jun '25

26 Jun '25

*The Third Polarimetric Radio Occultations Workshop will take place on10-12 November 2025 at EUMETSAT HQ in Darmstadt, Germany.* The meeting will be in a hybrid format. IROWG and ITWG members are encouraged to participate. In person is preferred. A proper announcement with more details will be sent soon, for now, please _save the dates_! Estel, Joe, Christian

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Call for Papers: ROMEX Special Issue in Atmospheric Measurement Techniques (AMT)
by Hui Shao 23 Jun '25

23 Jun '25

Dear IROWG and ROMEX participants, I’m pleased to announce that the *Atmospheric Measurement Techniques (AMT)* special issue titled *“The Radio Occultation Modeling EXperiment (ROMEX): observational quality, processing, and numerical weather prediction (NWP) applications”* is now open for submissions. ROMEX <https://irowg.org/ro-modeling-experiment-romex/>, an IROWG-led initiative, aims to assess the impact of ~35,000 daily radio occultation (RO) profiles—collected from 13 missions during September–November 2022—on numerical weather prediction. This international campaign involves contributions from data providers, processing centers, and forecasting institutions across the global research and operational communities. The special issue welcomes papers using ROMEX data on topics including, but not limited to: - RO data quality and processing - Evaluation and validation of RO datasets - Impact studies in NWP and other atmospheric applications *Submission is open from 1 May 2025 to 31 December 2026* (extensions possible). Submit here: https://editor.copernicus.org/AMT/manuscript_registration Please ensure the correct special issue title is selected during submission. Editorial assignment follows a *first-come, first-served* policy. A full description of the special issue is available at: https://www.atmospheric-measurement-techniques.net/articles_and_preprints/s… *(under 2025)* We look forward to your contributions! Hui Shao On behalf of ROMEX steering committee

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Request feedback on ROM SAF NRT observations monitoring
by Neill Bowler 21 Jun '25

21 Jun '25

OFFICIAL Hi all, One of the activities that the ROM SAF does is the monitoring of observations, which can be viewed on the following websites: https://rom-saf.eumetsat.int/monitoring/index.php https://www.ecmwf.int/en/forecasts/quality-our-forecasts/monitoring/gpsro-m… In planning for the next phase of the ROM SAF (known as CDOP-5) we'd like to understand how useful you find the observations monitoring systems and provision of observation uncertainties. This will help us to know where to put the most effort in future. So, would you be willing to answer this short questionnaire: https://forms.office.com/Pages/ResponsePage.aspx?id=YYHxF9cgRkeH_VD-PjtmGeS… The form closes at the end of June, so please submit responses before then. Many thanks, Neill (on behalf of Neill, Mary, Sean and Katrin) Neill Bowler GNSS radio occultation Met Office FitzRoy Road Exeter EX1 3PB United Kingdom Tel: +44 (0)3301 351859 neill.bowler(a)metoffice.gov.uk<mailto:neill.bowler@metoffice.gov.uk> Web: www.metoffice.gov.uk<http://www.metoffice.gov.uk/> Pronouns: he, him, his. Why specify gender pronouns?<https://www.cultureamp.com/blog/sharing-gender-pronouns-at-work> [A button with "Hear my name" text for name playback in email signature]<https://www.name-coach.com/neill-bowler> OFFICIAL

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a STAR JGR paper
by Shu-peng Ho - NOAA Federal 11 Jun '25

11 Jun '25

Dear all, We are pleased to let you know that we have just published a JGR paper: Construction of Temperature Climate Data Records in the Upper Troposphere and Lower Stratosphere Using Multiple RO Missions From September 2006 to July 2023 at NESDIS/STAR Jun Zhou <https://agupubs.onlinelibrary.wiley.com/authored-by/Zhou/Jun>, Shu-Peng Ho <https://agupubs.onlinelibrary.wiley.com/authored-by/Ho/Shu%E2%80%90Peng> , Xinjia Zhou <https://agupubs.onlinelibrary.wiley.com/authored-by/Zhou/Xinjia>, Xi Shao <https://agupubs.onlinelibrary.wiley.com/authored-by/Shao/Xi>, Guojun Gu <https://agupubs.onlinelibrary.wiley.com/authored-by/Gu/Guojun>, Yong Chen <https://agupubs.onlinelibrary.wiley.com/authored-by/Chen/Yong>, Tung-Chang Liu <https://agupubs.onlinelibrary.wiley.com/authored-by/Liu/Tung%E2%80%90Chang> , Xin Jing <https://agupubs.onlinelibrary.wiley.com/authored-by/Jing/Xin> First published: 09 June 2025 https://doi.org/10.1029/2024JD041295 https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2024JD041295 One of the key findings is summarized in Figure 7, which demonstrates the RO-RO biases for COSMIC-1 - Metop GRAS, Spire - Metop GRAS, and COSMIC2 - Metop GRAS. The temperature MMC CDR in the UT/LS is constructed using COSMIC-1, Metop-A, -B, -C GRAS, and Spire. The MMC data can be downloaded from https://gpsmet.umd.edu/gnssro/download_mmta.php Best regards, Ben *==============================================* *Shu-peng Ben Ho, Ph. D.* *GNSS Radio Occultation** Program Lead Scientist* *NESDIS RO Science and Quality Assessment Grant Manager* *NOAA Center for Satellite Applications and Research (STAR)* *NCWCP, E/RA-21 Office# 2824* *5830 University Research Court, * *College Park, MD 20740-3818* *Tel : (301) 683-3596* *Email: shu-peng.ho(a)noaa.gov <shu-peng.ho(a)noaa.gov>* *STAR GNSS RO Center: **https://gpsmet.umd.edu/gnssro/index.php <https://gpsmet.umd.edu/gnssro/index.php>* *STAR GNSS RO Data Service: **https://gpsmet.umd.edu/gnssro/download.php <https://gpsmet.umd.edu/gnssro/download.php>* *Publication: researchgate.net/profile/Shu-Peng-Ho/publications <http://researchgate.net/profile/Shu-Peng-Ho/publications>* *==============================================*

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Sentinel-6 Galileo BUFR products release on GTS
by Galley, Chad R (US 335S) 13 May '25

13 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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