09:00-10:25

Morning Session 1

Specific Occultation Methods and New Techniques

Chair: R. Kursinski

09:00-09:20

GNSS Remote Sensing: Recent Results from GFZ (invited)

J. Wickert, N. Antonoglou, C. Arras, M. Asgarimehr, A. Brack, G. Dick, A. Kepkar, C. Männel, C. Nguyen, M. Ramatschi, T. Schmidt, H. Schuh, M. Semmling, M. Song, R. Thundathil, K. Wilgan, T. Xiao, and F. Zus – Abstract, Presentation

Geosynchronous Radio Occultation Processing with GOES

D. Hunt, S. Gleason, I. Cherniak, I. Zakharenkova, S. Sokolovskiy, D. Freesland, A. Krimchansky, J. McCorkel, and G. Ramsey – Abstract, Presentation

A Multi-center exercise on the sensitivity of PAZ GNSS Polarimetric RO for NWP modelling (invited)

E. Cardellach, R. Padullés, F.J. Turk, M. de la Torre Juárez, C.O. Ao, K.-N. Wang, M. I. Oyola, S. Hristova-Veleva, M. J. Murphy,  J. S. Haase, D. Hotta, and K. Lonitz – Abstract, Presentation

What does Artificial Intelligence tell us about the geophysical information content in GNSS polarimetric RO?

E. Cardellach, R. Padullés, I. Cobas, and D. Gallego – Abstract, Presentation

Balloon-borne GNSS Radio Occultation Sounding from Commercial Off-the-Shelf Receiver

F. Xie, K. J. Nelson, B. C. Chan, A. Goel, J. Kosh, T. G. R. Reid, C. R. Snyder, P. M. Tarantino – Abstract, Presentation

10:55-12:30

Morning Session 2

Future Missions

Chair: J. Wickert

10:55-11:15

Radio Occultation in NOAA's Next-Generation Environmental Observation Architecture (invited)

R. Ullman – Abstract, Presentation

Preliminary Results of FY-3E GNOS II Mission: GNSS RO and GNSS-R (remote)

C. Liu, Y. Sun, W. Bai, F. Huang, G. Tan, G. Yang, X. Hu, M Liao, Q. Du, X. Wang, X. Meng, J. Xia, C. Yin, P. Hu, and Y. Liu – Abstract, Presentation

GRAS-2 RO mission

J. Christensen, A. Carlström, J. Rasch, and T. Liljegren – Abstract, Presentation

Simulation-Retrieval Demonstration of Gravity Wave Tomography by Radio Occultation

S. Leroy, J. Hegarty, S. Leidner, and R. Fitzgerald – Abstract, Presentation

Constellation Design Enabling Augmented and Persistent Radio Occultation with Ultra-Low Latency

C. Barsoum, W. Xia-Serafino, and W. Gullotta – Abstract, Presentation

Technology Roadmap for Future GNSS Radio Occultation and Reflectometry

T. Burger – Abstract, Presentation

14:00-15:05

Afternoon Session 1

Occultations in NWP 2 – Tropical Cyclones and more

Chair: H. Shao

14:00-14:20

Impact of Radio Occultation Data on the Prediction of Tropical Cyclogenesis (invited)

Y.-H. Kuo, and H.-F. Teng – Abstract, Presentation

Optimizing the RO Data Assimilation Approach for the Prediction of Tropical Cyclogenesis with the JEDI/FV3 Global NWP System

H. Zhang, B. Kuo, H. Shao, and J.-P. Weiss – Abstract, Presentation

Can COSMIC-2 bending angle data assimilation improve HWRF tropical cyclone forecasts? A preliminary evaluation using six cases from the 2020 Atlantic hurricane season

W. Miller, Y. Chen, S.-P. Ho, and X. Shao – Abstract, Presentation

Impact of GNSS radio occultation data on the prediction of convective systems associated with a Mei-Yu front

Y.-H. Kuo, J. Sun, Y. Zhang, Y. Ho, and J-S. Hong – Abstract, Presentation

15:30-17:00

Afternoon Session 2

IROWG

Chair: A. von Engeln

15:30-16:00

IROWG: Report from CGMS-50 and Open Actions

T. Mannucci, U. Foelsche, S. Healy, and H. Shao – Presentation 1, Presentation 2

Proposed new BUFR Format

N. Bowler – Presentation

RO Modeling Experiments (ROMX)

B. Ruston – Presentation

17:00-19:00

Poster Session

Chair: F. Ladstädter

P1

KMA’s Study on Development of GNSS-RO Receiver for Meteorological Measurement

J. Kim, S. Chung, and D. Kim – Abstract

P2

Quality control measures in EUMETSAT's RO processing

C. Marquardt, Y. Andres, L. Butenko, A. von Engeln, F. Martin-Alemany, R. Notarpietro, S. Padovan, S. Paolella, F. Sancho, V. Nguyen, and V. Irisov – Abstract

P3

Mitigation of TACAN/DME Interferences for L5/E5 Space-Borne GNSS Receivers in LEO with Focus on Radio-Occultation Missions

C. Dulery, L. Lestarquit, R. Prevost, and M. Iervolino – Abstract, Poster

P4

Empirical look-up tables for polarimetric phase delay to precipitation likelihood using ROHP-PAZ Polarimetric Radio Occultation and SSMIS/GMI Microwave-based estimates of water paths.

M. de la Torre Juárez, K.-N. Wang, F. J. Turk, R. Padullés, C. O. Ao, and E. Cardellach – Abstract

P5

COSMIC-2 Ionospheric Product Latency Improvements and Impacts

W. Gullotta, C. Barsoum, and W. Xia-Serafino – Abstract

P6

RO studies with the NeQuick ionospheric electron density model

B. Nava – Abstract

P7

Sporadic-E morphology from 13 years of COSMIC-1

B. Bergsson, and S. Syndergaard – Abstract, Poster

Observations of Ionospheric Disturbances - From Space Weather Events to Tonga Volcano Eruptions

C. Lin, S.-P. Chen, P. K. Rajesh, C. Y. Lin, and C. Y. Huang – Abstract

PlanetiQ GNSS RO Measurements of the Ionosphere

R. Kursinski, J. Brandmeyer, R. Gooch, A. Botnick, M. Leidner, C, Oliveir, S. Leroy, and C. Alcala – Abstract

Real time on board processing of ionosphere signals by TGRS on COSMIC-2

T. Meehan, J. Tien, P. Straus, and J. Braun – Abstract

Localizing Ionospheric Irregularities in GNSS Radio Occultation Signals with Back Propagation Method: Assessment

V. Ludwig-Barbosa, J. Rasch, A. Carlström, J. Christensen, T. Sievert, V. T. Vu, and M. I. Pettersson – Abstract

Effects of background water vapor information on the 1D-Var retrieval of Radio Occultation wet profiles of CDAAC/UCAR and WEGC, during Atmospheric River events

B. Rahimi and U. Foelsche – Abstract

Combining GNSS-RO and microwave sounder in joint retrieval of atmospheric temperature and water vapor structures

K.-N. Wang, C. O. Ao, M. G. Morris, G. A. Hajj, F. J. Turk, and A. W. Moore – Abstract

Detection of the diurnal Variation of the Planetary Boundary Layer Height over Oceans using COSMIC-2 Data

X. Zhou and S.-P. Ho – Abstract, Poster

Comparison of COSMIC temperature profiles with MIPAS instrument and EMAC model

A. Laeng, MIPAS team, and EMAC team – Abstract

GNSS Radio Occultation Data in the AWS Cloud: AWS Architecture

A. McVey, S. Leroy, S. Leidner, and J. Martin – Abstract

Implementation of the Super-Refraction Correction for GNSS RO Data at the STAR

S. Kireev, Y. Chen, S.-P. Ho, and Y. He – Abstract, Poster

Real-time and retrospective monitoring and evaluation of bending angle with JEDI

B. Ruston, H. Shao, F. Vandenberghe, F. Diniz, H. Zhang, and L. Hayden – Abstract

Initial experiments with vertical smoothing of GNSS-RO bending angles

N. Bowler, C. Marquardt, and K. Lonitz – Abstract

GNSS Radio Occultation interpolated by Machine Learning and Bayesian Interpolation

E. Shehaj, S. Leroy, K. Cahoy, A. Geiger, L. Crocetti, G. Moeller, B. Soja, and M. Rothacher – Abstract

Validation of Spire Radio Occultation Retrievals with SNPP ATMS Microwave and Radiosonde Measurements

X. Shao, S.-P. Ho, Y. Chen, X. Zhou, and B. Zhang – Abstract, Poster

IROWG-8 Virtual Meeting Hosted by NOAA

A. Gonzalez, R. Ullman, J. Clegg, S.-P. Ho, K. Eaves, S. Yaary, K. Samuel, and J.-P. Weiss – Abstract

FORMOSAT-7/COSMIC-2 Space Weather Data Products

J. J. Braun, N. Pedatella, I. Zakharenkova, Q. Wu, I. Cherniak, T. Van Hove, H. Huelsing, R. Heelis, M.-Y. Chou, P. Straus, E. Yizengaw, B. Valant-Weiss, L. Gelinas, C. Carrano, K. Groves, W. McNeill – Abstract

09:00-10:45

Morning Session 1

Methodology 2 – Processing

(Chair: J. P. Weiss)

09:00-09:15

Impact of the GNSS clock rate on Radio Occultation bending angles

S. Padovan, Y. Andres, S. Paolella, A. Von Engeln, R. Notarpietro, L. Butenko, F. M. Alemany, F. Sancho, and C. Marquardt – Abstract, Presentation

Precise Orbit Determination of Low Earth Orbiting Satellites for Climate Applications Including Uncertainty Estimation

J. Innerkofler, C. Pock, G. Kirchengast, M. Schwärz, A. Jäggi, Y. Andres, and C. Marquardt – Abstract, Presentation

On the impact of signal cutoff and smoothing on systematic and random uncertainty in RO retrievals

C. Marquardt, Y. Andres, L. Butenko, A. von Engeln, F. Martin-Alemany, R. Notarpietro, S. Padovan, S. Paolella, and F. Sancho – Abstract, Presentation

L1-L2 bending angle fitting and L2 extrapolation in the troposphere

S. Paolella, A. Von Engeln, S. Padovan, R. Notarpietro, Y. Andres, F. Martin Alemany, L. Butenko, C. Marquardt, and F. Sancho – Abstract, Presentation

Radial asymmetry correction assessment by end-to-end simulations and analysis of RO data

V. Proschek, M. Schwärz, J. Innerkofler, S. Syndergaard, and G. Kirchengast – Abstract, Presentation

Development of excess phase processing algorithm for multi-RO missions and data quality improvements at STAR

B. Zhang, S.-P. Ho, J. Dong. Y. Chen, X. Shao, and X. Zhou – Abstract, Presentation

A one-dimensional variational ionospheric retrieval for truncated GNSS Radio Occultation measurements

S. Healy, I. Culverwell, and S. Elvidge – Abstract, Presentation

11:15-12:35

Morning Session 2

Atmospheric Physics and Climate 1 – Hunga Tonga and more

Chair: S. Leroy

11:15-11:35

Stratospheric water vapor from the Hunga Tonga volcanic eruption deduced from COSMIC-2 GNSS-RO observations (invited)

W. Randel, B. Johnston, J. Braun, and S. Sokolovskiy – Abstract, Presentation

Investigating the atmospheric response to the January 2022 Hunga Tonga eruption through GNSS radio occultations

P. Vergados, C. O. Ao, and A. J. Mannucci – Abstract, Presentation

Wildfire and volcanic signals in the stratosphere observed by radio occultation measurements

M. Stocker, F. Ladstädter, and A. K. Steiner – Abstract, Presentation

Signs of climate variability in double tropopause global distribution from two decades of radio occultation data (remote)

A. de la Torre, P. Alexander, T. Schmidt, P. Llamedo, R. Hierro, A. K. Steiner, and F. Ladstädter – Abstract, Presentation

Analysis of UTLS dynamics using GNSS radio occultations: the connection between blocking and sudden stratospheric warming events

K. Yessimbet, A. Osso, F. Ladstädter, and A. K. Steiner – Abstract

14:00-15:50

Afternoon Session 1

Occultations in Ionosphere and Planetary Science

Chair: T. Mannucci

14:00-14:20

COSMIC-2 Capabilities for Monitoring Ionospheric Scintillation (invited)

P. Straus, C. Carrano, K. Groves, W. McNeil, S. Sokolovskiy, I. Zakherenkova, Q. Wu, J. Braun, and E. Yizengaw – Abstract, Presentation

Assessment of GRAS ionospheric measurements from Metop-A end-of-life testing campaign

M. Hoque, L. Yuan, F. S. Prol, M. Hernandez Pajares, R. Notarpietro, A. Von Engeln, and C. Marquardt – Abstract, Presentation

Radio Occultation ionospheric products from GRAS on board Metop EPS satellites: overview and validation

R. Notarpietro, C. Marquardt, S. Paolella, S. Padovan, Y. Andres, A. Von Engeln, L. Butenko, F. M. Alemany, F. Sancho, M. Hoque, and M. Hernandez Pajares – Abstract, Presentation

GNSS-RO for the D- and E-Region Electron Density (remote)

D. L. Wu, D. J. Emmons, and N. Swarnalingam – Abstract, Presentation

Use of COSMIC-2 Slant TEC to Validate IRI Estimates of F-layer and Topside Electron Density

P. Puhl-Quinn, S. M. Leidner, J. V. Eccles, M. David and K. Shurkin – Abstract, Presentation

NOAA’s First Commercial Space Weather Data Pilot

M. McHugh, P. Weir, and G. Peltzer – Abstract, Presentation

Radio Holographic Methods for the Inversion of Radio Occultation Measurements from Past and Current Venus Missions

T. Bocanegra-Bahamon, C. O. Ao, K.-N. Wang, and P. Vergados – Abstract, Presentation

16:20-17:55

Afternoon Session 2

Occultations in NWP 3 – Processing-Assimilation-Forecasting Advances

Chair: V. Nguyen

16:20-16:40

Status update of GNSS-RO data assimilation efforts at NOAA (invited)

L. Cucurull, D. Kleist, H. Liu, J. Guerra, X. Li, and B. Johnston – Abstract, Presentation

Status of GNSS-RO in global data assimilation at DWD

H. Anlauf – Abstract, Presentation

Recent developments on the assimilation of GNSS-RO bending angles in the Météo-France 4D-Var system

D. Raspaud – Abstract, Presentation

A Forecast Sensitivity to Observation Impact of traditional and commercial occultation data with Environment. Canada's forecast system

J. M. Aparicio and D. Lobon – Abstract

Impact on ECMWF forecast by assimilating Spire bending angles

K. Lonitz, S. Healy, and C. Marquardt – Abstract, Presentation

Status of near-real-time processing of GNSS radio occultations from the Sentinel-6 Michael Freilich satellite

C. Galley and C. Ao – Abstract, Presentation

09:00-10:25

Morning Session 1

Occultation Methodology 3 – Errors and Solutions

Chair: S. Syndergaard

Errors in RO observations: what causes them and how can we estimate them? (invited)

R. Anthes, J. Sjoberg, S. Syndergaard, and X. Feng – Abstract, Presentation

Generalized Three Cornered Hat applied to three independent refractivity data sets

J. K. Nielsen, H. Gleisner, K. B. Lauritsen, and S. Syndergaard – Abstract, Presentation

Residual ionospheric errors in radio occultation data and latest news on two correction techniques (remote)

J. Danzer, C. Liu, and G. Kirchengast – Abstract

ROM SAF radio occultation activities and future developments (invited)

K. B. Lauritsen – Abstract, Presentation

11:00-12:30

Morning Session 2

Radio Occultation Data for Climate Monitoring

Chair: R. Anthes

STAR GNSS RO Processing, Validation, and Monitoring System: Validation of the Spire Data Products and their Applications for Numerical Weather Prediction and Climate Studies

S.-P. Ho, X. Zhou, Y. Chen, W. Miller, and B. Zhang – Abstract, Presentation

Sentinel-6A Non-Time-Critical Radio Occultation Products by EUMETSAT

A. von Engeln, S. Paolella, S. Padovan, R. Notarpietro, Y. Andres, F. Martin Alemany, L. Butenko, C. Marquardt, and F. Sancho – Abstract, Presentation

GNSS radio occultation excess phase processing for climate applications including uncertainty estimation

J. Innerkofler, G. Kirchengast, M. Schwärz, C. Marquardt, Y. Andres, and C. Liu – Abstract, Presentation

OPAC 2022 Radio occultation processing at the Wegener Center: Validation and uncertainty evaluation of rOPS long-term data records

M. Schwärz, V Proschek, J. Innerkofler, A. Leuprecht, E. Wappis, and G. Kirchengast – Abstract, Presentation

Assessment of the Consistency and Stability of CrIS Infrared Observations Using COSMIC-2 Radio Occultation Data Over Ocean

Y. Chen, C. Cao, X. Shao, and S. Ho – Abstract, Presentation

GNSS Radio Occultation in the AWS Cloud: Background

S. Leroy, A. McVey, S. Leidner, J. Martin, H. Zhang, D. Hunt, S. Sokolovoskiy, C. Ao, K.-N. Wang, M. Oyola-Merced, H. Gleisner, S. Syndergaard, and K. Lauritsen – Abstract, Presentation

14:00-15:45

Afternoon Session 1

Occultations in NWP 4 – Understanding Errors and Validation Studies

Chair: L. Cucurull

14:00-14:15

Characterizing the radio occultation bending angle uncertainty in the lower troposphere using end-to-end simulations

K. N. Wang, C. O. Ao, S.-P. Ho, L. Cucurull – Abstract, Presentation

Assimilating Radio Occultation Profiles with Vertical Error Correlations

K. Bathmann and D. Zupanski – Abstract, Presentation

Estimates of GNSS-RO bending angle covariance information

N. Semane and S. Healy – Abstract, Presentation

Using ensemble spread as a measure of GNSS-RO impact: real and simulated data

K. Lonitz and S. Healy – Abstract, Presentation

GRACE-FO radio occultation data processing – a validation study

T. Schmidt, P. Schreiner, J. Wickert, B. A. Iijima, C. O. Ao, J. Tien, and T. Meehan – Abstract, Presentation

A Study of Quality Control and Observation Error Models for RO Data Assimilation

H. Shao, H. Zhang, L. Hayden, J. Sjoberg, B. Ruston, R. Anthes, J.-P. Weiss, and B. Kuo – Abstract, Presentation

First results from two-dimensional bending angle operator for airborne radio occultations

P. Hordyniec, J. S. Haase, B. Cao, M. J. Murphy, and S. Healy – Abstract, Presentation

16:15-17:50

Afternoon Session 2

Atmospheric Physics and Climate 2 – Dynamics and Variability

Chair: C. Marquardt

16:15-16:35

Planetary Boundary Layer Profiling from COSMIC-2, Sentinel-6, and Spire GNSS Radio Occultation (invited) 

C. O. Ao, P. Vergados, and K.-N. Wang – Abstract, Presentation

The ROHP-PAZ Polarimetric Radio Occultation research dataset and its applications

R. Padullés, E. Cardellach, S. Oliveras, C. O. Ao, F. J. Turk, K.-N. Wang, M. Oyola, M. de la Torre Juárez, J. P. Weiss, D. Hunt, and S. Sokolovskiy – Abstract, Presentation

Validation of monthly wind fields derived from GPS radio occultation data

I. Nimac, J. Danzer, and G. Kirchengast – Abstract

Madden-Julian Oscillation observed in COSMIC-2 radio occultation data

Z. Zeng – Abstract

The Relationship between Stratospheric Gravity Wave Potential Energy and Tropospheric Parameters over South America inferred from COSMIC-2 and METOP Radio Occultation Measurements

T. T. Ayorinde, C. M. Wrasse, H. Takahashi, C. A. O. B. Figueiredo, D. Barros, S. O. Lomotey, P. Essien, and A. Vestena Bilibio – Abstract

Absolute momentum fluxes in the stratosphere with GNSS radio occultation data

T. Schmidt, A. de la Torre, and P. Alexander – Abstract, Presentation

19:00-21:00

Cloud computing and RO data in the AWS Open Data Registry Side-workshop (S. Leroy)

GNSS RO has arrived in the Amazon Web Services (AWS) Open Data Registry for free download.
This workshop will introduce the world of AWS cloud computing at the level of an IROWG participant.
The only prerequisites are a laptop computer with ssh installed. Some experience in scientific programming in Python would help.
>> More info