31 May 2022
22 March 2021
The EARS-MWRI service collects data from the Micro-Wave Radiation Imager (MWRI) instrument, on board the FY-3D spacecraft, operated by CMA.
MWRI is a conical scanning microwave imager at five frequency points with dual polarizations (10 channels); see instrument characteristics in the table below. The sensor measures thermal microwave emission of land and ocean surfaces, and measures various forms of water in the atmosphere, clouds, and surfaces.
The MWRI imager can penetrate clouds, providing an all-weather measurement capability. The spatial resolutions are from 12 to 80km, depending on the wavelengths. At higher-frequency channels, such as 89GHz, the scattering signature from the cloud and precipitation are also good indicators for detecting rainfall over land and ocean.
| Central frequency (GHz) | Bandwidth (MHz) | Polarisations | NEΔT | IFOV |
|---|---|---|---|---|
| 10.65 | 180 | V, H | 0.5 K | 51 x 85km |
| 18.7 | 200 | V, H | 0.5 K | 30 x 50km |
| 23.8 | 400 | V, H | 0.5 K | 27 x45km |
| 36.5 | 400 | V, H | 0.5 K | 18 x30km |
| 89 | 3000 | V, H | 0.8 K | 9 x15km |
EARS-MWRI service specification
Satellites supported
FY-3D, as shown on the tables on the Regional Data Service/EARS webpage.
Product processing
FY3_IPP as provided by CMA and AAPP as provided by NWP SAF, configured and run by EUMETSAT.
Product segmentation
Segments each containing one minute of observations. Duplicate segments removed before dissemination.
Products via EUMETCast Europe
MWRI, all 10 channels, calibrated and geolocated.
Native HDF5 and BUFR format.
Timeliness via EUMETCast
30 minutes.
Products via RMDCN/GTS
None
Archived in EUMETSAT
None.
Further information
For more information on EARS-MWRI see TD 14 - EUMETSAT Advanced Retransmission Service Technical Description
Full details on products can be found in the Product Navigator: MWRI - Feng-Yun - 3 - Regional Data Service
