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JCSDA Announces Sixth Public Release of Skylab

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The JCSDA is pleased to announce the release of Skylab 6.0!

JCSDA SkyLab 6.0 is the sixth roll-up release that provides integrated Earth System Data Assimilation capability. All JEDI code is open source, distributed under the Apache 2 licensing agreement and publicly available at https://github.com/JCSDA. Capabilities are demonstrated via the SkyLab testbed experiments conducted internally at JCSDA for the following components: atmosphere, land/snow, ocean, sea-ice, aerosols, and atmospheric composition. SkyLab testbed output plots are openly available through the SkyLab Data Viewer at https://skylab.jcsda.org.    

The main SkyLab upgrades for release 6.0 include:

  • Atmosphere-land experiment:

    • CRTM v3.0 bug fixes and minor updates compared to the skylab-v5 release.  

      • Updated the coefficients for IR Water emissivity (consistent with v2.4.1)

      • Bugfixes resolving NaNs and underflows 

    • Addition of GMI, AMSR/2, SnowDepth (GHCN), and active all-sky assimilation for GOES water vapor channels.

  • Marine experiment:

    • Quality control filters for in-situ temperature and salinity observations are added (checking: regional value range, profile spikes and gradients, and profile density inversions), these filters should be suitable for ingesting realtime in-situ observations that did not have existing quality control flags.

  • Trace gas experiment:

    • 3D-FGAT assimilation for CO and NO2 with FV3 stretch cubed sphere grid, providing down to 7 km resolution over CONUS. Observations include the new TEMPO proxy NO2 tropospheric columns

  • Software infrastructure 

  • Tested for the following system requirements:

    • Amazon Web Services (AWS) Single Node AMI (RedHat 8; gnu)

    • Amazon Web Services (AWS) Parallel Cluster (Ubuntu 20.04; intel)

    • NASA Discover (gnu & intel)

    • NOAA Mississippi State University Orion (gnu & intel)

    • NOAA University of Wisconsin S4 (intel)

    • NCAR Cheyenne (gnu)

    • Limited support for NOAA ParallelWorks AWS, Azure, Gcloud (intel)

SkyLab has been developed by the JCSDA with contributions from its Partner Agencies in NOAA, NASA, the US Air Force, and the US Navy.

To read more about the release, links to the code, release notes and tutorials, visit www.jcsda.org/jediskylab 

Photo by Martin Jaroš on Unsplash