New regional EARS-MERSI service to be available soon
Regional EARS-MERSI data will be available on EUMETCast from 22 April 2020.
22 January 2021
16 April 2020
The new EARS-MERSI service will provide the 1 km resolution product of the MERSI-2 (Medium Resolution Spectral Imager – 2) instruments onboard the CMA’s FY-3 satellite series, starting with FY-3D which is the first satellite of the FY-3 series carrying the MERSI-2 instrument.
MERSI-2 is a combination of the MERSI-1 (20 channels) and the VIRR (Visible and Infra-Red Radiometer) (five channels) instruments onboard FY-3A, -3B and -3C, so has 25 channels in total. It has 2048 pixels across-track and ~400 lines in a 1-minute segment.
The EARS-MERSI service will include data from the Athens, Kangerlussuaq, Lannion, Maspalomas and Svalbard stations.
The data will be processed to level-1 using the processing package (FY3_IPP) provided by CMA. As with the AVHRR and VIIRS regional services, we will provide 1-minute segments removing overlaps between stations. There are 2 files per 1-minute segment.
NOTE: For some parameters, the values may exceed the range which is specified by the valid range attribute of these parameters. This could lead to reading problems with HDF-readers that use the valid range attribute to check the validity of the data (e.g. some pytroll routines). The issue is being investigated with CMA.
The data will be distributed on EUMETCast Europe, on the High Volume Service, Transponder 1 (HVS-1):
Multicast address: 220.127.116.11
FY3D_<startDate>_<startTime>_<endTime>_<orbitNumber>_MERSI_1000M_L1B.HDF (for the scientific data)
FY3D_<startDate>_<startTime>_<endTime>_<orbitNumber>_MERSI_GEO1K_L1B.HDF (for the geolocation data)
There will be ~250 files/day for each file type.
Total volume: ~5 GB/day
Users wishing to receive the EARS-MERSI data should register via our Earth Observation Portal (EOP).
For more information, contact our User Service Helpdesk.
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