Community Satellite Processing Package

  CSPP Hyper-Spectral Enterprise Algorithm Package (HEAP) Software Version 2.0 Release

11 January 2022

New release of the NOAA Hyper-Spectral Enterprise Algorithm Package (HEAP) software for retrieving atmospheric profiles of temperature, moisture, trace gases and cloud-cleared radiances from direct broadcast (DB) CrIS+ATMS Sensor Data Records (SDRs) for S-NPP and NOAA-20 and IASI+AMSUA/MHS Level1-b files for Metop-A, B, and C. Please note that S-NPP CrIS has experienced a number of hardware events that have affected its operational capabilities. This software should not be executed on S-NPP CrIS data following the Side 2 electronics failure of 22-May-2021. Also note that Metop-A instruments were switched off on 15-Nov-2021.

HEAP runs the NUCAPS (NOAA Unique Combined Atmospheric Processing System) algorithm. This CSPP release provides NOAA HEAP version 3.1, adapted and tested for operation in a real-time direct broadcast environment. The software contains binary executable files and supporting static data files, as well as an optional test data package of input and output files for verification of a successful installation. It is created in support of Direct Broadcast users, and is sponsored by the Community Satellite Processing Package (CSPP) project funded by the NOAA/NASA Joint Polar Satellite System (JPSS).

HEAP development is led by Tom King, with oversight by Ken Pryor, at the NOAA NESDIS Center for Satellite Applications and Research (STAR). This CSPP release was created in close collaboration with Chris Barnet (the NOAA government science lead for NUCAPS from 2003 to 2013) and his staff of developers of the NUCAPS science code, Murty Divakarla and Nadia Smith, who are the scientists most familiar with the algorithmic and scientific underpinnings.

What's New in CSPP HEAP Version 2.0

  • Algorithm update to NOAA HEAP Version 3.1,
  • SO2 retrievals for Metop Satellites,
  • Software is now packaged within a Singularity container,
  • HEAP no longer supports the Suomi-NPP mission after the Side 2 electronics failure that took place 22-May-2021.
System requirements for the CSPP HEAP v2.0 software are as follows:
  • Singularity version 3.7.3 or above ( ) soon to become Apptainer,
  • Intel or AMD CPU with 64-bit instruction support, with 2GB RAM,
  • CentOS-7 or -8 64-bit Linux (or other compatible 64-bit Linux distribution),
  • 6 GB of disk space (plus space for your own DB data and CSPP NUCAPS products).
There are several output product files, including NUCAPS NetCDF files containing:
  • Cloud-cleared Radiances (NUCAPS-CCR-AR_v3r0_*.nc files),
  • Outgoing Longwave Radiation (NUCAPS-OLR_v3r0_*.nc files),
  • and Environmental Data Record (EDR) vertical profiles of temperature, moisture and trace gasses (NUCAPS-EDR_v3r0_*.nc files) including:
    • Atmospheric temperature [K] at 100 pressure levels
    • Atmospheric moisture [g/g] at 100 pressure levels
    • Atmospheric ozone [ppb] at 100 pressure levels
    • Atmospheric liquid water [g/g] at 100 pressure levels
    • Carbon dioxide dry mixing ratio [ppm] at 100 pressure levels
    • Trace gas mixing ratios CO, CH4, HNO3, N2O, SO2* [ppb] at 100 pressure levels
    • Surface skin temperature [K]
    • Microwave surface emissivity
    • Column averaged CO2 per ATMS or AMSU Field-Of-View (FOV) [ppm]
    • Cloud top pressure for up to two cloud layers [hPa]
    • Cloud top fractional coverage for up to two cloud layers
    • 10 Stability parameters including CAPE, Lifted Index (LI) and Convective Inhibition (CIN)
    • Quality flags
Documents containing complete descriptions of the algorithm, inputs and outputs are included as part of the CSPP HEAP Version 2.0 software package.