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
Satellites supported
Suomi-NPP and NOAA-20, as shown on the tables on the Regional Data Service/EARS webpage.
Product processing
RT-STPS as provided by the NASA, CSPP as provided by CIMSS and AAPP as provided by NWP SAF, configured and run by EUMETSAT.
Product segmentation
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
30 minutes.
Products via RMDCN/GTS
As for EUMETCast.
Archived in EUMETSAT
None.
Further information
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
