FY-4B GIIRS L1 data available soon

China Meteorological Administration's (CMA) FY-4B GIIRS Level 1 data will be available on EUMETCast Terrestrial from 1 February 2023.

Last Updated

27 January 2023

Published on

27 January 2023

GIIRS (Geostationary Interferometric Infrared Sounder) on board CMA’s FY-4B geostationary satellite, positioned at 133° East, is a MWIR/TIR interferometer with two bands at LWIR: 680～1130cm^-1, MWIR: 1650～2250cm^-1, at a spectral resolution of 0.8cm^-1 and a spatial resolution of 12km. In addition it contains a VIS imager for cloud detection with a spatial resolution of 1km.

The FY-4B GIIRS Level 1 data, in HDF-5 format, will be distributed on EUMETCast Terrestrial, channel T01-TPG-5 (multicast address: 232.223.222.33).

The data will complement the existing FY-4A GIIRS data which have slightly different characteristics.

Example filename:

Z_SATE_C_BAWX_20230114101559_P_FY4B-_GIIRS-_N_REGC_1330E_L1-_IRD-_MULT_NUL_20230114100937_20230114101445_012KM_020V1.HDF

Users already subscribed to FY-4 data via EUMETCast Terrestrial will receive these FY-4B data automatically. Other users wishing to receive these data should register via the Earth Observation Portal (EOP).

For more information, contact our User Service Helpdesk.