8th International Radio Occultation Working Group Meeting - IROWG-8

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Key Dates

Feb. 5, 2021 Abstract Submission Deadline
Mar. 10, 2021 Abstracts Accepted Notification
8th International Radio Occultation Working Group Meeting - IROWG-8
Hosted by NOAA / UCAR
April 7-9, 12 and 13, 2021
7 April, 2021 to 13 April, 2021
Virtual Meeting

An international workshop for atmospheric sensing by radio occultation methods and the use of radio occlusion data in atmospheric physics, meteorology, and climate.

The 8th IROWG Workshop is an opportunity for the GNSS RO community to present and discuss the latest scientific, technical, and programmatic developments in the area.

Deadline for Abstract Submission has been extended.

Meeting Objective

The objective of the workshop is to improve the management and use of RO measurements for operational and science applications.

  • Due to COVID-19, the 2021 workshop will be split into two sessions: 1) a virtual workshop April 7-13, 2021, and 2) a hybrid in-person/virtual workshop in the Washington, DC area in September 2021 (details to be announced).
  • The April virtual workshop is abbreviated. It will provide key scientific/technical/programmatic updates, and allow working groups to prepare inputs for CGMS meetings in summer 2021.
  • The September hybrid workshop will allow more time for presentations from the broader community as well as in-person discussions.


We are collecting feedback to help with the planning process of an in-person, hybrid workshop in September 2021. Please complete this very short survey regarding attendance to an in-person, hybrid workshop in September 2021.

Topics to be discussed at the workshop will include:

  1. Status and assessments of “agency-led” GNSS RO missions (e.g., COSMIC-2, FY-3C, Metop, PAZ)
  2. Status and assessments of commercial missions
  3. Climate applications
  4. Improving the impact of GNSS RO measurements in operational NWP and climate reanalyses
  5. Improving GNSS RO retrievals in the lower troposphere and upper stratosphere
  6. Estimating the impact of future GNSS RO missions with OSSEs and the Ensemble of Data Assimilations approach
  7. Ionospheric retrievals and space weather applications 
  8. New innovations and applications of RO data

General Workshop Format

With about 125 participants it is planned to have a workshop with no parallel sessions, high-visibility of posters and ample informal possibilities to enter into scientific discussion.

Presentation Types

Oral presentations and posters will be offered in the virtual setting, detailed information will be forthcoming.


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Workshop Contact Information

Please feel free to contact us with any questions concerning the workshop at:
Email: irowg-8@ucar.edu
Phone: 303-653-4321 (Heidi Allen)


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