Community Satellite Processing Package

  CSPP Hyper-Spectral Enterprise Algorithm Package (HEAP) Software Version 1.0.2 Release

18 November 2020

Minor 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.

HEAP runs the NUCAPS (NOAA Unique Combined Atmospheric Processing System) algorithm. This software is an update and combination of the previously released CSPP NUCAPS and NUCAPS-IASI packages. 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 Walter Wolf and Lihang Zhou 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.

This CSPP release provides HEAP version 2.1, 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 input and output files for verification of a successful installation.

What's New in CSPP HEAP Version 1.0.2

This minor update includes the following changes:
  • Improved execution speeds through optimized recompilation. The retrieval step execution time is halved.
  • Added support for Suomi-NPP and NOAA-20 SO2 retrievals. Previous version stored SO2 climatology.
System requirements for the CSPP HEAP v1.0.2 software are as follows:
  • Intel or AMD CPU with 64-bit instruction support,
  • 2 GB RAM,
  • CentOS-6, -7 or -8 64-bit Linux (or other compatible 64-bit Linux distribution),
  • Perl v5.010 ; for CentOS-7 make sure perl-core is also installed,
  • Command-line utilities timeout, which and uuidgen,
  • lftp utility for fetching ancillary data (unless running in quarantine mode),
  • 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_v2r0_*.nc files),
  • Outgoing Longwave Radiation (NUCAPS-OLR_v2r0_*.nc files),
  • and Environmental Data Record (EDR) vertical profiles of temperature, moisture and trace gasses (NUCAPS-EDR_v2r0_*.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
      • [*Metop-A, B, and C return climatological values for SO2]
    • Surface skin temperature [K]
    • Microwave surface emissivity
    • Column averaged CO2 per 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
Manuscripts containing complete descriptions of the algorithm, inputs and outputs are included as part of the HEAP software package.