EARS-MERSI

Providing high resolution cloud data

EARS-MERSI complements the Metop and the US POES and SNPP/JPSS satellites currently covered by EARS.

Last Updated

31 May 2022

Published on

27 April 2020

The EARS Medium Resolution Spectral Imager (MERSI) service collects data from the MERSI-II instrument on board FY-3D. MERSI-II is a 25-channel VIS/IR multispectral radiometer (replacing and merging MERSI-1 on FY-3A/3B and VIRR on FY-3A/3B/3C).

Six of the channels have a 250m resolution and the remaining 19 channels have a resolution of 1km. Scanning technique: Cross-track: 2048 detectors for channels at 1000m resolution, or 8192 detectors for channels at 250m resolution, swath 2900km; Along-track: ten 10km lines every 1.5 secs.

EARS-MERSI 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 the CMA, configured and run by EUMETSAT.

Product segmentation

Segments each containing one minute of observations. Duplicate segments removed before dissemination.

Products via EUMETCast Europe

Two separate products:

One product containing science and calibration data, 1km resolution, in HDF format.
One product containing geolocation data, in HDF format.

Timeliness via EUMETCast

30 minutes.

Products via RMDCN/GTS

None

Archived in EUMETSAT

None.

Further information

For more information on EARS-MERSI see TD 14 - EUMETSAT Advanced Retransmission Service Technical Description

Full details on products can be found in the Product Navigator: MERSI - Feng-Yun - 3 - Regional Data Service

Other EARS services

EARS-ASCAT

EARS-ASCAT collects ASCAT instrument data from Metop passes, via a network of HRPT stations, and re-transmits Level 2 products via EUMETCast.

EARS-ATMS

EARS-ATMS collects data from the ATMS instrument on board the JPSS spacecrafts, operated by NASA and NOAA.

EARS-ATOVS

EARS-ATOVS provides the European meteorological community with sounder data covering data-sparse areas, within 30 minutes of the instrument observations.

EARS-AVHRR

EARS-AVHRR collects data from Metop and NOAA via a network of AHRPT/HRPT stations.

EARS-CrIS

The EARS-CrIS service collects data from the CrIS instrument onboard the JPSS spacecrafts, operated by NASA and NOAA.

EARS-IASI

EARS-IASI collects IASI instrument data from Metop satellite-passes via a network of HRPT stations and re-transmits Level 1c and pilot Level 2 products.

EARS-MERSI

EARS-MERSI complements the Metop and the US POES and SNPP/JPSS satellites currently covered by EARS.

EARS-MWRI

EARS-MWRI complements the Metop, POES and SNPP/JPSS satellites currently covered by EARS.

EARS-NWC

EARS-NWC provides near-real time availability of high resolution cloud products.

EARS-VASS

EARS-VASS (Vertical Atmospheric Sounding Service), complements the Metop and the US POES and SNPP/JPSS satellites currently covered by EARS.

EARS-VIIRS

The EARS-VIIRS service collects data from the VIIRS instrument onboard the JPSS spacecrafts.