FY-4A GIIRS Level 1 data will be available on EUMETCast Terrestrial from 24 April.
Thursday, 11 April 2019
GIIRS onboard CMA’s FY-4A satellite is the first hyperspectral infrared sounder operating from geostationary orbit. It uses a Michelson interferometer to measure radiance in the infrared spectral domain. It has a spatial resolution of 16 km at the sub-satellite point.
More information on the instrument is available on the: NSMC/CMA webpage
Current operations mode:
- Every 2 hours: Full Observation region (3N-55N, 66E-144E), comprised of 7 tasks, each task taking around 12 minutes with a gap until the end of the 15 minute cycle. One task contains 60 dwells, each in a separate file.
- 16-18 UTC: Maintenance, data unavailable
- The last 15 minutes of each 2-hour observation is used for geolocation and calibration.
The GIIRS Level 1 data, in native HDF-5 format, will be distributed on EUMETCast Terrestrial:
Multicast address: 22.214.171.124
Users wishing to receive these data via EUMETCast Terrestrial should register via our Earth Observation Portal (EOP).
For more information, contact our User Service Helpdesk.