Providing operational IR sounder data with high timeliness
The EARS-CrIS service collects data from the CrIS instrument onboard the JPSS spacecrafts, operated by NASA and NOAA.
30 March 2022
28 April 2020
The Cross-track Infrared Sounder (CrIS), provides soundings of the atmosphere with 2211 spectral channels, over three wavelength ranges: LWIR (9.14–15.38µm), MWIR (5.71-8.26µm) and SWIR (3.92–4.64µm). The CrIS instrument, a Fourier transform spectrometer, scans a 2200km swath width (+/- 50 degrees), with 30 Earth-scene views. Each field consists of nine fields of view, arrayed as 3x3 array of 14km diameter spots (nadir spatial resolution). Check the JPSS pages on the NOAA website for more details
In the CrIS EARS-service only a selection of 431 channels is disseminated.
The provision of CrIS data in the form of an EARS-service is a logical extension of the EARS-IASI service, providing operational IR sounder data with high timeliness for the assimilation in numerical atmospheric models from regional to global scale.
EARS-CrIS service specification
Suomi-NPP and NOAA-20, as shown on the tables on the Regional Data Service/EARS webpage.
RT-STPS as provided by the NASA, CSPP as provided by CIMSS and AAPP as provided by NWP SAF, configured and run by EUMETSAT.
One file per station per pass.
Products via EUMETCast Europe
SDR, CrIS spectral channels as selected by NOAA, all Fields of View, calibrated and geolocated. BUFR format.
Timeliness via EUMETCast
Products via RMDCN/GTS
As for EUMETCast.
Archived in EUMETSAT
For more information on EARS-CrIS see TD 14 - EUMETSAT Advanced Retransmission Service Technical Description
Full details on products can be found in the Product Navigator:
CrIS Regional Data Service
Other EARS services
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 collects data from the ATMS instrument on board the JPSS spacecrafts, operated by NASA and NOAA.
EARS-ATOVS provides the European meteorological community with sounder data covering data-sparse areas, within 30 minutes of the instrument observations.
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 complements the Metop and the US POES and SNPP/JPSS satellites currently covered by EARS.
EARS-VASS (Vertical Atmospheric Sounding Service), complements the Metop and the US POES and SNPP/JPSS satellites currently covered by EARS.