National Oceanic and Atmospheric Administration, United States Department of Commerce


Data Description

    JPSS CrIS SDR Reprocessed (RPCRISSDR) - The Cross-track Infrared Sounder (CrIS) instrument provides atmospheric temperature and moisture observations for weather and climate applications. The CrIS sensor has three spectral bands: the long-wave infrared (LWIR) band (650-1095 cm-1), the mid-wave infrared (MWIR) band (1210-1750 cm-1), and the short-wave infrared (SWIR) band (2155-2550 cm-1). For each band, CrIS measures the infrared (IR) spectra from the Earth scene (ES) with a 3×3 detector array, corresponding to 9 field-of-views (FOVs) with a 14-km diameter at nadir or one field-of-regard (FOR). This data family includes reprocessed version 2 (RP2) calibrated radiance data (SCRIF or SCRIS) and geolocation (GCRSO) data. These Sensor Data Records (SDR) were generated by the Center for Satellite Applications and Research (STAR) using the latest CrIS calibration coefficients and algorithms. The reprocessed SDRs are suitable for long-term climate monitoring, model assessment, and to evaluate the calibration accuracy of other instruments. Reprocessed CrIS SDR data obtained from the NOAA Comprehensive Large Array-Data Stewardship System (CLASS) are distributed as aggregated 8 minute files consisting of 15 granules in the Hierarchical Data Format v.5 (HDF5) with metadata attributes included. See the 'Details - Metadata, Documentation' section below for additional information. Collection landing pages for the products included in this family can be accessed via the "Product Details" link.

Details - Metadata, Documentation


    03/11/2022 - The Reprocessed CRIS data is now available to the public starting on 03/11/2022.

    03/11/2022 - To access the more recent data please go to the CRIS_SDR products search page. The operational data (post 1/29/2020) uses the latest version of the reprocessing algorithm.

    08/31/2021 - For a detailed description of the CrIS reprocessing, users are directed to the following papers:

    1. Zou et al., 2020. "The Reprocessed Suomi NPP Satellite Observations". Remote Sens. 2020, 12, 2891,,
    2. Y. Chen, F. Iturbide-Sanchez, et al., 2021. "Reprocessing of Suomi NPP CrIS Sensor Data Records to Improve the Radiometric and Spectral Long-Term Accuracy and Stability," IEEE Transactions on Geoscience and Remote Sensing, doi: 10.1109/TGRS.2021.3060639,
    3. Iturbide-Sanchez et al., 2021. "Toward High-quality and long-term stability S-NPP and NOAA-20 Cross-track Infrared Sounder Sensor Data Record Products", IEEE Geoscience and Remote Sensing Society 2021.



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Sensor Data Record
CrIS Full Spectral Science SDR (SCRIF)
CrIS Science SDR (SCRIS)
CrIS SDR Ellipsoid Geolocation (GCRSO)



Dataset Series
Reprocessed Version 2 (2012-02-20 - 2020-01-29)

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