EO:EUM:DAT:0452
Global GRAS-2 Level 1B Bending Angle Profiles (netCDF) - Metop-SGThe GRAS-2 (GNSS Receiver for Atmospheric Sounding) level 1b data consists of vertical
bending angle profiles of the atmosphere, generated for each individual occultation
event. The GRAS-2 instrument on-board Metop-SG is designed to track multiple GNSS
satellites, including Global Positioning Satellites (GPS), Galileo and BeiDou satellites.
The tracking range up to 600 km altitude supports ionospheric sounding.
Each level 1b data corresponds to a single occultation and contains the associated
bending angle profile together with the lower-level data (level 1a) from which it
was derived, including excess-phase time series, signal-to-noise ratios, and precise
orbits and clocks for both the LEO and GNSS satellite.
The level 1b data in netCDF format is provided on a high resolution fixed vertical
grid of impact parameter and also on a thinned resolution fixed vertical grid for
both neutral atmosphere and ionosphere.
The thinned version of the data is provided in BUFR format.
The main applications of RO/GRAS-2 level 1b data are for assimilation in NWP systems,
climate, and space weather.
Each level 1b data corresponds to a single occultation and contains the associated
bending angle profile together with the lower-level data (level 1a) from which it
was derived, including excess-phase time series, signal-to-noise ratios, and precise
orbits and clocks for both the LEO and GNSS satellite
The level 1b data in netCDF format is provided on a high resolution fixed vertical
grid of impact parameter and also on a thinned resolution fixed vertical grid for
both neutral atmosphere and ionosphere.
The thinned version of the data is provided in BUFR format.
The main applications of GRAS-2 L1b data are for assimilation in NWP systems, climate,
and space weather.
Satellite: Metop-SG
Instrument: GRAS-2
Temporal Extent: 2026-02-26 -
now
Orbit Type: LEO
Data Policy: NoConditions
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