This GNSS-RO precipitation webinar is an encore presentation from the American Meteorological Society Annual Meeting. The recorded webinar is now available on demand and explains how GNSS radio occultation can detect and characterize precipitation from space.
The GNSS-RO precipitation webinar highlights PlanetiQ’s calibration and retrieval techniques for isolating and geolocating precipitation-induced signatures. Researchers discuss how differential phase measurements identify precipitation structure and improve understanding of atmospheric processes.
The presentation examines measurements collected from the PAZ mission and compares them with collocated datasets such as IMERG and ERA5 snowfall analyses. The results show strong correlation between the GNSS-RO observations and existing precipitation measurements.
The webinar also explains how signal-to-noise ratio (SNR) affects precipitation detection performance. Higher-SNR measurements improve sensitivity to lighter precipitation and some cloud structures. Researchers also compare measurement performance over land and ocean environments.
Additional discussion focuses on how these observations remain largely insensitive to surface conditions and emissivity variations. This capability allows GNSS-RO systems to provide more consistent global precipitation observations.
Attendees will also learn how polarized GNSS radio occultation supports the detection of:
- Rain and snowfall structure
- Melting layers
- Horizontal precipitation bands
- Storm intensity variations
The webinar demonstrates how GNSS-RO technology can expand weather monitoring capabilities and support future forecasting systems.
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