Community Satellite Processing Package

  Suomi National Polar-orbiting Partnership (NPP) Science Data Record (SDR) Software Version 1.4 Release

8 July 2013

     New SDR packages supporting the calibration and geolocation of the Visible Infrared Imaging Radiometer Suite (VIIRS), Advanced Technology Microwave Sounder (ATMS), and the Cross-track Infrared Sounder (CrIS) instruments. This version is being co-released with the CSPP VIIRS EDR Version 1.1 software package.

What is new in CSPP SDR Version 1.4:

  • The VIIRS SDR software now includes an option to run on multiple processor cores; this significantly reduces the time it takes to process VIIRS RDRs. Please note that the system requirements include 16 GB RAM (minimum), plus an additional 8GB of RAM for every core that is used for CSPP VIIRS SDR processing.
  • All SDR software has been recompiled with GCC 4.7, giving a significant reduction in processing time.
  • The CrIS SDR software now includes an automated truncation algorithm to handle full spectral resolution data, when it becomes available,
  • RDR files created by RT-STPS v5.3 can now be used as input for the VIIRS, CrIS, and ATMS software (no SSEC patch is required).
  • The Orbit Number is now included in both the SDR filenames as well as the SDR attributes.

The CSPP SDR software package is based on the Algorithm Development Library (ADL) software developed by Raytheon for the JPSS Project. ADL allows the operational processing algorithms for Suomi NPP to run without modification in a Linux environment. SSEC has packaged the ADL versions of the Suomi NPP algorithms so they can run from the Linux command line in real-time direct broadcast mode, but we have not changed the underlying processing software, algorithms, or data formats. The output files from the CSPP SDR processing software are identical in naming, format, and structure to the corresponding files from NOAA/NESDIS. The native format for NPP SDR products is HDF5, and descriptions of the NPP file formats are available here (see the Common Data Format Control Books).